JP5294456B2 - Vibration detector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration detection device determining the type of action causing external force when the external force is applied. <P>SOLUTION: The vibration detection device 1 consists of: a detection part 20 converting the variation of the pressure applied to an object into a voltage and outputting it; and a measurement part 30 measuring the voltage output from the detection part 20. The measurement part 30 is provided with: a filter means 34 separately passing the voltage of a plurality of frequency bands (for example, two types of digital band pass filters). By outputting the voltage of the plurality of frequency bands passing through the filter means 34 as separate signals, the type of the external force is determined. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a vibration detection apparatus.

  2. Description of the Related Art Conventionally, a sensor that converts a pressure applied to an object into an electrical signal and outputs the signal is known. For example, in Patent Document 1, as a vibration detection device used in a security device for windows, a pressure applied by a piezoelectric element is converted into a voltage, the voltage is amplified by an amplifier circuit, and a noise component is attenuated by a filter circuit. There is something to make.

  According to such a vibration detection device, a change in external force can be detected as a simple change in voltage value. For example, when mounted on a glass plate, miscellaneous vibration noise is attenuated, resulting in malfunction due to miscellaneous vibration. Can be detected as abnormal when the vibration due to opening / closing, breaking, striking, etc. of the glass plate is above a threshold.

Japanese Patent No. 2620211 (paragraphs 0008 to 0011)

  However, since the magnitude of the voltage of the piezoelectric element is proportional to only the “magnitude” of vibration and has nothing to do with its type (impact, strain, etc.), simply converting external force into voltage as described above Although it was possible to detect that an external force exceeding a certain level was applied to the object to which the vibration detection device was attached, it was not possible to distinguish what event the external force was caused by.

  Therefore, if the threshold value is set based on the magnitude of relatively small vibration caused by opening and closing the window, there is a possibility that even a small impact generated when the glass is tapped is detected as abnormal. Further, if the threshold is set based on the magnitude of relatively large vibration due to window breakage or the like, there is a possibility that small vibration such as opening / closing of the window cannot be detected as abnormal.

  The present invention proposes a vibration detection apparatus that can determine what kind of action the external force is when an external force is applied.

In order to solve the above problems, a vibration detection apparatus according to the present invention includes a detection unit that converts a change in pressure applied to an object into a voltage and outputs the voltage, and a measurement unit that measures a voltage output from the detection unit. The measurement unit includes, from the voltage output from the detection unit, at least a voltage in a first frequency band corresponding to a pressure gradually applied to the object, and a pressure rapidly applied to the object. Filter means for separately passing a voltage of the second frequency band corresponding to the above, a voltage of the first frequency band and a voltage of the second frequency band, and an upper limit value set for each frequency band Comparing means for comparing with a certain high threshold value, and output means for outputting an abnormality detection signal when the voltage is equal to or higher than the high threshold value , wherein the comparing means has the voltage in the first frequency band as the first frequency band. For one frequency band Triggered by exceeding the high threshold is the upper limit value of, and comparing with the first low threshold less than the high threshold voltage of the frequency band corresponding to said first frequency band.
Further, the detection unit may be constituted by the unimorph device or bimorph piezoelectric element.

  When an external force is applied to the detection unit such as a piezoelectric element, the frequency characteristic of the generated voltage varies depending on the type of external force (how it is applied) and the vibration of the detection unit varies. For example, when external force is applied rapidly as in the case of striking, a relatively high voltage in the second frequency band is generated, and when external force is gradually applied to gradually distort the first force, the first voltage is relatively low. A voltage in the frequency band is generated.

  Therefore, the type of external force can be determined by extracting the voltage generated from the piezoelectric element for each frequency band corresponding to the type of external force using filter means in the measurement unit. For example, if a high frequency voltage is measured, it can be determined that an impact has been applied, and if a low frequency voltage is measured, it can be determined that an external force such as distortion has been applied. Thus, if different voltage thresholds are provided for each frequency band, the type of external force can be detected. This is because, even if the type of external force can be detected by the frequency band, an extra external force consisting of the same frequency band as the external force to be detected (such as a weak impact caused by collision) This is because the appropriate threshold for comparing the magnitude of the external force, in other words, the voltage caused by the external force, differs depending on the type of external force. That is, a threshold is provided for each frequency band (for each type of external force) in order to remove an extraneous external force other than the target external force to be detected. For example, a standard threshold value of a rapidly applied external force such as a hit is lower than a standard threshold value of a gradually applied external force such as a driver inserted.

  Furthermore, the comparison means generates the voltage in the first frequency band when the voltage in the first frequency band exceeds a standard threshold value corresponding to the first frequency band (high threshold value in the embodiment). By comparing with a threshold value lower than the standard threshold value corresponding to the first frequency band (low threshold value in the embodiment), the range of the magnitude of the external force gradually applied such as detectable distortion is expanded. That is, an external force such as a relatively small distortion can be detected using a relatively large external force such as a distortion (for example, intentional driver insertion) as a trigger.

  An external force is converted into a voltage by the detection unit, and the voltage is output as a signal for each of a plurality of frequency bands by the measurement unit. Therefore, an external force corresponding to each frequency band (for example, an external force that is applied rapidly or an external force that is applied gradually) It can be recognized how much is added. Further, when the voltage in the first frequency band having a low frequency exceeds the standard threshold value corresponding to the first frequency band, the threshold value is lowered, and thus the object is deformed while being attenuated in the medium to long term due to distortion or the like. Even if it is, it can be recognized that an external force is applied.

The best mode for carrying out the present invention will be described below with reference to the drawings. For the sake of convenience, unless otherwise noted, parts having the same operational effects are denoted by the same reference numerals and description thereof is omitted.
FIG. 1A is a plan view of the detection unit 20 in the vibration detection apparatus 1, and FIG. The piezoelectric element 10 used in the vibration detection device 1 is a unimorph piezoelectric element, and has a structure in which electrodes 10b and 10c are formed on both surfaces of a piezoelectric ceramic 10a such as barium titanate, lead titanate, or lead zirconate titanate. In this embodiment, the piezoelectric ceramic 10a has a disk shape with a diameter of about 9 mm and a thickness of about 0.1 mm, and the electrodes 10b and 10c have a circular shape with a diameter of about 8 mm. One surface (the electrode 10c side) of the piezoelectric element 10 is bonded to a metal plate 12 such as brass or stainless steel, thereby forming a detection unit 20 that detects vibration. In this embodiment, the metal plate 12 has a circular shape with a diameter of about 12 mm and a thickness of about 0.1 mm.

  The detection unit 20 is configured such that when the metal plate 12 is bent in the direction shown in FIG. 2A and the piezoelectric element 10 is extended in the radial direction, the metal plate 12 is bent in the direction shown in FIG. Since the direction in which the voltage generated is reversed when the metal plate 12 contracts, the metal plate 12 is deformed in the state of FIG. 2A and in the state of FIG. When is alternately repeated, a voltage having a frequency corresponding to the vibration is generated. Therefore, by measuring the voltage generated in the detection unit 20, it can be determined how the detection unit 20 is deformed or vibrated. Deformation or vibration is generated by some external force. Therefore, determining the deformation or the like can be understood as determining what external force is applied to the detection unit 20. Therefore, for example, when an external force is gradually applied to the metal plate 12, a low frequency voltage is generated, and when an external force is applied rapidly, a high frequency voltage is generated (see FIGS. 5 and 6). Here, when an external force that is gradually applied and an external force that is applied rapidly are generated simultaneously, a voltage obtained by combining a low-frequency voltage and a high-frequency voltage is measured.

  The detection unit 20 has a metal plate 12 side bonded to a circuit board 14 such as a glass epoxy board (see FIG. 4). The circuit board 14 includes a filter circuit 22 for cutting a noise component from a voltage generated in the detection unit 20, an amplifier circuit 24 for amplifying a voltage signal that has passed through the filter circuit 22, and a voltage amplified by the amplifier circuit 24. A measurement unit 30 and a measurement unit that detect normality and abnormality by measuring presence or absence of deformation of a predetermined size for each frequency band while measuring voltage values for a plurality of preset frequency bands from the voltage value of the signal An output connector 28 for outputting a signal indicating the detection result from 30 is provided (see FIG. 3). As described above, the detection unit 20, the filter circuit 22, the amplification circuit 24, and the measurement unit 30 are integrally provided on the same circuit board 14, so that noise due to wiring or the like is reduced and high-precision sensing can be performed. Moreover, it becomes a compact vibration detection apparatus, and unitization becomes easy. Further, when the detection unit 20 is mounted on the circuit board 14, when the vibration detection device 1 is mounted on the sensing object, the detection unit 20 is caused by natural vibration of the target rather than directly mounting the detection unit 20 on the target. It becomes difficult to be affected.

  Lead wires (not shown) are respectively attached to the electrode 10b and the metal plate 12 on the surface side of the detection unit 20, and the lead wires are connected to be input to the filter circuit 22. For the bonding of the detection unit 20, it is possible to prevent vibrations from being absorbed by the adhesive by using a material having a high hardness after bonding, such as an epoxy-based adhesive. Further, when the detection unit 20, the filter circuit 22, the amplification circuit 24, and the measurement unit 30 are mounted on the circuit board 14, other circuits or the like (the filter circuit 22, the amplification circuit 24, and the measurement are within 2 mm around the detection unit 20). Part 30) is preferably not arranged. This is for suppressing the occurrence of unnecessary noise by arranging other circuits and the like.

  The filter circuit 22 cuts frequency components (noise) that are not necessary for measurement, and filters only frequency components necessary for measurement. In the present embodiment, a high-pass filter and a low-pass filter are used, and thereby components unnecessary for measurement are cut from the voltage generated by the detection unit 20. Note that the filter circuit 22 is configured by, for example, a capacitor and a resistor.

  The voltage amplification factor of the amplifying circuit 24 can be changed as appropriate. When the voltage generated at the detection unit is high depending on the attachment target or the attachment position, the voltage amplification factor is not so large, for example, about 3 to 5 times. In the case where the voltage generated in (1) is low, the voltage amplification factor can be increased to about 20 times, for example. The amplifier circuit 24 is configured using, for example, an operational amplifier and a resistor.

The measurement unit 30 measures voltage values in a plurality of types of frequency bands from the input voltage, and determines whether or not each measurement value exceeds a threshold corresponding to each frequency.
The measuring unit 30 converts an input analog voltage signal into a digital voltage signal, and converts a voltage signal in a frequency band to be measured from the voltage signal converted by the A / D conversion unit 32. Filter means 34 that is filtered and configured by a digital filter, and comparison means 36 that compares the voltage value of the voltage signal filtered by the filter means 34 with a threshold value and outputs a comparison result.

  The measurement unit 30 also includes, for example, a ROM 30a that stores programs for realizing the functions of the filter unit 34 and the comparison unit 36, a CPU 30b that executes arithmetic processing based on the programs stored in the ROM 30a, and a data work in the arithmetic processing of the CPU 30b. It is configured by a one-chip microcomputer or the like provided with a RAM 30c that functions as an area. As will be described later, the ROM 30a stores a first detection processing program P1 for executing the first detection processing and a second detection processing program P2 for executing the second detection processing. In addition, as will be described later, the RAM 30c includes a first threshold value change flag storage area for storing a first threshold value change flag and a second threshold value change flag storage area for storing a second threshold value change flag.

  For example, when measuring two types of frequency bands, the first digital filter 34a filters the voltage signal of the first frequency band based on the voltage signal input to the measurement unit 30 and A / D converted. The voltage value is measured, and the second digital filter 34b filters the voltage signal in the second frequency band and measures the voltage value. The first comparing means 36a monitors the voltage value related to the voltage signal in the first frequency band filtered by the first digital filter 34a, and corresponds to the first frequency band and is set in advance. Compare with 1 threshold. On the other hand, while the second comparison unit 36b monitors the voltage value related to the voltage signal of the second frequency band filtered by the second digital filter 34b, the second comparison unit 36b corresponds to the second frequency band and is set in advance. Compare with the threshold of 2. Here, as a result of comparison between the voltage value and the threshold value by each comparison means 36a, 36b, the fact that the voltage value exceeds the threshold value means that each comparison means 36a, 36b has deformation (amplitude) deformation (vibration) corresponding to the threshold value. ) Is detected.

Then, a signal is output according to the comparison result. For example, when the measured voltage value exceeds a threshold value, an abnormality detection signal is output indicating that fact, that is, indicating that a deformation (predetermined deformation) exceeding the threshold value has been detected. That is, by outputting this abnormality detection signal, the output destination is notified that the deformation has occurred so that the voltage value exceeds the threshold value.
On the other hand, when the measured voltage value does not exceed the threshold value, a signal indicating that fact, that is, a normal detection signal indicating that there has been no deformation exceeding the threshold value is output. For this reason, when fraud such as disconnection of the output line from the vibration detection device 1 is performed, the disconnection or the like can be detected by the fact that no signal can be received at the output destination of the vibration detection device 1. . In addition, it is good also as a structure which always outputs a fixed pulse signal irrespective of the comparison result with a threshold value.

  FIG. 5 and FIG. 6 each show the time change of the voltage generated in the detection unit 20 when an external force is applied to the vibration detection device 1. FIG. 5 shows a case where an external force is gradually applied so as to be gradually distorted (distortion), and FIG. 6 shows a case where an external force is applied rapidly (striking) like a blow. Here, in the case of distortion, a voltage signal is generated characteristically in a voltage signal in a frequency band of 0.1 Hz to 10 Hz, which is a relatively low frequency, particularly 1 Hz to 5 Hz. Further, in the case of hitting, a voltage signal is generated characteristically in a voltage signal in a frequency band of 10 Hz to 40 Hz, which is a relatively high frequency, particularly 20 Hz to 40 Hz.

  Therefore, for example, when measuring distortion and tapping, the first frequency band filtered by the first digital filter 34a is 0.1 Hz to 10 Hz, and the second frequency filtered by the second digital filter 34b. The band can be set to 10 Hz to 40 Hz. When it is desired to discriminate between distortion and beating with higher accuracy, the first frequency band filtered by the first digital filter 34a is set to 1 Hz to 5 Hz, and the second frequency filtered by the second digital filter 34b. The band may be set to 20 Hz to 40 Hz.

  Here, distortion or beating occurred, that is, distortion or beating occurred between a voltage signal in the first frequency band having a relatively low frequency and a voltage signal in the second frequency band having a relatively high frequency. If the reference voltage value for determining the difference is different, by setting a threshold value for each frequency band, it is possible to detect vibration factors divided according to the frequency band such as distortion and beating. That is, the generation of a plurality of external forces can be simultaneously detected by one vibration detection device 1.

  In the present embodiment, the first comparison unit 36a and the second comparison unit 36b change the threshold value for comparing voltage values when a predetermined condition is satisfied. That is, the threshold values (first threshold value and second threshold value) are a standard high threshold value (first high threshold value and second high threshold value) used in normal times, and a high threshold value by each of the comparison units 36a and 36b. As a result of the comparison, a low threshold value (first low threshold value and second low threshold value) is used for a predetermined period on the condition that the measured voltage value is determined to have exceeded the high threshold value.

  Here, the low threshold is set lower than the high threshold. This is because, for example, when an external force is applied to the object, the amount of deformation (amplitude) becomes smaller with time after the external force is removed (vibration), and the measured voltage is reduced. This is because the absolute value of the value also decreases as time passes, so even if the first deformation can be detected, the second and subsequent deformations may not be detected. By changing from the high threshold value to the low threshold value and lowering the threshold value, the second and subsequent deformations can be followed to accurately detect and notify abnormality due to the deformation.

  In addition, if the purpose of detecting a predetermined deformation of the sensing target at the output destination is notification of fraudulent activity, the fraudulent will avoid reporting fraudulent activity once the fraudulent activity has been reported. In order to weaken the degree of that fraud. Specifically, for example, if the cheating is a beating, the degree of tapping (external force applied to the object) is weakened once notified. Therefore, once it is determined that a desired deformation corresponding to the hit has occurred, a secondary fraud can also be notified by lowering the threshold. In the present embodiment, the comparison means 36a and 36b are targeted for secondary fraud, but may be set so as to be able to follow tertiary and quaternary fraud.

  Next, a processing procedure by the measurement unit 30 will be described. First, the digital voltage signal converted by the A / D converter 32 is stored in a predetermined area of the RAM 30c at a predetermined time interval set in advance, that is, the voltage value of the voltage signal is stored in association with the time. Based on this data, a first detection process for determining the presence or absence of a predetermined deformation corresponding to the voltage signal in the first frequency band and the presence or absence of a predetermined deformation corresponding to the voltage signal in the second frequency band are determined. The second detection determination process is executed.

(First detection process)
First, the CPU 30b of the measuring unit 30 reads the first detection processing program P1 from the ROM 30a and performs the first detection processing shown in FIG.

(Step S101)
First, by performing a predetermined analysis based on the data stored in the RAM 30c, only the voltage signal of the first frequency band is filtered from the voltage signal synthesized in a plurality of frequency bands, and the voltage value of the voltage signal Are stored in a predetermined storage area such as the RAM 30c in association with the time.

(Step S102)
Next, it is determined whether or not the first threshold value change flag is ON. As will be described later, the first threshold value change flag is set on condition that the voltage value related to the voltage signal in the first frequency band (hereinafter referred to as the first voltage value) exceeds the first high threshold value. Are stored in the threshold value change flag storage area.

(Step S103) (Step S110)
When it is determined in step S102 that the first threshold value change flag is not turned on, it is determined whether or not the first voltage value exceeds the first high threshold value (step S103).
Here, when it is determined that the first high threshold value is not exceeded, the first normal detection signal is output (step S110), and the process ends.

(Step S104) (Step S105) (Step S106)
If it is determined in step S103 that the first high threshold value has been exceeded, the first threshold value change flag is turned on (stored in the first threshold value change flag storage area) (step S104). Subsequently, for example, the timer function is activated, and measurement of a period during which the first threshold value change flag is turned on (flag on period in the figure) is started (step S105). Subsequently, the first abnormality detection signal is output (step S106).

(Step S107) (Step S108)
If it is determined in step S102 that the first threshold value change flag is ON, it is determined whether or not the flag ON time has expired (step S107).
If it is determined that the flag ON time has expired, the first threshold value change flag is turned OFF (step S108), and the process proceeds to step S109.
If it is determined that the flag ON time has not expired, the process proceeds directly to step S109.

(Step S109)
Here, it is determined whether or not the first voltage value exceeds the first low threshold value.
If it is determined that the first low threshold is not exceeded, the first normal detection signal is output (step S110), and the process is terminated.
If it is determined that the first low threshold value is exceeded, the first abnormality detection signal is output (step S106), and the process ends.

(Second detection process)
Next, the CPU 30b of the measuring unit 30 reads the second detection processing program P2 from the ROM 30a and performs the second detection processing shown in FIG.

(Step S201)
First, by performing a predetermined analysis based on the data stored in the RAM 30c, only the voltage signal of the second frequency band is filtered from the voltage signal synthesized in a plurality of frequency bands, and the voltage value of the voltage signal Are stored in a predetermined storage area such as the RAM 30c in association with the time.

(Step S202)
Next, it is determined whether or not the second threshold value change flag is ON. As will be described later, the second threshold value change flag is set on condition that the voltage value related to the voltage signal in the second frequency band (hereinafter referred to as the second voltage value) exceeds the second high threshold value. Are stored in the threshold value change flag storage area.

(Step S203) (Step S210)
If it is determined in step S202 that the second threshold value change flag is not ON, it is determined whether or not the second voltage value exceeds the second high threshold value (step S203).
If it is determined that the second high threshold is not exceeded, a second normal detection signal is output (step S210), and the process ends.

(Step S204) (Step S205) (Step S206)
If it is determined in step S203 that the second high threshold has been exceeded, the second threshold change flag is turned ON (stored in the second threshold change flag storage area) (step S204). Subsequently, for example, a timer function is activated, and measurement of a period during which the second threshold value change flag is turned on (flag on period in FIG. 8) is started (step S205). Subsequently, a second abnormality detection signal is output (step S206).

(Step S207) (Step S208)
If it is determined in step S202 that the second threshold value change flag is ON, it is determined whether or not the flag ON time has expired (step S207).
If it is determined that the flag ON time has expired, the second threshold value change flag is turned OFF (step S208), and the process proceeds to step S209.
If it is determined that the flag ON time has not ended, the process proceeds to step S209 as it is.

(Step S209)
Here, it is determined whether or not the second voltage value exceeds the second low threshold value.
If it is determined that the second low threshold is not exceeded, a second normal detection signal is output (step S210), and the process ends.
If it is determined that the second low threshold value is exceeded, a second abnormality detection signal is output (step S206), and the process ends.

  Note that the voltage signals filtered through the first digital filter 34a and the second digital filter 34b are output separately as they are (or D / A converted), and it is determined whether the threshold value has been exceeded by the comparison means provided at the output destination. You may do it. In this case, since some voltage such as noise is always output, it is not always necessary to output a constant signal as described above.

  Moreover, although the method of providing the filter means 34 in the measurement unit 30 has been shown, as another method, the voltage generated by the detection unit 20 is branched, and the first filter circuit (bandpass filter) is connected to one side and the other In contrast, the second filter circuit (band pass filter) may be passed to obtain voltages of two types of frequency bands separately, and comparison means 36a and 36b may be provided for each to determine whether the threshold value has been exceeded. Absent.

  The circuit board 14 to which the detection unit 20, the filter circuit 22, the amplification circuit 24, and the measurement unit 30 are fixed includes, for example, a box part 41 in which plastic or the like is formed in a concave shape and a lid part 45 that fits into the box part 41. Covered with a case 40 (see FIG. 4). Through holes 14a and 14b are provided in the corners on the diagonal line of the circuit board 14, and the box part 41 and the lid part 45 also have through holes 41a and 41a at portions corresponding to the through holes 14a and 14b of the circuit board 14, respectively. 41b, 45a, 45b are provided. The through holes 41 a and 41 b on the box part 41 side are formed in the center of the columnar parts 42 a and 42 b projecting upward from the bottom surface of the box part 41, and the through holes 45 a and 45 b on the lid part 45 side are the back side of the lid part 45. Are drilled at the center of the columnar portions 46a and 46b projecting downward from the bottom. Thus, when the circuit board 14 is covered with the case 40, the circuit board 14 is sandwiched between the columnar portions 42 a and 42 b of the box portion 41 and the columnar portions 46 a and 46 b of the lid portion 45. Further, since the through holes 45a, 14a and 41a penetrate and the through holes 45b, 14b and 41b penetrate, the case 40 and the circuit board 14 can be fixed diagonally by two screws. The box portion 41 is provided with a through hole 47 at a position corresponding to the output connector 28 provided on the circuit board 14. The through hole 47 is closed by the output connector 28 in a state where the circuit board 14 is housed in the box portion 41.

  By covering the circuit board 14 with the case 40 in this manner, the detection unit 20 is blocked from the outside by the case 40, so that external air does not affect the detection unit 20. When the case 40 is not used, it is preferable to cover the detection unit 20 with an epoxy resin or the like so as not to be affected by air. The case may be covered with a case 40, or may be filled with an epoxy resin or the like in a state where the circuit board 14 is housed in the case 40. In this case, air is also shut off from the air in the case. It is not affected by. The material for coating and filling can be changed as appropriate.

  The vibration detection device 1 covered with the case 40 may be attached to the object by bonding the case 40 and the object, but screwed by a through hole provided in the case 40 and the circuit board 14. Is preferred. When the circuit board 14 is sandwiched between the box part 41 and the lid part 45, the vibration and distortion of the object are conducted to the circuit board 14 through the case 40, but the distortion and vibration of the object are screwed by screwing. Therefore, the detection accuracy is increased. Further, since the through holes for screwing are provided on the diagonal line, vibration is easily transmitted to the circuit board 14.

  Although the case where measurement is performed for two types of frequency bands has been shown, the present invention is not limited to this, and measurement can be performed for three or more types of frequency bands. In this case, for example, it can be realized by increasing the number of digital filters and determination means.

  Although the unimorph piezoelectric element has been described as an example of the piezoelectric element 10, the present invention is not limited to this, and a bimorph piezoelectric element can also be used. A bimorph piezoelectric element has a structure in which piezoelectric elements are bonded to both surfaces of a metal plate, and outputs a voltage in accordance with a change in external force due to vibration or the like, similarly to a unimorph piezoelectric element.

Example 1
The example which utilized the vibration detection apparatus 1 for the fraud prevention of a pachinko machine is shown. 9 to 11 show the configuration of the pachinko machine. A frame member (glass frame) 110 having a shape surrounding the game area 103 and projecting from the game board 101 toward the player is disposed on the outer peripheral portion of the game board 101 of the pachinko machine 100. The frame member 110 supports a glass plate at the center so as to be positioned in front of the game area, and an effect light 111 (lamp unit) including a plurality of lights 112 is installed on the upper side and the lower side. Each light 112 irradiates the player in front of the pachinko machine 100, and the light is driven by a motor (not shown) in the effect light 111 so that the irradiation position moves from the overhead of the player along the abdomen. The irradiation direction can be changed in the vertical direction. Each light 112 is rotated by a separate motor in the effect light 111 so that the light irradiation direction can be rotated so that the irradiation position forms a circle based on the pachinko machine 100 and can irradiate the periphery of the pachinko machine. .

  An operation handle 113 including a launching unit 292 is disposed below the frame member 110, and a game ball launched by driving the launching unit 292 rises between the rails 102a and 102b and reaches the upper position of the game board 101. After that, the game area 103 is dropped. In the game area 103, in addition to a plurality of nails (not shown) for dropping the game ball in an unspecified direction, a windmill and a entrance for changing the fall direction of the game ball are arranged.

  A symbol display unit 104 using, for example, a liquid crystal display (LCD) is disposed in the central portion of the game area 103. A first start port 105 capable of receiving a game ball is disposed below the symbol display unit 104, and a second start port 120 having a pair of movable pieces is disposed below the first start port 105. The second start port 120 makes it difficult to receive a game ball when the pair of movable pieces are closed, and makes it easier to receive the game ball than the first start port 105 when the pair is open.

  On the left side of the symbol display unit 104, a winning gate 106 for detecting the passing of a game ball and performing lottery of a normal symbol for opening the second start port 120 for a predetermined time is arranged. In a position below the winning gate 106, etc., a normal winning opening 107 is provided for acquiring a predetermined number (for example, ten) of winning balls when a game ball enters. At the bottom of the game area 103, a collection port 108 for collecting game balls that have not entered any of the entrances is disposed.

  When the game ball enters the first start port 105 or the second start port 120, the symbol display unit 104 starts a variation display of a plurality of decorative symbols, and stops the variation of the decorative symbol after a predetermined time has elapsed. If a specific symbol (for example, “777”) is prepared at the time of stoppage, it means that the right to execute the jackpot game (long win game) is acquired, and then the jackpot game (long hit game) is started. When the big hit game (long win game) is started, the opening / closing door 109a in the big prize opening unit 109 located below the game area 103 is repeatedly opened for a predetermined time (for example, 15 times) to enter the ball. Prize balls corresponding to game balls are paid out.

  Below the frame member 110, a receiving tray unit 119 to which game balls lent out from a lending device (not shown) is supplied is installed, and an operation handle 113 is arranged. The operation handle 113 protrudes from the game board 101 toward the player, and is operated by the player when the game ball is fired by driving the launcher.

  The operation handle 113 includes a firing instruction member 114 that drives the launching portion to launch a game ball. The firing instruction member 114 is provided on the outer peripheral portion of the operation handle 113 so as to rotate clockwise as viewed from the player, and gives a launching command to the launching portion when being directly operated by the player.

  On the upper side and the side of the symbol display unit 104, effects for the effect (hereinafter referred to as “direction effects”) 115 and 116 are arranged. The director 115 is driven by a solenoid, for example, and the director 116 is driven by a motor. By driving the similar directors 115 and 116 with different types of driving sources, the directors 115 and 116 can each have their own movements, and the stage effect is enhanced.

  A chance button 117 for accepting an operation by the player is also arranged below the frame member 110. The operation of the chance button 117 is effective while guidance for prompting the operation of the chance button 117 is displayed, for example, in a specific reach effect during the game.

  The frame member 110 has one end side (the left end side when viewed from the front) connected to the outer frame 123 so as to be rotatable by a connecting member 122, and can be opened and closed with respect to the outer frame 123. A lock mechanism 124 for fixing 110 and the outer frame 123 is provided. Fixing by the lock mechanism can be released by a dedicated key. A glass plate fixing hook 125 is provided on the back side of the frame member 110, and the glass plate 126 is detachable. An iron plate 127 formed in a plate shape is provided on the back side upper part of the frame member 110 so as to reinforce the strength of the frame member 110.

  A game board holding frame 128 is provided in contact with the inner peripheral surface of the outer frame 123 of the pachinko machine 100. The game board holding frame 128 has a game board fixing hook 128a for holding the game board 101 and a game board holding. A claw 128b is provided. In a state where the frame member 110 is closed, the outer frame 123 and the frame member 110 surround and abut the game board 101, so that a driver, a wire, etc. are illegally inserted between the outer frame 123 and the frame member 110. It is prevented. The outer frame 123 is made of a metal material such as aluminum, and the game board holding frame 128 is made of wood or the like. The materials of the outer frame 123 and the game board holding frame 128 are not limited to the above, and metals, wood, plastics, and the like can be used singly or in combination.

  The outer frame 123 incorporates a speaker 277 that outputs a production effect sound or a sound for notifying fraud. The speaker 277 has a function that can output high, medium, and low sound areas, and outputs a high sound, medium sound, and low sound in a well-balanced state during normal performance, but it is around when there is a special effect or fraud. It is controlled to output a high sound region high so that it can be heard well. Further, a board for connecting external terminals, a payout control board, and a power supply board are attached to the outer frame 123. These are respectively an outer end case (not shown), in order to prevent unauthorized operation from the outside. Covered by a payout control board case 131 and a power board cover 132.

  On the back surface of the game board 101, a board unit constituting the control means 200 including a main control board, a sub control board, a prize ball control board, and a lamp control board is provided (not shown). The substrate unit is covered with a substrate case (not shown) to prevent unauthorized operation from the outside. In addition, the substrate case is covered with a protective case 135 to enhance security.

  As shown in FIG. 12, the main control board 201 controls the basic operation related to the game of the pachinko machine 100, and executes a basic process according to the progress of the game content based on the program stored in the ROM 201b, and the calculation of the CPU 201a A RAM 201c and the like functioning as a data work area at the time of processing are provided. The main control board 201 performs lottery lottery triggered by a game ball entering the first start port 105 or the second start port 120, and commands related to effects stored in the ROM 201b based on the lottery result Make a selection.

  On the input side of the main control board 201, the relay board 204, a first start port detection unit 221 that detects that a game ball has entered the first start port 105, and a game ball enters the second start port 120. A second start opening detection unit 225 for detecting that the game ball has passed, a gate detection unit 222 for detecting that the game ball has passed through the winning gate 106, and a normal winning port detection for detecting the game ball that has entered the normal winning port 107. The unit 223 is connected to a special winning opening detection unit 224 that detects a game ball that has entered the special winning opening apparatus 9.

  A prize winning opening / closing part 231 is connected to the output side of the main control board 201. In the present embodiment, the prize winning opening / closing part 231 is constituted by a prize winning opening / closing solenoid (driving device) for opening / closing the opening / closing door 109a and a second starting opening / closing solenoid for opening / closing the second starting opening 120. Yes. The big prize opening / closing solenoid corresponds to the driving device of the opening / closing door opening / closing device of the present invention.

  The big prize opening / closing part 231 is controlled by the main control board 201, and in the big hit game (long win game, short win game), the big prize opening opening / closing solenoid is energized to open the opening / closing door 109a, and by the winning of the above normal symbol The second start port 120 is opened and closed by energizing the second start port opening / closing solenoid 120b.

  Connected to the input side of the sub-control board 202 is a relay board 204 and a chance button detector 220 for detecting that the chance button 117 has been operated. The sub-control board 202 mainly controls the effects during the game, and executes a lottery and effect processing of effects based on commands transmitted from the main control board 201, and a ROM 202b that stores programs and past effect patterns. And a RAM 202c functioning as a data work area during the arithmetic processing of the CPU 202a.

  When the sub control board 202 receives a command related to the effect transmitted from the main control board 201, the sub control board 202 performs a lottery based on the command to determine the effect such as the effect background pattern, the reach effect pattern, the appearance character, and the confirmation. The production control is performed. The symbol display unit 104 is connected to the output side of the sub-control board 202, and the decorative symbol effect is developed in the symbol display unit 104 according to the contents determined by the lottery. The sub-control board 202 is also provided with a VRAM 202 d for writing image data to be displayed on the symbol display unit 104.

  At normal times, the CPU 202a reads a program stored in the ROM 202b, executes various image processing such as background image display processing, symbol image display and variation processing, and character image display processing, and reads necessary image data from the ROM 202b to the VRAM 202d. Write. The background image, the symbol image, and the character image are superimposed and displayed on the symbol display unit 104 on the display screen. That is, the design image and the character image are displayed so as to be seen in front of the background image. At this time, if the background image and the design image overlap at the same position, the design image is preferentially stored in the VRAM 202d by referring to the Z value of the Z buffer of each image data by a known hidden surface removal method such as the Z buffer method. Let

  A speaker 277 is connected to the output side of the sub control board 202 and outputs sound as determined in the sub control board 202. Also connected to the output side of the sub control board 202 is a lamp control board 206 for controlling the lamp 262, the effect light 111, and the effect agent actuating device 254. The stage effect actuating device 254 is configured by a motor, a solenoid, and the like that actuate the stage actors such as the stage actors 115 and 116. The lamp control board 206 operates a program based on a command transmitted from the sub-control board 202 to execute an effect process, a ROM 206b that stores various effect pattern data, and a data work area at the time of arithmetic processing by the CPU 206a. RAM 206c or the like functioning as

  The lamp control board 206 performs lighting control for various lamps 262 provided on the game board 101, the base frame, and the like, and performs lighting control for a plurality of lights 112 in the effect light 111, so that light from each light 112 is transmitted. In order to change the irradiation direction, drive control for the motor is performed. The lamp control board 206 also performs drive control for a solenoid that operates the effect actor 115 based on a command transmitted from the sub control board 202, and performs drive control for a motor that operates the effect actor 116.

  A prize ball control board 203 is connected to the main control board 201 so as to be capable of bidirectional transmission. The prize ball control board 203 includes a CPU 203a that executes a program for prize ball control by operating a program stored in the ROM 203b, a RAM 203c that functions as a work area for data during arithmetic processing of the CPU 203a, and the like. The prize ball is controlled based on the program.

  The prize ball control board 203 performs control for paying out the number of prize balls at the time of entry to the payout unit 291 connected thereto. In addition, an operation of launching a game ball with respect to the launch unit 292 is detected, and the launch of the game ball is controlled. The payout unit 291 includes a motor for paying out a predetermined number from the game ball storage unit.

  The prize ball control board 203 corresponds to the game balls that have entered the respective entrances (first start port 105, second start port 120, normal winning port 107, large winning port hole 109) with respect to the payout unit 291. Control to pay out the number of winning balls. The launcher 292 includes a sensor (not shown) that detects a game operation by the player, a solenoid (not shown) that launches a game ball, and the like, and launches a game ball for gaming. When the game operation is detected by the sensor of the launching unit 292, the prize ball control board 203 drives the solenoid or the like in response to the detected game operation to intermittently fire the game ball, and enters the game area 103 of the game board 101. Send out a game ball.

  The vibration detection device 1 is screwed to a central portion (portion indicated by A in FIG. 10) of a plate-like iron plate 127 provided over the left and right sides on the back side of the frame member 110 while being enclosed in the case 40. By fixing the vibration detection device 1 to the hard plate-like member provided over a wide range as described above, the vibration generated in the pachinko machine 100 is easily transmitted to the vibration detection device 1. A relay board 204 is connected to the output side of the vibration detection apparatus 1, and the main control board 201 and the sub control board 202 are connected to the relay board 204, and processing for illegal actions is performed according to a signal from the vibration detection apparatus 1.

  In the present embodiment, the vibration detection device 1 causes the player to distort the frame member 110 and intrude a piano wire or wire into the game board 101 to bend a nail and so on (so-called barbits) and the pachinko machine 100. This is to simultaneously detect fraud (so-called dotting, hitting a table) that changes the behavior of a game ball by hitting it. Here, when an external force over time such as distortion caused by a barb is applied, a voltage having a frequency band of 0.1 Hz to 10 Hz, particularly a voltage of 1 Hz to 5 Hz, is characteristically generated in the detection unit 20. In addition, when a momentary impact such as hitting with a pounding is applied, a voltage having a frequency band of 10 Hz to 40 Hz, particularly a voltage of 20 Hz to 40 Hz, is characteristically generated in the detection unit 20. The frequency of the voltage generated from the detection unit 20 due to the vibration of the game ball generated during the game, the vibration of the launching unit, the vibration of the variable winning device (opening / closing door 109a), and the vibrations of the stage effects 115 and 116 is as follows. , Both appear characteristically at several kHz.

  The filter circuit 22 includes a high-pass filter that filters a voltage having a frequency of 0.1 Hz or more and a low-pass filter that filters a voltage having a frequency of 50 Hz or less. Accordingly, the frequency band (0.1 Hz to 10 Hz) for detecting distortion and the like from the voltage output from the detection unit 20 and the frequency band (10 Hz to 40 Hz) for detecting hit and the like are included in the range of 0.1 Hz to 50 Hz. Can be filtered, and other noise components including a voltage generated by vibration of a game ball or the like can be cut. The amplifier circuit 24 is a circuit that amplifies the input voltage about three times. As a result, the voltage from which noise has been removed by the filter circuit 22 is amplified and input to the measuring unit 30.

  In the measuring unit 30, the input voltage in the frequency band from 0.1 Hz to 50 Hz is first A / D converted from an analog voltage to a digital voltage signal. Next, a first measurement voltage (frequency band of 0.1 Hz to 10 Hz) and a frequency of 10 Hz to 40 Hz that have passed through a digital low-pass filter that is a first filter 34a that filters only a voltage signal having a frequency of 10 Hz or less are obtained. The second measured voltage (frequency band of 10 Hz to 40 Hz) that has passed through the digital bandpass filter, which is the second filter 34b that filters only the voltage signal, has the first comparison means 36a and the second comparison means 36b, respectively. Are compared. If a digital bandpass filter that filters voltage signals in the frequency band of 1 Hz to 5 Hz is used as the first filter 34a, and a digital bandpass filter that filters voltage signals in the frequency band of 20Hz to 40Hz is used as the second filter 34b. Therefore, it is possible to perform waveform analysis processing with higher accuracy.

  The first measurement voltage is compared by the first comparison means 36a to determine whether it is equal to or higher than a preset distortion threshold value (first threshold value), and when it is equal to or higher than the distortion threshold value, a distortion detection signal indicating that is relayed. Output to the substrate 204. Further, the second measurement voltage is compared with a hitting threshold value (second threshold value) set in advance by the second comparing means 36b, and a hitting detection signal indicating that when the second measured voltage is higher than the hitting threshold value. Is output to the relay board 204. Since the voltage generated by distortion caused by fraud etc. is smaller than the voltage generated by hitting, the distortion threshold is set smaller, for example, the distortion threshold is 100 mV and the hitting threshold is 500 mV. In addition, a normal detection signal that is a constant pulse signal is output from the measurement unit 30 during normal operation. For this reason, when fraud such as disconnection of the output line from the vibration detection device 1 is performed, it can be detected by the fact that the main control board 201 cannot receive a normal detection signal.

  An operation example of the vibration detection apparatus 1 will be shown. When the player inserts a driver or the like between the frame member 110 and the outer frame 123 of the pachinko machine 100, the frame member 110 (iron plate) to which the vibration detection device 1 is fixed is distorted. As a result, a voltage including a frequency band of 0.1 Hz to 10 Hz, which is a frequency characteristic of distortion, is generated from the detection unit 20 in the vibration detection device 1. The voltage is cut by the filter circuit 22 at frequencies other than 0.1 Hz to 50 Hz, and then amplified by the amplifier circuit 24 by about three times and input to the measuring unit 30.

  The voltage input to the measurement unit 30 is converted into a digital voltage signal by the A / D conversion means 32, and a voltage signal of 0.1 Hz to 10 Hz (first measurement voltage) which is a frequency band of 10 Hz or less is converted by the digital low-pass filter. ) Is extracted. Further, a voltage signal (second measurement voltage) in a frequency band of 10 Hz to 40 Hz is extracted by the digital band pass filter.

  When the threshold value change flag is not turned on, it is determined by the first comparison means 36a whether the voltage value of the first measurement voltage is 100 mV or more. Further, it is determined whether the second measured voltage has a voltage value of 500 mV or more by the second comparing means. On the other hand, when the threshold value change flag is ON, it is determined whether the first measured voltage has a voltage value of 50 mV or more by the first comparing means 36a. Further, it is determined whether the second measured voltage has a voltage value of 300 mV or more by the second comparing means 36b. Since the first measurement voltage is generated due to distortion caused by the insertion of the driver, a voltage value of 500 mV or more is not measured by the second comparison unit 36b, but 100 mV or more is not measured by the first comparison unit 36a. Is measured, a distortion detection signal is transmitted to the relay substrate 204. As will be described later, a fraudulent act is notified by transmitting a distortion detection signal once. However, if the fraudulent person maintains the state where the driver is inserted, the voltage value decreases. As a result, if only the high threshold value is set, there is a possibility that a situation in which an illegal act is not notified even though the driver is inserted may occur. Therefore, the cheating is continued if the clerk or the like is not noticed by one notification. However, since a low threshold is provided in the present embodiment, even if the first measurement voltage due to distortion is 100 mv or less, if it is 50 mv or more, a distortion detection signal is output and notification of fraud is performed again. Is done.

  Further, when the player performs a pounding action such as strongly hitting the pachinko machine 100, the vibration is conducted to the iron plate 127 on which the vibration detection device 1 is fixed. As a result, a voltage including a frequency band of 10 Hz to 40 Hz, which is a frequency characteristic of hitting, is generated from the detection unit in the vibration detection device 1. The voltage is cut by the filter circuit 22 at frequencies other than 0.1 Hz to 50 Hz, and then amplified by the amplifier circuit 24 by about three times and input to the measuring unit 30.

  The voltage input to the measuring unit 30 is converted into a digital voltage signal by the A / D conversion means 32, and the digital low-pass filter that is the first filter means 34a has a frequency band of 0.1 Hz to 10 Hz that is a frequency band of 10 Hz or less. A voltage signal (first measurement voltage) is extracted. Further, a voltage signal (second measurement voltage) in the frequency band of 10 Hz to 40 Hz is extracted by a digital bandpass filter which is the second filter means 34b.

  When the threshold value change flag is not turned on, it is determined by the first comparison means 36a whether the voltage value of the first measurement voltage is 100 mV or more. Further, it is determined whether the second measured voltage has a voltage value of 500 mV or more by the second comparing means 36b. On the other hand, when the threshold value change flag is ON, it is determined whether the first measured voltage has a voltage value of 50 mV or more by the first comparing means 36a. Further, it is determined whether the second measured voltage has a voltage value of 300 mV or more by the second comparing means 36b. Since vibration is generated by strongly hitting the pachinko machine 100, a voltage value of 100 mV or more is not measured by the first comparison unit 36a, but a voltage of 500 mV or more is measured by the second comparison unit 36b. A hit detection signal is transmitted to the control board 201. Then, as described later, when the tapping detection signal is transmitted once, the cheating person weakens the tapping strength when the cheating is notified. At this time, even if the second measurement voltage resulting from the hit is 500 mv or less, if the hit voltage is 300 mv or more, the hit detection signal is output, so that the misconduct is notified again.

  Processing performed by the main control board 201 for an illegal act will be described with reference to FIG. First, the main control board 201 detects whether there is an input signal from the vibration detection device 1 via the relay board 204 (step S101). Since the vibration detection device 1 outputs a normal detection signal to the main control board 201 when a fraudulent act is not performed (when a distortion detection signal and a hit detection signal are not transmitted), the main control board 201 is output. If no signal is detected from the vibration detection device 1 in FIG. 5, an error detection process is performed and an error message is transmitted to the management device (for example, a hall computer) (step S107). This makes it possible to check for disconnection or the like by the hall clerk.

  When it is determined that the signal is a normal detection signal when the signal from the vibration detection device 1 is input, the subsequent processing is not performed and it is detected again whether there is an input signal (step S102). If it is determined that the signal from the vibration detection device 1 is not a normal detection signal, it is next determined whether it is a distortion detection signal (step S103). If it is determined that the signal is a distortion detection signal, a distortion detection process is performed (step S104).

  According to the distortion detection process, when a distortion notification command is sent from the main control board 201 to the prize ball control board 203, a launch stop process is performed to make it impossible to launch a game ball, and a payout stop process is performed to play a game. The ball is no longer paid out. After transmitting the distortion notification command, the main control board 201 may stop the basic operation so that signals from the detection units are not input. In this case, fraud can be further prevented by adopting a configuration in which recovery is performed by a recovery process by a staff member. In addition, a distortion notification command is sent from the relay board 204 to the sub-control board 202, and an alarm sound is output and a message indicating that “the door is open” is displayed and a voice notification is given. Notification of misconduct by flashing or the like can be performed. Accordingly, it is possible to notify the attendant at the game hall that excessive distortion has been applied to the pachinko machine 100, and the attendant can visit the pachinko machine 100 to perform necessary treatment.

  If it is determined in step S103 that it is not a distortion detection signal, it is determined whether or not it is a hit detection signal (step S105). If it is determined that the signal is a hit detection signal, hit detection processing is performed (step S106).

  According to the hit detection process, when a hit notification command is sent from the main control board 201 to the prize ball control board 203, the launch stop process is performed and the game ball cannot be launched, and the payout stop process is performed and the game is stopped. The ball is no longer paid out. After transmitting the hit notification command, the main control board 201 may stop the basic operation so that signals from the detection units are not input. In this case, fraud can be further prevented by adopting a configuration in which recovery is performed by a recovery process by a staff member. In addition, a hit notification command is sent from the relay board 204 to the sub-control board 202, and a display notification is issued to instruct not to hit the door with the output of an alarm sound, or the effect light 111 blinks by the lamp control board 206, etc. Notifications can be made. Thereby, it is possible to notify the attendant at the game hall that an excessive impact has been applied to the pachinko machine 100, so that the attendant can visit the pachinko machine 100 and perform necessary measures.

  In the case of performing a process for stopping a part or all of the functions of the game by the distortion detection process and the hit detection process, the game state immediately before the distortion detection signal and the hit detection signal are input is stored in the main control board 201. It is preferable to be configured. This makes it possible to restore the gaming state when the game is restored because it is determined by the clerk's confirmation that it is not an illegal act.

  If it is determined in step S105 that the signal is not a hit detection signal, it is considered that an unknown signal other than the normal detection signal, the distortion detection signal, and the hit detection signal is input. At this time, error detection processing is performed and managed. An error message is sent to the device (eg hall computer). As a result, the hall clerk confirms that the vibration detection device 1 is malfunctioning or malfunctioning. In addition, although the structure which performs the same error detection process by the case where the signal from the vibration detection apparatus 1 is not input, and the case where an unknown signal is input was shown, it is good also as a different error process, respectively.

  In addition, when a distortion detection signal is output, you may make it alert | report only with respect to the management apparatus of a pachinko hall. Unlike the dodge that is the target of the tapping detection signal, the barrage that is the target of the distortion detection signal has a strong tendency to perform the goto action continuously for a long time, so only the management device such as a hall computer is notified. It is possible to control by security guards during the goto act.

(Example 2)
The example which used the vibration detection apparatus 1 for the slot machine is shown. 14 and 15 show the configuration of the slot machine. In the slot machine 1001, a front door 1003 having a front mask formed on the front surface is attached so as to be openable and closable by a connecting member that is rotatable with respect to an opening of a housing 1002 that is a substantially rectangular box. The front mask is roughly divided into an upper panel portion 1100, a middle panel portion 1200, and a lower panel portion 1300 from the top, and these are integrally formed of a hard plastic designed to enhance visual effects as a decorative board. Further, a tray member 1004 having a tray 1004a for storing medals is provided below the lower panel portion 1300.

  The upper panel portion 1100 has a built-in visual effect lamp (fever lamp) such as an upper lamp or a corner lamp constituted by high-intensity light-emitting diodes (LEDs). The production is appealing to the visual sense of the elderly. In addition, speakers are built in the left and right positions of the upper panel portion 1100, respectively, and a game is produced with sound effects and musical sounds. Further, a liquid crystal display device (not shown) is built in a central position between the left and right speakers.

  The liquid crystal display device displays a moving image that is appropriately selected according to the progress of the game to give a story to the game, and a more dynamic image is displayed in the case of a big game such as a bonus game. , Such as causing the player to expect high dividends.

  An acrylic middle panel 1008 in which a rectangular transparent display window 1008a is formed is attached to the middle middle panel portion 1200. The three reels 1010a, 1010b, and 1010c provided in the housing 1002 can be viewed by the player through the display window 1008a. Below the middle panel 1008, a table-like portion slightly projecting forward is formed, a medal insertion portion 1011 having a medal insertion slot, a bet button 1012, a start lever 1013, three stop buttons 1014a, 1014b, 1014c etc. are arranged.

  When the player inserts medals from the medal insertion unit 1011, up to the maximum number of medals can be stored (credited) in the slot machine 1001. The bet button 1012 is a push-type button switch for presenting the number of medals bet on the game. The start lever 1013 is a lever switch for giving an instruction to rotate the reels 1010a, 1010b, and 1010c all at once. The stop buttons 1014a, 1014b, and 1014c are push-type button switches for individually instructing to stop the rotation of the reels 1010a, 1010b, and 1010c, and are arranged in parallel corresponding to the arrangement of the reels.

  On the lower panel 1015 constituting the lower panel portion 1300 of the front mask, for example, a picture (not shown) of an appearing character is printed and displayed so that the player can recognize the model type of the slot machine 1001 and the like. . The tray member 1004 provided at the lowermost part of the front door 1003 incorporates a medal payout opening 1016 for paying out medals by winning prizes and the like, and a speaker for generating effect sound according to the progress of the game.

  Inside the casing 1002, a main control board 1021, which is a control unit that performs overall control of the overall operation of the slot machine 1001, is attached to the upper position of the casing 1002. The main control board 1021 is a microcomputer-based control circuit board on which electronic components such as an interface circuit having a matching function when communicating with a CPU, ROM, RAM, and other peripheral devices are mounted, and is housed in a transparent board case. The housing 1002 is fixed so as not to be detached.

  Near the center of the housing 1002, a reel unit 1010 in which three reels 1010a, 1010b, and 1010c are arranged in parallel in the axial direction is opposed to the display window 1008a formed on the front door 3 side. The frame 1022 is fixed. A reel device substrate (not shown) is attached to the upper portion of the reel unit 1010. The spinning device substrate outputs a drive pulse signal that is current-amplified based on the pulse data from the main control substrate 1021 to the stepping motors of the reels 1010a, 1010b, and 1010c, thereby controlling the rotation and stop of each reel. It is carried out.

  In the space below the reel unit 1010, a medal payout device 1023 for releasing medals at the time of a prize payout or the like is installed. The medal payout device 1023 stores medals inserted in the medal insertion unit 1011 in the hopper unit 1023a, and releases a medal stored in the hopper unit 1023a when receiving a payout command signal for instructing to pay out medals from the main control board 1021. It is discharged to the outside through the slit 1023b. The discharge slit 1023b is provided with a payout sensor 1063, which detects the medals released one by one and outputs them to the main control board 1021. As a result, the main control board 1021 can perform control for paying out the required payout number (command payout amount) based on the payout command signal while counting the released medals.

  On the side of the medal payout device 1023, there are an overflow tank 1024 for storing medals overflowing from the hopper 1022a, and a main power supply device 1025 for distributing required power to each device built in the slot machine 1001. is set up.

  Further, the side plate adjacent to the main control board 1021 transmits a signal indicating a gaming state such as a jackpot in the slot machine 1001 and an operating state such as insertion / payout of medals to an external management device (for example, a hall computer). An external concentration terminal board 1026 is attached.

  The front door 1003 has a front mask integrally formed of relatively hard plastic as a main frame, and has a horizontal frame 1311 and a vertical frame 1312 which are long sheet metal members at the upper end and both left and right ends on the back side. , 1313 are fixed with screws. An upper panel assembly 1032 incorporating an LED substrate, a speaker, a liquid crystal display device, and the like on which a light emitting diode (LED) as a light source such as the upper lamp and the corner lamp described above is mounted is attached to the upper part on the back side of the front door 1003. Yes. Further, a sub-control board 1033 for driving the upper panel assembly and mainly performing control related to game effects is attached.

  Below the sub-control board 1033, an intermediate panel 1008 having a transparent display window 1008 a is provided on the front surface, and a cold cathode fluorescent tube 1034 that irradiates the outer peripheral surfaces of the reels 1010 a, 1010 b, and 1010 c, and a picture of the intermediate panel 1008 A lamp house unit in which a plurality of lamps 1035 and 1035 for lighting display and a central display board 1036 for relaying outputs of switches such as a start lever 1013 and stop buttons 1014a, 1014b and 1014c to the main control board 1021 are assembled. 1037 is attached.

  A medal selector 1038 is attached below the lamp house unit 1037. The medal selector 1038 is provided to determine whether the medal inserted in the medal insertion unit 1011 on the front is correct or not, and to count the number of regular medals inserted. That is, when the medal selector 1038 determines that the inserted medal is genuine, the medal is passed to the medal storage guide 1039 side, and the medal sensor, which is an optical sensor, detects the medal and goes to the main control board 1021. The input signal is output. Therefore, if the medal selector is illegally operated, there is a possibility that an unjust medal will be paid out. The medal storage guide 1039 guides and stores the regular medals passed by the medal selector 1038 to the hopper portion 1023a of the medal payout device 1023 on the housing 1002 side.

  A lower panel unit 1040 in which the lower panel 1015 and the like are unitized is attached below the medal selector 1038. In addition, the medal payout exit 1016 of the front door 1003 communicates with the cancel chute 1041 for guiding the medal and foreign matter determined to be inappropriate and removed by the medal selector 1038 to the front tray 1004a, and the medal payout exit 1016 is also communicated. A payout chute 1042 that guides the medals discharged by the payout device 1023 and pays it out to the tray 1004a is provided on the back side of the lower panel unit 1040. Further, below the lower panel unit 1040, speakers 1044a and 1044b facing the sound emitting units 1017a and 1017b on the front surface are attached.

  The vibration detection device 1 is screwed to the center portion (portion shown by B in FIG. 13) of the horizontal frame 1311 provided on the back side of the front door 1003 in a state of being enclosed in the case 40. By fixing the vibration detection device 1 to the hard plate-like member provided over a wide range as described above, vibration generated in the slot machine 1001 is easily transmitted to the vibration detection device 1. The output side of the vibration detection apparatus 1 is connected to the relay board 204 connected to the main control board 1021 and the sub control board 1033, and performs processing for fraud in accordance with a signal from the vibration detection apparatus 1.

  In the present embodiment, the vibration detection device 1 causes the player to open the front door 1003 and illegally operate the medal selector (illegal act) and to act that may damage the slot machine 1001 by force ( Damage action) at the same time. Here, when an external force such as distortion due to fraud is gradually applied, a voltage having a frequency band of 0.1 Hz to 10 Hz, particularly a voltage of 1 Hz to 5 Hz, is characteristically generated in the detection unit 20. In addition, when an impact such as tapping due to a breaking action is applied rapidly, a voltage in a frequency band of 10 Hz to 40 Hz, particularly a voltage of 20 Hz to 40 Hz, is characteristically generated in the detection unit 20. Note that the frequency of the voltage generated from the detection unit 20 due to the vibration of the reels and the like generated during the game is characteristic at several kHz.

  Since the configurations of the filter circuit 22 and the amplifier circuit 24 are the same as those in the first embodiment, a description thereof will be omitted. In the measurement unit 30, if the threshold change flag is not turned on, the distortion high threshold is 200 mV and the hitting high threshold is 800 mV. If the threshold change flag is turned on, the distortion low threshold is 100 mV and the hitting. The low threshold for use is 400 mV. It is larger than the setting for the pachinko machine 1. In the slot machine 1001, the act of hitting, such as hitting the slot button 1014 to stop the reel, is performed on a daily basis, and if a vibration caused by this is detected, it will interfere with normal games. Therefore, the hitting threshold is set large. Further, since the voltage generated when the front door 1003 is pry open is larger than the voltage generated when the frame member 110 of the pachinko machine 1 is distorted, the distortion threshold is set large. Since the configuration of the measuring unit 30 other than this is the same as that of the first embodiment, a description thereof will be omitted.

  An operation example of the vibration detection apparatus 1 will be shown. When the player tries to open the front door 1003 of the slot machine 1001, the horizontal frame 1311 to which the vibration detection device 1 is fixed is distorted. As a result, a voltage including a frequency band of 0.1 Hz to 10 Hz, which is a frequency characteristic of distortion, is generated from the detection unit in the vibration detection device 1. The voltage is cut by the filter circuit 22 at frequencies other than 0.1 Hz to 50 Hz, and then amplified by the amplifier circuit 24 by about three times and input to the measuring unit 30.

  The voltage input to the measuring unit 30 is converted into a digital voltage signal by the A / D conversion means 32, and the digital low-pass filter that is the first filter means 34a has a frequency band of 0.1 Hz to 10 Hz that is a frequency band of 10 Hz or less. A voltage signal (first measurement voltage) is extracted. Further, a voltage signal (second measurement voltage) in the frequency band of 10 Hz to 40 Hz is extracted by a digital bandpass filter which is the second filter means 34b.

  When the threshold value change flag is not turned on, it is determined by the first comparison means 36a whether the voltage value of the first measurement voltage is 200 mV or more. Further, it is determined whether the second measured voltage has a voltage value of 800 mV or more by the second comparing means 36b. On the other hand, when the threshold value change flag is ON, it is determined whether or not the voltage value of the first measurement voltage is 100 mV or more by the first comparison unit 36a. Further, it is determined whether the second measured voltage has a voltage value of 400 mV or more by the second comparing means 36b. Since the slot machine 1001 is greatly distorted, a voltage of 200 mV or higher is measured by the first measuring unit, and thus a distortion detection signal is transmitted to the main control board 1021.

  Further, when the player hits the slot machine 1001 strongly, the vibration is transmitted to the horizontal frame 1311 on which the vibration detection device 1 is fixed. As a result, a voltage including a frequency band of 10 Hz to 40 Hz, which is a frequency characteristic of hitting, is generated from the detection unit in the vibration detection device 1. The voltage is cut by the filter circuit 22 at frequencies other than 0.1 Hz to 50 Hz, and then amplified by the amplifier circuit 24 by about three times and input to the measuring unit 30.

  The voltage input to the measurement unit 30 is converted into a digital voltage signal by the A / D conversion means 32, and a voltage signal of 0.1 Hz to 10 Hz (first measurement voltage) which is a frequency band of 10 Hz or less is converted by the digital low-pass filter. ) Is extracted. Further, a voltage signal (second measurement voltage) in a frequency band of 10 Hz to 40 Hz is extracted by the digital band pass filter.

  When the threshold value change flag is not turned on, it is determined by the first comparison means 36a whether the voltage value of the first measurement voltage is 200 mV or more. Further, it is determined whether the second measured voltage has a voltage value of 800 mV or more by the second comparing means 36b. On the other hand, when the threshold value change flag is ON, it is determined whether or not the voltage value of the first measurement voltage is 100 mV or more by the first comparison unit 36a. Further, it is determined whether the second measured voltage has a voltage value of 400 mV or more by the second comparing means 36b. Since vibration is generated by hitting the slot machine 1001 strongly, a voltage of 800 mV or higher is measured by the second comparison unit 36b, and a hit detection signal is transmitted to the main control board.

  The processing by the main control board 1021 for fraud is the same as in the first embodiment, and a lamp, a speaker, a liquid crystal display, etc., depending on the type of notification (injustice, damage, etc.) in which notification to the player and notification to the staff are detected As appropriate.

(Example 3)
The example which used the vibration detection apparatus 1 for the vending machine is shown. FIG. 16 shows the configuration of the vending machine. The vending machine 2001 includes a main body cabinet 2010 that is a substantially rectangular heat insulator having an open front surface, a main door 2020 and an inner door 2030 provided on the front surface, and a bottom plate 2011 in the upper and lower stages of the main body cabinet 2010. And a heat exchanger that cools the serpen rack 2040 in the lower part, and the upper part is partitioned by, for example, two heat insulating partition plates 2041 to store the product in a state of maintaining a desired temperature. A condenser 2045 is provided.

  The main door 2020 is for opening and closing the front opening of the main body cabinet 2010. On the outside, a product display room where product samples are displayed, a selection button for selecting a product to be sold, and a coin are inserted. There are arranged a coin input port, a product outlet for taking out the paid-out products, and the like. Also, on the inside, a main control in which a bill validator 2022 for managing banknotes, a coin mechanism 2023 for managing coins, a cash box 2025 for storing coins overflowing from the coin mechanism 2023, and boards for controlling the whole are housed. A substrate case 2050 is provided.

  The inner door 2030 opens and closes the front surface of the serpen rack 2040 to keep the inside product warm, and is a box-shaped structure having a heat insulator inside. Each of the serpen racks 2040 has a merchandise chute 2042 for storing the merchandise in a manner arranged in the vertical direction and discharging the merchandise one by one to the sales outlet 2021 of the outer door according to a sales signal.

  The vibration detection device 1 is screwed to the vicinity of the building validator 2022 provided on the back side of the main door 2020 (portion shown in FIG. 16C) while being enclosed in the case 40. A main control board (not shown) in the main control board case 2050 is connected to the output side of the vibration detection apparatus 1, and performs processing for fraud in accordance with a signal from the vibration detection apparatus 1.

  In the present embodiment, the vibration detection device 1 causes the user to open the main door 2020 to steal money (theft) and the action that may cause the vending machine 2001 to be strongly damaged (damage). Are detected at the same time. Here, when an external force such as distortion due to theft is applied, a voltage having a frequency band of 0.1 Hz to 10 Hz, particularly a voltage of 1 Hz to 5 Hz, is characteristically generated in the detection unit. In addition, when a momentary impact such as tapping due to damage is applied, a voltage having a frequency band of 10 Hz to 40 Hz, particularly a voltage of 20 Hz to 40 Hz, is characteristically generated in the detection unit.

  Since the configurations of the filter circuit 22 and the amplifier circuit 24 are the same as those in the first embodiment, a description thereof will be omitted. In the measurement unit 30, a digital bandpass filter that filters a voltage signal in the frequency band of 1 Hz to 5 Hz as the first filter means 34a, and a digital that filters a voltage signal in the frequency band of 20Hz to 40Hz as the second filter means 34b. A band pass filter is used. At this time, the high threshold for distortion is 200 mV, the high threshold for hitting is 400 mV and 800 mV, the low threshold for distortion is 100 mV, and the low threshold for hitting is 400 mV.

  Vending machines 2001 have various installation locations, and are particularly susceptible to various vibrations when installed outdoors. For this reason, malfunctions increase unless it is possible to accurately detect distortion or vibration caused by tapping. Therefore, the voltage is measured in a narrower frequency band than in the case of a pachinko machine.

  In addition, the vending machine 2001 is often located at a location away from the installation location by the administrator, and the user often performs mischief such as tapping. For this reason, if a notification or the like is given for an impact that does not cause damage, a normal operation is hindered. However, even if the impact does not cause breakage, it can be expected that mischief can be reduced by preventing this. For this reason, two types of high thresholds for hitting are set, and processing according to the size of the hitting can be performed. Since the configuration of the measuring unit 30 other than this is the same as that of the first embodiment, a description thereof will be omitted.

  An operation example of the vibration detection apparatus 1 will be shown. When the user tries to open the main door 2020 of the vending machine 2001, the main door 2020 to which the vibration detection device 1 is fixed is distorted. As a result, a voltage including a frequency band of 0.1 Hz to 10 Hz, which is a frequency characteristic of distortion, is generated from the detection unit 20 in the vibration detection device 1. The voltage is cut by the filter circuit 22 at frequencies other than 0.1 Hz to 50 Hz, and then amplified by the amplifier circuit 24 by about three times and input to the measuring unit 30.

  The voltage input to the measuring unit 30 is converted into a digital voltage signal by the A / D conversion means 32, and a voltage signal (first frequency) of 1 Hz to 5 Hz is converted by the digital bandpass filter which is the first filter means 34a. (Measured voltage) is extracted. Further, a voltage signal (second measurement voltage) in a frequency band of 20 Hz to 40 Hz is extracted by a digital bandpass filter which is the second filter means 34b.

  If the threshold value change flag is not ON, it is determined whether the voltage value is 200 mV or more by the first comparison unit 36a, and whether the voltage value is 400 mV or more or 800 mV or more by the second comparison unit 36b. Determined. On the other hand, if the threshold value change flag is ON, it is determined whether the voltage value is 100 mV or more by the first comparison unit 36a, and it is determined whether the voltage value is 400 mV or more by the second comparison unit 36b. When the main door 2020 is greatly distorted and a voltage of 200 mV or higher is measured by the first measuring unit, a distortion detection signal is transmitted to the relay board 204.

  Further, when the main door 2020 is strongly hit by the user, the vibration is transmitted to the main door 2020 to which the vibration detection device 1 is fixed. As a result, a voltage including a frequency band of 10 Hz to 40 Hz, which is a frequency characteristic of hitting, is generated from the detection unit 20 in the vibration detection device 1. The voltage is cut by the filter circuit 22 at frequencies other than 0.1 Hz to 50 Hz, and then amplified by the amplifier circuit 24 by about three times and input to the measuring unit 30.

  The voltage input to the measuring unit 30 is converted into a digital voltage signal by the A / D conversion means 32, and a voltage signal (first frequency) of 1 Hz to 5 Hz is converted by the digital bandpass filter which is the first filter means 34a. (Measured voltage) is extracted. Further, a voltage signal (second measurement voltage) in a frequency band of 20 Hz to 40 Hz is extracted by a digital bandpass filter which is the second filter means 34b.

  When the above threshold change flag is not ON, it is determined whether the voltage value is 200 mV or more by the first comparison unit 36a, and the voltage value is 400 mV or more by the second comparison unit 36b or 800 mV or more. It is determined whether there is any. On the other hand, when the threshold value change flag is ON, it is determined whether the voltage value is 100 mV or more by the first comparison unit 36a, and whether the voltage value is 400 mV or more is determined by the second comparison unit 36b. Is done. Thereby, when it is determined by the second comparison unit 36b that the threshold value has been exceeded, a hit detection signal is transmitted to the relay board 204.

  A process for cheating is described. When a distortion detection signal or a tapping detection signal is input to the main control board 201, since the criminality is high, a warning by voice, light, etc. is given by the sub control board 202, and a security company or the like is notified.

As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to these embodiments, and the design can be changed without departing from the scope of the present invention. Is included in the present invention.
In addition, each of the above-described embodiments can divert each other's technology as long as there is no particular contradiction or problem in its purpose and configuration.

(A) is a top view which shows typically the structure of the detection part in a vibration detection apparatus. (B) is a side view schematically showing a configuration of a detection unit in the vibration detection device. It is a schematic diagram which shows the bending direction of the detection part in a vibration detection apparatus, and the application direction of a voltage. It is a block diagram which shows the structure of a vibration detection apparatus. It is a perspective view which shows the relationship between a vibration detection apparatus and a case. It is a graph which shows the waveform of the voltage which arises in the detection part of a vibration detection apparatus. It is a graph which shows the waveform of the voltage which arises in the detection part of a vibration detection apparatus. It is a flowchart which shows the procedure of a 1st detection process. It is a flowchart which shows the procedure of a 2nd detection process. It is a front view which shows the structural example of the front surface of a pachinko machine. It is a perspective view which shows the structural example of the internal structure of a pachinko machine. It is a perspective view which shows the structural example of the back surface of a pachinko machine. It is a block diagram which shows the control means of a pachinko machine. It is a flowchart which shows the process of the main control board at the time of performing the signal processing from a vibration detection apparatus. It is a perspective view which shows the structural example of the front surface of a slot machine. It is a front view showing a configuration example of the internal structure of the slot machine. It is a perspective view which shows the structural example of the internal structure of a vending machine.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Vibration detection apparatus, 10 ... Piezoelectric element, 10a ... Piezoelectric ceramic, 10b, 10c ... Electrode, 12 ... Metal plate, 14 ... Circuit board, 14a, 14b ... Through-hole, 20 ... Detection part, 22 ... Filter circuit, 24 Amplifying circuit 28 ... Output connector 30 ... Measurement unit 32 ... A / D conversion means 34 ... Filter means 34a ... First filter means 34b ... Second filter means 36 ... Comparison means 36a ... First comparison means, 36b ... second comparison means, 40 ... case, 41 ... box part, 41a, 41b ... through hole, 42a, 42b ... columnar part, 45 ... lid part, 45a, 45b ... through hole, 46a , 46b ... Columnar part

Claims (2)

A detection unit that converts a pressure change applied to an object into a voltage and outputs the voltage; and
It consists of a measurement unit that measures the voltage output from the detection unit,
The measurement unit includes, from the voltage output from the detection unit, a voltage in a first frequency band corresponding to at least a pressure gradually applied to the object, and a first voltage corresponding to a pressure rapidly applied to the object. Filter means for separately passing voltages in two frequency bands;
Comparison means for comparing the voltage of the first frequency band and the voltage of the second frequency band with a high threshold value that is an upper limit value set for each frequency band;
An output means for outputting an abnormality detection signal when the voltage is equal to or higher than the high threshold ;
The comparing means sets the voltage of the first frequency band to the first frequency when the voltage of the first frequency band exceeds a high threshold that is the upper limit value corresponding to the first frequency band. The vibration detection device is characterized in that the comparison is made at a low threshold value lower than the high threshold value corresponding to the frequency band of The vibration detection apparatus according to claim 1, wherein the detection unit includes a unimorph piezoelectric element or a bimorph piezoelectric element.

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