JP4601642B2 - Pachinko machine - Google Patents

Description

The present invention, when a failure nail driven into the gaming surface plate of the pachinko gaming machine is bent illegally relates it to the detectable pachinko machines.

  In pachinko gaming machines, the angle of the obstacle nail that is positioned directly above the winning opening usually greatly affects the winning percentage of the game balls. For this reason, a person who illegally aims to acquire a winning ball inserts a wire or the like through a gap in a pachinko machine or through an illegally drilled hole, and illegally bends the obstacle nail located just above the winning hole. In other words, there is a problem in that it is easy to win a prize and an illegal act of illegally acquiring a prize ball is performed.

Therefore, conventionally, each obstacle nail driven into the game board of a pachinko machine is covered with a holding cylinder, and the holding cylinders of a plurality of adjacent obstacle nails are connected by an upper plate and a bottom plate, and are connected between the upper plate and the bottom plate. Patent Document 1 listed below proposes an invention in which the angular position of a plurality of adjacent obstacle nails is firmly held by the holding cylinder, thereby preventing an illegal bending action of the obstacle nails.
JP-A-7-303734

  However, as described above, when a holding cylinder is put on the obstacle nail and a plurality of nail holding cylinders are connected so as to be sandwiched between the upper plate and the bottom plate, the game ball is attached to the holding cylinder and the upper plate and the bottom plate connecting them. There is a high possibility that the flow path of the contacted game ball will change, and the player may feel uneasy, and there is a problem that it is difficult to adopt in reality.

This invention solves the above-mentioned subject, and it aims at providing the pachinko game machine which can prevent the illegal bending action of an obstruction nail.

A pachinko gaming machine according to a first aspect of the present invention includes a strain sensor attached in the vicinity of a driving portion of the obstacle nail driven into the game board, and a load applied to the strain sensor when the obstacle nail is bent. Bending detection means that outputs a bending detection signal based on the operation accompanying the occurrence of distortion of the strain sensor, and whether or not the obstacle nail is abnormally bent based on the bending detection signal output from the bending detection means An abnormal bending determining means, and an output means for outputting a determination result when the abnormal bending determining means determines that the bending is abnormal, and the abnormal bending determining means is output from the bending detecting means. A distorted waveform signal for a predetermined time, convert the distorted waveform signal into a digital value, store it as distorted waveform pattern data, analyze the distorted waveform pattern data, perform pattern recognition, and based on the pattern recognition, Song Characterized in that determines whether generation. According to the present invention, it is possible to detect an abnormal bending of the obstacle nail and to output a signal indicating the incorrect bending.

Further, the pachinko gaming machine of claim 2, the strain sensor is attached to implantation portion near the nails implanted into the game board, the load due to the bending of the nails is applied distortion in the distortion sensor And a bend detection means for outputting a bend detection signal based on the operation accompanying the occurrence of strain of the strain sensor, and whether or not the obstacle nail is bent abnormally based on the bend detection signal output from the bend detection means. An abnormal bending determination means for determining, and an output means for outputting a determination result when the abnormal bending determination means determines that the bending is abnormal, and a load cell type strain gauge as the strain sensor is an obstacle to the game board. The nail is inserted near the nail driving portion, and the driving portion for driving the obstacle nail is formed as an obstacle nail mounting body. The obstacle nail mounting body is fitted into an opening provided in the game board. Elasticity in the vicinity of the nail driving part Shape possible distortion part is provided, characterized in that the strain gauge is attached to the inside of the distortion portion.

According to a third aspect of the present invention, there is provided a pachinko gaming machine in which a strain sensor attached in the vicinity of a driving portion of the obstacle nail driven into the game board, and a load is applied along with the bending of the obstacle nail to cause distortion in the strain sensor. And a bend detection means for outputting a bend detection signal based on the operation accompanying the occurrence of strain of the strain sensor, and whether or not the obstacle nail is bent abnormally based on the bend detection signal output from the bend detection means. An abnormal bending determining means for determining, and an output means for outputting a determination result when the abnormal bending determining means determines that the bending is abnormal, and a piezoelectric element is formed on the back surface of the game board as the strain sensor. When a load is applied along with the bending of the obstacle nail, the voltage signal is output from the piezoelectric element, and the bending detection means outputs a voltage waveform signal as a bending detection signal. Is output

Further, in the pachinko gaming machine according to claims 1 to 3, there can be provided alarm generating means for generating an alarm when the abnormal bending determining means determines that abnormal bending has occurred in the obstacle nail.

Further, in the pachinko gaming machine according to claims 1 to 3, when the abnormal bending determining means determines that abnormal bending has occurred in the obstacle nail, it is possible to provide a firing stop control means for stopping the launching of the game ball. .

Further, in the pachinko gaming machine according to any one of claims 1 to 3, when the abnormal bending determining means determines that an abnormal bend has occurred in the obstacle nail, there is provided an illegal bending notifying means for notifying the occurrence of an abnormal bend. it can.

  According to the pachinko gaming machine having the above configuration, when the obstacle nail is bent illegally, a load is applied to the strain sensor to cause distortion in the strain sensor, and the bending detection signal is based on the operation accompanying the strain generation of the strain sensor. Therefore, the abnormal bending of the obstacle nail can be detected by the detection signal, thereby preventing the illegal bending action of the obstacle nail.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a front view of a game board 1 of a pachinko gaming machine. In the figure, a game area 3 is defined by an outer rail 2a and an inner rail 2b formed on the board surface of the game board 1, and the game balls launched by the ball striking device are guided into the game area 3, and various game balls are used. A large number of obstacle nails, windmills, and various winning holes are provided in the game area.

  A symbol variation display device 4 is arranged at the upper center of the game area 3 of the game board 1. The symbol variation display device 4 is provided with, for example, a full-color liquid crystal display, and is displayed so that, for example, three rows of symbols flow from the top to the bottom when starting a prize, and a predetermined symbol (for example, “777” or “666”) is displayed. Etc.), the game shifts to a special game state (big hit state).

  In addition, a start winning opening 5 for generating a start winning is disposed below the symbol variation display device 4 in the game area 3. A pair of obstacle nails 8 and 9 are arranged directly above the start winning opening 5. In particular, when the pair of obstacle nails 8, 9 is illegally bent, the obstacle nails 8, 9 are attached to the obstacle nail mounting body 10 in order to detect the illegal bending and immediately generate an alarm. The strain gauges 13 and 14 are provided in the obstacle nail mounting body 10.

  That is, as shown in FIG. 3, a rectangular opening 1a is formed at a position directly above the start winning opening 5 of the game board 1, and the obstacle nail attachment body 10 is fitted into the opening 1a so as to be detachably attached. It has been. The obstruction nail attachment body 10 is formed in a rectangular shape that can be closely fitted in the opening 1a. As shown in FIGS. 2 and 4, the base 15 located on the back side and the box shape located on the front side are formed. And a strain member 16. The base 15 is provided with a flange 15a that is brought into contact with the back side of the game board 1 when fitted into the opening 1a from the inside of the game board 1, and a fixing hole for the fixing screw 17 is provided in the flange 15a. It is done.

  The strain member 16 fitted to the front side of the base portion 15 is formed in a box shape from, for example, a synthetic resin, and a pair of obstacle nails 8 and 9 are driven (or screwed) into the strain member 16 from the front. The front ends of the obstacle nails 8 and 9 reach the base portion 15 and are fixed. However, a space is formed between the base portion 15 and the strain member 16, and the obstacle nails 8 and 9 are bent. In this case, the distorted portions 11 and 12 located on both sides of the places where the obstacle nails 8 and 9 of the distorting member 16 are driven are formed so as to be easily distorted by receiving a load. That is, the distorted portions 11 and 12 of the distorting member 16 are located on both sides of the place where the obstacle nails 8 and 9 are driven, and when the obstacle nails 8 and 9 are bent as shown in FIG. It is formed thin so as to be distorted by receiving a predetermined load.

  As shown in FIG. 4, load cell type strain gauges 13, 14 are attached as strain sensors inside the strained portions 11, 12 of the strain member 16. The strain gauges 13 and 14 are formed by sticking a super-strained aluminum alloy thin film to a substrate, and when a load is applied thereto, the strain gauges 13 and 14 are deformed to generate strain and change their electric resistance values. In order to take out the change in the resistance value as a voltage value, the strain gauges 13 and 14 are each bridge-connected together with other resistors. Then, when a constant voltage is applied to one end of the bridge circuit including the strain gauges 13 and 14 from the stabilized power source and the resistance value of the strain gauge 13 or 14 changes to change the balance of the bridge circuit, an output voltage is generated. And operates so as to be output as a bending strain detection signal.

  The detection signal output circuit 18 shown in the configuration diagram of FIG. 5 constitutes the bending detection means that detects the bending of the obstacle nail and outputs the detection signal, and includes the bridge circuit, the stabilized power supply circuit, and the detection signal amplification circuit. Including. An abnormal bending determination circuit 19 is connected to the output side of the detection signal output circuit 18, and an alarm device 20 is connected to the output side of the abnormal bending determination circuit 19.

The abnormal bending determination circuit 19 constitutes the above-described abnormal bending determination means that determines whether or not the bending is abnormal based on the detection signal. For this purpose, the abnormal bending determination circuit 19 receives a distortion detection signal (voltage signal corresponding to the magnitude of the distortion) V1 output from the detection signal output circuit 18, and is preset as shown in FIG. Compare with threshold V ₀ . At this time, when the abnormal bending determination circuit 19 determines that the level of the detection signal V ₁ is higher than the threshold value V ₀ , the abnormal bending determination circuit 19 determines that the obstacle nail 8 or 9 has been illegally bent, and sends an alarm signal to the alarm device 20. Output and generate an alarm.

  The alarm device 20 constitutes the alarm generation means. As the alarm device 20, it is possible to adopt a structure that blinks an alarm lamp or generates an alarm sound. The alarm device 20 is installed in a gaming machine or a part of an island where it is installed. The The abnormal bending determination circuit 19 can be configured by a discrete, an IC, or the like, but can also be configured by using a microcomputer and is installed inside the gaming machine.

  On the other hand, a winning gate 6 is arranged on the left side of the symbol variation display device 4 in the game board 1, a normal winning port 7 is arranged below it, and a normal winning port 7 is arranged on the right side. An electric blade is provided at the start winning opening 5 serving as an ordinary electric accessory, and is opened and closed by an electric blade solenoid (not shown). Furthermore, a large winning opening 21 of the variable winning device is arranged at the lower part of the game area 3.

  In the pachinko gaming machine having the above-described configuration, during the game, a fraudulent instrument 22 such as a wire is inserted into the game board 1 from a gap in the glass frame or the like or from a hole that has been illegally drilled. When the obstacle nails 8 and 9 positioned in the position are bent illegally as shown in FIG. 6, any portion of the distortion member 16 on the front side of the obstacle nail attachment body 10 is distorted. For example, as shown in FIG. 6, when the obstacle nail 8 is bent to the left side of the drawing, the strained portion 11 on the left side of the obstacle nail 8 is deformed and distorted.

At this time, the strain gauge 13 attached to the inside of the strained portion 11 is similarly distorted, and a load is applied thereto. When the strain gauge 13 receives a load, its resistance value changes according to the magnitude of the load. Therefore, the detection signal V ₁ corresponding to the load is output as a voltage signal from the detection signal output circuit 18 connected in a bridge as shown in FIG. The abnormal bending determination circuit 19 receives the detection signal V ₁ and compares the threshold value V ₀ set in advance with the level of the detection signal V ₁ to determine whether or not the bending is abnormal. Here, when the level of the input detection signal V ₁ is lower than the preset threshold value V ₀ , the abnormal bending determination circuit 19 determines that the bending is not abnormal and does not output an alarm signal. Therefore, an alarm signal is not output in the case of distortion caused by the game ball hitting the obstacle nails 8 and 9.

On the other hand, as shown in FIG. 7, when the level of the input detection signal V ₁ is higher than the preset threshold value V ₀ , the abnormal bending determination circuit 19 determines that the abnormal nail 8 or 9 has been bent abnormally. Then, an alarm signal is output to the alarm device 20. In this case, during the game of the pachinko machine, the obstacle nail 8 or 9 is illegally bent as shown in FIG. 6, an alarm is generated from the alarm device 20, and the obstacle nail 8 or 9 is illegally bent. It will be notified. Therefore, it is possible to prevent an illegal act such that an illegal wire or the like is inserted on the game board and the obstacle nail is bent illegally to make the game ball easy to win.

  By the way, the failure angle of pachinko gaming machine nails is adjusted on a daily basis in pachinko halls, but when adjusting the bending angle of obstacle nails, the operation of the abnormal bending determination circuit 19 can be stopped. In this case, adjustment can be made without issuing an alarm. It is also possible to adjust the threshold value of the determination circuit so that abnormal bending is not detected when fine bending angle adjustment is performed.

FIG. 8 shows a voltage waveform diagram in the abnormal bending determination circuit of another embodiment. As shown in FIG. 7, the abnormal bending determination circuit 19 sets a threshold value V ₀ in advance, compares the level of the detection signal V ₁ sent from the detection signal output circuit 18 with this threshold value V ₀ , and detects the detection signal V _1. If the level is higher than the threshold value V ₀ , it is determined that abnormal bending has occurred. As shown in FIG. 8, the voltage change rate Vc / t per unit time t of the detection signal V ₂ is captured, and this voltage is detected. When the rate of change exceeds a predetermined reference value, it can also be determined that abnormal bending has occurred.

In this case, the abnormal bending determination circuit monitors the voltage value of the detection signal V ₂ with time and calculates the voltage change rate Vc / t per unit time t every predetermined time. When the voltage change rate exceeds a predetermined reference value, the abnormal bending determination circuit determines that abnormal bending has occurred. Therefore, even when the obstacle nails 8 and 9 are bent relatively gently by using an illegal instrument 22 such as a wire and the level of the detection signal V ₂ does not exceed the predetermined value, the voltage change rate Vc / By looking at t, it is possible to detect illegal bending of the obstacle nail and further improve the anti-fraud effect.

  In the above-described embodiment, the abnormal bending of the pair of obstacle nails positioned directly above the start winning opening 5 is detected. However, the abnormal bending of the obstacle nails driven into other locations can also be detected. . Further, although a load cell type strain gauge is used as the strain sensor, a semiconductor type pressure sensor capable of detecting strain can also be used.

Further, the abnormal bending determination circuit 19 may be configured to perform determination by both determination based on comparison with a threshold value (example in FIG. 7) and determination based on the voltage change rate Vc / t (example in FIG. 8). it can. That is, the first fraud determination function for determining the fraudulent bending action of the obstacle nails 8 and 9 based on whether or not the voltage level of the detection signal V ₁ output from the detection signal output circuit 18 exceeds the threshold voltage V _0. And a second fraud determination function for determining a voltage change rate Vc / t per predetermined time of the voltage level of the detection signal V ₂ and determining an illegal bending action of the obstacle nails 8 and 9 based on the voltage change rate. Can also be provided to the abnormal bending determination circuit 19. In this case, if any one of the determination results obtained based on the detection signal V ₁ or V ₂ is abnormal, it can be determined that an abnormal bending action has been performed on the obstacle nails 8 and 9. The determination accuracy of the action detection can be further increased, and the fraud determination function can be maintained even when one of the fraud determination functions is impaired.

  9 to 12 show still another embodiment, FIG. 9 is a sectional view of the vicinity of the piezoelectric element for detecting the illegal bending, and FIG. 10 is a block diagram showing the configuration of an apparatus for detecting the illegal bending. This unauthorized bending detection apparatus can use the piezoelectric element 23 as a strain sensor, and the piezoelectric element 23 can use a general-purpose monomorph piezoelectric element as a strain sensor. The monomorph piezoelectric element is formed by bonding a film-like piezoelectric element (for example, a piezoelectric ceramic such as lead zirconate titanate or a piezoelectric polymer film) to a metal shim material.

  As shown in FIG. 9A, the piezoelectric element 23 is mounted in the vicinity of the obstacle nail 28 on the game board 1 to detect abnormal bending, and is particularly attached to the surface of the game board 1. The synthetic resin layer (plastic sheet or plate) 1a is disposed inside. As shown in FIG. 9A, when the piezoelectric element 23 is simply inserted inside the synthetic resin layer 1b on the surface of the game board 1, the surface of the synthetic resin layer 1b bulges. As described above, by forming a recess in the plywood portion of the game board 1 and embedding the piezoelectric element 23 in the recess, the piezoelectric element 23 is not expanded without swelling the synthetic resin layer 1b on the surface of the game board 1. Can be arranged. Furthermore, as shown in FIG. 9 (c), a recess can be formed on the back surface of the plywood near the obstacle nail 28 of the game board 1, and the piezoelectric element 23 can be attached to the bottom of the recess on the back surface. Also in this case, swelling on the surface of the game board 1 does not occur. As shown in FIG. 9, when the obstacle nail 28 driven into the plywood of the game board 1 is bent, stress (load) is applied to the piezoelectric element 23 via the plywood or the synthetic resin layer 1b.

  When the piezoelectric element 23 as a strain sensor receives a stress (load), the strain is generated, and a voltage signal corresponding to the strain is output. However, the faulty nail 28 driven into the surface of the game board 1 is improperly bent. In order to detect, the piezoelectric element 23 is disposed in the vicinity of the obstacle nail 28 as shown in FIG. 9, and when the obstacle nail 28 is bent illegally, the piezoelectric element 23 is distorted and a voltage signal is output. It has become.

  The apparatus for detecting the illegal bending receives the voltage signal output from the piezoelectric element 23 as a bending detection signal, amplifies the signal by an amplifier (not shown), and further cuts a frequency signal of a predetermined frequency or more through a bandpass filter. The signal is converted into a digital value and taken in as distorted waveform pattern data for a predetermined time.

  While the pachinko gaming machine is in operation, a relatively high frequency component signal is superimposed as a noise on the voltage waveform signal output from the piezoelectric element 23 when the game ball hits the obstacle nail 28 or the like. By passing the signal through a band-pass filter, the high-frequency component is removed, and only the waveform component necessary for detecting illegal bending is extracted.

  On the other hand, with respect to the distorted waveform pattern data captured as a digital value, it is determined whether or not the peak value of the waveform is greater than or equal to a preset threshold value Vo. Judge that there is a possibility. When the peak value of the waveform is equal to or greater than the threshold value Vo, pattern recognition is further performed on the distorted waveform pattern, and it is determined based on the pattern recognition whether or not abnormal bending has occurred in the obstacle nail 28. For this purpose, the unauthorized bending detection apparatus is configured using a microcomputer as shown in FIG. 10, and executes an unauthorized bending detection process.

  That is, the unauthorized bending detection device is configured with a microcomputer as a main part, and an input / output circuit 35 is connected to an A / D converter 34 for inputting a voltage waveform signal, and a voltage waveform output from the piezoelectric element 23. The signal is amplified through an amplifier (not shown), a high frequency component is removed through a band pass filter, and input to the A / D converter 34. The CPU 30 executes a program for illegal bending detection processing stored in advance in the ROM 31 or the storage device 33, and uses the temporary storage area of the RAM 32 constituting the work area, and the distortion waveform level and distortion waveform pattern pattern. Recognize and determine abnormal bends in the nails.

  The threshold value Vo, which is a criterion for detecting incorrect bending, is stored in advance in the storage device 33, but the angle of the obstacle nail 28 is adjusted on a daily basis, and the piezoelectric element 23 is subtly permanent by adjusting the angle. Distortion may occur and the voltage signal level during normal operation, that is, non-incorrect bending may increase. In such a case, the threshold value Vo, which is a criterion for determining the distortion waveform pattern, may be rewritten and reset when the obstacle nail 28 is adjusted.

  During operation of the pachinko gaming machine, the CPU 30 inputs a voltage waveform signal sent from the piezoelectric element 23 every predetermined time as a digital value through the A / D converter 34 and captures the data for a certain period of time as will be described later. Thus, distorted waveform pattern data is created. Further, the CPU 30 performs pattern recognition on the generated distortion waveform pattern data, and determines whether or not an abnormal bending has occurred in the obstacle nail 28.

  For pattern recognition of the distorted waveform pattern, for example, waveform features are extracted from the input distorted waveform pattern data, and the extracted features are distributed in the n-dimensional feature space as feature vectors. In the feature space, a determination boundary for determining whether or not there is an illegal bending is formed in advance. Then, the features extracted from the input distortion waveform pattern are plotted in the feature space, and it is determined whether or not the distortion waveform pattern is an incorrect bend according to the region sandwiching the determination boundary where the feature vector is located. To do.

  In order to output a command signal based on the determination result, a launch control unit 36 and an effect control unit 37 of the pachinko gaming machine are connected to the input / output circuit 35 of the microcomputer as shown in FIG. The firing control unit 36 is a control unit capable of controlling the firing of the hit ball. When it is determined that an abnormal bend has occurred in the obstacle nail 28 and a firing stop signal is output to the firing control unit 36, the firing control unit 36 is illustrated. The hitting ball launcher is controlled to stop hitting.

  The effect control unit 37 is a control unit that controls display of a moving image such as a character displayed as a background of a symbol or the like in the symbol variation display device 4 (FIG. 1) attached to the approximate center of the game board 1 of the pachinko gaming machine. Yes, the image data of the moving image stored in the memory in advance is read out, developed in the VRAM, and displayed on the symbol variation display device 4. In addition, when the illegal bending occurs in the obstacle nail 28 and a command signal for notifying the illegal bending is input, the effect control unit 37 displays the fact that the illegal bending has occurred by text display or image display. Alternatively, the production control unit 37 controls a sound generator (not shown) provided in the pachinko gaming machine when an illegal bend occurs in the obstacle nail 28 and a command signal for notifying the incorrect bend is input. It is configured to notify by voice that it has occurred.

  Next, the operation of the unauthorized bending detection apparatus having the above configuration will be described with reference to the flowchart of FIG. During the operation of the pachinko gaming machine, the CPU 30 of the unauthorized bending detection device enters the unauthorized bending detection processing of the obstacle nail 28 every predetermined time. The distortion detection data converted into a digital value through the D converter 34 is captured.

  For example, the obstacle nail 28 of the game board 1 is inserted into the game board 1 with a fraudulent instrument such as a wire through a gap in a glass frame or an illegally drilled hole during a pachinko game. When hooked and bent illegally, distortion occurs in the piezoelectric element 23 disposed in the vicinity of the obstacle nail 28, and depending on the magnitude of the distortion, as shown in FIGS. 12 (a), (b), and (c), A voltage waveform signal is output from the piezoelectric element 23.

  12A shows a voltage waveform from the piezoelectric element 23 when the obstacle nail 28 is suddenly bent with pliers, and FIG. 12B shows a piezoelectric waveform when one obstacle nail 28 is bent with a finger. 5 is a voltage waveform of the element 23. FIG. 12C shows a voltage waveform of the piezoelectric element 23 when the two obstacle nails 28 are bent with a finger. FIG. 12D shows a normal state in which no bending stress is generated in the obstacle nail 28. 3 is a voltage waveform of the piezoelectric element 23. As can be seen from the voltage waveforms in FIGS. 12A to 12D, when the obstacle nail 28 is bent, a voltage signal having a waveform that is clearly different from the normal time is generated. Depending on the condition, voltage waveform signals (distortion waveform patterns) of various shapes different from the piezoelectric element 23 are generated. For this reason, when the threshold Vo used as a criterion for the determination of the incorrect bending is set as shown in FIG. It is possible to detect an illegal bending of the obstacle nail 28.

  When the CPU 30 starts taking in strain detection data based on the voltage signal output from the piezoelectric element 23 in step 100, next, in step 110, the CPU 30 determines whether or not a predetermined time (for example, 2.5 seconds) has elapsed. If it is determined and before a predetermined time has elapsed, the process returns to step 100 again to capture distortion detection data. Thereby, distortion waveform pattern data having a predetermined time (for example, 2.5 seconds) width is created and stored in the RAM 32 (step 120).

  Next, in step 130, the CPU 30 compares the peak value of the voltage waveform signal, that is, the distorted waveform pattern data, with the threshold value Vo. If the peak value is equal to or higher than the threshold value Vo, the CPU 30 proceeds to the next step 140 and sets the fault nail 28 to an abnormal level. Judging that abnormal bending occurred. On the other hand, if the peak value is lower than the threshold value Vo, it is determined that an abnormal level of bending, that is, abnormal bending, has not occurred in the obstacle nail 28, and the current illegal bending detection process is terminated.

  If it is determined in step 140 that the bending is abnormal, the CPU 30 next performs pattern recognition of the input distortion waveform pattern in step 150. For pattern recognition of the distorted waveform pattern, for example, waveform features are extracted from the input distorted waveform pattern data, and the extracted features are distributed in the n-dimensional feature space as feature vectors. In the feature space, a decision boundary for determining whether or not there is an illegal bending is set in advance. Next, in step 160, the CPU 30 determines whether or not the bending is incorrect based on the pattern recognition result of the input distortion waveform pattern. That is, if the feature vector extracted from the input distortion waveform pattern data is in one region of the decision boundary, it is determined that the bending is not abnormal, and if it is in the other region, the abnormal nail 28 is bent abnormally. Is determined to have occurred.

  In step 170, finally, it is determined whether or not an abnormal bending has occurred in the obstacle nail 28 based on the peak value of the input distortion waveform and the pattern recognition result. For example, if the peak value of the input distortion waveform is relatively low and the position of the pattern recognition feature vector is in the abnormal bending area, but near the decision boundary, it is determined that the bending is not abnormal and the input If the peak value of the distorted waveform is relatively high, the position of the feature vector for pattern recognition is in an abnormal bending region, and is at a position away from the decision boundary, it is determined that an abnormal bending has occurred.

  If it is determined that the bending is not abnormal, the process of detecting this incorrect bending is terminated. On the other hand, if it is determined that an abnormal bending has occurred, the process proceeds to step 180 and the peak of the input distortion waveform is obtained. Based on the value and the pattern recognition result, the bending method is determined, for example, whether the obstacle nail 28 is strongly or illegally bent by a wire or the like, or the obstacle nail 28 is gradually bent by a human finger or the like. The data of the determination results of these illegal bending methods are stored in the storage device 33 and transferred to a hall management computer or the like for later elucidation of illegal acts.

  Next, proceeding from step 180 to step 190, assuming that the abnormal nail 28 is bent abnormally, the CPU 30 outputs a firing stop signal to the launch control unit 36 of the hit ball of the pachinko gaming machine to stop the launch of the hit ball. . Thereby, the launch of the hit ball of the pachinko gaming machine is stopped, and the illegal payout of the illegal prize ball due to the illegal winning that is caused by the abnormal bending of the obstacle nail 28 can be stopped. Further, in the next step 200, the CPU 30 outputs a command signal for the fraud notification effect to the effect control unit 37 of the pachinko gaming machine. At this time, the production control unit 37 displays that the obstacle nail 28 is illegally bent by characters or characters on the symbol variation display device 4 of FIG. 1, or that the obstacle nail 28 is illegally bent by voice. Is notified. As a result, the subsequent pachinko game in the state of the illegal obstacle nail 28 can be stopped and the illegal payout of the prize ball can be stopped.

  Thus, when the obstacle nail 28 is bent illegally, distortion occurs in the piezoelectric element 23 of the strain sensor, and a voltage waveform signal corresponding to the distortion is output from the piezoelectric element 23, and the distortion waveform pattern data created from the signal is output to the distortion waveform pattern data. Based on this, it is possible to detect an abnormal bending of the obstacle nail 28 and to prevent an illegal bending action of the obstacle nail. In addition, since the piezoelectric element 23 is used as a strain sensor, it is possible to accurately detect an incorrect bending of the obstacle nail without being affected by the nail adjustment.

  That is, the piezoelectric element 23 has a characteristic of outputting a voltage signal having an effective voltage value instantaneously at the time of receiving stress, and stress is applied to the piezoelectric element 23 at the time of nail adjustment. Even if it is output, thereafter, the voltage signal by the nail adjustment is not continuously output. For this reason, a voltage signal that can be detected from the piezoelectric element 23 is not output during normal operation of the pachinko gaming machine, and an effective voltage signal is output only when an abnormal bend occurs in the obstacle nail. Incorrect bending of the nail can be detected.

  In the above-described embodiment, the illegal bending detection device including a microcomputer as a main part is provided in the pachinko gaming machine. However, the voltage waveform signal output from the piezoelectric element 23 is captured, the peak value of the waveform is determined, and the distortion waveform An illegal bending detection device (microcomputer) that creates pattern data and performs pattern recognition or the like can be installed in a place other than a pachinko gaming machine, for example, in a game medium lending device between pachinko gaming machines in a hall island.

  Further, in the above-described embodiment, when the peak value of the voltage waveform signal is higher than the preset threshold value Vo and it is determined that an illegal bending has occurred based on the pattern recognition of the distorted waveform pattern data, an abnormal bending occurs in the obstacle nail 28. However, it can also be determined that the bending is incorrect only from the information that the peak value of the voltage waveform signal is higher than the preset threshold value Vo, or it can be determined that the incorrect bending occurs only from the information of pattern recognition of the distorted waveform pattern data. You can also

It is a front view of a game board of a pachinko gaming machine showing an embodiment of the present invention. It is an enlarged front view of an obstruction nail attachment body. It is a disassembled perspective view at the time of assembling an obstruction nail attachment body to the opening part of a game board. It is sectional drawing of an obstruction nail assembly. It is a block diagram showing the configuration of a circuit that detects an illegal bending of a failure nail and generates an alarm. It is sectional drawing of an obstruction nail assembly when an obstruction is bent. It is a voltage waveform diagram which shows the change of a detection signal. It is a voltage waveform diagram which shows the change of the detection signal of other embodiment. (A) (b) (c) is sectional drawing of the piezoelectric element vicinity for the illegal bending detection of the fault nail which shows further another embodiment, respectively. It is a block diagram of a configuration of an unauthorized bending detection device according to another embodiment. It is a flowchart which shows the illegal bending detection process of the same illegal bending detection apparatus. (A) (b) (c) is a waveform diagram of the voltage signal output from the piezoelectric element at the time of incorrect bending, respectively, (d) is a waveform diagram of the voltage signal at the normal time without incorrect bending.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Game board 1a Opening part 3 Game area 4 Symbol change display apparatus 5 Start winning opening 6 Winning gate 7 Normal winning opening 8 Obstacle nail 10 Obstacle nail attachment body 11 Strain part 13, 14 Strain gauge 15 Base 16 Strain member 18 Detection signal output Circuit 19 Abnormal bending judgment circuit 20 Alarm 23 Piezoelectric element 28 Obstacle nail 30 CPU
36 Launch Control Unit 37 Production Control Unit

Claims (6)

A strain sensor attached in the vicinity of the driving portion of the obstacle nail driven into the game board;
A bending detection means for applying a load with bending of the obstacle nail to cause distortion in the strain sensor, and outputting a bending detection signal based on an operation associated with the strain generation of the strain sensor;
An abnormal bend determination means for determining whether or not the obstacle nail is bent abnormally based on the bend detection signal output from the bend detection means;
An output means for outputting a determination result when the abnormal bending determination means determines an abnormal bending;
Equipped with a,
The abnormal bending determination means captures the distortion waveform signal output from the bending detection means for a predetermined time, converts the distortion waveform signal into a digital value, stores it as distortion waveform pattern data, and analyzes the distortion waveform pattern data. A pachinko gaming machine characterized by performing pattern recognition and determining whether or not an abnormal bending has occurred based on the pattern recognition . A strain sensor attached in the vicinity of the driving portion of the obstacle nail driven into the game board;
A bending detection means for applying a load with bending of the obstacle nail to cause distortion in the strain sensor , and outputting a bending detection signal based on an operation associated with the strain generation of the strain sensor;
An abnormal bend determination means for determining whether or not the obstacle nail is bent abnormally based on the bend detection signal output from the bend detection means;
An output means for outputting a determination result when the abnormal bending determination means determines an abnormal bending;
With
As the strain sensor, a load cell type strain gauge is attached in the vicinity of an obstacle nail driving portion of the game board, and a driving portion for driving the obstacle nail is formed as an obstacle nail attachment body, and an opening provided in the game board The obstacle nail attachment body is fitted into the portion, a strainable portion that is elastically deformable is provided in the vicinity of the obstacle nail driving portion of the obstacle nail attachment body, and the strain gauge is attached to the inside of the distortion portion. Characteristic pachinko machine. A strain sensor attached in the vicinity of the driving portion of the obstacle nail driven into the game board;
A bending detection means for applying a load with bending of the obstacle nail to cause distortion in the strain sensor, and outputting a bending detection signal based on an operation associated with the strain generation of the strain sensor;
An abnormal bend determination means for determining whether or not the obstacle nail is bent abnormally based on the bend detection signal output from the bend detection means;
An output means for outputting a determination result when the abnormal bending determination means determines an abnormal bending;
With
A piezoelectric element is used as the strain sensor attached to the bottom surface of the recess formed on the back surface of the game board, and when a load is applied along with the bending of the obstacle nail, a voltage signal is output from the piezoelectric element. It is output, wherein the to Rupa dick gaming machine outputting the voltage waveform signal as a detection signal of the bending said bending detecting means. 4. The pachinko gaming machine according to claim 1, further comprising an alarm generating means for generating an alarm when the abnormal bending determining means determines that an abnormal bend has occurred in the obstacle nail. 4. A pachinko gaming machine according to claim 1, further comprising launch stop control means for stopping the launch of a game ball when said abnormal bend determining means determines that an abnormal bend has occurred in the obstacle nail. . 4. The pachinko game according to claim 1, further comprising an illegal bending notifying means for notifying the occurrence of an abnormal bending when the abnormal bending determining means determines that an abnormal bending has occurred in the obstacle nail. Machine.