JP4134913B2 - Locking device - Google Patents

Description

  The present invention relates to a monitoring device and a locking device that monitor the generation of sound of a predetermined frequency at a predetermined location.

  Conventionally, as an example of a monitoring device, in order to detect unauthorized intrusion, many methods and methods for detecting sound waves or vibrations generated when glass is broken have been proposed and commercialized.

  For example, (1) a method for detecting vibrations that occur when glass breaks, and (2) a method for detecting high vibrations of 50 kHz to 100 kHz or more that occur when glass is broken with a contact-type sensor such as a piezoelectric sensor. .

  As a sensitivity switching type glass breakage sensor, as described later, a sensor that prevents false alarms caused by sounds at the time of printer printing or blind opening / closing of OA equipment is disclosed.

  This sensitivity-switching type glass breaking sensor has two sound collecting means for picking up ambient sounds, amplification means for amplifying the ambient sounds collected by the two sound collecting means, and two amplified ambient sounds. Comparing and analyzing means for performing comparative analysis, and alarm output means for giving an alarm only when the result of the comparative analysis indicates that the ambient sound is an impact sound at the time of glass breakage.

  Then, according to the signal from the means for detecting whether the user is present in the room where the sensor is installed, the sensitivity switching means switches to the sensitivity setting means for the presence time and the sensitivity setting means for the absence time, respectively. It is.

This makes it possible to reduce false alarms that were likely to occur with conventional glass breakage sensors by switching the practical sensitivity, and it will not reduce the monitoring distance range of the sensor, increasing labor and cost by increasing the number of sensors installed. There is an effect to suppress.
JP-A-7-65250 (paragraphs 0004 to 0008, FIGS. 1 and 2)

  However, the above-described method (1) has the disadvantage that it is necessary to install each glass sheet and that it operates even with vibrations struck by wind or balls. Further, in the case of the method (2), it is necessary to install every glass. Furthermore, there is a problem that the use of a highly directional microphone becomes expensive.

  In the method disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 7-65250, the user can set the sensitivity at the time of occupancy according to the signal from the means for detecting whether the occupant is present in the room where the sensor is installed. Since the sensitivity switching means switches to the means and absence sensitivity setting means, in order to switch the sensitivity depending on whether or not the user is in the room, if the user is not in the room, it still picks up sound other than the glass breaking sound and malfunctions It is possible to do.

  The present invention has been made paying attention to such a problem, and can be produced at a low cost, a monitoring method and a monitoring apparatus capable of detecting only a sound having a target frequency by defining a monitoring target region, and crime prevention. An object is to provide an apparatus.

The invention of claim 1 includes a receiving member provided on one glass door, a locking device main body having a dead bolt which is provided at the other glass door or door portion and can be advanced and retracted relative to the receiving member, and the glass door. A monitoring device for monitoring glass damage, the locking device body is locked by advancing the deadbolt by a locking signal and engaging the receiving member, and retracting the deadbolt by a release signal A locking device for unlocking,
The monitoring device includes a plurality of sound collecting elements for detecting sound from the glass portion to be monitored of the glass door, and a pulse output when the glass is broken based on signals output from the plurality of sound collecting elements. Analysis unit for detecting the rupture sound of a state, a counter circuit for counting the number of pulses of the destructive sound detected by the comparison analysis unit, and the count number of the counter circuit does not reach the predetermined count number within a predetermined time And an information output unit that maintains a sleep state when
When the counter circuit counts a predetermined number of pulses within a predetermined time, the information output unit is changed from a sleep state to an active state, and thereafter, when the predetermined number of pulses is counted within a predetermined time, the information output unit Outputs a signal indicating that glass breakage has occurred, and when the predetermined number of pulses is not counted, the information output unit again enters the sleep state .

According to the invention of claim 2, at least one of the opening and closing members that opens and closes the opening is provided, and the other is provided in one of the opening and closing devices that is either the opening or the other opening and closing member. A locking device main body having a movable locking member that can be moved in and out of the opening / closing operation region, and provided on the other side of the opening / closing device, the movable locking member protruding to one side of the opening / closing device is restrained to restrict the opening of the opening / closing device. A locking device comprising a fixing member,
A hole that is formed in the fixed member and locks when the movable locking member enters;
A protrusion that is movable in the advancing and retreating direction of the movable locking member and that can contact the edge of the hole as the movable locking member enters the hole;
A contact that is energized by contact between an edge of the hole of the fixing member and the protrusion;
A plurality of sound collecting elements arranged with a disposition interval below the wavelength of the frequency of the breaking sound of the glass part of the switchgear,
The monitoring target area is defined by the delay sum of the sounds detected by the plurality of sound collecting elements, and has information processing means for monitoring the generation of sound of a specific frequency,
The information processing means is in a sleeve state with low power consumption until the sound collecting element detects a glass breaking sound generated when the glass portion is damaged a predetermined number of times, and the sound collecting element detects the glass breaking sound a predetermined number of times. When the glass breakage sound is detected from the sleeve state to the active state where the monitoring operation can be performed and the glass breakage noise is detected a predetermined number of times within a predetermined time after the start of monitoring, the glass breakage occurs. The control for determining whether or not is started is started based on a detection signal from the contact .

  According to the first monitoring apparatus of the present application, it is possible to determine a free three-dimensional spatial position with respect to the sound monitoring target region of the sound collecting element by adjusting the arrangement interval. In addition, in order to detect a sound having a specific frequency in a narrow area, even if a sound having a specific frequency is generated outside the monitoring area, there is no possibility of generating a false alarm.

  In addition, when the glass is broken or when an ultrasonic wave peculiar to the glass is generated due to glass cutting or the like, this ultrasonic wave can be detected by the sound collecting element, so it was found that the glass door at a specific position was broken. Security devices such as alarms can be activated.

  In particular, when the glass breaking sound is not detected a predetermined number of times within a predetermined time, the information processing means is set to a sleep state, and when the glass breaking sound is detected a predetermined number of times within a predetermined time, the information processing means is set to an active state. Therefore, power supply to the information processing means can be suppressed, battery consumption can be suppressed, and the monitoring function can be maintained for a long time.

Hereinafter, a monitoring device and a locking device according to embodiments of the present invention will be described with reference to the drawings.
[Monitoring device]
As shown in FIG. 10, a plurality of omnidirectional microphones are arranged in a straight line to form a linear array. It is assumed that N elements are arranged on one side and N elements on the other side from the linear center O, and the number of microphone elements is 2N + 1. This number is an odd number here, but it may be an even number. Further, although the elements are arranged in a straight line, they may be arranged in a cross shape on a plane. The directivity pattern of the array in the case of a straight line has a wedge shape, and the directivity pattern of the array in the case of the latter cross has a three-dimensional shape with a wedge shape having a rectangular opening. Moreover, although the distance of each microphone shall be located in a line at equal intervals d, it does not need to stick to this and may be unequal intervals.

  It is assumed that a direction perpendicular to the x-axis direction in which the microphones are arranged is a z-axis, and a plane sound wave having an angle θ with respect to the z-axis is incident on the microphone. Let the frequency of this sound wave be f. When the electrical characteristics (for example, frequency characteristics) of the microphones are the same, a signal E obtained by adding up these output signals is:

  Given in.

  Here, k = ω / c, ω = 2πf is the angular frequency, c is the speed of sound, and is about 340 m / s in the air. In Equation (1), r is the distance from O to the plane wave sound source.

  W (n) is a weighting coefficient when weighting each microphone output. Here, all microphones are not weighted and W = 1.

  Therefore, equation (1) is

It can be calculated as follows. Here, x = (kd / 2) sin θ. Since the directivity function D _{2N + 1} (θ) of the microphone is normally normalized to 1 as the maximum value,

Is displayed.

  For example, when N = 1, that is, when three microphones are used,

  N = 2, that is, when 5 microphones are used,

Get.

  FIG. 11 shows the directivity when f = 30 kHz and d = 9 mm. The case where the thick line is 3 elements and the thin line is 5 elements. From this result, the directivity of the five elements with a larger number is sharper. This is because the length of the microphone array is increased from 18 mm to 36 mm. In addition, the side lobe becomes lower as the number of elements increases. Increasing the number of elements can sharpen directivity and suppress side lobes. However, since the entire array becomes a large aperture, it is not very advantageous to increase the number of elements in the entire system. It is preferable to consider the size of the element spacing d.

  In directivity, the angle at which the amplitude is halved is called the directivity angle. When this angle is θh, in case of 3 elements

It becomes. Since kd >> 1 in the ultrasonic region,

Is approximated by For example, when f = 30 kHz and d = 9 mm, θh = 0.26 rad = 15 °. This value agrees with the calculation result of FIG. When the distance from the sound source to the microphone array is R, and the distance is sufficiently larger than the length of the microphone array, the area covered by the directivity angle θh is

Will be given. When the above example is adopted, a = 52 cm when R = 2 m. That is, it is possible to pick up a sound source signal in the region of + −52 cm with the direction of θ = 0 as the center. The target area a becomes narrower as the ultrasonic frequency f becomes higher and the element interval d becomes larger.
[Experimental example]
Next, the result of trial manufacture of an array using an electret condenser microphone (hereinafter abbreviated as ECM) is shown. The above ECM is, for example, WM-64AT manufactured by Matsushita Electric Industrial Co., Ltd., and the outer shape is 6 mm. This ECM itself is known to exhibit characteristics close to omnidirectionality. Here, a horizontal ECM array in which three ECMs are arranged horizontally is configured. Each interval of the ECM is set to 9 mm. The output signal of each ECM is added and input to an operational amplifier, and the signal is amplified 20 / 3.3≈6 times.

  A sound source (Tweeter, Pioneer PT-R9) that can radiate up to the ultrasonic frequency band is set at a height of 1 m from the floor, and an ECM array is set at a horizontal distance of 2 m from the sound source at a height of 1 m from the floor. , 15 burst waves are emitted from the sound source. There are three frequencies, 25 kHz, 30 kHz, and 40 kHz. The directivity was measured while rotating the microphone array around the vertical axis.

  The measurement results are shown in FIG. 12A in the upper left is 25 kHz, FIG. 12B in the upper right is 30 kHz, FIG. 12C in the lower left is 40 kHz, and FIG. 12D in the lower right shows the directivity of 25 kHz and 40 kHz. This is the multiplied data. In the directivity for each frequency, the side lobe is large as a whole, and this is similar in tendency to the theoretical result shown in FIG.

  Here, the theory and experimental results are compared quantitatively. For example, when comparing data at f = 30 kHz, θh = 15 ° in the theory of FIG. On the other hand, in the experiment, the angle is 13 ° from FIG. Although the experimental results are somewhat narrower, they are almost consistent with the theory.

  In this way, a directional microphone can be configured by arranging several non-directional microphones side by side to form a horizontal array. In the theoretical result of FIG. 11 and the experimental result of FIG. 12, the side lobe is relatively large. A large side lobe level increases the probability of picking up sounds other than the target sound source, but a desired sound source signal can be extracted by reducing the side lobe level as much as possible. Extracting such a desired sound source signal can be solved by weighting the output signals of the individual microphone elements. However, the directivity generally increases when weights are added. FIG. 13 shows typical directivity patterns when various weights are applied.

  As described above, in this monitoring apparatus, a plurality of sound collecting elements are arranged in a straight line or a plane so as to have an arrangement interval equal to or smaller than the wavelength of the frequency of the sound to be monitored. The sound collection element is a microphone, and the microphones are arranged in a straight line or a plane to form a microphone array. The interval between the individual microphones should be less than the wavelength of the frequency of the sound to be monitored.

  The sound to be monitored is a sound having a specific frequency to be detected. Arranging a plurality of microphones in a straight line or a plane provides a time delay in the detection time of sound generated in the monitoring target area, and determines the direction of the monitoring target area based on this time delay. It is. That is, by setting the arrangement interval to be equal to or less than the wavelength of the sound frequency to be monitored, a time lag (delay) occurs at the time when each microphone detects a wave of one wavelength having the same shape. Since the sound detected by each microphone has almost the same waveform, even if there is a phase shift in the sound detected by each microphone, the phases of the detected sound waves are aligned and summed to obtain a specific target signal. Can emphasize frequency sound. In addition, a monitoring target area extending in a predetermined direction from the microphone array can be determined based on the sum of detection values of the microphones, and generation of sound of a specific frequency in the monitoring target area can be monitored.

According to this monitoring apparatus, a plurality of sound collecting elements are arranged at an arrangement interval equal to or smaller than the wavelength of the sound frequency, and the monitoring target region is defined by emphasizing the directivity of sound detection by the delay sum of the detected sound outputs. Therefore, by adjusting the arrangement interval, it is possible to determine a free three-dimensional spatial position with respect to the sound monitoring target area of the sound collecting element, and to detect sound of a specific frequency in a narrow area. Even if a sound of a specific frequency is generated outside the area, there is no risk of false alarms.
[Locking device]
Next, the example which provided the above-mentioned monitoring apparatus in the locking device is demonstrated based on drawing.

  FIG. 1 is a plan view showing the main configuration of the locking device according to this embodiment. FIG. 2 is a diagram showing a side configuration of the locking device, and FIG. 3 is a perspective view showing a state in which the locking device is applied to a slide-type sash door as an opening / closing member.

  In the present embodiment, as an example of an opening / closing device in which at least one is a door (opening / closing member) that opens and closes a window (opening) and the other is either a door or a doorway, Although the sash doors 1L and 1R will be described as examples, the locking device can be applied to hinge doors, showcase doors, locker doors, desk drawers, and the like.

  In FIG. 3, the open / close operation region of the sliding sash doors 1L and 1R is the longitudinal direction of the rails 2 and 2, and the sliding direction of the sash doors 1L and 1R. Of course, in the case of a hinge door, it is the direction of rotation of the hinge door. A crescent lock Cr is provided in the vicinity of the center portion of the vertical shaft of the sash doors 1L, 1R, and the locking device 3 is an auxiliary lock of the crescent lock Cr, and is located above the sash doors 1L, 1R. It is attached.

  The locking device 3 includes a locking device body 4, a receiving member 5, and a cover case Cc. Furthermore, as shown in FIGS. 1 and 3, the locking device body 4 includes a base plate 6, a first support plate portion 7, a dead bolt 8, a drive mechanism 10, a monitoring device D, and a battery (not shown). The cover case Cc is provided with a release button B for connecting and disconnecting the battery and the control device main body 4.

  The base plate 6 includes mounting holes 6A at both upper and lower ends for screwing to the vertical flange 1A of the sash door 1R. The mounting hole 6A is a long hole extending in the orthogonal direction of the vertical flange portion 1A in order to adjust the position of the base plate 6 in the horizontal direction, and can be adjusted in an inclined state.

  A first support plate portion 7 is attached to the base plate 6 with bolts 7B. The first support plate portion 7 holds the dead bolt 8 slidably, and a pair of opposing vertical plate portions 7A and a bottom plate portion form a U-shaped cross-sectional shape of the first support plate portion 7. ing. A pair of opposing vertical plate portions 7A of the first support plate portion 7 includes an opening 8A that holds the dead bolt 8 so as to be slidable. The opening 8A has a shape capable of sliding a second protrusion 12B described later.

  The receiving member 5 (restraining member) is attached to the glass G of the sash door 1 by a known means such as a double-sided adhesive tape or a screw, and has a locking projection 5B for restricting the movement of the flat plate portion 5A and the dead bolt 8. The locking projection 5B protrudes in a substantially L shape at the end of the flat plate portion 5A. The locking projection 5B of the receiving member 5 double-locks the sash doors 1L and 1R in addition to the crescent lock Cr when the dead bolt 8 comes into contact with the locking projection 5B and the corner portion of the flat plate portion 5A. . The restraining member 5 has an L-shaped cross section having a small locking projection 5B. However, when the restraining member 5 is attached to the hinge door, the restraining member 5 is formed so as to stand up from the hinge door, and the restraining portion (for example, A keyhole, a concave portion, and a stepped portion may be formed, and the dead bolt 8 may be passed through and restrained in this restraining portion (for example, in the case of a keyhole). When the restraining portion is a recess or a stepped portion, the outer peripheral portion of the tip of the dead bolt 8 is brought into contact with the vertical wall surface of the recess or the stepped portion and restrained.

  The dead bolt 8 can be moved in and out of an opening / closing operation area which is a sliding area of the sash doors 1L and 1R, and abuts against the flat plate portion 5A in the vicinity of the locking projection 5B of the receiving member 5 to lock the pair of sash doors 1L and 1R. .

  The dead bolt 8 is made of a metal having a groove-like cross-sectional shape (for example, a steel plate, a steel bar, etc.). As shown in FIG. 1, a holder case 11 and a contact 12 that move together with the dead bolt 8 are provided inside the groove. keeping. A metal holder case 11 having a U-shaped cross section is mounted in the groove of the dead bolt 8, and a contact 12 is held in the holder case 11 so as to be slidable in the longitudinal direction of the holder case 11. A groove 8C that allows the holder case 11 to slide is formed at the end of the dead bolt 8 (see FIG. 6).

  4 and 5 show the contact 12. In this embodiment, the contact 12 is made of plastic. The contact 12 has a first protrusion 12A for contacting the flat plate portion 5A of the receiving member 5 and a second protrusion for contacting the locking protrusion 5B. A protrusion 12B is formed. The contact 12 has a first contact 13 that outputs a signal when the first protrusion 12A comes into contact with the receiving member 5 or the glass G, and a signal when the second protrusion 12B comes into contact with the locking protrusion 5B. And a second contact 14 for outputting.

  The error sensor includes the first protrusion 12A, the first contact 13, and a conduction protrusion 28A described later. The locking sensor includes the second protrusion 12B, the second contact 14, and a conduction protrusion 28B described later.

  A coil spring 19 is compressed and disposed between the concave portion 17 of the contact 12 and the upright plate portion 18 of the bottom portion 11 </ b> A of the holder case 11. The contact 12 is biased by a coil spring 19 so as to protrude toward the sash door 1 side.

  A stopper 20 is formed at the tip of the contact 12, and the stopper 20 can move within the opening 21 of the holder case 11. An upright plate portion 22 is formed at the inner edge of the opening 12, and the upright plate portion 22 can regulate the return of the stopper 20.

  As shown in FIGS. 6 and 7, the end of the contact 12 on the sash door 1 side is a first protrusion 12A, and the second protrusion 12B protrudes from the corner of the first protrusion 12A. Has been. The second protruding portion 12B protrudes from the upper surface portion 12C of the contact 12. The second projecting portion 12B can pass through the opening 8A of the first support plate portion 7 as described above.

  The distance between the first protrusion 12A and the second protrusion 12B is set to such a depth that the first protrusion 12A can be embedded in the holder case 11 when the second protrusion 12B is pressed by the locking protrusion 5B. ing.

  That is, when the second projection 12B is pushed by the locking projection 5B, it is possible to detect that the dead bolt 8 is positioned at the corner of the locking projection 5B and the flat plate portion 5A and is properly locked. Even if the dead bolt 8 advances to the sash door 1L side, the amount of protrusion is insufficient, or because the sash doors 1L, 1R overlap and there is only a space in the protruding direction of the dead bolt 8, If the first protrusion 12A does not hit the sash door 1L or hits the glass G or the flat plate 5A, an error occurs. Also, in the case of a hinge door instead of a sash door, if the hinge door is open, the receiving member will be disengaged from the projecting area of the dead bolt 8. Become. An error also occurs in this “idle” state.

  The first contact 13 and the second contact 14 are provided on the side surface of the contact 12. The first contact 13 and the second contact 14 are connected to a microcomputer 24 as a control device via lead wires 23A and 23B. The first contact 13 and the second contact 14 are attached to flexible tongues 26 </ b> A and 26 </ b> B that are axially fixed inside recesses 25 </ b> A and 25 </ b> B provided on the side surfaces of the contact 12.

  A coil spring 27 is disposed between the free ends of the flexible tongues 26A and 26B. The free ends of the flexible tongues 26 </ b> A and 26 </ b> B are biased toward the side wall 11 </ b> B of the holder case 11. The conduction contacts 22A and 22B are located slightly inside the side surface of the contact 12, and are normally held so as not to conduct with the holder case 11.

  On the side wall portion 11B of the holder case 11, conductive protrusions 28A and 28B protrude toward the inside of the U-shaped cross section. Depending on the sliding position of the contact 12, the conduction protrusions 28 </ b> A and 28 </ b> B are brought into contact with one or both of the first contact 13 and the second contact 14 to be conducted.

  The conductive protrusions 28A and 28B are formed at a distance in the longitudinal direction of the holder case 11 so that the locking sensor is conductive after a predetermined time when the error sensor is conductive, and the first protrusion protruding from the holder case 11 is provided. The protruding amount of the portion 12A and the distance of the step from the first protruding portion 12A to the second protruding portion 12B are opened.

  That is, when nothing hits the dead bolt 8, the first protrusion 12A protrudes from the end of the holder case 11, and at this time, the conductive protrusion 28A does not contact the first contact 13, but the dead bolt When 8 hits the glass G or the flat plate portion 5 </ b> A of the receiving member 5, the first protrusion 12 </ b> A moves backward to the same position as the end of the holder case 11. At this time, the conductive protrusion 28 </ b> A is brought into contact with the first contact 13.

  When the dead bolt 8 hits the receiving member 5 and the second protrusion 12B of the contact 12 is in contact with the locking protrusion 5B, the first protrusion 12A is retracted into the holder case 11 and the conductive protrusion 28A is the first. The conductive protrusion 28 </ b> B is brought into contact with the second contact 14 while being brought into contact with the contact 13.

  In order to form a time lag for conduction during this period, the installation positions of the conduction protrusions 28A and 28B are determined.

  The holder case 11 can be electrically connected to the dead bolt 8 and is grounded. The microcomputer 24 is supplied with driving power from the battery in response to a locking command from the central locking device, and detects a conduction state by contact between the first contact 13 and the second contact 14 and the conduction protrusions 28A and 28B.

The first contact 13 the microcomputer 24, H of the voltage of the second contact 14 or the contact 12 is hitting the first protrusion 12A by L, it is determined whether the hit the second protrusion 12 B. If the first projecting portion 12A does not contact the receiving member 5, an error occurs, and if the first projecting portion 12A contacts the glass G or the flat plate portion 5A of the sash door 1, an error also occurs. When the second projection 12B hits the locking projection 5B after the first projection 12A hits the flat plate portion 5A, the microcomputer 24 determines that the locking is normally performed.

Further, for example, when the receiving member 5 is provided with only the holes through which the first projecting portion 12A and the dead bolt 8 can enter , the second projecting portion 12B although the first projecting portion 12A is not in contact with anything. Is in a state of hitting the locking projection 5B. In this case, when the dead bolt 8 and the first projecting portion 12A enter the hole portion and the second projecting portion 12B comes into contact with the edge of the hole, the first contact 13 is first energized, and the dead bolt 8 is further at the tip of the hole. In order to proceed, the second contact 14 is also energized, resulting in a time difference between the energization of the first contact 13 and the second contact 14, and the microcomputer 24 is normally locked based on the energization of both. to decide. Based on the power-off of the release button B, the microcomputer 24 reverses the motor 30 to release the locked state and stops.
[Drive mechanism]
The drive mechanism 10 pushes out the dead bolt 8 so as to protrude into an opening / closing operation region where the sash doors 1L and 1R slide, and includes a motor 30 as a drive source, a gear mechanism, a link lever 32, and an urging means. As a string spring 34.

  The motor 30 is a DC motor and is attached to a base 31 fixed to the surface of the base plate 6. The base 31 is fixed to the base plate 6 with, for example, an adhesive or a bolt. The motor 30 is controlled by instructions from the microcomputer 24. The microcomputer 24 drives the motor 30 in accordance with a locking command from the central locking device. The procedure for the microcomputer 24 to control the motor 30 will be described later.

  When detecting the locked state based on the state of the various sensors described above or outputting an error alarm, the locking device is provided with a locking completion LED and an error alarm LED, and lights up in accordance with the state.

  The microcomputer 24 is connected to the central locking device via a wireless communication device (mobile phone, PHS phone, wireless LAN card, low power wireless module, etc.) (not shown), and locked by a command from the central locking device. The lock state may be displayed on the display panel or the lock may be released.

  The base 31 has support plate portions 35A and 35B for supporting the gear mechanism. A shaft 36 is fixed to the support plate portion 35A. A gear 37 is held on the shaft 36 by a rotating material. The gear 37 is formed by integrally forming a small-diameter gear 37A and a large-diameter gear 37B in two stages, and a gear 38 attached to the output shaft of the motor 30 meshes with the large-diameter gear.

  A shaft 39 is rotatably attached between the support plate portions 35A and 35B. A gear 40 is fixed to an end portion of the shaft 39, and a worm gear 41 is fixed to an intermediate portion of the shaft 39. 39A and 39B are rings for preventing the axial displacement of the shaft 39, and 41A and 41B are rings for preventing the axial displacement of the worm gear 41.

  A gear 42 for driving the link lever 32 is engaged with the worm gear 41. The gear 42 is rotatably supported on the fixed shaft 43. A step portion 43 </ b> A is formed at the base portion of the fixed shaft 43, and the step portion 43 </ b> A contacts the base 31. A bolt (not shown) is screwed into the center of the base portion of the fixed shaft 43, and the fixed shaft 43 is fixed to the base 31.

  A fixed shaft 43 is passed through a ring 44 formed integrally with the link lever 32, and the ring 44 is rotatable with respect to the fixed shaft 43. A string-wound spring 34 is disposed on the link lever 32. The string spring 34 is passed through the fixed shaft 43 and is rotatable around the fixed shaft 43. One end of the string spring 34 is hooked into a hole 32A on one end of the link lever 32, and the other end of the string spring 34 is on a protrusion 44A of the spacer section 44 formed on the back surface of the gear 42. It is hung.

  The string spring 34 is provided at a portion that transmits the movement of the drive mechanism 10 to the dead bolt 8. The drive mechanism 10 moves the dead bolt 8 toward the receiving member 5, and the dead bolt 8 contacts the receiving member 5. Then, the driving force can be accumulated against the resistance force, and the dead bolt 8 is further urged and pressed against the receiving member 5 side to eliminate the gap expansion between the sash doors 1L and 1R. Even when the space between the dead bolt 8 and the receiving member 5 becomes narrow, the portion narrowed by the urging force is absorbed. In this way, even if the gap is large or small, it can be dealt with by the urging force of the urging means.

  The biasing means is constituted by the string spring 34, but may be other means, for example, an elastic body such as a coil spring, a leaf spring, or rubber.

  The spacer portion 44 is integrally fixed to the gear 42, and the string spring 34 is rotated with the rotation of the gear 42. The rotation of the string spring 34 is transmitted to the link lever 32, and the link lever 32 pushes out the dead bolt 8.

  A shaft 32B is provided at one end of the link lever 32 so as to protrude, and this shaft 32B is movably fitted into the long hole 8B of the dead bolt 8. The other end of the link lever 32 is formed with a stopper portion 32C that protrudes toward the base 31 side. The stopper 32C presses the contact piece HP1 of the home position sensor HP to turn on the home position sensor HP. The base 31 is provided with a stopper portion 45 that supports the link lever 32 when the stopper portion 32C hits the home position sensor HP. The home position sensor HP is connected to the microcomputer 24 via a lead wire (not shown).

  A control device that controls a motor 30 that is a drive source of the drive mechanism 10 includes a microcomputer 24 disposed on a base 31. In the microcomputer 24, after the first bolt 12A hits the flat plate 5A after the dead bolt 8 moves toward the receiving member 5, the second protrusion 12B constituting a part of the lock sensor is locked. When it hits the protrusion 5B, it is determined that it is normally locked.

The microcomputer 24 has a function of accumulating the biasing force in the string spring 34 that is a biasing means by pressing the dead bolt 8 against the member 5 for a predetermined time after the second projection 12B hits the locking projection 5B to detect the locking. Have. A monitoring device D is connected to the microcomputer 24.
[Monitoring device]
The monitoring device D is attached on the base plate 6 in the case of the locking device 3. The monitoring device D has a plurality of microphones and processing means. The arrangement interval of the plurality of microphones is set to be equal to or less than the wavelength of the frequency of the sound (glass breaking sound here) applied to the monitoring target. The processing means determines the monitoring target area by the delay sum of the sounds detected by the plurality of microphones, and monitors the generation of the glass breaking sound having a specific frequency to be monitored.

  FIG. 9 is a block diagram of the monitoring device D. As shown in FIG. 9, the monitoring device D includes a microphone array unit 50 in which a plurality of omnidirectional microphones are arranged in parallel, an addition unit 51, an amplification unit 52, a signal processing unit 53, and a comparative analysis unit 54. And a counter circuit CT and an information output unit 55 (information processing means).

  The processing means for detecting the above-described glass breaking sound a predetermined number of times within a predetermined time includes an adding unit 51, an amplifying unit 52, a signal processing unit 53, a comparative analysis unit 54, a counter circuit CT, and an information output unit 55. In this embodiment, a speaker 56 is provided.

  In order to obtain directivity, the microphone array unit 50 is formed by arranging a plurality of small piezoelectric microphones in a linear or planar manner in a direction intersecting with the glass part near the crescent lock Cr. Here, if the electret microphones are arranged in a straight line, it is possible to pick up sounds in a wide frequency band from the audible band to the ultrasonic range from approximately 40 kHz, but this is not necessary if you want to extract only the sound of a specific frequency component. If sound in a wide band is mixed, malfunction may occur. For example, it is desirable to exclude life sounds as unnecessary sounds from the viewpoint of detecting the destruction of glass sound. Such unnecessary sounds can be generally removed by a filter, but there are disadvantages that the circuit configuration becomes complicated and the power consumption increases.

  Therefore, in this embodiment, instead of the wide-band electret microphone, an ultrasonic microphone is used by using a bimorph piezoelectric microphone that extracts a sound around 30 kHz with high sensitivity. The diameter of this piezoelectric microphone is approximately 10 mm, and three microphone arrays are arranged on a straight line to form the microphone array unit 50. The outputs of the three piezoelectric microphones are connected in series and amplified approximately 15 times, and connected to a high-pass filter (wide-pass filter) having a cutoff frequency of 15 kHz and 12 DB / 0 ct as the output of the microphone.

  In order to obtain directivity, the microphone array unit 50 includes a plurality of the above-described piezoelectric microphones arranged in a line or a plane, and weights the output signals of the microphones in order to improve directivity. Alternatively, a simple filter may be attached to remove unnecessary low frequency or high frequency external noise. In order to obtain a desired directivity angle in the present sensor, for example, in the case of three microphone elements, the distance d between the individual microphones can be finely adjusted according to the equation (7).

  The adding unit 51 is a unit that adds the output signals of the microphones. Here, by setting an appropriate delay time for each microphone element, it is possible to direct only the directional main lobe in an arbitrary direction (mainly the sound generation direction) without moving the microphone array unit 50.

  FIG. 14 is a graph showing the directivity when a microphone array unit 50 of an ultrasonic microphone is configured using a bimorph piezoelectric microphone. The horizontal axis indicates the angle in the left-right direction with the directivity center of the microphone array unit 50 being 0 °, and the vertical axis indicates the sensitivity.

  The amplifying unit 52 is a unit that amplifies a minute electric signal to an appropriate level with low noise.

  The signal processing unit 53 is a processing circuit unit that extracts only a signal peculiar to the sound by filtering the signal in accordance with the frequency characteristic of the generated sound (specifically, the glass breaking sound). By using a filter bank, a microphone array sensor with a sharper directivity can be obtained by taking out not only a one-round fraction component but also a plurality of frequency components and multiplying them.

  The comparison analysis unit 54 includes a comparator and compares signals. The comparative analysis unit 54 determines whether the sound source is a desired glass breaking sound.

  The counter circuit CT has a function of counting the number of glass breaking sound pulses and determining whether or not there is a predetermined number of glass breaking sound pulses within a predetermined time. In many cases, the breaking sound of the glass is generated several times continuously as a pulse. Accordingly, the first pulse is input to the microphone array unit 50 and output from the comparison / analysis unit 54 to the counter circuit CT. When the counter circuit CT detects the pulse, the counter circuit CT sets the information output unit 55 in the low power consumption state ( The information output unit 55 is set in the standby state by immediately changing from the sleep state) to the normal power consumption state (active state).

  Subsequently, when the number of pulses further exceeds a predetermined number of times (for example, once or twice) within a predetermined time (for example, variable from several seconds to several tens of seconds), the counter circuit CT considers that the glass has been broken. The signal is sent to the information output unit 55 and the microcomputer 24. On the other hand, when the pulse is not input even after the time is exceeded, the first pulse is processed as an error signal, the standby state of the information output unit 55 is canceled, the power supply to the information output unit 55 is stopped, and the information output The unit 55 changes from active to sleep.

  The information output unit 55 is an analog and digital signal output unit that receives a signal that the glass is broken from the counter circuit CT and immediately provides information to the surrounding that the glass has been performed. Normally, power is not supplied to the circuit constituting the information output unit 55, but the microphone array unit 50 detects a destructive pulse sound more than a predetermined number of times (for example, twice in this example) within a predetermined time, Only when the counter circuit CT obtains the pulse signal of the glass breaking sound, power is supplied from the battery to the information output unit 55 by the counter circuit CT, and the information output unit 55 operates assuming that the glass is completely broken.

  In this embodiment, the information output unit 55 and the microcomputer 24 are provided separately. However, the information output unit 55 may be configured by the processing function of the microcomputer 24.

  In this embodiment, only the information output unit 55 is set in the sleep state, but the information output unit 55 and the microcomputer 34 may be set in the sleep state. However, when the information output unit 55 and the microcomputer 24 are changed from the sleep state to the active state, not only the glass breaking sound but also the locking command and the unlocking command are received from the wireless communication device 57, or the locking device body When the warning cancel command 4 is received, the sleep state is changed to the active state.

  The speaker 56 may be connected to the microcomputer 24 via an interface including a DA converter and an amplifier. When the speaker 56 is connected to the microcomputer 24, the program of the microcomputer 24 is programmed to generate an alarm sound from the speaker 56 when a glass breaking signal is output from the information output unit 55 to the microcomputer 24. The

The monitoring device D may be provided outside the case of the locking device 3 or may be provided independently from the locking device 3. If it is provided inside the locking device 3, it does not take time and effort to adjust the position of the monitoring device D for setting the monitoring area of the monitoring device D. It is easy to report and contact the company or landlord. When provided independently from the locking device 3, the monitoring area can be arbitrarily determined, so that the installation position can be installed on any wall surface or space in the room.
[Operation]
Next, a series of operations for locking will be described with reference to the timing chart of FIG. This timing chart shows the state when it is normally locked.

  First, when a locking command is received from the centralized locking device of the building, the motor 30 rotates forward to rotate the worm gear 41 via the gears 38, 37B, 37A, 40, and rotate the gear 42. The string spring 34 is rotated by the rotation of the gear 42 so that the link lever 32 is separated from the home position, and the home position sensor HP becomes L with a little time.

  When the forward rotation of the motor 30 is continued, the link lever 32 pushes the dead bolt 8 to the member 5 side. When the first protrusion 12A of the dead bolt 8 hits the flat plate part 5A of the receiving member 5, the conductive protrusion 28A comes into contact with the first contact 13 constituting the error sensor, and the first contact 13 and the conductive protrusion 28A are electrically connected. . After a lapse of a predetermined time (a time difference resulting from the height at which the metal fitting 5 protrudes from the glass G) after the first contact 13 and the conductive protrusion 28A are conducted, the conductive protrusion 28B is connected to the second contact 14 constituting the locking sensor. And the second contact 14 and the conductive protrusion 28B are conducted.

  After a lapse of a predetermined time after the logical product of the conduction (H) between the first contact 13 and the conduction protrusion 28A and the conduction (H) between the second contact 14 and the conduction protrusion 28B becomes (H). The power supply to the first contact 13 and the conductive protrusion 28A and the power supply to the second contact 14 and the conductive protrusion 28B are stopped. Further, after the logical product of the continuity (H) between the first contact 13 and the conductive protrusion 28A and the continuity (H) between the second contact 14 and the conductive protrusion 28B becomes (H), a predetermined time (a string spring) 34) The motor 30 is rotated in the normal direction.

  When the pushing force of the dead bolt 8 is sufficiently accumulated in the string spring 34, the motor 30 is stopped. Thereby, the locked state is maintained.

  When the unlocking command is output from the above-described central locking device, the motor 30 is rotated in the reverse direction, the home position sensor HP is turned on (H), and the home position sensor HP is turned on for a while until a stable stable state is reached. Then, the motor 30 is stopped.

  In the case of an error, the first contact 13 and the conductive protrusion 28A constituting the error sensor are not in contact with each other, or even if the second contact 14 and the conductive protrusion 28A are in contact with each other, the second contact 14 and the conductive protrusion 28B are not connected. It will not be in contact.

  In the case of this error, the wireless communication device 57 transmits an error message to the central locking device, and the central locking device outputs the error by sound, radio, and display device.

  The monitoring device D described above enters the sleep state so that the monitoring operation can be started by detecting the glass breaking sound immediately after the dead bolt 8 enters the locked state and the microcomputer 24 determines that the locking is normal. . Even in the sleep state, the microphone array unit 50 of the monitoring device D monitors the glass breaking sound in the vicinity of the crescent lock Cr, and the monitoring device D monitors by the monitoring release command of the wireless communication device 57 and the locking device body 4. To stop. When the microcomputer 24 receives a lock release command from the central locking device or when the release button B is pressed, the monitoring state is released, and the motor 30 is rotated in the reverse direction to release the dead bolt 8 from the locked state. Is done.

Note that the wireless communication device that receives and locks the wireless locking command signal from the central locking device can include a transceiver, a network card, a wireless transceiver, and the like.
[effect]
As described above, the monitoring device D according to this embodiment sets the microphone array unit 50 by arranging a plurality of microphones (sound collecting elements) with the arrangement interval d set equal to or less than the wavelength of the glass breaking sound frequency to be monitored. The microphone array unit 50 (sound collecting elements), an adder unit 51 for obtaining a delay sum of sounds detected by the microphone array unit 50, an amplifier unit 52, a signal processing unit 53, and a counter circuit CT. The information output unit 55 constitutes processing means for monitoring the generation of a sound having a specific frequency that the glass breaking sound has.

  The frequency of the sound monitored by the microphone array unit 50 corresponds to the frequency of the glass breaking sound generated when the glass is damaged. When the microphone array unit 50 detects the glass breaking sound a predetermined number of times, the information output unit 55 Is started from the low power consumption state, and the information output unit 55 determines that the glass breakage has occurred when the glass breaking sound is further detected a predetermined number of times within a predetermined time after the start-up.

  In addition, this locking device fixes the locking device main body 4 to either one of an opening for installing a sliding sash door or a hinge window and an opening / closing member of the sash door or the hinge window. The receiving member 5 is fixed to either one of the opening / closing members. The locking device main body 4 restrains the dead bolt 8 on the receiving member 5 to inhibit the opening and closing member from being opened, and monitors the vicinity of the locking device main body 4 or the crescent lock Cr of the glass G of the sash door 1L. In addition, a monitoring device D is provided.

  The monitoring device D changes the information output unit 55 (information processing means) from the sleep state (low power consumption state) to the active state when detecting the glass breaking sound generated when the glass is broken a predetermined number of times. The output unit 55 has a function of determining that glass breakage has occurred when the glass breakage sound is further detected a predetermined number of times within a predetermined time after detection of the glass breakage sound.

  As a result, it is not necessary for the monitoring device D to keep the information output unit 55 active at all times in the monitoring state, so that the power consumption is small and the monitoring function can be maintained for a long period of time.

  Further, by adjusting the arrangement interval of the microphones, it is possible to determine the monitoring target region of the microphones at an arbitrary position in a free three-dimensional space. In addition, since a sound having a specific frequency is detected in a narrow monitoring target region, even if a sound having the specific frequency is generated outside the monitoring target region, there is no possibility of generating a false alarm. Furthermore, the frequency of the sound to be monitored is an ultrasonic wave emitted when the glass is damaged, and power is not supplied normally, and glass breakage occurs only when glass breaking sound is detected multiple times within a predetermined time. Since the power supply is made based on the judgment, it is possible to reduce the power consumption of the battery as much as possible when monitoring the situation of breaking through the glass and entering.

  Further, the locking device is provided on the base plate 6 provided on the sash door 1R, the base plate 6 and provided on the base plate 6 and the dead bolt 8 that can enter and exit the opening / closing operation area of the sash doors 1L and 1R. A drive mechanism 10 for pushing out the bolt 8 so as to protrude into the opening / closing operation area of the sash doors 1L, 1R, and a dead bolt 8 provided on the other side of the sash door 1L and protruding by the drive mechanism 10 to receive the sash door 1L In the locking device 3 including the receiving member 5 that restricts the opening of 1R, when the dead bolt 8 contacts the receiving member 5 in the drive mechanism 10, the dead bolt 8 is further urged toward the receiving member 5 side. Since the string spring 34 is provided, when the dead bolt 8 locks the sash doors 1L and 1R with the receiving member 5, even if the closed sash doors 1L and 1R are separated, the string winding bar 34 because (urging member) is pushed out to the receiving member 5 side deadbolt 8 is prevented from forcibly would be unlocked.

  Further, even when the space between the sash doors 1L and 1R becomes narrow for some reason, it is possible to absorb the narrowed portion due to the urging force of the urging means.

  Moreover, the locking device 4 can detect the propriety of locking by a locking sensor. In addition, a locking error can be detected by the error sensor. When the deadbolt 8 includes a locking sensor and an error sensor, it is possible to accurately and easily detect the appropriateness of locking with the movement of the deadbolt 8. Furthermore, it is possible to detect the propriety of locking and to make the drive mechanism 10 for driving the dead bolt 8 simple, thereby improving the durability and reducing the cost.

  In particular, by providing a monitoring device D at a position where the glass portion near the crescent lock Cr of the sash door can be monitored, when the glass G is damaged, an alarm sound is generated and notification / communication to the security facility is performed. Processing such as taking an image can be performed. Moreover, you may provide the crime prevention function of not only generating an alarm and a report, but spraying a coloring material etc. or operating the apparatus which captures the person who is going to enter.

  By installing a monitoring device at a position where the glass portion near the crescent lock of the door that opens and closes the opening of the building can be monitored, when the glass is damaged, an alarm sound is generated and notification and communication to the security facility are performed. The camera performs processing such as taking an image, and minimizes battery consumption during monitoring and maintains the monitoring time for a long period of time.

The top view which shows the structure of the locking device main body concerning embodiment of this invention. The side view of the locking device main body of this invention. The perspective view which shows the state which earth | grounds a locking device to the sash door as an opening / closing apparatus. The figure which shows the cross-sectional structure of the contact of a locking device. Sectional drawing which shows the arrangement | positioning state of the conduction contact of a contactor and a holder case, and a conduction | electrical_connection projection part. The perspective view which shows the attachment state of a dead bolt, a holder case, and a contactor. (A) is a state in which the deadbolt is not hitting the glass, (b) is a state in which the deadbolt is hitting the receiving member and is in error, and (c) is a normal locked state in which the contact of the deadbolt hits the locking projection. (D) is a state diagram when an error occurs when the dead bolt hits the glass. The timing chart of the locking device of this Embodiment. The block diagram of the monitoring apparatus concerning embodiment of this invention. The conceptual diagram of the monitoring method concerning embodiment of this invention. The figure which shows the directivity of a microphone array. The pattern diagram of the directivity of a microphone array. Pattern diagram of directivity when weighted. The graph which shows the directivity at the time of comprising the microphone array part of an ultrasonic microphone using the bimorph type piezoelectric microphone. The signal processing figure which shows the glass detection of a microphone array part, and generation | occurrence | production of the warning sound of a monitoring apparatus.

Explanation of symbols

1L, 1R sash door (opening and closing device)
DESCRIPTION OF SYMBOLS 3 Locking device 4 Locking device main body 5 Receiving member 8 Dead bolt 10 Drive mechanism 12B 2nd protrusion part (locking sensor)
14 Second contact (locking sensor)
28B Conductive protrusion (locking sensor)
12A First protrusion (Error sensor)
13 First contact (error sensor)
28A Conductive protrusion (error sensor)
24 Microcomputer 32 Link lever 34 String winding spring (biasing means)
Cr Crescent lock B Release button D Monitoring device 50 Microphone array section 51 Addition section 52 Amplification section 53 Signal processing section 54 Comparison analysis section 55 Information output section CT Counter circuit

Claims (5)

A receiving member provided in one glass door, a locking device main body having a dead bolt which is provided in the other glass door or door portion and can be advanced and retracted with respect to the receiving member, and monitoring for monitoring the glass of the glass door The locking device main body is a locking device that locks by causing the dead bolt to advance and engage with the receiving member by a locking signal, and retracting the dead bolt by a release signal to release the locking. There,
The monitoring device includes a plurality of sound collecting elements for detecting sound from the glass portion to be monitored of the glass door, and a pulse output when the glass is broken based on signals output from the plurality of sound collecting elements. Analysis unit for detecting a smashing sound, a counter circuit for counting the number of pulses of the destructive sound detected by the comparison analysis unit, and the count number of the counter circuit does not reach a predetermined count number within a predetermined time And an information output unit that maintains a sleep state when
When the counter circuit counts a predetermined number of pulses within a predetermined time, the information output unit is changed from a sleep state to an active state, and thereafter, when the predetermined number of pulses is counted within a predetermined time, the information output unit Outputs a signal indicating that glass breakage has occurred, and when the predetermined number of pulses is not counted, the information output unit again enters a sleep state . At least one is one or more opening / closing members that open and close the opening, and the other is provided in one of the opening / closing devices that is either the opening or the other opening / closing member, and can enter and exit the opening / closing operation region of the opening / closing member A locking device comprising: a locking device main body provided with a movable locking member; and a fixing member provided on the other side of the opening / closing device and restricting the opening of the opening / closing device by restraining the movable locking member protruding to one side of the opening / closing device. A device,
A hole that is formed in the fixed member and locks when the movable locking member enters;
A protrusion that is movable in the advancing and retreating direction of the movable locking member and that can contact the edge of the hole as the movable locking member enters the hole;
A contact that is energized by contact between an edge of the hole of the fixing member and the protrusion;
A plurality of sound collecting elements arranged with a disposition interval below the wavelength of the frequency of the breaking sound of the glass part of the switchgear,
The monitoring target area is defined by the delay sum of the sounds detected by the plurality of sound collecting elements, and has information processing means for monitoring the generation of sound of a specific frequency,
The information processing means is in a sleeve state with low power consumption until the sound collecting element detects a glass breaking sound generated when the glass portion is damaged a predetermined number of times, and the sound collecting element detects the glass breaking sound a predetermined number of times. When the glass breakage sound is detected from the sleeve state to the active state where the monitoring operation can be performed and the glass breakage noise is detected a predetermined number of times within a predetermined time after the start of monitoring, the glass breakage occurs. The locking device is characterized in that the control to determine whether or not is started based on a detection signal from the contact . The contact includes a first contact that is energized by contact between an edge of the hole of the fixed member and the protrusion, and the movable locking member further enters the hole of the fixed member after the first contact is energized. 3. The control device according to claim 2, wherein the information processing unit starts the control when the first contact and the second contact are energized with a time difference. Locking device. 3. The locking device according to claim 2, wherein the information processing unit is in a sleeve state again when the glass breaking sound is not detected a predetermined number of times within a predetermined time after the start of monitoring. 5. The locking device according to claim 2, wherein, when the information processing unit determines that the glass breakage has occurred, the information processing unit includes an information output unit that provides information to the surroundings that the glass breakage has occurred. .

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