JP3821505B2 - Lock operation detection device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a detection device, and more particularly to a lock operation detection device that detects that a lock device of an opening / closing part such as a window has been illegally operated.
[0002]
[Prior art]
For example, as shown in Japanese Patent Application Laid-Open No. 58-131275, a door lock confirmation device that detects an operation state of a lock device provided in an opening / closing portion and can be confirmed remotely by a wireless system is known. The door lock confirmation device is a switch that operates in conjunction with the open / close state of the crescent of the lock device of each indoor door body, and a radio that assigns a channel to each door body by the output of the switch and transmits the open / close state of the crescent A transmitter and a receiver that collectively receives transmission signals from the transmitters and monitors and displays a locked state due to the opening and closing of the crescent. In this confirmation device, a multi-channel radio transmitter arranged integrally with or adjacent to the crescent is operated by a switch interlocking with the crescent of the window, and a signal from each receiver is received by the receiver to concentrate on the window. The locked state of the door body can be confirmed.
[0003]
Japanese Laid-Open Patent Publication No. 4-296998 discloses a wireless window opening / closing detection system capable of wirelessly and intensively detecting and displaying the opening / closing of windows corresponding to the locking or unlocking of a plurality of windows. This wireless window open / close detection system generates a plurality of signals having different frequencies and sequentially transmits them at a predetermined cycle, a loop antenna for transmitting and receiving signals, and a plurality of window frames. A plurality of reply means including a resonator having a large Q that generates a reflected signal corresponding to a transmission signal from the signal generating means at a unique frequency set for each window by locking each window; A lock detection display means for detecting the return signal from the reflected signal and displaying the position of the window transmitted by the frequency of the reflected signal, and a loop by switching between the signal generation means and the lock detection display means for each frequency in accordance with a predetermined period. A change-over switch connected to the antenna and alternately forming a transmission circuit and a reception circuit is provided. This wireless window open / close detection system displays unlock detection when a window is unlocked.
[0004]
[Problems to be solved by the invention]
In the wireless window opening / closing detection system disclosed in Japanese Patent Laid-Open No. 4-296998, a plurality of signal generating means for detecting the opening / closing of a plurality of crescent locks generate a plurality of signals having different frequencies and sequentially transmit them at a predetermined cycle. Therefore, it is necessary to clearly distinguish different frequencies of the signal to be used, and there is a disadvantage that the setting and adjustment of the frequency are complicated and difficult. Further, even if signals in different frequency bands are used, the wireless device cannot be operated smoothly because the receiving device cannot always receive signals in a predetermined frequency band.
[0005]
Accordingly, an object of the present invention is to provide a lock operation detection device that can reliably receive radio signals of the same frequency from each sensor device.
[0006]
[Means for achieving the object]
The lock operation detecting device according to the present invention includes a plurality of sensor devices (1) each including a lock device (10) and a lock transmission device (11) that generates a radio signal , and each of the plurality of sensor devices (1). And an alarm control device (2) having a reception control circuit (37) for receiving a radio signal to be transmitted . The lock transmission device (11) of each sensor device (1) includes storage means for storing a code signal and timer means for determining a transmission time interval, and the lock transmission device (11) is determined by the timer means. A radio signal including a code signal at a time interval and oscillated at the same frequency is sent to the alarm control device (2). The time interval and code signal determined by the timer means are different for each sensor device (1). Each locking device (10) includes a hook portion (13), a lever portion (14) that rotates integrally with the hook portion (13), and a magnet (15) embedded in the lever portion (14). . Each sensor device (1) has a reed switch (18) that is actuated by a magnet (15) and connected to a lock transmitting device (11) when the lever portion (14) is rotated to a locked position, and vibration or impact. And an impact sensor (17) connected to the lock transmitting device (11). When the reed switch (18) is activated and an abnormality occurs in the locking device (10) and the impact sensor (17) detects vibration or impact, the lock transmitting device (11) is connected to the reed switch (18) . A radio signal including the output, the output of the impact sensor (17) , and the code signal is transmitted. The reception control circuit (37) receives a radio signal including the output of the reed switch (18) , the output of the impact sensor (17) , and the code signal from the sensor device, and generates an alarm signal. The alarm control device (2) transmits only the output of the reed switch (18) from the sensor device (1) via a wireless signal by the operation of the door lock, and does not transmit the output of the impact sensor (17). , Ru output of the shock sensor (17) and reed switch (18) is switched between a set state that is sent to both alarm control unit (2).
[0007]
The lock transmission device (11) of each sensor device (1) includes a transmission control circuit (22) to which an impact sensor (17) and a reed switch (18) are connected, an antenna (20), and a transmission control circuit (22 ), A transmission drive circuit (19) that generates a radio signal to the alarm control device (2). The alarm control device (2) includes an antenna (20) and a reception drive circuit (36) that receives a radio signal from the sensor device (1), and the reception control circuit (37) includes a reception drive circuit (36). And an alarm signal is given to the display means for displaying the state of the lock device (10). The alarm control device (2) is set by the operation of locking the front door lock.
[0008]
Each of the plurality of sensor devices (1) transmits radio signals of the same frequency including unique codes at different time intervals, and the alarm control device (2) transmits the radio signals from the sensor devices (1) at different timings. Receive.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the lock operation detecting device according to the present invention will be described below with reference to FIGS.
[0010]
As shown in FIG. 1, the lock operation detection device includes a sensor device 1 fixed in a building adjacent to an opening / closing portion such as a window or a door, and an alarm control device that communicates with the sensor device 1 by radio signals. 2 are provided. The alarm control device 2 functions as a master unit of the sensor device 1 installed as 30 slave units. As shown in FIGS. 2 and 3, the sensor device 1 includes a crescent lock 10 as a lock device, and a lock transmission device 11 arranged adjacent to the crescent lock 10. The crescent lock 10 includes a hook portion 13 that rotates about a central shaft 12 and a lever portion 14 that rotates integrally with the hook portion 13. The lock transmission device 11 includes a battery 16 supported on a printed circuit board 33, a film-like impact sensor 17 supported on the printed circuit board 33, a reed switch 18 attached to the printed circuit board 33, and an RF (radio frequency) module. The transmission drive circuit 19 attached to the printed circuit board 33, the antenna 20, the battery 16, the impact sensor 17, the reed switch 18, the transmission drive circuit 19 and the resin case 21 surrounding the antenna 20 are provided. The impact sensor 17 includes an electrode 17a and a conductive film 17b disposed at a predetermined distance from the electrode 17a. As the film 17b, a Kynar (trade name) piezoelectric film that generates a voltage when vibration or impact is applied is used. The reed switch 18 is disposed at a position facing the magnet 15 embedded in the end portion of the lever portion 14 when the lever portion 14 is rotated to the locking position indicated by the dotted line in FIGS. 2 and 3. Turn on. When the lever portion 14 of the crescent lock 10 is rotated to the unlocking position shown by the solid lines in FIGS. 2 and 3, the reed switch 18 is turned off, and the unlocking of the crescent lock 10 can be detected. Further, when an impact is applied to the crescent lock 10, the film 17b generates a voltage, and the impact can be detected.
[0011]
As shown in FIG. 6, the battery 16, the impact sensor 17, the reed switch 18, and the set switch 27 are connected to the transmission control circuit 22. The impact sensor 17 and the reed switch 18 constitute a sensor element. A setting switch 23 that provides a unique code signal of the sensor device 1 is connected to the transmission control circuit 22. The setting switch 23 is constituted by a small switch such as a dip switch, and gives a necessary digit number to the code signal. The transmission control circuit 22 is connected to a transmission drive circuit 19 having an antenna 20. The collector of the transistor 24 having the emitter connected to the battery 16 is connected to the transmission drive circuit 19, and the base of the transistor 24 is connected to the transmission control circuit 22 through the resistor 25. The collector of the transistor 24 is connected to the transmission control circuit 22 via the constant voltage circuit 26. Although not shown, light emitting elements such as buzzers and LEDs provided on the printed circuit board 33 are connected to the transmission control circuit 22, and the buzzers and light emitting elements are activated when a radio signal is generated from the transmission driving circuit 19, Give visual signal. The transmission control circuit 22 is provided with timer means for determining a time interval during transmission. This timer means includes an oscillating circuit and a frequency dividing circuit that divides the output of the oscillating circuit, and gives a different time interval to each sensor device 1 depending on the frequency controlled circuit controlled by the program. For this reason, since the radio signals including code signals are transmitted from the 30 sensor devices 1 to the alarm control device 2 at different time intervals, the alarm control device 2 reliably receives the radio signals from each sensor device 1. can do. The pulse width of this radio signal is about 0.5 seconds, and the sensor device 1 is provided with a time difference of at least 0.5 seconds. The outputs of the reed switch 18 and the impact sensor 17 are sent to the transmission drive circuit 19 through the transmission control circuit 22, and the transmission drive circuit 19 generates a radio signal including a code signal representing the sensor device 1 through the antenna 20. A radio signal is generated from the transmission drive circuit 19 by a timer means provided in the transmission control circuit 22 at a constant time interval, but the time interval for generating the radio signal is different from the time interval of other sensor devices.
[0012]
As shown in FIGS. 4 and 5, the alarm control device 2 includes 30 light emitting elements 30 such as LEDs provided corresponding to a plurality of sensor devices 1 attached corresponding to the opening / closing unit, and a manual setting / A reset button 32, an alarm 34, and an antenna 35 are provided. As shown in FIG. 7, the alarm control device 2 includes a reception drive circuit 36 that includes an antenna 35 as an RF module, and a reception control circuit 37 that is connected to the reception drive circuit 36. The reception control circuit 37 is connected to a light emitting element 30, a manual set / reset button 32, an alarm 34, and an external notification means 38 such as a telephone line. The alarm control device 2 is set by the operation of locking the front door lock.
[0013]
In the above configuration, the sensor device 1 is operated according to the operation sequence shown in FIG.
[0014]
Proceeding from step 60 to 61, the transmission control circuit 22 of the sensor device 1 determines whether or not the crescent lock 10 has been switched from the closed state to the open state. When the crescent lock 10 is released and the reed switch 18 is turned on, the transmission control circuit 22 reads the unique code from the setting switch 23 (step 62) and detects the life of the battery 16 (step 63). Thereafter, the transmission control circuit 22 sends a signal including the unique code and unlocking data to the transmission drive circuit 19, and sends a radio signal from the antenna 20 to the alarm control device 2 (step 64). In step 65, the timer means corresponding to the sensor device 1 is operated to send a radio signal to the alarm control device 2 at a specific time interval. When the crescent lock 10 is in the closed state in step 61, the process proceeds to step 67, and the transmission control circuit 22 determines whether or not the crescent lock 10 is closed. If the crescent lock 10 is released in step 67, the process returns to step 61, and if closed, the process proceeds to step 68. In step 68, when the impact sensor 17 is turned on with the crescent lock 10 closed, the transmission control circuit 22 receives the output of the impact sensor 17 and proceeds to step 62. Thereafter, steps 62-66 are repeated. If the transmission control circuit 22 does not receive the output of the impact sensor 17 in step 68, the process proceeds to step 69, where it is determined whether or not the crescent lock 10 is closed again. When the crescent lock 10 is closed in step 69, the process proceeds to step 62, and when it is opened, the process proceeds to step 61.
[0015]
FIG. 9 is a flowchart showing an operation sequence of the alarm control circuit 2. Proceeding from the start step 70 to 71, the reception control circuit 37 of the alarm control device 2 determines whether or not it is in the set state. The alarm control device 2 is changed from the non-set state to the set state by the operation of locking the front door lock. When the alarm control device 2 is not set, the output of the impact sensor 17 is not transmitted to the alarm control device 2, and only the operation of the reed switch 18 is transmitted from the sensor device 1 to the alarm control device 2 via a radio signal. When the alarm control device 2 is in the set state, the operation of the impact sensor 17 and the reed switch 18 are both transmitted to the alarm control device 2. When the alarm control device 2 is in the set state, the process proceeds to step 72 to receive a wireless signal from the sensor device 1 and determine whether or not the crescent lock 10 is opened. When the crescent lock 10 is released in step 72, the reed switch 18 is turned on by the magnet 15 embedded in the end portion of the lever portion 14, and the transmission control circuit 22 transmits and transmits the detection signal and the unique code of the reed switch 18. The signal is transmitted as radio waves from the circuit 19 via the antenna 20. For this reason, the reception drive circuit 36 of the alarm control circuit 2 receives the radio signal including the code via the antenna 35 and sends the received signal to the reception control circuit 37. Therefore, the reception control circuit 37 turns on the light emitting element 30 to display the opening of the crescent lock 10 (step 73), activates the alarm 34 (step 74), and activates the external notification means 38 (step 75). Thereafter, the reception control circuit 37 determines whether or not the manual set / reset button 32 has been operated (step 76). When the manual set / reset button 32 is operated, the alarm 34 and the external notification means 38 are activated. Stop (step 78). In step 76, if the manual set / reset button 32 is not operated, it is determined whether or not a predetermined time has elapsed after receiving a signal from the sensor device 1 in step 77. If the predetermined time elapses, the process proceeds to step 78 and the predetermined time elapses. Otherwise, the process returns to step 76.
[0016]
When it is determined in step 71 that the transmission control circuit 22 of the sensor device 1 is not in the set state, the process proceeds to step 80, and the reception control circuit 37 determines whether or not the crescent lock 10 is opened by a radio signal from the sensor device 1. To do. If the crescent lock 10 is opened, in step 81, the light emitting element 30 displays opening, and then the process returns to step 71. If the crescent lock 10 is closed in step 80, the closed state is displayed by the light emitting element 30 in step 82, and then the process returns to step 71. In step 72, the transmission control circuit 22 determines that the crescent lock 10 is closed, and proceeds to step 79. In step 79, the transmission control circuit 22 determines whether or not a signal from the impact sensor 17 is received. When the impact sensor 17 is turned on, the transmission control circuit 22 sends a signal including a unique code to the transmission drive circuit 19. Then, a radio signal is transmitted from the antenna 20, and then the process proceeds to steps 74 to 78.
[0017]
As described above, each of the plurality of sensor devices 1 transmits radio signals having the same frequency including code signals at different time intervals, and the alarm control device 2 receives the radio signals from the respective sensor devices 1 at different timings.
[0018]
The embodiment of the present invention is not limited to the above-described embodiment, and can be changed. For example, in the above embodiment, the reed switch 18 is turned on when the crescent lock 10 is locked and the reed switch 18 is turned off when the crescent lock 10 is unlocked. You may comprise so that it may turn on at the time of a lock | rock. In addition to the impact sensor 17 as the sensor element and the reed switch 18 that detects unlocking of the lock device, other sensor elements such as a sensor element that detects opening of the opening / closing part, a proximity sensor such as a hall element, an infrared sensor that detects human approach, etc. Sensor elements can be used.
[0019]
【The invention's effect】
In this invention, each sensor device transmits a radio signal of the same frequency including a unique code at different time intervals, and the alarm control device receives a radio signal from each sensor device at a different timing. Can be reliably received.
[Brief description of the drawings]
FIG. 1 is a schematic view of a house in which a lock operation detection device according to the present invention is installed. FIG. 2 is a front view of a sensor device used in the lock operation detection device of the present invention. FIG. 4 is a front view of an alarm control device used in the lock operation detection device of the present invention. FIG. 5 is a side view of the alarm control device. FIG. 6 is a block circuit diagram of the sensor device. Block circuit diagram of alarm control device [FIG. 8] Flow chart showing operation sequence of sensor device [FIG. 9] Flow chart showing operation sequence of alarm control device [Explanation of symbols]
1 .... Sensor device, 2 .... Alarm control device, 10 .... Crescent lock, 11 .... Lock transmission device, 14 .... Lever part, 15 .... Magnet, 16 .... Battery, 17 .... Shock sensor, 18 ....・ Reed switch, 19 ・ ・ Transmission drive circuit, 20 ・ ・ Antenna, 22 ・ ・ Transmission control circuit, 23 ・ ・ Setting switch, 30 ・ ・ Light emitting element, 32 ・ ・ Manual set / reset button, 34 ・ ・ Alarm, 35 ..An antenna, 36..Reception drive circuit, 37..Reception control circuit, 38..External reporting means

Claims (4)

Lock operation detection comprising a plurality of sensor devices each having a lock device and a lock transmission device for generating a radio signal, and an alarm control device having a reception control circuit for receiving a radio signal generated by each of the plurality of sensor devices In the device
The lock transmission device of each sensor device includes storage means for storing a code signal and timer means for determining a transmission time interval,
The lock transmitting device sends a radio signal including a code signal at a time interval determined by the timer means and oscillated at the same frequency to the alarm control device,
The time interval and code signal determined by the timer means are different for each sensor device,
Each locking device includes a hook portion, a lever portion that rotates integrally with the hook portion, and a magnet embedded in the lever portion,
Each sensor device includes a reed switch that is actuated by a magnet and connected to the lock transmitting device when the lever portion is rotated to the locked position, and an impact sensor that detects vibration or impact and is connected to the lock transmitting device. Prepared,
When the reed switch is activated and an abnormality occurs in the lock device, and the shock sensor detects vibration or shock, the lock transmitter transmits a radio signal including the reed switch output, the shock sensor output, and the code signal. Send
The reception control circuit receives a radio signal including the output of the reed switch, the output of the impact sensor, and the code signal from the sensor device, and generates an alarm signal.
The alarm control device transmits only the output of the reed switch from the sensor device via the radio signal by operating the entrance lock, and the alarm sensor and the output of the reed switch both warn that the output of the impact sensor is not transmitted. lock operation detection device switched characterized Rukoto between the set state is transmitted to the control device.   The lock transmission device of each sensor device includes a transmission control circuit to which an impact sensor and a reed switch are connected, and a transmission drive circuit that includes an antenna and generates a radio signal to the alarm control device by the output of the transmission control circuit. The lock operation detection device according to claim 1.   The alarm control device includes an antenna and a reception drive circuit that receives a radio signal from the sensor device. The reception control circuit receives an output of the reception drive circuit and displays an alarm signal on a display unit that displays the state of the lock device. The lock operation detection device according to claim 1, wherein   The lock operation detection device according to claim 1, wherein the alarm control device is set by a lock operation of the front door lock.

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