JP2012230472A - Crime prevention device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To recognize an intrusion place or an intrusion situation from data transmitted with a warning sound.SOLUTION: A crime prevention device 1 receives a warning sound with an ID code issued from a detection sensor group 5, then generates control signals 105 and 108 for controlling operation of a security device 2 and an imaging device 6. A warning sound reception unit 11 receives the warning sound with the ID code issued from the detection sensor group 5. When a warning sound analysis circuit 12 has detected the ID code, the control signal 105 output by a contact signal generation circuit 13 instructs specific crime prevention processing for an abnormality detected by a detection sensor corresponding to the ID code.

Description

  The present invention relates to a security device.

  There is a known sensor that alerts residents by detecting the destruction of a window and generating an alarm sound (hereinafter referred to as “reporting”). For example, the sensor detects by infrared rays that a window glass is thermally destroyed by a so-called “burning-out” technique and issues a report. The burning method involves the act of unlocking the window locking equipment (such as a crescent lock). Therefore, what has a function which locks the said locking equipment is also known as the said sensor.

  In addition, as shown in Patent Documents 1 and 2 to be described later, there is also known a security device that also transmits an ID number of a detection sensor. It has been proposed to construct a crime prevention device that transmits a signal for notifying the outside of the house by sending an ID signal. In these documents, it is also proposed that an alarm sound is extracted and a room where an intrusion has occurred is recorded by a recording means.

JP 2006-65504 A Japanese Patent No. 4492256

  However, what is proposed in the above document is that a sensor and an alarm sound generation device or a sensor and a recorder (recording device) correspond one-to-one, and a plurality of intrusion locations and situations are not specified. .

  In view of such a problem, an object of the present invention is to recognize an intrusion location or an intrusion situation from data transmitted together with an alarm sound.

  The crime prevention device according to the present invention includes an alarm sound analysis circuit that detects the ID code in an alarm sound that is issued with an ID code individually assigned to the detection sensor, and an individual process based on the ID code. And a first signal generation circuit for generating a first control signal for commanding.

  The intrusion point can be recognized and the corresponding processing can be performed by an external device.

It is a block diagram which illustrates one embodiment of a security device. It is a flowchart which shows the process of a security device and its peripheral device. It is a flowchart which shows the process of a security device and its peripheral device.

  FIG. 1 is a block diagram illustrating one embodiment of a security device. The detection sensor group 5 includes detection sensors 51, 52,. Each of the detection sensors 51, 52,..., 59 may be individually driven by a battery, or the detection sensor group 5 receives power by integrating power sources for driving the detection sensors 51, 52,. Also good.

  The security device 1 receives an alarm sound with an ID code issued from the detection sensor group, and generates control signals 105 and 108 for controlling the operation of the security device 2 and the imaging device 6. Although FIG. 1 illustrates a situation where one detection sensor 51 issues an alarm sound 71 with an ID code, a plurality of detection sensors may each issue an alarm sound with an ID code. As will be described later, the alarm sound with the ID code is analyzed by the security device 1 so that it can be recognized which detection sensor has issued the alarm.

  The security device 2 is, for example, a security light or a reporting device to a security company. As the control signal 105, a so-called relay contact signal (signals for the A contact and the B contact: including contact signals using transistors) is given as an example. be able to. The contact signal is used as a standard in many security devices and security systems, and the security device 2 facilitates linkage with these. For example, when the control signal 105 is activated, a security light is turned on and a security company is notified. The security light may be provided individually corresponding to each of the detection sensors 51, 52,. In this case, the security light corresponding to the detection sensor to which the ID code detected as described later is assigned is turned on. Further, processing corresponding to the detected status code may be performed as described later.

  The imaging device 6 includes imaging elements 61, 62,..., 69 and an imaging control circuit 60 that controls operations of these imaging elements 61, 62,. For example, the imaging elements 61, 62,..., 69 are arranged at positions where the detection targets of the detection sensors 51, 52,.

  The imaging control circuit 60 receives the control signal 108 and controls which of the imaging elements 61, 62,..., 69 should start imaging, should perform a tilt / pan operation, and the like. Alternatively, the imaging control circuit 60 includes a recording device, and can record captured images obtained from the imaging elements 61, 62,. When the control signal 108 is activated, imaging of the imaging elements 61, 62,..., 69 may be started, or image data obtained from the imaging elements 61, 62,. May start. In this case, the imaging element corresponding to the detection sensor to which the ID code detected as described later is assigned operates. In addition, processing such as tilt / pan may be performed corresponding to the status code detected as described below.

  When the time information can be obtained from the control signal 108, the recording data corresponding to the time can be indexed. Alternatively, the imaging control circuit 60 may have a function of transmitting a captured image by e-mail or the like.

  The alarm sound with ID code includes a normal alarm sound and an ID code individually assigned to a detection sensor that issues the alarm sound. Alternatively, a status code indicating the status detected by the detection sensor may be further included. As the ID code and the status code, a DTMF signal or a pulse signal can be adopted. As an alarm sound with an ID code, any alarm code may be issued as long as an ID code or a status code is issued along with a normal alarm sound. An alarm sound and an ID code or status code may be issued alternately.

  Generally, in these methods, information encoding / decoding of at least about 4 bits (0 to 9 and A to F, etc.) is performed. Here, a 4-bit numerical value from 0 to F is used as a code, and an example of discrimination of an ID code and a status code in the present invention will be given.

  For example, one data combining the status code and the ID code is 16 bits, and is divided into four 4-bit blocks and transmitted.

  In order to reduce malfunctions, the most significant bit (MSB) of the status code is 1, and the MSB of the ID code is 0. As a result, the status code and the ID code are each 6 (= 8-2) bit data, and each can have a maximum of 64 different types of information.

  For example, among the detection sensors 51, 52,..., 59, the detection sensors 51 to 57 have hexadecimal numbers 01 to 07 (bit string 00000001 to 00000111) as ID codes, and the detection sensors 58 have hexadecimal numbers 10 (bit) as ID codes. Column 00010000) and hexadecimal 11 (bit column 00010001) can be assigned to the detection sensor 59 as an ID code.

  As an example of the status code, the hexadecimal number 99 (bit string 10011001) indicates that the window was broken (alarm level), and the hexadecimal number A9 (bit string 10101001) indicates that an unknown error occurred (warning). Level), hexadecimal number B8 (bit string 10111000) indicates that the battery output of the detection sensor has dropped, and the signal detected by the detection sensor in hexadecimal number E8 (bit string 11101000) (for example, infrared intensity) becomes unstable. And the alarm level and the alert level are released by hexadecimal number FF (bit string 11111111).

  Of course, the situation code and the ID code are not divided into 8 bits, and a code unique to the combination of the situation code and the ID code may be created.

  In order to prevent malfunction, the 16-bit data may be transmitted a plurality of times, or a checksum (total value) may be transmitted, and the security device 1 that receives the error may detect or correct the error.

  The crime prevention device 1 includes an alarm sound receiving unit 11, an alarm sound analysis circuit 12, and a contact signal generation circuit 13.

  The alarm sound receiving unit 11 receives an alarm sound with an ID code issued from the detection sensor group 5. Therefore, for example, a non-directional microphone or a highly directional microphone having directivity with respect to each of the detection sensors 51, 52,.

  For example, the warning sound analysis circuit 12 gives the sound data 102 received by the warning sound receiver 11 to the sound recognition circuit 14, and the sound recognition circuit 14 gives the matching result 103 to the warning sound analysis circuit 12. When determining whether or not a sound accompanying a crime such as a broken glass sound has occurred, it is also desirable to perform pattern matching on the acoustic waveform using the sound accompanying the crime as a reference sound.

  When it is determined by the alarm sound analysis circuit 12 that sound accompanying the crime is generated, the alarm sound analysis circuit 12 activates the control signal 104 and transmits it to the contact signal generation circuit 13. The contact signal generation circuit 13 activates the control signal 105 by receiving the activated control signal 104.

  The alarm sound analysis circuit 12 analyzes the sound received by the alarm sound receiver 11. When a DTMF signal and a pulse signal are included from the sound, detecting them is realized by a known technique. For such detection, an acoustic recognition circuit 14 for comparing the received sound with the reference sound may be provided. The sound recognition circuit 14 can be constructed by a known digital signal processor.

  When the ID code is detected by the alarm sound analysis circuit 12, the control signals 104 and 105 may include a signal (for example, a bit string of the ID code) indicating the detection sensors 51, 52, ..., 59 corresponding to the ID code. . For example, a security light (not shown) of the security device 2 is provided individually corresponding to the detection sensors 51, 52,... 59, and the control signal 105 output from the contact signal generation circuit 13 is an individual security light. Multiple contact signals are employed for the lamp. That is, the control signal 105 is a signal for instructing individual crime prevention processing for an abnormality detected by the detection sensor corresponding to the ID code.

  Further, when the status code is detected by the alarm sound analysis circuit 12, the control signals 104 and 105 may include a signal corresponding to the status code (for example, a bit string of the status code). This is desirable when the security device 2 can perform a plurality of types of crime prevention processing. Such security response processing is, for example, simply turning on a security light according to the status code, or further sounding a threatening alarm sound accompanied by contact with a security company. In such a case, a plurality of types of control signals 105 are adopted corresponding to a plurality of crime prevention handling processes.

  The security device 1 further includes a time information addition circuit 15 and a control signal generation circuit 16. The time information adding circuit 15 acquires the analysis data 106 and time information 109 indicating the current time, adds the time information 109 to the analysis data 106, and generates a control signal 107. The analysis data 106 includes an ID code or further a status code. The current time is considered to substantially correspond to the criminal time except for the processing time such as the time required for reporting from the detection sensor group 5 and the time for analyzing the alarm sound with the ID code.

  The control signal generation circuit 16 outputs a control signal 108 for operating the imaging control circuit 60 based on the control signal 107. The control signal 108 includes an ID code, a current time, or a status code, and is transmitted to the imaging control circuit 60 in accordance with a standard such as RS-232C, RS-485, or USB. Since the control signal 108 includes the current time, the imaging control circuit 60 is obtained from the imaging elements 61, 62,..., 69 that start imaging and the imaging elements 61, 62,. An index can be added to the recording data corresponding to the time when the recording of the image data is started or the time.

  Further, when the status code is detected by the alarm sound analysis circuit 12, the control signals 107 and 108 may include a signal corresponding to the status code (for example, a bit string of the status code). This is desirable when the imaging device 6 can perform a plurality of types of crime prevention processing. Further, the time information 109 may be input to the alarm sound analysis circuit 12 and the time when the abnormality occurred may be stored in the alarm sound analysis circuit 12.

  The security device 1 includes an integrated control unit 10 that controls the alarm sound receiving unit 11, the alarm sound analysis circuit 12, the contact signal generation circuit 13, the sound recognition circuit 14, the time information addition circuit 15, and the control signal generation circuit 16 in an integrated manner. Have. The integrated control unit 10 includes, for example, a microcomputer and a storage device, and the microcomputer can execute the integrated control by executing each processing step (in other words, a procedure) described in the program. it can. For example, the integrated control unit 10 also has a timekeeping function, and the time information 109 is obtained by the timekeeping function.

  By receiving the alarm sound with the ID code in this way, it is possible to identify the detection sensor that has detected the abnormality, or to further recognize the situation. As a result, the intrusion location or the intrusion situation can be recognized and the corresponding processing can be performed by an external device.

  Since the alarm sound contains data, even when installing a security device at home, etc., most of the indoor wiring is unnecessary, and there is no need to install an expensive wireless transmission / reception system. There is a merit of power reduction.

  The ID code and the situation code included in the alarm sound with the ID code do not need to be continuously included in the alarm sound with the ID code, and may be included separately. 2 and 3 are flowcharts showing the processing of the security device 1 and its peripheral devices (the security device 2 and the imaging device 6) when the ID code and the situation code included in the alarm sound with the ID code are divided every 4 bits. Show. Here, an example in which an 8-bit status code corresponding to an 8-bit ID code is paired with the ID code and included before the ID code is taken as an example. The flowchart of FIG. 2 and the flowchart of FIG. 3 are connected via connectors J1, J2, and J3.

  When the operation of the security device 1 starts (“START” in FIG. 2), data reception determination is performed in step S11. This corresponds to determining whether or not 4-bit data has been extracted by the alarm sound analysis circuit 12 (or further in cooperation with the sound recognition circuit 14). In step S12, it is determined that the number of detections COUNTER is 1 or more and that 4 bits of data are not extracted in a certain time.

  As will be described later, the detection number COUNTER indicates the number of times the status code indicates a predetermined abnormality (for example, the above-described hexadecimal numbers B8, E8, A9, 99). However, the initial value is 0. Normally, when an abnormality is detected, an alarm sound with an ID code is continuously or repeatedly issued, so that the status code continues to be detected and the detection number COUNTER continues to increase. Thus, if the determination in step S12 is YES, an abnormality has been detected once (4 bits of ID code or 4 bits of status code has been detected), but the status code and The ID code is no longer detected. In such a case, since there is a possibility that the detection sensor is destroyed, the process proceeds to step S26 (via the connector J2) (FIG. 3). In step S26, it is determined to perform predetermined alarm processing, for example, processing such as threatening as the highest alarm. For example, a threatening sound is generated by the security device 2.

  If the status code does not indicate any abnormality once, even if 4 bits of data are not extracted for a certain period of time, the process does not proceed to step S26. This prevents the process from proceeding to step S26 if there is no abnormality.

  If the determination in step S12 is NO, it is determined in step S13 whether data has been received (that is, whether data has been extracted). If the determination in step S13 is NO, the process returns to step S11 to wait for data reception. If the determination is YES, it is determined in step S14 whether or not the MSB of the received data is 1. As described above, the MSB of the status code is 1, and the MSB of the ID code is 0. Therefore, if the determination in step S14 is YES, it is determined that the received 4-bit data is part of the status code, and the process proceeds to step S15.

  In this flowchart, the parameter FLAG is adopted. A FLAG value of 0 means that “status data has not been received yet”, a value of 1 means that “4 bits of status code have been received”, and a value of 2 Something is "has received 2 bits of 4 bits of status code", value of 3 is "has already received 1 bit of 4 bits of ID code", value is 4 Indicates that “2 bits of 4 bits of ID code have been received” respectively.

  In step S15, it is determined whether the parameter FLAG is 1 or less. If the determination is YES, the process proceeds to step S16, where "situation code composition" and "FLAG addition" are performed. “Situation code synthesis” means that if one 4 bits of the status code has already been received (FLAG = 1), the 4 bits of the status code and the 4 bits of the newly received status code are synthesized. Indicates that the data is an 8-bit status code. “Situation code composition” also indicates that if none of the 4 bits of the status code has been received yet (FLAG = 0), 4 bits of the newly received status code are retained. “FLAG addition” indicates that the value of the parameter FLAG is increased by one. Since the addition and retention of data is a function of a normal register, details are omitted here.

  If the determination in step S14 is YES and the parameter FLAG value is 2 or more, two 4-bit status codes have already been received, so step S16 is not executed and the parameter FLAG is set to 0. Then, the process returns to step S11.

  If the determination in step S14 is NO, it is determined that the received 4-bit data is a part of the ID code, and the process proceeds to step S17.

  In step S17, it is determined whether or not the parameter FLAG is 2 or more. If the determination is YES, the process proceeds to step S18 to perform "ID code composition" and "FLAG addition". “ID code synthesis” means that when one ID code of 4 bits has already been received (FLAG = 3), 4 bits of the ID code and 4 bits of the newly received ID code are synthesized. Indicates that data as an 8-bit ID code is obtained. “ID code composition” also indicates that if no 4 bits of the ID code have been received yet, 4 bits of the newly received status code is retained. As described above, here, since the situation code corresponding to the ID code is assumed to be paired with the ID code and included before the ID code, the ID code is still Even if none of the 4 bits are received, the status code 4 bits should have been received twice, and the parameter FLAG takes the value 2.

  Therefore, if the determination in step S14 is NO but the value of the parameter FLAG is less than 2, step S18 is not executed. Since it is considered that this is a reception error, the parameter FLAG is set to 0 and the process returns to step S11.

  After execution of step S18, it is determined whether or not the value of FLAG is 4 in step S19. If the determination is NO, since only 4 bits of ID code have been obtained (FLAG = 3), the process returns to step S11. If the determination in step S19 is YES, 8 bits of the status code and 8 bits of the ID code have already been obtained, and the process proceeds to step S20 (FIG. 3) (via connector J1).

  In step S20, it is determined whether or not the status code takes a value FF. As described above, when the status code takes the value FF indicates that the warning level or the warning level has been released. If the determination is YES, the parameter FLAG is initialized (FLAG = 0) and the ID is set in step S28. The code is initialized and the alarm is stopped, and the process returns to step S11 (via connector J3). As initialization of the ID code, for example, a value that does not correspond to any detection sensor, for example, a hexadecimal number 00, can be assigned. The alarm stop means that the control signals 105 and 108 that have been subjected to the security process such as the alarm are deactivated and the security process is stopped.

  Alternatively, the detection number COUNTER may be set to the initial value 0 in step S28.

  If the status code does not take the value FF, “counter addition”, that is, the detection number COUNTER is increased in step S21. When the number of detections COUNTER has taken the initial value 0 in the processing so far, processing corresponding to the abnormality based on the detection sensor is performed for the first time, and the number of detections COUNTER becomes the value 1.

  In step S22, the contents of the status code are determined. If the status code is one of the hexadecimal numbers B8 and E8, the process proceeds to step S23, and the control signal 104 for causing the security device 2 to display an abnormality is generated. Alternatively, the security device 1 itself may have some display device, and a message such as “detection sensor failure” may be displayed on the display device.

  When the status code is hexadecimal A9, a control signal 108 is generated that causes a security process to be executed at the time of alerting, for example, the imaging device 6 performs recording or the like. When the status code is hexadecimal 99, a control signal 105 for generating a security process to be executed at the time of a normal alarm, for example, causing the security device 2 to report to the security company is generated.

  In step S27, control means corresponding to the ID code, for example, lighting of a crime prevention light corresponding to the detection sensor to which the ID code is assigned, or an image sensor (for example, camera) corresponding to the detection sensor to which the ID code is assigned. Imaging or the like is executed by the security device 2 or the imaging device 6. The security device 2 (or the security device 1) may display the number of the detection sensor to which the ID code is assigned. The “transmitter number” in FIG. 3 indicates such a number, and does not necessarily have to be equal to the number indicated by the ID code.

  Of course, the process corresponding to the ID code may also be performed in the execution of step S26. However, since the case where the ID code is not acquired is illustrated here, step S26 is a process corresponding to the ID code. Not.

  After the processes in steps S26 and S27, the process returns to step S11.

  As described above, various crime prevention measures can be taken when the situation code is not obtained even though the processing count COUNTER is 1 or more, or depending on the situation code. That is, crime prevention measures corresponding to various crime situations can be taken.

  Further, since the ID code is individually assigned to the detection sensor, the corresponding crime occurrence place can be estimated according to the detected ID code. Therefore, it is possible to take crime prevention measures corresponding to the crime occurrence location such as imaging the occurrence location.

  As described above, in the security device 1, the alarm sound analysis circuit 12 can determine whether or not a normal alarm sound is generated in addition to the alarm sound with the ID code. Therefore, in order to employ | adopt the said crime prevention apparatus 1, all the detection sensors do not necessarily need to alert | report an alarm sound with an ID code, and the detection sensor which alert | reports a normal alarm sound may be employ | adopted. When waveform pattern matching is performed as described above, a predetermined sound accompanying a crime, such as a broken glass sound, can be detected. Therefore, when the crime prevention apparatus 1 is employed, a detection sensor is not necessarily present. It is not a premise. However, in the case where an alarm sound with an ID code cannot be obtained as described above, the control signals 105 and 108 are not necessarily subjected to processing corresponding to individual detection sensors.

  The above embodiment is an example, and both the ID code and the status code need not be detected. Therefore, an alarm sound that does not include a status code and is accompanied only by an ID code, for example, an alarm sound emitted by an intrusion detection sensor as described in Patent Document 1, is analyzed by the alarm sound analysis circuit 12, and individual alarms based on the ID code are analyzed. Processing may be performed by the security device 2 and the imaging device 6 via the contact signal generation circuit 13 and the control signal generation circuit 16, respectively.

  DESCRIPTION OF SYMBOLS 1 Security device, 12 Alarm sound analysis circuit, 13 Contact signal generation circuit, 16 Control signal generation circuit, 2 Security device.

Claims (5)

An alarm sound analysis circuit for detecting the ID code in an alarm sound issued by the detection sensor with an ID code individually assigned thereto;
A security device comprising: a first signal generation circuit that generates a first control signal that instructs individual processing based on the ID code. The warning sound is accompanied by a status code indicating the status detected by the detection sensor,
The alarm sound analysis circuit detects the status code in the alarm sound,
The crime prevention device according to claim 1, further comprising a second signal generation circuit that generates a second control signal that instructs individual processing based on the status code.   The crime prevention device according to claim 2, wherein a predetermined alarm process is performed when the ID code or the status code is not detected within a predetermined time after the status code or a part thereof is detected once.   The security device according to claim 2 or 3, wherein the second control signal includes the status code and a current time.   The crime prevention device according to any one of claims 1 to 4, wherein the alarm sound analysis circuit also detects a predetermined sound, and the first control signal is activated when the predetermined sound is detected.

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