JP2005309671A - Intruder detection system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To precisely detect intrusion of a non-authenticated person while reducing misreports, compared with a related art. <P>SOLUTION: This intruder detection system comprises a plurality of human body detection sensors 20-1 and 20-2 detecting the human body in determined detection areas and outputting detection signals, respectively, and an intrusion detector 30 with a radio receiver 34 receiving radio wave of an authentication pass signal from a pass authentication card 10. A controller 31 of the intrusion detector 30 determines and detects intrusion of a non-authenticated human body, when the radio receiver 34 receives no radio wave of the authentication pass signal, and the respective detection signals from the human body detection sensors 20-1 and 20-2 are received. Further preferably, the intrusion of the non-authenticated human body is determined and detected when the time difference of the respective detection signals from the sensors 20-1 and 20-2 is a predetermined threshold or less. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an intruder detection system for detecting the intrusion of an unauthenticated intruder.

  Conventionally, an intruder alarm system for detecting and alerting an intruder of an unauthenticated intruder has been put into practical use.

  For example, in Patent Document 1, a deceased person approaching an entrance / exit is detected without causing the eaves to carry a transmitter, and a suspicious person entering from the entrance / exit can be detected. Disclosure.

  The entrance / exit monitoring device includes a portable radio wave transmitter that intermittently emits a weak radio wave including a predetermined ID signal, and a monitoring device main body provided at or near the entrance / exit, , A radio receiver that receives weak radio waves from a portable radio transmitter, a human body detector that detects a person approaching the entrance, and outputs from the radio receiver and human body detector. A control unit that issues an alarm signal on condition that the ID signal from the device is not received and the human body detection unit detects the human body, and an alarm generation unit that issues an alarm in response to the alarm signal from the control unit, It has.

JP 2002-236987 A.

However, there are the following problems.
(1) When detection is performed using one human body detection sensor, a small animal such as a bird or a cat is also determined to be a human and may generate a false alarm.
(2) In addition, there is a case where an error is generated by detecting energy such as a microwave propagating in the air with one human body detection sensor.
(3) Furthermore, the human body detection sensor may react with the human body detection sensor due to the attachment of rainwater or the like, resulting in a false alarm.
(4) Furthermore, if the radio wave from the portable radio wave transmitter is directional, the wireless receiver does not receive it correctly, and even though it owns the portable radio wave transmitter, "There was a case where it was judged as a non-certified person and a false alarm occurred.

  An object of the present invention is to provide an intruder detection system that can solve the above problems, reduce the occurrence of false alarms as compared with the prior art, and can detect the intrusion of an unauthenticated intruder with high accuracy. It is to provide.

An intruder detection system according to the present invention includes a radio wave transmitter that transmits a radio wave of an authentication pass signal,
A plurality of human body detectors each detecting a human body in a predetermined detection area and outputting a detection signal;
Receiving means for receiving radio waves of the authentication path signal;
Control means for detecting and detecting that an unauthenticated human body has intruded when the reception means does not receive the radio wave of the authentication path signal and receives each detection signal from the plurality of human body detectors; It is provided with.

  In the intruder detection system, the control means does not receive the radio wave of the authentication pass signal by the receiving means and receives each detection signal from the plurality of human body detectors, and the plurality of human body detectors. When the time difference between the detection signals from each other is equal to or less than a predetermined threshold value, it is determined that an unauthenticated human body has entered and is detected. Here, the time difference between the detection signals from the plurality of human body detectors is a time difference when each detection signal rises.

The intruder detection system further comprises another receiving means for receiving the radio wave of the authentication pass signal,
When the control means does not receive the radio wave of the authentication path signal by the receiving means or the other receiving means and receives each detection signal from the plurality of human body detectors, an unauthenticated human body It is characterized by detecting that it has entered.

Further, the intruder detection system further comprises another receiving means for receiving the radio wave of the authentication pass signal,
The control means does not receive the radio wave of the authentication path signal by the receiving means or the other receiving means, and receives each detection signal from the plurality of human body detectors, and from the plurality of human body detectors. When a time difference between the detection signals is equal to or less than a predetermined threshold value, it is determined that an unauthenticated human body has entered and is detected. Here, the time difference between the detection signals from the plurality of human body detectors is a time difference when the detection signals rise.

  Still further, in the intruder detection system, the plurality of human body detectors are arranged such that detection areas of the human body detectors overlap each other. Instead, in the intruder detection system, the plurality of human body detectors are arranged such that detection areas of the human body detectors do not overlap each other. Alternatively, in the intruder detection system, the plurality of human body detectors are arranged such that detection areas of the human body detectors do not overlap each other and a dead area is generated between the detection areas. And

  In the intruder detection system, a first wireless transmission unit that wirelessly transmits a signal indicating the reception to the control unit when the radio wave of the authentication pass signal is received by the other reception unit. It is further provided with a feature.

  The intruder detection system further includes second wireless transmission means for wirelessly transmitting a detection signal from at least one of the plurality of human body detectors to the control means. .

  Furthermore, the intruder detection system further includes an informing means for informing that when the control means judges that an unauthenticated human body has entered and is detected.

  Therefore, according to the intruder detection system according to the present invention, when the reception means does not receive the radio wave of the authentication path signal and each of the detection signals from the plurality of human body detectors is received, Since it is determined and detected that a human body has intruded, the occurrence of false alarms can be reduced compared to the prior art, and the intrusion of an unauthenticated intruder can be detected with high accuracy.

  Further, in the intruder detection system, the receiving means does not receive the radio wave of the authentication path signal and receives each detection signal from the plurality of human body detectors, and receives each detection signal from the plurality of human body detectors. When the time difference between the detection signals is equal to or less than a predetermined threshold value, it is determined that an unauthenticated human body has entered and is detected. Here, the time difference between the detection signals from the plurality of human body detectors is preferably the time difference at the rise of each detection signal. Therefore, it is possible to further reduce the occurrence of false alarms and to detect the intrusion of an unauthenticated intruder with high accuracy.

  Hereinafter, embodiments according to the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected about the same component. In the present embodiment, for example, when a building such as a condominium is being renovated, an intruder detection system for detecting and alarming that a non-authenticated person such as a thief enters the building using a construction scaffold. An example of this will be described below.

  FIG. 1 is a block diagram showing a configuration of an intruder detection system installed in a three-story building 500 according to an embodiment of the present invention. In the present embodiment, intrusion detectors 30-1 to 30-3 (hereinafter collectively referred to as reference numeral 30) are provided for each floor and for each intrusion gate. In addition, a plurality of human body detection sensors 20-1 to 20-6 (hereinafter collectively referred to as reference numeral 20) are provided, and at least two human body detectors 20 are provided in each one entry gate. The authenticator possesses a pass authentication card 10 that is a portable radio wave transmitter, and when an unauthenticated intruder who does not have the pass authentication card 10 enters the building 500, the pass authenticator 10 Are not received by the wireless receiver 34, and both detection signals are output from the two human body detectors 20 provided facing each other at one intrusion gate (when the human body is detected, an ON detection signal is output). .)), It is determined that an unauthenticated human body has entered and detected.

  Each human body detection sensor 20 is, for example, a human body detection infrared sensor called a so-called pyroelectric motion sensor, and uses infrared rays from the sensor 20 to detect infrared rays generated when a human or animal having a temperature difference from the surroundings moves. The person or animal is detected by detecting the change in a predetermined detection area. The human body detection sensor 20 has a feature that it has a wide detection area and can be operated with low power consumption.

  In FIG. 1, two human body detection sensors 20-1 and 20-2 are provided at an intrusion gate on the first floor of a building 300, and these human body detection sensors 20-1 to 20-2 are provided in each detection area 21. , 22 are arranged to face each other so as to overlap each other. Detection signals from the human body detection sensors 20-1 and 20-2 are output to the intrusion detector 30-1. On the other hand, the pass authentication card 10 possessed by the authenticator intermittently transmits a predetermined authentication pass signal, which is received by the wireless receiver 34 via the antenna 30A, and the received signal is output to the intrusion detector 30-1. Is done. As will be described in detail later, the intrusion detector 30-1 does not receive the authentication pass signal from the path authentication card 10 by the wireless receiver 34, and detects two human bodies provided facing each other at each intrusion gate. When both detection signals are received from the devices 20-1 and 20-2, it is determined that an unauthenticated human body has entered and detected, and the ID of the intrusion detector 30-1 that is an alarm notification signal for the detection is detected. A detector ID signal including the wireless signal is wirelessly transmitted to the base station apparatus 40 and a local station alarm sound is generated.

  Further, two human body detection sensors 20-3 and 20-4 are provided at the intrusion gate on the second floor of the building 300, and these human body detection sensors 20-3 to 20-4 are provided in the respective detection areas 22 and 24. Are arranged so as to face each other. Detection signals from the human body detection sensors 20-3 and 20-4 are output to the intrusion detector 30-2. The intrusion detector 30-2 does not receive the authentication pass signal from the path authentication card 10 by the wireless receiver 34, and two human body detectors 20-3, 20- provided to face each other at one intrusion gate. When the detection signal is received from both, the detection is made by determining that an unauthenticated human body has entered, and the detector ID signal including the ID of the intrusion detector 30-2, which is an alarm notification signal for the detection, is used as a base. Wirelessly transmits to the station device 40 via the antenna 30B and generates a local station alarm sound.

  Further, two human body detection sensors 20-5 and 20-6 are provided at the intrusion gate on the third floor of the building 300. These human body detection sensors 20-5 to 20-6 are provided in the detection areas 25 and 26, respectively. Are arranged so as to face each other. Detection signals from the human body detection sensors 20-5 and 20-6 are output to the intrusion detector 30-3. The intrusion detector 30-3 does not receive the authentication pass signal from the path authentication card 10 by the wireless receiver 34, and two human body detectors 20-5, 20- provided to face each other at one intrusion gate. When the detection signal is received from both, the detection is made by determining that an unauthenticated human body has entered, and the detector ID signal including the ID of the intrusion detector 30-3, which is an alarm notification signal for the detection, is Wirelessly transmits to the station device 40 via the antenna 30B and generates a local station alarm sound.

  For example, the base station device 40 provided on the second floor receives the detector ID signal, and the signal is transmitted to the antenna 60A via the wireless communication card 51 including the antenna 50A in the personal computer 50 via, for example, a PHS line or a wireless LAN. In response to this, the radio base station device 60 notifies the received detector ID signal through a network such as the Internet 70, a mobile phone network, or a public telephone network, for example. The data is transmitted to the personal computer 80, which is a terminal device, and the personal computer 80 generates an alarm sound, displays an intrusion alarm, and displays a detector ID. In FIG. 1, the detector ID signal is transmitted from the personal computer 50 via the Internet 70. However, the present invention is not limited to this, and a mobile phone, for example, is used from the personal computer 50 or the base station device 40. Then, it may be directly transmitted wirelessly to a mobile phone which is a receiving terminal of the alarm notification signal.

  FIG. 2 is a block diagram showing a configuration of the pass authentication card 10 of FIG.

  In FIG. 2, a path authentication card 10 is a portable small-sized radio wave transmitter, a controller 11 that controls the operation thereof, a wireless transmitter 12 that intermittently transmits an authentication path signal via an antenna 10A, and an authentication And an external interface 13 detachably connected to an external input device 16 for inputting path ID data. Here, the wireless transmitter 12 is a wireless transmitter that transmits weak radio waves in a 400 MHz band, for example. By turning on the switch 14, the power supply voltage is supplied from the rechargeable battery 15 to the controller 11, the wireless transmitter 12, and the external interface 13, and these are in an operating state. At this time, the controller 11 stores authentication path ID data in a non-volatile memory. When the switch 14 is turned on, the controller 11 reads the authentication path ID data and outputs it to the wireless transmitter 12. In accordance with the authentication path ID data, for example, as shown in FIG. 9, the transmitter 12 sends an 8-bit authentication path signal including the authentication path ID data to a transmission period of 0.3 seconds and 0.8 seconds. It has a waiting period and intermittent transmission is repeated 5 times. That is, the authenticator possesses the pass authentication card 10 and turns on the switch 14 to pass through the intrusion gate.

  Note that the switch 14 may not be turned on by the user, but may be turned on intermittently, for example, for 3 minutes only when the vibration sensor provided in the pass authentication card 10 detects a vibration of a predetermined threshold value or more. Thereby, a switchless and power saving effect can be obtained.

  FIG. 3 is a block diagram showing a configuration of the intrusion detector 30 of FIG.

  In FIG. 3, an intrusion detector 30 includes a controller 31 for controlling the entire operation thereof, and an optional foot switch provided below the human body detectors 20-1, 20-2 and the place where the intruder passes through the intruder. 35 is connected to a determination circuit 33 that determines a detection signal from these, and a wireless communication device 32 that wirelessly transmits a detector ID signal at the time of intrusion determination of an unauthenticated person and receives an ACK signal from the base station device 40 And a speaker 36 that generates and outputs a local station alarm sound when an unauthenticated person intrudes. Here, the wireless communication device 32 is a transceiver that transmits and receives a specific low-power wireless signal in, for example, a 400 MHz band. Further, the controller 31 has an antenna 30A and receives the authentication pass signal from the path authentication card 10 and outputs the received signal. The controller 31 also has an antenna 30Aa and authenticates from the path authentication card 10. And a wireless receiver 34a that receives the path signal and outputs the received signal. These two radio receivers 34 and 34a are preferably provided in different locations near the intrusion gate so that diversity reception is possible.

  When the optional foot switch 35 is not provided, the determination circuit 33 detects both the detection signals from the two human body detectors 20-1 and 20-2 and detects the detection time difference between the rising edges of the detection signals shown in FIG. When t0 is less than or equal to a predetermined threshold, an ON detection signal is output to the controller 33. When the optional foot switch 35 is provided, the determination circuit 33 detects both the detection signals from the two human body detectors 20-1 and 20-2 and the foot switch 35, and each detection shown in FIG. An ON detection signal is output to the controller 33 when the detection time difference t0 of signal rise is equal to or less than a predetermined threshold value. When the controller 31 does not receive the authentication pass signal from the wireless receivers 34 and 34a within the predetermined time and receives the ON detection signal from the determination circuit 33, the controller 31 determines that an unauthenticated person has entered. The self-station alarm sound is generated and output to the speaker 36, and the base station device 40 is detected via the wireless communication device 32 from the detector ID, the charging state of the rechargeable battery of the pass authentication card 10, and the pass authentication card 10. The detector ID signal, which is an alarm notification signal including information such as signal strength when the radio wave 34 is received by the wireless receiver 34 or 34a, is transmitted.

  In the intrusion detector 30 of FIG. 3 described above, the wireless communication device 32 and the wireless receiver 34 or 34a are separately configured. However, the present invention is not limited to this, and the same wireless communication device may be used. Good.

  FIG. 4 is a block diagram showing a configuration of the base station apparatus 40 of FIG.

  In FIG. 4, a base station apparatus 40 has an antenna 40A, receives a detector ID signal from the intrusion detector 30, and returns an ACK signal in response thereto, and the operation of the base station apparatus 40 A controller 41 that controls the whole, a liquid crystal display 43 that displays information such as a detector ID included in the detector ID signal, and an external interface 44 that is connected to the personal computer 50 are configured. When the controller 41 receives the detector ID signal by the wireless communication device 42, information such as the detector ID included in the detector ID signal (in addition to the detector ID, the charging state of the rechargeable battery of the pass authentication card 10, Information including signal intensity when the radio wave from the pass authentication card 10 is received by the wireless receiver 34 or 34a) is displayed on the liquid crystal display 43, and a detector ID signal including such information is displayed on the external interface 44. To the personal computer 50.

  FIG. 5 is a front view showing a first example of installation of the human body detection sensors 20-1 and 20-2 shown in FIG. In FIG. 5, two intrusion gate pillars 91 and 92 are erected so as to sandwich the intrusion gate at each intrusion gate where an authenticator or a non-authenticator can enter, and an area between them is detected. In addition, human body detection sensors 20-1 and 20-2 are provided on the intrusion gate pillars 91 and 92, respectively. Here, the human body detection sensors 20-1 and 20-2 are arranged so that the detection areas 91 and 92 of the human body detection sensors 20-1 and 20-2 are overlapped with each other, whereby the two human body detection sensors 20-1. , 20-2, it is regarded as “human body detection” only when a human body or the like has entered the area where the detection areas 91 and 92 overlap, so that the detection range can be narrowed down and the occurrence of false alarms is significantly reduced. Further, since the false alarm is generated only when the two human body detection sensors 20-1 and 20-2 are erroneously recognized at the same time, the generation of the false alarm is remarkably reduced.

  However, the installation example of FIG. 5 has a problem that when a small animal such as an overlapping detection area bird passes, it may be mistaken for a human body. To solve this, the embodiment of FIG. 6 is proposed. FIG. 6 is a front view showing a second embodiment of the installation of the human body detection sensors 20-1 and 20-2 shown in FIG. In FIG. 6, the problem of FIG. 5 is solved, and the insensitive area 29 is provided by shifting so that the detection areas 91 and 92 of the human body detection sensors 20-1 and 20-2 do not overlap. If the width of the dead area 29 is made larger than that of a small animal such as a bird, the human body detection sensors 20-1 and 20-2 are not detected at the same time, and false alarms are reduced. Since the human body is sufficiently large, the human body detection sensors 20-1 and 20-2 can detect simultaneously. That is, there is a system that does not react to small animals such as birds but reacts only to the human body.

  FIG. 7 is a flowchart showing intrusion detection processing executed by the controller 31 of the intrusion detector 30 of FIG.

  In FIG. 7, first, in step S1, it is determined whether or not both are detected by the human body detection sensors 20-1 and 20-2. If YES, the process proceeds to step S2, while if NO, the process returns to step S1. In the determination in step S1, preferably, as shown in FIG. 8, the detection time difference t0 between the rising times of the detection signals from the two human body detection sensors 20-1 and 20-2 is a predetermined threshold value. When it is less than (for example, several hundred milliseconds), it is determined that the human body has invaded at the intrusion gate. In the determination in step S1, the time difference between the detection start points that are the rising edges of the two detection signals is measured, and if there is a large difference in the time difference even if there is an overlap, it is determined that the human body is not determined. In the case of the human body, since the detected object is large, it is almost always detected at the same time or with a small time difference.On the other hand, in the case of small animals other than the human body, the time difference is relatively large, preventing false detection, Effective when trying to detect.

  Next, in step S2, the wireless receivers 34 and 34a are set to the reception mode, and in step S3, it is determined whether or not the authentication pass signal is received by the wireless receiver 34 or 34a for 3 seconds. Is determined to pass the authenticator and proceeds to step S4, while if NO, it is determined that the non-authenticator has passed and the process proceeds to step S5. In step S4, the radio receivers 34 and 34a are set to the sleep mode, and then the process returns to step S1.

  Further, in step S5, the local station alarm sound is generated and output from the speaker 36, the wireless transmission frequency parameter n is reset to 1, and in step S7, the detector ID including information such as the ID number of the intrusion detector 30 is detected. A signal is wirelessly transmitted to the base station apparatus 40, and it is determined whether or not an ACK signal that is an acknowledgment signal is received from the base station apparatus 40 in step S8. If YES in step S8, the process returns to step S4. If NO, the process proceeds to step S9. In step S9, the wireless transmission frequency parameter n is incremented by 1. In step S10, it is determined whether n> N (a predetermined maximum number of times threshold, for example, N = 20). While returning to step S4, if NO, the process returns to step S7.

  FIG. 10 is a timing chart showing wireless communication procedures and their operations between the path authentication card 10 and the intrusion detector 30 shown in FIG. In FIG. 10, the detection signals from the two human body detection sensors 20-1 and 20-2 are both used. As shown in FIG. 8, when detected within a predetermined time difference, the wireless receiver 34 changes from the sleep mode to the reception mode, and the wireless receiver 34 waits for 3 seconds to receive the authentication pass signal. During this time, when one of the 8-bit data of the authentication pass signal is received from the pass authentication card 10, the intrusion detector 30 executes the processes of steps S5 to S10 in FIG. Set to.

  FIG. 11 is a timing chart showing wireless communication procedures and operations between the intrusion detector 30 and the base station apparatus 40 of FIG. As shown in FIG. 11, when the intrusion detector 30 does not receive the authentication path signal in the waiting period of 3 seconds of the authentication path signal of the wireless receiver 34, the wireless communication device 32 receives the 8-bit data. Transmit 10 times repeatedly (1 second transmission), then wait for 2 seconds to receive an ACK signal, and repeat this 20 times. In the example of FIG. 11, when any one of the second detector ID signals is received, the wireless communication device 42 in the base station device 40 returns an ACK signal. When the wireless communication device 32 receives the ACK signal, the operation mode of the wireless receiver 34 is switched from the sleep mode to the reception mode.

  FIG. 12 is a block diagram showing a partial configuration of an intruder detection system according to a modification of the present invention. The modification is characterized in that an intrusion detector 230 that wirelessly communicates with the intrusion detector 130 is provided near the position where the human body detection sensor 20-2 is provided, as compared with the embodiment of FIG.

  In FIG. 12, the intrusion detector 130 receives the authentication path signal having the controller 31 connected to the human body detector 20-1, the wireless communication device 32 having the antenna 30 </ b> B, and the antenna 30 </ b> A. A wireless signal transmitted from the wireless receiver 34 to be output and the wireless transmitter 235 in the intrusion detector 230 is transmitted from the detection signal of the human body detection sensor 20-2 and the authentication pass signal detected by the wireless receiver 234. And a wireless receiver 134 for reception. On the other hand, the intrusion detector 230 includes a controller 231 connected to the human body detector 20-2, a wireless communication device 234 having an antenna 230B and receiving an authentication path signal, and an antenna 235A and a human body detection sensor 20-. 2 and a wireless transmitter 235 that wirelessly transmits an authentication path signal detected by the wireless receiver 234 toward the antenna 130A of the wireless receiver 134. Here, when the controller 231 receives the detection signal from the human body detection sensor 20-2, the controller 231 transmits the detection signal to the antenna 130A of the wireless receiver 134 in the intrusion detector 130 via the wireless transmitter 235. To control. In addition, the controller 231 performs control so that the authentication path signal received by the wireless receiver 234 is transmitted to the antenna 130 </ b> A of the wireless receiver 134 in the intrusion detector 130 via the wireless transmitter 235.

  In the modified example configured as described above, even if the installation locations of the human body detection sensors 20-1 and 20-2 are separated or the installation locations of the wireless receivers 34 and 234 are separated, the human body can be wirelessly communicated. There is a specific effect that the detection signal of the detection sensor 20-2 and the authentication path signal received by the wireless receiver 234 can be transferred via a wireless line.

  In addition, if the radio wave from the path authentication card 10 has directivity, it may not be received even at a close distance. However, since the authentication path signal is received by the radio receivers 34 and 234 at different locations, Similarly, by providing a plurality of wireless receivers, radio waves from the path authentication card 10 can be reliably received. Accordingly, the false alarm that “alarm is issued even though it is a certifier” is remarkably reduced. The same applies to the system of FIG.

  In the above modification, in the intrusion detector 130, the wireless communication device 32 and the wireless receivers 34 and 134 are configured separately, but the present invention is not limited to this, and is configured by the same wireless communication device. Also good. Further, in the intrusion detector 230, the wireless receiver 234 and the wireless transmitter 235 are separately configured, but the present invention is not limited to this, and may be configured by the same wireless communication device.

  As described above, conventionally, when detecting only a human body with high accuracy, it has been necessary to use expensive equipment or complicated equipment such as image determination. Power consumption was large and it was necessary to draw an external power supply. On the other hand, according to the intruder detection system according to the present embodiment and the modification, it is possible to operate with extremely small electric power using the human body detection sensor 20 or the like.

  In the above embodiments and modifications, the human body detection sensor 20 which is a human body detection infrared sensor called a so-called pyroelectric motion sensor is used, but the present invention is not limited to this, and an optical sensor, an ultrasonic sensor, a vibration A human body detection sensor such as a sensor may be used.

  As described above, according to the intruder detection system according to the present invention, when the reception means does not receive the radio wave of the authentication path signal and receives the detection signals from the plurality of human body detectors together. Since it is determined and detected that an unauthenticated human body has intruded, the occurrence of false alarms can be reduced compared to the prior art, and the intrusion of an unauthenticated intruder can be detected with high accuracy.

  Further, in the intruder detection system, the receiving means does not receive the radio wave of the authentication path signal and receives each detection signal from the plurality of human body detectors, and receives each detection signal from the plurality of human body detectors. When the time difference between the detection signals is equal to or less than a predetermined threshold value, it is determined that an unauthenticated human body has entered and is detected. Here, the time difference between the detection signals from the plurality of human body detectors is preferably the time difference at the rise of each detection signal. Therefore, it is possible to further reduce the occurrence of false alarms and to detect the intrusion of an unauthenticated intruder with high accuracy.

It is a block diagram which shows the structure of the intruder detection system installed in the three-story building 500 which concerns on embodiment of this invention. It is a block diagram which shows the structure of the pass authentication card | curd 10 of FIG. It is a block diagram which shows the structure of the intrusion detector 30 of FIG. It is a block diagram which shows the structure of the base station apparatus 40 of FIG. It is a front view which shows the 1st Example of installation to the intrusion gate pillars 91 and 92 of the human body detection sensors 20-1 and 20-2 of FIG. It is a front view which shows the 2nd Example of installation to the intrusion gate pillars 91 and 92 of the human body detection sensors 20-1 and 20-2 of FIG. It is a flowchart which shows the intrusion detection process performed by the controller 31 of the intrusion detector 30 of FIG. In the intruder detection system of FIG. 1, it is a timing chart which shows the detection time difference t0 of the detection signal of the human body detection sensor 20-1, and the detection signal of the human body detection sensor 20-2. It is a figure which shows the signal format of the pass signal for authentication intermittently transmitted from the pass authentication card | curd 10 of FIG. It is a timing chart which shows the radio | wireless communication procedure between the path | pass authentication card | curd 10 of FIG. 1, and the intrusion detector 30, and those operation | movement. It is a timing chart which shows the radio | wireless communication procedure between the intrusion detector 30 of FIG. 1, and the base station apparatus 40, and those operation | movement. It is a block diagram which shows the structure of a part of intruder detection system which concerns on the modification of this invention.

Explanation of symbols

10: Pass authentication card,
11 ... Controller,
12 ... wireless transmitter,
13 ... External interface,
14 ... switch,
15 ... rechargeable battery,
16 ... external input device,
20-1 to 20-6 ... human body detection sensor,
21 to 26 ... detection area,
29 ... Insensitive area,
30, 30-1 thru | or 30-3 ... intrusion detector,
30A, 30Aa, 30B, 40A, 50A, 60A, 130A, 230A, 235A ... antenna,
31 ... Controller,
32 ... Wireless communication device,
33 ... judgment circuit,
34, 34a ... wireless receiver,
35 ... Foot switch,
36 ... Speaker,
40. Base station device,
41 ... Controller,
42 ... wireless communication device,
43 ... Liquid crystal display,
44 ... External interface,
50 ... Personal computer,
51. Wireless communication card,
60 ... Wireless base station device,
70 ... Internet,
80 ... Personal computer,
91, 92 ... Intrusion gate pillar,
100 ... human,
101 ... bird,
130, 230 ... intrusion detector,
134 ... wireless receiver,
234 ... a wireless receiver,
235 ... a wireless transmitter,
500 ... Building.

Claims (12)

A radio wave transmitter for transmitting the radio wave of the authentication pass signal;
A plurality of human body detectors each detecting a human body in a predetermined detection area and outputting a detection signal;
Receiving means for receiving radio waves of the authentication path signal;
Control means for detecting and detecting that an unauthenticated human body has intruded when the reception means does not receive the radio wave of the authentication path signal and receives each detection signal from the plurality of human body detectors; An intruder detection system characterized by comprising:   The control means does not receive the radio wave of the authentication pass signal by the receiving means, receives each detection signal from the plurality of human body detectors, and time difference between the detection signals from the plurality of human body detectors. 2. The intruder detection system according to claim 1, wherein when the value is equal to or less than a predetermined threshold, it is determined and detected that an unauthenticated human body has intruded.   The intruder detection system according to claim 2, wherein the time difference between the detection signals from the plurality of human body detectors is a time difference when the detection signals rise. Further comprising another receiving means for receiving the radio wave of the authentication path signal,
When the control means does not receive the radio wave of the authentication path signal by the receiving means or the other receiving means and receives each detection signal from the plurality of human body detectors, an unauthenticated human body The intruder detection system according to claim 1, wherein the intruder detection system detects that an intrusion has occurred. Further comprising another receiving means for receiving the radio wave of the authentication path signal,
The control means does not receive the radio wave of the authentication path signal by the receiving means or the other receiving means, and receives each detection signal from the plurality of human body detectors, and from the plurality of human body detectors. The intruder detection system according to claim 1, wherein when the time difference between the detection signals is equal to or less than a predetermined threshold value, it is determined that an unauthenticated human body has entered, and is detected.   6. The intruder detection system according to claim 5, wherein the time difference between the detection signals from the plurality of human body detectors is a time difference when the detection signals rise.   The intruder detection system according to claim 1, wherein the plurality of human body detectors are arranged such that detection areas of the human body detectors overlap each other.   The intruder detection system according to any one of claims 1 to 6, wherein the plurality of human body detectors are arranged such that detection areas of the human body detectors do not overlap each other.   The plurality of human body detectors are arranged such that detection areas of the human body detectors do not overlap each other and a dead area is generated between the detection areas. The intruder detection system according to any one of the above.   The wireless communication apparatus further comprises first wireless transmission means for wirelessly transmitting a signal indicating reception to the control means when the other reception means receives the radio wave of the authentication path signal. The intruder detection system according to claim 4, 5 or 6, or a claim dependent on claim 4, 5 or 6.   11. The wireless communication device according to claim 1, further comprising a second wireless transmission unit that wirelessly transmits a detection signal from at least one of the plurality of human body detectors to the control unit. The intruder detection system according to claim 1. 12. The information processing apparatus according to claim 1, further comprising an informing means for informing that when the control means judges that an unauthenticated human body has entered and is detected. Intruder detection system.

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