JP4564117B2 - Security system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a security system that detects anomalies by installing a plurality of at least two types of sensors in a monitoring area, and in particular, the types of sensors that are set to be preferentially detectable among different types of sensors are abnormal. The present invention relates to a security system that, when detected, activates other types of sensors and comprehensively determines abnormalities in a monitoring area based on detection information obtained between these different types of sensors.
[0002]
[Prior art]
Security systems that detect persons who have intruded into buildings or the like generally use infrared sensors as security sensors to detect the presence of intruders because they are inexpensive and easy to install. Used. According to this security system, by installing a plurality of infrared sensors in the monitoring area, a predetermined temperature change in the monitoring area can be regarded as the presence of an intruder. Then, the fact that an intruder has been detected by the infrared sensor, that is, the detection signal is transmitted to a monitoring device that supervises the security system, and is transmitted to a remote monitoring center as necessary. As a result, a guard or a manager residing in the monitoring center can know whether or not an abnormality has occurred.
[0003]
Among infrared sensors used as security sensors, a passive infrared sensor (referred to as a passive sensor) that satisfies the requirements of small size, high sensitivity, and low power consumption is particularly useful. This passive sensor is actually a guard equipped with a signal processing circuit such as a multi-lens for increasing the directivity of detection, an amplifier for amplifying the detection signal, and a comparator circuit for detecting a temperature change due to body temperature. Often introduced into the system.
[0004]
However, this passive sensor also responds to temperature changes caused by the generation of heat sources due to reception of thermal faxes, the blowing of warm air from air conditioners, and small animals such as cats, mice, birds, etc. Inadvertently output a detection signal, so-called false alarm.
[0005]
In particular, the problem caused by the invasion of small animals described above is a reflection type infrared sensor that irradiates a monitoring region with light from a high-power near-infrared light emitting diode (near-infrared LED) and detects the human body from the presence or absence of the reflection. Is not solved. Reflective infrared sensors require more driving power than passive sensors, so special consideration must be given to the installation of power supply wiring, especially in security systems that are configured with multiple sensors in a wide range of monitoring areas. Is not preferable.
[0006]
Therefore, in order to solve this problem, a security system has been devised in which a surveillance camera such as a CCD camera is installed, and at the same time a temperature change is sensed by a conventional passive sensor, and at the same time, video surveillance by this surveillance camera is used. Specifically, when a detection signal is output by the passive sensor, an image is taken by the monitoring camera, and the information is sent to the monitoring center via the monitoring device. Thereby, the monitoring center can confirm whether or not the detection by the passive sensor is true abnormality detection caused by an intruder or the like.
[0007]
However, in order to implement a system that installs a surveillance camera and remotely transmits captured images, it is necessary to provide power supply wiring and image transmission wiring to supply sufficient power to the surveillance camera. The system configuration becomes complicated and expensive because it must handle data with a large amount of information such as images, and it is necessary to constantly monitor images by a person resident in a monitoring center etc. Problems arise.
[0008]
As a security system using a combination of such a passive sensor and a surveillance camera, for example, a “security system” disclosed in Japanese Patent Application Laid-Open No. 8-149455 has a configuration in which a detection sensor corresponding to the above-described passive sensor and a surveillance camera are integrated. When a sensor that has entered a predetermined monitoring area is detected by the detection sensor, the processing device immediately operates the monitoring camera to acquire a plurality of pieces of image information, and obtains initial image information and other images. Since intruder determination processing is performed by comparing the information, there is no false alarm, and image processing is performed when necessary, thus saving power.
[0009]
On the other hand, in recent years, an artificial retina sensor has been developed as an imaging means to replace a conventional surveillance camera such as a CCD camera, and the use of this artificial retina sensor has been proposed in a security system. In order to perform image detection using a conventional surveillance camera, an image signal detected by a CCD camera is sent to an image processing processor such as an expensive DSP (Digital Signal Processor) or ASIC (Application Specific Integrated Circuit) and processed there. -It was necessary to perform feature extraction and recognition processing. However, in the system using this CCD camera, there are limits to the downsizing and cost reduction of system components and the image processing speed. The artificial retina sensor described above can detect images projected by visible light and near infrared rays, and at the same time perform specified image processing and feature extraction (normal image detection, edge detection that makes edges stand out, variable resolution, etc.) The subsequent processing of image signal recognition and determination is made possible by an inexpensive processing device. The details of the artificial retina sensor are as disclosed in JP-A-10-93358.
[0010]
In particular, this artificial retina sensor can be operated with a low power equivalent to the power supplied to a conventional sensor, recognizes a moving object from the captured video, and extracts only the motion information as a vector. It is also possible to determine the size of the detected moving object. Therefore, it is possible to identify whether the detected object is a human body or a small animal as described above.
[0011]
Therefore, in the above-described security system, when this artificial retina sensor is introduced in place of a surveillance camera such as a CCD camera and used in combination with a passive sensor, even if a small animal is mistakenly detected as an intruder by the passive sensor, the artificial retina sensor By detecting the size of the moving object by, it is possible to determine that the detected object is not an intruder but a small animal, and the occurrence of false alarms can be prevented.
[0012]
In addition, the artificial retina sensor can be operated as a video camera by an external control signal, and without a new imaging device such as a CCD camera newly installed, it can be visually monitored by a security guard or a long-time recording VTR. Can be used for image recording.
[0013]
[Problems to be solved by the invention]
However, when a plurality of types of sensors having different detection principles are used in combination, such as the above-described configuration in which the passive sensor and the artificial retina sensor are combined, the detectable range is usually different between different types of sensors. A detection object (an intruder or the like) detected by a certain type of sensor (hereinafter referred to as a first sensor) is triggered by the detection of the abnormality of the sensor (hereinafter referred to as a second sensor). (Referred to as “Sensor”) may not be included in the anomaly detectable range.
[0014]
That is, even if the first sensor can detect the abnormality normally, the second sensor that should be intended for more reliable abnormality detection may not be able to obtain the abnormality detection. For example, in the above-described example, if the first sensor is a passive sensor and the second sensor is an artificial retina sensor, the time between the time lag until the passive sensor detects an abnormality when the detected object moves at a high speed or the like. The detected object moves out of the imaging range by the artificial retina sensor, the detected object cannot be detected as a moving object, and it may be determined that there is no abnormality.
[0015]
This situation is assumed when the detected object passes through the detection area and enters the shooting range and then moves outside the shooting range, or the detected object moves to the blind spot due to an obstacle. The case where it did is considered. A similar problem occurs when the installation positions of the passive sensor and the artificial retina sensor are separated.
[0016]
Furthermore, in the above-described artificial retina sensor, moving objects such as moving shadows, moving objects outside windows, and moving / changing light such as blinking are recognized as moving objects. If it is identified as human equivalent, it may be determined as an “intruder”.
[0017]
As described above, according to the conventional security system having the configuration in which the first sensor and the second sensor are combined, the false alarm can be reduced by multiplexing the abnormality detections of different principles, but between different types of sensors. Since it is premised that effective abnormality detection can be performed for the first time when a detection object exists in a common detection range, a state in which a true abnormality cannot be detected due to a shift in the detection range as described above, so-called unreported Could have occurred.
[0018]
The present invention has been made to solve the above-mentioned problems. By installing different types of sensors in the monitoring area and associating them, it detects other than intruders such as small animals and outputs a detection signal. The purpose is to provide a security system that avoids both the problem of false alarms and the problem of false alarms where no detection signal is output even though the intruder is within the scope of security, and has improved the reliability of abnormality detection. To do.
[0019]
[Means for Solving the Problems]
  In order to solve the above-described problems and achieve the object, the security system according to the present invention detects the abnormality in the security system that notifies an external monitoring center of an abnormality in the monitoring area caused by an unauthorized intruder or the like. And at least one first detection means, a plurality of second detection means that are activated in response to the abnormality detection by the first detection means, and that detect the abnormality by a detection principle different from the first detection means, Monitoring means for notifying the monitoring center of the occurrence of an abnormality in the monitoring area in response to the abnormality detection by the second detection means.Here, each of the first detection means and the second detection means is given unique identification information, and a detection signal indicating the abnormality detection and an identification signal indicating the identification information are transmitted via a common line. The first detection means transmits the identification signal together with the detection signal, the monitoring means receives the identification signal, and selects the second detection means based on the received identification signal. An activation signal for activation is transmitted, and the second detection means is activated by receiving the activation signal. Furthermore, the first detection means outputs a detection signal having a different intensity according to a distance between the first detection means and the detection target, a size of the detection target, or a temperature difference between the detection target and the surrounding environment, The monitoring means indicates a correspondence relationship between the identification information of the first detection means and the intensity indicated by the detection signal, and the identification information of the second detection means activated according to the intensity indicated by the identification information and the detection signal. By storing the reference table and receiving the identification signal, the first detection means that has detected an abnormality is specified, and the activation signal is transmitted to the second detection means determined by the reference table.
[0020]
  According to this invention, the second detection means capable of verifying whether the abnormality detection is valid by detecting the abnormality of the first detection means, and capable of acquiring detection data of a different type from the first detection means. The monitoring center can notify the monitoring center that an abnormality has occurred only when the abnormality is detected by the second detection means.In addition, the identification signal can identify the first detection means that has detected an abnormality, and the second detection means to be activated can be designated. Furthermore, by using a reference table that shows the relationship between the intensity of the detection signal of the first detection means that operates preferentially and the second detection means to be activated, according to the distance between the first detection means and the detection target. Thus, the second detection means can be selectively activated.
[0029]
  In the security system according to the next invention, the claim1'sIn the present invention, the second detection means includes an artificial retina sensor that detects a moving object as the abnormality detection.
[0030]
According to the present invention, since the artificial retina sensor is used as the detection means for performing abnormality detection, it is possible to recognize a moving object and acquire a moving direction.
[0031]
  In the security system according to the next invention, the claim1'sIn the invention, the second detection means has a moving object and an artificial retina sensor for detecting the moving direction as the abnormality detection, and indicates the moving direction of the moving object together with the identification signal when the moving object is detected. A movement signal is transmitted, and the monitoring means includes the identification information of the second detection means and the movement direction indicated by the movement signal, and the identification information and the identification information of the other second detection means activated in accordance with the movement direction. The tracking reference table showing the correspondence relationship between and is stored, and by receiving the identification signal, the second detection means detecting the moving object is specified, and the second detection determined by the tracking reference table The activation signal is transmitted to the means.
[0032]
According to the present invention, a moving object such as an intruder can be tracked and photographed by using the moving direction detection function of the artificial retina sensor.
[0033]
  In the security system according to the next invention, the claim2Or3In the invention, the second detection means starts counting the predetermined time in response to the abnormality detection by the first detection means and activates the artificial retina sensor, and after the predetermined time has elapsed, It has a starting control part which stops operation.
[0034]
According to the present invention, it becomes possible to continue the operation of the artificial retina sensor for a predetermined time by the activation control unit of the artificial retina sensor.
[0035]
  In the security system according to the next invention, the claim1In this invention, the monitoring means specifies the first detection means that has detected an abnormality by receiving the identification signal, transmits the activation signal to the second detection means determined by the reference table, and for a predetermined time. And when the predetermined time elapses, a stop signal for stopping the operation of the second detection means is transmitted, and the second detection means is started when the start signal is received, and the stop signal It operates until it is received.
[0036]
According to the present invention, the operation of the artificial retina sensor specified by the identification signal can be continued for a predetermined time by the time counting of the monitoring means.
[0037]
  In the security system according to the next invention, the claim3In this invention, the monitoring means sends an activation signal to the second detection means determined by the tracking reference table and starts measuring a predetermined time, and after the predetermined time has elapsed, A stop signal for stopping the operation is transmitted, and the second detection means starts when receiving the start signal, and operates until the stop signal is received.
[0038]
According to the present invention, in the tracking operation, the operation of the artificial retina sensor specified by the identification signal can be continued for a predetermined time by the time counting of the monitoring means.
[0041]
  In the security system according to the next invention, in the security system for notifying an external monitoring center of an abnormality in the monitoring area caused by an unauthorized intruder or the like, the first detection means for detecting the abnormality and the first detection means By a plurality of composite detection means that has a second detection means that is activated in response to abnormality detection by the first detection means and detects the abnormality by a detection principle different from that of the first detection means, and a second detection means of the composite detection means And monitoring means for notifying the monitoring center of the occurrence of an abnormality in the monitoring area in response to an abnormality detection.Here, the composite detection means is provided with unique identification information, and transmits and receives a detection signal indicating the abnormality detection and an identification signal indicating the identification information via a common line. The identification signal is transmitted together with the detection signal output from the detection means, the monitoring means receives the identification signal, and selectively selects the second detection means of the composite detection means based on the received identification signal. An activation signal for activation is transmitted, and the second detection unit is activated when the composite detection unit receives the activation signal. Furthermore, the first detection means outputs a detection signal having a different intensity according to a distance between the first detection means and the detection target, a size of the detection target, or a temperature difference between the detection target and the surrounding environment, The monitoring means includes identification information of the composite detection means and the intensity indicated by the detection signal, and identification information of the composite detection means having a second detection means that is activated according to the intensity indicated by the identification information and the detection signal, A reference table showing the correspondence relationship is stored and the identification signal is received to identify the composite detection means detected by the first detection means, and to the composite detection means determined by the reference table Send activation signal.
[0042]
  According to this invention, the abnormality detection of the first detection means in the composite detection means verifies whether the abnormality detection is valid, and the first in the composite detection means and in the other composite detection means. The second detection means that can acquire detection data of a different type from the detection means is activated, and it is possible to notify the monitoring center that an abnormality has occurred through the monitoring device only when an abnormality is detected by the second detection means.Moreover, the identification signal for identifying the composite detection means can specify the composite detection means having the first detection means that has detected the abnormality, and can designate the second detection means to be activated. Furthermore, by using a reference table showing the relationship between the intensity of the detection signal of the first detection means in the composite detection means that operates preferentially and the second detection means in the other composite detection means to be activated, The second detection means in the other composite detection means can be selectively activated in accordance with the distance between the first detection means and the detection target.
[0051]
  In the security system according to the next invention, the claim7In the invention, the second detection means includes an artificial retina sensor that detects a moving object as the abnormality detection.
[0052]
According to the present invention, since the artificial retina sensor is used as the detection means for performing abnormality detection, it is possible to recognize a moving object and acquire a moving direction.
[0053]
  In the security system according to the next invention, the claim7In the invention, the second detection means has a moving object and an artificial retina sensor for detecting the moving direction as the abnormality detection, and when the moving object is detected, the moving direction of the moving object is detected together with the identification signal. A composite signal having an identification information of the composite detection unit and a movement direction indicated by the movement signal, and another second detection unit that is activated in accordance with the identification information and the movement direction. A tracking reference table showing a correspondence relationship between the identification information of the detection means and the identification information is stored, and by receiving the identification signal, the composite detection means having the second detection means that detects the moving object is specified, and The activation signal is transmitted to the composite detection means determined by the tracking reference table.
[0054]
According to the present invention, a moving object such as an intruder can be tracked and photographed by using the moving direction detection function of the artificial retina sensor.
[0055]
  In the security system according to the next invention, the claim8Or9In the invention, the composite detection means starts measuring the predetermined time in response to the abnormality detection by the first detection means and activates the artificial retina sensor, and after the predetermined time has elapsed, the operation of the artificial retina sensor It has a starting control part which stops.
[0056]
According to the present invention, in the artificial retina sensor, the activation control unit can continue the operation of the artificial retina sensor for a predetermined time.
[0057]
  In the security system according to the next invention, the claim7In this invention, the monitoring means identifies the composite detection means having the first detection means that has detected the abnormality by receiving the identification signal, and sends the activation signal to the composite detection means determined by the reference table. And the timing of a predetermined time is started, and after the lapse of the predetermined time, a stop signal for stopping the operation of the second detection means of the composite detection means is transmitted, and the second detection means is connected to the composite detection means. It starts when it receives the start signal, and operates until it receives the stop signal.
[0058]
According to this invention, it is possible to continue the operation of the artificial retina sensor in the composite detection means designated by the identification signal for a predetermined time by the time counting of the monitoring means.
[0059]
In the security system according to the next invention, the monitoring means sends an activation signal to the composite detection means determined by the tracking reference table and starts counting a predetermined time, and after the predetermined time has elapsed. , Transmitting a stop signal for stopping the operation of the second detection means, and the second detection means is activated when the composite detection means receives the start signal, and operates until the stop signal is received. It is characterized by doing.
[0060]
According to the present invention, in the tracking operation, the operation of the artificial retina sensor in the composite detection means designated by the identification signal can be continued for a predetermined time by the time counting of the monitoring means.
[0063]
  In the security system according to the next invention, the claim7In the invention, the first detection means includes a passive infrared sensor that senses a change in the amount of received infrared light as the abnormality detection.
[0064]
According to the present invention, since the passive infrared sensor is used as the detection means for detecting the abnormality, the change in the amount of received infrared light by the detection target can be detected, and the presence of the intruder can be recognized.
[0065]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a security system according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.
[0066]
Embodiment 1 FIG.
First, the security system according to Embodiment 1 will be described. FIG. 1 is an explanatory diagram illustrating a schematic configuration of a security system according to the first embodiment. As shown in FIG. 1, in the security system according to the first embodiment, in order to facilitate understanding of the operation, a space closed by a wall such as a room is set as a monitoring area 10, and an abnormality in the monitoring area 10 is detected. The case of detecting the will be described.
[0067]
In FIG. 1, the security system according to the first embodiment includes a plurality of sensors A1 to A6 and B1 to B6 provided in a monitoring area 10 and a different area (for example, a monitoring room) from the monitoring area 10. The monitoring device 12 is configured to include an installed monitoring device 12, and the monitoring device 12 is in an environment that can notify the remote monitoring center 14 of the occurrence of an abnormality through a communication line.
[0068]
Further, if necessary, security switching means for enabling or canceling the security status of the monitoring area 10 or other monitoring area is provided near the entrance of the monitoring area 10 or near the entrance of the building to which the monitoring area 10 belongs. May be.
[0069]
In particular, in the security system according to the first embodiment, a plurality of sensors having different detection principles can detect all abnormalities such as intruders and fires in the monitoring area 10 in consideration of the mutual detection possible range. Separately distributed. For example, as shown in FIG. 1, two types of sensors A1 to A6 and B1 to B6 are alternately arranged in a grid pattern. Here, including other embodiments to be described later, these sensors based on different detection principles will be described as the above-described passive sensor and artificial retina sensor, respectively. In FIG. 1, A1 to A6 are passive sensors, and B1 to B6 are artificial retina sensors.
[0070]
Further, the passive sensors A1 to A6 and the artificial retina sensors B1 to B6 are connected so as to send detection signals output by the respective abnormality detections to a common line. One end of the common line is connected to the monitoring device 12, and the detection signals output from the sensors A1 to A6 and B1 to B6 are guided to the monitoring device 12.
[0071]
Further, each sensor A1 to A6, B1 to B6 is given unique identification information (address, etc.), and each sensor A1 to A6 and B1 to B6 is identified with a detection signal when abnormality is detected. An identification signal indicating information is transmitted. Therefore, when the monitoring device 12 receives the detection signal through the common line, the monitoring device 12 can also identify the sensor from which the detection signal is transmitted by receiving the identification signal.
[0072]
In addition, one of the features of the security system according to the present invention is to always activate only one type of sensor among different types of sensors, and activate other types of sensors in response to the abnormality detection of this sensor, Only when the monitoring device 12 receives the detection of the abnormality of the latter sensor, it recognizes that a true abnormality has occurred, and notifies the monitoring center 14 to that effect.
[0073]
Therefore, in the above-described sensor, for example, the passive sensors A1 to A6 are always in an activated state, and a predetermined one of the artificial retina sensors B1 to B6 is selected according to a detection signal emitted from any of these passive sensors A1 to A6. Things start up. Note that “activation” means that the artificial retina sensor performs an abnormality detection operation or shifts to a state in which the abnormality detection operation by the artificial retina sensor is possible.
[0074]
Below, operation | movement of the security system which concerns on this Embodiment 1 is demonstrated. For example, if an intruder enters the detection range of the passive sensor A1, the passive sensor A1 determines that the temperature change in the detection range is due to the human body, and determines that there is an abnormality and sends the detection signal and the identification signal described above to the common line. Send it out. The sent detection signal and identification signal are received by the monitoring device 12, and the monitoring device 12 identifies the passive sensor that has detected the abnormality from the received identification signal.
[0075]
Here, the monitoring device 12 stores in advance a reference table indicating the relationship of which artificial retina sensor is activated for the passive sensor that has detected an abnormality, and is activated by referring to this reference table. An activation signal is sent to the artificial retina sensor. In particular, in this reference table, a plurality of artificial retina sensors that enable photographing within a range including the detection range of the passive sensor are associated with the passive sensor that has detected an abnormality.
[0076]
FIG. 2 is a diagram showing an example of a reference table used in the security system according to the first embodiment. Referring to FIG. 2, it is shown that the artificial retina sensors B1, B2, and B3 are activated in response to the abnormality detection of the passive sensor A1. Therefore, when the monitoring device 12 receives the detection signal of the passive sensor A1, the monitoring device 12 sends an activation signal indicating activation of the artificial retina sensor to the artificial retina sensors B1, B2, and B3.
[0077]
At this time, the monitoring device 12 transmits an identification signal indicating identification information of each of the artificial retina sensors B1, B2, and B3. Here, each of the artificial retina sensors B1 to B6 can transmit a detection signal and determine whether or not the activation signal transmitted together with the identification signal after receiving the identification signal is for itself. A transceiver is provided.
[0078]
Therefore, the artificial retina sensors B1, B2, and B3 can operate their own artificial retina LSI by receiving the activation signal, and can detect a moving object in the detection range. The artificial retina LSI normally recognizes a moving object by acquiring two continuous images and obtaining motion information from these images, and the processing is performed in a very short time. Therefore, when a moving object is detected and the size of the object is recognized as necessary and it is determined that there is an intruder, a detection signal indicating that fact is immediately sent to the monitoring device 12.
[0079]
At this time, an artificial retina sensor that has detected an abnormality may be identified by sending an identification signal in the same manner as the passive sensor described above. As a result, for example, a control signal for switching to the normal video camera mode is transmitted to the artificial retina sensor that has detected an abnormality, moving image data is acquired from the artificial retina sensor, and this is recorded on the monitoring device 12 side. It can also be set as the structure which can be performed. This is particularly useful when performing abnormality verification after occurrence of abnormality.
[0080]
When the monitoring device 12 receives the detection signal from any of the artificial retina sensors B1, B2, and B3, the monitoring device 12 recognizes that a true abnormality has occurred, and notifies the remote monitoring center 14 of that fact through a communication line. When this report is sent, the monitoring center 14 performs necessary measures such as contacting police and fire departments and other related organizations and dispatching guards.
[0081]
When the above-described security switching means is provided, the monitoring device 12 detects from the artificial retina sensor provided in the monitoring area only when the monitoring area is in the security state by the security switching means. In response to the signal, the monitoring center 14 can be notified that an abnormality has occurred. Further, the monitoring device 12 may transmit an activation signal to the artificial retina sensor only when the monitoring area is in the guard state by the guard switching means.
[0082]
As described above, according to the security system according to the first embodiment, the abnormality detection of the passive sensor that is the first sensor verifies whether the abnormality detection is valid, and the first sensor An artificial retina sensor, which is a second sensor that can acquire detection data of a different type from that of the sensor, is activated, and the monitoring center 14 is notified of the occurrence of an abnormality for the first time when an abnormality is detected by the second sensor. Therefore, it is possible to avoid false alarms only by the first sensor, and it is possible to obtain information that cannot be detected by the first sensor by the second sensor, and it is possible to obtain a more reliable abnormality with reduced false alarms. Detection is possible.
[0083]
Further, since the second sensor is activated as necessary by detecting the abnormality of the first sensor, power saving can be achieved. Furthermore, since the activated second sensor is selectively determined in consideration of the detection range of the first sensor based on the reference table of the monitoring device 12, further power saving and different types of sensors can be used. It is possible to prevent the detection range from being shifted due to. In particular, an artificial retina sensor usually requires an illumination unit such as an infrared LED that requires a relatively large amount of power to enable detection of a moving object in a dark place. It becomes.
[0084]
In addition, if identification information such as an address is given to each sensor according to a specific law, and other sensors that are activated by detecting an abnormality of a certain sensor are determined according to this specific law, the above-described reference table can be omitted. You can also. For example, the identification information may be (1, 1) to (n, m), one for information for identifying an arbitrary group and the other for information for identifying a sensor within the group. In addition, the activation signal may be transmitted to the sensor indicated by the identification information obtained as a result of increasing or decreasing the predetermined numerical range with respect to the identification information given to the sensor that has detected an abnormality, or the same for a plurality of sensors. Identification information may be given to activate sensors having the same identification information.
[0085]
Furthermore, in the above-described example, when the monitoring area is sufficiently bright for photographing, or in an environment in which sufficient power can be supplied at all times to sufficiently detect the moving object of the artificial retina sensor. In some cases, the first sensor that preferentially performs abnormality detection may be an artificial retina sensor, and the second sensor may be a passive sensor.
[0086]
Embodiment 2. FIG.
Next, a security system according to Embodiment 2 will be described. The security system according to Embodiment 2 does not need to provide identification information to each sensor and store a reference table in the monitoring device, and is a security section (hereinafter referred to as a security section) configured by a plurality of sensors connected to the same common line. The point that the second sensor described above is activated for each time) is different from the security system according to the first embodiment.
[0087]
FIG. 3 is an explanatory diagram showing a schematic configuration of the security system according to the second embodiment. In FIG. 3, different common lines are laid in two monitoring areas 31 and 32, and a plurality of first sensors and second sensors are connected to each common line.
[0088]
A feature of the security system according to the second embodiment is that the monitoring device 12 recognizes “abnormality” only after receiving a detection signal from the second sensor for each common line, that is, for each loop. For example, in the monitoring region 31 shown in FIG. 3, when an intruder enters the detection range of the passive sensor A11, the passive sensor A11 recognizes the intruder and sends a detection signal to the common line. This detection signal is directly received by the artificial retina sensors B11 and B12 connected to the same common line, and activates these artificial retina sensors B11 and B12.
[0089]
When the activated artificial retina sensors B11 and B12 detect a moving object in the respective detection ranges, the artificial retina sensors B11 and B12 transmit a detection signal indicating that fact to the monitoring device 34. Since the processing of the monitoring device 34 after receiving the detection signal of the artificial retina sensor as the second sensor is the same as that of the monitoring device 12 described in the first embodiment, the description thereof is omitted here. In the figure, the monitoring center 36 corresponds to the monitoring center 14 shown in FIG.
[0090]
Also in the monitoring area 32 shown in FIG. 3, the abnormality detection is achieved by the same operation as the monitoring area 31 described above. That is, the monitoring device 34 can recognize the occurrence of the abnormality in a loop unit distinguished for each common line without individually recognizing each sensor installed in each monitoring area.
[0091]
Therefore, when the monitoring device 34 receives the detection signal from the artificial retina sensor from the common line laid in the monitoring region 31, the monitoring device 34 recognizes the occurrence of the abnormality in the monitoring region 31 and the common device laid in the monitoring region 32. When a detection signal is received from the track by the artificial retina sensor, the occurrence of an abnormality in the monitoring area 32 is recognized.
[0092]
The monitoring device 34 may once receive a detection signal from the passive sensor generated from the same loop, and the monitoring device 34 may transmit an activation signal for starting the artificial retina sensor to the end of the loop. .
[0093]
As described above, according to the security system according to the second embodiment, the abnormality detection of the passive sensor that is the first sensor verifies whether the abnormality detection is valid, and the first sensor An artificial retina sensor, which is a second sensor that can acquire detection data of a different type from that of the sensor, is activated, and the monitoring center 14 is notified of the occurrence of an abnormality for the first time when an abnormality is detected by the second sensor. Therefore, it is possible to avoid false alarms only by the first sensor, and it is possible to obtain information that cannot be detected by the first sensor by the second sensor, and it is possible to obtain a more reliable abnormality with reduced false alarms. Detection is possible.
[0094]
Further, since the activation signal for activating the second sensor is directly transmitted to the second sensor connected to the same common line as the first sensor that has detected the abnormality, the monitoring device 34 is complicated. A highly reliable security system can be constructed with a simple configuration without requiring processing.
[0095]
Embodiment 3 FIG.
Next, a security system according to Embodiment 3 will be described. The security system according to the third embodiment is different from the first embodiment in that a composite sensor in which different types of individually installed sensors are enclosed in the same housing is used as a sensor to be installed in the monitoring area. The above-described identification information is given for each composite sensor.
[0096]
FIG. 4 is a diagram illustrating a configuration example of a composite sensor used in the security system according to the third embodiment. A composite sensor 40 shown in FIG. 4 includes a passive sensor 41, an artificial retina sensor (artificial retina sensor) 43, an illumination unit 45 for enabling the artificial retina sensor 43 to sufficiently detect a moving object in a dark place, and these A detection signal processing unit 47 that outputs a detection signal indicating “abnormality” according to the detection result of the sensor, an identification signal received from the common line (address input), and output from the detection signal processing unit 47 And a transmission / reception unit 49 for sending the detection signal to the common line.
[0097]
The artificial retina sensor 43 is activated directly by the detection result generated by the abnormality detection of the passive sensor 41 or when the transmission / reception unit 49 receives the identification signal indicating the composite sensor 40 and the activation signal of the artificial retina sensor. , Is to be launched.
[0098]
FIG. 5 is an explanatory diagram showing a schematic configuration of the security system according to the third embodiment. In FIG. 5, the security system according to the third embodiment includes a plurality of composite sensors C1 to C8 provided in the monitoring area 50 and a monitoring device 52 installed in a different area from the monitoring area 50. The monitoring device 52 is configured so that it can notify the remote monitoring center 54 of the occurrence of an abnormality through a communication line.
[0099]
If necessary, the above-described guard switching means may be provided near the entrance of the monitoring area 50 or near the entrance of the building to which the monitoring area 50 belongs.
[0100]
In the security system according to the third embodiment, a plurality of composite sensors in which sensors of different detection principles are enclosed in the same housing are installed in a distributed manner in consideration of the mutual detectable range. For example, as shown in FIG. 5, the composite sensors C1 to A8 are alternately arranged in a grid pattern. It is assumed that the composite sensors C1 to C8 are configured by combining a passive sensor and an artificial retina sensor as shown in FIG.
[0101]
The composite sensors C1 to C8 are connected to the common line as described above, and one end of the common line is connected to the monitoring device 52. The detection signals output from the composite sensors C1 to C8 are guided to the monitoring device 52.
[0102]
Furthermore, each of the composite sensors C1 to C8 is given unique identification information (address, etc.), and the composite sensors C1 to C8 send an identification signal indicating the identification information together with the detection signal when an abnormality is detected. To do. Therefore, when the monitoring device 52 receives the detection signal via the common line, the monitoring device 52 can also identify the composite signal from which the detection signal is transmitted by receiving the identification signal. .
[0103]
In particular, each passive sensor in each composite sensor C1 to C8 is always in an activated state, and an artificial retina sensor in the passive sensor is directly activated in response to a detection signal generated by these passive sensors.
[0104]
Below, operation | movement of the security system which concerns on this Embodiment 3 is demonstrated. For example, if an intruder enters the detection range of the passive sensor of the composite sensor C1, the passive sensor determines that the temperature change in the detection range is due to the human body, and determines that there is an “abnormality” in the artificial retina sensor in the same housing. On the other hand, an activation signal is input, and a detection signal by the passive sensor and the identification signal described above are sent to the common line. The sent detection signal and identification signal are received by the monitoring device 52, and the monitoring device 52 identifies the composite sensor that has transmitted these signals.
[0105]
Here, the monitoring device 52 stores in advance a reference table that indicates a relationship of which composite sensor to activate the artificial retina sensor with respect to the composite sensor including the passive sensor that has detected the abnormality. By referencing, an activation signal is transmitted to the composite sensor including the artificial retina sensor to be activated. In particular, in this reference table, a plurality of composite sensors that enable photographing within a range including the detection range of the passive sensor are associated with the passive sensor of the composite sensor that has detected an abnormality.
[0106]
FIG. 6 is a diagram illustrating an example of a reference table used in the security system according to the third embodiment. Referring to FIG. 6, it is shown that the artificial retina sensors of the composite sensors C2 and C3 are activated for detecting the abnormality of the passive sensor of the composite sensor C1. Therefore, when the monitoring device 52 receives the detection signal emitted from the composite sensor C1, the monitoring device 52 sends an activation signal indicating the activation of the artificial retina sensor included in these composite sensors to the composite sensors C2 and C3.
[0107]
Thereby, each artificial retina sensor of the composite sensors C2 and C3 can operate its own artificial retina LSI by receiving this activation signal, and can detect a moving object in the detection range. .
[0108]
When the monitoring device 52 receives a detection signal from the artificial retina sensor from either one of the composite sensors C2 and C3, the monitoring device 52 recognizes that a true abnormality has occurred, and notifies the remote monitoring center 54 through the communication line. When this notification is sent, the monitoring center 54 takes necessary measures such as contacting police and fire departments and other related organizations and dispatching guards.
[0109]
As described above, according to the security system according to the third embodiment, the abnormality detection of the passive sensor, which is the first sensor in the composite sensor, verifies whether the abnormality detection is valid, An artificial retinal sensor, which is a second sensor capable of acquiring different types of detection data from the first sensor in the same housing, is activated, and an abnormality occurs through the monitoring device 52 only when an abnormality is detected by the second sensor. Since the fact is notified to the monitoring center 54, it is possible to avoid misreporting only by the first sensor, and it is possible to obtain information that cannot be detected by the first sensor by the second sensor, and to prevent the misreporting. Reduced and more reliable abnormality detection becomes possible.
[0110]
Moreover, since the 2nd sensor in a composite sensor is started as needed by abnormality detection of the 1st sensor, it can aim at power saving. In particular, an artificial retina sensor usually requires an illumination unit such as an infrared LED that requires a relatively large amount of power to enable detection of a moving object in a dark place. It becomes.
[0111]
Furthermore, in the above-described example, when the monitoring area is sufficiently bright for photographing, or in an environment in which sufficient power can be supplied at all times to sufficiently detect the moving object of the artificial retina sensor. In some cases, the first sensor that preferentially performs abnormality detection in the composite sensor may be an artificial retina sensor, and the second sensor may be a passive sensor.
[0112]
In particular, since a composite sensor in which different types of sensors are enclosed in the same housing is used, power supply wiring and signal transmission wiring can be used in common, and wiring in the monitoring area can be easily installed. Can be.
[0113]
Embodiment 4 FIG.
Next, a security system according to Embodiment 4 will be described. In the security system according to the fourth embodiment, the composite sensor described in the third embodiment is applied to the loop configuration described in the second embodiment.
[0114]
FIG. 7 is an explanatory diagram showing a schematic configuration of a security system according to the fourth embodiment. In FIG. 7, different common lines are laid in two monitoring areas 71 and 72, and a plurality of the above-described composite sensors are connected to each common line.
[0115]
The security system according to the fourth embodiment is characterized in that the monitoring device 74 recognizes “abnormality” only after receiving a detection signal from the second sensor in the composite sensor for each common line, that is, for each loop. It is. For example, in the monitoring area 71 shown in FIG. 7, when an intruder enters the detection range of the passive sensor inside the composite sensor C11, the passive sensor recognizes the intruder and sends a detection signal to the common line. To do. The detection signals output from the composite sensor C11 are directly received by the composite sensors C12 to C14 connected to the same common line, and each artificial retina sensor in the composite sensors C12 to C14 is activated.
[0116]
When the artificial retina sensor activated in each of the composite sensors C12 to C14 detects a moving object in each detection range, it transmits a detection signal indicating that to the monitoring device 74. Since the processing of the monitoring device 74 after receiving the detection signal of the artificial retina sensor as the second sensor is the same as that of the monitoring device 12 described in the first embodiment, the description thereof is omitted here. In the figure, the monitoring center 76 corresponds to the monitoring center 14 shown in FIG.
[0117]
Also in the monitoring area 72 shown in FIG. 7, the abnormality detection is achieved by the same operation as the monitoring area 71 described above. That is, the monitoring device 74 can recognize the occurrence of the abnormality by the loop unit distinguished for each common line without individually recognizing each composite sensor installed in each monitoring area.
[0118]
Therefore, when the monitoring device 74 receives the detection signal from the artificial retina sensor inside the composite sensor from the common line laid in the monitoring area 71, the monitoring apparatus 74 recognizes the occurrence of the abnormality in the monitoring area 71 and enters the monitoring area 72. When a detection signal from the artificial retina sensor inside the composite sensor is received from the laid common line, the occurrence of an abnormality in the monitoring area 72 is recognized.
[0119]
Note that the monitoring device 74 once receives a detection signal from the passive sensor inside the composite sensor generated from within the same loop, and this monitoring device 74 activates the internal artificial retina sensor again to the composite sensor connected to the loop. An activation signal to be transmitted may be transmitted.
[0120]
As described above, according to the security system according to the fourth embodiment, the abnormality detection of the passive sensor, which is the first sensor inside the composite sensor, verifies whether the abnormality detection is valid, An artificial retina sensor, which is a second sensor capable of acquiring different types of detection data from the first sensor, is activated in the same, and an abnormality has occurred through the monitoring device 74 only when an abnormality is detected by the second sensor. Is reported to the monitoring center 76, so that misreporting by only the first sensor can be avoided, and information that cannot be detected by the first sensor can be obtained by the second sensor, thereby reducing the number of missed reports. This makes it possible to detect abnormalities with higher reliability.
[0121]
Further, the activation signal for activating the second sensor in the composite sensor is directly applied to the second sensor of the composite sensor connected to the same common line as the composite sensor having the first sensor that has detected the abnormality. Since it is transmitted, the monitoring device 74 does not require complicated processing, and a highly reliable security system can be constructed with a simple configuration.
[0122]
In particular, since a composite sensor in which different types of sensors are enclosed in the same housing is used, the power supply wiring and signal destination can be used in common, and the wiring in the monitoring area can be easily laid. Can do.
[0123]
Embodiment 5 FIG.
Next, a security system according to Embodiment 5 will be described. In the security system according to the fifth embodiment, in the security system according to the first to fourth embodiments, a timer function is provided in the illustrated artificial retina sensor or monitoring device, and observation of the monitoring region after detection by the passive sensor is more careful. It is a thing.
[0124]
As described above, since the passive sensor has a time lag in detecting the abnormality, it is assumed that no intruder or the like already exists in the same detection area after detecting the abnormality by the passive sensor. In this case, of course, notification to the monitoring center is not performed, and misreporting occurs.
[0125]
However, it is highly possible that the intruder or the like still lurks in the vicinity of the detection range of the passive sensor, and it is considered that the intruder enters the detection range again at a near time. On the other hand, the detection of the moving object of the artificial retina sensor is completed immediately only by acquiring two images. Therefore, in the fifth embodiment, the artificial retina sensor is provided with an activation control unit having a timer function or the like, and continuously detects a moving object within a predetermined time.
[0126]
FIG. 8 is a diagram illustrating a configuration example of an artificial retina sensor used in the security system according to the fifth embodiment. As shown in FIG. 8, in addition to the artificial retina sensor 83 and the illumination unit 85, an activation control unit 87 is provided. The activation control unit 87 starts measuring a predetermined time when receiving an activation signal from a monitoring device through a common line or when receiving an activation signal directly from a passive sensor in the same housing in the case of a composite sensor. Then, the operation of the artificial retina LSI is continued until the predetermined time elapses.
[0127]
Further, the timer function can be provided on the monitoring device side without providing the timer function in the artificial retina sensor. FIG. 9 is a flowchart showing the operation of the security system in this case. FIG. 9 shows a process when the timer function described above is applied particularly in the security system described in the third embodiment. First, when a predetermined temperature change is detected by the passive sensor inside the composite sensor, the activation control unit described above inputs an activation signal for activating its own artificial retina sensor (step S101).
[0128]
The activation control unit stores the “activation state” by inputting the activation signal (step S102), and operates its own artificial retina sensor while the storage of the “activation state” is maintained (step S103). ). On the other hand, the above-described passive sensor sends a detection signal and an identification signal indicating abnormality detection of the passive sensor to the monitoring device.
[0129]
The monitoring device that has received the detection signal identifies the composite sensor that has transmitted the detection signal, extracts the composite sensor to be activated based on the reference table, and transmits the activation signal to the other extracted composite sensors (step S104). The composite sensor that has received the activation signal stores the “activation state” by the activation control unit therein (step S105), and the memory of this “activation state” is maintained in the same manner as the compound sensor that has sensed the temperature change. While it is, the self-artificial retina sensor is activated (step S106).
[0130]
The monitoring apparatus starts measuring a predetermined time while receiving the detection signal (step S107). When this predetermined time has elapsed, the monitoring device transmits a stop signal for resetting the storage of the “activation state” in the activation control unit to the complex sensor that has sensed the temperature change and the complex sensor that has transmitted the activation signal. .
[0131]
Upon receiving the above stop signal, these composite sensors reset the “start state” in the start control unit (steps S108 and S110), and stop the operation of the artificial retina sensor (steps S109 and S111).
[0132]
As described above, according to the security system according to the fifth embodiment, in the artificial retina sensor or the monitoring device, the operation of the artificial retina sensor can be continued for a predetermined time by the activation control unit. Information can be avoided.
[0133]
Embodiment 6 FIG.
Next, a security system according to Embodiment 6 will be described. In the security system according to the sixth embodiment, in the security system according to the first or third embodiment, the first sensor that operates preferentially can recognize the distance to the detection target based on the intensity of the detection signal. By using a reference table that shows the relationship between the intensity of the detection signal and the second sensor to be activated, the selective activation of the second sensor is more efficient with respect to movement of an intruder or the like. It makes it possible to go high.
[0134]
Specifically, when the detection output of the passive sensor is large, the detection target is expected to exist in the vicinity of the passive sensor, so only the artificial retina sensor or the composite sensor located in the vicinity of the detected passive sensor is activated. . On the other hand, when the detection output of the passive sensor is small, the detection target is expected to exist at a position away from the passive sensor, so only the artificial retina sensor or the composite sensor located in a relatively wide range from the detected passive sensor. Start up.
[0135]
FIG. 10 is an explanatory diagram showing a schematic configuration of the security system according to the sixth embodiment.
FIG. 10 shows a configuration using the composite sensors C1 to C6 as sensors installed in the monitoring area 100, and is basically the same as FIG. Therefore, the monitoring device 102 and the monitoring center 104 correspond to the monitoring device 52 and the monitoring center 54 in FIG. 5, respectively. Here, it is assumed that the passive sensor of this composite sensor outputs the detection sensitivity in three stages (strong, medium, and weak).
[0136]
FIG. 11 is a diagram illustrating an example of a reference table used in the security system according to the sixth embodiment. Referring to FIG. 11, for example, when the passive sensor of the composite sensor C1 detects an abnormality and the detected intensity is “strong”, the artificial retina sensor of the composite sensor C1 itself is activated and the artificial retina of the composite sensor C2 is activated. The sensor is activated and it can be confirmed whether or not it is a true abnormality.
[0137]
Similarly, when the passive sensor of the composite sensor C1 detects an abnormality and the detection intensity is “medium”, the artificial retina sensor of the composite sensor C1 itself is activated and the artificial retina sensors of the composite sensors C2 and C4 are activated. When it is activated, it can be confirmed whether or not it is true abnormality. When the passive sensor of the composite sensor C1 detects abnormality and the detection intensity is “weak”, the artificial retina sensor of the composite sensor C1 itself is activated. At the same time, the artificial retina sensors of the composite sensors C2, C4, and C5 are activated, and it can be confirmed whether or not they are true abnormalities.
[0138]
Since the detection output of the passive sensor changes depending on the room temperature, the threshold value may be changed according to the room temperature.
[0139]
As described above, according to the security system according to the sixth embodiment, the reference table indicating the relationship between the intensity of the detection signal of the first sensor that operates preferentially and the second sensor to be activated is used. By doing so, the second sensor can be selectively activated in accordance with the distance between the first sensor and the detection target, so that more efficient abnormality detection can be performed with respect to movement of an intruder or the like. .
[0140]
Embodiment 7 FIG.
Next, a security system according to Embodiment 7 will be described. The security system according to the seventh embodiment is a security system according to the first or third embodiment, which can track an intruder or the like by using the function of detecting the moving direction of the artificial retina sensor. is there.
[0141]
FIG. 12 is an explanatory diagram showing a schematic configuration of the security system according to the seventh embodiment.
Here, since it is related to the interlocking between the artificial retina sensors, the passive sensor is not particularly described, but the first abnormality detection as a trigger is performed by the passive sensor as described above. In addition, the artificial retina sensor is assumed to detect abnormality in the visual field of 45 ° (= 90 °) on the left and right with respect to the direction indicated by the arrow in the figure.
[0142]
In FIG. 12, for example, when an intruder enters from the entrance of a building, the detection is performed by the composite sensor C7 or the composite sensor C8. Thereafter, when the composite sensor C7 detects that the composite sensors C9 and C10 have moved in the direction in which they are installed, the detection signal and the detected movement direction are transmitted to the monitoring device.
[0143]
The monitoring device transmits an activation signal to the composite sensors C9 and C10, and the detection operation by the composite sensors C9 and C10 is executed. Next, when the intruder is detected by the composite sensor C9 or C10 and it is detected that the intruder has moved to the entrance B or moved from the entrance B into the room, the detection signal and the detection are detected as described above. The moving direction is transmitted to the monitoring device.
[0144]
Then, the monitoring device detects an intruder by the composite sensor C4. When an intruder is detected, the composite sensors C5 and C6 are activated in the same procedure as before, and the intruder and its moving direction are detected. Here, the compound sensor C5 has detected an intruder and has moved to the left as viewed from the compound sensor C5, and the compound sensor C6 has detected an intruder and has moved to the right as viewed from the compound sensor C6. If it is detected and then the movement of the intruder is not detected, it can be assumed that the intruder is lurking near the X point.
[0145]
In order to enable tracking of these moving objects such as intruders, it is necessary to prepare a tracking reference table that associates the moving direction with the artificial retina sensor to be activated, in addition to the above-described reference table.
[0146]
As described above, according to the security system according to the seventh embodiment, by using the moving direction detection function of the artificial retina sensor, it is possible to track and photograph a moving object such as an intruder. When the presence of an intruder is detected, the intrusion runway is easily identified. In addition, when a police officer or guard arrives at the scene in response to a report of the occurrence of an abnormality, it is possible to determine whether the intruder is still in the building or has already escaped by checking this information. Furthermore, there is no risk of encountering an intruder without any intention and getting involved in an accident, and the safety of police officers and guards can be ensured.
[0147]
In order to confirm this information, register the names of the rooms and passages in the building in advance and display them in the order in which the intruder moved, or display the movement route on the floor plan of the building. This makes it easier to grasp the situation.
[0148]
In the above description, when the identification information unique to the passive sensor and the artificial retina sensor is used, radio may be used for transmission / reception of a detection signal, an identification signal, an activation signal, and the like.
[0149]
Furthermore, in the description of the above-described embodiment, the sensors having different detection principles have been described as the passive sensor and the artificial retina sensor, respectively, but the other second sensor is activated particularly by detecting the abnormality of the first sensor. Thus, other types of sensors can be used. For example, it can be replaced with a combination of a reflective infrared sensor and a normal monitoring camera, an ultrasonic sensor, an impact sensor, or the like.
[0150]
【The invention's effect】
  As described above, according to the present invention, it is possible to verify whether the abnormality detection is valid by detecting the abnormality of the first detection means, and to obtain detection data of a different type from the first detection means. The second detection means is activated, and it is possible to notify the monitoring center that an abnormality has occurred through the monitoring device for the first time by detecting the abnormality by the second detection means, so that misreporting only by the first detection means can be avoided. In addition, it is possible to obtain information that cannot be detected by the first detection means by the second detection means, and it is possible to detect anomalies with higher reliability with reduced false alarms.In addition, the identification signal can identify the first detection means that has detected an abnormality, and the second detection means to be activated can be specified. Therefore, the second detection means can be activated as necessary, thereby saving power. Can be achieved. Further, by using a reference table that shows the relationship between the intensity of the detection signal of the first detection means that operates preferentially and the second detection means to be activated, the distance between the first detection means and the detection target, detection Since the second detection means can be selectively activated according to the size of the target or the temperature difference between the detection target and the surrounding environment, it is possible to detect anomalies with higher efficiency against movement of an intruder or the like. be able to.
[0155]
According to the next invention, since the artificial retina sensor is used as the detecting means for detecting the abnormality, it is possible to recognize the moving object and acquire the moving direction.
[0156]
According to the next invention, a moving object such as an intruder can be tracked and photographed by using the moving direction detection function of the artificial retina sensor. The road can be easily identified.
[0157]
According to the next invention, in the artificial retina sensor, it becomes possible for the activation control unit to continue the operation of the artificial retina sensor for a predetermined period of time, so that a false alarm due to a difference in detection timing between different types of detection means is avoided. can do.
[0158]
According to the next invention, it is possible to continue the operation of the artificial retina sensor specified by the identification signal for a predetermined time by measuring the time of the monitoring means. Information can be avoided.
[0159]
According to the next invention, in the tracking operation, it is possible to continue the operation of the artificial retina sensor designated by the identification signal for a predetermined time by the time counting of the monitoring means, so that the detection timing between different types of detection means Misreporting due to deviation can be avoided.
[0161]
  According to the next invention, the abnormality detection of the first detection means in the composite detection means verifies whether the abnormality detection is valid, and the first detection means in the composite detection means and in the other composite detection means. The second detection means capable of acquiring detection data of a different type from the first detection means is activated, and it is possible to notify the monitoring center that an abnormality has occurred through the monitoring device only when an abnormality is detected by the second detection means. Therefore, it is possible to avoid misreporting only by the first detection means, and to obtain information that cannot be detected by the first detection means by the second detection means, and to detect anomalies with higher reliability with reduced false alarms. Is possible.In addition, the identification signal for identifying the composite detection means can identify the composite detection means having the first detection means that has detected the abnormality, and the second detection means to be activated can be specified. This can be performed as necessary, and power saving can be achieved. Furthermore, since the second detection means in the composite detection means can be activated as needed based on the reference table of the monitoring device by detecting the abnormality of the first detection means, a different type of detection means from the power saving It is possible to prevent the detection range from being shifted due to the gap.
[0166]
According to the next invention, since the artificial retina sensor is used as the detecting means for detecting the abnormality, it is possible to recognize the moving object and acquire the moving direction.
[0167]
According to the next invention, a moving object such as an intruder can be tracked and photographed by using the moving direction detection function of the artificial retina sensor. The road can be easily identified.
[0168]
According to the next invention, in the artificial retina sensor, it becomes possible for the activation control unit to continue the operation of the artificial retina sensor for a predetermined period of time, so that a false alarm due to a difference in detection timing between different types of detection means is avoided. can do.
[0169]
According to the next invention, it is possible to continue the operation of the artificial retina sensor in the composite detection means designated by the identification signal for a predetermined time by the time counting of the monitoring means, so that detection between different types of detection means is possible. Misreporting due to timing shifts can be avoided.
[0170]
In the tracking operation, it is possible to continue the operation of the artificial retinal sensor in the composite detection means designated by the identification signal for a predetermined time by the time counting of the monitoring means, so that the detection timing shift between different types of detection means Misreporting due to can be avoided.
[0172]
According to the next invention, since the passive infrared sensor is used as the detecting means for detecting the abnormality, a change in the amount of received infrared light by the detection target can be detected, and the presence of an intruder can be recognized.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing a schematic configuration of a security system according to a first embodiment.
FIG. 2 is a diagram showing an example of a reference table used in the security system according to the first embodiment.
FIG. 3 is an explanatory diagram showing a schematic configuration of a security system according to a second embodiment.
4 is a diagram illustrating a configuration example of a composite sensor used in a security system according to Embodiment 3. FIG.
FIG. 5 is an explanatory diagram showing a schematic configuration of a security system according to a third embodiment.
6 is a diagram showing an example of a reference table used in the security system according to Embodiment 3. FIG.
7 is an explanatory diagram showing a schematic configuration of a security system according to a fourth embodiment. FIG.
FIG. 8 is a diagram illustrating a configuration example of an artificial retina sensor used in a security system according to a fifth embodiment.
FIG. 9 is a flowchart showing the operation of the security system according to the fifth embodiment.
FIG. 10 is an explanatory diagram showing a schematic configuration of a security system according to a sixth embodiment.
FIG. 11 is a diagram showing an example of a reference table used in the security system according to the sixth embodiment.
FIG. 12 is an explanatory diagram showing a schematic configuration of a security system according to a seventh embodiment.
[Explanation of symbols]
12, 34, 52, 74, 102 Monitoring device
14, 36, 54, 76, 104 Monitoring center
87 Start control unit
A1-A6, A11, A12, A21, A22 Passive sensor
B1-b6, B11, B12, B21, B22 Artificial retina sensor
C1-C10 compound sensor

Claims (13)

In a security system that notifies an external monitoring center of abnormalities in the monitoring area caused by unauthorized intruders,
At least one first detecting means for detecting the abnormality;
A plurality of second detection means that are activated in response to abnormality detection by the first detection means and that detect the abnormality according to a detection principle different from the first detection means;
Monitoring means for notifying the monitoring center of the occurrence of an abnormality in the monitoring area in response to the abnormality detection by the second detection means ,
Each of the first detection means and the second detection means is provided with unique identification information, and transmits and receives a detection signal indicating the abnormality detection and an identification signal indicating the identification information via a common line. age,
The first detection means transmits the identification signal together with the detection signal,
The monitoring means receives the identification signal, and transmits an activation signal for selectively activating the second detection means based on the received identification signal;
The second detection means is activated by receiving the activation signal,
Furthermore, the first detection means outputs a detection signal having a different intensity according to the distance between the first detection means and the detection target, the size of the detection target, or the temperature difference between the detection target and the surrounding environment,
Further, the monitoring means has a correspondence relationship between the identification information of the first detection means and the intensity indicated by the detection signal, and the identification information of the second detection means activated in accordance with the intensity indicated by the identification information and the detection signal. The first detection means that has detected an abnormality is transmitted and the activation signal is transmitted to the second detection means determined by the reference table. Features a security system. The security system according to claim 1, wherein the second detection unit includes an artificial retina sensor that detects a moving object as the abnormality detection. The second detection means has a moving object and an artificial retina sensor for detecting the moving direction as the abnormality detection, and when the moving object is detected, a moving signal indicating a moving direction of the moving object is detected together with the identification signal. The monitoring means transmits the correspondence between the identification information of the second detection means and the movement direction indicated by the movement signal, and the identification information of the other second detection means activated according to the identification information and the movement direction. The tracking reference table showing the relationship is stored, and the identification signal is received to identify the second detection means that has detected the moving object, and the second detection means determined by the tracking reference table The security system according to claim 1, wherein an activation signal is transmitted. The second detection means starts counting the predetermined time in response to the abnormality detection by the first detection means, activates the artificial retina sensor, and stops the operation of the artificial retina sensor after the predetermined time has elapsed. The security system according to claim 2 , further comprising an activation control unit. The monitoring unit receives the identification signal, identifies the first detection unit that has detected an abnormality, transmits the activation signal to the second detection unit determined by the reference table, and starts measuring a predetermined time. Then, after the lapse of the predetermined time, a stop signal for stopping the operation of the second detection means is transmitted, and the second detection means is started when the start signal is received and until the stop signal is received. The security system according to claim 1, which operates during The monitoring means sends an activation signal to the second detection means determined by the tracking reference table, starts measuring a predetermined time, and stops the operation of the second detection means after the predetermined time has elapsed. 4. The security system according to claim 3 , wherein a stop signal is transmitted, and the second detection unit starts when the start signal is received and operates until the stop signal is received. In a security system that notifies an external monitoring center of abnormalities in the monitoring area caused by unauthorized intruders,
A plurality of first detection means for detecting the abnormality and a second detection means that is activated in response to abnormality detection by the first detection means and detects the abnormality by a detection principle different from that of the first detection means. Combined detection means,
Monitoring means for notifying the monitoring center of the occurrence of abnormality in the monitoring area in response to abnormality detection by the second detection means of the composite detection means ,
The composite detection means is provided with unique identification information, and transmits and receives a detection signal indicating the abnormality detection and an identification signal indicating the identification information via a common line, from the first detection means. The identification signal is transmitted together with the output detection signal,
The monitoring unit receives the identification signal, and transmits an activation signal for selectively activating the second detection unit of the composite detection unit based on the received identification signal;
The second detection means is activated when the composite detection means receives the activation signal,
Furthermore, the first detection means outputs a detection signal having a different intensity according to a distance between the first detection means and the detection target, a size of the detection target, or a temperature difference between the detection target and the surrounding environment,
Furthermore, the monitoring means includes identification information of the composite detection means and the intensity indicated by the detection signal, and identification information of the composite detection means having a second detection means that is activated according to the intensity indicated by the identification information and the detection signal. And a reference table indicating the correspondence relationship between the first detection means and the composite detection means determined by the reference table. A security system , wherein the activation signal is transmitted to the security system. The security system according to claim 7, wherein the second detection unit includes an artificial retina sensor that detects a moving object as the abnormality detection. The second detection means has a moving object and an artificial retina sensor for detecting the moving direction as the abnormality detection, and when the moving object is detected, a moving signal indicating a moving direction of the moving object is detected together with the identification signal. The monitoring means transmits the identification information of the composite detection means and the movement direction indicated by the movement signal, and the identification of the composite detection means having another second detection means that is activated in accordance with the identification information and the movement direction. A tracking reference table showing a correspondence relationship with information is stored, and the identification signal is received to identify a composite detection means having a second detection means for detecting a moving object, and the tracking reference The security system according to claim 7, wherein the activation signal is transmitted to a composite detection unit determined by a table. The composite detection unit starts timing for a predetermined time in response to the abnormality detection by the first detection unit, starts the artificial retina sensor, and stops the operation of the artificial retina sensor after the predetermined time has elapsed. security system according to claim 8 or 9, wherein the control unit. The monitoring means receives the identification signal, identifies a composite detection means having a first detection means that has detected an abnormality, transmits the activation signal to the composite detection means determined by the reference table, and is predetermined. Time measurement is started, and after the predetermined time has elapsed, a stop signal for stopping the operation of the second detection unit of the composite detection unit is transmitted, and the second detection unit is configured so that the composite detection unit receives the start signal. 8. The security system according to claim 7, wherein the security system is activated when received and operates until the stop signal is received. The monitoring means sends a start signal to the composite detection means determined by the tracking reference table, starts measuring a predetermined time, and stops the operation of the second detection means after the predetermined time has elapsed. transmits a signal, the second detection means of claim 9, wherein the composite detection means is activated upon receiving said activation signal, characterized in that it operates until receiving the stop signal Security system. 8. The security system according to claim 7, wherein the first detection unit includes a passive infrared sensor that detects a change in the amount of received infrared light as the abnormality detection.

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