JP5964636B2 - Intrusion monitoring device - Google Patents

Description

  The present invention relates to an intrusion monitoring apparatus that has, as a security mode, a warning mode for performing abnormality determination based on an intruding object and a warning cancellation mode for temporarily releasing the warning, and monitors the intrusion of a suspicious person or the like into a monitoring area.

  2. Description of the Related Art Conventionally, there are provided intrusion monitoring devices that use a monitoring sensor as a monitoring area in a building or its surrounding area, detect the intrusion of a suspicious person or the presence of an obstacle using a monitoring sensor, and report an abnormality. In general, the intrusion monitoring apparatus is set to a warning mode in which monitoring is executed in a situation where warning is required, such as when the user is out, and in a situation where monitoring is not required, the warning release mode is set.

  When the user performs a switching operation from the warning release mode to the warning mode, the intrusion monitoring apparatus switches to the warning mode and starts monitoring processing on condition that all the monitoring sensors are in a normal state. On the other hand, if even one monitoring sensor detects an abnormal state, the subsequent monitoring process may not be performed properly, so the user is informed that it is in an abnormal state without switching to the warning mode. . For example, if an obstacle that blocks the visual field of the monitoring sensor is detected, the monitoring process is started by the user operating again after removing the obstacle and normalizing.

JP 2000-194866 A

However, the user may intentionally put his belongings in the monitoring area during the warning cancellation mode. For example, a situation may be considered in which an object to be taken out is only temporarily placed when going out. Even in such a case, if it is not possible to switch to the alert mode unless the detection object is removed, it cannot be said that the convenience for the user is good.
On the other hand, the object detected by the monitoring sensor at the start of monitoring is not necessarily an obstacle. For example, there may be a suspicious person who has entered the surveillance area during the alert release mode and is hiding. In this case, the act of the user directly confirming the detection factor of the monitoring sensor is dangerous because it may face a suspicious person.

As described above, in the conventional intrusion monitoring apparatus, whether or not to switch to the warning mode is uniformly determined regardless of the detection factor of the monitoring sensor, and thus the safety and convenience of the user are not considered.
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an intrusion monitoring apparatus that performs transition setting processing to a warning mode in consideration of user safety and convenience.

In order to achieve the above object, the intrusion monitoring apparatus of the present invention has at least a warning mode and a warning release mode as a security mode, and intrusions appearing in the monitoring area in the intrusion monitoring apparatus for monitoring an intruding object into the monitoring area. From the object detection means for detecting the position of the object and the intruding object, the abnormality determination means for performing abnormality determination according to the type of the detected intruding object during the warning mode, and the warning cancellation mode according to the switching instruction Means for setting the transition to the alert mode, and when the intruding object is detected, comprises a mode control means for determining whether or not the transition setting to the alert mode is permitted based on the type of the intruding object. It is characterized by that.
The importance of monitoring differs depending on the type of intruding object that is the target of abnormality determination. For example, a person is more important than a stationary object. In addition, the degree of risk varies depending on the type of person, such as a suspicious person who attempts to intrude a person illegally, a visitor such as home delivery, or a resident of a monitored house. According to this configuration, according to the type of the intruding object, the user is allowed to set the transition to the warning mode for the intruding object having a high degree of risk, and the transition setting is prohibited for the intruding object having the low degree of danger. Operation with high safety and convenience.

Further, in the above configuration, the object detection unit detects whether the intruding object is a person or an object other than a person, and the mode control unit detects that the detected intruding object is other than the person. When the object is the object, the setting for shifting to the warning mode is prohibited, and when the object is the person, the setting for shifting to the warning mode is permitted.
According to such a configuration, it is possible to identify whether the intruding object is a person or another object, and to allow the user to set the transition to the alert mode when there is a possibility of a suspicious person having a high risk level when checking the detection factor. However, since the transition setting is prohibited for an object having a low risk level, it is possible to realize an operation with high safety and convenience for the user.

In the above configuration, when a plurality of the intruding objects are detected, the mode control unit allows the setting to shift to the warning mode when the plurality of intruding objects include the person.
According to such a configuration, when a person is included in a plurality of detected intruding objects, the user's safety is prioritized and the setting to shift to the warning mode is not prohibited, so that the user's safety is high. Is possible.

Further, in the above configuration, the apparatus further includes object authentication means for determining whether or not the person is permitted to enter the monitoring area, and the mode control means receives an instruction to switch to the warning mode. When the unauthorized person is detected, the mode is forcibly set to the warning mode.
According to such a configuration, when a person other than the suspicious person is detected, the transition setting to the warning mode is allowed, and when there is a possibility of the suspicious person, the transition setting is prohibited. Highly convenient operation can be realized. Here, as an example of the object authentication unit, when the position of a portable authentication device such as a wireless tag carried by the user is detected, and the detected person's position substantially matches the position of the portable authentication device, the person Can be recognized as a permitted person.

In the above configuration, when the detected intruding object is an object other than the person, the mode control means determines whether or not to set the transition to the alert mode based on the position of the object in the monitoring area. judge.
According to this configuration, when an object other than a person is detected, if the object is in a position (important monitoring area) that has a large influence on intrusion monitoring, the setting for shifting to the warning mode is prohibited and the influence is small. Transition setting is allowed when in position (normal monitoring area). On the other hand, when a person is detected, the transition setting is allowed regardless of the position of the person. For this reason, it is possible to prevent in advance a situation in which subsequent intrusion monitoring cannot be appropriately performed by the object, and it is possible to realize a safe and highly convenient operation for the user. Here, the important monitoring area is an area where the importance of intrusion monitoring is relatively high, and corresponds to an area where the criterion of abnormality determination is lower than other areas, an area where the background is not updated during monitoring, and the like.

  The mode control means further includes an image acquisition means for acquiring an image of the surveillance area, a display means for displaying the image, and an operation means for accepting a confirmation operation by the user. When a person is detected at the time of receiving, an image may be displayed, and a transition to the alert mode may be set on condition that an input of a confirmation operation on the displayed image is a condition. According to such a configuration, in a situation where a person is present, the user can select whether to forcibly switch to the alert mode after confirming the image of the monitor area.

  According to the present invention, even if an intruding object is present in the monitoring area, it is not prohibited to set the warning mode uniformly, and whether to permit or not is determined in consideration of the risk corresponding to the type of the intruding object. Therefore, highly convenient operation can be realized while ensuring the safety of the user.

It is a schematic whole block diagram of the security system containing the monitoring system of this embodiment. It is a typical top view of the monitoring area where a monitoring system is installed. It is a block diagram which shows the schematic structure of the sensor terminal which comprises a monitoring system. It is a block diagram which shows the schematic structure of the monitoring apparatus which comprises a monitoring system. It is a general | schematic flowchart which shows the abnormality determination process in the monitoring process part. It is a general | schematic flowchart which shows the transfer setting process to the alert mode in a monitoring process part.

Embodiments of an intrusion monitoring apparatus according to the present invention will be described below with reference to the drawings.
FIG. 1 is a diagram showing a schematic overall configuration of a security system including a monitoring system 1 which is an intrusion monitoring apparatus according to the present invention. This security system includes a monitoring system 1, a communication network 2, and a security center 3.

  The monitoring system 1 is installed in a property to be monitored and monitors, for example, the site on the outer periphery of the building. More specifically, a detached house is a monitoring target, and a garden or approach corresponding to the site of the house is a monitoring area. The monitoring system 1 can also be applied to indoor monitoring, and entrance halls and lobbies of condominiums, office buildings, hotels, etc. can be used as monitoring areas.

  The monitoring system 1 mainly includes a monitoring device 4, a sensor terminal 5, and an operation indicator 6. The monitoring device 4 is connected to the sensor terminal 5 and the operation indicator 6 so that they can communicate with each other via wire or wirelessly. Is done. The monitoring device 4 is connected to the security center 3 via the communication network 2.

One or a plurality of sensor terminals 5 are installed in the property to be monitored, and detect an intruding object appearing in the monitoring area and its position. The monitoring system 1 uses a suspicious person who has entered the monitoring area or an obstacle that may hinder the detection of the suspicious person as an object of abnormality determination. Therefore, the sensor terminal 5 distinguishes and detects a person (moving object) that can constitute a suspicious person and a stationary object that can constitute an obstacle as an intruding object.
Moreover, for example, a wireless tag 7 is given to an authorized user of the property to be monitored as a portable authentication machine that can identify the user, and the user carries the wireless tag 7 in the monitoring area. . The sensor terminal 5 acquires a position by receiving a wireless signal emitted from the wireless tag 7.

The monitoring device 4 has, as a security mode, a warning mode that performs abnormality determination and a warning cancellation mode that does not perform abnormality determination. The security mode is set for each sensor terminal or for all sensor terminals at once by a user's setting operation. In addition, when switching the security mode to the security mode, the monitoring device 4 determines whether or not to set the transition to the security mode based on information on the intruding object detected in the monitoring area.
The monitoring device 4 integrally determines the detection results from the sensor terminal 5 during the warning mode, performs various abnormality determinations such as an intrusion abnormality due to detection of a suspicious person, an obstacle abnormality due to the presence of an obstacle, Based on the result, processing such as reporting an abnormality to the security center 3 is performed.

FIG. 2 is a schematic plan view of a monitoring area where the monitoring system 1 is installed.
The site on the outer periphery of the building 300 is set as a monitoring area. A boundary 302 to the outside of the site, such as a wall or a hedge, is provided on the outside of the site, and a site entrance / exit 304 is part of the boundary 302. The sensor terminal 5 is installed on the outer wall of the building 300, for example, and detects the persons 100 and 120 and the objects 120 and 140 that are intruding objects in the site, and also detects the position of each intruding object. Further, the wireless signal received from the wireless tag 7 carried by the person 100 is analyzed to calculate the position of the wireless tag, and the coincidence between the position of the person and the position of the wireless tag 7 is determined. Authenticates whether the user is carrying

The monitoring area in the site is classified into an important monitoring area 200 having a relatively high importance of monitoring including an area that can be an entrance to the building, such as the building entrance 306, and other normal monitoring areas 220. The normal monitoring area 220 and the important monitoring area 200 are handled differently in object determination processing, background update processing, abnormality determination processing, and mode setting processing described later.
The important monitoring area 200 preferably includes a visual field area from the sensor terminal 5 to the area so that a suspicious person in the area near the building entrance 306 can be reliably detected. Further, an area having a certain width from the outer wall of the building 300 may be used as the important monitoring area 200, or the important monitoring area 200 may be set at a location away from the building 300.

  The sensor terminal 5 collates the detected positions of the persons 100 and 120 with the position of the wireless tag 7 and performs an association process (link process) between the person and the wireless tag. If the intruding object is a person, the monitoring system 1 authenticates whether the user is an authorized user based on the result of the link process. In the example of FIG. 2, the person 100 and the wireless tag 7 are associated with each other and are not associated with the person 120. Then, the behavior of the suspicious candidate who is not authenticated is tracked, and when a predetermined prohibited action such as a staying action in the monitoring area or an intrusion action into the building is confirmed, an intrusion abnormality is determined. Further, if the intruding objects are objects 140 and 160 that are not humans, it is determined that the obstacle is abnormal if it is considered that the intrusion monitoring is hindered based on the size, position, and the like.

Next, the configuration and operation of the sensor terminal 5 will be described. FIG. 3 is a block diagram showing a schematic configuration of the sensor terminal 5.
The sensor terminal 5 includes a sensor unit 50, a reader unit 51, a camera 52, a notification unit 53, a LAN communication unit 54, a storage unit 55, and a sensor processing unit 56.

  The sensor unit 50 has a part of the function of detecting an intruding object in the monitoring area. In the present embodiment, a laser distance sensor is used as the sensor unit 50, the monitoring area is scanned with laser light, and the position of the object reflecting the laser light is detected. For example, a near-infrared laser light source having a wavelength of about 890 nm is provided, and laser pulses from the light source are sequentially projected over the entire monitoring area while changing the emission direction. The sensor unit 50 receives the laser pulse reflected by the object and generates distance measurement data up to the object. The scanning of the laser beam is repeated at a predetermined cycle (for example, 200 milliseconds) with respect to an angular range (for example, 180 ° in the horizontal direction) where the monitoring area is desired centering on the sensor unit. Ranging is performed using a time-of-flight method (TOF method: Time of Flight) every predetermined angle step (for example, 0.25 °). Specifically, the time required from the emission of a laser pulse to the reception of light is measured. Measure and calculate the distance to the object that reflected the laser beam from this time and the speed of light. The sensor unit 50 outputs the measurement distance for each scanning angle for one cycle to the sensor processing unit 56 as distance measurement data. In this way, the distance measurement data is represented by the scanning angle (azimuth) and distance, and the position of the object with the sensor terminal 5 as the viewpoint is given.

  The sensor unit 50 is not limited to the laser distance sensor described above, and can be similarly configured with, for example, a radar sensor that uses radio waves such as microwaves and millimeter waves, and an ultrasonic sensor (sonar sensor) that transmits and receives ultrasonic waves. It is. In addition, by using an image sensor to extract a person based on background differences and inter-frame differences, obtain the azimuth of the person from horizontal coordinates on the image, and estimate the distance to the person from the vertical coordinates by inverse perspective transformation. Ranging data can also be generated. In this case, the image sensor is installed so as to photograph the monitoring area from obliquely above.

The reader unit 51 is a tag reader that receives a wireless signal emitted from the wireless tag 7 and detects the wireless tag 7 existing in a predetermined detection range. The wireless tag 7 stores unique identification information (tag ID). When a question signal is received from the reader unit, a response signal including the tag ID is transmitted as a wireless signal. The reader unit 51 receives a response signal issued by the wireless tag in response to the question signal transmitted to the monitoring area, and extracts a tag ID for identifying the wireless tag 7 included in the response signal.
In the present embodiment, an RF-ID (Radio Frequency IDentification) technique is used as a wireless communication method between the reader unit 51 and the wireless tag 7, and a 900 MHz band suitable for relatively long-distance communication in light of monitoring applications. The UHF band such as, or the global frequency such as 2.4 GHz band can be used.

  The reader unit 51 has a part of a function for detecting the position information of the wireless tag 7. In the present embodiment, the sensor terminal 5 detects the direction in which the wireless tag 7 is present as viewed from the reader unit 51. As an example of a configuration for that purpose, the reader unit 51 includes a plurality of antennas each having a directivity with a relatively narrow beam width (for example, 10 °) and arranged with the beam directions (directivity angles) being shifted from each other. The interrogation signal is transmitted and the response signal is received while switching the plurality of antennas at regular time intervals. The reader unit 51 controls the directivity so as to be sequentially performed with respect to the angle range (for example, 180 °) of the detection target every predetermined period (for example, 200 milliseconds). Then, the reception intensity of the response signal from the wireless tag is acquired for each directivity angle, and tag detection data in which the reception intensity for each direction for one period is collected for each tag ID is output to the sensor processing unit 56. As described above, the tag detection data represents the azimuth distribution of the reception intensity for each wireless tag.

  For the link process in the monitoring device 4 to be described later, the reader unit and the sensor unit are arranged in the vicinity so that the respective visual axes substantially coincide, and the scanning angle of the sensor unit 50 and the directivity angle of the reader unit 51 are set. That is, the angle (azimuth) in the distance measurement data and the angle (azimuth) in the tag detection data are adjusted in advance so that they can be expressed in a common coordinate system. Preferably, the sensor unit 50 and the reader unit 51 are arranged in the same casing.

The camera 52 captures a monitoring area that is a detection range of the sensor unit 50 and acquires an image. For example, an image signal is generated using a CCD image sensor or the like. An image photographed by the camera 52 is transmitted to the security center 3 when an abnormality occurs and used for abnormality confirmation. In addition, it is used as an image for the user to check the status of the monitoring area in the status check at the start of monitoring described later.
The notification unit 53 is a speaker or the like that outputs an alarm in response to an instruction from the monitoring device 4 when an abnormality is determined by the monitoring device 4.
The LAN communication unit 54 is a communication interface with the monitoring device 4.

  The storage unit 55 stores various programs executed by the sensor processing unit 56 and necessary data. In particular, the storage unit 55 can update the registered tag data, which is the tag ID of the wireless tag 7 given to the user, or the distance measurement data acquired by the sensor unit 50 in the absence of an intruding object as background reference data. To remember. In addition, the image captured by the camera 52 under the control of the sensor processing unit 56 and the currently set security mode received from the monitoring device are stored. Furthermore, the storage unit 55 stores the range of the important monitoring area and the range of the normal monitoring area that constitute the monitoring area. The range of the monitoring area is expressed in a two-dimensional coordinate system, and can correspond to the position and orientation indicated in the distance measurement data and tag detection data.

  The sensor processing unit 56 is configured using a microprocessor or the like, and processes object detection processing 510 that processes distance measurement data from the sensor unit 50 and tag detection data from the reader unit according to a program in the storage unit 55. A tag detection process 520, an object determination process 530 for identifying and determining an intruding object, and a background update process 540 for updating background reference data are executed.

  In the object detection processing 510, the distance measurement data input from the sensor unit 50 is compared with the background reference data in the storage unit 55, and the distance is equal to the extent indicating the same object, and the distance from the background reference data A set of scanning angles (distance change group) in which a change occurs more than a predetermined value is extracted as an intruding object candidate. Further, the azimuth and distance at which the intruding object candidate is detected are recognized as the position where the intruding object candidate exists. If a plurality of intruding object candidates are detected in the distance measurement data, the position is obtained for each of them.

  In the tag detection process 520, it is determined whether the tag ID included in the tag detection data input from the reader unit 51 is the tag ID of the wireless tag 7 registered in advance with reference to the registered tag data in the storage unit 55. In the case of a registered tag ID, the azimuth distribution of received intensity is analyzed, and the peak directional angle with the highest received intensity is obtained as the detected azimuth of the wireless tag 7.

  In the object determination processing 530, based on the size and position of the extracted intruding object candidate, it is identified whether the object is an intruding object to be detected, that is, a person or an object other than a person that did not exist in the background. For example, when the actual size estimated from the distance and angle range indicating the intruding object candidate is human-like and the position moves more than a certain distance, the sensor processing unit 56 Is recognized as a person. On the other hand, if the estimated size is larger than the person or the position does not change over a certain time, it is recognized as an object other than a person. Further, the criterion for determining an intruding object is different depending on whether the detection position of the intruding object candidate belongs to the normal monitoring area or the important monitoring area. For example, in the person determination in the important monitoring area, the determination criterion of the moving distance is made smaller than that in the normal monitoring area, or the determination is made only by estimating the size without making the movement a condition. Further, in the object determination in the important monitoring area, the determination is made by shortening the stationary determination time or by only estimating the size without using the stationary time as a condition.

In the object determination process 530, a link process between the detected intruding object and the wireless tag 7 is performed to determine the presence or absence of a link. When the intruding object is recognized as a person, the sensor processing unit 56 determines the coincidence between the detection direction of the person and the detection direction of the wireless tag 7, and if the direction error is within the reference, the person is determined to be the wireless tag. 7 is assumed to be carried and associated (with link).
The type of the intruding object is categorized according to the importance (risk level) as the monitoring target. In this embodiment, the person is distinguished from the object, and the person is treated as an intruding object having a higher degree of danger than the object. However, the type of the intruding object is not limited to this. For example, the degree of risk varies depending on the type of person, such as a suspicious person who attempts to intrude into a person, a visitor such as home delivery, or a resident of a monitored house. In addition, the degree of risk varies depending on the mode of suspicious candidate.

  The sensor processing unit 56 transmits detection information that is a result of the object determination processing 530 to the monitoring device 4. The detection information includes information that associates the position and type of the intruding object (person or object) and the presence / absence of a link with the wireless tag for each intruding object. In addition, when the currently set security mode is the security mode, the sensor processing unit 56 transmits the image captured by the camera 52 together with the detection information to the monitoring device 4 when a person without a link with the wireless tag 7 is detected. In addition, the captured images for a certain period thereafter are accumulated and stored in the storage unit 55, and the accumulated captured images are sent in response to a request instruction from the monitoring process 4.

In the background update process 540, the background reference data in the storage unit 55 is updated as needed with the distance measurement data acquired by the sensor unit 50. When the sensor processing unit 56 detects that only a stationary object is detected in the monitoring area and the stationary object exists in the normal monitoring area for a predetermined update reference time (for example, 30 seconds), The background reference data is updated to capture the stationary object in the background. At this time, the entire background reference data representing the entire monitoring area is not updated, and only the portion corresponding to the normal monitoring area in the background associate data is updated. This background update process is executed while the alert mode is set, and is not performed during the alert release mode. This is because it is assumed that the user moves objects in the site or temporarily puts belongings during the warning release mode, and the background reference data is updated unnecessarily, so that intrusion monitoring can be performed appropriately. This is to prevent disappearance.
Further, the sensor processing unit 56 updates the background reference data with the distance measurement data acquired by the sensor unit 50 at a predetermined timing based on an instruction from the monitoring device 4 (temporary update).

Next, the configuration of the monitoring device 4 will be described with reference to FIG. FIG. 4 is a block diagram illustrating a schematic configuration of the monitoring device 4.
The monitoring device 4 includes a LAN communication unit 40, a notification unit 41, an operation unit 42, a display unit 43, a storage unit 44, and a monitoring processing unit 45.
The LAN communication unit 40 is a communication interface with the sensor terminal 5.
The reporting unit 41 is a communication interface with the security center 3 via the communication network 2.

  The operation unit 42 and the display unit 43 are operation / display interfaces for the user to set the security mode of the monitoring system 1, and include various operation buttons, a liquid crystal display, a buzzer, an LED, and the like. Alternatively, the liquid crystal touch panel display may be integrated. In addition, the display unit 43 notifies the user that the security mode has been switched or a status confirmation result at the start of monitoring described later.

The storage unit 44 includes a ROM, a RAM, and the like, and stores various programs executed by the monitoring device 4 and data necessary for the programs. The storage unit 44 stores area information 410 related to the monitoring area and detection history information 420 representing the detection status of the intruding object. The area information 410 includes information indicating the entire monitoring area, information indicating the range of the important monitoring area and the range of the normal monitoring area, the position of the entrance / exit of the site, the boundary position between the monitoring area and the building, and the like. Including. The detection history information 420 includes information indicating whether or not the sensor terminal 5 has detected an intruding object and the detected content. More specifically, the detected information received from the sensor terminal 5 is information that associates the position and type of the intruding object (person or object) and presence / absence of a link with the wireless tag 7 for each detected intruding object. And updated by the monitoring processor 45 based on the above.
Further, the storage unit 44 stores a security mode currently set in the monitoring system 1. When the security mode can be set for each sensor terminal 5, the security mode is stored in association with the terminal ID of the sensor terminal 5.

  The monitoring processing unit 45 is configured using a microprocessor or the like, and in accordance with a program stored in the storage unit 44, a tracking process 430 for tracking the detected intruding object, and an abnormality determining process 440 for determining an abnormality for the detected intruding object. Then, a mode setting process 450 for performing security mode switching control is executed.

  In the tracking process 430, the detection history information 420 in the storage unit 44 is updated based on the detection information periodically received from the sensor terminal 5. When the monitoring processing unit 45 receives the detection information including the information on the intruding object, the monitoring processing unit 45 refers to the detection history information 420, and adds the detection information on the intruding object when the intruding object detected this time is the intruding object being tracked. Update with that. If it is a new intruding object, the detection information is stored in the detection history information 420 as a new intruding object to be tracked. Further, if the detection information regarding the intruding object being tracked is not received for a certain period, the intruding object is considered to have moved out of the monitoring area and is deleted from the detection history information 420.

In the abnormality determination process 440, abnormality determination is performed based on the input detection information, the stored detection history information 420, and area information 410. Details of the abnormality determination processing 440 will be described with reference to FIG.
FIG. 5 is a schematic flowchart showing abnormality determination processing in the monitoring processing unit. The monitoring processor 45 executes this process every time detection information is received from the sensor terminal 5. First, the monitoring processor 45 updates the detection history information 420 in the storage unit 44 based on the received detection information (step S602). Next, it is determined whether the currently set security mode is a warning mode or a warning release mode (step S604). If it is the alert release mode, it is not necessary to make an abnormality determination, and thus this process is terminated. When in the alert mode, the detection history information 420 of the storage unit 44 is read (step S606), and it is determined whether or not the intruding object being tracked is in an abnormal state that satisfies the criteria for abnormality determination (steps S608 to S620).

  When determining the abnormal state, the monitoring processing unit 45 refers to the detection history information 420 to check whether there is an intruding object being tracked (step S608). If there is an intruding object being tracked, it is determined whether each intruding object is a person or a stationary object (step S610). For the person being tracked, it is determined whether or not the person is a specific action by the suspicious person based on the movement history (position change) of the person and the presence / absence of a link with the wireless tag 7 (step S612). For example, if it is detected that a person without a link has stayed in the monitoring area for a certain period of time, or a person without a link has entered the monitoring area from a position other than the entrance / exit of the site, it is determined as a specific action by a suspicious person. Then, the outer periphery intrusion abnormality is determined. Even if the person being tracked is no longer detected in the surveillance area, if a person without a link disappears at the boundary with the building, it can be regarded as an intrusion into the building. It is determined that the behavior is specific and the building intrusion abnormality is determined.

  If it is determined that there is an intrusion abnormality, the monitoring processing unit 45 notifies the security center 3 that an intrusion abnormality has occurred (step S614). At this time, an image transmission is requested to the sensor terminal 5 that has detected the abnormality target person, and the acquired abnormal image is transmitted to the security center 3 simultaneously with the abnormality notification or after the abnormality notification. Further, in response to a request from the security center 3, an accumulated image is acquired from the sensor terminal 5 and transmitted to the security center 3.

  On the other hand, when there is a stationary object being tracked in the detection history information 420, the monitoring processing unit 45 determines whether or not the object is an obstacle that affects intrusion monitoring. The monitoring processing unit 45 determines whether or not the position of the detected object is included in the important monitoring area, and if it is in the important area, the obstacle abnormality is determined (step S616). If the object is in the normal monitoring area, the size of the object is compared with a predetermined shielding standard.If the object size is smaller than the shielding standard, the obstacle is not abnormal. Confirm (step S618).

Even if the detected object is smaller than the shielding standard, the range that cannot be monitored becomes wide when a plurality of objects are detected, and therefore the total size of each object is compared with the shielding standard. Obstacle abnormality can be determined by changing the size of the object, by comparing the area of the blind spot area shielded by the object in the monitoring area with a predetermined standard, or by actually monitoring without obstruction. A method of comparing the area of the effective monitoring area with a predetermined standard may be adopted.
If it is determined that the obstacle is abnormal, the monitoring processing unit 45 notifies the security center 3 that the obstacle abnormality has occurred (step S620). Further, an abnormal image is transmitted to the security center 3 as in the case of an intrusion abnormality.

In the mode setting process 450, the security mode transition setting is performed according to the user's operation. In particular, at the time of switching from the warning release mode to the warning mode, it is confirmed whether or not the monitoring area is in a normal state where intrusion monitoring can be started, and whether or not the transition setting to the warning mode is permitted.
When a switching operation to the warning release mode is input via the operation unit 42 during the warning mode, the monitoring processing unit 45 sets the current security mode to the warning release mode and ends the intrusion monitoring. A transition instruction signal to the warning release mode is sent to the terminal 5. In addition, if it is a switching request | requirement per sensor terminal, the security mode of only the applicable sensor terminal will be changed. Here, in order to prevent the switch to the warning release mode from being performed by anyone other than a legitimate user, a means for inputting a personal identification number and biometric information and a means for reading the wireless tag 7 are provided in the operation unit, and the authenticated use is performed. Only the user's operation is accepted.

When a switching operation to the warning mode is input via the operation unit 42 during the warning release mode, the monitoring processing unit 45 checks whether the monitoring area is in a state suitable for intrusion monitoring and then enters the warning mode. Judgment of permission / inhibition of migration settings.
FIG. 6 is a schematic flowchart showing the transition setting process to the warning mode in the monitoring processing unit.

  When an operation for switching to the alert mode is input, the monitoring processing unit 45 refers to the detection history information 420 in the storage unit 44 (step S702), and whether the intruding object is detected in the monitoring area. It is confirmed whether or not (step S704). However, the intruding object here does not include a person with a link associated with the wireless tag 7. This is because an intrusion abnormality does not occur even if intrusion monitoring is started for an authorized person. If it is not in the detection state, the current security mode is set to shift to the warning mode to start intrusion monitoring, and a shift instruction signal to the warning mode is sent to the sensor terminal 5 (step S706).

  When an intruding object is detected in the monitoring area, the sensor terminal 5 is requested to transmit an image to acquire a confirmation image in which the intruding object is captured (step S708), and based on the detection history information 420, It is determined whether the detected object is an intruding object or an intruding object detected as an object (step S710). When a plurality of intruding objects are detected, it is determined as “person” if any intruding object indicating a person is present, and “object” is determined if all intruding objects indicating objects are present.

If an object is detected as an intruding object, it is subsequently determined whether the position of the object is included in the important monitoring area or the normal monitoring area (step S712).
If there is an object in the important area as in the object 140 of FIG. 2, the setting for shifting to the alert mode is disabled (step S714). Then, the display unit 43 is controlled to notify the user of the determination result indicating that the shift to the alert mode is impossible, and the acquired confirmation image is displayed on the operation display 6 (step S716). Here, the operation indicator 6 includes a means for displaying an image and a means capable of inputting a user's operation, and is constituted by, for example, a tablet terminal provided with a liquid crystal touch panel display. The user sees the confirmation image displayed on the operation display 6 and recognizes the obstacle of the unusable factor, removes this, etc., and then performs the switching operation to the warning mode again. As described above, since the obstacle in the important monitoring area has a great influence on the intrusion monitoring, the setting for shifting to the warning mode is prohibited.

  On the other hand, when an object exists in the normal monitoring area as in the object 160 of FIG. 2 (No in step S712), the determination result that the intruding object is detected by controlling the display unit 43 is sent to the user. In addition to the notification, the acquired confirmation image is displayed on the operation display 6 (step S718). Then, the current security mode is set to shift to the warning mode, intrusion monitoring is started, and a shift instruction signal to the warning mode is sent to the sensor terminal 5 (step S720). At this time, an update instruction signal for instructing temporary update of the background reference data is transmitted to the sensor terminal 5. Upon receiving the update instruction, the sensor terminal 5 updates the range corresponding to the normal monitoring area in the background reference data with the distance measurement data including the detected object.

  Instead of uniformly setting the transition to the alert mode, the transition setting may be permitted by a determination after the user confirms the image. In this case, the operation indicator 6 displays a confirmation operation button for forcibly setting the mode to the warning mode together with the confirmation image. The user visually recognizes the object detected from the confirmation image displayed on the operation display and either removes the obstacle and then switches to the warning mode again, or operates the confirmation operation button to force warning. Instruct to switch to mode, or selectable. When the confirmation operation button is operated, the monitoring processing unit 45 shifts to a warning mode and starts intrusion monitoring.

  As described above, since the obstacle in the normal monitoring area has a relatively small influence on the intrusion monitoring, priority is given to the convenience and the transition setting to the warning mode is permitted. Note that, even in the normal monitoring area, when the obstacle is larger than the shielding standard in the above-described obstacle abnormality, the setting for shifting to the warning mode may be prohibited similarly to the obstacle in the important monitoring area.

If the intruding object detected in the monitoring area is a person who does not carry the wireless tag, such as the person 120 in FIG. 2 (“person” in step S710), the intruding object is detected by controlling the display unit 43. In addition to notifying the user of the determination result to the effect, the acquired confirmation image is displayed on the operation display 6 (step S718). Then, the current security mode is set to shift to the warning mode, intrusion monitoring is started, and a shift instruction signal to the warning mode is sent to the sensor terminal (step S720).
In this way, when a person with a potential suspicious person is detected, it is dangerous for the user to come into direct contact with the person during normalization, so shifting to the alert mode giving priority to safety Force settings.

Instead of uniformly setting the transition to the alert mode, the transition setting may be permitted by a determination after the user confirms the image. In this case, the operation indicator 6 displays a confirmation operation button for forcibly setting the mode to the warning mode together with the confirmation image. When the user visually recognizes the person detected by the confirmation image displayed on the operation display and can clearly determine that the person is not a suspicious person, the user is not forced to shift to the warning mode and Change over to the alert mode again. On the other hand, when the possibility of a suspicious person cannot be denied, the confirmation operation button is operated to instruct to forcibly switch to the alert mode, and upon receiving this confirmation scan, the monitoring processing unit 45 sets the transition to the alert mode and performs intrusion monitoring. To start.
In addition, when intrusion monitoring is started for a plurality of sensor terminals 5, a transition mode is sequentially set to a warning mode from the sensor terminals whose normal state has been confirmed in the mode setting process.

  As described above, in the monitoring system of the present embodiment, the intruding object is detected in the monitoring area and the detected intruding object has a high risk level before the security mode is set to the guard mode. It is determined whether it is in a normal state where intrusion monitoring can be started depending on whether or not it is. Therefore, when an object with a relatively low risk such as an obstacle is detected, the transition to the alert mode is not set until the object is removed and normalized, and therefore appropriate intrusion monitoring can be performed. On the other hand, when a person with a high risk corresponding to the user is detected, the operation can be forcibly set to the warning mode, so that operation with priority on safety can be performed.

  In addition, in the transition setting process to the warning mode of the above-described embodiment, it is configured to perform the permission determination of the transition setting to the warning mode depending on whether the intruding object exists in the normal monitoring area or the important monitoring area. It can substitute by the structure which determines using the other method based on the detection position of an intruding object. For example, the distance between the detection position of the intruding object and the building to be monitored may be calculated, and it may be recognized as an intruding object having an influence on intrusion monitoring as long as it is less than a certain distance. Also, refer to the detection history information about the intruding object, exclude moving objects that came out of the building to be monitored, intruding objects that appeared from outside the monitoring area outside the monitoring area, and flying objects such as flying objects. Only intruding objects that appear without going through the outline may be extracted.

  Further, in the transition setting process to the warning mode of the above embodiment, when the detected intruding object is an object other than a person, the permission / inhibition of the transition setting to the warning mode is determined based on the position of the object. Alternatively, it may be configured to uniformly prohibit the migration setting. In this case, the monitoring system may handle the monitoring area uniformly without defining the important monitoring area and the normal monitoring area.

  In the above embodiment, a regular user is authenticated by determining the coincidence between the detection direction of the person and the detection direction of the wireless tag. However, the person authentication method is not limited to this. For example, it is good also as a structure which authenticates using an IC card or biometric information, when entering a monitoring area. Moreover, it may be configured to determine the coincidence between the detection position of the person and the detection position of the wireless tag instead of the coincidence of the detection direction with the wireless tag of the person. In this case, the detection position of the wireless tag can be calculated by calculating the distance to the wireless tag using the reception intensity of the response signal from the wireless tag and the time difference from the transmission of the inquiry signal to the reception of the response signal.

1 monitoring system 2 communication network 3 security center 4 monitoring device 5 sensor terminal 6 operation indicator 7 wireless tag

Claims (4)

In an intrusion monitoring device that has at least a warning mode and a warning release mode as a security mode, and monitors an intruding object to the monitoring area,
An intruding object appearing in the monitoring area and an object detecting means for detecting the position of the intruding object;
An abnormality determining means for performing an abnormality determination according to the type of the detected intruding object during the alert mode;
A means for setting transition from the alert release mode to the alert mode in response to a switching instruction, and whether or not the transition setting to the alert mode is permitted based on the type of the intruding object when the intruding object is detected and a determining mode control means,
The object detection means detects whether the intruding object is a person or an object other than a person,
When the detected intruding object is an object other than the person, the mode control means prohibits the setting to shift to the warning mode, and allows the setting to shift to the warning mode when the person is the person.
An intrusion monitoring device characterized by that. 2. The intrusion according to claim 1 , wherein when a plurality of the intruding objects are detected, the mode control unit allows the setting to shift to the alert mode when the plurality of intruding objects include the person. Monitoring device. Furthermore, it has an object authentication means for determining whether or not the person is permitted to enter the monitoring area,
Said mode control means, when the switching instruction to the alert mode is inputted, the person is not the authorized transitions set to forcibly the alert mode to have been detected, according to claim 1 or 2 Intrusion monitoring device. Said mode control means determines whether to transition configuration to the alert mode based on the position of the object in said monitoring area when the intruding object is the detected object other than the person, according to claim 1 The intrusion monitoring device according to any one of 3 to 3 .

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