WO2007015449A1

WO2007015449A1 - Intrusion detecting device

Info

Publication number: WO2007015449A1
Application number: PCT/JP2006/315123
Authority: WO
Inventors: Kenji Ichien; Masatoshi Tsuji
Original assignee: Optex Co., Ltd.
Priority date: 2005-08-02
Filing date: 2006-07-31
Publication date: 2007-02-08
Also published as: JP4061338B2; JP2007041785A

Abstract

The history of sensor-detected information is added over a predetermined time band including a reporting time by a detection history display circuit (10), to the image of a monitor area (VA), and is displayed in the screen of a monitor (6). By displaying the history to the reporting, therefore, a cause for the misreport can be easily grasped to reduce the number of unnecessary mobilizations. On the basis of the report information to be displayed in each of pieces of information by a report information display circuit (16), the cause for the misreport can be easily grasped. Thus, the sensitivities of a sensor (3) and a camera (1) can be adjusted easily and properly by a sensitivity adjustment control unit (21) thereby to reduce the unnecessary mobilizations for guards.

Description

Specification

Intrusion detection device

Technical field

TECHNICAL FIELD [0001] The present invention relates to an intrusion detection device that detects an illegally intruded object using a camera that captures a monitoring area and a sensor that detects the presence of an object, and more particularly to facilitating the understanding of the cause of the false alarm occurrence. .

Background art

[0002] This type of intrusion detection device is installed at a security site such as outdoors or indoors in buildings such as ordinary houses and factories, for example, and the camera constantly shoots the surveillance area, and illegally enters the surveillance area. When a sensor detects an intruding object and issues a notification, the captured image is transmitted to the monitoring station and displayed on the monitor screen. This device is used for security services, etc. in which the guards are active if there is a report. For example, passive infrared sensors (PIR sensors) and microwave radar sensors (MW sensors) are used as sensors.

[0003] In this case, the video image of the monitoring area is stored in the memory, and this video image is intermittently transmitted to the monitoring station. The surveillance station can watch this transmitted video and play it when an intruder worthy of guarding is not shown, or when the video recording before and after the alarm is transmitted. However, in the case where the video is reflected and the video is recorded, the video record itself is transmitted! ing. Also, when you are monitoring your home away from home, you will be guarded without making a phone call.

[0004] As an example of a conventional intrusion detection device, both a camera that captures a monitoring area and a sensor that detects the presence of an object are used, and a plurality of area blocks are superimposed and displayed on a monitor screen. Is known (for example, Japanese Patent No. 3278085).

[0005] By the way, even when there is a report as described above and the video at the time of the report is confirmed, there is often no need to actually put out a guard. For example, (1) small animals such as dogs and cats In the case of intermittently transmitted video, the instantaneous video at the time of passing is lost and cannot be confirmed. (2) Small animals such as birds pass immediately in front of the sensor at high speed. If the transmitted video does not show anything that is recognized as an illegal intruder, (3) the object (such as grass) in the background is shaken by the wind and is mistaken for an intruder by the sensor. Although it was detected, no illegal intruder was originally present and nothing was shown in the transmitted video. In these cases, since the cause cannot be clarified in the video at the time of the alarm, the guards are dispatched according to the above procedure despite the fact that it is a false alarm. For this reason, it was difficult to reduce unnecessary security operations, and there was a problem that the burden on the security company was heavy.

[0006] In order to clarify the cause of the false alarm occurrence at the monitoring station, it is time consuming and laborious to transmit all the images in the monitoring area stored in the memory one by one at the time of the alarm. The burden of becomes too large.

[0007] On the other hand, especially when there are not many intruders, but frequent reports occur, it is a false report due to sensor and camera sensitivity problems, and it is necessary to adjust these sensitivities appropriately. However, because the cause cannot be clearly grasped only with the alarm and the video at the time of the alarm, it is necessary to make adjustments after actually confirming the cause at the alert site, and as a result, unnecessary security dispatch cannot be reduced as a result. There was also a problem.

Disclosure of the invention

[0008] An object of the present invention is to provide an intrusion detection device with a detection history display function that solves the above-mentioned problems, makes it easy to grasp the cause of the occurrence of false alarms, and can reduce unnecessary guards. And

In order to achieve the above object, an intrusion detection apparatus according to one configuration of the present invention includes a camera for photographing a monitoring area and a sensor for detecting the presence of an object, and monitors an image of the monitoring area. On the screen of the monitor, and is issued based on the sensor detection information from the sensor that detected the illegally intruding object, and is added to the image of the monitoring area on the monitor screen. A detection history display circuit for displaying a history of the sensor detection information over a predetermined time period including the time of the alarm.

[0010] According to this configuration, the detection history display circuit covers a predetermined time period including the time of alarm. Since the history of sensor detection information is added to the video in the monitoring area and displayed on the monitor screen, the cause of the false alarm can be easily grasped by displaying the history leading to the alarm, reducing unnecessary security calls. be able to.

[0011] An intrusion detection device with a detection history display function, which is effective in other configurations of the present invention, includes a camera that captures a monitoring area and a sensor that detects the presence of an object, and displays an image of the monitoring area on a monitor screen. And at least one of the sensor detection information from the sensor that detected the illegally intruding object and the image detection information of the camera power, and the video of the monitoring area is displayed on the monitor screen. And a detection history display circuit for displaying the history of the sensor detection information and the image detection information over a predetermined time period including the time when the alarm is issued.

[0012] According to this configuration, since the history of sensor detection information and image detection (image sensing) information is added to the image of the monitoring area and displayed on the monitor screen over a predetermined time period including the time of the report, By displaying the history leading to the alert, the cause of the false alarm can be identified more easily, and unnecessary security operations can be reduced.

[0013] Preferably, a plurality of types of sensors are provided, and the sensor detection information is detection information from a plurality of types of sensors. The type of sensor depends on the detection line. Preferably, an object detection circuit for applying an object marker to the moving object displayed on the monitor screen is provided. In this case, since the moving state of the moving object can be easily grasped, the cause of the false alarm can be grasped more easily.

[0014] An intrusion detection device with a detection history display function that covers another configuration of the present invention includes a camera that captures a monitoring area and a sensor that detects the presence of an object, and monitors an image of the monitoring area. And is issued based on at least one of sensor detection information from a sensor that detects an illegally intruding object and image detection information of camera power. An alarm information display circuit for displaying at least one alarm frequency and detection level of at least one sensor and camera in the area block for each of a plurality of area blocks superimposed and displayed in advance on the video of the monitoring area; It is equipped with a sensitivity adjustment controller that adjusts the sensitivity of the sensor and camera based on the alarm information display in the area block. [0015] According to this configuration, the cause of the false alarm can be easily grasped based on the alarm information displayed in each area block by the alarm information display circuit.

In addition, the sensitivity adjustment control unit can easily and appropriately adjust the sensitivity of the sensor and the camera, and can reduce unnecessary security operations.

[0016] Preferably, a detection history display circuit that displays the history of the sensor detection information and the image detection information over a predetermined time period including the time of the notification in addition to the image of the monitoring area on the monitor screen. The sensitivity adjustment control unit adjusts sensor sensitivity based on the notification information display and sensor detection information and image detection information displayed by the detection history display circuit unit. In this case, the cause of the false alarm can be identified more easily based on the alarm information in the area block displayed for each area block and the display of the history leading to the alarm. Sensitivity can be adjusted more easily and appropriately.

[0017] Preferably, a plurality of types of sensors are provided, and the sensitivity adjustment control unit adjusts sensor sensitivity for each sensor.

Brief Description of Drawings

[0018] The present invention will be understood more clearly from the following description of preferred embodiments with reference to the accompanying drawings, in which: However, the embodiments and drawings are merely for illustration and description, and should not be used to define the scope of the present invention. The scope of the invention is determined by the appended claims (claims). In the accompanying drawings, the same component symbols in a plurality of drawings indicate the same parts.

FIG. 1 is a schematic perspective view showing an intrusion detection device according to a first embodiment of the present invention.

FIG. 2 is a block configuration diagram showing the intrusion detection device of FIG. 1.

FIG. 3 is a diagram showing a monitor screen.

FIG. 4 is a block configuration diagram showing an intrusion detection device according to a second embodiment of the present invention.

FIG. 5 is a diagram showing a monitor screen.

FIG. 6 is a diagram showing a configuration of a control switch.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a first embodiment of the present invention. FIG. 2 is a schematic perspective view showing an intrusion detection device with a detection history display function according to the embodiment, and FIG. 2 is a block configuration diagram thereof. As shown in Fig. 1, this device detects an object Q such as a human body that illegally intrudes into a predetermined security site outdoors or indoors in buildings such as ordinary houses and factories. At the location that faces, a power camera 1 that captures the surveillance area VA and a sensor 3 (3a, 3b) that detects the presence of the object Q in the surveillance area V are installed on the wall or pillar P of the building at the location. In this example, the monitoring area VA of the camera 1 is set wider than the monitoring area V of the sensor 3. Sensor 3 is based on the change in the amount of detection lines received from object Q when object Q moves within the multiple area blocks V0 to Vn set for monitoring area V. Is detected.

As shown in FIG. 2, this apparatus is entirely controlled by a control unit 8 composed of a microcomputer, for example, and displays an image of the monitoring area VA on the screen of the monitor 6 provided in the monitoring station 7. Based on the sensor detection information from the sensor 3 that detected the illegally entering object Q and the image detection information from the camera 1, the object Q should be notified to the monitoring station 7 when it meets the specified intrusion condition. It is controlled. In addition to the monitor 6, the monitoring station 7 is provided with a control switch 18, and the main unit A, excluding the monitoring station 7, is connected to the control station (operation unit) of the monitoring station 7 via the control unit 8. Remotely operated by 18.

[0021] The sensor 3 includes two types of sensors, for example, a passive infrared sensor (PIR sensor) 3a and a microwave sensor radar sensor (MW sensor) 3b. Sensor detection information is output via the signal processing circuits 4a and 4b. When the PIR sensor detects an object that emits infrared light above a certain amount, the MW sensor emits a microphone mouth wave and reflects the wave from the moving object, for example, the shape and speed of the moving object by using the Doppler effect. When is detected, a detection signal (sensor detection information) is output. In detection by the sensor 3, a notification is issued when the detection signal is above a predetermined level. The PIR sensor 3a and the MW sensor 3b are provided with sensitivity adjustment units 3as and 3bs, respectively (Fig. 4). These sensitivity adjustment units 3as and 3bs are, for example, sensitivity adjustment for manual adjustment and automatic adjustment. An automatic sensitivity setting unit (not shown) is provided, and is used in an example described later.

[0022] In addition, for example, a CCD camera is used as the camera 1, and a video signal from the CCD camera is used. The signal is subjected to predetermined signal processing such as amplification and addition of synchronization signals in the image processing circuit 2 installed indoors, and converted into an image signal that can be displayed on the monitor 6 screen. 5 and the image signal is intermittently output to the superimposing circuit 9. A video camera or the like may be used instead of the CCD camera. The camera 1 is also provided with a sensitivity adjustment unit Is (Fig. 4), and the sensitivity is adjusted by, for example, a mode switch based on a sensitivity table.

[0023] The object detection circuit 11 obtains image detection (image sensing) information by extracting a moving object of a certain size or more included in the image signal from the image processing circuit 2, and indicates the extracted moving object Image processing for outputting a block display position signal for displaying an object marker on the screen of the monitor 6, that is, image processing for motion detection, which is a well-known image processing technique, is performed. Specifically, when a certain amount or more (for example, a certain pulse or more) of the luminance signal included in the image signal changes by a certain width within a certain time, the luminance signal moves by a certain amount or more. This block is used to obtain image detection information by determining that it is caused by an object, and to display a motion detection block (not shown) consisting of an object marker such as a rectangular frame at the position of the moving object. The display position signal is output to the control unit 8 and the object marker display circuit 12. This image detection information includes not only the size and speed of the moving object, but also the moving direction. Detection by camera 1 is triggered when the luminance signal is above a predetermined level. When the block display position signal is input, the object marker display circuit 12 generates an object marker display signal and supplies it to the superposition circuit 9 via the display switching circuit 13. The object marker display circuit 12 may be omitted so that the object marker is not displayed.

[0024] The intrusion detection device according to the present invention adds the sensor detection information and the image over a predetermined time zone including the time of the alarm by adding to the image of the monitoring area VA on the screen of the monitor 6. A detection history display circuit 10 for displaying a history of detection information is provided. The detection history display circuit 10 displays a detection history based on the detection history display signal output from the control unit 8, and the detection history display circuit 10 will be described in detail below.

[0025] The control unit 8 detects the amount of received infrared light detected by the PIR sensor 3a, sensor detection information such as the shape size and speed of the moving object detected by the MW sensor 3b, and the camera 1 Based on the image detection (image sensing) information! It is determined whether the detected moving object is a force that is a trespasser, a small animal, or a simple swaying of a vegetation, and each detection history display signal is output. For example

These are classified into the following levels 1 to 4, and a moving object is determined and a detection history display signal is output. This detection history display signal is stored in the memory 14 and given from the control unit 8 to the detection history display circuit 10.

[0026] Level 1: There are sensor detection information and image detection information. V and misalignment were judged to be intruders when the intrusion conditions were met and reported.

Level 2: Although it can be determined that there is an intruding object based on the sensor detection information and image detection information, the alarm is not issued due to the reporting requirements.

Level 2 is, for example, the case where an intruding object has a small force size and can be regarded as a bird or a cat, or the speed is too fast to pass through the monitoring area and it is not necessary to report.

Level 3: Not considered as an intruding object with neither sensor detection information nor image detection information, but signal change is observed.

Level 3 is, for example, the case of background vegetation shaking, doors in the surveillance area, opening and closing of windows, and shaking of curtains.

Level 4: No signal change is observed!

[0027] The superimposing circuit 9 is adapted to display the image signal from the image processing circuit 2 via the display switching circuit 13 from the detection history display circuit 10 by a display selection operation in the control switch (operation unit) 18 (FIG. 5). By superimposing the supplied detection history display signal, the detection history is displayed in addition to the image of the monitoring area VA displayed on the screen of the monitor 6. This detection history is added to a video (not shown) of the monitoring area VA displayed on the screen of the monitor 6, as shown in FIG. History Displayed on one display 6H. In addition to the specific illustrations such as small animals (dogs) and vegetation in this example, this detection display mark has a figure such as ○, △, and mouth (color). (Including other) and symbols. For example, when the level 3 and level 2 are frequently generated and the level 1 is triggered by this detection history display, small animals gradually approach the camera and sensor, and the vegetation shakes gradually. Can be grasped as a cause of false alarms. In addition, the superimposing circuit 9 superimposes the object marker display signal supplied from the object marker display circuit 12 via the display switching circuit 13, and an object marker having a rectangular frame force is displayed on the screen image of the monitor 6. Since it is displayed in an overlapping manner, the moving state of the moving object can be easily grasped. A control switch (operating unit) 18 is also provided on the main unit A so that it can be operated by the main unit A.

The operation of the intrusion detection device having the above configuration will be described.

First, there is a report to the monitoring station 7 in FIG. At this time, the guards of the security company are not able to see anything on the screen of Monitor 6 because of the intermittent transmission. Therefore, the control switch 18 is operated to display the history display portion 6H on the screen of the monitor 6 and view the display portion. As shown in Fig. 3, detection marks for small animals (dogs) are inserted several seconds before and after the alarm, so this alarm can be judged as a false alarm. As a precaution, I made a call to the monitoring party but was absent. In this case, the guards are not guarded.

[0030] Thus, according to the present invention, the history of the sensor detection information and the image detection information is displayed on the screen of the monitor 6 by attaching it to the video of the monitoring area VA over a predetermined time period including the time of the alarm. As a result, the cause of the false alarm can be easily grasped by displaying the history leading to the alarm, and unnecessary guarding operations can be reduced.

In this embodiment, the alarm is issued based on the sensor detection information and the image detection information, and the history of both information is displayed. However, the alarm is issued only based on the sensor detection information, and only the sensor detection information is displayed. Let's display the history of.

Next, a second embodiment will be described. FIG. 4 is a block diagram showing an intrusion detection device according to the second embodiment of the present invention. Unlike the first embodiment, the second embodiment includes an area block display circuit 15, an alarm information display circuit 16, and a sensitivity adjustment control unit 21, and based on the alarm information display in the area block, the sensor 3 and camera Adjust the sensitivity of 1. Other configurations are the same as those in FIG. In the second embodiment, as shown in FIG. 4 only when the monitor 6 is installed in the monitoring station 7 of the monitoring company as in the first embodiment, the monitoring station 17 in the private house or factory is monitored. This includes cases where 6 is installed.

[0033] The area block display circuit 15 is superimposed on the image of the monitoring area VA on the screen of the monitor 6. Then, area blocks corresponding to the plurality of area blocks V0 to Vn set in the monitoring area V for each sensor 3 are displayed. The area block display signal is stored in the memory 14 and is supplied from the control unit 8 to the area block display circuit 15. The superimposing circuit 9 superimposes the area block display signal supplied from the area block display circuit 15 via the display switching circuit 13 on the image signal from the image processing circuit 2, thereby monitoring on the screen of the monitor 6. Area blocks with a rectangular frame force are superimposed on the image of area VA. Fig. 5 shows a state where, for example, an area block is superimposed on the image of the monitoring area VA for a PIR sensor.

[0034] For each area block displayed on the screen of the monitor 6, the notification information display circuit 16 displays the notification information of the detection frequency and detection level from each sensor 3 for each sensor 3, and the red or blue color. Change the display type to display power or color shading. This notification information display signal is stored in the memory 14 and is given from the control unit 8 to the notification information display circuit 15. In the same manner as described above, the notification information is superimposed and displayed on the video of the monitoring area VA on the screen of the monitor 6 by the superimposing circuit 9.

[0035] The sensitivity adjustment control unit 19 is provided in the control switch 18 in the monitoring station 17, and includes the notification information display and the sensor detection information or image detection information displayed by the detection history display circuit unit. Based on this, the sensitivity of sensor 3 and camera 1 is adjusted. When there are many false alarms due to detection by the PIR sensor 3a, MW sensor or camera 1, the sensitivity adjustment sections of the PIR sensor 3a, MW sensor 3b or camera 1 are each adjusted to lower the sensitivity.

As shown in FIG. 6, for example, manual switches for the PIR sensor 3a and the MW sensor 3b are provided in the control switch 18, and each control switch 18 has a sensitivity adjustment control unit (sensor sensitivity switching switch) 21. The display selection unit (display selection switch) 20 is provided. The display selection switch 20 switches between a history display for displaying the history information and a notification information display for displaying a notification frequency and a detection level. The sensor sensitivity switching switch 21 is a switch that adjusts the sensor sensitivity based on the alarm information. For example, the sensor sensitivity is switched in three stages: high sensor sensitivity (H), medium sensor sensitivity (M), and low sensor sensitivity (L). I do. A switch for adjusting the sensitivity of the force camera 1 (not shown) is also provided in the control switch 18 separately. Ma Also, install a control switch (operation unit) 18 in the device main unit A separately so that it can be operated by the device main unit A.

First, there is a report to the monitoring station in Figure 4. At this time, the guards of the security company see nothing in the monitoring area VA on the monitor 6 screen because of intermittent transmission. Therefore, the guard selects “history one display” with the display selection switch 20 of the control switch 18 and looks at the history one display section 6H on the screen of the monitor 6. There is a swaying mark in the grass a few seconds before and after the report. Next, when “Display alert information” is selected with the display selection switch 20, the alert frequency is high in the area block of grass in the video, so that the alert can be determined to be false. Thereafter, the sensitivity of the sensors 3a and 3b is lowered by the sensor sensitivity switching switch 21 of the control switch 18 via the sensitivity adjustment units 3as and 3bs. Finally, look at the history display section 6H on the monitor 6 screen to confirm that the false alarms have been reduced. Since the misinformation problem was solved in this way, the security guards are not dispatched.

[0038] Further, in the "report information display" of a specific area block displayed on the monitor 6, for example, when the report frequency of the PIR sensor 3a is large and the report frequency of the MW sensor 3b is small, the corresponding area block is displayed. This is considered to be a false alarm due to sudden sunlight entering the lock. In this case, only the sensitivity of the PIR sensor 3a is adjusted low, and the sensitivity of the MW sensor 3b is not adjusted. As a result, false alarms can be reduced, and security guards are not dispatched to adjust sensitivity.

[0039] Thus, according to the present invention, the cause of the report can be easily grasped based on the report information in the area block displayed for each of the plurality of area blocks. The sensitivity can be adjusted easily and appropriately, and unnecessary guarding can be reduced.

In this embodiment, the sensitivity adjustment of the sensor 3 and the camera 1 may be automatically performed based on the notification information in the area block, which is manually performed by the control switch 18.

[0041] Further, in this embodiment, the sensitivity is adjusted based on the notification information display and the sensor detection information or the image detection information! It may be adjusted. Further, it is not necessary to display the detection history and omit the force detection history display that adjusts the sensitivity based on the detection history, and the sensitivity adjustment based on this may not be performed. In each embodiment, two types of sensors, a passive infrared PIR sensor and an MW sensor, are used. Instead, an active infrared AIR sensor, an ultrasonic sensor, or the like is used. You can use more than two of these sensors.

[0043] Although the preferred embodiments have been described with reference to the drawings as described above, those skilled in the art will readily consider various changes and modifications within the obvious scope by looking at the present specification. Let's go. Accordingly, such changes and modifications are to be construed as within the scope of the present invention as defined by the appended claims.

Claims

The scope of the claims

[1] It is equipped with a camera that captures the surveillance area and a sensor that detects the presence of the object, displays the surveillance area image on the monitor screen, and based on sensor detection information from the sensor that detected the illegally intruded object. An intrusion detection device that reports

An intrusion detection device provided with a detection history display circuit for displaying a history of the sensor detection information over a predetermined time zone including the time of the notification in addition to the video of the monitoring area on the monitor screen.

[2] In claim 1,

Based on at least one of the sensor detection information of the sensor force and the image detection information of the camera force! /,

The intrusion detection device, wherein the detection history display circuit further displays a history of the image detection information.

[3] The intrusion detection device according to claim 1, wherein a plurality of types of sensors are provided, and the sensor detection information is detection information of a plurality of types of sensor forces.

[4] In claim 2, further,

An intrusion detection apparatus comprising an object detection circuit for applying an object marker to a moving object displayed on the monitor screen.

[5] In claim 2,

Displaying at least one of the detection frequency and the detection level of at least one of the sensors and cameras in the area block for each of a plurality of area blocks superimposed and displayed in advance on the monitor area image on the monitor screen. An alarm information display circuit, and a sensitivity adjustment control unit that adjusts the sensitivity of the sensor and the camera based on the alarm information display in the area block.

Intrusion detection device.

[6] In claim 5,

The sensitivity adjustment control unit is an intrusion detection device that adjusts the sensitivity of a sensor and a camera based on the notification information display and sensor detection information and image detection information displayed by the detection history display circuit unit. 6. The intrusion detection device according to claim 5, wherein a plurality of types of sensors are provided, and the sensitivity adjustment control unit adjusts sensor sensitivity for each sensor.