CN111429681A - Comprehensive perimeter security system with infrared thermal image verification and method - Google Patents

Abstract

The invention discloses a comprehensive perimeter security system and method with infrared thermal image verification. Compared with the existing security system, the security system is additionally provided with an image acquisition device and an image recognition unit, and is used for the alarm of the infrared radiation device. The signal is confirmed and verified. Only after the verification is successful, the controller will control the alarm to give an alarm. At this time, the error of the infrared device caused by the external environmental influence such as fallen leaves or rain and snow mentioned in the background can be effectively solved. The problem of high alarm rate; the security method is completed based on the above security system, and has the advantages of simple method, strong operability, and high alarm accuracy.

Description

Comprehensive perimeter security system and method with infrared thermal image verification

technical field

The invention discloses and relates to the technical field of comprehensive perimeter defense, in particular to a comprehensive perimeter security system and method with infrared thermal image verification.

Background technique

With the development of Chinese society and the continuous improvement of people's living standards, people's awareness and demand for security technology prevention are gradually increasing. As a modern perimeter security technology, it has been widely used in the perimeter defense of urban residential quarters, enterprises and institutions, and public buildings.

At present, the perimeter security mainly installs infrared radiation devices around the building, and uses the infrared radiation devices to detect the security area in real time. When an intruder is detected, an alarm signal will be sent to the console. Control the alarm to alarm.

Because the principle of infrared radiation device detection is: use the infrared rays emitted by infrared light-emitting diodes, and then focus on the optical lens, so that the light can be transmitted to a long distance, and finally the light is received by the phototransistor at the receiving end. When there is an object blocking the infrared rays emitted by the transmitting end, since the receiving end cannot receive infrared rays, an alarm will be issued. Therefore, based on the above-mentioned detection principle, the infrared radiation device is affected by the environment, and false alarms often occur. For example, if leaves or rain and snow fall in the security area, once the receiving end is blocked from receiving infrared rays, The shooting device will alarm, and there is a problem of high false alarm rate.

Therefore, how to develop a comprehensive perimeter security system and method to solve the above problems has become an urgent problem to be solved.

SUMMARY OF THE INVENTION

In view of this, the present disclosure provides a comprehensive perimeter security system and method with infrared thermal image verification, so as to solve the problem of high false alarm rate in the previous security system.

One aspect of the present invention provides a comprehensive perimeter security system with infrared thermal image verification, the security system comprising: a plurality of infrared radiation devices, a plurality of image acquisition devices, an image recognition unit, a controller and an alarm;

A plurality of the infrared radiation devices are respectively arranged at intervals along one side of the security perimeter;

A plurality of the image acquisition devices are respectively arranged at intervals at the security perimeter opposite to the infrared radiation device;

The image acquisition device corresponds to one or more of the infrared radiation devices, and each of the image acquisition devices can collect images in the detection security area of the corresponding one or more infrared radiation devices;

The input end of the image recognition unit is respectively connected with the output end of each of the image acquisition devices;

The input end of the controller is respectively connected to the output end of each of the infrared radiation devices and the output end of the image recognition unit, and the output end of the controller is respectively the control end of the image acquisition device and the output end of the image recognition unit. Alarm control terminal connection.

Preferably, each of the image acquisition devices includes: a PTZ and an infrared camera;

The infrared camera is fixedly installed on the pan/tilt, and both the control end of the pan/tilt and the control end of the infrared camera are connected to the output end of the controller;

The output end of the infrared camera is connected with the input end of the image recognition unit.

Further preferably, the security system further includes: a display; each of the image acquisition devices further includes: a visible light camera;

the visible light camera is fixedly installed on the pan/tilt, and the control end of the visible light camera is connected with the output end of the controller;

The input ends of the display are respectively connected with the output ends of the visible light cameras in each of the image acquisition devices.

Further preferably, the alarm is an audible and visual alarm.

Another aspect of the present invention also provides a comprehensive perimeter security method with infrared thermal image verification, the method is based on the above security system, and the security method includes the following steps:

Obtain the real-time detection result of each described infrared radiation device;

When the detection result is that there is an intrusion, start the image acquisition device to perform image acquisition in the security area, and acquire the acquired image;

Identifying image information in the collected images, and judging whether there is an intruder;

When there is an intruder, the alarm is controlled to give an alarm.

Preferably, the detection results include: presence of intrusion and absence of intrusion.

Further preferably, when the detection result is that there is an intrusion, the image acquisition device is activated to perform image acquisition in the security area, and the steps of acquiring and acquiring images are as follows:

When the detection result is that there is an intrusion, identifying the infrared opposite-radiation device corresponding to sending the intrusion signal;

According to the preset comparison table, the image acquisition device corresponding to the infrared cross-radiation device sending the intrusion signal is searched, and the corresponding image acquisition device is started to perform image acquisition in the security area to acquire the acquired image.

Further preferably, the preset comparison table is a correspondence table between the infrared radiation device and the image acquisition device, including: the image acquisition device number and angle corresponding to each of the infrared radiation devices.

Further preferably, when there is an intruder, the control of the alarm device to perform the alarming step further includes:

The image information in the captured image is sent to the display for display.

Compared with the existing security system, the comprehensive perimeter security system with infrared thermal image verification provided by the present invention is additionally provided with an image acquisition device and an image recognition unit. After the success, the controller controls the alarm device to give an alarm. At this time, the problem of the high false alarm rate of the infrared device caused by the external environmental influences such as fallen leaves, rain and snow mentioned in the background art can be effectively solved.

The comprehensive perimeter security method with infrared thermal image verification provided by the present invention is completed based on the above security system, and has the advantages of simple method, strong operability, and high alarm accuracy.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not intended to limit the disclosure of the present invention.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. In other words, other drawings can also be obtained based on these drawings without creative labor.

1 is a schematic diagram of a component module of a comprehensive perimeter security system with infrared thermal image verification provided by the disclosed embodiment of the present invention;

2 is a schematic diagram of a component module of an image acquisition device in a comprehensive perimeter security system with infrared thermal image verification provided by an embodiment of the present disclosure;

3 is a schematic flowchart of a comprehensive perimeter security method with infrared thermal image verification provided by an embodiment of the present disclosure;

FIG. 4 is a schematic flowchart of step S2 in the comprehensive perimeter security method with infrared thermal image verification provided by the disclosed embodiment of the present invention.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with some aspects of the invention as recited in the appended claims.

In order to solve the problem of high false alarm rate in the previous security system because of the simple installation of infrared radiation device without any verification device. This embodiment provides a comprehensive perimeter security system with infrared thermal image verification. Referring to FIG. 1, the security system includes: a plurality of infrared radiation devices 1, a plurality of image acquisition devices 2, an image recognition unit 3, a controller 4 and the alarm 5, wherein, a plurality of infrared radiation devices 1 are respectively arranged at intervals along the security perimeter of one side, and a plurality of image acquisition devices 2 are respectively arranged at intervals at the security perimeter opposite to the infrared radiation device 1, That is, the image acquisition device 2 is arranged opposite to the infrared radiation device 1, and the image acquisition device 2 corresponds to one or more infrared radiation devices 1, and each image acquisition device 2 can correspond to one or more infrared radiation devices. The image in the detection security area of 1 is collected, the input end of the image recognition unit 3 is respectively connected with the output end of each image acquisition device 2, the input end of the controller 4 is respectively connected with the output end of each infrared radiation device 1 and The output end of the image recognition unit 3 is connected, and the output end of the controller 5 is respectively connected to the control end of the image acquisition device 2 and the control end of the alarm device 5 .

In the above-mentioned comprehensive perimeter security system with infrared thermal image verification, the function of secondary confirmation and verification is realized by setting up an image acquisition device and an image recognition unit to reduce the false alarm rate. The specific working process of the security system is: The anti-radiation devices are arranged at intervals along the security perimeter on one side, each infrared anti-radiation device corresponds to a part of the security area, and the entire security area is covered by a plurality of infrared anti-radiation devices, and the image acquisition device is set in the infrared anti-radiation device. The opposite side of the device is arranged at intervals along the security perimeter opposite to the infrared radiation device, wherein the image acquisition device corresponds to one or more infrared radiation devices, and the corresponding relationship refers to the security detection detected by each infrared radiation device. The corresponding image acquisition device can collect all the images in the security area. After the installation of the above-mentioned equipment is completed, after the security system is activated, the infrared radiation device is used as the first defense. When the infrared radiation device detects When there is an intrusion, it will send an alarm signal to the controller, and the controller will first identify the infrared radiation device corresponding to the alarm signal, then search for the image acquisition device corresponding to the infrared radiation device, and then start the corresponding image acquisition device for image acquisition. , the collected image will be sent to the image recognition unit for identification to confirm and verify whether there is an intruder. The intruder here is usually a person. If it is confirmed that there is an intruder, the image recognition unit will send a signal to the controller, and the controller will control the alarm to perform Alarm, indicating that there is an intrusion, otherwise it will not alarm to avoid a false alarm.

The above-mentioned image recognition unit adopts the existing module, which belongs to the existing technology, and has the same principle as the currently widely used infrared thermal imager. , otherwise it will not be sent.

In order to realize that the above security system can be used 24 hours a day and is not affected by natural climates such as high temperature, low temperature, strong light, dust, rain, snow, fog, frost, etc., as an improvement of the technical solution, referring to FIG. 2, the above embodiment The image acquisition device 2 is designed to be composed of a pan/tilt 21 and an infrared camera 22, wherein the infrared camera 22 is fixedly installed on the pan/tilt 21, and the control end of the pan/tilt 21 and the control end of the infrared camera 22 are both connected with the controller 4. The output end is connected, and the output end of the infrared camera 22 is connected with the input end of the image recognition unit 3 .

In the above-mentioned image acquisition device 2, the angle adjustment of the image acquisition device can be realized through the design of the pan/tilt 21, and the infrared camera 22 is used. Since the camera is based on the principle of infrared thermal imaging, the image acquisition is performed, and the influence of the external environment can be avoided. , can be used 24 hours a day.

At the same time, the use of infrared thermal imaging is more conducive to improving the readiness of intelligent analysis, which can make up for the shortcomings of traditional visible light cameras, adding temperature information when detecting and analyzing intruders, and then combining the built-in images for contour analysis, which can effectively It can remove leaves, birds and beasts and other interference factors that are obviously different from people.

In order to realize manual confirmation and further improve the reliability of the security system, as an improvement of the technical solution, referring to FIG. 1, the security system is also provided with a display 6, and referring to FIG. 2, each image acquisition device 2 is provided with There is a visible light camera 23, wherein the visible light camera 23 is fixedly installed on the pan/tilt 21, and the control end of the visible light camera 23 is connected with the output end of the controller 4, and the input end of the display 6 is respectively connected with the visible light camera in each image acquisition device 2. 23 output connections.

When the image recognition unit sends a signal to the controller to notify that there is an intrusion, the controller will control the corresponding visible light camera to start, take image capture, and send the captured image to the display for display in real time to achieve manual confirmation and further improve reliability. sex.

In order to improve the effect of the alarm, as an improvement of the technical solution, the alarm device 5 is selected as the sound and light alarm device.

This embodiment provides a comprehensive perimeter security method with infrared thermal image verification. The method is implemented based on the above security system. Referring to FIG. 3 , the security method includes the following steps:

S1: Obtain the real-time detection results of each infrared opposite-radiation device, wherein the detection results include: presence of intrusion and non-existence of intrusion;

S2: when the detection result is that there is an intrusion, start the image acquisition device to perform image acquisition in the security area, and acquire the acquired image;

S3: Identify the image information in the collected image, and determine whether there is an intruder;

S4: When there is an intruder, the alarm is controlled to give an alarm.

Referring to FIG. 4, the above step S2: when the detection result is that there is an intrusion, start the image acquisition device to perform image acquisition in the security area, and acquire the acquired image, specifically:

S301: when the detection result is that there is an intrusion, identify the infrared inter-radiation device corresponding to sending the intrusion signal;

S302 : Search for an image acquisition device corresponding to the infrared cross-beam device that sends the intrusion signal according to a preset comparison table, and start the corresponding image acquisition device to perform image acquisition in the security area to acquire the acquired image.

Wherein, the preset comparison table is a correspondence table between the infrared radiation device and the image acquisition device, including: the image acquisition device number and angle corresponding to each of the infrared radiation devices.

In step S4: when there is an intruder, the step of controlling the alarm device to perform an alarm further includes: sending the image information in the captured image to a display for display.

Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses or adaptations of the invention which follow the general principles of the invention and which include common knowledge or conventional techniques in the art not disclosed by the invention . The specification and examples are to be regarded as exemplary only, with the true scope and spirit of the invention being indicated by the following claims.

It should be understood that the present invention is not limited to what has been described above and that various modifications and changes may be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims (9)

1. The utility model provides a take infrared thermal image to verify synthesizes perimeter security protection system which characterized in that includes: the system comprises a plurality of infrared correlation devices (1), a plurality of image acquisition devices (2), an image identification unit (3), a controller (4) and an alarm (5);

the infrared correlation devices (1) are respectively arranged along the security perimeter at one side at intervals;

the image acquisition devices (2) are respectively arranged at intervals at the security perimeter opposite to the infrared correlation device (1);

the image acquisition devices (2) correspond to one or more infrared correlation devices (1), and each image acquisition device (2) can acquire images in the detection security area of the corresponding infrared correlation device (1);

the input end of the image identification unit (3) is respectively connected with the output end of each image acquisition device (2);

the input of controller (4) respectively with every the output of infrared correlation device (1) and the output of image recognition unit (3) is connected, the output of controller (5) respectively the control end of image acquisition device (2) and the control end of alarm (5) is connected.

2. The integrated perimeter security system with thermographic verification according to claim 1, wherein each of said image acquisition devices (2) comprises: a pan/tilt head (21) and an infrared camera (22);

the infrared camera (22) is fixedly arranged on the cradle head (21), and the control end of the cradle head (21) and the control end of the infrared camera (22) are both connected with the output end of the controller (4);

the output end of the infrared camera (22) is connected with the input end of the image recognition unit (3).

3. The integrated perimeter security system with thermographic validation of infrared properties of claim 2, wherein said security system further comprises: a display (6); each of the image acquisition devices (2) further comprises: a visible light camera (23);

the visible light camera (23) is fixedly arranged on the cloud deck (21), and the control end of the visible light camera (23) is connected with the output end of the controller (4);

the input end of the display (6) is respectively connected with the output end of the visible light camera (23) in each image acquisition device (2).

4. The integrated perimeter security system with thermographic verification according to claim 1, characterized in that said alarm (5) is an audible and visual alarm.

5. A comprehensive perimeter security method with infrared thermographic verification, which is based on the security system of claim 1, and is characterized in that the security method comprises the following steps:

acquiring a real-time detection result of each infrared correlation device;

when the intrusion exists in the detection result, starting an image acquisition device to acquire an image of the security area and acquiring an acquired image;

identifying image information in the acquired image and judging whether an invader exists or not;

and when the invader exists, controlling the alarm to give an alarm.

6. The comprehensive perimeter security method with infrared thermographic verification according to claim 5, wherein the detection results comprise: presence and absence of intrusion.

7. The comprehensive perimeter security method with the infrared thermographic verification function according to claim 5, wherein when the detection result is the intrusion, an image acquisition device is started to acquire images of the security area, and the step of acquiring the acquired images specifically comprises the following steps:

when the detection result is that the intrusion exists, identifying an infrared correlation device corresponding to the intrusion signal;

and searching an image acquisition device corresponding to the infrared correlation device for sending the intrusion signal according to a preset comparison table, starting the corresponding image acquisition device to acquire an image of the security area, and acquiring an acquired image.

8. The comprehensive perimeter security method with infrared thermographic verification according to claim 7, wherein the preset look-up table is a corresponding relationship table of an infrared correlation device and an image acquisition device, comprising: and the number and the angle of the image acquisition device corresponding to each infrared correlation device.

9. The integrated perimeter security method with thermographic validation of infrared objects as recited in claim 5, further comprising, after controlling the alarm to alarm when an intruder is present:

and sending the image information in the acquired image to a display for displaying.

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