A method of partitioning

A defense area and camera technology, which is applied in anti-theft alarms, anti-theft alarm mechanical start-ups, instruments, etc., can solve the problems of light length error, insufficient precision, and incomplete coverage of the camera field of view, so as to reduce monitoring blind spots and improve linkage accuracy.

Inactive Publication Date: 2019-05-17
POTEVIO INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in environments with irregular terrain such as unevenness, curvature, etc., the field of view of a preset position of the camera will not cover a complete defense zone, resulting in many blind spots and incomplete coverage of the camera field of view.
And there is an error in obtaining the light length by tapping the electronic fence. The error range of the light length at each point is 25 meters, and the error range of a defense zone will be expanded to 50 meters, which will lead to insufficient accuracy.

Method used

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  • A method of partitioning
  • A method of partitioning
  • A method of partitioning

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Experimental program
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Effect test

Embodiment 1

[0027] Defense zone is an important concept in the security system. It associates basic sensor alarms with alarm handling devices, helping users to monitor and control the on-site situation conveniently and quickly. The division of defense zones directly affects the accuracy of alarm reporting and linkage control, so how to divide defense zones is very critical.

[0028] Therefore, the present invention provides a method for zone division, the flow diagram of which is as follows figure 1 shown, including:

[0029] Step 11, according to the error distance of the electronic fence fault point alarm, determine the fault occurrence probability corresponding to different fault tolerance distances;

[0030] Step 12, selecting the fault-tolerant distance under the predetermined probability of fault occurrence;

[0031] Step 13, according to the field of view of the camera defense zone, subtract the selected fault tolerance distance to obtain the straight line length of the camera de...

Embodiment 2

[0086] In order to see the accident point clearly, the present invention designs multi-channel video to capture scene images at the same time. A geo-fence fault point is covered by the prefab field of view of the main camera and the prefab field of view of two auxiliary cameras. The division of the camera defense zone and the way of rolling and crossing the view range of the camera defense zone are the same as those in the first embodiment. The difference is that three cameras can be linked for all-round surveillance. The specific method is as follows:

[0087] Step 51, establishing a mapping relationship between each camera defense zone and the prefabricated positions of the three cameras on the monitoring platform;

[0088] Among them, establishing the mapping relationship between each camera defense area and the prefabricated positions of the three cameras on the monitoring platform includes:

[0089] Starting from the starting point, measure the linear length of the ove...

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PUM

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Abstract

The invention discloses a defense area division method, which comprises steps: according to an alarming error distance for an electronic fence fault point, a fault occurrence probability corresponding to a different fault-tolerant distance is determined; a fault-tolerant distance under a predetermined fault occurrence probability is selected; according to a vision field of a camera defense area, the selected fault-tolerant distance is subtracted, and a linear length of the camera defense area is obtained; and with any position on the electronic fence as a starting point, the linear gap between two points on the electronic fence is sequentially and continuously measured to be equal to the linear length of the camera defense area, and the area between any two points on the electronic fence is as a divided camera defense area. By adopting the method of the invention, monitoring blind areas can be effectively reduced, and the linkage precision is improved.

Description

technical field [0001] The invention relates to the technology in the field of security protection, in particular to a method for dividing defense zones. Background technique [0002] Electronic fence refers to the establishment of an anti-intrusion electronic fence around the perimeter of the protected object based on physical fences and walls, using advanced Internet of Things sensing, detection technology and equipment, to prevent illegal activities such as overturning, destruction, theft, and occupation. Detection, deterrence and blocking, and linkage with the video surveillance system for review and evidence collection, play the role of pre-discovery, delaying intrusion, and post-event evidence collection. [0003] The monitoring system based on the electronic fence can effectively detect illegal intrusion, and can be applied to climate and landforms in complex environments. Once an alarm occurs, the alarm signal can be transmitted to the control center at the first tim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08B13/12H04N7/18
CPCG08B13/122H04N7/18
Inventor 胡田朱嘉鲁杨洋阴祖华杨旸徐景张武雄
Owner POTEVIO INFORMATION TECH CO LTD
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