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A target detection method and system

A target detection and target technology, applied in the field of laser detection, can solve problems such as difficult deployment and inability to measure the speed of intruding objects

Active Publication Date: 2021-10-19
深圳市前海腾际创新科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] This laser scanning method is suitable for relatively slow intrusion objects. If you want to detect fast-moving intrusion objects, you need to scan faster, which requires the pulsed laser to have a very high pulse repetition rate. Difficult and unable to measure velocity of intruding objects

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Embodiment Construction

[0039] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, wherein the schematic embodiments and descriptions are only used to explain the present invention, but are not intended to limit the present invention.

[0040] The invention proposes a method for detecting an object by using a laser curtain. This method uses the speed of the intruding object to be detected by the laser curtain, and then judges whether the object is suspicious by comparing its speed with a preset threshold, thereby initiating subsequent processing measures. Due to the need to detect the speed of the object, the laser curtain of the present invention is composed of multiple laser layers, and each laser layer is composed of multiple laser beams on the same horizontal plane. The laser curtain needs to be deployed near and above the protected target to form effective coverage, which can ensure that intruding objects fall through th...

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Abstract

The invention discloses a target detection method and system. The system includes: a plurality of laser emitting and receiving modules, forming a laser curtain on the side of the protected object. When the target passes through the laser curtain, the reflection information of the received laser light on the target is sent to Central control module; the central control module determines the speed of the target according to the received laser reflection information of the target, and determines whether to start the disposal device by judging the speed of the target; each of the laser emitting and receiving modules forms a laser layer, and multiple lasers The layers form a laser curtain. The invention defines a laser curtain based on fixed laser beams, which can effectively cover the protection target, is conducive to detecting the position and speed of the fast target, and is convenient for subsequent start-up of corresponding measures.

Description

technical field [0001] The invention relates to laser detection, in particular to a detection method and system capable of detecting, judging, and further disposing of targets intruding into areas where protected objects are located. Background technique [0002] The technology of laser detection of intrusion targets is mainly based on the time-of-flight technology, which uses the calculation of the round-trip time when the light pulse is projected on the intrusion object to measure the distance of the intrusion object, and detects the intrusion object by scanning the area of ​​the protected object. [0003] Document 1: CN102232196A discloses a method for optically scanning and measuring the surrounding environment of a laser scanner, which includes: a measuring head with a light emitter and a light receiver; a reflector, which reflects A mirror is rotatable about a first axis with respect to the measuring head; a base, with respect to which the measuring head is rotatable a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S17/48G01S17/58
CPCG01S17/48G01S17/58
Inventor 刘莎
Owner 深圳市前海腾际创新科技有限公司