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Target detection method and system

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

Active Publication Date: 2019-01-01
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 comprises a plurality of laser transmitting and receiving modules and a central control module, wherein the plurality of lasertransmitting and receiving modules form a laser screen on the side surface of a protection target, and send the reflection information of a received laser to a target to the central control module when the target passes through the laser screen; the central control module determines a target speed according to the laser reflection information of the received target, and determines whether to starta disposal device through determining the speed of the target; and each laser transmitting and receiving module forms one laser layer, and the plurality of laser layers form one laser screen. In theinvention, the laser screen formed based on a fixed laser beam is defined, and the protection target is effectively covered, which is good for detecting the position and the speed of a rapid target and is convenient for starting corresponding measures subsequently.

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 Applications(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