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Laser distance measuring method and system based on pulse counting and time expansion

A technology of pulse counting and laser ranging, which is applied in the field of measurement and testing, and can solve problems such as complex circuits, poor sensitivity, and low anti-interference ability

Inactive Publication Date: 2014-12-03
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the high-pass capacitance-resistance time identification method and the differential delay method have achieved some results in improving accuracy, they all have many shortcomings such as complex circuits, poor sensitivity, and low anti-interference ability.

Method used

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  • Laser distance measuring method and system based on pulse counting and time expansion
  • Laser distance measuring method and system based on pulse counting and time expansion
  • Laser distance measuring method and system based on pulse counting and time expansion

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Embodiment Construction

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described and discussed below in conjunction with the accompanying drawings of the present invention. Obviously, what is described here is only a part of the examples of the present invention, not all examples. Based on the present invention All other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0038] In order to facilitate the understanding of the embodiments of the present invention, specific embodiments will be taken as examples for further explanation below in conjunction with the accompanying drawings, and each embodiment does not constitute a limitation to the embodiments of the present invention.

[0039] A laser ranging method based on pulse counting and time expansion, the process is as follows figure 1 As shown, in this embodiment, the substation protection desc...

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Abstract

The invention discloses a laser distance measuring method and system based on pulse counting and time expansion. The method includes the steps that a laser scanner is arranged above an object to serve as a coordinate original point, a three-dimensional right-angle coordinate system is built, the tail end of the laser scanner serves as a fixing point, the object rotates with the radius gradually changing, a direction vector, the emission moment and the receiving moment of an emitted laser pulse signal are recorded, flight time of the laser pulse is obtained according to the emission moment and the receiving moment, optimization is carried out through a pulse counting method and a time expansion method, optimized flight time is obtained, the distance between the laser scanner and an measured object is solved according to the optimized flight time, and horizontal distance of the measured object and the object is solved.

Description

technical field [0001] The invention relates to the technical field of testing and measurement, in particular to a laser ranging method and system based on pulse counting and time expansion. Background technique [0002] Ranging technology has applications in various fields. For example, in the process of power transmission, substations connect transmission lines of different voltage levels together. On the one hand, it improves the power transmission efficiency, and on the other hand, it can meet the voltage requirements of users, which plays a vital role in the stable operation of the entire power system. Because of this, it is extremely important to protect the substation and ensure its own safety. [0003] The traditional method of detecting substations is that the staff patrols the substations back and forth to see if there are illegal intrusions such as animals and illegal personnel around them to ensure the safety of the substations. However, such an inspection meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/08G01S17/89
CPCG01S17/14G01S17/89
Inventor 孙岳李永旭赵金辉王世强李立学郑益慧王昕薛松
Owner STATE GRID CORP OF CHINA
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