Gate troubleshooting device based on phase method laser ranging

Abstract

According to the gate troubleshooting device based on phase method laser ranging, a timer is used for carrying out time calibration on a laser emitting device and a laser receiving device, demodulation is carried out through a secondary modulation method, optical signals are amplified under the condition that it is guaranteed that the phase is not changed, the gate opening and closing distance is measured through a multi-angle fusion method, a single-phase-method ranging scheme commonly adopted at present is replaced, accuracy of phase-method laser ranging is ensured, meanwhile, the high-frequency-measurement characteristic and the high-precision characteristic are achieved, and troubleshooting accuracy is improved.

Description

technical field [0001] The invention relates to the field of gate fault detection, in particular to a gate fault troubleshooting device based on phase method laser ranging. Background technique [0002] The scientific management of water resources is increasingly showing its importance and necessity. In order to achieve the optimal dispatch of water resources, it must be realized by controlling the gates. After most of the river gates have been used for a long time, the bottom of the gate cannot touch the ground after the gate is lowered, resulting in the gate not being able to effectively close the river, which may cause damage to the gate. Therefore, it is necessary to check the gate failure in time. [0003] my country's patent application number: CN202110780495, publication date: 2021.10.22, discloses a dimmable traffic technology monitoring and imaging supplementary light device based on laser ranging, which is characterized in that it includes a main logic processing u...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a gate fault troubleshooting device based on the phase method laser ranging, which solves the problem of using multiple different phases for measurement and measurement due to the periodic uncertainty of the ranging value in the laser ranging technology based on the phase method in the prior art. In contrast, the calculation complexity increases, resulting in the contradiction between measurement frequency and accuracy. In the process of gate opening and closing, due to the influence of water level, water flow and other factors, the redundancy factor has a great influence, making the calculation accuracy not high.

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