Signal processing method and device for laser range finding

Abstract

The signal processing process for laser range finding includes the following steps: setting measured block number and laser emitting number; sampling and counting the reflected laser signal beginning from the first block so as to find the block the target is in; emitting laser beam with preset delay time in the block the target is in and sampling and operating on the reflected laser signal so as to find the precise distance between the laser range finder and the target.

Description

technical field [0001] The present invention is related to a laser range finder, and in particular provides a signal processing method and device for a laser range finder, which effectively improves the accuracy of the laser range finder without increasing the sampling period and sampling times. And save the memory required by the laser range finder. Background technique [0002] Laser range finder (Laser Range Finde) is one of the important devices for measuring distance. The conventional laser range finder uses a pulse (pulse) type laser transmitter to emit a laser pulse (laser pulse) of about 10ns-20ns onto a target. The laser signal reflected by the target is received by a laser receiver, and the distance is calculated by the following formula (1): [0003] T d =2L / C………………………………………(1) [0004] Formula (1) where L represents the distance between the laser range finder and the target, C represents the speed of light, and T d Represents the delay time between the emitt...

AI Technical Summary

Problems solved by technology

[0007] 1. During the sampling process, each reference point of the sampling must be recorded. Therefore, for the same distance measurement interval, the higher the sampling period, the larger the memory capacity must be set, and increasing the number of sampling times will also occupy a larger storage space, so A memory with a larger capacity is required, which also increases the manufacturing cost;

[0008] 2. To increase the sampling cycle and sampling times, higher-speed components must be used, which cost more and consume more power

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