KR950019661A - Distance error adjusting device and method of optical distance measuring device - Google Patents

Abstract

The present invention is an optical distance measuring device for measuring the distance by using the pulsed light, it is easy to correct the occurrence of errors due to various time delays occurring in the method for measuring the distance by detecting the rising edge of the pulsed light and the received light The present invention relates to a distance error adjusting device and method for an optical distance measuring device, which can improve the productivity of the device. There was a problem to deal with.

In view of such a conventional problem, the present invention provides a trigger signal generation circuit indicating a start point of light emission in designing an optical distance measuring device so that a reference point for measuring the movement time of light can be changed by time constant, By adjusting this time constant, the distance error of the device can be adjusted.

Description

Distance error adjusting device and method of optical distance measuring device

Since this is an open matter, no full text was included.

1 is a configuration diagram of the distance error adjusting device of the optical distance measuring device of the present invention,

2 is an operation flowchart of the distance error adjusting method of the optical distance measuring apparatus of the present invention.

Claims (3)

A light emitting unit 20 for emitting light, which is a medium for distance measurement, to the target 10; A light receiving unit 30 for receiving the light emitted from the light emitting unit 20 against the target 10 and being reflected; A trigger signal generator 40 generating photoelectric conversion of a light emitting signal emitted from the light emitting unit 20 as a start signal of a time for moving light; After receiving the signal generated by the trigger signal generating unit 40 and the signal received by the light receiving unit 30 and measuring the time the light travels, the measured time is calculated as a distance according to the light emission and time of the laser A distance error adjusting device for an optical distance measuring device, characterized in that it comprises a control for controlling gain conversion and a time-distance converter (50). 2. The apparatus of claim 1, wherein the trigger signal generator (40) comprises: a variable signal delay circuit (41) for detecting an input signal and generating a signal after a predetermined time delay; And a signal delay adjuster (42) for varying the time constant of the variable signal delay circuit (41) to adjust the degree of time delay. Placing the finished product at a predetermined distance and measuring a predetermined distance to determine whether the measured distance is equal to a predetermined distance (S1); A second step (S2) of completing the adjustment when the measured distance is equal to the determined distance; A third step (S3) of determining whether the measured distance is greater than the determined distance when the measured distance is not equal to the determined distance; A fourth step (S4) of adjusting the delay time of the variable signal delay circuit to a large value using a signal delay adjuster when the measured distance is greater than a predetermined distance; And a fifth step (S5) of adjusting the delay time of the variable signal delay circuit with a signal delay adjuster when the measured distance is smaller than a predetermined distance. ※ Note: The disclosure is based on the initial application.