A distance measuring device based on color sensor

Abstract

The present invention provides a distance measuring device based on a color sensor, which includes a device to be measured, a mechanical link, a color sensor, and a color code belt, and the color sensor is connected to the device to be measured through the mechanical link; The color code tape is installed along the movement track of the device to be measured; the distance between the color sensor and the color code tape is less than the threshold range of the measurement distance of the color sensor; the color code tape is a two-color code tape , the two colors are evenly and equidistantly spaced, and are used to measure the motion stroke value of the device. The distance measuring device of the invention only uses one color sensor, which reduces the cost. And it avoids the need to re-mark the distance measurement position when the incremental encoder often loses its position after the equipment is powered off. If the operator forgets this step, many interlocking conditions based on the position will be invalidated, resulting in safety accidents.

Description

technical field [0001] The invention relates to the field of automatic control, in particular to a distance measuring device based on a color sensor. Background technique [0002] At the coiling station in the high-speed wire collection area, there are many devices that need distance measurement, and encoders, iron stops and many proximity switches are used. [0003] In the prior art, when the encoder is used to measure the distance of the equipment, the incremental encoder often loses its position after the equipment is powered off and needs to be remarked to measure the distance. If the operator forgets this step, many errors based on the position will occur Interlock conditions fail, resulting in safety accidents. Although the absolute value encoder can still save the position information of the device in the case of power failure, it is usually not selected because of its relatively high cost relative to the incremental encoder. [0004] In addition, due to the inappro...

AI Technical Summary

Problems solved by technology

The proximity switch is only a point and cannot form a reliable redundancy with the encoder for equipment protection

In addition, dust often falls on the surface of the limit switch, which will also affect the detection effect

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