Optical type potentiometer

Abstract

An optical potentiometer mainly consists of a special circuit board and a movable reflector moving to left or right above the said special circuit board containing light emitter, light receiver, amplifier, filter, memory for storing a predefined reference, controller and digitalized variable resistor. The light beam from the said light emitter is reflected to the light receiver by the said movable reflector. After amplifier and filtered, the light beam is compared with the said reference to calculate the actual displacement. After compared with a standard displacement in the controller, it isused to drive a digitalized variable resistor to obtain a preper resistance value corresponding to the displacement.

Description

technical field [0001] The present invention relates to an optical potentiometer, in particular to an optical control method to measure the actual movement amount of a movable reflector set on the optical potentiometer, and then drive a special digital variable resistor to output A novel optical potentiometer for its corresponding resistance value. Background technique [0002] Most of the current common variable resistors or potentiometers use the mutual contact function between the movable part set on the sliding rod and the relative position of the carbon resistor to output the corresponding resistance value. Although such existing variable resistors or potentiometers have been widely used in the industry, and have also been used for a very long time, because the movable member and the carbon resistor on the sliding rod must be frictionally combined, Therefore, except that it will seriously affect the service life of the variable resistor or potentiometer, it cannot prov...

AI Technical Summary

Problems solved by technology

Although such existing variable resistors or potentiometers have been widely used in the industry, and have also been used for a very long time, because the movable member and the carbon resistor on the sliding rod must be frictionally combined, Therefore, except that it will seriously affect the service life of the variable resistor or potentiometer, it cannot provide a very accurate resistance value; It will cause a lot of clutter in electronic equipment. Therefore, in the current electronic technology industry with stricter quality and accuracy requirements, how to solve the above problems is gradually being valued by the electronic industry.

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