A device for judging the direction of rotor rotation

Abstract

The invention discloses a device for judging the rotation direction of a rotor. The device includes: a sensor, including a first sensor and a second sensor fixed outside the rotor, and simultaneously performs non-contact measurement on the rotor, and outputs two channels with a sequence The periodic single pulse signal; the logic circuit connects the first sensor and the second sensor, inputs the two periodic single pulse signals with sequential timing, and outputs a high level corresponding to the relationship between the positive and negative directions of the rotor or low level signal. The invention uses a simple digital logic device to make a fixed logical relationship between the rotor rotation direction and the output signal, and the judgment result is accurate. At the same time, through the control device, the steering can be detected at any time when the rotor is working, which solves the problem of conventional detection methods. Due to the disadvantages of using complex integrated chips in high cost and relying on software for implementation, the logic circuit of the present invention is simple, convenient for implementation, and improves the reliability and safety of the circuit.

Description

technical field [0001] The invention belongs to the technical field of measurement and control of rotating equipment, and in particular relates to a device for judging the rotation direction of a rotor. Background technique [0002] In industrial production applications, the direction of rotation of the rotor of rotating equipment is a fundamental issue for the proper operation of the system. The speed test of the rotor generally uses sensors installed on the tangent surface of the speed measuring toothed disc. When measuring the speed direction, two sensors are installed on the test tangent surface at a certain angle. The traditional method is to use programmable logic devices to detect two signals respectively. At the pulse time of , if the installation method is already known, the programmable device judges the phase difference between the two according to the measurement results. Then the direction of rotation of the rotor is obtained. [0003] Through the traditional ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, provide a device for judging the direction of rotation of the rotor, and use simple digital logic devices to make a fixed logical relationship between the direction of rotation of the rotor and the output signal, and the judgment result is accurate At the same time, through the control device, the steering can be detected at any time when the rotor is working, which solves the problems of high cost of using complex integrated chips and relying on software for implementation in the conventional detection method. The logic circuit of the present invention is simple, convenient to implement, and improves the circuit reliability and safety

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