Device and method for measuring rotating speed of rotating object by adopting electrostatic sensor

Abstract

The invention discloses a device and a method for measuring the rotating speed of a rotating object by adopting an electrostatic sensor. The method is as follows: a single electrostatic sensor electrode or double electrostatic sensor electrodes is / are arranged near a detected rotating part, and is / are used for sensing the rotation information of the rotating object at the position where the electrodes are positioned, the electrode of the electrostatic sensor is connected to a microprocessor in series via a single signal conditioning unit and a signal processing unit, electrostatic signals are amplified and filtered through the conditioning unit and are sent to the microprocessor through the signal processing unit, and relevant analytical calculation is carried out on the electrostatic signals through the microprocessor so as to obtain the rotating speed of the detected rotating object finally. Compared with the conventional rotating speed measuring device, the device is simple in structure, extremely low in cost and convenient to install, is not limited by the size dimension of a detected part and not easy to influence by environmental factors, belongs to noncontact measurement and has relatively high accuracy.

Description

technical field [0001] The invention belongs to the technical scope of rotational speed measurement, in particular to a device and method for measuring the rotational speed of a rotating body by using an electrostatic sensor. Background technique [0002] Rotational speed is one of the important parameters reflecting the operating condition of rotating equipment. Speed ​​measurement technology is widely used in the test operation and speed adjustment system of rotating equipment such as generators, motors, centrifuges, and machine tool spindles in the industrial field. Speed ​​measurement accuracy, flexibility, real-time and reliability are the keys to ensure the normal operation of high-speed rotating equipment. Therefore, it is of great practical significance to find an accurate, fast, economical and universally applicable rotational speed measurement method. Currently used rotational speed measurement devices mainly include centrifugal tachometer, photoelectric tachomet...

AI Technical Summary

Problems solved by technology

Among them, the centrifugal tachometer belongs to contact measurement, the structure is complex, and the measurement accuracy is not high; the photoelectric tachometer is easily disturbed by external light sources and vibrations, and is easily affected by harsh environments; the magnetoelectric tachometer is more sensitive to temperature changes

Existing speed measurement devices have certain limitations, and it is difficult to meet the precise measurement of large rotating equipment and small rotating bodies under different conditions.

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