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

An electrostatic sensor and rotating body technology, which is applied in the direction of using a device that measures the time required to move a certain distance, can solve the problem of being easily affected by harsh environments, difficult to meet the precise measurement of large rotating equipment and small rotating bodies, photoelectric rotation speed The watch is susceptible to problems such as external light source interference and vibration interference

Inactive Publication Date: 2013-01-02
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
  • Description
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  • Application Information

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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 environm

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

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[0028] The invention provides a device and method for measuring the rotational speed of a rotating body by using an electrostatic sensor. The following describes the present invention with reference to the drawings and embodiments as follows:

[0029] figure 1 Shown is a schematic diagram of the structure and measurement principle of a rotational speed measuring device based on dual electrostatic sensor electrodes. In the figure, the electrostatic sensor electrode A or the electrostatic sensor electrode A and the electrostatic sensor electrode B are arranged near the rotating object 2 to be measured, and the rotation information of the rotating object at the position is sensed; an insulating material 3 is attached to the surface of the electrostatic sensor electrode. The output of the electrostatic sensor electrode is connected in series to the input end of the microprocessor 1 via the signal conditioning unit 4 and the signal processing unit 5; the microprocessor is composed of ...

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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...

Claims

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Application Information

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IPC IPC(8): G01P3/80
Inventor 闫勇王丽娟钱相臣
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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