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Vibration measurement anti-interference method and device

An anti-interference device, vibration measurement technology, applied in the measurement device, the use of electrical devices, the measurement of ultrasonic/sonic/infrasonic waves, etc., can solve problems such as the inability to fully meet the relevant requirements

Pending Publication Date: 2022-06-03
RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention is proposed to overcome the shortcomings that conventional filtering means cannot fully meet the relevant requirements of the system, and its purpose is to provide a vibration measurement anti-interference device and method

Method used

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  • Vibration measurement anti-interference method and device

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Embodiment 1

Embodiment 2

A kind of vibration measurement anti-interference device applied in embodiment 1, such as figure 1 As shown, it includes a sensor 1, a primary isolation circuit 3 and a secondary isolation circuit 4 connected in sequence. The secondary isolation circuit 4 is respectively connected with the vibration measurement system 5 and the power consumption analysis system 7, and the secondary isolation circuit 4 is connected with the power consumption. The analysis systems 7 are connected through a drive capacitive load circuit 6 .

[0024] The output end of the primary isolation circuit 3 is connected to the input end of the secondary isolation circuit 4 .

[0025] The sensor 1, electromagnetic induction sensor, analog signal, output voltage (0-5)v, static inductance not less than 3.8mH;

For the signal lead 2, the high-strength QA-1 copper enameled wire has a DC resistance of (20±2) Ω, and the surface of each welding point is required to be smooth, without cracks and dirt;

The primar...

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Abstract

The invention discloses a vibration measurement anti-interference method and device, and the method comprises the steps: analyzing an interference path, designing a two-stage isolation circuit at the rear end of a sensor, designing a drive circuit in front of a capacitive load, and designing a two-stage isolation circuit at the rear end of the sensor through employing an overall thought of combining isolation and drive in order to eliminate interference without affecting the measurement, and developing isolation and drive circuits at the same time; interference generated when the vibration measurement system and the power analysis device measure at the same time is effectively eliminated. The invention provides a vibration measurement anti-interference method and device, and the method can eliminate the interference caused by a capacitive load device, cuts off the coupling path, meets the requirements of a vibration measurement device and a power analysis device (capacitive load) which are directly driven by an output signal of an electromagnetic induction sensor, and improves the reliability of the vibration measurement device. Meanwhile, the measurement precision is not influenced.

Description

technical field [0001] The invention belongs to the field of anti-interference of test systems, and in particular relates to an anti-interference method and device for vibration measurement. Background technique [0002] All running machines have vibration. Vibration is the pulse of the machine and is a representation of the machine's operating condition. Through the measurement of mechanical vibration, functions such as real-time monitoring of equipment operation and fault diagnosis can be realized. It is one of the characteristics of various mechanical equipment. basic method. [0003] Any measurement system or measurement method that measures the vibration of the machine has the influence of interference. If the anti-interference ability of the measurement system is very poor, the data measured by the measurement system is unreliable, and it cannot reflect the mechanical vibration. characteristic. [0004] In the conventional measurement system for machine vibration, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H11/02G01H11/06
CPCG01H11/02G01H11/06
Inventor 刘方磊毕书阳
Owner RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND
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