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Vibration severity measuring circuit

A technology for measuring circuits and vibration intensity, applied in measuring devices, measuring ultrasonic/sonic/infrasonic waves, using electrical devices, etc., can solve problems such as actual measurement distortion, inaccurate data measurement, complex and variable vibration signals, and achieve frequency Small response error and good accuracy

Active Publication Date: 2014-09-17
JIANGYIN JIANGLING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing vibration intensity measurement methods still use the effective value measurement method. This measurement method is only accurate under the standard signal, but the actual equipment vibration signal is often more complex and changeable. Therefore, the effective value measurement The method will cause actual measurement distortion, data measurement inaccurate, etc.

Method used

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Embodiment Construction

[0014] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0015] The present invention includes a compensation adjustment circuit ( figure 1 ) and true RMS processing and adjustment circuit ( figure 2 ) in two parts. The output end of the former is connected with the input end of the latter and is the same end.

[0016] Such as figure 1 As shown, the compensation adjustment circuit includes operational amplifier IC2B, the inverting input terminal of operational amplifier IC2B is connected in series with resistor R10 and resistor R9 as the input terminal IN of the compensation adjustment circuit, capacitor C29 is connected in parallel with resistor R9; the non-inverting input terminal of operational amplifier IC2B is connected to The pull-down resistor R19; the resistor R11 is connected between the inverting input terminal and the output terminal of the operational amplifier IC2B, the resistor R...

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Abstract

The invention discloses a vibration severity measuring circuit which comprises a compensation adjustment circuit and a true virtual value processing and adjusting circuit. The compensation adjustment circuit and the true virtual value processing and adjusting circuit are connected in sequence, the compensation adjustment circuit is composed of operational amplifiers, the true virtual value processing and adjusting circuit comprises a true virtual value processing circuit part and an adjusting circuit part, and both the true virtual value processing circuit part and the adjusting circuit part are composed of a signal conversion chip and an operational amplifier. The vibration severity measuring circuit has the advantages of being good in accuracy, small in frequency response error and the like, and the vibration severity measuring circuit is suitable for vibration speed sensors, piezoelectric vibration sensors and other vibration sensors of various signal types, and also suitable for various types of vibration instruments.

Description

technical field [0001] The invention relates to the field of on-line monitoring of rotating machinery, in particular to a circuit for measuring vibration intensity, which is suitable for a series of instruments for monitoring and protecting the vibration of industrial rotating machinery. Background technique [0002] Vibration intensity is the main monitoring parameter of various rotating mechanical equipment such as fans, motors, water pumps, etc. Vibration intensity is the effective value of vibration velocity, which directly reflects the vibration velocity of the equipment and is directly related to the safety status of the equipment. Most of the existing vibration intensity measurement methods still use the effective value measurement method. This measurement method is only accurate under the standard signal, but the actual equipment vibration signal is often more complex and changeable. Therefore, the effective value measurement This method will cause actual measuremen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H11/06
Inventor 夏惠兴华洪斌
Owner JIANGYIN JIANGLING TECH