Integrated multichannel synchronous oscillation data acquiring and monitoring and analysis diagnostic device

Abstract

The invention discloses an integrated multi-channel synchronous vibration data acquisition, monitoring and analysis diagnosis device. The data acquisition unit comprises a signal conditioning circuit, an anti-aliasing filtering circuit, a multi-channel synchronous sampling chip, a system control logic unit, a pulse-shaping circuit (16), a phaselocking frequency multiplication chip and a microprocessor CPU, wherein the system control logic unit comprises a channel configuration logic unit, a clock generation logic unit, a rotating speed measurement logic unit, a sampling control logic unit and a frequency divider, and the data acquisition unit (1) is directly connected with a plurality of eddy current vibration displacement sensors, ICP type piezoelectric vibration acceleration sensors or magnetoelectric vibration speed sensors, and has an interface of a single-channel direct-connected eddy-current, photoelectric or magnetoelectric key phase / revolution speed sensor and so on. The CPU core board is connected with a computer or a palm computer through a network and a USB or a serial interface and finishes the data acquisition for monitoring and analysis diagnosis.

Description

technical field [0001] The invention belongs to the fields of mechanical vibration signal monitoring and equipment failure analysis and diagnosis, and in particular relates to a hand-held, portable and fixed integrated multi-channel synchronous vibration data collection, monitoring, analysis and diagnosis device for mechanical equipment. Background technique [0002] Modern process industries, such as metallurgy, petrochemical, electric power and other industries, are all composed of extensively coupled equipment groups. The scale is getting larger and larger, and the links between various production links are becoming closer and closer, forming a production chain with overall correlation, and constantly moving towards high efficiency. , high speed, large capacity, high strength, systematization and automation. The functions of the equipment are increasing, the performance indicators are getting higher and higher, and the composition and mechanism are becoming more and more ...

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Problems solved by technology

[0006] Chinese utility model patent "Highly Integrated Portable Vibration Signal Processing Device" (Patent No.: 200520050843.9) realizes the acquisition and processing of multi-channel vibration signals in the form of a notebook computer plus a data acquisition device, but it does not consider the key phase signal of the rotating machine processing, limits the range of application

[0007] Chinese utility model patent "A Portable Vibration Tester" (patent number: 86200213U) adopts analog circuit technology to realize single-channel vibration measurement with single function

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