Mechanical vibration state signal acquisition and analysis system

Abstract

The invention provides a mechanical vibration state signal acquisition and analysis system, which comprises an analog conditioning circuit module, an analog-to-digital conversion module, an FPGA function module and a processor function module which are connected in sequence. An input port of the analog conditioning circuit module is connected with an output port of a vibration sensor. The system further comprises a power management module which is used for providing a constant voltage source and / or a constant current source for an eddy current sensor, a piezoelectric acceleration sensor and the power utilization modules. According to the invention, synchronous acquisition of sixteen channels of vibration state signals is realized, primary processing and analysis of data are completed, vibration state signal features are extracted for diagnosis and alarm, and data and feature parameters are uploaded in real time. The system supports the access of an eddy current displacement sensor, a magnetoelectric speed sensor and a piezoelectric acceleration sensor, can collect a vibration displacement signal, a vibration speed signal and a vibration acceleration signal at the same time, and is used for state real-time monitoring, fault diagnosis and life prediction of a rotating mechanical structure.

Description

technical field [0001] The invention relates to the technical field of mechanical vibration state signal acquisition, in particular to a mechanical vibration state signal acquisition and analysis system. Background technique [0002] The statements in this section merely provide background art related to the present invention and do not necessarily constitute prior art. [0003] Rotating machinery equipment (such as motors, bearings, pumps, etc.) is the key equipment in important fields such as electric power, chemical industry, machinery manufacturing, and aerospace, and is constantly developing in the direction of automation, precision, and complexity. The requirements for the safety and reliability of rotating machinery and equipment in engineering are further improved. Therefore, structural health monitoring and fault diagnosis for rotating machinery is of great significance. [0004] The structural health monitoring and fault diagnosis of rotating machinery is based o...

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Problems solved by technology

[0014] In order to solve the deficiencies in the prior art, the present invention provides a mechanical vibration state signal acquisition and analysis system, which simultaneously meets the performance requirements of the three dimensions of channel number, sampling frequency, and sampling accuracy when collecting vibration state signals, and solves a large number of problems. Technical problems of real-time and synchronization in the process of data processing and transmission

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