System for monitoring vibration of rotating machinery rolling bearing in wireless mode

A rolling bearing and wireless vibration technology, applied in the detection field, can solve the problems of inconvenient installation, use and maintenance, single performance of ultrasonic flaw detector, scalability and poor maintainability, and achieve simple structure, reliable performance and anti-interference powerful effect

Inactive Publication Date: 2011-05-11
JIANGSU UNIV
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  • Description
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  • Application Information

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Problems solved by technology

From the perspective of these related technologies, the performance of handheld vibration analyzers and ultrasonic flaw detectors is relatively single, and there are few points that can be monitored at the same time, requiring staff to operate; the online detection series is

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  • System for monitoring vibration of rotating machinery rolling bearing in wireless mode
  • System for monitoring vibration of rotating machinery rolling bearing in wireless mode
  • System for monitoring vibration of rotating machinery rolling bearing in wireless mode

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Example Embodiment

[0012] The present invention will be further illustrated by specific examples below. Such as figure 1 As shown, this embodiment includes three parts: sending, receiving, and upper computer analysis and processing. Three test points are respectively installed with acceleration sensor 1; channel selection 7 is composed of CD4514 strobing and driving relay after ULN2003A power amplification; conditioning circuit 8 (such as image 3 (Shown) is composed of a charge amplifier 14, a preamplifier 15, a band pass filter 16, a post amplifier 17, an envelope detector 18, and a low pass filter 19. The charge amplifier 14 operation amplifier selects OP07; the preamplifier 15 and the post amplifier 16 select instrument amplifier AD620; the band pass filter 16 is a second-order band pass active filter with a center frequency of 5kHz and a bandwidth of 500Hz; the envelope detector 18 is composed of The low-pass filter 19 is composed of a Sallen-Key second-order low-pass filter with a cut-off f...

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Abstract

The invention relates to a system for monitoring the vibration of a rotating machinery rolling bearing in a wireless mode. In the system, a rotating machinery rolling bearing is used as a monitoring object, acceleration transducers are used for detecting a vibration signal of the bearing, the signal is changed into a digital signal through filtering, amplifying and A/D (Analog/Digital) conversion, the digital signal is sent to an upper computer in a wireless transmission mode, characteristic parameters are obtained by the upper computer through data analysis, a three-dimensional vibration signal eigenvector is constituted jointly by the characteristic parameters of three detection points, a neural network is used for analyzing whether a fault exists or not, pattern recognition is used forjudging the specific type of the fault, and finally, a fault message is processed, and the functions of data storage and display and fault alarm are provided. The system for monitoring vibration in awireless mode is suitable for the application occasions of the rotating machinery in metallurgy, electricity, petroleum, chemical industry, automobile, ship building and the like, and has the characteristics of simple structure, reliable performance, long service life, strong real-time property and the like.

Description

technical field [0001] The invention belongs to the technical field of detection, and in particular relates to a wireless vibration monitoring system for rolling bearings of rotating machinery. . Background technique [0002] Rolling bearings are the most commonly used components in various types of rotating machinery. 30% of the failures of rotating machinery are directly or indirectly caused by cracks, spalling, shocks, vibrations, etc. of rolling bearings. Some key equipment plays an important role in the production process. Once a failure occurs, the direct and indirect losses will be huge. [0003] For the diagnosis of rolling bearings, from the regular patrol inspection and diagnosis by staff in the 1980s to today's network-based distributed structure, the structure of the system is becoming more and more complex, and the real-time performance is getting higher and higher. The current related technologies include handheld vibration analyzers, ultrasonic flaw detector...

Claims

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Application Information

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IPC IPC(8): G01M13/04G01H1/10G01H1/12G08C17/02
Inventor 陈坤华潘天红李天博吉奕
Owner JIANGSU UNIV
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