Electromagnetic type oil metal particle monitoring sensor resistant to environmental magnetic field interference

A technology for monitoring sensors and metal particles, applied in particle and sedimentation analysis, material analysis through electromagnetic means, instruments, etc., can solve problems such as difficult adjustment, achieve the effect of enhancing recognition ability and improving anti-interference ability

Inactive Publication Date: 2014-02-19
NAT UNIV OF DEFENSE TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This technology also has the problem of geomagnetic compensation, and in order to achieve the symmetry of the two electromagnetic fi...

Method used

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  • Electromagnetic type oil metal particle monitoring sensor resistant to environmental magnetic field interference
  • Electromagnetic type oil metal particle monitoring sensor resistant to environmental magnetic field interference
  • Electromagnetic type oil metal particle monitoring sensor resistant to environmental magnetic field interference

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Embodiment Construction

[0023] See figure 2 , image 3 , the present invention includes two parts of a metal particle sensitive unit and an intelligent transmitter, wherein: the metal particle sensitive unit (see figure 2 ), including a ring-shaped magnetically permeable material shell (the shell can also be of other shapes) 1, the shell 1 is provided with an excitation coil 3 and the first and second induction coils 2, 4 located on both sides of the excitation coil 3; intelligent transmitter (see image 3 ), including: an excitation signal source 7 connected to the excitation coil 3; first and second preamplifiers 8 and 9 respectively connected to the first and second induction coils 2 and 4; respectively connected to the first and second preamplifiers The first and second phase modulators 10 and 11 connected to the amplifiers 8 and 9; the differential amplifier 12 connected to the first and second phase modulators 10 and 11; the differential amplifier 12, the excitation coil 3 and the excitation...

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Abstract

The invention discloses an electromagnetic type oil metal particle monitoring sensor resistant to environmental magnetic field interference. The electromagnetic type oil metal particle monitoring sensor comprises a metal particle sensing unit and a smart transmitter, wherein the metal particle sensing unit is used for inducing and producing induced voltage when metal particles pass by the sensor; and the smart transmitter is used for generating an excitation signal required by the metal particle sensing unit, sending the excitation signal to the metal particle sensing unit, receiving an induced voltage signal output by the metal particle sensing unit, eliminating interference of an external environment magnetic field and influences of an excitation magnetic field, obtaining a useful signal induced when the metal particles pass by the sensor, performing analog-digital conversion and processing on the signal, eliminating circuit noise, recognizing and counting the metal particles and uploading information to a network. According to the sensor, the disturbance resisting capacity and the recognition capability of tiny metal particles can be improved, and a high-performance monitor is provided for on-line monitoring of metal particles in lubricating oil.

Description

technical field [0001] The invention belongs to the field of on-line oil analysis, and in particular relates to an electromagnetic oil metal particle monitoring sensor resistant to environmental magnetic field interference. Background technique [0002] When large-scale mechanical equipment is working, metal abrasive particles are produced due to mechanical wear. Once the machine is abnormally worn, it may cause major mechanical failures, resulting in huge economic losses and casualties. The electromagnetic metal particle monitoring sensor is used to monitor the number and size of metal particles in the mechanical lubricating oil. Once the metal particles produced by abnormal wear are found in the lubricating oil, the maintenance personnel can repair the equipment in time to realize mechanical abnormality. Early warning of wear and tear to prevent major mechanical accidents. [0003] When the equipment wears abnormally, when the wear particles pass through the sensor with t...

Claims

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Application Information

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IPC IPC(8): G01N15/02G01N27/00
Inventor 夏志澜杨拥民杨定新胡政李宝玺胡海峰
Owner NAT UNIV OF DEFENSE TECH
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