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High-speed train bearing safety state real-time monitoring system

A technology for real-time monitoring system and safety status, which can be used in measurement devices, testing of mechanical components, testing of machine/structural components, etc. It can solve problems such as hysteresis, achieve high accuracy, ensure accuracy and efficiency, and improve maintenance efficiency. and device stability

Active Publication Date: 2021-06-04
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

The temperature is used to monitor the bearing operation, which is usually effective when the bearing fault is in the deterioration stage, and has a certain hysteresis

Method used

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  • High-speed train bearing safety state real-time monitoring system
  • High-speed train bearing safety state real-time monitoring system
  • High-speed train bearing safety state real-time monitoring system

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Embodiment

[0032] A high-speed train bearing safety state real-time monitoring system, including a signal acquisition module, the signal acquisition module includes an acceleration sensor for collecting bearing vibration signals, and the signal acquisition module also includes a transmitting device electrically connected to the acceleration sensor, It is used to transmit the detected original vibration signal to the rapid diagnosis module, the damage degree judgment module and the fault type judgment module through wired or wireless means;

[0033] The rapid diagnosis module quickly determines whether the bearing has a fault through the probability density parameter of the vibration signal amplitude, and the probability density parameter is the product of the 3σ distribution width of the probability density function amplitude and the peak value of the probability density function;

[0034] The damage degree judging module judges the wear state and fault damage degree of the bearing through ...

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Abstract

A high-speed train bearing safety state real-time monitoring system comprises a signal acquisition module, the signal acquisition module comprises an acceleration sensor used for acquiring bearing vibration signals, and the signal acquisition module further comprises a transmitting device electrically connected with the acceleration sensor and used for transmitting detected original vibration signals to the rapid diagnosis module, the damage degree judgment module and the fault type judgment module in a wired or wireless mode; and the rapid diagnosis module rapidly judges whether the bearing has a fault or not according to a probability density parameter of a vibration signal amplitude, wherein the probability density parameter is a product of a 3 sigma distribution width of a probability density function amplitude and a probability density function peak value. The system not only can prevent disastrous accidents caused by sudden faults and guarantee normal operation of the train, but also can prevent gradual faults and guarantee precision and efficiency of the high-speed train bearing within the service life.

Description

technical field [0001] The invention relates to a real-time monitoring system for the safety state of high-speed train bearings, which belongs to the field of rail transit safety detection. Background technique [0002] With the continuous accumulation of my country's train operating mileage and the continuous improvement of the demand for operating speed and freight volume, safety, as the primary prerequisite for high-speed train speed, will put forward higher requirements for the overall safety and reliability of my country's high-speed trains . As one of the important components of high-speed train bogies, rolling bearings play a role in reducing friction and supporting loads, and are extremely important to the efficient and reliable operation of trains. Their service status will directly affect whether the train can run safely. At this stage, the detection of rolling bearings of high-speed trains is still mainly based on temperature monitoring, and the method of regular ...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06F17/18G01M13/045
CPCG06F17/18G01M13/045G06F2218/16G06F2218/08
Inventor 永远王一斐李盼召梁婷
Owner SOUTHWEST JIAOTONG UNIV
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