Flexible electronic device for wheel-rail force testing, and preparation method thereof

An electronic device and wheel-rail force technology, which is applied in the direction of wheel rim measurement/measurement, can solve problems such as difficult to do online monitoring of wheel-rail interaction relationship, improve health detection level and safety performance, realize structural health monitoring, good The effect of soft properties
CN111439290AInactive Publication Date: 2020-07-24EAST CHINA JIAOTONG UNIVERSITY +1
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
EAST CHINA JIAOTONG UNIVERSITY
Publication Date
2020-07-24
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention discloses a flexible multifunctional electronic device for wheel-rail force online monitoring, and relates to the field of rail transit wheel-rail relation and flexible electronics. Thedevice comprises a temperature sensing function module, a dynamic strain sensing function module and a piezoelectric vibration sensing function module. All the modules are integrated on the same flexible substrate, the device is installed on a wheel spoke curved surface, and keeps conformal contact with the wheel spoke curved surface, and the acting force between wheel rails is calculated by utilizing dynamic strain and vibration information of spoke plates, so real-time monitoring of the wheel-rail contact state (temperature, dynamic strain and vibration information) of the high-speed train is achieved, the flexible multifunctional electronic device is prepared through micro electro mechanical machining and a laser lift-off technology, and technical guarantee is provided for monitoring application of the flexible electronic technology in the wheel-rail relation.
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Description

technical field

[0001] The invention relates to the field of rail transit wheel-rail relationship and flexible electronics, in particular to a flexible electronic device for wheel-rail force testing and a preparation method thereof. Background technique

[0002] The wheel-rail relationship largely determines the comfort, safety, and environmental friendliness of high-speed trains. The irregularities of the track and the periodic vibration of the vehicle itself are directly reflected in the action of the wheels and rails, resulting in friction between the wheels and rails. The role is also dynamic. Therefore, the state monitoring of the wheel-rail action has always been an important issue in the operation of the train. The structural health monitoring technology of the wheel-rail has broad application prospects, especially the online health monitoring technology. Technical Support.

[0003] At present, the detection technology of wheel-rail relationship is mainly divided int...

Claims

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