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On-line Monitoring System of Train Axle Temperature Wheel Temperature Based on Fiber Bragg Grating

A technology of fiber grating and monitoring system, which is applied to thermometers, thermometers, measuring heat and other directions with physical/chemical changes, can solve problems such as electromagnetic radiation and interference, and achieve the effects of strong waterproof ability, high precision and good stability

Active Publication Date: 2020-05-12
哈尔滨博检精测科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a fiber grating-based on-line monitoring system for train axle temperature and wheel temperature in order to overcome the problem that the traditional train wheel temperature and axle temperature monitoring system is susceptible to electromagnetic radiation and interference

Method used

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  • On-line Monitoring System of Train Axle Temperature Wheel Temperature Based on Fiber Bragg Grating
  • On-line Monitoring System of Train Axle Temperature Wheel Temperature Based on Fiber Bragg Grating
  • On-line Monitoring System of Train Axle Temperature Wheel Temperature Based on Fiber Bragg Grating

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specific Embodiment approach 1

[0027] Such as figure 1 As shown, the fiber grating-based train shaft temperature wheel temperature online monitoring system of the present invention includes

[0028] A positive integer number of fiber grating wheel temperature sensors 1 are installed on the axle for real-time acquisition of the axle temperature;

[0029] A positive integer number of fiber grating shaft temperature sensors 2 are installed on the carriage and facing the wheels for real-time acquisition of the temperature of the wheels;

[0030] The fiber grating external environment temperature sensor 3 is installed on the outside of the compartment for real-time collection of the external environment temperature;

[0031] And fiber grating wheel temperature shaft temperature data acquisition module 4, used to provide the working light source of fiber grating wheel temperature sensor 1, fiber grating shaft temperature sensor 2 and fiber grating external environment temperature sensor 3; receive fiber grating ...

specific Embodiment approach 2

[0036] The difference between the second embodiment and the first embodiment is that the fiber grating wheel temperature sensor 1 includes a wheel temperature sensor housing 5, a glass window 6, a wheel temperature measuring fiber grating 7 and a blackbody structure 8;

[0037] A side wall of the wheel temperature sensor housing 5 is sealed with a glass window 6; the wheel temperature sensor housing 5 is horizontally provided with a sheet metal substrate 9, one side of the metal substrate 9 is facing the glass window 6, and is in contact with the glass window 6. The black body structure 8 is filled between the glass windows 6; the other side of the metal base 9 is fixed with a wheel temperature measuring fiber grating 7, the wheel temperature measuring fiber grating 7 is located in the wheel temperature sensor housing 5, and the wheel temperature measuring fiber grating 7 The output end of the wheel temperature optical signal is connected to the optical signal input and output ...

specific Embodiment approach 3

[0044] The difference between the third embodiment and the second embodiment is that the insulation structure 10 is filled between the other side of the metal base 9 and the inner wall of the wheel temperature sensor housing 5 .

[0045] Such as image 3 As shown, the lower surface of the metal base 9 is surrounded by a thermal insulation structure 10, and the thermal insulation structure 10 uses high-temperature-resistant aluminum silicate ceramic fiber cotton with a thickness of 10 mm to 12 mm to surround the wheel temperature measuring fiber grating 7 and the metal base 9 to avoid heat. All the heat converted by the black body structure 8 acts on the fiber grating to ensure the measurement accuracy.

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Abstract

The invention relates to a fiber grating based online monitoring system for the axle and wheel temperature of a train and a temperature measuring device, and aims at overcoming the problems that a traditional train axle and wheel temperature monitoring is complex in structure and tends to bear electromagnetic radiation and interference, a non-contact infrared temperature measuring manner tends tobear interference, and an electronic axle temperature sensor is limited in the temperature measuring range. The system comprises a fiber grating wheel temperature sensor, a fiber grating axle temperature sensor, a fiber grating ambient temperature sensor and a fiber grating axle and wheel temperature data collection module. The system is wide in temperature measuring scope, resistant to interference, high in precision, high in windproof and waterproof capabilities, and high in long-term using stability; the sensor structure is simple, and the structure of the system is simple and convenient toinstall; and the axle and wheel temperature states are monitored in real time, a fault can be analyzed and judged in advance, and the operation safety of the train is improved.

Description

technical field [0001] The invention relates to a temperature measuring device, in particular to a temperature monitoring system for train wheels and axles. Background technique [0002] In recent years, with the advancement of science and technology, the speed of railway trains has become faster and heavier, in order to meet the needs of the rapid development of the national economy. With the increase of speed and load, the safety performance requirements of trains Also getting higher and higher. [0003] Axles and wheels are important parts to ensure the operation of the vehicle. When the train is running normally, the brake pads and wheels are in an open state. If the brake pads and wheels are in a closed state, they will cause mutual friction, which will cause serious wear of the wheels and cause frictional heat generation. , when the wear is serious, a large amount of abnormal heat will be generated, which will cause the deformation of the wheel in the slightest and ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K11/32
CPCG01K11/32
Inventor 吕国辉王亮
Owner 哈尔滨博检精测科技有限公司
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