Bearing temperature monitoring system for high speed electric multiple units

Abstract

The invention provides a bearing temperature monitoring system for high speed electric multiple units. The bearing temperature monitoring system comprises two bearing temperature monitoring devices and a temperature acquiring module consisting of two temperature sensors; the internal communication between the two bearing temperature monitoring devices adopts an RS485 communication way to perform data exchange; the contents for the data exchange are life signals of various host machines, working states of the temperature acquiring module and acquired temperature values; the two bearing temperature monitoring devices are respectively used for sampling the temperature of the temperature sensors and comparing the sampled temperature with the preset pre-alarming / alarming temperature so as to make pre-alarm / alarm identification; the bearing temperature monitoring devices are used for controlling corresponding digital output, LED (light emitting diode) display and buzzer action, and sending the monitored data to a trail network control system through an external communication module. The bearing temperature monitoring system provided by the invention consists of two parts of bearing temperature monitoring devices and a temperature acquiring module, the integration degree is high, the structure is simple; by adopting a novel device and a software design method, the temperature monitoring precision, the interference resistance capability and working stability for the system are improved; the bearing temperature monitoring system can be used for reminding and guiding a driver to adopt protective measures and inspection operations in time, thus, the accident rate can be effectively reduced, and an active role in arrival on time and safety running of the electric multiple units can be played.

Description

technical field [0001] The invention relates to an axle temperature monitoring system, which is applied to the monitoring and alarm system of the train axle end temperature in a high-speed train set. Background technique [0002] With the continuous expansion of the railway speed range, the train speed increases and the traction power increases, which increases the impact, dynamic effect and vibration between the train and the rail, resulting in increased heat generation in the running part of the train and the large and small gears of the gearbox. When bearings and large and small gears wear or have defects, the abnormal heating will increase, which will affect the safety of train operation. [0003] At present, in high-speed EMU trains, the axle temperature monitoring system of the prior art scheme is composed of axle temperature monitoring device, temperature conversion device, input and output equipment, junction box under the car, temperature sensor and so on. The comp...

AI Technical Summary

Problems solved by technology

The composition of the system is complex, and the improper selection of the connectors connected between them leads to virtual connection and disconnection, and false alarms of axle temperature often occur. Moreover, many devices are installed under the vehicle. Due to the harsh working environment, their own IP protection level is also low. Insufficient, resulting in a reduction in the dielectric strength of the device, reducing the stability of the system

Repeatedly caused speed limit and parking, seriously affecting the operation order of my country's railways

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