Solenoid valve service life prediction device and method based on multi-source data fusion

Abstract

The invention provides an electromagnetic valve service life prediction device and method based on multi-source data fusion. The device comprises a balanced air cylinder control module, a data acquisition module and a service life prediction module. The balance control module compares the target pressure of the balance air cylinder with the real-time pressure fed back by the sensor through the brake control unit, and controls the air charging and discharging of an electromagnetic valve in a PWM (Pulse Width Modulation) mode, so as to realize the accurate control of the pressure of the balance air cylinder; the data acquisition module uses a data acquisition card to acquire a pressure signal of an equalizing reservoir and a current signal of an electromagnetic valve group; the life prediction module is used for training two life prediction models by using the collected data, and predicting the life of the solenoid valve by fusing different model prediction results. The service life of the solenoid valve can be accurately predicted, the maintenance cost is reduced, and the utilization efficiency of the solenoid valve is improved.

Description

technical field [0001] The invention relates to the technical field of solenoid valves in rail vehicle braking systems, in particular to a solenoid valve life prediction device and method based on multi-source data fusion. Background technique [0002] With the continuous improvement of the running speed of high-speed trains, the safety and reliability of train operation have received extensive attention. The train braking system is the key system to realize train braking and mitigation. Its relief / braking is achieved by precisely controlling the pressure of the equalizing air cylinder, so that the train tube responds quickly to charge / exhaust air. The change of the air path between the balanced air cylinder and the train pipe and the charging / exhausting of the train pipe are realized by the actions of key components such as solenoid valves. With the increase of the service time of the system, if the solenoid valve is aging or malfunctioning, it will lead to a series of ch...

AI Technical Summary

Problems solved by technology

However, solenoid valves have multiple faults such as coil aging and lubricating oil failure. If the above two or more faults occur at the same time, the accuracy of predicting the remaining service life of the solenoid valve through a single current sensor is low.

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