IPM fault detection and protection device and method for rail vehicle door control
A fault detection, rail vehicle technology, applied in general control systems, control/regulation systems, testing/monitoring control systems, etc., can solve the problem of inappropriate and effective processing, inability to determine what kind of faults in IPM, and reliable operation of rail vehicles to reduce the time, improve operational efficiency, and ensure reliability
Active Publication Date: 2021-03-30
NANJING KANGNI ELECTRONICS TECH
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Problems solved by technology
[0005] Purpose: In order to overcome the IPM fault detection and protection method existing in the prior art, only one fault signal is sent, and the CPU cannot determine what kind of fault has occurred in the IPM, and cannot perform corresponding and effective processing for the specific fault mode, resulting in As long as the fault signal is received, the CPU will turn off the control signal of the IPM, which will have a great impact on the operational reliability of the rail vehicle. The invention provides a device and method for IPM fault detection and protection for rail vehicle door control
Method used
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[0035] Such as Figure 5 As shown, the signal VFO representing the temperature is generated inside the IPM, and the VFO is amplified by the operational amplifier U5B and the resistors R18, R19, R21, and R22 to obtain a linear voltage value, which is sent to the CPU for fault detection and protection logic control The software module calculates the current IPM temperature by looking up the table, and judges whether the IPM is overheated.
[0036] Such as Figure 6 As shown, the IPM control voltage VDD1 is sent to the CPU after being divided by the resistors R13 and R15. The fault detection and protection logic control software module in the CPU calculates the current IPM control voltage according to the voltage correspondence, and performs a check on the state of the IPM control voltage. judge. IPM control voltage VDD2 detection circuit is the same.
[0037] Such as Figure 7 As shown, the CPU sends the ENVDD control signal to control the on and off of the transistor Q1 thr...
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The invention discloses an IPM fault detection and protection device and method for rail vehicle door control. An IPM control power supply detection and protection module, an IPM current detection andprotection module and an IPM temperature detection and protection module respectively perform corresponding detection and protection on an IPM, and each module generates a specific protection signaland sends the specific protection signal to a CPU as a basis for CPU judgment. A fault detection and protection logic control module in the CPU respectively processes the IPM according to different protection signals. On one hand, when the IPM can influence the operation safety of the rail vehicle, the control signal of the IPM can be timely turned off, the driving motor is stopped, and the personal safety of passengers is ensured; and on the other hand, when the IPM does not influence the safety of the vehicle door, the control signal of the IPM is not immediately turned off, but is processedaccording to the actual situation, so that the operation reliability of the rail vehicle is ensured, and the operation efficiency is improved.
Description
technical field [0001] The invention relates to an IPM fault detection and protection device and method for rail vehicle door control, belonging to the technical field of IPM module monitoring. Background technique [0002] With the rapid development of rail transit, operators have put forward more and more strict requirements on the safety and reliability of rail vehicles, and the door controller system plays a very important role in the operation of rail vehicles, which is to ensure the safety of passengers. important equipment. [0003] The rail vehicle door controller uses the IPM module to drive the motor, and then controls the opening and closing of the door. Therefore, as an important part of the door controller, the IPM’s quality and performance directly affect the reliability and safety of the door system. The fault detection of the IPM and protection are critical. [0004] At present, when the IPM in the door controller breaks down, the IPM will only generate an ...
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CPCG05B23/027
Inventor陆驰宇周洲许洪强彭先胜杨帆任洁戴其俊
OwnerNANJING KANGNI ELECTRONICS TECH