A method for recording and selecting fault information of rail transit vehicle air-conditioning equipment

Abstract

A method for recording and selecting fault information of air-conditioning equipment of rail transit vehicles, relating to the technical field of air-conditioning equipment of rail transit vehicles, in particular to a method for recording operation information before and after an air-conditioning fault occurs. The air conditioner controller records the operation information of the air conditioner, and the computer is connected with the air conditioner controller to realize information interaction and data transmission. The air conditioner controller is equipped with a memory for storing the operation information of the air conditioner. Collect the running status of the air conditioner every N seconds and record it in the memory; when the air conditioner fails, the air conditioner controller will record the fault information into the memory, and the fault information includes the name of the fault, the time of occurrence, and the fault level; when the computer and the air conditioner control When the controller is connected, the computer reads the information in the memory, finds the location of the fault information, saves the fault information, and selects the M air conditioner operating states before and after the fault information to save.

Description

technical field [0001] The invention relates to the technical field of rail transit vehicle air-conditioning equipment, in particular to a method for recording operation information before and after an air-conditioning failure occurs. Background technique [0002] The air conditioning system for rail transit vehicles, especially the air conditioner controlled by the controller, can be connected to the controller through a portable computer (hereinafter referred to as PTU) equipped with host computer monitoring software to realize information interaction and data transmission. At present, most air-conditioning controllers can store hundreds of historical air-conditioning fault records, which are connected to it through the PTU to display the name, occurrence time, level, repetition times, air-conditioning operation mode, temperature and input and output status of each fault when the fault occurs. It can quickly download fault data through PTU, and save the information to PTU....

AI Technical Summary

Problems solved by technology

[0003] The current situation is that when the air conditioner breaks down and needs to be checked, because the controller only stores information when the failure occurs, the data information downloaded from the PTU can only reflect the state at the time of the failure, and cannot show the status before and after the failure. The operating status and changing trend of the air conditioner (including dynamic information such as operating mode switching, start-stop status of each main component, temperature change, system pressure change, power supply voltage and operating current), only one piece of static information, no matter how complete the parameters are. It is convenient to find and determine the cause of the fault accurately and quickly

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