Method for recording and selecting fault information of rail transit vehicle air conditioning equipment

Abstract

The invention provides a method for recording and selecting fault information of rail transit vehicle air conditioning equipment, and relates to the technical field of the rail transit vehicle air conditioning equipment, in particular to a method for recording operating information generated before and after air conditioning faults. An air conditioning controller records the air conditioning operating information, a computer is connected with the air conditioning controller, information interaction and data transmission are achieved, and the air conditioning controller is provided with a memorizer for storing the air conditioning operating information. The method for recording and selecting the fault information includes the following steps that after the air conditioning equipment is started, the air conditioning controller acquires air conditioning operating states at a time every N seconds and records the air conditioning operating states in the memorizer; when an air conditioner breaks down, the air conditioning controller records the fault information in the memorizer, and the fault information comprises fault names, occurrence time and fault grades; when the computer is connected with the air conditioning controller, the computer reads the information in the memorizer, the position of the fault information is found, the fault information is preserved, and the M air conditioning operating states generated before and after the fault information are selected and preserved.

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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