Vehicle fault diagnosis method based on Internet of Things

Abstract

The invention provides a vehicle fault diagnosis method based on the Internet of Things. The method can achieve the quick obtaining of the original fault information of a vehicle in each time period.The information acquisition unit acquires CAN data; the CAN data is stored in a first memory; a folder is estabished, the first protocol diagnosis module analyzes the CAN data and obtains fault codes,the information transmission unit sends the fault codes to the cloud platform; a second protocol analysis module in the cloud platform analyzes the fault codes, obtains g fault data, stores the faultdata in a second memory, the fault diagnosis module diagnoses fault data and displays the fault data through the display module; the short message management platform sends a short message to operation and maintenance personnel, the cloud platform issues an instruction for obtaining CAN data to the vehicle-mounted terminal, the vehicle-mounted terminal uploads a required folder to the cloud platform, and the operation and maintenance personnel downloads the CAN data in a corresponding time period through the cloud platform and analyzes fault data into data during vehicle operation.

Description

technical field [0001] The invention belongs to the technical field of remote monitoring of electric vehicles and hybrid vehicles, in particular to a vehicle fault diagnosis method based on the Internet of Things. Background technique [0002] At present, hybrid vehicles and electric vehicles are equipped with a fault diagnosis protocol. The fault diagnosis protocol is connected to the sensor to collect and store the fault information of the vehicle, which can solve the problem that the fault information cannot be obtained due to untimely diagnosis and disappearance of vehicle faults. The problem. The current vehicle fault acquisition method is on-site acquisition. When the vehicle fails, the owner drives the vehicle to the maintenance point or the professional maintenance personnel arrives at the scene to use an external device to connect to the vehicle terminal to obtain fault information. For vehicles that have been in motion for a long time It is said that when a fault ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem in the prior art that it is inconvenient for operation and maintenance personnel to quickly obtain the original data of vehicle faults within a certain period of time, resulting in the problem that vehicle faults cannot be resolved in a timely manner, the present invention provides a method for diagnosing vehicle faults based on the Internet of Things. It can quickly obtain the original data of vehicle faults within a certain period of time, which is convenient for operation and maintenance personnel to quickly and accurately find vehicle faults

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