Vehicle remote data acquisition system based on CAN (Controller Area Network) bus

Abstract

The invention discloses a vehicle remote data acquisition system based on a CAN (Controller Area Network) bus, comprising a remote server and at least one vehicle-mounted remote data acquisition device, wherein each vehicle-mounted remote data acquisition device comprises a processor module, a CAN bus communication module, a voltage comparison module and a radio communication module; input signals of the voltage comparison modules are switching value signals and pulse value signals which are output by vehicle equipment; analog value signals output by the vehicle equipment are processed by an engine ECU (Electronic Control Unit), then transmitted to the CAN bus and received by the CAN bus communication modules; the CAN bus communication module are also used for receiving equipment signals hung on the CAN bus, and the output ends of the CAN bus communication modules are connected with the processor modules through an SPI (Serial Peripheral Interface) bus; and the radio communication modules are used for carrying out radio communication with the server. The system can acquire various information of the vehicle equipment on a plurality of vehicles, data is transmitted to the server for storing through radio communication, and reliable references are provided for the maintenance and the management of the vehicles according to acquired data.

Description

technical field [0001] The invention relates to a remote data collection system for collecting various equipment data on vehicles. Background technique [0002] With the rapid development of on-board electronic products, more and more electronic auxiliary control devices are added to passenger cars. These devices are high-tech electronic products. It is difficult to analyze or describe the cause of an electronic product failure. Therefore, it is difficult for vehicle operating companies and bus manufacturers to obtain first-hand information on vehicle operation status and failure causes in a timely manner, and it is difficult to effectively control subsequent operation system management, improvement of driving habits, and troubleshooting and maintenance. [0003] The data collection method of existing vehicles is that professionals carry special equipment to the car, and connect to the K line of the OBD (On-Board Diagnostics, on-board automatic diagnosis system) diagnostic ...

AI Technical Summary

Problems solved by technology

[0004] 1. Professional service personnel are required to go to the real vehicle, which is time-consuming and laborious. The collection of driving data requires specialized personnel to follow the vehicle for testing, and also needs to carry laptops, inverters and other related equipment;

[0005] 2. Less data is collected and the scope of diagnosis is limited. Special diagnostic equipment is required for engines, gearboxes, ABS (Anti-lock Braking System, anti-lock braking system), and the diagnostic equipment for one component cannot diagnose the faults of other equipment at the same time , and the compatibility is poor, often a set of diagnostic equipment can only diagnose the engine or parts of the same company;

[0006] 3. In order to collect a variety of data, the same vehicle needs several different diagnostic equipment, but the dedicated collection tools are expensive, and it is impossible to install them on every vehicle, and it is impossible to collect data every day;

[0007] 4. For the switching signal and pulse signal of the equipment, there are many types and various types, which are not easy to collect, and the statistics are more complicated;

[0008] 5. The collected data is inconvenient to manage and easy to lose

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