A remote data real-time collection and analysis statistical system and method based on can-bus

Abstract

The present invention relates to the technical field of electronic control. A CAN-bus based remote data real-time collection, analysis and statistics system and method of the present invention, the system includes mobile terminal equipment and a remote center system, and the remote center system includes a DBC file processing device, a signal data decapsulation device, and a signal data decapsulation device. Preprocessing device, signal data statistics device, signal data abnormal processing device and signal data analysis chart generation device, the mobile terminal equipment communicates with the remote center system through the GSM / 3G network, the system solves the problem of complex and massive CAN data being reported in real time. Difficulties in analysis, conversion, statistics and storage can provide important auxiliary functions for vehicle research and development. The method of the present invention is applied to the above system, and the method greatly improves the efficiency of a series of operations such as extracting signal data from CAN data blocks, performing signal merging and conversion, and signal data statistics and storage.

Description

technical field [0001] The invention relates to the technical field of electronic control, in particular to a remote data real-time collection, analysis and statistics system and method based on CAN-bus. Background technique [0002] With the rapid development of the automobile industry, the demand for intelligent automotive electronic systems is becoming more and more significant, and the application of electronic control units is becoming more and more complex. With the application of CAN-bus in the automobile industry, the era of automobile intelligence is coming. [0003] CAN-bus is an on-vehicle network information transmission and communication system that realizes communication between automotive microcontrollers and exchanges information. As the integration of the interior of the car is getting higher and higher, the automotive electronic control system is becoming more and more complex, and the on-board network communication is becoming more and more complex. It is...

AI Technical Summary

Problems solved by technology

[0003] CAN-bus is an on-vehicle network information transmission and communication system that realizes communication between automotive microcontrollers and exchanges information. As the integration of the interior of the car is getting higher and higher, the automotive electronic control system is becoming more and more complex, and the on-board network communication is becoming more and more complex. It is becoming more and more complicated. CAN is used as the communication standard between the electronic control unit (hereinafter referred to as: ECU) system in the car. The external diagnostic equipment can collect the internal state data of the electronic control unit ECU according to the standard specification. However, because the ECU sends CAN- The frequency of broadcasting CAN data on the bus is in milliseconds, which is very fast, and the CAN2.0 standard stipulates that the data broadcast by each ECU to the CAN-bus (hereinafter referred to as: CAN data) is represented by 8 bytes. Theoretically, the number of signals that CAN data of each ECU can represent can reach 2 64 One, in practical applications, 2bit, 3bit, 4bit... and other combinations may be used to represent a signal, which leads to factors such as inconsistent signal data bits and unfixed data offsets, which lead to the remote center system being in progress. The real-time acquisition, extraction, merging, conversion and statistical work of CAN data is very complex and inefficient, and reduces the reliability of the system and increases the failure rate

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