Full-data automobile event data recording system EDR

Abstract

The invention relates to the technical field of automobile accident data recording systems, in particular to a full-data automobile accident data recording system EDR, which comprises: an automobile body part comprising an automobile body BAT, an automobile body ACC, an automobile body CAN / LIN, an automobile body CANFD and an automobile body OBD, and a full-data EDR controller part comprising a power supply module, an AD sampling module, a CAN / LIN module, a CANFD module, a clock circuit module, a super capacitor module, a storage module, a USB serial port module, an MCU module and a G-sensor module. According to the invention, real-time reading and recording of A-type signals such as vehicle engine rotating speed, vehicle speed, accelerator pedal and brake signals can be realized through a vehicle body CAN / LIN bus, recording of B-type data is realized through a CANFD bus, requirements of national EDR compulsory laws and regulations are met, the problem that full data is required to be recorded due to the fact that a vehicle is not provided with an air bag controller, is not provided with clock time service and requires data volume is solved, and a set of circuit and program design scheme with functions of recording, detecting, self-checking, diagnosing and the like is provided.

Description

technical field [0001] The invention relates to the technical field of automobile accident data recording systems, in particular to an all-data automobile event data recording system EDR. Background technique [0002] my country is a transportation powerhouse, the number of cars is increasing steadily, and traffic accidents occur frequently. After traffic accidents, road evidence collection, personnel evidence collection, vehicle data collection, etc. often become the object of disputes, which causes great difficulties in judging the responsibility of the traffic control department. Insurance compensation, personal safety, property safety, vehicle quality, etc. cannot be truly analyzed, and may even lead to civil lawsuits and criminal lawsuits. In foreign countries, EDR has become a must-installed product for vehicles leaving the factory, and it will soon be implemented in China. Therefore, the realization of the automobile event data recording system (EDR) is of great signif...

AI Technical Summary

Problems solved by technology

[0003] At present, some vehicles have been equipped with automotive event data recording system (EDR), but they are all integrated in the vehicle airbag control module. There are still a large number of vehicles in the market without airbag control modules. controller, which will bring about an increase in vehicle manufacturing cost, which is unacceptable to both the car factory and the user. Therefore, the present invention involving an independently installed vehicle event data recording system can perfectly solve this contradiction, and can meet the needs of those who are not equipped with an airbag controller. Vehicles and vehicles equipped with EDR still need to be equipped with an independent EDR system

[0004] Further inquire about the existing domestic intellectual property rights, the analysis of the patent CN 111071185A under review: it only detects and stores the acceleration in the X direction, and extracts information through the CAN bus, while the national standard required to be installed in GB7258 "Technical Conditions for Motor Vehicle Operation Safety" "Automotive Event Data Recording System", the EDR controller needs to record 17 items of type A data and 43 items of type B data. Obviously, the CAN bus load, communication speed, and bandwidth occupancy cannot be satisfied. In addition, many vehicles are not equipped with time at present. For the timing module, EDR cannot store current time information, so the EDR products currently being declared can only meet the simple information storage and simple acceleration storage of vehicles. For vehicles that need to record EDR national standard A data and B data, use existing technology products has certain limitations

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