The edr system is installed on the car to record the driving status and other information, so as to provide evidence in traffic disputes. In modern diesel trucks, accidents often occur when the engine fails or the speed changes suddenly, and the accident data recorder records the data at this time. After the accident, the data collected from the accident data recorder can be used to analyze the cause of the accident and determine the responsible person. This device is tamper-proof and readable, similar to the black box on the plane.
Edr is a recorder of automobile driving events, but it is also different from our traditional driving recorder. It can't record the driving data of vehicles, drivers' driving operations and so on, so people want to know more data when traffic accidents happen, and it is difficult to do it without edr system.
Introduction to the composition of EDR system
The system hardware of EDR consists of sensor, processor, storage unit and standby power supply, which are used to monitor and collect data, process data, save data and ensure self-power supply ability respectively. Structurally, the hardware part of EDR mainly includes single chip microcomputer, power module, storage module and sensor module.
Sensors are responsible for data acquisition (including vehicle speed, driver's seat belt status, turn signal switch status, brake pedal position, etc.). ). The main control chip analyzes and compresses the collected state information, writes it into the storage unit, and receives and sends real-time data through the automobile CAN data bus.