EDR controller of automobile event data recording system

Abstract

The invention discloses an EDR controller of an automobile event data recording system. The EDR controller comprises a power supply module, an external interface module, a standby storage module, a collision detection module, an extension module and a main control module, the power supply module comprises a power supply protection circuit, a standby power supply circuit and a power supply voltagestabilizing circuit; and the input end of the power protection circuit is connected with an automobile power supply, and the output end of the power protection circuit is connected with the standby power supply circuit which is connected with the power voltage stabilizing circuit. The output end of the power supply voltage stabilizing circuit is connected with the standby storage module, the collision detection module, the expansion module and the main control module; the main control module is in bidirectional data transmission connection with the external interface module, the standby storage module, the extension module and the collision detection module; the external interface module CAN interface circuit is connected with an automobile OBD interface through a CAN gateway. The EDR controller is suitable for various types of vehicles, the application range of the EDR controller is expanded, and the data extraction efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of automobile electronics, in particular to an EDR controller of an automobile event data recording system. Background technique [0002] With the continuous increase of the number of domestic vehicles, traffic accidents caused by vehicle collisions have become a very common traffic safety problem. When a vehicle collision accident occurs, some auxiliary means such as traffic police on-site investigation and video recording are used to determine the operating state and responsibility of the accident vehicle. For some actual operating states of the vehicle before and after the collision, such as the relative position of the accelerator pedal, Information such as the state of the locking system, the state of the brake pedal, acceleration information, the relative position of the throttle valve, the engine speed, and the acceleration of the vehicle cannot obtain detailed and accurate information. [0003] The ...

AI Technical Summary

Problems solved by technology

[0004] The existing "automobile event data recording system" technical solution is to integrate the automobile event recording function into the airbag system. For passenger cars that have been mass-produced but the airbag system does not have the automobile event record Large passenger cars, buses, freight vehicles and other vehicles) but vehicles with vehicle event recording requirements, the use of existing technology products has certain limitations

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