The invention belongs to the technical field of automobiles, and relates to a driver state monitoring system conforming to functional safety. The system comprises a sensing part, an operation part and a monitoring part. The sensing part comprises a camera module and is used for realizing facial state recognition of a driver; the operation part comprises a power supply module, a video processing unit, a CAN communication module and a data storage unit; the monitoring part comprises a micro control unit MCU; the camera module transmits a video signal to the video processing unit at a set rate, and the video processing unit processes the received video signal and is responsible for Ethernet transmission; the CAN communication module is responsible for CAN communication between the driver state monitoring system and the vehicle ADAS controller; and the MCU is responsible for monitoring the state of the video processing unit so as to detect errors in a program and can process the errors in real time when the errors occur. According to the system, the safety of a driver state monitoring system can be greatly improved, ASIL-level decomposition is performed on a hardware architecture system, the development difficulty of the system can be effectively reduced, and the development period of the system can be effectively shortened.
本发明属于汽车技术领域,涉及一种符合功能安全的驾驶员状态监测系统。包括感知部分、运算部分,监测部分;感知部分包含摄像头模组,实现驾驶员的面部状态识别;运算部分包括电源模块、视频处理单元、CAN通信模块、数据存储单元;监测部分包括微控制单元MCU;摄像头模组以设定速率传输视频信号给视频处理单元,视频处理单元处理接收到的视频信号,并负责以太网传输;CAN通信模块负责驾驶员状态监测系统与车辆ADAS控制器之间的CAN通信。微控制单元MCU负责监测视频处理单元的状态,以检测程序中的错误,并在出现错误时能实时处理;本发明可以极大地提高驾驶员状态监测系统的安全性,对硬件架构系统进行ASIL级别分解,能有效降低系统开发难度及开发周期。
Driver state monitoring system conforming to functional safety
一种符合功能安全的驾驶员状态监测系统
2022-02-01
Patent
Electronic Resource
Chinese
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