【摘要】 目前，共享汽车以及车险缴纳基本上都以时间为计量单位，而忽视了车辆的使用情况。同时，驾驶员的不良驾驶行为也是造成交通事故的主要原因。采用图像处理的方式受到了环境、耗电量、处理能力和驾驶员隐私泄露风险的限制。为了更好地监督车辆的使用情况，实现对车辆的有效管理，设计了一款车辆行驶状态信息采集系统。系统以STM32F103ZET6为核心处理器，通过IIC通信实现三轴加速度、三轴角速度信息的采集；通过串口通信和DMA(direct memory access)结合的方式实现经纬度、海拔高度等定位信息的采集；设计了通信协议对数据进行封装，使用4G通信方式进行下位机和上位机之间的数据交互；设计了SDIO通信的方式完成4G通信信号弱时数据在SD卡中的暂时存储；设计的电源模块为系统的各个部分分别提供12 V、5 V和3.3 V的稳定电压。经过测试，该系统能够稳定地实现车辆行驶中的加速度、角速度和定位数据的采集，为车辆的使用情况和驾驶行为分析提供了数据基础。更多还原

【Abstract】 At present, car-sharing and car-insurance payments are largely time-based, ignoring the use of vehicles. At the same time, bad driving behavior is also the main reason for traffic accidents. The image processing is limited by the environment, power consumption, processing ability and the risk of driver privacy leakage. In order to better monitor the use of vehicles and realize the effective management of vehicles, a vehicle driving state information acquisition system is designed. The system uses STM32 F103 ZET6 as the core processor to realize the acquisition of triaxial acceleration and triaxial angular velocity information through IIC communication. Through the combination of serial communication and DMA(direct memory access),the location information such as longitude, latitude and altitude can be collected. The communication protocol is designed to encapsulate the data, and the 4 G communication mode is used to exchange data between the lower computer and the upper computer. SDIO communication is designed to temporarily store the weak data of 4 G communication signal in the SD card. The power supply module provides 12 V,5 V and 3.3 V stable voltage for each part of the system. After testing, the system can stably realize the acquisition of vehicle acceleration, angular velocity and positioning data, which provides the basis for the use of vehicles and driving behavior analysis.更多还原