基于无线通信的车辆主动防撞预警系统设计

提出了一种基于无线通信的车辆主动防撞预警系统，利用梯度方向直方图特征与支持向量机配合单目测距模型实现前方车辆的实时检测与测距，并利用传感器无线通信网络获取相对车速信息，最后根据相对车距与相对车速配合TTC预警模型实现碰撞预警。试验结果表明，系统平均处理时间100ms，车辆检测准确率95%，单目测距误差小于±4m，实现了实时、准确的车辆预警。

Design of the vehicle active collision warning system with wireless communication

A design of vehicle active collision prevention and warning system based on wireless is proposed. The real -time detection and ranging of vehicles in front of the vehicle is realized by using the histogram of orientedgradient feature and support vector machine with single visual range model. The relative speed information is obtained by using the sensor wireless communication network. Finally, collision warning is realized according to the TTC warning model with relative vehicle distance and relative speed. The results show that the average processing time of the system is 100ms, the vehicle detection accuracy is 95%, and the distance error of the single visual measurement is less than ±4m, realizing real-time and accurate vehicle warning.