基于可见光通信的停车场泊车自动导航系统

为满足车辆定位需求并实现高效率停车场泊车导航,设计基于可见光通信的停车场泊车自动导航系统,系统的车位信息监测模块通过结合泊车位上方LED照明装置和车位地面的光敏电阻形成光电检测装置,获取停车场车位状态信息后,经STM32单片机产生频率差异显著方波信号;可见光信号调制模块依据可见光通信原理,将方波信号经信号调制电路转换成电信号,驱动停车位的LED灯光源,传输光信号至定位导航模块;定位导航模块利用内置摄像头接收可见光定位信号,经信号解析、定位等步骤获取可见光信号来源位置信息,实现停车场泊车自动导航。实验结果表明,该系统可有效满足车辆定位需求,车辆定位误差控制在0.20 m范围内,且泊车导航所需时间较短,具备较高泊车导航效率。

Parking automatic navigation system based on visible light communication

In order to meet the needs of vehicle positioning and achieve high-efficiency parking navigation,the parking automatic navigation system based on visible light communication is designed.The system’s parking information monitoring module combines the LED lighting device above the parking space and the photosensitive resistance of the parking ground to form the photoelectric detection device.After obtaining the parking status information,the frequency difference is significant through STM32 single-chip microcomputer Square wave signal;according to the principle of visible light communication,the visible light signal modulation module converts the square wave signal into an electrical signal through the signal modulation circuit,drives the LED light source of the parking lot,and transmits the light signal to the positioning and navigation module;the positioning and navigation module receives the visible light positioning signal by using the built-in camera,and obtains the source and location information of the visible light signal through the signal analysis and positioning steps Parking auto navigation in the parking lot.The experimental results show that the system can effectively meet the needs of vehicle positioning,the vehicle positioning error is controlled within 0.20 m,and the parking navigation time is short,with high parking navigation efficiency.