【摘要】 将可见光通信(VLC)技术与射频标签(RFID)技术相结合,设计制作了一个可见光与RFID的双模无线控制的门禁软硬件系统。多种环境下对系统进行了测试。结果表明,可见光接收信号眼图清晰,系统稳定,传输性能较好,控制效果较理想,可以解决设备接入"最后10m"的问题,有很好的应用推广价值。更多还原

【Abstract】 A dual-mode wireless control system based on visible light communication(VLC)and radio frequency identification(RFID)is researched in this paper.Design,principle and some key techniques of the control system are shown.The software and hardware of a dual-mode door control system are designed as an example.It works in 10 kHz on-off keying non-return to zero(OOK-NRZ)differential Manchester encoded white light and 125 kHz RFID Wiegand protocol.The control system is tested in many situations like the outdoor without direct sunlight and the indoor with 50 Hz incandescent lamp interference.It accomplishes a stable and good performance remote control in about 10 mdistance.Eye pattern is clear when the visible light RX signal is tested by the oscilloscope.We can see a stable control system with good transmission performance and ideal control effect.It remedies some defects of an RFID or VLC control system and can be used to solve the latest 10 mproblem for the devices connected to theinternet of things.更多还原