Design and Implementation of Wireless Voice Transceiver System Based on Visible Light Communication
Aimed at the limitation of spectrum resource development of wireless access network,optical wireless communication technology and electromagnetic radiation,in order to explore a kind of untapped spectrum resources,green energy efficient data transmission,a wireless voice transceiver system based on visible light communication technology is designed.The sending end of the system uses the audio acquisition circuit to convert the voice signal into an electrical signal,and uses a filter circuit and a power amplifier circuit to filter and amplify the electrical signal,loads this electrical signal onto the LED wave through the LED drive circuit,the voice signal is radiated to the freedom of the airspace in the form of light signal,information is sent complete-ly.At the receiving end of the system,the photodiode is used to receive the optical signal and convert it into the electrical signal at the same time,the photoelectric detection circuit and power amplifier circuit are used to further process and amplify the elec-trical signal,the voice signal is output through the loudspeaker.The test results show that the system has an ideal voice com-munication effect within a distance of 15 to 55 cm.The system has the characteristics of high transmission rate and low energy loss,so this system can meet the overall design requirements,and it has a promotion of value in the applications.
万方数据
维普
