基于大功率白光 LED 的可见光通信 摘要
本系统设计以 TI 公司的 MSP430F149 为主控芯片。通过测试,完成了基于大功率白光 LED 的可见光 通信,各项指标均能较好地完成设计要求 同时 MSP430 系列单片机功耗低,分别对信号进行放大、调制、解调与供电等,从而实现了可见 光对信号的传输。发送设备和接收设备由放大电路、音频锁相环 LM567、光电调制 电路、电源电路等模块构成,完成对发射设备的温度监测、电压采集及 信号传输记录等功能。该通信设备由发送装 置和接收设备两部分组成。
关键字：MSP430F149;可见光通信;语音传输;m 序列
AbstractThis system designs with MSP430F149 as main control chip of TI company, completed the visible light communication, based on high power white LED for two way voice signal and m sequence signal without distortion of the transmission.The communication device consists of two parts, the transmitting and receiving device.Sending device and receiving device by amplifying circuit, audio phase-locked loop LM567, electro-optical modulation circuit, power circuit, such as modules, respectively for signal amplification, modulation and demodulation, and electricity, etc., thus realize signal through visible light transmission.At the same time use MSP430F149 complete temperature detection of device, voltage acquisition and signal transmission record, etc.Through testing, this design system performance is good, all the indexes can be well complete design requirements for MSP430 series MCU low power consumption at the same time, satisfy the current low carbon economy development concept.
Keywords: MSP430F149, Visible light communication, Voice transmission, m sequence
2.2 锁相环的选择 4
2.4 显示模块的选择 4
3、系统方案详细设计 5
5.2.1 语音传输模块测试 9
,本设计系统性能良好,实现了对两路语音信号、m 序列信号和单音信号的无失真传输。满足当前低碳经济的发展理念