【作者】 程长；

【导师】 凌振宝；

【作者基本信息】 吉林大学 ， 仪器仪表工程， 2010， 硕士

【摘要】 数字化设备的有线连接给人们随时随地与信息网络连接和通信带来了许多不便。用无线通信连接技术实现语音和数据传输，已经成为一种趋势。本文主要研究语音信号传输系统下位机（单片机）部分的内容。提出了一种基于低功耗低成本条件下语音信号无线传输的解决方案。设计并制作语音信号采集部分的硬件电路，实现对语音信号的有效调理，便于A/D进行采集。提出基于单片机实现U盘数据读写的一种解决方案。设计并编写基于USB接口芯片CH375的U盘读写模块的软件控制程序，以实现将采集到的数据以文件形式存储，并适时将数据读出。安装调试蓝牙模块，实现下位机和PC机间的无线通讯。利用市售通用的蓝牙适配器与单片机部分的蓝牙模块进行搜寻、配对、连接等操作，实现基于蓝牙的无线数据传输。对系统进行测试，对于出现的问题作进一步的分析，提出合理的改进意见。最后，针对要在上位机（PC机）上实现将语音原始二进制数据还原为声音的最终目标，提出了一种切实可行的解决方案。更多还原

【Abstract】 Designed and actualized the front signal conditioning circuit which based onsurvey and simulation. Acquainted the theory of R/W module and protocol of CH375U disk minutely, and analyzed control sequence of it. Compilation and test of thecontrol program had been done for later applications. Learned Bluetooth technologyfurther and purchased Bluetooth modules refer to environment and design. Practicedand operated the system by hand till freely.By centering on MSP430F1611 single chip MCU，the system had beenconstructed initially. All the modules had been combined into a union for debugging.A bottleneck about writing speed of U disk has been picked out. Through analysis ofthe system and in order to revise the design less, a double buffer in RAM has beenopened up for solving the problem of the issue.Optimized and put in extra function of the system. Considered the inherentbottleneck of the system deeply and brought forward a method of WAV formattransfer for voice retrieval.It’s a pity that the algorithm of audio signal disposal and high-level languageprogram for file transfer had not been achieved completely. However, the idea and themethod of the design were proved to be practical. Next step the related issue would becontinued and solved for fulfilling all the target functions of the system.更多还原