《车载MP3无线调频发射器----发射与控制》.docVIP

分类号：TN836 U D C：D10621-408-(2006)HYPERLINK \l _top \o 由教务处统一分配,请班干部和教务处联系0285-0 密 级：公 开 编 号：2002022096 成都信息工程学院 学位论文 车载MP3无线调频发射器 发射与控制 论文作者姓名：张超申请学位专业：电子信息工程申请学位类别：工学学士指导教师姓名（职称）：吴启满（实验师）论文提交日期：2006年6 月 4日 车载MP3无线调频发射器 摘 要 进入21世纪,随着人们物质生活的提高，舒适性、方便性已经成为电子产品的重要考虑因素，基于此而设计的车载MP3转化发射器就是这样一个较为人性化的产品,它大大提高车内播放音乐的方便性和安全性。车载MP3转化发射器其实就是一个新型的数字化调频发射器，它具有将音频信号转化成为调频信号发射出去的作用,具有方便携带,使用简单,频率稳定、发射频率在88.0MHZ至110.0MHZ范围内任意可设等特点。而本文所介绍的调频发射电路的设计，采用的是无线音频传输集成芯片BH1415F，其发射频率采用AT89C52单片机控制，外围电路配以数字化液晶模块1602显示发射频率，操作更加直观方便,此电路发射频率较为稳定，抗干扰能力较强，适合于将各种音频信号转化为一定频率的调频信号进行无线发射。 关键词： BH1415F AT89C52 数字化控制 LCD1602 调频发射 Wireless Frequency Modulation in the Car’s MP3 Abstract Entering the 21 century, as the people’s material life improving, the comfort and convenience have become the important factors of electronic products. The car year change of MP3’s emitter is just the humanization product designed basing on that, and it greatly raises the convenience and safety of music broadcasting inside the cars. The car year change of MP3’s emitter is a new digitization frequency modulation emitter. It can change the frequency signal into frequency modulation signal, and it possesses the characteristics such as conveniently carrying, simply using, steadily frequency, and the launch frequency can set to randomly from the scope of 88.0 MHZ to 110.0 MHZ. This paper introduces one kind of design of frequency modulation launch circuit. It uses the wireless frequency transmission chip BH1415F, its emissive is controlled by AT89C52 SCM (Single Chip Micyoco), and the peripheral circuit integrates the crystal module1602 showing the launch frequency. The operation is more directly and convenient, and the frequency launched by the circuit is comparatively stable and has strong anti-jamming ability. It is fit for changing all kinds of frequency signal into a fixed frequency modulation signal of frequency and launching wi