双工无线语音数据传输系统的设计-毕业论文（设计）.docVIP

PAGE 双工无线语音数据传输系统的设计 学生：刘X X，物理与信息工程学院 指导老师：肖X X，X X大学 摘 要 电通信系统的作用，是将产生消息的信源信息发送到一个或多个目的地。一般情况下，通信系统可以用功能框图进行表示。信源所产生的信息可以是声音（语音图像），图像（影像源），或以某些特殊语言如英语，日语，德语，法语等写成的纯文本。产生信息的任何一个信源，都有一个基本的特征. 通信系统的核心由三个部分构成，即发信机，信道和接收机。 本设计的核心芯片为D1800，它作为收音接收专用集成电路，功放部分选用D2822。对讲的发射部分采用两级放大电路，第一级为振荡兼放大电路：第二级为发射部分，采用专用的发射管使发射效率和对讲距离大大提高。它具有造型美观、体积小、外围元件少、灵敏度极高、性能稳定、耗电省、输出功率大等优点。它既能收到电台又能相互对讲。接收机的参数：调频波段30MHZ-90 MHZ；工作电源电压范围2.5-5V；静态电流13.5mA；信噪比80dB;谐波失真0.8%;输出功率≥350mA。发射机工作电流：18mA，对讲距离50-100米。 关 键 词 双工无线语音数据传输系统、信息、芯片D1800 Triple wireless voice data transmission system design Student : Liu figure, physics and information engineering colleges Instructor : Xiao Yun hong, Jianghan University ABSTRACT Electrical communication systems are designed to send messages or information from a source that generates the message to one more destinations. In general, a communication system can be represented by the functional block diagram shown . The information generated by the source may be of the form of voice (speech source), a picture (image source), or plain text in some particular language, such as English , Japanese, German , French, etc. An essential feature of any source that generates information is that its output is described in probabilistic terms。 The heart of the communication system consists of three basic parts, namely, the transmitter, the channel, and the receiver. The core chip design for D1800, as a radio host ASIC, Gongfang some choice D2822. The launch of the enlarged phone circuit levels, the first level of vibration and enlarged circuit : for the second stage of the launch, the launch of a dedicated launch distance greatly enhance efficiency and accuracy. It has shaped, stylish, small size, low external components, high sensitivity, stable performance, consumption provinces, such as the advantages of output. It will also cross check received radio.The receiver parameters : FM band 30MHZ-90MHZ; work 2.5-5V; static electricity supply voltage range 13.5mA; Xinzaobi 80dB;