毕业论文-基于AT89C51单片机的串行通信发射机的设计与实现.doc

l 中文摘要 单片机串行通信发射机采用串行工作方式，发射并显示两位数字信息，既显示00-99，使数据能够在不同地方传递。硬件部分主要分两大块，由AT89C51和多个按键组成的控制模块，包括时钟电路、控制信号电路，时钟采用6MHZ晶振和30pF的电容来组成内部时钟方式，控制信号用手动开关来控制，P1口来控制，P2、P3口产生信号并通过共阳极数码管来显示，软件采用汇编语言来编写，发射程序在通信协议一致的情况下完成数据的发射，同时显示程序对发射的数据加以显示。单片机无线串行接口电路由MICRF102单片发射器芯片，工作在300~440 MHz ISM频段；具有ASK调制和解调能力，抗干扰能力强，适合工业控制应用；采用PLL频率合成技术，频率稳定性好；接收灵敏度高达 －96dBm，最大发射功率达－2.5dBm；数据速率可达2Kb/s；低工作电压：4.75~5.5V；功耗低，接收时电流3mA，发射时电流7.75mA，接收待机状态仅为0.5μA，发射待机状态仅为1.0μA；可用于单片机之间的串行数据无线传输，也可在单片机数据采集、遥测遥控等系统中应用。 关键词：程序流程图 通信协议 编译软件的使用和PLDA的使用 烧片 Summary SCM serial communication transmitter used serial work, and to launch two digital information display, both show that 00-99, so that data can pass in different places. Some of the major hardware sub-two blocks from the AT89C51 and a number of key components of the control module, including the clock circuit, control signal circuits, a 6 MHZ crystal clock and 30 pF of capacitance to form internal clock, control signals used to manually switch To control, P1 mouth to control, P2, P3 and I have a signal through the anode of the digital display, the software used to prepare the assembly language, launched in the communications procedures under the agreement completed the launch of the data, also showed that the process launched Data for display. SCM wireless serial interface circuit fired by the MICRF102 single chip, working in 300 ~ 440 MHz ISM band, with ASK modulation and demodulation capability, anti-interference capability and suitable for industrial control applications; PLL frequency of use of technology, frequency stability Of good receiver sensitivity of up to -96 dBm, the maximum emission power of -2.5 dBm; data rates up to 2 Kb / s; low voltage: 4.75 ~ 5.5 V; low power consumption, to receive at current 3 mA, launched at the current 7.75 mA, receive Standby only 0.5 μ A, fired standby only 1.0 μ A; SCM can be used for the serial data between wireless transmission, but also in SCM data acquisition, telemetry systems in remote applications. Keywords: