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范文编号:TX352 范文字数:10667,页数:36 摘要 本文介绍一种基于AT89S52单片机设计的无线测温报警器，本设计采用了单片机外挂单总线温度传感器件DS18B20实现温度的采集，经过控制315MHZ无线通讯模块2262/2272进行温度数据的无线传输，传输距离达到20米以上，本设计分为采集发射、接收显示并输出控制两部分硬件电路进行设计制作，接收端设置了4个用户按钮，可对报警温度值进行设置，设置的数据通过IC2方式存储器AT24C02进行保存，结合了声光报警电路，当接收到的温度值超出用户预设的值时蜂鸣报警，同时通过继电器开关控制外部设备（如电铃），以达到提示并自动控制的目的。正文着重给出了硬件系统的各部分电路描述，介绍了AT89S52的功能与应用、无线模块的通讯原理、IC2方式数据存储器AT24C02的读写操作、以及各个电路模块的程序实现等内容。该电路设计应用领域广、可扩展性强。 关键词：无线通讯， 2262/2272，测温 ABSTRACT This paper describes a design based on single chip AT89S52 wireless temperature alarm, the design uses a single chip single-bus temperature sensor plug-piece collection of Temperature DS18B20, after controlling 315MHZ wireless communication module 2262/2272 for wireless transmission of temperature data, the transmission distance 20 meters above the launch of this design is divided into acquisition, display and output control to receive two hardware circuit design, the receiver set up four user buttons can be set alarm temperature set of data by way of memory AT24C02 IC2 be saved, a combination of sound and light alarm circuit, when received Temperature exceeds the value of the user Yushe O'clock alarm buzzer, Tong Shi Kai Guan control through relay external devices (such bells), to achieve the objective of Ti Shi and control. Text focuses on the hardware system are given parts of the circuit description, describes the function and application of AT89S52, wireless communication module principle, IC2 way reading and writing data memory AT24C02, as well as the procedures for the various circuit modules to achieve and so on. The wide field of circuit design applications, scalability, strong. Keywords: Wireless communications, 2262/2272, temperature measurement 摘要 I
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