基于手机信号遥控的水泵开关的设计论文含.doc

水控路制 介绍了以手机模块、双音多频解码集成电路HY9170为核心，通过现有的电信网络终端来进行远程遥控的远程控制系统的设计思路，并给出了其系统原理和电路图。远程控制系统遥控技术是通过一定的手段对被控物体实施一定距离控制的一种技术。同时，由于电信线路各地联网，因此，可以充分利用现有的网络资源跨省市，甚至跨越国家无限长度地进行遥控。该方法采用手机铃声控制，并利用不同的多音双频铃声来达到对开关的控制，最终实现远程遥控。 DTMF（Dual Tone Multi-frequency）即双音多频，最先应用于拨号系统。双音多频的拨号键盘是4×4的矩阵，每一行代表一个低频，每一列代表一个高频。每按一个键就发送一个高频和低频的正弦信号组合。本次课程设计是基于专用解码芯片HT9170的DTMF遥控器的设计和制作。 关键词：手机遥控，DTMF，HT9170,4028 Pump remotecontrol circuit Design and Development Abstract Introduced the mobile phone module, DTMF decoder IC HT9170 as the core, through existing telecommunications networks to carry out remote control terminal remote control system design ideas, and gives its systems for basic circuit. Remote Control Remote control system technology by means of the charged object must implement a certain distance from the control of a technology. Also, because parts of the telecommunications network lines, so you can make full use of existing network resources, provinces and cities, and even across the country carried out an infinite length of the remote control. The method uses cell phone ring tones control and the use of different polyphonic ring tones to achieve dual control of the switch. Ultimately remote controlDTMF (Dual Tone Multi-frequency) first was applied to dial-up system. Dual tone multi-frequency dial-up keyboard is 4 × 4 matrix. Each row represents a low-frequency, while each column represents a high frequency.When any button is pressed,it sends a signal constitute of a high-frequency signal and low frequency signal. This article is based on the specific decoder chip HT9170 to design and produce a dedicated DTMF remote control system. Key words: mobile phone control, DTMF, HT9170, 4028 目 录 1 绪论 1 2 总体设计方案 2 2.1设计思路 2 2.2系统框图 2 3 射频信号接收系统 2 3.1 接收信号流程 2 3.2 射频接收电路 3 3.3 射频接收放大电路 4 3.4 接收第一混频电路 4 3.5 13MHZ基准频率电路 5 3.6 锁相环电路 5 3.7 射频接收端性能指标 6 3.7.1 接收灵敏度 6 3.7.2 接收信号指示电平 6 3.7.3 接收信号指示质量 7 4 双音多频（DTMF）解码控制 7 4.1 DTMF定义 7 4.2双音多频（DTMF）铃声 8 4.3 DTMF解码器 8 4.3.1解码器介绍 8 4.3.2 HT9017管脚功