文档介绍：摘要
随着家用电器种类的增加和无线遥控产品的普及,红外遥控器的使用频率越来越高,针对国内红外遥控学****技术成熟,但产品化程度低的特点,本文自主设计一种具有红外学****和触屏显示功能的红外遥控器,借此促进红外遥控学****技术在国内市场的产品化推广。
在红外解码方面,传统方法采用单片机中断或者查询方式采集红外信号,环境不理想情况下可能需要多次解码,本文借助电脑辅助记录全波形,通过相关软件优化波形,解码一次即可成功;在红外发射方面,本文通过实验发现红外发射距离受载波占空比和红外二极管贯通电流影响,通过调试将38KHz 载波红外信号发射距离提高到10 米;在红外接收方面,进行了红外干扰测试;在触屏校验方面,通过实验获取触屏数据,利用matlab 参数估计lsqcurvefit 函数求得校正参数,解决了触屏漂移问题;在彩屏显示方面,将遥控器所有按键简化为方向键和确认键,虚拟数码管显示按键位置,避免了单片机片上资源紧张的问题,此外,彩屏仅支持16 位R5G6B5 格式数据,一张176*220 图片占用72. 6KB 空间,造成极大浪费,本文借此讨论了适合本系统的图片压缩技术,给出了一种具体的图片压缩格式。
按照由简单到复杂的顺序,本文先后制作了遥控接收解码装置、遥控编码发射装置、万能学****型红外遥控器,以SAA3010 遥控器作为典型代表(遵循飞利浦RC-5编码协议),成功的实现了红外编解码、发射接收、按键触屏双输入、彩屏显示等基本功能,最终制作的万能学****型遥控器在功能上可以完全代替SAA3010 遥控器。
关键词:红外学****红外解码;单片机控制;声卡采样;触屏校验
Abstract
In the electronic world, the infrared remote control technology is widely used in our lives. Various appliances on the market have the technology of infrared remote control system with maturity and low cost. However, to avoid different brands and between different types of equipment malfunction, people use different devices in different transport rules or identification number, which makes various types of remote control apply only to their remote objects and easy causes confusing results that the actual use of the remote control are many plex. The design requirements is to achieve an intelligent learning IR remote control implementations.
By studying infrared codec, infrared transmitting and receiving, MCU control, LCD display technology, remote control of other learning and learning sent essfully restored infrared remote control and core part of the design is that through software decoding it can achieve the self-study function of the infrared signal and be controlled by MCU to make the learned signal in store and forward.
Keywords: Infrared remote controller;The 38KHZ carrier;Self-study;Infrared remote receiver;Infrared remote transmitter
目录
1. 绪论 1
选题的目的意义 2
红外学****研究现状 3
选题研究的内容 3
2 智能红外遥控学****方案设计 4
总体方案介绍 4
方案论证 5
学****方式 5
按键模块