红外遥控电路.docx

红外遥控电路.docx中原工学院
电气自动化毕业设计
题 目：
专 业: 机电一体化
班 级:
姓 名:
指导老师：
中原工学院机电一体化
二0 年 月
摘要
随着科学技术的发展，人们的生活水平不断提高，节能环保的意识也逐渐 加强。研究人员不断研究开发新型产品应用于生活使我们的生活质量提高的同时 更能节省资源。红外遥控技术就是应运而生了。红外遥控技术已经在日常家用电 器中得到了广泛应用，其使用方便、功耗低、抗干扰能力强的优点也越来越在智 能仪器系统中受到重视。市场上的各种家电红外遥控系统技术成熟，成本低廉， 为人们的家居生活带来方便快捷的服务。
本文主要介绍了利用变压器、整流二极管、电容和三端稳压器作为电源电路， 采用新型红外发射芯片BL9148和接收芯片NB9149作为发射及接收电路，通过 编码译码，输出信号，传输给控制电路来控制电路负载。
关键词 红外线遥控 编码译码电路 控制电路
Infrared remote control circuit
Abstract： With the developme nt of scie nee and tech no logy, people's liv ing standard continuously improving and the awareness of energy saving and en vir onmen tal protectio n is gradually stre ngthe ning. Researchers continue to research and development of new products used in life so that we improve the quality of life-savi ng resources at the same time. In frared remote con trol tech no logy is born of. In frared remote con trol tech no logy has bee n in day-to-day household applia nces has been widely used, and its easy-to-use, low power consumption, anti-interference ability of the advantages of increasing intelligence apparatus in the system be taken seriously. All kinds of household electrical applia nces market in frared remote con trol system tech no logy is mature, low-cost homes for people's lives more convenient and efficie nt service.
This paper describes the use of tran sformer, rectifier diodes, capacitors and three-termi nal voltage regulator as a power circuit, using a new type of in frared transmitter and receiver chips BL9148 as a launch and receive NB9149 circuit, through the codec, the output signal, and transmit them to the control circuit to control the load circuit.
Code decod ing circuit
Key words： In fra-red remote con trol
Con trol circuit
目录
前言 1..
设计目的 1..
设计的任务及要求 1.
第1章红外遥控系统的组成及工作原理 2
2.
2
第2章电源电路 5.
5.
5.
.6..
10
11
第3章编码译码电路 12
12
BL9148芯片的应用 12
二级放大电路的功能 14

一体化接收头 14
N