紅外線遙控直流穩(wěn)壓電源的方案

摘  要
紅外線遙控是目前使用最廣泛的一種通信和遙控手段。由于紅外遙控裝置具有體積小、功耗低、功能強、成本低等特點，因而許多電器裝置上也紛紛采用紅外線遙控。
電源作為電子產(chǎn)品的能量供應部分，在電路中起著舉足輕重的作用，好的電源能夠使電路的作用發(fā)揮得更出色。
設計中介紹了一種利用紅外線在傳輸上的優(yōu)點來設計紅外線遙控直流穩(wěn)壓電源的方案。系統(tǒng)總體上由兩部分構成，即紅外線遙控部分和電源部分。遙控部分實現(xiàn)的是對輸出電壓等級的控制，這是主體。而不同輸出電壓可以滿足不同用電裝置的工作需求。文章著重對遙控部分和電源部分的原理做了具體的分析，并對總體實現(xiàn)方案作了詳細的介紹和說明。
在設計中利用紅外線遙控集成電路BA5104作為紅外發(fā)射部分，BA5204作為紅外接收譯碼專用集成電路。此集成電路的特點是外圍元件少、工作穩(wěn)定可靠、不需調試、通用性好。這就很好地實現(xiàn)了電源穩(wěn)定性、可靠性、精確性、高效率、小型化和輕量化的要求。

關鍵字：紅外遙控，紅外發(fā)射，紅外接收，電源

Abstract
Infrared ray remote control is one kind of most popular communication and remote control means at present. Because the infrared remote control device has small, low power dissipation , strong function, low grade cost characteristics, therefore a lot of electric apparatus devices adopt infrared ray remote control one after another.
The power supplies some as the energy of the electronic product, and play a decisive role in holding the balance in the circuit, the good power can make the function of the circuit play well.
The text has introduced a kind of scheme of utilizing the infrared ray to design the remote control direct current steady voltage plug of infrared ray in the advantage on of transmitting. The system is formed by two parts generally, namely infrared ray remote control part and power part. What the remote control part realized is to the control which outputs the grade of voltage, this is a subject of the text. And different output voltage can meet different power consuming working demand of device. The text has focused on and made concrete analysis to the principle of the remote control part, and has done detailed introduction and explanation. to the realizing scheme.
Utilize remote control integrated circuit BA5104 of infrared ray as some of infrared emission in this design, and BA5204 is accepted as the special-purpose integrated circuit of receptor and decoder. Integrated circuit has the characteristic that it needs few peripheral components, works steady and reliably , does not need debugging ,and  has  kind commonality . This has well realized the stability of the power , demand for dependability , accuracy , miniaturized and light quantization with high efficiency.

Keywords：Infrared remote control，Infrared emission，Infrared receptor，      Power

目   錄
摘  要 I
ABSTRACT II
1 緒言 1
1.1 課題背景 1
1.2 電源技術的發(fā)展 1
1.3 課題研究的目的和意義 2
2 系統(tǒng)設計方案的研究 4
2.1 系統(tǒng)的實現(xiàn)原理 4
2.2 各種遙控系統(tǒng)的比較 4
3 紅外遙控的基礎知識 6
4 紅外遙控系統(tǒng) 7
4.1 單通道遙控開關電路 7
4.2 單通道步進式遙控電路 7
4.3 多通道紅外遙控電路 8
4.4 紅外遙控信號發(fā)射器及編碼 10
4.5 紅外遙控信號接收器及其解碼 11
4.5.1  硬件解碼電路 12
4.5.2  軟件解碼方案 13
4.5.3  未知信號格式遙控器信號碼的識別 14
5  電源電路 16
5.1電路組成 16
5.1.1  電路組成及各部分電路的作用 16
5.1.2  變壓器降壓電路 17
5.1.3  降壓電路分析說明 18
5.2 整流電路分析 18
5.2.1  整流電路的種類 18
5.2.2  單相半波整流電路 19
5.2.3  單相全波整流電路 20
5.2.4  單相橋式整流電路 20
5.2.5  單相半波、全波、橋式整流電路各自的特點 21
5.3 電源濾波電路 22
5.3.1 電路種類 22
5.3.2  電容濾波原理 22
5.3.3  Л型RC濾波電路 23
5.3.4  Л型LC濾波電路 24
5.3.5  電子濾波器電路 24
5.4 穩(wěn)壓電路 25
5.4.1  穩(wěn)壓電路的種類 25
5.4.2  穩(wěn)壓電路分析說明 26
6  總體電路部分 27
6.1 整體電路的設計 27
6.2 通用紅外線遙控電路 28
7  總結與展望 31
致謝 32
參考文獻 33