自動干手器電子線路設計

電氣工程論文編號:DQ139   論文字數:12112,頁數:28

目 錄
摘要……………………………………………………………………………..……………...I
Abstract……………………………………………………………………………..………...Ⅱ
1  緒論………………………………………………………………………………………..1
   1.1  前言……………………………………………………………………………..…..1
 1.2  干手器的分類。…………………………………………………………………....1
 1.3  設計的整體框架…………………………………………………………………....2
 1.4  設計要求………………………………………………………………………..…..2
2  電源電路設計……………………………………………………………………..…….3
2.1  電源電路設計框圖……………………………………………………………….... 2
2.2  電源電路的組成部分及功能…………………………………………..…………...3
 2.2.1  電源變壓…………………………………………………………………......3
 2.2.2  整流電路…………………………………………………………………......3
 2.2.3  濾波電路……………………………………………………………………..4
 2.2.4  穩壓電路…………………………………………………..………..……......5
3  555定時電路在設計中的應用………………….…….....…………………………..6
 3.1　555定時器的工作原理…………………………………………………………….6
 3.2  555定時器的典型應用……………………………………………………………..7
 3.2.1  單穩態觸發器……………………………………………………………......8
 3.2.2  多諧振蕩器………………………………………………………………......9
 3.2.3  占空比可調多諧振蕩器……………………………………………………..10
 3.2.4  施密特觸發器……………………………………………………………......10
 3.3  干手器定時開關電路設計………………………………………………………….11
4  紅外線自動控制電路設計……………………………………………………………13
 4.1  紅外線簡介………………………………………………………………………….13
 4.1.1  紅外輻射及近紅外光波譜………………………………………………......13
 4.1.2  近紅外光作為紅外探測、遙控的光源的理由……………………………..13
 4.2  紅外線自動控制的方式…………………………………………………………….15
  4.2.1  自動控制定義……………………………………………………………......15
  4.2.2  紅外線光電開關……………………………………………………………..15
 4.3  紅外線自動控制的應用…………………………………………………………….16
 4.4  紅外線自動控制電路的設計……………………………………………………….17
 4.4.1紅外線發射電路設計………………………………………………………….17
 4.4.2紅外線接受及信號處理電路設計…………………………………………….19
5  自動干手器電子線路設計………………………………………………….…………20
 5.1  熱風電路的設計…………………………………………………………………….20
 5.2  自動干手器電子線路圖設計……………………………………………………….21
6  總結………………………………………………………………………………………...22
致謝…………………………………………………………………………………………......23
參考文獻……………………………………………………………………………………….24

摘  要

 在當今社會，隨著電子技術的發展和時代的進步，人們越來越注重生活上的衛生狀況。節能環保型的自動干手器是一種高檔衛生潔具。廣泛應用于賓館酒店、公廁等等公共場所的洗手間。
 干手器的工作原理是采用一種紅外線感應的電路開關，當有人手伸過來時，紅外線開關將電熱吹風機自動打開，人離開時又自動將吹風機關閉。干手器自動感應基本電路是由電源電路、555定時開關電路、紅外發射和接收電路、信號處理電路及風機電路等組成。
 在設計的過程中我對555定時電路的應用有了詳細的了解，學到了課堂上無法學到的東西。通過實踐我還對自己所學的各個方面的知識進行了總結，提高了自我學習能力和獲取新知識的能力。通過對線路的設計節使我提高了發現問題、解決問題的能力，并且對問題的觀察比以前更加敏銳了，考慮問題也更加全面了。
關鍵詞：干手器；555定時開關；紅外線

Abstract
    In modern society, along with electronic technology's development and the time progress, now society's people more and more pay great attention in the life the hygiene condition. The energy conservation environmental protection automatic hand-dryer are one kind of upscale hygienic sanitary equipment, widely applies in the guesthouse hotel, the public toilet and so on public place washroom.
 Operation principle of hand-dryer is using an induction infrared circuit switch. When the hand is offered, infrared switch will open the electric dryer automatically. When people leave, the dryer will close automatically. The basic circuit of hand dryer’s auto-induction make up of power supply circuit, 555 timer switch circuit, infrared transmitting and receiving circuit, signal processing circuits and fan circuit.
 In the process of designing 555 timer circuit I have a detailed understanding of the classroom can not be learned learned. Through practice I also learned of their knowledge of all aspects of a summary, improved self-learning ability and the ability to obtain new knowledge. Through the
design, I found to improve the problem, problem-solving skills, and observation of the problem more acute than before, and to consider the issue more comprehensive.
Keywords：hand-dryer; 555 time cut-outs; infrared