編碼發射與接收報警系統設計：看護機

電子機電論文編號:JD333 此份論文附開題報告,任務書,論文,文獻綜述,字數:11367,頁數:22   

目錄
摘要
第1章 概述
1．1 看護機的發展背景 ......................................................5
1．2 看護機的發展趨勢 .......................................................5
第2章  看護機的總體設計方案
2．1看護機的工作過程    ....................................................6
2．2 看護機的設計方案   ....................................................6
2．3看護機應用到的技術
2．3．1 編碼譯碼技術    ....................................................7
2．3．2調制解調技術    .....................................................7
2．3．3發射接收技術    ......................................................8
看護機各單元電路設計
3．1 編碼發射系統
3.1.1按鍵編址電路 ..........................................................11
3.1.2 編碼電路      .......................................................11
3.1.3 發射電路    ..........................................................13
3．2 接收報警系統
3.2.1 接收電路    ..........................................................15
3.2.2  解碼電路    .........................................................16
3.2.3  報警電路    .........................................................18
3．3  總結        ..........................................................19
結束語  ....................................................................20
謝辭    ....................................................................21
參考文獻  ..................................................................22

摘   要

編碼發射與接收報警系統是一種典型的防盜報警系統，其總體的設計思路是由編碼發射電路和接收解碼報警電路兩部分組成。編碼發射電路是通過發射機發射信號，并經過數字編碼，發射等環節，將物體移動的信號轉化成電信號利用無線電信號發射出去，從而把物體移動的距離控制在一定的范圍之內。而接收報警電路則是通過對電信號解調、譯碼和聲光報警等環節，將電信號轉為聲音、光源信號，從而達到無線報警的目的。     在本次設計過程以電路原理為主，因此在電路元件和模塊的選擇上盡量采用通用、基礎的元器件，避免采用大規模的集成電路來設計電路。
經過分析，本系統采用通用的PT2262/PT2272組成的編碼和解碼電路，無線發射和接收采用比較實用的TX315A型無線發射∕接收模塊，而聲光報警系統則是應用簡單的發光二極管和蜂鳴器組成。

關 鍵 詞：編碼，發射，接收，解碼，報警

ABSTRACT

The code launch and the receiving system are one kind of typical  security alarm system, its overall design mentality is composed by the code transmission circuit and the receive decoding alarm circuit two parts. The code transmission circuit is through the transmitter transmitting message, and after the digital coding, link and so on, transforms the object migration signal into the electrical signal to use the radio signal to launch, thus the object migration distance control in certain scope. And receives the alarm circuit is through to the electrical signal demodulation, the decoding and the acousto-optics reports to the police and so on, transfers the electrical signal into the sound and the photosource  signal, thus achieved wireless reports to the police goal.
In this design process by circuitry primarily, therefore uses general,the foundation primary device as far as possible in the circuitelement and in the module choice, avoids using the large-scaleintegrated circuit to design the electric circuit.
After the analysis, this system uses the general PT2262/PT2272 composition the code and the decoding electric circuit, the wireless launch and the receive uses the quite practical TX315A wireless launch/ receive module, and the acousto-optics alarm system is applies the  simple  light emitter diode and the ringing composition.

Key Words: The code, the launch, the receive, the decoding, the alarm