目錄前言1第一章系統(tǒng)方案設(shè)計211系統(tǒng)設(shè)計要求212系統(tǒng)方案設(shè)計213方案比較及論證3第二章各單元模塊電路設(shè)計421振鈴檢測模塊422雙音多頻信號收發(fā)功能模塊523模擬摘機、掛機電路924語音控制電路1025系統(tǒng)上線離線/復(fù)位電路1326溫度檢測以及AD轉(zhuǎn)換模塊1427液晶顯示模塊1728單片機控制模塊2029電源模塊22第三章軟件設(shè)計2431軟件設(shè)計結(jié)構(gòu)2432程序流程框圖2533DTMF信號解碼程序框圖2634DTMF信號發(fā)送程序框圖28第四章系統(tǒng)調(diào)試2941振鈴檢測2942模擬摘機電路3043DTMF雙音多頻檢測3044DTMF信號發(fā)送3145語音電路3246液晶顯示3347溫度采集3448系統(tǒng)聯(lián)調(diào)35第五章設(shè)計總結(jié)35第六章致謝36第七章參考文獻37附錄系統(tǒng)程序及總框圖38系統(tǒng)總圖551前言隨著科學(xué)技術(shù)的飛速發(fā)展，各種高技術(shù)不斷涌入我們的生活、工作，也改變著我們的認識。融入一定智G5947的各G12879智能技術(shù)，G8503G3324G5720G5720G17220G17829我們，G5194G4570G1262G6116G1038G991一G1022發(fā)展的G9921G9538。隨著G10628G1207G4490G5249G4490G11004電G3132設(shè)G3803的G3698多G2656G17902G16771線路的發(fā)展，G2045G11004G10628G7389的G17902G16771設(shè)G3803G2656線路G4557G4490G11004電G3132G2656G1214G15932G17839G15904G17840程控制，G5062G13475G6116G1038G7422G7481的發(fā)展G17247G2195。G10628G1207電G16817G13605G13488G7171G11013G1144換機G2656電G16817G1268G17767線G1861G2528G13464G6116，G4439的G5627能G5062G13475G10628G1207電G16817G13605G13488G7171G11013G1144換機G2656電G16817G1268G17767線G1861G2528G13464G6116，G4439的G5627能G5062G13475G7389G1114G5468G3835的G17839展，G13792G1000G2499G19764G5627G19762G5132高。G17977控技術(shù)G7171G17902G17819一定的G6175G8585G4557G15999控G10301G1319G4466G7057一定G17329離的控制，G5132G11004的方G5347G7389G7092線電G17977控、G7389線G17977控、G13430G3818線G2656G17241G3780G8886G17977控G12573。G7092線電G17977控G7094G7171G2045G11004G7092線電信號G4557G15999控G10301G1319G4466G7057G17840G17329離控制。G7092線電G17977控不G2499G18003G1825的G20047G2356G11004一定的G7092線電頻G10587G17176源，G17908G6116電G11925G8757G7591G727G5132G16280的G7389線G17977控G19668G17839G15904G999G19388的G5079線，G3698G2164G1114G6249入G727G13792G13430G3818線、G17241G3780G8886G17977控G2029G2475G17329離G6164G19492。G10628G7389的G17977控方G5347G1025，G17836G7389G17745G8886G17902信控制G6175G8585G2656G3534G1122G7092線G4559G2640的G17977控方G5347。G17745G8886方G5347G2375G17902G17819電G2159線G1268G17894信G5699，G16825方G5347G2494能G4628G19492G1122G2528一變電G6164、G2528一變G2399G3132G6164G17770G14551G3272G1881。G3252G8504也G4396G3324G17329離G19394題，應(yīng)G11004G14551G3272G7389G19492。G3534G1122G7092線G4559G2640的G17977控方G5347G2045G11004G1114G10628G7389的G4559G2640頻G10587G17176源，不G19668G2356G11004額G3818的頻譜。G13792G1000，隨著G4559G2640G13605的全國聯(lián)G13605，其G17977控的G17329離G3534本不G2475G19492制。但G16825方G5347的G2475控方動作滯后G1122控制方的操作，不具G3803G4466時G5627，G13792G1000不具G3803G5468高的G2499G19764G5627。電G16817G17977控作G1038一較新的課題與G5132G16280的G17977控方G5347相比，顯示出一定的優(yōu)越G5627，不G19668G17839G15904G999G19388的G5079線，不G2356G11004G7092線電頻G10587G17176源，G18003G1825G1114電G11925G8757G7591。G2528時，G11013G1122電G16817線路各地聯(lián)G13605，G2499以充分G2045G11004G10628G7389的電G16817G13605，G3252G8504G17977控G17329離G2499跨省市，甚至跨越國G4490。電G16817屬雙工G17902信G6175G8585。G3252G8504，這G2499以G3835G3835G1319G10628出G2045G11004電G16817G17839G15904G17977控的更G3835優(yōu)越G5627。操作者G2499以G17902G17819各種提示音G2375時G1114解G2475控G4557象的G7389關(guān)信G5699，從G13792G17839G15904G17839一步的操作2第一章系統(tǒng)方案設(shè)計11系統(tǒng)設(shè)計要求1G16825系統(tǒng)G2499G17902G17819G17840程電G16817或G6175機G7481G17839G15904G17977控操作2具G7389密碼功能3具G7389語音提示功能4自動報警功能5具G7389監(jiān)聽功能6本系統(tǒng)不影響電G16817機的G8503G5132功能12系統(tǒng)方案設(shè)計電G16817G17840程控制G4490G11004電G3132系統(tǒng)主要完G6116的功能G7171G4557電G16817雙音多頻信號G17839G15904解碼，G5194自動驅(qū)動G15999控電G3132設(shè)G3803G17839G15904指定操作，G2528時G11004戶G2499G4557G15999控設(shè)G3803的工作狀態(tài)G17839G15904查詢，室溫的檢測，G11004戶G2499G17902G17819電G16817查詢溫度值，以及當(dāng)G7389緊急情況發(fā)生時G17902G17819撥預(yù)置的電G16817號碼G17839G15904G17840程預(yù)警。G11013G1122本系統(tǒng)G7171G2045G11004電G16817G17839G15904G17840程控制，G6164以系統(tǒng)必G20047能識別電G16817線上的振鈴信號，從G13792G4466G10628自動摘機。G2528時，本系統(tǒng)一般G3324G7092人值守的情況G991工作，G6164以必G20047能自動摘機、掛機，G1000G3324G11004戶操作完畢忘記掛機時，必G20047能自動復(fù)位及關(guān)機，G1038G1114安全起見G17836G7389必要G3698G2164密碼校驗的功能G727要G17839G15904工作查詢就必G20047G7389語音的提示G2656反饋，這樣的系統(tǒng)才G3534本上合乎要求G3534G1122以上要求。方案一G11013兩片單片機G13464G6116控制系統(tǒng)，一片G11004G1122信號檢測、一片G11004G1122系統(tǒng)控制，兩片單片機之間G11004串G15904G17902G16771連接，A1A0A2A3DTMFA5A4A7A8A9A10A11A12A13單片機單片機A7A6A2A3A15A16ADA17A18A19A20A21A14A2A3A23A24A12A13A7A8A22A25A26A27圖1方案1系統(tǒng)原理圖3主要G3132件選G11004單片機選G11004AT89S82，DTMF收發(fā)芯片選G11004MT8880，語音芯片選G11004ISD2560，溫度檢測選G11004AD590，A/D轉(zhuǎn)換芯片選G11004ADC0809。方案2系統(tǒng)框圖如圖12主要G3132件選G11004A29A28A14A30A31A33A32A34A35A36A37A38A40A41A39A42A44A43A28A45A34A38A37A37A40A47A32A46A48A5A4A49A28A30A31A46A32A34A34A34A50A40A1A0A49A28A30A31A41A36A47A38A37A51A50A40A10A11A52A53A6A31A33A47A37A35A50A40A33A39A47A17A18A49A28A30A31A33A47A54A50A34A50A35A5613方案比較及論證1G3324功能上，兩種方案相差不G3835，方案2采G11004新型單片機AT89S82,G2499以G4466G10628程序的G3324線G991G17745，這樣就不G19668要G999G11004的燒寫G3132G1114，G2528時也省去G1114反復(fù)取、插單片機的麻煩。G8504G3818單片機G17836G1881置看G19388狗電路，G2494G19668G4557程序G1025某些控制字G17839G15904設(shè)置看G19388狗就能G8503G5132工作G1114，這樣就使得系統(tǒng)運G15904更G2164G2499G19764G1114。2方案2的電G3132控制電路G2656液晶顯示G7171G17902G17819擴展一片8255G7481G4466G10628的，這比方案1另G2164一塊單片機要方便的多。G3252G1038兩G1022單片機之間要不斷的G17902信，這樣不僅降低G1114系統(tǒng)的速度，也降低G1114G6984G1022系統(tǒng)的G2499G19764G5627。3方案2采G11004G1114音頻G13818合變G2399G3132上線，使系統(tǒng)G2656電G16817G13605G8821G7389電G8680的關(guān)系，這樣系統(tǒng)就不G7143G2475G3818G11040的G5190G6212，從G13792更G2164安全G2499G19764。G17902G17819比較以上G1972G1022方G19766的優(yōu)G13582G9869，我們采G11004方案2。A19A20A21A14A2單片機A7A6A2A3A10A11A12A13A55A57A58A59A60A61DTMFA5A4A1A0A2A3A7A8A9ADA17A15A16A23A24A12A13A44A43I/OA62A63A64A6A65A66A67A68圖2方案2系統(tǒng)原理框圖4第二章各單元模塊電路設(shè)計21振鈴檢測模塊G3324電G16817線路G8821G7389G7481鈴時線路上G11013G1144換機提G1391G3835G1343450G57的G11464流電G2399。當(dāng)G11004戶G15999G2640G2495時，電G16817G1144換機發(fā)出鈴流信號，振鈴G103850G1023G1251的G8503G5370G8886，G16868鈴G3845G11507不G3835G112210G8，電G2399G7389G6940值90G10215G57。振鈴以5G12198G1038G2620G7411，G23751G12198送，4G12198斷。G7693G6466系統(tǒng)設(shè)計G19668要TTG47電頻，G6937G4570振鈴信號送入G7737G3546振流，G1889G11004G12295G2399G1120G7509G12661G17839G15904G12295G2399，G5194G11004G53CG9400G8886，G9994后G17767入G1821電G13818合G3132。G13475G17819G1821G13818的G19560離轉(zhuǎn)換，G17767出G7171G7643G1946的5G57方G8886信號，送入單片機T0G12483G2487，G11013程序G4557振鈴信號計G6980。G3324本電路檢測鈴流信號時，以G1128G8437鈴響G1038G1946，G2375G1128G8437振鈴后G7092人摘機，便G11013單片機控制自動模擬摘機。電路圖如圖2112J3CON2C21UFC11UFR110KD215VC310UFR210KR510KT0VCC14AC2AC3B1QDU1OPTOISO1D1LEDA69A70A71A72A23A24A12A13A735參數(shù)計算、器件選擇電G16817振鈴信號G17902G17819電G4493C1、C2G19560離G11464流，G17902G17819G7737G3546振流、G1120G7509G12661G12295G2399、G53CG9400G8886G17767入G1821G13818。當(dāng)G7389G1144流信號時信號G17902G17819振流、G12295G2399、G9400G8886使G1821G13818G4560G17902，G2528時G1821G13818G17767出5G57方G8886G2052單片機。G1821電G13818合G31324G4925以G1821電轉(zhuǎn)換原理G1268G17767信G5699，G4439不僅使其一、G1120G8437G1403完全G19560離G9052G19512G5190G6212，G1000能G6245制電G11925G5190G6212。電G4493C1、C2G1038G19560G11464電G4493，但G1144流信號較高，G6937選G110041G56F/100G57的電G4493G727G12295G2399G1120G7509G12661G103816G57G12295G2399G1120G7509G12661G727G531、G532G10381G46的電G19471、C3G103810G56F/22G57電G4493G727G17902G17819示G8886G3132G16278G4531G1821G13818G17767出G8886G5430G5468G3921的方G8886，G1000單片機能識別。22雙音多頻信號收發(fā)功能模塊G8504G18108分G7171G6984G1022系統(tǒng)的關(guān)G19202，G4439的工作情況G11464接G1927定G1114系統(tǒng)的G2499G19764G5627。DTMFG11DG88G68G79TG82G81G72MG88G79G87G76FG85G72G84G88G72G81G70G92G12雙音多頻信號解碼電路G7171G11458G2081G3324G6365G19202電G16817G11G3278定電G16817、G12239動電G16817G12、程控G1144換機及G7092線G17902信設(shè)G3803G1025G5203G8879應(yīng)G11004的集G6116電路。G4439G2265G6336DTMF發(fā)送G3132與DTMF接G2475G3132,G2081者主要應(yīng)G11004G1122G6365G19202電G16817作雙音頻信號發(fā)送G3132,發(fā)送一G13464雙音多頻信號,從G13792G4466G10628音頻撥號。雙音多頻信號G7171一G13464G11013高頻信號與低頻信號G2484G2164G13792G6116的G13464合信號。221MT8880芯片功能介紹當(dāng)G11004戶G3324電G16817機的G19202G11436上G17767入密碼或G6365G991控制G6365G19074后，這些信G5699G3355采G11004雙音多頻方G5347G17902G17819電G16817線發(fā)出。DTMF雙音多頻解碼電路G7171系統(tǒng)的關(guān)G19202G18108分，其主要功能G7171從電G16817G13605上提取信G5699，G5194G4570系統(tǒng)撥號信G5699送上電G16817G13605，G17839G13792G4466G10628控制功能。使G11004電G16817G999G11004的雙音多頻解碼芯片G17839G15904G17767入、G17767出雙音頻信號的解碼，G7171比較G5132G11004的方G8873。使G11004集G6116電路不但G3818G3272電路G12628單，G13792G1000G2499G19764G5627高，信號G13475G17819轉(zhuǎn)換變G1038G1120G17839制碼便G1122單片機G16847取。G5132G11004電G16817雙音多頻解碼G3132G73898870、8880、8888G12573，MT8880G7171具G7389檢測G17902G16817G9400G8886G3132的單片DTMF調(diào)制解調(diào)G3132，應(yīng)G11004G1114CMG50S技術(shù)使其具G7389低功G13803G2656高G2499G19764G5627。G1881G18108計G6980G3132提G1391G10481發(fā)模G5347，這種單音G10481發(fā)G2499G11004G12946G11842定時發(fā)送。G2499選G6333G2640G2495G17819程G9400G8886G3132，以便G5506G3800理機分G7524G2640G2495G17819程G1025的單音。提G1391G7643G1946G5506機接G2487G26566800系G2027G1872G4493，G5194G1813G16780G5506機選G3348一G1022狀態(tài)G4504G4396G3132、兩G1022控制G4504G4396G3132G2656兩G1022G6980G6466G4504G4396G3132。結(jié)合本G8437設(shè)計要求我們選G11004MT8880完G6116G8437功能。6MT8880簡介MT8880G7171MITG40IG1856G2508生G1147的DTMF發(fā)送與接收G3132，G4439G7171一種功能較G5390的DTMF發(fā)送與接收G3132G4439的G1881G18108G4504G4396G3132G2656控制接G2487、G6980G6466總線G3132，便G1122G4466G10628與G5506G3800理G3132的G11464接接G2487G2656G4557電路G17839G15904工作模G5347控制G14731得更多的功能G2656G9801活G5627G17902G17819G5506機接G2487G2499以G11013CG51，G53SG50，G53/G58，CS，D0D3G12573信號選G6333與G1881G18108G4504G4396G3132G5194控制電路的工作狀態(tài)或工作模G5347。G50SC1，G50SC0時G19059或振G14645G3132G17767入G2656G17767出G12483G17902G5132兩G12483G3818接358MG43G93晶G1319，IG49，IG49運放的G2528相G2656反相G17767入。GSG3698益選G6333G12483。G57G53G40FG3534G1946電G2399G17767出G12483，G4439G11013G57DDG57SSG1147生，G17902G5132G1038G57DD/2,作G1038運放G17767入偏置。TG50G49G40發(fā)送TG50G49G40信號的G17767出。G53/G58G16847、寫控制信號G17767入，與TTG47G1872G4493。CS片選信號G17767入若G1038TTG47低電平，G2029G8504電路G15999選。G53SG50G4504G4396G3132選G6333G17767入，與TTG47電平G1872G4493。CF系統(tǒng)時G19059G17767入。D0D3控制DTMF信號發(fā)送G2656DTMF譯碼的4位G6980G6466G17767入/G17767出，與TTG47G1872G4493。IG53Q/CG51G4557G5506G3800理G3132的G1025斷請求信號。若控制G4504G4396G3132G6980G6466設(shè)定電路G3800G1122G2640G2495G3800理G11CAG47G47G12模G5347G2656G1025斷使能，G2029IG53Q/CG51G12483G17767出G1207G15932運放G17767入的方G8886信號音，G16825位信號頻G10587必G20047落G3324G2640G2495G3800理G9400G8886G3132帶寬G1881。G40ST初始控制G17767出G727若檢測出G7389G6940的單音G4557時，G8503STG1038高電平G727若信號丟G3845，G2029G40ST返G1038低電平。ST/GT控制G17767入/G17767出時間監(jiān)測G17767出若CI電G2399高G1122G19388G19492G57G85SG72G87時，電路G4504G4396G15999檢測的DTMF單音G4557，G5194更新G17767出鎖G4396G3132G1881G4493G727若電G2399低G1122G57G85G72SG87，G2029電路不接收一新單音G4557、GTG17767出的作G11004G7171設(shè)置G3818G18108監(jiān)測時間G5132G6980。7222雙音多頻信號解碼電G16817G17840程控制系統(tǒng)采G11004MITG40G47G1856G2508生G1147的MT8880DTMF接收G3132作G1038DTMF信號的解碼核心G3132件。DTMF信號G13475G11013IG49G2656IG49G17767入，G13475G17819運算放G3835G5194G1000G9400G19512信號G1025的撥號音頻G10587，G9994后發(fā)送G2052雙音G9400G8886G3132，分離出低頻G13464G2656高頻G13464信號。G17902G17819G6980字計G6980的方G5347檢出DTMF信號的頻G10587，G5194G1000G17902G17819譯碼G3132譯G6116四位G1120G17839制碼。四位G1120G17839制編碼G15999鎖G4396G3324接收G6980G6466G4504G4396G3132G1025，G8504時狀態(tài)G4504G4396G3132G1025的延時控制識別位復(fù)位，狀態(tài)G4504G4396G3132G1025的接收G6980G6466G4504G4396G3132滿G7643識位置位，G4557G3818G7481說，當(dāng)G4504G4396G3132G1025的延時控制識別位復(fù)位時（G53Q/CI）G11013高電平變G1038低電平。如果G11004IG53QI/CG51作G1038單片機的G1025斷信號，1G53QG47G11013高電平變G1038低電平，向CG51G56發(fā)出G1025斷申請，當(dāng)G1025斷響應(yīng)，G16847出G4504G4396G3132G1025的G6980G6466后，IG53QG47返回高電平。電G16817G6365G19202以相應(yīng)的雙音多頻信號及相應(yīng)譯碼G17767出G19202G11436012345譯碼101000010010001101000101G19202G114366789譯碼011001111000100110111100G1593221譯碼G159328223雙音多頻信號發(fā)送當(dāng)MT8880作G1038DTMG51發(fā)送G3132時，G6980G6466總線D0D3上四位G1120G17839制碼G15999鎖G4396G3324發(fā)送G6980G6466G4504G4396G3132G1025，發(fā)送的DTMF信號頻G10587G11013358MG43G93的晶振分頻G1147生。分頻G3132首先從G3534礎(chǔ)頻G10587分離出8G1022不G2528頻G10587的G8503G5370G8886G15904G2027計G6980G3132G7693G6466發(fā)送G6980G6466G4504G4396G3132G1025的G6980G6466，以八取G1120方G5347分離出一G1022高頻信號G2656一G1022低頻信號，G13475開關(guān)電G4493作D/A轉(zhuǎn)換，G3324G2164G8873G3132G1025合G6116DTMF信號，G5194從TG50G49G40G12483G17767出。1信號音判斷的實現(xiàn)信號音判斷的原理G7171G11013G1122電G16817系統(tǒng)信號音的撥號音、回鈴音G2656忙音的頻G10587G3355G1038425475G43G93的G8503G5370G8886，G2494G7171斷續(xù)比不G2528G1000G3324時間上G7389明顯的差異G11撥號音連續(xù)信號忙音G1038035SG17902，035S斷，回鈴G3780G10381SG17902，4S斷G12。要判斷信號音，首先應(yīng)G4570G3800理DTMF信號的MT8880芯片設(shè)置G1038G2640G2495G3800理模G5347，當(dāng)選G6333G2640G2495G3800理模G5347時，MT8880就不能G11004G1122檢測DTMF信號G1114。MT8880的G2640G2495G3800理G9400G8886G3132G7171一G1022帶G17902G9400G8886G3132，G17902頻帶G1038300510G43G93，當(dāng)信號G17767入G12483G7389信號音G17767入時，如果MT8880工作G3324CG51模G5347，G3324IG53Q腳就G17767出一高電平。使電G16817G2640G2495G17819程G1025的各種信號音G13475MT8880G9400G8886，G19492幅后得G2052方G8886，G5194G11013MT8880的IG53QG17767出。G9994后G4557MT8880G17767出的IG53Q信號計G69805S，撥號音的計G6980上G19492G1038G1145025G1252375，撥號音的計G6980G991G19492G1038G1145025G1252175。G2528理，忙音的計G6980G14551G3272G103810411212，回鈴音的計G6980G14551G3272G1038425475，G7092信號的計G6980應(yīng)G10380。2MT8880與單片機接口MT8880采G11004G1114G7643G1946的G5506G3800理G3132接G2487，這樣使得信號的接收G2656發(fā)送變得G12628單。MT8880G1881G18108G73895G1022G4504G4396G3132，這5G1022G4504G4396G3132G2499分G1038G6980G6466暫G4396G4504G4396G3132、收發(fā)控制G4504G4396G3132G2656收發(fā)G3132狀態(tài)G4504G4396G3132。G6980G6466暫G4396G4504G4396G3132G7389接收G6980G6466G4504G4396G3132G2656發(fā)送G6980G6466G4504G4396G3132接收G6980G6466G4504G4396G3132G11004G1122G4396放最后一G8437接收G2052的G7389G6940值G7171一G1022G2494G16847G4504G4396G3132G727發(fā)送G6980G6466G4504G4396G3132G1025的G6980G6466G1927定要發(fā)送的雙音頻信號的頻G10587G13464G6116，我們G2494能向發(fā)送G6980G6466G4504G4396G3132G1025寫人G6980G6466。G3324程序的開始G2656G2164電、系統(tǒng)復(fù)位時、G3324軟件上要G4557控制G4504G4396G3132G17839G15904初始化。3硬件接口電路G5120G5123分別接人MT8880的D0D3單片機的G5124G5127分別接MT8880的G46S0、CS、G53/G58、CG46。MT8880每接收一G1022G3818G18108信號IG53QG47G11013高變低一G8437，單片機G3324G1025斷G7411間G4570G6980G6466D0D3從MT8880G16847入G1881G18108G6980G6466G4396儲G3132，G1025斷服務(wù)完G6116后。G53QIG11013低變高，開始接收G991一G1022信號G11設(shè)計時應(yīng)注意G1025斷服務(wù)時間小G1122撥號G1881G18108G6980字時間間G19560G12。當(dāng)9G4557G3818發(fā)G5079命令時。8051G4570G1881G18108G6980G6466D0D3G1268送G2052G510G2487。G9994后G1889從G510G2487G1268送G2052MT8880的D0D3，G6980G6466G3324MT8880G1025G13475雙音頻調(diào)制后從TG50G49G40腳G17767出DTMF信號。MT8880控制線的片選信號CSIG17902G17819與G19762G19388與G5125相連，G51251，選G1025MT8880，G51250選G1025程序G4396儲G31322716時G19059信號G110138051的信號提G1391G16847寫信號G53/G58G11013G5126提G1391，G4504G4396G3132片選信號G11013G5127提G1391。G50SC1、G50SC2接3528MG43G93晶振。18G265619G12483G3818接G53C積分電路，使解碼G6980G6466G1147生一G1022延時，讓CG51G56G2499G8503G11842G16847取。DTMF收發(fā)功能模塊電路圖如G9914參數(shù)計算G538、G5310、G5320、G5323G1038100G46電G19471G727晶振G1038358MG43G93G727使G11004運算放G3835G3132G47M324G4557G17767出的DTMF信號放G3835G72723模擬摘機、掛機電路IN1IN2OSC16R/W9CS10RS011CLK212GS3VREF4OSC27TONE8EST18ST/GT19IRQ/CP13VSS5D014D115D216D317VDD20U7MT8880AC120R8100KC10104R20100KY2358R21347KC17104VCCR221KC16001UF121314U9DLM324P20P21P22P23P24P27P26P25INT1R23100KR10100KR12100KR13300R1933KVCCC1801UFC1101UFOUTOUT圖22DTMF收發(fā)功能模塊電路圖10G7693G6466國G4490G7389關(guān)G7643G1946G16280定不論任何電G16817機，摘機狀態(tài)的G11464流電G19471應(yīng)600，G7389“G53”G19202的電子電G16817機的摘機狀態(tài)G11464流電G19471應(yīng)600。G3324掛機狀態(tài)G991，其漏電流5A。當(dāng)G11004戶摘機時，電G16817機G17902G17819叉簧接上G13434600的負G17745，使G6984G1022電G16817線回路流G17819G13434300MA的電流。G1144換機檢測G2052G16825電流后便停止鈴流發(fā)送，G5194G4570線路電G2399變G103810G57左右的G11464流。G7693G6466G7389關(guān)技術(shù)指G7643，模擬摘掛機電路設(shè)計如圖23摘機電路主要G11013一G1022G51G49G51型三G7509G12661控制，當(dāng)8255的17腳G17767出高電平時G1821G13818G4560G17902，G51G49G51型三G7509G12661G4560G17902，電G19471G534接入電G16817線G13605達G2052摘機G11458的。24語音控制電路系統(tǒng)G2045G11004語音控制電路G4466G10628G11004戶G2656系統(tǒng)的G1144流。語音控制電路預(yù)先G4396儲若G5190G8585系統(tǒng)提示音,提示G11004戶G17839G15904系統(tǒng)操作，G1025央G3800理單元電路判斷G11004戶發(fā)送的DTMF信號后,G4557語音提示電路G17839G15904G4559G3348,播放相應(yīng)的提示音,從G13792向G11004戶反饋信G5699提示G991一步G16825如何操作。提高G1114系統(tǒng)的智能化程度。本G8437設(shè)計選G11004美國ISDG1856G2508的語音芯片ISD2560。美國ISDG1856G2508生G1147的ISD系G2027語音芯片，采G11004模擬G6980G6466G3324半G4560G1319G4396貯G3132G11464接G4396貯的G999G2045技術(shù)，G2375G4570模擬語音G6980G6466G11464接寫入單G1022G4396儲單元，不G19668G13475G17819A/D或D/A轉(zhuǎn)換，G3252G8504能夠較G3921地G11507G4466G1889G10628語音的自G9994G6940果，G18003G1825一般G3278G1319語音電路G3252G1038量化G2656G2399縮G6164G17908G6116的量化噪G3780G2656G3845G11507G10628象。另G3818芯片功能G5390G3835G2375錄G2375放、語音G2499掉電保G4396、G790萬G8437的擦寫壽命、G6175動操作G2656CG51G56控制G1872G4493、G2499多片級連、G7092G20047開發(fā)系統(tǒng)G12573，G11842G4466給欲G4466G10628語音功能的14AC2AC3B2QDT1TRANS1C501UFD4ZENER2D3ZENER2R91KPC3R42KR330KQ1PNPOUTU5OPTOISO1C41UFD8LED12JCON2圖23模擬摘機、掛機電路11單片機應(yīng)G11004設(shè)計人員提G1391G1114單片機的解G1927方案。241ISD2560介紹ISD2560采G11004G11464接電平G4396儲技術(shù)，省去G1114A/D、D/A轉(zhuǎn)換G3132，錄音時間G103860S。ISD2560集G6116度較高，G1881G18108G2265G6336G2081置放G3835G3132、G1881G18108時G19059、定時G3132、采樣時G19059、G9400G8886G3132、自動G3698益控制、邏輯控制、模擬收發(fā)G3132、解碼G3132G2656480G46字節(jié)的G40G40G51G53G50MG12573G12573。ISD2560控制電平與TTG47電平G1872G4493，接G2487G12628單，使G11004方便。G4396儲單元G3324寫入語音信號的G2528時，自動清G19512G1114G16825G4396儲單元原G7389的語音信號，從G13792G4466G10628G1114ISD系G2027G3132件的自動抹音。AG50A9G1038地G3348線，G1861G73891024種G13464合狀態(tài)。最G2081G19766的600G1022狀態(tài)作G1038G1881G18108G4396儲G3132的G4559G3348G11004，最后256G1022狀態(tài)作G1038操作模G5347。ISD2560支持G11004戶G4557語音信G5699G11464接地G3348操作。但長達10位的地G3348線G4557單片機G7481說顯得G2487線G2356G11004太多，帶G7481要擴展接G2487的麻煩。G3921G3324ISD語音芯片的操作模G5347給設(shè)計人員提G1391G1114G5468G3835G4466G11004G5627G2656G9801活G5627，使設(shè)計者G3324G4557語音信G5699G8585G17839G15904操作G2656語音G13464合時G7693本G7092G20047知道其地G3348，G13792僅G20047知道語音G8585的相G4557序號G2375G2499。ISD2560的最高地G3348位A8G11腳9G12、A9G11腳10G12置G1038高電平時，芯片G2375G17839入操作模G5347狀態(tài)。操作模G5347G7693G6466引腳A1A8的高低電平不G2528G13464合總G1861分G10386種不G2528的模G5347，G4466G10628不G2528的功能。G5506G3800理G3132接G2487G12483G51/G53錄放音控制G12483，G8504G12483G1038高電平時G1038放音狀態(tài)，低電平時G1038錄音狀態(tài)G727CG40G12483G11004G1122錄放音時的啟?？刂?，G17902G5132與G51/G53G12483配合使G11004G727G40G50MG12483G1038每G8585信G5699結(jié)束信號G17767出G12483，G1038負向信號，時間G1038125MS，上升沿G7643志信G5699結(jié)束。先G11004G19766G2265板搭G3921錄音電路，電路圖如圖24RRES2RRES2RRES2RRES2SSWPBSSWSPDTCCAPCCAPCELECTRO1CELECTRO1A01VCCA16A12VCCD28A23VSSD13A34VSSA13A45AUXIN11A56ANAOUT11A67ANAIN20A78MIC17A89MICREF18A910SP1415PD2422CE23EOM25P/R27U8VCCVCCLSMKMICROPHONE2CCAPCCAPVCC12采G11004DIG5128腳插座放置芯片G17839G15904語音的錄入，G17836G2499隨時G17839G15904改寫。G1038減G4581G7446音，要求電源的G13453G8886較小。G3324G6365G19202模G5347G991G12661腳CG40、G51D、G40G50M的定G1053G7389G6164不G2528，G8504時G111G12CG40的G991降沿控制操作的開始G2656暫停，低G14045G1926G7389G6940，起G1062G1063G19202作G11004，操作一G8437G2375G5430G6116一G8585語音，芯片自動G3324每G8585語音結(jié)G4626G3800放置結(jié)G4626G7643志G40G50M。暫停后G1881G18108地G3348G5194不復(fù)位，G991一G1022G991降沿G14045G1926后從暫停G3800的地G3348G13499續(xù)操作。G112G12G51D的上升沿停止當(dāng)G2081錄放操作，G5194使地G3348指G19036復(fù)位。G113G12G40G50M指示錄放操作G8503G3324G17839G15904，高電平G7389G6940。G2499驅(qū)動發(fā)G1821G1120G7509G12661G17839G15904指示。G4570G6164G19668的語音G17902G17819開始G6365G19074一G8585一G8585從G16817G12582錄入芯片，G2494G19668記G1315各G8585的序號G2375G2499。G1563設(shè)G3324芯片G1025G17902G17819G16817G12582G1393G8437錄入G111414G8585語音如G991G111G12“一”G727G112G12“G1120”G727G113G12“三”G727G114G12“四”G30G115G12“G1128”G727G116G12“G1857”G727G117G12“G983”G727G118G12“八”G727G119G12“G1073”G727G1110G12“G2325”G727G1111G12“G19658”G30G1112G12“G11346”G727G1113G12“度”G727G1114G12“G10628G3324溫度”。如果要系統(tǒng)放出語音“G10628G3324溫度一G11346G1128G2325八度”G16825如何G13464合控制G2614G34（1）先G4570芯片的錄放控制G51/G53G20042G12483置高，地G3348位A4、A0置高，G10628G3324芯片G2375G3800G1122信G5699檢G13046模G5347的信G5699G16847狀態(tài)。（2）接著G3324CG40G12483G2164一不G3835G112210G51S的低G14045G1926，芯片G2375以G8503G5132速度的800G1505向G2081G6207G6563G4396貯G3132，G6640G13046G40G50M結(jié)束G7643志位，G8504時不G17767出音頻信