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1、無(wú)線遙控是rfl遙控器和超再生固定碼接收模塊組成,不但可很好的作為AT89S52單片機(jī)的信號(hào)輸入源,而且十分方便用戶的體驗(yàn)。利用無(wú)線遙控來(lái)啟動(dòng)/關(guān)閉汽車的語(yǔ)音警報(bào)系統(tǒng),可以去除現(xiàn)有汽車配置的缺點(diǎn):目前汽車配置是當(dāng)按下遙控,汽車僅是以閃燈或者是鳴一下笛表示汽車以上防,實(shí)踐證明,這不是十分穩(wěn)妥的辦法,人們往往會(huì)再次去開(kāi)一下車門,通過(guò)親手試開(kāi)車門,來(lái)表示是否真的上鎖,而這往往就顯得多余。而本系統(tǒng)的設(shè)計(jì),正是基于這點(diǎn),利用已有的無(wú)線遙控模塊,對(duì)于汽車的上防加以改進(jìn),增加一項(xiàng)語(yǔ)音報(bào)警,當(dāng)用戶按下了一個(gè)“防”按鍵,啟動(dòng)汽車的上防設(shè)備,一旦汽車正常上防,則語(yǔ)音
2、提示:“上鎖完成。”否則提示:“上鎖失敗”。當(dāng)解除鎖定狀態(tài)時(shí),按一下“用”鍵,則語(yǔ)音提示:“謝謝使用”。本汽車無(wú)線遙控語(yǔ)音報(bào)警系統(tǒng)主要由AT89S52單片機(jī)電路、無(wú)線遙控模塊、WTD588D語(yǔ)音模塊、TDA2030音頻功率放大電路、8路繼電器動(dòng)作電路、3.3V及5V供電電路組成。AT89S52單片機(jī)是此系統(tǒng)的控制核心,無(wú)線遙控部分是觸發(fā)電路,WTD588D是負(fù)責(zé)對(duì)語(yǔ)音的存儲(chǔ)及播放,音頻功放主要是為了推動(dòng)揚(yáng)聲器工作,而8路繼電器是為了來(lái)模擬汽車上鎖的動(dòng)作,通過(guò)弱電來(lái)控制強(qiáng)電,提高系統(tǒng)的應(yīng)用場(chǎng)合。軟件環(huán)境:keil4集成開(kāi)發(fā)環(huán)境、Protues7Pr
3、ofessional也路設(shè)計(jì)、AltiumDesigner版圖制作;輔助設(shè)備:示波器、電烙鐵、萬(wàn)用表、電鉆機(jī)等。實(shí)施步驟:先托Protues7Professional屮完成必要的硬件設(shè)計(jì)與仿真,繼而W進(jìn)行軟件的開(kāi)發(fā)設(shè)汁,最后在根據(jù)實(shí)件電路原理圖繪制PCB電路版圖。Asisknowntoal1,currentlycaralarmsystemiscontrolledtostartbyawirelessremotecontrol.Startingtheprocess,thedomesticcarwillbeepandlightsflashed,andf
4、oreignonearejustflashedlightsonly.Butwiththedevelopmentofsmartdevices,communicationbetweencarsandpeopleshouldtendtobemorehumane.Forthispoint,thecar'salarmsystemisdesignedtoaddthevoicebroadcastandeightrelaycircuits>8-wayrelayisusedforextensionofperipheralcircuit,isappliedtoach
5、ievethegoaloflowvoltagecontrolhighvoltage.Thispaperfocusesonthedesignofthesystemfromthreeaspects,namely,thefunctiondescribed,hardwaredesignandsoftwaredesign.Thehardwaredesign,mainlyAT89S52microcontrollercircuitasthecore,supplementedbynecessarymicrocontrollerminimumsystem,thek
6、eyfunctionmoduleisawirelessremotecontrolmodule,WTD588Dvoicemodule;keycircuitdesignisTDA2030audiopoweramplifiercircuitandeightrelaycircuitsandpowersupplycircuits.Thepowersupplycircuit,alowvoltagemainlyis3.3Vand5V,thesetwovoltagesarerespectivelysuppliedtothevoicemoduleandthemic
7、rocontroller.Butinordertodrivehighpowerofspeakers,theinputvoltageofamplifiercircuitwillneedtobeveryhigh,consideringthecarbatteryvoltageis12v,sotheinputvoltageofthesystemis12v.Thepartofsoftwaredesign,firstgivetheprogramframework,divideintomodulesonebyonetocomplete,andtheninteg
8、rateeachmoduletocomprehensivedebugging,finallyrealizethewirelessremo