電子設(shè)計(jì)大賽時(shí)，自己設(shè)計(jì)的基于51單片機(jī)控制的出租車(chē)計(jì)價(jià)器，包括硬件電路以及程序代碼


9700字 23頁(yè)














摘 要：出租車(chē)計(jì)價(jià)器是乘客與司機(jī)雙方的交易準(zhǔn)則，它是出租車(chē)行業(yè)發(fā)展的重要標(biāo)志，是出租車(chē)中最重要的工具。它關(guān)系著交易雙方的利益。具有良好性能的計(jì)價(jià)器無(wú)論是對(duì)廣大出租車(chē)司機(jī)朋友還是乘客來(lái)說(shuō)都是很必要的。因此，汽車(chē)計(jì)價(jià)器的研究也是十分有一個(gè)應(yīng)用價(jià)值的。 而采用模擬電路和數(shù)字電路設(shè)計(jì)的計(jì)價(jià)器整體電路的規(guī)模較大，用到的器件多，造成故障率高，難調(diào)試，對(duì)于模式的切換需要用到機(jī)械開(kāi)關(guān)，機(jī)械開(kāi)關(guān)時(shí)間久了會(huì)造成接觸不良，功能不易實(shí)現(xiàn)。而采用單片機(jī)進(jìn)行的設(shè)計(jì)，相對(duì)來(lái)說(shuō)功能強(qiáng)大，用較少的硬件和適當(dāng)?shù)能浖嗷ヅ浜峡梢院苋菀椎膶?shí)現(xiàn)設(shè)計(jì)要求，且靈活性強(qiáng)，可以通過(guò)軟件編程來(lái)完成更多的附加功能。針對(duì)計(jì)費(fèi)模式的切換，通過(guò)軟件編程就可以輕易而舉的實(shí)現(xiàn)。避免了機(jī)械開(kāi)關(guān)帶來(lái)的不穩(wěn)定因素。另外在本方案中使用了發(fā)光的數(shù)碼管顯示，數(shù)據(jù)信息一目了然，并且即使是成品也可以方便的修改使用界面，更可根據(jù)不同的公司客戶(hù)使用不同的局面。



關(guān)鍵詞：出租車(chē)計(jì)價(jià)器 51單片機(jī) 控制











Taximeter Based on MCU



Abstract：Taximeter is both passengers and drivers of the transaction criteria, it is the taxi industry an important symbol, a taxi is the most important tools. It relates to the interests of both transactions. Has a good performance regardless of the meter is a vast number of taxi drivers or passengers are very necessary. Therefore, the car meter is also very much a study of value. The use of analog circuits and digital circuit design of the meter as a whole circuit of a larger scale, using the device, a failure rate is high and difficult to debug, the pattern of switching need to use mechanical switches, mechanical switch will cause a long-time contacts Bad, functions not easy to achieve. SCM used for the design, a relatively powerful, with less hardware and appropriate software can easily coordinate with each other to achieve the design requirements, flexibility and strong, can be programmed by software to complete more of the additional Function. Pricing model for the switch, software programming and can easily cite the achievement. To avoid a mechanical switch the destabilizing factors. Also in this programme that the use of a LED, can be more friendly to use interface. Data information at a glance, and even the finished product can also facilitate the use of interface changes, according to different customers using a different situation.



Keywords: Taximeter 89C52 MCU control















目 錄



1 緒論 1



2 方案選擇與論證 2



2.1功能要求 2



2.2方案論證 2



3 系統(tǒng)硬件的設(shè)計(jì) 3



3.1 AT89S52結(jié)構(gòu)及其功能 3



3.2 LM358結(jié)構(gòu)及其功能 8



3.3 單元電路 9



3.4 整體電路 10



4 系統(tǒng)軟件的設(shè)計(jì) 11



4.1 初始化程序 11



4.2 主程序 11



5 調(diào)試及性能分析 13



5.1調(diào)試與測(cè)試 13



5.2性能分析 13



6 結(jié)論 13



致謝 14



參考文獻(xiàn) 15



附錄 16