計(jì)算機(jī)控制汽車安全語(yǔ)音提示系統(tǒng)外文翻譯-汽車設(shè)計(jì)-免費(fèi)閱讀
【正文】 全雙工串行口： 8051內(nèi)置一個(gè)全雙工串行通信口，用于與其它設(shè)備間的串行數(shù)據(jù)傳送，該串行口既可以用作異步通信收發(fā)器，也可以當(dāng)同步移位器使用。由于屬于芯片化的微型計(jì)算機(jī)，各功能部件在芯片中的布局和結(jié)構(gòu)達(dá)最優(yōu)化，抗干擾能力加強(qiáng)，工作亦相對(duì)穩(wěn)定。本技術(shù)愿尋求投資者和合作伙伴。然后輪詢各狀態(tài)輸入口線 ,查看是否需要報(bào)警。由于這一循環(huán)時(shí)間是由ＣＰＵ控制 ,因此該系統(tǒng)不會(huì)受到來(lái)自外部聲波的錯(cuò)誤信號(hào)影響。干簧片開(kāi)關(guān)傳感器是一種磁驅(qū)動(dòng)型開(kāi)關(guān) ,其運(yùn)動(dòng)部分質(zhì)量小 ,固有頻率高 ,響應(yīng)速度很快 ,而且使用壽命長(zhǎng) ,即使是在汽車、電車等經(jīng)常有振動(dòng)的場(chǎng)所都可以充分使用 ,特別是可廣泛用于與汽車有關(guān)的監(jiān)控器的傳感器部分。 在整個(gè)設(shè)計(jì)中 ,要求經(jīng)濟(jì)、簡(jiǎn)單、可靠 ,便于推廣。 ｂ注意溫度超限 。 ｄ 檢測(cè)制動(dòng)油油量 。s production Ｔ 6668 chips of speech synthesis is core, additionally adopting again a slice of ＥＰＲＯＭ 27,256 stock record the data of speech sound of good system in advance, managing the data in which is using 8031 , according to the various faults to take the adjust, make up , from the Ｔ 6668 output. In this design the Ｔ 6668 adopts the Ｃ ＰＵ operating pattern and the 8031 connections ,which instruction is written in by the Ｔ 6668 ＣＰＵ interface. The Ｔ 6668 ＣＡＳ 1 end and data input end 、ＤＩ end difference and 74 ＬＳ 165 ( 8 and/string shift register ) ＣＫ end 、ＱＨ end are linked , so ＣＰＵ with only ＥＰＲＯＭ of the data of 27,256 by the data bus line send into 74 Ｌ Ｓ 165 the output of speech sound that gets position. In this design, it is for door , backing a car detection adopted the ＯＲＤ 226 dry spring flat switch sensors. The spring flat switch sensor is a kind of magic drive type switch, which sport partial qualities are little ,and rapid that natural frequency respond speed high and service life grows , even if in the place in which automobile and trolleybus often have vibration , using fully , especially be used in being the sensor with the monitor of relevant automobile extensively part. For the engine machine oil the detection of oil quantity and braking oil quantity adopt ＣＥ 41 5 type floats spring flat liquid position sensor. Measuring the temperature of cooling fluid to use thermistor type liquid use temperature sensor. With the negative thermistor NTC of temperature coefficient, its temperature value and simulated voltage signal bee inverse ratio. Imitate voltage signal to go through condenser strain the INO simulated signal passageway that sent into ADC0 809 after wave. When engine preheats , engine water is warm to be 70 to take to show degree, in the data memory in single flat machine, stocking data is pared , after contrast report to alarm the circuit silent light report to the police. Along with the work of unceasing engine, the water warm beginning of engine goes up gradually, when water is warm to exceed 95 to take to show degree only flat microputer drive report to alarm circuit report to alarm. Reminding the cooling system of driver notice engine the 傳感器 程序存儲(chǔ)器 電子控制器 語(yǔ)言數(shù)據(jù)存儲(chǔ)器 語(yǔ)音合成電路 3 change of temperature. The weared out condition of the detection automobile braking friction flat uses the wear detection sensor. When installing maked friction flat sensor Ｕ the top of word shape the wear limit location that locates in brake brake pad on, when friction flat wear goes to assigned limit Ｕ word shape part have been ground to break, circuit break open. At the same time, this unusual signal will be sent into the single flat microputer. For the detection driver, whether drink choose the semiconductor gas sensor that applies to ethanol gas detection , when the alcohol content in the air of driver39。 ｂ . Noticing the temperature exceed。 ｂ . detecting the cooling water of engine warm up。 ｇ . Detecting the condition of road surface。 ｇ . Braking ineffectiveness is danger。 系統(tǒng)設(shè)計(jì)思想 根據(jù)引發(fā)事故的常見(jiàn)因素 ,這套系統(tǒng)將實(shí)現(xiàn)下列檢測(cè)功能 : ａ 關(guān)車門時(shí) ,檢測(cè)門鎖是否扣 緊 。 汽車發(fā)動(dòng)機(jī)起動(dòng)后系統(tǒng)開(kāi)始檢測(cè) ,當(dāng)發(fā)現(xiàn)異常情況時(shí) ,如車門未關(guān)緊、冷卻水溫過(guò)高、油量不足、倒車時(shí)車后障礙物過(guò)近、摩擦片過(guò)度磨損、路面摩擦系數(shù)過(guò)小、駕駛室的空氣中酒精含量過(guò)高等 ,7 便啟動(dòng)安全語(yǔ)音提示系統(tǒng)發(fā)出語(yǔ)音提示。 ｇ 制動(dòng)失靈危險(xiǎn) 。在本設(shè)計(jì)中Ｔ 6668采用ＣＰＵ操作模式與 8031連接 ,其指令通過(guò)Ｔ 6668的ＣＰＵ接口寫入。 為了檢測(cè)駕駛員是否飲酒 ,選用適用于乙醇?xì)怏w檢測(cè)的半導(dǎo)體氣敏元件 ,當(dāng)駕駛室空氣中的酒精含量達(dá)到一定濃度時(shí) ,向單片機(jī)發(fā)出報(bào)警信號(hào)。 系統(tǒng)軟件 主程序框圖如圖 2所示。設(shè)定定時(shí)器Ｔ 0為 250μｓ ,因此 ,在定時(shí)器Ｔ 0的溢出中斷服務(wù)程序中 ,根據(jù)是否溢出2020次來(lái)判斷是否到達(dá) 0 5ｓ ,同時(shí)對(duì)車輪轉(zhuǎn)速和滑移率的計(jì)算也在該中斷服務(wù)程序中完成。 MCS51單片機(jī)的工作頻率為 212M
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