汽車輪胎壓力監(jiān)測(cè)系統(tǒng)

論文編號(hào):JD1143  論文字?jǐn)?shù):14261,頁(yè)數(shù):38

摘要
 大量數(shù)據(jù)表明，對(duì)輪胎正確充氣會(huì)大大降低爆胎的可能性。為了解決這個(gè)問題，輪胎壓力監(jiān)測(cè)系統(tǒng)(TPMS)的研究開始受到重視。直接TPMS 是在每個(gè)輪胎內(nèi)使用壓力傳感器，并安裝無線發(fā)射器，將壓力信息從輪胎內(nèi)部發(fā)送到中央接收器模塊上的系統(tǒng)。使用直接系統(tǒng)，可以隨時(shí)測(cè)定每個(gè)輪胎內(nèi)部的實(shí)際壓力，很容易確定故障輪胎。
 目前直接輪胎壓力監(jiān)測(cè)系統(tǒng)包括4個(gè)或5個(gè)(取決于備胎是否裝備傳感器)輪胎模塊和一個(gè)中央接收器模塊。輪胎模塊由壓力傳感器、溫度傳感器、控制模塊(如ASIC或MCU)、發(fā)射器、天線以及電池組成。也可以包括更多的外部系統(tǒng)，如啟動(dòng)發(fā)射的低頻(LF)探測(cè)器、慣性開關(guān)或無內(nèi)置電池的電源等裝置。
 
 一個(gè)簡(jiǎn)單的接收器模塊由一根中央天線、一個(gè)接收器IC和一個(gè)與車輛其他部分相連接的接口組成。通用接口包括控制器局域網(wǎng)絡(luò)(CAN)接口，該接口通常裝備在車輛的車身控制器內(nèi)。數(shù)據(jù)由車身控制器處理，當(dāng)輪胎壓力低時(shí)，它可以用來向司機(jī)提出警告。
 TPMS （輪胎壓力監(jiān)測(cè)系統(tǒng)）的作用是在汽車行駛過程中對(duì)輪胎氣壓進(jìn)行實(shí)時(shí)自動(dòng)監(jiān)測(cè)，并對(duì)輪胎漏氣和低氣壓進(jìn)行報(bào)警，以確保行車安全。
 本文主要對(duì)模擬信號(hào)放大，A/D轉(zhuǎn)換，以及單片機(jī)控制顯示氣壓作詳細(xì)介紹說明。
 
關(guān)鍵字  TPMS      AT89C51     ADC0809      PTR2000
 
Abstract：The mass datas indicated that, can greatly reduce the blowout to the tire correct gasification the possibility. In order to solve this problem, tire pressure monitor system (TPMS) the research starts to receive takes. Direct TPMS is in each tire the working pressure sensor, and the installment wireless launcher, transmits the pressure information from the tire interior to the central receiver module in the system. Uses the direct system, may determine each tire interior as necessary the actual pressure, very easy definite breakdown tire.
    At present the direct tire pressure monitor system (is decided including 4 or 5 by spare tire whether equips sensor) the tire module and a central receiver module. The tire module by the pressure transmitter, the temperature sensor, the control module (for example ASIC or MCU), the launcher, the antenna as well as the battery is composed. Also may include more external systems in, like the start launch low frequency (LF) the detector, the inertia switch or do not have sets at battery installment and so on power source。
 A simple receiver module by a central antenna, receiver IC and the connection which connect with the vehicles other parts is composed. General connection including control territory network (CAN) connection, this connection usual equipment in vehicles automobile body controller. Data by automobile body controller processing, when the tire pressure is low, it may use for to the driver to give the warning.
    TPMS (tire pressure monitor system) the function is carries on the real-time automatic monitor in the automobile travel process to the tire pressure, and carries on to tire flat with the low atmospheric pressure reports to the police, guarantees the traffic safety.
 This article mainly enlarges to the simulated signal, A/D transforms, as well as the monolithic integrated circuit control demonstration barometric pressure gives detailed introduction showing.
Keyword:  TPMS    AT89C51    ADC0809     PTR2000
 
目錄
第一章  現(xiàn)狀分析 5
第二章 經(jīng)典TPMS系統(tǒng)設(shè)計(jì) 6
2.1 輪胎監(jiān)測(cè)模塊 6
2.1.1 NPX-C10746簡(jiǎn)介 6
2.1.2 監(jiān)測(cè)模塊硬件構(gòu)成 7
2.2 主機(jī)接收顯示模塊 7
2.3 軟件設(shè)計(jì) 8
2.3.1輪胎監(jiān)測(cè)模塊程序設(shè)計(jì) 8
2.3.2主機(jī)顯示模塊程序設(shè)計(jì) 9
2. 4通訊及協(xié)議 10
第三章 系統(tǒng)硬件設(shè)計(jì) 11
3.1  AT89C51芯片介紹 11
3.1.1 89C51引腳功能說明： 12
3.2   典型A/D轉(zhuǎn)換芯片ADC0809 13
3.2.1  ADC0809的內(nèi)部邏輯結(jié)構(gòu)： 14
3.2.2 信號(hào)引腳 15
3.2.3 A/D轉(zhuǎn)換接口方式 16
3.3  硬件設(shè)計(jì)電路圖 17
第四章    系統(tǒng)軟件設(shè)計(jì) 19
第五章  輔助電路及器件介紹 20
5.1 PTR2000無線收發(fā)數(shù)傳模塊介紹 20
5.1.1產(chǎn)品特性： 20
5.1.2 PTR2000的主要特征如下： 20
5.1.3 應(yīng)用領(lǐng)域： 21
5.1.4電氣特性： 21
5.1.5引腳說明（頂視圖）： 22
5.1.6模塊工作模式控制及工作頻道選擇表： 22
5.1.7軟件編程： 23
5.2  儀表放大器AD620 23
附錄一：      外文翻譯原文 27
附錄二：系統(tǒng)程序設(shè)計(jì)源代碼 37
參考文獻(xiàn) 41