可燃性氣體檢測(cè)與報(bào)警系統(tǒng)的外文翻譯--使用無線的可燃?xì)怏w檢測(cè)系統(tǒng)的設(shè)計(jì)-wenkub.com
2025-01-13 12:00 本頁面
【正文】 measurement for circulating fluidized beds [J].Flow Measurement and Instrumentation，2005，16 (23):135144. [2] TGS 813for the Detection of Combustible Gases [DB/OL].20090812.[ 2 ] TGS 813的可燃?xì)怏w檢測(cè)20090812 [分貝/ OL ]。它可以滿足大多數(shù)這需要可燃?xì)怏w濃度的實(shí)時(shí)監(jiān)測(cè)中的應(yīng)用。4）當(dāng)分組正確接收，字頭，地址和CRC比特將自動(dòng)removed, and the data ready pin will be set high.除去，和數(shù)據(jù)準(zhǔn)備好引腳將被設(shè)置高。當(dāng)數(shù)據(jù)傳輸完成后，數(shù)據(jù)準(zhǔn)備好引腳設(shè)置高；3) Beacause of AUTO_RETRAN being high, the data of nRF905 is constantly reissued until3）的auto_retran高因?yàn)?，nRF905芯片的數(shù)據(jù)是不斷地重新發(fā)布到TRX_CE=0.trx_ce = 0。但TC35i串行輸入要求的CMOS電平，和89C52單片機(jī)的串行輸出需要TTL電平。通信頻率為433MHz。無線傳輸模塊；無線收發(fā)器是單片射頻收發(fā)器nRF905實(shí)現(xiàn)。為了電壓適應(yīng)A/D轉(zhuǎn)換器，電壓通過運(yùn)放B擴(kuò)增和放大，可以通過調(diào)整電阻R11。是一個(gè)氣敏電阻傳感器TGS813。AT89S52處理收集到的數(shù)據(jù)和發(fā)送通過無線收發(fā)模塊的主數(shù)據(jù)。氣體濃度信號(hào)是由可燃?xì)怏w傳感器產(chǎn)生微弱電信號(hào)采集。在工作中，可燃?xì)怏wdetectoris全功能（無線），簡(jiǎn)單，體積小，成本低，具有很高的靈敏度。簡(jiǎn)介；氣體檢測(cè)廣泛應(yīng)用于石油，化工，冶金，家庭，商場(chǎng)，加油站和其他地方。信號(hào)采集由傳感器TGS813和A/D轉(zhuǎn)換器TLC2543完成。該系統(tǒng)實(shí)現(xiàn)了氣體濃度的無線傳輸，也可以發(fā)送報(bào)警信息到用戶的移動(dòng)發(fā)生異常時(shí)。s detection capability and accuracy with temperature pensation algorithm, and also can send alarm information to the user39。s mobile phone promptly through the GSM network.System design The system consists of two parts as shown in Figure 1.Fig. 1 Overall system block diagramThe slave part mainly plete data collection and wireless transmission. The master part mainly plete receiving data, displaying and sending alarm message.The signal of gas concentration is collected by bustible gas sensor which generates a weak electrical signal. The signal can be amplified and stabilized by conditioning circuit. And then A/D circuit converts the analog signal to digital signal which microcontroller can process. In order to improve the measurement accuracy, and reduce the impact of temperature, design a temperature pensation circuit to collect tempreture data. AT89S52 process the collected data and send data to the master by wireless transceiver.The master receives the data and displays it by LED. And if the gas concentration being abnormal,the system will drive speaker for an alarm signal and use TC35i module to send alarm information to user’s mobile.Hardware designSignal acquisition and conditioning circuit. Figure 2 shows data acquisition circuit. TGS813 is a Gas sensing resistive sensor. The conductivity of TGS813 is influenced by the concentration of bustible gases in air, the greater the concentration, the higher conductivity. In system R0, R9, R10 and RS (in TGS813) form a bridge circuit to convert resistance to
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