【正文】
a receiving flow chartSummaryDesigned an equipment to detect the concentration of bustible gas, which has wireless transceiver functions and can send the alarm information to user’s mobile promptly through results show that the devices have high precision, stability and reliability. It can meet most applications which need realtime monitoring of bustible gas concentration.References[1] Liu S, Chen Q, Wang H G, eat. Electrical capacitance tomography for gas solids flowmeasurement for circulating fluidized beds [J].Flow Measurement and Instrumentation,2005,16(23):135144.[2] TGS 813for the Detection of Combustible Gases [DB/OL].20090812.[3] Liu Wei, Chen HeXin, Zhang JunWei,etc. Intelligent control and alarm system based onTC35i. International Symposium on Computer Science and Computational Technology(ISCSCT), Shanghai, 2008:8083Manufacturing Process and EquipmentDesign of Combustible Gas Detection System Using Wireless Transmission Technology譯文使用無線的可燃?xì)怏w檢測系統(tǒng)的設(shè)計 傳輸技術(shù)石家莊大學(xué)的經(jīng)濟(jì)學(xué),河北,中國zkzhlp關(guān)鍵詞:TGS813,AT89S52單片機(jī),DS18B20,nRF905,TC35i摘要;可燃?xì)怏w檢測裝置是在所提出的工作設(shè)計,使用無線收發(fā)器和GSM網(wǎng)絡(luò)。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 concentr