基于单片机的油水界面检测

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第 2期 李少华等.循环流化床烟气脱硫喷嘴角度布置的试验研究 195Experimental Study on Nozzle Angle Layout inCirculating Fluidized Bed Flue Gas DesulfurizationLI Shao-hua ，W ANG Hu ，LIU Da-ren(1.China Datang Corporation Science and Technology Research Institute Co.，Ltd，Beijing 102206，China；2.School of Energy and Power Engineering，North China Power University，e ng 102206，China；3.Colge ofEnergy and Power Engineering，Northeast Dianli University，Jilin 132012，China)Abstract The particle image velocimetry(PIV)was employed to research nozzle angle layout in circulatingfluidized bed flue gas desulfurization.In radial direction，30。，45。，-30。and -45。between the nozzle anddesulfunzer in radial direction were taken respectively and the flow field of spray water was detected and im-aged as well as the motion parameter of the flow field was analyzed with PIVs Insight 3 G software.The re-search result shows that when the nozzle angle stays at-45。in radial direction.the spray waters axial speedcan become smaller togetheiwith a bigger axial acceleration，and the average value of its turbulent kinetic ener-gY can exceed that of other three layouts，this can benefit the full desulfurization。

Key words circulating fluidized bed，flue gas desulfurization，nozzle angle，PIV(上接第175页)改，避免了油水界面随原油密度变化出现较大误差的情况。该系统具有结构简单、经济且使用方便的优点，而且减轻了工人的劳动强度，具有广泛的应用前景。

MCU-based Detection of Oil-W ater InterfaceCHENG Nan .CHENG Yuan .TANG Guo.qiang(1.School of Electronics and Information，Yangzi University，Jingzhou 434023，China；2.CSIC No.717 Institute，Wuhan 430074，China；3.CPE Xinfiang Exploration＆Design Institute，Karamay 834000，China)Abstract Both working principle and characteristics of a MCU.based oil .water interface detection methodwere introduced.The system can implement serial communication with the host computer via R$232 and candevelop serial communication program based on VB6.0；the computer can automatically detect tank pressureand level and then transmit them for later analysis so that the current tanks oil.water interface can be calcu-lated directly with the help of the pressure-level conversion principle。

Key words oil-water interface，MCU，serial communication，VB6.0，pressure-level conversion principle(Continued from Page 189)T/a ，l 300130，China；2.China Packaging Research& Test Center，Tia n 300162，China)Abstract Aiming at the centralized supervision，local distribution and overall mobility，a cold chain transpor-tation monitoring system was designed；and STM32 microprocessor-cored data transfer module and Ad Hoc net-work of SX1212 chip-based wireless model for the cold chain transportation were introduced specialy.The sys-tern can monitor temperature and humidity，battery capacity and transit route so as to reduce transportationloss；and compared with ZigBee scheme，this scheme has lower power consumption。

Key words cold chain transportation monitoring system，data transfer，STM32，wireless Ad Hoc network，bi-nary tree and frame timeslot fusion algorithm