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The Research of Laboratory Distillation of Petroleum Analyzer Automation

Author: MaDan
Tutor: ChenLiangCai；RuGengSheng
School: Huazhong University of Science and Technology
Course: Power Engineering and Automation
Keywords: Contact Image Sensor GAL Thermal resistance RS232 SCR Motion detection
CLC: TP273
Type: Master's thesis
Year: 2007
Downloads: 86
Quote: 0
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Abstract


The distillation process is one of the important physical and chemical properties of gasoline , diesel , kerosene and other petroleum products . Petroleum products distillation instrument instrument measured distillation range of petroleum products , widely used in various oil -use sectors . The disadvantage of domestic petroleum products distillation experiments instrument dependent on the prevalence of manual operation , the measurement accuracy is not high measurement reliability by human factors . Computer and sensor control technology continues to evolve , to provide strong technical support for the automation and intelligence of petroleum products distillation experimental instrument , petroleum products distillation instrument automation can be implemented . Based on petroleum products distillation experiments , the flow tiny , no pressure , not full pipeline , intermittent flow characteristics of CIS devices to measure the flow rate of distillation recovery solution , use the GAL the device fabrication drive circuit the AT89C51 microcontroller processing the output signal and PC communications to achieve automation of the recovered liquid was measured . Thermal resistance temperature sensor to measure the oil temperature and manifold at the gas temperature , temperature instrument wiring standards and communication protocols , the function of the the connection heat resistance and read digital temperature information . SCR Power module using the D / A converter with automatic control method of oil heating power , making the drive circuit and the preparation of the program on the PC and microcontroller , power control digitized . Using a USB camera to capture the distillate liquid measuring cylinder entrance screen , motion detection method based on video analysis to detect the initial boiling point . This approach has a flexible , intuitive , and easy to adjust measurement characteristics . Above partially completed on the basis of the preparation of the PC on the overall test and control procedures , provides a good man-machine interface , multi - threaded approach to individual physical read and write , to ensure better program reaction speed and control of real-time overall reliability is higher . Complete monitoring and control functions on the PC at the same time , experimental instrument communication on embedded devices and video capture , control algorithm mature ported to embedded devices , the formation of a truly automated instrument provides technical support .

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