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Development of the Secondary Device for Wet Gas Flow Meter

Author: ZhangFangFang
Tutor: ZhengJinWu；GengYanFeng
School: China University of Petroleum
Course: Signal and Information Processing
Keywords: Secondary instrument Digital Signal Processor Data acquisition Universal Serial Bus Bootloader
CLC: TH814
Type: Master's thesis
Year: 2008
Downloads: 62
Quote: 0
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Abstract


Natural gas condensate , gas-liquid two-phase flow is an important basis for monitoring wells and gas reservoir dynamic characteristics in two-phase flow measurement , there are still many problems to be solved . The two - phase flow metering system as the core , if the PC or IPC will cause the system bulky , high power consumption , this paper the use of digital signal processing and embedded technology , developed a small size , low power consumption , portable gas condensate natural gas flow measurement instrumentation . The main task of the secondary instrument on the basis of analyzing the overall design of the flow metering system to determine the composition and the functional modules , then the secondary instrument hardware circuit analysis and improved programming function of each part of the software system , and each functional module software combinations. The main tasks are: auxiliary data acquisition of DSP chip DMA controller makes the CPU work properly with the background the DMA data collection at the same time , improve the efficiency of the entire system ; design USB embedded host system and the FAT16 file system , the collected data stored as files through the USB interface to the U disk , removable storage of data ; design LCD and keyboard interface , and the appropriate software , the instrument has a friendly man-machine interface ; Flash system programming techniques and bootstrap the boot process to achieve the independent operation of the entire system . The modular design system using C language program readability, ease of software maintenance and upgrades . The instrument to achieve the A / D acquisition , USB mobile storage , human-computer interaction , independent operation of basic functions , easy to use , easy to promote the use of the instrument for the two-phase flow measurement technology from the laboratory to field applications provide a good solutions.

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CLC: > Industrial Technology > Machinery and Instrument Industry > Instruments, meters > Thermal measuring instruments > Flow Meter
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