Research On Application Of High-performance Embedded System In Two-phase Flow Measurement

Two-phase flows exist in fields such as power, chemistry, petrol, metallurgy, pipeline transportation, medicine and refrigeration industries. Its parameters' measurement is very important to the national economy and industry production. At the same time, the process of two-phase flow is quite complex and the measurement, is quite difficult. The traditional measurement equipments based on MCU or PC are not suitable for two-phase flows measurement in industry applications. Thus the research and development of practical measurement instruments is quite needed.This thesis combined embedded system design and multi-sensor information fusion.A practical embedded system for two-phase flow measurement was developed. A newmodel of the research of two-phase flows measurement equipment was introduced.And the application of two-phase flows measurement technology in industry field wasdiscussed.The main contributions of the thesis are as follows:1. Based on plenty of thorough reading of relative papers, the methods of two-phase flow measurement was summarized, the main points and the development trend of the measurement of two-phase flow were analyzed.2. The design method of embedded system was applied to the development of two-phase flow measurement instrument. The hardware-software Co-Design model provides a new method to the research and development of two-phase flow measurement instruments.3. Multi-sensor information such as pressure, temperature, ECT, was fused to develop a two-phase flow measurement system base on embedded PC 104. It integrates high-speed data acquisition, processing, flow-rate computing, real-time curve displaying and Ethernet communication.4. A lot of experiments on gas-oil two-phase flow measurement were performed, several data filter algorithms were applied during the experiments. The data of experiments showed that the system entirely met the design demand...