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Based on image sequence, a void fraction measurement model of gas-liquid two-phase flow in mini-pipe is developed using support vector regression (SVR) and particle swarm optimization (PSO). A high-speed image acquisition system is constructed to capture dynamic gray image sequence of gas-liquid two-phase flow. The area ratio of gas phase in longitudinal section of the pipe for every image of image...
Research on 3D GIS simulation system of pit mining surface subsidence is not merely simple extension of 2D geographic information system, but from spatial model analysis to spatial database structure until visualization of 3D data. The research and application of this system have important and positive significance on evaluation of mining surface subsidence damage, control of mine geological disaster,...
Temperature and humidity control of the intelligent greenhouse is an important link of monitoring. This paper uses Surplus 16-bit single chip microcomputer as the core control of the system. Combined with wireless transceiver chip NRF401, USB interface device PDIUSBD12 and temperature and humidity module YXHT300U, we designed a wireless temperature and humidity monitoring system which used in intelligent...
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