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An over-voltage online monitoring system based on the impulse full current of arrester is developed in this paper. The system measures the wave head and amplitude of the impulse full current of arrester through external-integral rogowski coil, and transfers the measurement result to the upper computer via USB optical measuring system, and then implements the measurement and monitoring on over-voltage...
Using GIS technology and the slope stability algorithm, the landslide stability system realizes intellectualized slope monitor calculation. The system can call lots of mainstream limit equilibrium analysis algorithms, read charts and calculate with computer, greatly reduce the influence of errors, and improve the accuracy of the final result, provide reliable basis for monitors. The system is developed...
The accumulation of fatigue damage in critical structural members of the aging aircrafts is an increasingly complex and continuing high priority problem. There is growing evidence that (i) multiple site damage or multiple element damage may compromise fail safety in older aircrafts, and (ii) significant fatigue damage, with subsequent formation of cracks, may occur at locations not considered in original...
Eutrophication is a persistent problem that affects the ecological health of many shallow lakes in China. An indicator used to monitor trophic status is chlorophyll-a; however, collection and analysis can be spatially limiting and time consuming. In this study we utilized Landsat 7 ETM+ (Path/Row 119/39) imagery for West Lake, Hangzhou, to map chlorophyll-a concentrations. An optimal linear regression...
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