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A mechanical sensing system based on PVDF piezoelectric sensor was designed. Piezoelectric equation of PVDF was studied and simplified for data analysis. The algorithm of power frequency elimination was detailed studied. 4-times sampling was adopted during A/D transformation and the noise induced by 50Hz power frequency was minimized. Butterworth low-pass filter and trap filter was used for noise...
Due to the features of unconventional emergency itself, “Scenario-Response” is regarded as a more effective emergency management mode to unconventional emergency. The whole process of disposal assessment is an important basis for relief decision. This paper describes the scenario-based assessment of whole unconventional emergencies disposal process (pre-disposal, the medium-term disposal, post-disposal),...
Disaster assessment of the whole process of unconventional emergency is an important basis for relief. Unconventional emergency is dynamic and evolutionary which is concentrically embodied by difference information features and assessment objectives of each stage. Based on above, suitable assessment methods should be used. This paper studies on unconventional emergency information features and disaster...
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