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《Transducer and Microsystem Technologies》 2015-10
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Design and application of mechanical rotation pulse device for water depth and water level measurement

ZHANG Ye-ming;LI Zhi-guo;WANG Geng;LI Zhong-kai;LIU Xu;WANG Kun-peng;School of Mechanical and Power Engineering,Henan Polytechnic University;School of Mechanical Engineering,China University of Mining and Technology;School of Physics and Mechanic & Electrical Engineering,Xiamen University;  
A new type of mechanical rotation pulse measurement device is proposed,aiming at problem that ultrasonic and photoelectric sensors have poor ability to resist pollution and can't realize water depth and water level detection at the same time. The measurement device points cylinder lifting device,clamping device and control device. In falling process of heavy hammer,the downward displacement,velocity,acceleration of heavy hammer can be obtained through real-time detection on output rotation pulse number of photoelectric encoder. Then the two falling acceleration mutation points of heavy hammer can also be founded when heavy hammer gets into the water and arrives at the solid-liquid interface in a reservoir. Thus the reservoir water depth,water level and precipitation material thickness can be calculated. The measurement result shows that the pollution resistance capability of the device is strong and the water depth measurement error of the device is less than 1 % when the weight of heavy hammer is 510 g and the sampling time interval is 0. 10 s.
【Fund】: 国家自然科学基金资助项目(U1204107 51475459);; 河南省高等学校精密制造技术与工程重点学科开放实验室开放基金资助项目(PMTE201318A);; 河南理工大学博士基金资助项目(B2012—101);; 河南理工大学教改项目(2014JG061);; 河南省教育厅科技技术研究重点项目(14B460033)
【CateGory Index】: TQ056.1
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