摘要
为了测量深海大压力及其微小波动压力,基于液体的可压缩性、活塞的平衡和差压敏感元件的特性提出了一种压力测量方法。首先介绍了该方法的工作原理,其次建立了测量系统的仿真模型,然后进行了仿真实验,分析了不同参数对系统的影响,并对参数进行了优化选取,仿真结果表明,该方法能够对大压力和微小波动压力进行高精度测量,最后搭建了样机平台。试验结果表明在20 bar压力下实现了静压力误差0.2 bar的压力跟踪测量,实现了4×10^-3bar的微小波动压力的测量,证明了该方法的可行性和正确性。
In order to measure the deep sea pressure and its small fluctuating pressure, a pressure measurement method is proposed based on the compressibility of liquid, the balance of piston and the characteristics of differential pressure sensor. Firstly, the working principle of the method is introduced. Secondly, the simulation model of the measurement system is established. Then the simulation experiment is carried out. The influence of different parameters on the system is analyzed, and the parameters are optimized. The simulation results show that the method can measure high pressure and small fluctuating pressure accurately. Finally, a prototype platform is built. The experimental results show that the pressure tracking measurement with static pressure error of 0.2 bar is realized under 20 bar pressure, and the microwave dynamic pressure measurement with 4×10^-3 bar is realized, which proves the feasibility and correctness of the method.
作者
王淮阳
胡珊珊
刘正士
王勇
Wang Huaiyang;Hu Shanshan;Liu Zhengshi;Wang Yong(School of Mechanical Engineering,Hefei University of Technology,Hefei 230009,China)
出处
《电子测量与仪器学报》
CSCD
北大核心
2019年第11期155-161,共7页
Journal of Electronic Measurement and Instrumentation
基金
国家自然科学基金(U1713210,51279044)资助项目
关键词
深海
压缩性
活塞
压力平衡
差压
deep sea
compressibility
piston
pressure balance
differential pressure
