

FOLLOWUS
1.State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China
2.MOE Key Laboratory of Thermo-Fluid Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China
[ "ZHAO Li-bo, E-mail: libozhao@mail.xjtu.edu.cn" ]
[ "XU Long-qi, hezexulongqi@stu.xjtu.edu.cn" ]
Received:24 September 2012,
Revised:2013-;3-22,
Published:2013-04
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Li-bo ZHAO, Long-qi XU, Gui-ming ZHANG, et al. A trapezoidal cantilever density sensor based on MEMS technology[J]. Frontiers of Information Technology & Electronic Engineering, 2013, 14(4): 274-278.
Li-bo ZHAO, Long-qi XU, Gui-ming ZHANG, et al. A trapezoidal cantilever density sensor based on MEMS technology[J]. Frontiers of Information Technology & Electronic Engineering, 2013, 14(4): 274-278. DOI: 10.1631/jzus.C12MNT06.
A trapezoidal cantilever density sensor is developed based on micro-electro-mechanical systems (MEMS) technology. The sensor measures fluid density through the relationship between the density and the resonant frequency of the cantilever immersed in the fluid. To improve the sensitivity of the sensor
the modal and harmonic response analyses of trapezoidal and rectangular cantilevers are simulated by ANSYS software. The higher the resonant frequency of the cantilever immersed in the fluid
the higher the sensitivity of the sensor; the higher the resonant strain value
the easier the detection of the output signal of the sensor. Based on the results of simulation
the trapezoidal cantilever is selected to measure the densities of dimethyl silicone and toluene at the temperature ranges of 30 to 55 ℃ and 26 to 34 ℃
respectively. Experimental results show that the trapezoidal cantilever density sensor has a good performance.
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