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http://dx.doi.org/10.5369/JSST.2019.28.3.177

Error Compensation due to Environmental Temperature for Diaphragm-Type Pressure Sensor  

Yun, Dae Jhonng (School of Mechtronical Engineering, Pusan National University)
Ahn, Jung Hwan (School of Mechtronical Engineering, Pusan National University)
Lee, Gil Seung (Novasen Co.,Ltd)
Kim, Hwa Young (School of Mechtronical Engineering, Pusan National University)
Publication Information
Journal of Sensor Science and Technology / v.28, no.3, 2019 , pp. 177-181 More about this Journal
Abstract
Pressure sensors are used in various industries such as automobiles, airplanes, medical equipment, and coolers. Even if the ambient temperature changes, the measurement is reliable and stable. In this study a diaphragm-type pressure sensor was used to derive a temperature-compensated pressure estimation equation for accurate pressure measurement at $100^{\circ}C$ and $-40^{\circ}C$. To understand the characteristics of the pressure sensor diaphragm with respect to temperature and pressure, experiments were conducted in temperature-variable chamber using FEM analysis to confirm that the influence of temperature effect was nonlinear. Based on the experimental results, a nonlinear method for calculating the pressure by compensating for the error due to temperature was derived. The calculated pressure value is lower than 0.5 % at low and high temperatures, and lower than 0.4 % at $22^{\circ}C$, thereby eliminating the effect of temperature.
Keywords
Pressure sensor; Diaphragm; Error compensation; Displacement; Temperature effect;
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Times Cited By KSCI : 2  (Citation Analysis)
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