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A Wireless and Passive Low-Pressure Sensor
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DOI：10.3390/s140203065.png)
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摘要
En 中文
This paper will discuss the results obtained with a first prototype of a completely passive and wireless low pressure sensor. The device is a heat conductivity gauge, based on a wireless and passive SAW temperature sensor. The required heating energy is applied to the sensor using inductive coupling. The prototype was successfully tested in a vacuum chamber. Its equilibrium temperature changed drastically and in a reproducible way when pressure steps were applied. However, the response time was very long. A model is provided to account for the sensor's behavior. It is then used to show that the response time could be strongly improved using basic design improvements. Further possible improvements are discussed.
Keyword:
low pressure sensor
Pirani
wireless
passive
SAW
inductive heating
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3.5
论文数:
7.2W
被引数:
20.9W
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