Wireless Moisture Sensor Using a Microstrip Antenna
Wireless Moisture Sensor Using a Microstrip Antenna
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DOI：
10.1155/2011/827969
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发表时间：
2011-01-01
影响因子：
1.9
通讯作者：
Kitagawa, Akio
中科院分区：
文献类型：
--
作者：
Toba, Tatsuo;Kitagawa, Akio
基于微带天线的后向散射特性，研制了一种无电池远场工作的无线水分传感器。本研究旨在开发一种具有远距离通信距离的无线传感器，并将其应用于生物隔离系统中包装产品的水分监测和过氧化氢的表面吸附等方面。通过测量传感器在0.954 GHz和2.45GHz频率下的背向散射功率，可以清楚地检测到蒸馏水在清洁组织上的滴状添加。两个频段的后向散射功率之比可以作为测量水分的一个指标。
A wireless moisture sensor has been developed on the basis of the backscatter characteristic of the microstrip antenna, which works in the far field without a battery. This study aims to develop a wireless sensor with a long communication distance and to apply the wireless applications, such as monitoring the moisture in the wrapped products and surface adsorption of hydrogen peroxide in the biological isolation systems. The dropwise addition of the distilled water on the cleaning tissue is clearly detected by the measurement of the backscattered power from the sensor at the frequencies of 0.954 GHz and 2.45 GHz. The ratio of the backscattered power in two frequency bands can be used as an index to measure moisture.