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1. 发明公开

EP2878946A4 WIRELESS TEMPERATURE AND HUMIDITY SENSOR AND SYSTEM, AND MEASUREMENT METHOD 失效转让
标题翻译： DRAHTLOSER TEMPERATUR- UND FEUCHTIGKEITSSENSOR UND SYSTEM SOWIE MESSVERFAHREN
公开(公告)号：EP2878946A4
公开(公告)日：2016-05-11
申请号：EP12881689
申请日：2012-11-12
申请人： SHANGHAI INFORECH CO LTD
发明人： ZHENG QIHONG , LI ZECHEN
IPC分类号： G01N29/036 , G01K7/32 , G01K11/22
CPC分类号： G01K11/265 , G01N29/022 , G01N29/036 , G01N29/2462 , G01N29/2481 , G01N29/30 , G01N2291/02845 , G01N2291/02881 , G01N2291/0423
摘要： The present invention provides a wireless temperature and humidity sensor and system, and measurement method. The wireless temperature and humidity sensor comprises a substrate, a feeding network, an antenna and surface acoustic wave resonators, wherein the surface acoustic wave resonators are fed by said feeding network through said antenna. Said surface acoustic wave resonator comprises a reference resonator and measuring resonators. The resonant frequency difference between said reference resonator and said measuring resonators is used to modulate the temperature and/or humidity to be measured. Said system can monitor both temperature and humidity simultaneously, or monitor humidity or temperature selectively. Furthermore, frequency drift caused by aging of the sensor material and the connector is effectively suppressed by the differential modulation, thereby improving long-term stability of measurement and avoiding recalibration.
摘要翻译：本发明提供一种无线温湿度传感器及系统及其测量方法。无线温度和湿度传感器包括基板，馈电网络，天线和表面声波谐振器，其中表面声波谐振器由所述馈电网络通过所述天线馈送。所述表面声波谐振器包括参考谐振器和测量谐振器。使用所述参考谐振器和所述测量谐振器之间的谐振频率差来调制待测量的温度和/或湿度。所述系统可以同时监测温度和湿度，或者选择性地监测湿度或温度。此外，通过差分调制有效地抑制了由传感器材料和连接器的老化引起的频率漂移，从而提高了测量的长期稳定性并避免了重新校准。

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