发明授权
- 专利标题: Wireless sensor antenna configuration
- 专利标题(中): 无线传感器天线配置
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申请号: US11300090申请日: 2005-12-13
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公开(公告)号: US07377168B2公开(公告)日: 2008-05-27
- 发明人: James Zt Liu
- 申请人: James Zt Liu
- 申请人地址: US NJ Morristown
- 专利权人: Honeywell International Inc.
- 当前专利权人: Honeywell International Inc.
- 当前专利权人地址: US NJ Morristown
- 代理商 Richard H. Krukar; Luis M. Ortiz; Kermit D. Lopez
- 主分类号: H03H9/25
- IPC分类号: H03H9/25 ; G01L11/04
摘要:
Many sensors could be used in a passive wireless mode. These include RLC, acoustic wave and magneto-elastic sensors. These types of sensors are designed to exhibit a change in fundamental frequency when exposed to environmental factors such as temperature, pressure, or chemicals. An interrogation circuit can inductively couple to the sensor and measure the change in fundamental frequency. The change can be used to measure the environmental factor. Sensor sensitivity and inductive coupling efficiency can be competing design constraints. A driver, electrically connected to the sensor and inductively coupled to the interrogation circuit, can relax the constraints. The driver, however, can introduce noise into the sensor. The sensor can be shielded using physical and geometric techniques to reduce the noise.
公开/授权文献
- US20070131032A1 Wireless sensor antenna configuration 公开/授权日:2007-06-14