The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 08, 2010
Filed:
Dec. 28, 2007
James D. Cook, Freeport, IL (US);
Brian J. Marsh, Freeport, IL (US);
Mohammed a J Qasimi, Freeport, IL (US);
Daniel Dixon, Cedarville, IL (US);
Sachin Kumar, Freeport, IL (US);
James D. Cook, Freeport, IL (US);
Brian J. Marsh, Freeport, IL (US);
Mohammed A J Qasimi, Freeport, IL (US);
Daniel Dixon, Cedarville, IL (US);
Sachin Kumar, Freeport, IL (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
A wireless and batteryless pressure sensor apparatus comprises of a SAW sensor and an antenna mounted on a printed circuit board. Optionally, and RFID tag in used in combination with the SAW sensor. A sensor antenna and a RFID antenna can be located on the printed circuit board such that the antennas communicate electrically with the sensor and the RFID device. The sensor can be interrogated utilizing a radio frequency, which is used to excite a SAW crystal inside the sensor. The interrogation signal causes the SAW to resonate wherein a resonant frequency changes with the pressure and temperature that is applied to the sensor. An interrogator can receive a return (echo) signal representing a change in SAW sensor properties (e.g., diaphragm change). A printed circuit board can be mounted on a stainless steel port and overpackaged with standard processes for hermetically sealing the sensor, or sensor and RFID device with at least one antenna.