Apparatus and method for interrogation of passive sensors

Details Apparatus and method for interrogation of passive sensors Apparatus and method for interrogation of passive sensors

2006-04-25

2006-04-25

Horabik, Michael (Department: 2635)

Communications: electrical

Selective

Interrogation response

C340S442000, C340S445000, C340S449000, C073S146500, C455S232100

Reexamination Certificate

active

07034661

ABSTRACT:
A monitoring system, particularly suitable for monitoring conditions (e.g. pressure or temperature) of a vehicle tire comprises a passive sensor (102, 104), an antenna (106) associated with said passive sensor, and switching means (108) for controlling the connection between the passive sensor and the antenna such that, in a first state of said switching means, said antenna is prevented from transmitting a signal generated by the passive sensor, and, in a second state of said switching means, said antenna is permitted to transmit a signal generated by the passive sensor. The switching means is operated remotely by means of a control signal. The control signal may be derived from the sum or difference of RF signals (F1and F2) applied to a filter (112) In alternative embodiments the control signal is the modulating frequency of an AM or FM modulated radio signal or a radio signal carrying a digital code.

REFERENCES:
patent: 4584716 (1986-04-01), Drentea
patent: 5231872 (1993-08-01), Bowler et al.
patent: 5513525 (1996-05-01), Schurmann
patent: 5731754 (1998-03-01), Lee, Jr. et al.
patent: 5749984 (1998-05-01), Frey et al.
patent: 6438193 (2002-08-01), Ko et al.
patent: 6591671 (2003-07-01), Brown
patent: 2002/0119759 (2002-08-01), Hahn
PCT/GB00/04910 International Search Report.

Affiliated with

Also associated with

Rating

Apparatus and method for interrogation of passive sensors does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for interrogation of passive sensors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for interrogation of passive sensors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3606645