Fault tolerant apparatus for detecting the passage of a moving b

Details Fault tolerant apparatus for detecting the passage of a moving b Fault tolerant apparatus for detecting the passage of a moving b

1997-03-31

1999-03-30

Hofsass, Jeffery A.

Communications: electrical

Vehicle detectors

340941, 340936, 34082554, G08G 101

Patent

active

058894780

ABSTRACT:
On the moving body, the apparatus comprises an active transponder, and on the track it comprises a passive responder. The transponder has an LF transmitter and an MF transmitter which, during displacement of the moving body, transmit to a zone through which the responder passes during said displacement. The responder has an LF receiver circuit and an MF receiver circuit having tuned radiating circuits that are associated so that an LF signal induced in the LF circuit causes the MF radiating circuit of the responder to be closed at the LF rate. The transponder responds to disturbances in the MF transmitter caused by the MF circuit of the responder being closed. The MF circuit of the responder includes two units having respective tuned radiating circuits that are strongly coupled together. Each is connected to a respective logic unit which, when excited, delivers a digital message causing the MF radiating circuit to be closed only for bits of a determined value in the digital message.

REFERENCES:
patent: 4034367 (1977-07-01), Sugiyama et al.
patent: 4873531 (1989-10-01), Heddebaut et al.
patent: 4912471 (1990-03-01), Tyburski et al.
patent: 5023942 (1991-06-01), Goepel
patent: 5123095 (1992-06-01), Papadapolous et al.
patent: 5252962 (1993-10-01), Urbas et al.
patent: 5451941 (1995-09-01), Lamazou et al.

Affiliated with

Also associated with

Rating

Fault tolerant apparatus for detecting the passage of a moving b does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fault tolerant apparatus for detecting the passage of a moving b, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fault tolerant apparatus for detecting the passage of a moving b will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1218443