Remote metering

G - Physics – 08 – C

Patent

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Details

G08C 17/02 (2006.01) H01Q 1/44 (2006.01)

Patent

CA 2311617

A meter for use in a radio frequency remote metering system comprises an antenna; a transmitter for transmitting meter signals via the antenna; a receiver connected to the antenna for receiving and filtering an incoming radio frequency signal; and a carrier signal detection circuit which is connected to receive the filtered radio frequency signal and which is operable to detect the presence or absence of a carrier signal, and to prevent activation of the transmitter in response to the presence of the carrier signal, to activate the transmitter in response to the absence of the said carrier signal.

La présente invention décrit un compteur destiné aux systèmes H.F. de mesure à distance comprenant une antenne; un émetteur qui émet les signaux de mesure par l'intermédiaire de l'antenne, un récepteur connecté à l'antenne, qui reçoit et filtre un signal H.F. entrant; et un circuit de détection de signal de porteuse. Ce circuit de détection connecté pour recevoir le signal H.F. filtré détecte la présence ou l'absence d'un signal de porteuse, empêche l'activation de l'émetteur en réponse à la présence du signal de porteuse, et active l'émetteur en réponse à l'absence dudit signal.

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