Weight determining apparatus utilizing acoustic wave elapsed...

G - Physics – 01 – G

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G01G 9/00 (2006.01) G01G 19/08 (2006.01)

Patent

CA 2071843

A method and apparatus for determining of weight on a strucutre which utilizes an acoustic wave transmitting tranducer (30) and an acoustic wave receiving transducer (32). The elapsed time of transmission of the acoustic wave between the transmitting transducer and the receiving transducer varies according to the amount of weight on the load bearing member within the structure upon which the transducers are fixedly mounted. By determining of the elapsed time and comparing same in computer (58) to a known weight versus elapsed time curve, the current weight can be determined for the structure.

Procédé et appareil de détermination de poids sur une structure, utilisant un transducteur (30) de transmission d'ondes acoustiques ainsi qu'un transducteur (32) de réception d'ondes acoustiques. Le temps écoulé de transmission des ondes acoustiques entre le transducteur de transmission et le transducteur de réception, varie selon la quantité de poids se trouvant sur l'élément porteur de charge, dans la structure sur laquelle les transducteurs sont montés de manière fixe. On peut déterminer le poids effectif de la structure par détermination du temps écoulé et par comparaison de celui-ci dans un ordinateur (58) à un poids connu par rapport à une courbe de temps écoulé.

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