Ultrasonic displacement sensor using envelope detection

G - Physics – 01 – P

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Details

G01P 13/00 (2006.01) G01S 7/527 (2006.01) G01S 15/04 (2006.01) G01S 15/52 (2006.01) G08B 13/181 (2006.01) H05B 1/02 (2006.01) H05B 37/02 (2006.01) G01S 15/02 (2006.01)

Patent

CA 2440781

An apparatus and method is provided for detecting motion or displacement of an object in a monitored zone. The apparatus is disposed between a load and a power source and comprises a transmitter for providing a pulsed signal within a monitored zone. The pulsed signal interacts with objects in the monitored zone and provides a return signal. A receiver receives echoes from a return signal of the pulsed record signal, and a microcontroller circuit processes the echoes. The processing involves retrieving and comparing phase and amplitude information associated with the echoes.

Appareil et méthode pour détecter le mouvement ou le déplacement d'un objet dans une zone surveillée. L'appareil est placé entre une charge et une source d'alimentation et comprend un émetteur pour l'envoi d'un signal pulsé dans la zone surveillée. Le signal pulsé interagit avec les objets qui se trouvent dans la zone surveillée et émet un signal de retour. Un récepteur reçoit les échos du signal de retour du signal d'enregistrement pulsé, et un circuit de microcontrôle traite ces échos. Le traitement comprend la récupération et la comparaison des valeurs de phase et d'amplitude associées aux échos.

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