Load detecting system for automatic storage apparatus

Details Load detecting system for automatic storage apparatus Load detecting system for automatic storage apparatus

G - Physics

01

S

349/33

G01S 15/10 (2006.01) G01S 15/88 (2006.01)

Patent

CA 1197313

LOAD DETECTING SYSTEM FOR AUTOMATIC STORAGE APPRATUS ABSTRACT OF THE DISCLOSURE Apparatus for detecting a load within a preselected bin of an automatic storage rack has a transducer for directing an ultrasonic beam into the bin and for detecting an echo reflected from a load struck by the beam; a digital counter adapted to generate plural bit binary pulses which is started upon initial trans- mission of the ultrasonic beam; and a programmable memory coupled to the counter and programmed to generate a given bin-full output signal upon initial transmission of the beam and to subsequently generate the opposite binary bin-empty output signal if no echo has been detected when the pulses from the counter stored in the memory indicate that sufficient time has elapsed after initial trans- mission for the beam to travel a predetermined distance into the bin and for an echo from a load struck by the beam to return to the transducer.

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