Underground ultrasonic tillage depth sensor

Details Underground ultrasonic tillage depth sensor Underground ultrasonic tillage depth sensor

1990-01-09

1991-07-16

Steinberger, Brian S.

Communications, electrical: acoustic wave systems and devices

Echo systems

Returned signal used for control

367140, 181124, 172 4, G01S 1500, E02F 920

Patent

active

050330314

ABSTRACT:
A device for determining the depth below the ground surface of a working member of an earth moving equipment, comprises a sensor for transmitting ultrasonic signal from underneath and toward the ground surface and for receiving a portion of the signal reflected from the ground surface. The sensor is positioned underneath the ground surface in fixed spatial relationship to the working member such that the sensor means is under the ground surface when at least a portion of the working member is under the ground surface. A circuit is provided for processing the received reflected signal to thereby indicate the depth under the ground surface of the working member, whereby the depth is proportional to the time of travel of the signal to the ground surface and the reflected signal to the sensor means.

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