Method for controlling the position of the suction head of a dre

Details Method for controlling the position of the suction head of a dre Method for controlling the position of the suction head of a dre

1981-11-20

1983-06-14

Crowder, Clifford D.

Excavating

Processes

37DIG1, E02F 100

Patent

active

043875190

ABSTRACT:
Method for controlling the position of the suction head of a dredge in relation to the sludge layer on the bottom of a water way. Acoustic pulses are transmitted in front of the suction head from the dredge to the bottom. The reflected pulses are received and the time difference between the transmitting and the receiving moment is determined as well as the energy difference between the transmitted and received pulses. Based on these differences the configuration and composition of the sludge layers as well as the preferred position of the suction head in relation to said sludge is determined. Thereafter the system for controlling the position of said suction head is operated to bring the suction head into the most favorable position.

REFERENCES:
patent: 3065815 (1962-11-01), Hersey et al.
patent: 3736554 (1973-05-01), Barbier
patent: 3757287 (1973-09-01), Bealor, Jr.
patent: 4168484 (1979-09-01), Wright, Jr.
patent: 4225949 (1980-09-01), Price et al.

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