Title:
UNDERWATER WORK APPARATUS POSTURE MONITOR
Document Type and Number:
Japanese Patent JP2938329
Kind Code:
B2
Abstract:
PURPOSE: To monitor accurately an inclination or a depth of an underwater work apparatus without relying on a length of a suspending wire of the apparatus or without laying down a sensor cable.
CONSTITUTION: An X axis directional inclination sensor 5, a Y axis directional inclination sensor 6 and a depth sensor 7 as occasion demands are installed in an underwater work apparatus, and an inclination or a depth of the apparatus is converted into a frequency control signal by a CPU 4. An output frequency of a variable frequency signal output circuit 13 is controlled by this signal, and is converted into a frequency, and is proparated as an ultrasonic wave from an echo sounder transmitter 1 through a transmitting part 2, and this ultrasonic wave is received by an echo sounder receiver 8 on the work vessel side, and after it is amplified by a receiving part 9, the frequency is detected by a frequency detecting part 10, and the inclination or the depth is calculated from the frequency by an operation part 11, and it is displayed by a display part 12.
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Inventors:
KOYAMA KENICHI
Application Number:
JP34007293A
Publication Date:
August 23, 1999
Filing Date:
December 07, 1993
Export Citation:
Assignee:
KAIJOO KK
International Classes:
B63C11/00; B63G8/14; G08C17/00; G08C19/00; G08C19/12; H04B11/00; H04B13/02; H04Q9/00; (IPC1-7): B63C11/00; B63G8/14; H04B11/00; H04B13/02; H04Q9/00
Domestic Patent References:
| JP4931475A | ||||
| JP6218705U |
Attorney, Agent or Firm:
Hachiman Yoshihiro