Underwater drop control unit null of long shaku flexible underwater installation

摘要

PURPOSE: To eliminate a need for an independent submerged robot without using a diver by a method wherein the lower end position of a submerged installation object is detected, and the submerged installation object is guided to a target underwater object by means of thrust of a thruster and through delivery operation of an operation device. ;CONSTITUTION: A cable 4 is lowered in water by a cable operation device 2. In which case, the sonar receiver of a sensor 12 is caused to receive a signal from a sonar transmitter installed on a water bottom. Position information of the lower end part of the cable 4 is detected from the signal and inputted to a cable control device 1 through an optical fiber 9. A signal is transmitted to a cable operating device 2 by a cable control device 1 to deliver the cable 4, and through drive of a thruster 14, the lower end part of the cable 4 is caused to approach a target underwater object, such as a pit mouth and is connected thereto. Manual operation may be effected as the cable position information display panel of the cable control device 1 is watched.;COPYRIGHT: (C)1995,JPO