JPS63284418A - Fixed-point holding underwater buoy system - Google Patents

Abstract

PURPOSE:To analyze marine data in detail and to apply a system at a deep water place by holding an underwater buoy at a fixed point right above an underwater laser transmitter at all times. CONSTITUTION:The laser transmitter 4 is installed on the bottom of water so as to emit laser light vertically upward, and a laser receiver 5 is held by a gimbals mechanism so as to face downward vertically thereby receiving the laser light arriving from the bottom of water. When this received laser light becomes weak, a control mechanism 9 for rotating a screw 7 operates a rudder 6 and a motor 8 so as to propel the underwater buoy 1, which is put right below the laser transmitter 4 at all times. In this case, power supply and control are performed from a ground terminal station 11 through a cable 10.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fixed-point underwater buoy system, and more particularly to a fixed-point underwater buoy system in which an underwater buoy moored from the bottom of the water with a rope is used for measurement.

[Conventional technology]

Conventionally, when measuring ocean conditions (temperature distribution, tidal currents, etc.) between two or more points in the ocean using a measuring instrument installed inside the buoy of an underwater buoy system, the buoy itself is affected by tides and ocean currents. Because the buoy moves, the position of this buoy is measured using acoustic methods such as Doppler sonar, and corrections are made to the above data on ocean conditions.

[Problem that the invention seeks to solve]

Conventional underwater buoy systems have the drawback that accuracy is insufficient due to correction of the buoy position during measurement, and accurate data about the item to be measured between the buoys cannot be obtained.

[Means for solving problems]

The fixed point holding underwater buoy system of the present invention includes a laser transmitter that is connected to a land terminal station by a cable on the bottom of the water and transmits a laser beam upward underwater, and a laser transmitter that is installed on the bottom near the laser transmitter. A propulsion screw moored underwater with a rope with one end anchored to a weight, a rudder for controlling the propulsion direction, a laser receiving means for detecting the intensity of the laser light coming from the laser transmitting means, and the laser receiver. at least one control means each comprising control means for controlling rotation of the screw and direction of the rudder in response to a detection result of the means;
It is equipped with two underwater buoys.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a longitudinal sectional view of one embodiment of the present invention.

The underwater buoy 1 is moored to a weight 3 on the bottom of the water by a mooring rope 2. The underwater buoy 1 has a rudder 6 that senses water flow.
It has a screw 7, a motor 8 that drives the screw 7, and a laser receiver 5 that receives laser light emitted from a laser transmitter 4 at the bottom of the water. The laser transmitter 4 is installed on the bottom of the water so as to emit a laser beam in a vertically upward direction.
Further, the laser receiver 5 is held by the gimbal device 1 (not shown) so as to always face vertically downward, and receives laser light coming from the bottom of the water. When the received laser beam weakens, a control mechanism 9 for rotating the screw 7 operates the rudder 6 and the motor 8 so as to propel the underwater buoy 1 in the direction of strengthening the received laser beam, so that the underwater buoy 1 always transmits the laser transmitter 4. It operates so that it is directly above the . The power supply and control are longitudinal cross-sectional views showing an example of application. In the figure, a plurality of underwater buoys, that is, middle buoys 12 and 13 and the uppermost buoy 14 are connected in series, and the core ≠→−I
'-,'-←2 Each intermediate buoy 12.13 has a built-in laser transmitter and laser receiver, and both the laser transmitter and receiver are held by a gimbal mechanism so that they always face vertically up and down. , it is possible to operate and control the intermediate buoys 12, 13 in the same way as in FIG.

〔Effect of the invention〕

By applying the fixed point holding underwater buoy system of the present invention, the underwater buoy can always be held at a fixed point directly above the underwater laser transmitter, making it possible to analyze ocean data in more detail than before. .

Furthermore, by using a system in which multiple underwater buoys are connected in series, it is possible to compensate for the attenuation of laser light in water, making it possible to use it in deep water and to It is effective for tomography and other observations because observation data can be acquired.

[Brief explanation of the drawing]

1 and 2 are longitudinal sectional views of an embodiment of the invention. 1... Underwater buoy, 2... Mooring rope, 3... Weight, 4... Laser transmitter, 5... Laser receiver, 6
... Rudder, 7... Screw, 8... Motor,
9... Control mechanism, 10... Cable, 11... Land terminal station, 12.13... Intermediate buoy, 14... Top buoy. ! ” ,,,, - 2nd page Seri l M 2nd area

Claims (1)

[Claims] A laser transmitter is installed on the bottom of the water connected to a terminal station on land via a cable, and sends out a laser beam above the water. a moored propulsion screw, a rudder for propulsion direction control, a laser receiving means for detecting the intensity of the laser beam coming from the laser transmitting means, and rotation of the screw in response to the detection result of the laser receiving means. and a control means for controlling the direction of the rudder.