JPH10338189A - Mooring status monitoring device for underwater mooring system - Google Patents

Abstract

(57) [Summary] [Problem] To enable the collection of data for estimating the cause of an accident even if a trouble occurs. SOLUTION: An upper part for separating from a mooring line inside.
Float incorporating a lower disconnect mechanism, an electronic control unit, and a condition monitoring sensor, with no external parts that are trapped, and with a transmitting antenna and an upper / lower disconnect handset that responds to an acoustic signal for disconnection around the float The electronic control unit captures measurement data from a state monitoring sensor and time measurement data from a built-in time measurement unit, and controls the upper / lower separation mechanism based on the acquired data. Activate,
The power supply of the transmitting antenna is turned on.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ocean observation buoy, and more particularly, to an underwater marine buoy having a function of monitoring the condition of an operating marine buoy in a real sea area and having a function of enabling rescue when a trouble occurs. The present invention relates to a mooring status monitoring device for an observation mooring system.

[0002]

2. Description of the Related Art Mooring systems for observing the underwater environment include, for example,
As shown in FIG. 7, the beacon flasher 1, the top float 2, the observation sensors 3, 4, the intermediate floats 5, 6, the underwater separating device 7, the lower separating device 8, and the anchor 9 are used. 100 ~
Floating at a depth of 200m. Generally, a mooring system installed underwater activates the lower separating device 8 of the underwater separating device 7 after the observation period, and is collected by the ship. Therefore, the function of the conventional underwater separation device is
In response to the sound signal from the ship, a function to send an acoustic response signal to inform you of your presence in the water, and to identify several kinds of sound signals, actuate the instrument to separate the anchor in response to only the separation signal In general, it has a function to make it work.

[0003]

A mooring system for observing the underwater environment is installed in a certain sea area for observation in units of several days to several months. During the observation period, there is a possibility that various obstacles may occur, and there are cases where the mooring system cannot be recovered due to the obstacles. Such an example will be described with reference to FIGS. 8 to 10, illustration of the beacon flasher is omitted.

[0004] Fig. 8 is an explanatory view in the case where the mooring system is cut by a bottom seine net or the like. If the mooring system is disconnected between the anchoring device 9 and the mooring system separating device 7 by means of a bottom seine (cutting point P), the mooring system drifts to somewhere, becomes unknown, and is separated from the ship 10 for recovery. There is no response from sending an acoustic signal to activate the device, and the mooring system is unrecoverable.

FIG. 9 is an explanatory diagram when the mooring system moves due to a rapid flow or the like. If the entire mooring system moves and becomes lost due to a rapid current or the like, there is no response even if an acoustic signal for operating the disconnection device is sent from the ship for recovery, and similarly recovery becomes impossible.

FIG. 10 is an explanatory diagram when the top float is cut. If the top float is cut by longline fishing or the like (cutting point Q), or if the buoyancy is insufficient due to a design error or breakage of the float, the mooring system does not move but hangs down, and the separating device 7 is operated for recovery. Even if it does, the sensor and the separation device cannot float and cannot be collected due to insufficient buoyancy.

[0007] As described above, when nothing can be recovered from the installed mooring system, it is impossible to estimate what trouble has occurred and when. Therefore, there is no clue to take any measures to increase the recovery rate of the mooring system in the future.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a mooring status monitoring apparatus for an underwater observation mooring system capable of collecting data for estimating the cause of an accident even if a trouble occurs. And

[0009]

In order to achieve the above object, according to a first aspect of the present invention, there is provided an underwater observation mooring system in which a lower end of a mooring line to which a float or an observation sensor is connected is fixed to an anchor. An upper / lower separating mechanism, an electronic control unit, and a condition monitoring sensor for separating the upper and lower parts are incorporated, and the outer shape is formed so that there is no portion where the outer shape is caught. A mooring condition monitoring device that forms a float with a receiver attached thereto, wherein the electronic control unit captures measurement data from a state monitoring sensor and time measurement data from a built-in time measurement unit, and based on the captured data, It is characterized in that the upper / lower separating mechanism is operated and the power of the transmitting antenna is turned on. The invention according to claim 2 is characterized in that the float has a spheroidal shape and can be divided into two in the vertical direction, and is fastened by a circular band also serving as the transmitting antenna. Also,
According to a third aspect of the present invention, the condition monitoring sensor is a water pressure gauge, and the electronic control unit activates the lower disconnection mechanism when a set period has elapsed, and the water pressure gauge reaches the sea level within a predetermined time. The power of the transmitting antenna is turned on on condition that the rescue signal is transmitted. Also, in the invention according to claim 4, the condition monitoring sensor is a water pressure gauge, and the electronic control unit activates the lower disconnection mechanism when a set period has elapsed, and the water pressure gauge is operated by the sea level water pressure within a predetermined time. Under the condition that the water pressure does not become lower, the power supply of the transmitting antenna is turned on to transmit a rescue signal on condition that the water pressure gauge has reached sea level water pressure after the upper separating mechanism is operated.

[0010]

Embodiments of the present invention will be described below. FIG. 1 is a diagram showing a submarine observation mooring system according to the present invention;
FIG. 2 is a diagram illustrating a mooring situation monitoring device according to the present invention.
The mooring system shown in FIG. 1 is different from the conventional mooring system shown in FIG. 7 in that a mooring status monitoring device 20 is used instead of the underwater separating device 7, and other configurations are the same. . The mooring status monitoring device 20 is capable of separating the upper and lower portions in both directions, and has a function of monitoring the status of the mooring system itself and recovering even if a trouble occurs, as described later. Have.

FIG. 2 is a diagram for explaining a mooring status monitoring device.
FIG. 2A is a top view, and FIGS. 2B and 2C are side views. In the mooring system where the accident occurred, the ropes were entangled or heavy equipment fell to the sea floor,
The float may be in the form of an arch with a raised rope. It is desirable that the mooring condition monitoring device 20 forms a float having an outer shape without any portion to be caught so that the mooring condition monitoring device 20 can escape from such a situation. Therefore, for example, a rugby ball-shaped spheroid as shown in the figure, and the outline of the ellipsoid may be formed by syntactic foam float, the center of which is hollowed out into a cylindrical shape, and the upper part is formed. An upper separating mechanism 21 is incorporated in a lower part, a lower separating mechanism 22 is incorporated in a lower part, and an electronic control unit 23 is incorporated in a central part. Electronic control unit 2
Reference numeral 3 has a data processing function such as a personal computer, fetches measurement data of a state monitoring sensor such as a water pressure gauge and a cable tension meter incorporated therein, and controls a separation mechanism and the like according to conditions.

The float of the spheroid can be divided in half in the vertical direction, so that the electronic control unit can be easily accommodated in the center part. The antenna is also fastened by a circular band (constraint band and satellite transmitting antenna) 26 which also has a role of an antenna for transmitting to the antenna. The mooring state monitoring device 20 is not limited to the spheroidal shape, but may be another shape, for example, a spherical shape.

On the left and right sides of the float of the spheroid,
Upper disconnect handset 24, Lower disconnect handset 25
Is provided to transmit a response signal indicating a position in response to an acoustic signal from the ship, and to operate the upper separating mechanism 21 and the lower separating mechanism 22.

Next, the function of the mooring status monitoring device 20 will be described with reference to FIG. As described above, the cord tension meter 30 and the water pressure gauge 31 are incorporated in the mooring status monitoring device 20 as status monitoring sensors, and the measurement results are transmitted to the electronic control unit 2.
3 and stored in the storage device 33. The cable tension meter 30 is for continuously monitoring the cable tension applied to the mooring cable. The rope tension is, in other words, buoyancy. From this data, it is possible to capture a change in tension caused by some trouble, and it is possible to infer when and what force was applied. For example, when the tension suddenly decreases or increases, it is presumed that some abnormal situation has occurred.

The water pressure gauge 31 continuously monitors the position where the mooring condition monitoring device 20 is hung in the mooring system by water pressure. Assuming that the anchor is fixed to the sea floor,
It is also possible to calculate the inclination of the mooring system from changes in water pressure. Also, the state of the mooring system can be grasped based on the water pressure data.

The electronic control unit 23 takes in the data from the cable tension meter 30, the water pressure gauge 31, and the time measurement data from the built-in timer 32, and when the predetermined conditions are satisfied, the upper separating mechanism 21 and the lower separating mechanism 22. It can be actuated to stand alone from the mooring system, and since it has a function as a float, it floats on its own to
Is turned on to transmit a rescue signal. The mooring situation monitoring device 20 that has surfaced drifts until it is discovered, but the electronic control unit 23 operates the water pressure gauge 3
When it is determined that the mooring condition monitoring device 20 has surfaced on the sea surface based on the water pressure detected in step 1, the antenna 26 is turned on.
Since the transmitted radio wave is captured by the artificial satellite, the drifting position of the mooring status monitoring device 20 can be known and collected.

The electronic control unit 23 has a built-in timer, compares it with the mooring schedule set by the user, determines what kind of situation the mooring system itself is currently in, and disconnects it. Activate the mechanism.

For example, when the mooring period set by the user is one year, if 13 months have passed since the installation, it is determined that an abnormal situation has occurred, and the lower separating mechanism 22 is operated. To ascend. At this time, the upper separating mechanism 21 is operated in consideration of the data of the water pressure gauge. That is, after the lower separation mechanism 22 is operated, the water pressure is detected, and if the water pressure does not become zero indicating the sea level within a predetermined time, the upper separation mechanism 21 is operated to achieve a single floating. After operating the lower separating mechanism 22, the water pressure is detected, and if the water pressure becomes zero indicating the sea level within a predetermined time, the upper separating mechanism 21 is not operated.

In the above description, the sound signal from the ship is separated into an upper cut-off handset 24 and a lower cut-off handset 2
When 5 reacts, this signal causes the upper disconnecting mechanism 21 and the lower disconnecting mechanism 22 to operate.

Further, the data measured by the cable tension meter or the water pressure gauge is acquired for about one to two years. Is not possible due to limitations. Therefore,
It is desirable that the data is monitored at every time set by the user, and only the value exceeding a predetermined level indicating an abnormality is acquired for a period set by the user.

Next, recovery of the mooring system when a trouble occurs will be described with reference to FIGS. FIG. 4 shows a mooring system 2 according to the present invention.
This is the case where the mooring line is cut between the anchor 0 and the anchor 9 (cutting point P). The mooring system separated from the anchor floats and drifts, but the water pressure gauge 31 of the mooring status monitoring device 20
When the detected water pressure becomes zero indicating the sea level, the power of the antenna 26 is turned on by the electronic control unit 23, and by receiving the transmitted radio wave, the drift position can be known and collected.

FIG. 5 shows a case where the mooring system of the present invention moves due to a rapid current or the like and does not respond to an acoustic signal from the ship. When a preset time period has passed by a timer built in the electronic control unit, it is determined that an abnormal situation has occurred, and the lower separation mechanism is activated to lift the mooring system. The mooring system separated from the anchor floats and drifts, but when the water pressure detected by the water pressure gauge 31 of the mooring condition monitoring device 20 becomes zero indicating the sea level,
The power of the antenna 26 is turned on by the electronic control unit 23, and by receiving the transmitted radio wave, the drift position can be known and collected. In this case, if the water pressure does not indicate zero within a predetermined time, the upper separation mechanism is operated to attempt to ascend by the mooring status monitoring device 20 alone, and the water pressure detected by the water pressure gauge 31 of the mooring status monitoring device 20 is reduced. When the sea level reaches zero, the power of the antenna 26 is turned on by the electronic control unit 23.

FIG. 6 shows a case where the buoyancy is insufficient due to the float. For example, if the top float is cut, or if the buoyancy is insufficient due to a design error or breakage of the float,
The mooring system hangs down. Such a situation can be judged by the tension data detected by the cable tension meter,
Alternatively, even if the lower separation mechanism is operated from above the boat after a set period of time, it does not float due to insufficient buoyancy. In this case, the upper separating mechanism 21 is operated, and the mooring state monitoring device 20 is floated alone. When the water pressure gauge detects that it has surfaced on the sea surface, the electronic control unit 23 controls the antenna 2
By turning on the power of No. 6 and receiving the transmitted radio wave, the drift position can be known and collected.

[0024]

As described above, according to the present invention, the mooring status monitoring device can be recovered even when an accident occurs in the marine observation mooring system, so that the cause can be determined based on the acquired data. It is possible to know the cause of the accident more reliably. Further, knowing the exact cause of the accident can reduce the incidence of accidents by improving the problems of the mooring system. In addition, even if the mooring system is recovered safely, if any abnormal value is included in the hanging sensor, the data acquired by the mooring status monitoring device provides clues to know the basis of the abnormal value. Become.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a mooring system according to the present invention.

FIG. 2 is a diagram illustrating a configuration of a mooring status monitoring device.

FIG. 3 is a block diagram illustrating functions of a mooring status monitoring device.

FIG. 4 is an explanatory diagram in a case where a mooring line is cut between a mooring status monitoring device and an anchor due to a rapid flow or the like in the mooring system of the present invention.

FIG. 5 is an explanatory view of a case where the mooring system moves due to a rapid flow or the like in the mooring system of the present invention.

FIG. 6 is an explanatory view in the case of insufficient buoyancy due to a float in the mooring system of the present invention.

FIG. 7 is a diagram illustrating a conventional mooring system for observing an underwater environment.

FIG. 8 is an explanatory diagram when the mooring system is cut by a bottom seine net or the like.

FIG. 9 is an explanatory diagram when the mooring system moves due to a rapid flow or the like.

FIG. 10 is an explanatory diagram when a top float is cut.

[Explanation of symbols]

2, top float, 3, 4 observation sensor, 5, 6 intermediate float, 9 anchor, 20 mooring status monitoring device,
21: upper separating mechanism, 22: lower separating mechanism, 2
3 ... Electronic control unit, 24 ... Top disconnecting handset, 25 ...
Lower detached handset, 26: restraint band and satellite transmission antenna, 30: cable tension meter, 31: water pressure gauge, 32: timer.

Claims (4)

[Claims] 1. An underwater observation mooring system in which a lower end of a mooring line to which a float or an observation sensor is connected is fixed to an anchor, an upper / lower separating mechanism for internally disconnecting the mooring line, an electronic control unit, and a state. A mooring condition monitoring device that incorporates a monitoring sensor and has a shape having no portion where the outer shape is trapped, and a mooring status monitoring device that forms a float around which a transmitting antenna and an upper / lower disconnecting handset that responds to an acoustic signal for disconnection are attached; The electronic control unit captures measurement data from a state monitoring sensor and timing data from a built-in timing unit, activates the upper / lower separation mechanism based on the captured data, and turns on a power of a transmission antenna. A mooring situation monitoring device for an underwater observation mooring system. 2. The underwater apparatus according to claim 1, wherein the float has a spheroidal shape and can be divided in half in a vertical direction, and is fastened by a circular band also serving as the transmitting antenna. Mooring status monitoring device for observation mooring system. 3. The apparatus according to claim 1, wherein the condition monitoring sensor is a water pressure gauge, and the electronic control unit activates a lower disconnection mechanism when a set period has elapsed, and the water pressure is measured within a predetermined time. A mooring state monitoring device for an underwater observation mooring system, characterized in that a power of the transmitting antenna is turned on and a rescue signal is transmitted on condition that the gauge has reached sea level. 4. The apparatus according to claim 1, wherein the condition monitoring sensor is a water pressure gauge, and the electronic control unit activates a lower disconnection mechanism when a set time period has elapsed, and the water pressure gauge is operated within a predetermined time. Under the condition that the gauge does not reach sea level, further operating the upper separating mechanism, and then turning on the power of the transmitting antenna to transmit a rescue signal under the condition that the water level gauge has reached sea level. Mooring status monitoring device for underwater observation mooring system.