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JPH02130423

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DESCRIPTION JPH02130423
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
horizontally spread type sensor which is used by being installed in the sea and in which a
plurality of sensors are horizontally spread in the sea to measure the distribution of salt
concentration, temperature etc. in the sea. It is a thing. [Prior Art] A conventional sensor of this
type is shown in FIG. In the figure, 1 is a buoy, and a sensor 2.2. и и и и Record and transmit various
information collected by 2. ???????? ... 2 are connected to the buoy 1 by the cable 3. ?
?????????? The arrangement of 2 is fixed to the frame 4. The reference numeral 5
denotes a float, which supports the frame 4 horizontally via the hanging cords 6. By configuring
as described above, the sensors 2, 2.
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In laying the horizontally deployed sensor of the above configuration, the sensor 2, 2. The cable
3 and the hanging cord 6 have the same length, are connected to the buoy 1 and the float 5
respectively, and are fixed to both ends of the frame 4. The frame 4 and the sensor 2 are
introduced from the sea, the cable 3 and the hanging cord 6 are fed out, and the buoy 1 and the
float 5 are finally inserted into the sea surface to finish laying. [Problems to be Solved by the
Invention] However, in the horizontally deployed type sensor of the above configuration, the
span becomes large when the number of sensors and the span for arranging the sensors
increase, and the installation facility also becomes long. The arrangement was limited in span and
quantity. The present invention has been made in view of the above-mentioned point and
eliminates the problem that the sensor arrangement is limited to the span and the number of
sensors, and submits a horizontally deployed sensor which can be easily laid and realize a large
sensor arrangement. The purpose is to [Means for Solving the Problems] The present invention
for solving the above problems is a horizontal deployment type sensor in which a plurality of
sensors are arranged horizontally in the sea, wherein a weight is suspended from a floating part
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1
via a signal cable. And a plurality of sensors connected from the weight by a second signal cable
and arranged at an arbitrary distance, wherein a float is disposed between the sensors of the
plurality of sensors, the second signal cable and the The total underwater weight of the plurality
of sensors and the total buoyancy of the plurality of floats are substantially equal, and the drogue
is disposed on the opposite side of the weight of the plurality of arrayed sensor groups.
[Operation] By constructing a horizontal deployment type sensor as described above, when
laying this horizontal deployment type sensor in the sea, the buoy is made to flow by wind or
wind current, but the resistance of the drogue in the sea is an array of sensors By acting to hold
back the end of the group, the arrayed sensor group spreads horizontally, making it an ideal
horizontally deployed sensor.
In addition, since the frame for fixing the array is not used, there is no limitation in span and
quantity as in the above-mentioned conventional horizontally deployed sensor. An embodiment
of the present invention will be described below with reference to the drawings. FIG. 1 is a view
showing the configuration of a horizontal deployment type sensor according to the present
invention. In the figure, the parts given the same reference numerals as in FIG. 5 indicate the
same or equivalent parts, 7 is a float, and 9 is a draw. The float 7 is fixed between the sensor 2
and the sensor 2, between the sensor 2 and the weight 8 and between the sensor 2 and the draw
9. The cable 3 is suspended from the buoy 1 to suspend the weight 8 and is further connected to
the sensor 2. Each sensor 2 is connected and fixed at a predetermined position of the cable 3.
Next, the operation of horizontal deployment in the sea of the horizontally deployed sensor of the
above-described configuration will be described in which the drogue 9 is fixed to the end of the
float 7 farthest from the buoy 1. The total buoyancy of each float 7 is approximately equal to the
total underwater weight of the cable 3 and sensor 2 between the weight 8 and the draw 9. In
order to lay a horizontally deployed sensor, first, the buoy 1 is put on the sea and floated. Next,
when the cable 3 is pulled out, the buoy 1 is made to flow by wind or air flow. When the cable 3
is fed out, the weight 8 is turned on, then the sensors 2 and the floats 7 are turned on
successively, and finally the draw 9 is turned on. The sensor 2, the floats 7 and the draw 9 are
pulled into the sea by the weight 8, and the laying is finished. And since there is no influence of
wind current on the vicinity of the depth where the weight 8, sensor 2, each float 7, and draw 9
are, sea water does not flow. Therefore, as shown in FIG. It is made to flow in the direction of
arrow A and tries to pull sensor 2, float 7, and draw 9 through cable 3 and weight 8, but a
resistance force is generated in draw 9 in the direction of arrow B, and draw 9 becomes sensor 2
and float Try to hold back 7. For this reason, a tensile force is generated in the cable 3 between
the weight 8 and the draw 9, and as a result, the cable 3 tries to be in a straight line. Since
buoyancy corresponding to the underwater weight of each sensor 2 and the cable 3 is added by
each float 7, the sensor 2 and the cable 3 between each float 7 and the float 7 have the FIG. As in
the above, each of the sensors 2 which has no slack lower than each float 7 but is stretched by
the tension and becomes substantially linear and aligned as a whole is linearly aligned, and the
horizontal deployment of the horizontally deployed sensor is finished.
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2
Incidentally, the relationship between the underwater weight W and the tensile force T is
approximately shown in FIG. 4, and the span between the sensors 2 and the sensor 2 (doubled! ')
Is 95% of the length (2) l) of the original cable 3 even when [theta] is 18 [deg.], And substantially
straightness is achieved. The tensile force T1 at this time, that is, the drag force generated by the
drogue 9, is 1.6 times the underwater weight W of the cable 3 between one of the sensors 2 and
the float 7, which can be sufficiently realized. The horizontally deployed sensor of the above
configuration is a sensor 2.2. ... To deploy 2 horizontally, a float 7 is disposed between each
sensor 2 and the sensor 2, and only a drogue 9 is connected to the tip of the float. It is only
necessary to put in the equipment, and even the large ones are easy to lay and do not require
equipment for laying. Also, even if the span of the array of sensors 2 and the number of sensors
2 increase, it is sufficient to adjust the number of floats 7 and the interval only, and the large
sensors 2, 2. The arrangement of 2 can be realized. As described above, according to the present
invention, the following excellent effects can be obtained. (1) In order to deploy the sensors
horizontally, a float is placed between the sensors, and only a drogue is connected to the tip of
the float. Since laying only needs to be introduced sequentially from the side of the buoy into the
sea, Even laying is easy and does not require special laying equipment. (2) Even if the span of the
sensor array and the number of sensors increase, it is sufficient to adjust the number of floats
and the interval just enough, and a large sensor array can be realized.
[0002]
Brief description of the drawings
[0003]
FIG. 1 is a view showing the configuration of a horizontal deployment type sensor according to
the present invention, FIG. 2 is an operation explanatory view of horizontal deployment type
horizontal deployment type sensor according to the present invention, and FIG. 3 shows a
deployed state of arranged sensors. FIG. 4 shows the relationship between underwater weight
and tensile force, and FIG. 5 shows the structure of a conventional horizontal deployment sensor.
In the figure, 1 и и и Buoy, 2 и и и Sensor 3 и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и
Float, 8 ... Weight, 9 ... ... Draw.
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