JP2016129514A - Aquaculture water tank water quality monitoring device and aquaculture system using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure that water quality in an aquaculture water tank can be grasped at low cost.SOLUTION: An aquaculture water tank water quality monitoring device includes: a moving body 20 that can move in an aquaculture water tank 10; a plurality of water quality sensors 30 that are arranged in the moving body 20 and measure a state of water; transmission means (a transmission antenna 40) that transmits measured values of the water quality sensors 30; measurement means (a moving body position detection camera 50 and a hydrophone 52) that measures a position of the moving body 20 in the aquaculture water tank 10; and means (a data recording device 60) that determines a water quality measurement position in the aquaculture water tank 10 from the position of the moving body 20 and positions of the water quality sensors 30 included in the moving body 20.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an aquaculture water tank monitoring device and an aquaculture system using the same, and more particularly to an aquaculture water quality monitoring device and an aquaculture system using the same that are suitable for use in an onshore aquaculture tank that is a closed space. About.

  In aquaculture, it is very important to manage water quality such as water temperature, dissolved oxygen content, pH, etc., and methods for monitoring and controlling water quality with sensors have been proposed (Patent Documents 1 and 2). Furthermore, a method for performing water quality management of a plurality of water tanks has also been proposed (Patent Document 3).

  In the aquaculture tank, there is a possibility that local water quality may deteriorate due to the influence of the position of the water supply / drainage pipe, the supply position of the feed, the residue of the feed, and the like. Even local deterioration in water quality can cause stress in seafood. One way to avoid this is to monitor the water quality more closely.

  On the other hand, Patent Document 4 discloses a spherical underwater buoy with a built-in water quality measuring unit for measuring the water quality of the surrounding water mass as a device for measuring water quality while moving in water in the ocean rather than in a water tank and transmitting the measurement result. Patent Document 5 describes a cylindrical floating body provided with an underwater component measuring device having a weight measurement terminal that can be moved up and down by an underwater lifting device and a measurement data collecting unit. Describes a rectangular parallelepiped-shaped water quality measuring device mounted on an underwater moving body which is a fish-shaped robot, for example, which can freely swim in water.

JP 58-9630 A JP 58-9631 A JP-A-3-108664 JP 59-170766 JP-A-2005-300393 JP 2012-132903 A

  However, in the methods of Patent Documents 1 and 2, it is necessary to increase the number of sensors, which increases equipment costs. Moreover, although the method of patent document 3 does not need to increase the number of sensors, since the movement apparatus for moving a water quality monitoring robot is needed, also in this case, installation cost will become large.

  On the other hand, the devices described in Patent Documents 4 to 6 are not suitable for use in water quality measurement of each part of a land-based aquaculture tank that is a closed space.

  The present invention has been made to solve the above-mentioned conventional problems, and is capable of grasping the water quality in the aquaculture tank at a low cost, and uses a water quality monitoring apparatus suitable for a land-based aquaculture tank that is a closed space and the same. The objective is to provide an aquaculture system.

  The present invention includes a movable body that is movable in the aquaculture tank, a plurality of water quality sensors that are disposed in the movable body and that measure the state of water, and a transmission means that transmits measurement values of the water quality sensor, Measuring means for measuring the position of the moving body in the aquaculture tank, and means for determining the water quality measurement position in the aquaculture tank from the position of the moving body and the position of the water quality sensor provided in the moving body. By providing, the above-mentioned problems are solved.

  Here, the said mobile body can be made to move with the water flow in the said aquaculture tank.

  Furthermore, the position control means for controlling the movement position by the water flow of the said mobile body can be provided.

  In addition, the position control means comprises a pole disposed in the center of the aquaculture tank, and the pole and the moving body, and is wound around the pole by a water flow, for example, a rope or a cable. Can be provided.

  In addition, a lock mechanism for controlling the fixed state of the pole and the cord-like body can be provided at a portion where the cord-like body is attached to the pole.

  Alternatively, the position control means connects a pole disposed in the center of the aquaculture tank, a rotation mechanism provided on the pole, the rotation mechanism and the moving body, and winds up by the rotation mechanism. A cord that is unwound can be provided.

  Moreover, the said mobile body can have a drive means for moving in the said aquaculture tank.

  The water quality sensor can be attached to a rigid body provided on the moving body.

  The water quality sensor can be provided from near the water surface to near the bottom of the aquaculture tank.

  Moreover, the said measurement means can be used as the camera which can image | photograph the position of the said mobile body in the said aquaculture tank.

  Alternatively, the measuring means can be a position sensor that captures signals such as light, radio waves, and sound waves emitted from the moving body.

  The present invention also provides an aquaculture system using an aquaculture tank water quality monitoring apparatus, wherein one or a plurality of the aquaculture tank water quality monitoring apparatuses are used.

  ADVANTAGE OF THE INVENTION According to this invention, the water quality monitoring apparatus suitable for the land culture water tank which is a closed space which can grasp | ascertain the water quality in a culture water tank at low cost, and a culture system using the same can be provided.

The perspective view including the partial block diagram and front view which show the structure of 1st Embodiment of this invention. The front view which shows the principal part structure of 2nd Embodiment of this invention. The front view which shows the principal part structure of 3rd Embodiment of this invention. The front view which shows the principal part structure of 4th Embodiment of this invention. The front view which shows the principal part structure of 5th Embodiment of this invention. The perspective view which shows the principal part structure of 6th Embodiment of this invention. The perspective view which shows the principal part structure of 7th Embodiment of this invention. The top view which shows the point which should improve the 1st, 3rd, 6th, 7th embodiment The perspective view including the partial block diagram and front view which show the structure of 8th Embodiment of this invention. The top view which shows the effect | action of 8th Embodiment The perspective view which shows the principal part structure of 9th Embodiment of this invention. The top view which shows the effect | action of 9th Embodiment (A) Top view and (B) Front view showing a lock mechanism used in the ninth embodiment The perspective view which shows the principal part structure of 10th Embodiment of this invention. The top view which shows the effect | action of 10th Embodiment The (A) top view and (B) front view which show the rotation mechanism used in 10th Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by the content described in the following embodiment and an Example. In addition, the constituent elements in the embodiments and examples described below include those that can be easily assumed by those skilled in the art, those that are substantially the same, and those in the so-called equivalent range. Furthermore, the constituent elements disclosed in the embodiments and examples described below may be appropriately combined or may be appropriately selected and used.

  In the first embodiment of the present invention, as shown in FIG. 1, a floating-type moving body 20 that can move in an aquaculture tank (hereinafter also simply referred to as an aquarium) 10 for culturing fish 8, and the moving body 20 A plurality of water quality sensors 30 for measuring the state of water in the aquarium 10, a transmission antenna 40 for transmitting measured values of the plurality of water quality sensors 30 in a wireless manner, and the moving body Measurement data reception provided with a moving body position detection camera 50 for measuring the position of 20 in the water tank 10 and a reception antenna 42 for receiving measurement data (water quality data) transmitted from the transmission antenna 40. Position data (referred to as moving body position data) of the moving body 20 detected by the apparatus 44 and the moving body position detecting camera 50 and the position (sensor) of the water quality sensor 30 provided in the moving body 20 Determined water quality measurement position in the water tank 10 from the called location), and a data recording device 60 for recording in correspondence with the measurement data input from the measurement data receiving apparatus 44.

  The water quality sensor 30 includes, for example, a water depth meter, a water temperature meter, a pH meter, a salinity concentration meter, and the like that use a battery as a power source. For example, a rigid rod 22 that extends downward from the moving body 20 is provided near the water surface 12. It is attached by changing the position in the depth direction over the water tank bottom 14. The water depth position of each water quality sensor 30, that is, the distance from the moving body 20 is grasped in advance.

  The plurality of water quality sensors 30 are not limited to different objects, and a plurality of water quality sensors 30 may be attached by changing the height of the same object to obtain a distribution in the water depth direction.

  The operation will be described below.

  When the moving body 20 to which the water quality sensor 30 for measuring the state of water is attached is floated in the water tank 10, the moving body 20 is moved by the water flow in the water tank 10. The position of the moving body 20 is photographed by the moving body position detecting camera 50 to measure the planar position of the moving body 20, and the water quality measurement data at each position of the moving body 20 is transmitted wirelessly, and the data recording device 60 Thus, it is recorded as a combination of the plane position of the moving body 20 in the water tank 10 and the water quality data. Since the water quality sensor 30 is fixed at a certain distance (water depth) from the moving body 20, the position in the water depth direction can be obtained from this distance. By moving the moving body 20 in the water tank 10 and repeating the above measurement and data recording, it is possible to grasp the entire water quality in the water tank 10 with a small number of water quality sensors 30.

  Therefore, for example, it is possible to grasp the state by mapping water quality data with a three-dimensional diagram or the like.

  The transmission antenna 40 may be built in the moving body 20.

  The moving body position detecting camera 50 can be increased in position detection accuracy by using a plurality of moving body position detecting cameras 50 instead of one.

  The power source of the mobile body 20 and the water quality sensor 30 can be a battery or wireless power feeding.

  It is desirable that the water quality sensor 30 be directly attached to the rod 22-like rigid body so that the positional relationship between the moving body 20 and the water quality sensor 30 does not change, but depending on the situation, as in the second embodiment shown in FIG. In addition, a wire rope 23 or a cable can be used in combination with, for example, the weight 24 instead of the rod.

  The moving body 20 of the above embodiment is an example of a floating body system such as a fishing float that floats on the water surface 12, but is a submersible system that dives into the water as in the third embodiment shown in FIG. Also good.

  Or the water tank bottom movement system which moves the bottom 14 of the water tank 10 with the wheel 26 may be sufficient like 4th Embodiment shown in FIG.

  Also in this case, as in the fifth embodiment shown in FIG. 5, the wire rope 23, the cable, etc., and the float 28 can be used in combination. In this case or when the weight 24 is omitted in the second embodiment, the position information can be wirelessly transmitted from each water quality sensor 30 in order to improve the position detection accuracy of the water quality sensor 30.

  Further, the moving body 20 may be provided with driving means including a motor and a screw to enable movement independent of water flow.

  In addition to providing the driving means, for example, a fin-like rectifying plate is provided on the inner surface of the outer wall of the aquarium, and the water tank 10 is deliberately created to control the movement of the moving body 20 by intentionally creating a water flow inward. You can also.

  Further, the position detection of the moving body 20 is not limited to that by the camera 50, and a sound wave or an ultrasonic wave is transmitted from the moving body 20 as in the sixth embodiment shown in FIG. A method of obtaining the position in the water tank 10 by detecting it may be used.

  The communication method is not limited to wireless communication, and a center pole 16 may be provided in the water tank 10 and the center pole 16 and the moving body 20 may be connected by a cable 18 as in the seventh embodiment shown in FIG. . In this case, a wireless antenna is not necessary, and the power of the water quality sensor 30 can also be supplied via the cable 18.

  In addition, in the method of moving the moving body 20 naturally with a water flow as in the first to third, sixth, and seventh embodiments, when the water flow is constant, as illustrated in the case of a circular aquarium in FIG. The movement trajectory of 20 is almost constant, and the moving body 20 passes through only a substantially constant position in the water tank 10, and in the case of FIG. 8, since the moving body 20 does not pass through the center, the measurement position of water quality is biased. Therefore, there is a concern that a problem that a spot where local water quality deteriorates cannot be found is caused. Further, in order to control the position of the moving body 20, it is conceivable to intentionally change the direction and amount of the water flow. However, the change in the water flow causes a biological stress in the aquarium 10, and there is a concern that it adversely affects these. There is.

  Therefore, in the eighth embodiment of the present invention, as shown in FIG. 9, one end such as a wire rope 70 or a cable is attached to the moving body 20 attached with the water quality sensor 30 that moves in a water flow, and the other end is located at the center of the water tank 10. Fix to the center pole 16. At this time, if the fixing method is such that the wire rope 70 is wound around the center pole 16 as the moving body 20 moves, the moving body 20 moves in the circumferential direction by the water flow. Wrap around the center pole 16. As the wire rope 70 is wound, the moving body 20 approaches the center pole 16, and as a result, the moving body 20 draws a spiral locus as shown in FIG. Therefore, the water quality sensor 30 attached to the moving body 20 can measure the water quality in the water tank 10 without deviation.

  In the eighth embodiment, when the moving body 20 reaches the position of the center pole 16, it is necessary to remove the wire rope 70 from the center pole 16 again. Therefore, in the ninth embodiment of the present invention, as shown in FIG. 11, a lock mechanism 80 is provided at a portion for fixing the wire rope 70 or the cable of the center pole 16, so that the movable body 20 is close to the center pole 16. When the wire rope 70 is wound, the lock can be released. That is, when the lock mechanism 80 is locked, as shown in FIG. 12A, the wire rope 70 is wound up, so that the moving body 20 approaches the center pole 16 at the center. As shown in FIG. 12B, when the lock mechanism 80 is released when the moving body 20 approaches the center pole 16, the moving body 20 moves away from the center pole 16 by centrifugal force as shown in FIG. Go. By repeating this, it is possible to prevent the measurement positions from being biased.

  For example, as shown in FIGS. 13A (plan view) and (B) (front view), the lock mechanism 80 includes a ratchet gear 82 fixed to a wire rope take-up pulley 72, and the ratchet gear 82. It can be configured using a ratchet mechanism that includes an engaging pawl 86 that is engaged with the rack 84 and is pivotally fixed. The specific configuration of the lock mechanism 80 is not limited to this.

  Alternatively, as in the tenth embodiment shown in FIG. 14, a rotation mechanism 90 using a motor or the like is provided on the center pole 16, the rotation mechanism 90 and the moving body 20 are connected by a wire rope 70, and the wire rope 70 is connected by the rotation mechanism 90. It is also possible to use a method of winding and rewinding. At the time of winding, as shown in FIG. 15A, the moving body 20 moves in a direction approaching the center pole 16, and when the moving body 20 approaches the center pole 16 as shown in FIG. If the rotation is reversed, rewinding is performed, so that the moving body 20 moves away from the center pole 16 by centrifugal force as shown in FIG. By repeating this, it is possible to prevent the measurement positions from being biased.

  For example, as shown in FIGS. 16A (plan view) and (B) (front view), the rotation mechanism 90 includes a gear 92 fixed to a wire rope take-up pulley 72 and a gear 94 meshing with the gear 92. And a motor 96 for driving the gear 94 to rotate. The specific configuration of the rotation mechanism 90 is not limited to this.

  In any of the above-described embodiments, the present invention has been applied to an aquaculture tank on land. However, the application target of the present invention is not limited to this, for example, on the sea surrounded by a net or the like to be a closed space. The same applies to aquaculture tanks. The aquaculture target is not limited to fish, and may be shellfish such as oysters and scallops. The wire ropes 23 and 70 may also be other cords such as ropes and cables other than the wire ropes.

DESCRIPTION OF SYMBOLS 8 ... Fish 10 ... Aquaculture tank 16 ... Center pole 18 ... Cable 20 ... Moving body 22 ... Rod 23, 70 ... Wire rope 24 ... Weight 26 ... Wheel 28 ... Floating 30 ... Water quality sensor 40 ... Transmitting antenna 42 ... Receiving antenna 44 ... Measurement data receiving device 50 ... Moving body position detection camera 52 ... Underwater microphone 60 ... Data recording device 80 ... Locking mechanism 90 ... Rotating mechanism 96 ... Motor

Claims (12)

A movable body movable in the aquaculture tank;
A plurality of water quality sensors arranged on the mobile body for measuring the state of water;
Transmitting means for transmitting the measured value of the water quality sensor;
Measuring means for measuring the position of the mobile body in the aquaculture tank;
Means for obtaining a water quality measurement position in the aquaculture tank from the position of the mobile body and the position of the water quality sensor provided in the mobile body;
A water quality monitoring device for an aquaculture tank, comprising:   The water quality monitoring device for an aquaculture tank according to claim 1, wherein the mobile body is moved by a water flow in the aquaculture tank.   The water quality monitoring device for an aquaculture tank according to claim 2, further comprising position control means for controlling a moving position of the moving body by a water flow.   The position control means includes a pole disposed in a central portion of the aquaculture tank, and a cord-like body that connects the pole and the moving body and is wound around the pole by a water flow. The water quality monitoring device for an aquaculture tank according to claim 3.   The water quality monitoring device for an aquaculture tank according to claim 4, wherein a lock mechanism for controlling a fixed state of the pole and the cord-like body is provided at a portion of the cord-like body attached to the pole. .   The position control means is connected to the pole disposed in the center of the aquaculture tank, a rotation mechanism provided on the pole, the rotation mechanism and the moving body, and wound and / or wound by the rotation mechanism. The water quality monitoring device for an aquaculture tank according to claim 3, further comprising a cord-like body to be rewound.   The water quality monitoring device for an aquaculture tank according to claim 1, wherein the moving body has a driving means for moving within the aquaculture tank.   The water quality monitoring device for an aquaculture tank according to any one of claims 1 to 7, wherein the water quality sensor is attached to a rigid body provided on the movable body.   The water quality monitoring device for an aquaculture tank according to any one of claims 1 to 8, wherein the water quality sensor is provided from near the water surface to near the bottom of the aquaculture tank.   The culture quality monitoring apparatus for aquaculture tank according to any one of claims 1 to 9, wherein the measuring means is a camera capable of photographing the position of the moving body in the aquaculture tank.   The water quality monitoring device for an aquaculture tank according to any one of claims 1 to 9, wherein the measuring means is a position sensor that captures a signal emitted from the moving body.   An aquaculture system using an aquaculture tank water quality monitoring device, wherein one or more of the aquaculture tank water quality monitoring devices according to any one of claims 1 to 11 are used.

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