JP2009082124A - Fish observation cistern - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To settle the problems that the turbidity causes decrease of the imaging function of a surveillance camera and occurrence of respiratory distress of fishes and thereby image processing misjudges, miss-analysis is caused by deviation of focal distance of fishes when the water intake amount is not equal to the drainage amount, miss-analysis of image processing is caused by generation of diffused reflection when irradiating light from the upper part of a rearing cistern, also a simple filter is requested, and the like. <P>SOLUTION: The fish observation cistern is formed to be attached with a filter unit and a heater on a pump cistern, a connective drainage unit is furnished from the bottom part of the rearing tank to the side surface of a drainage pump cistern, a clear window transmitting the light of a front fluorescent lamp of the rearing cistern is attached, the filter unit is equipped with a filter medium on the bottom part thereof and a withdrawal lid at the upper part, and a hole for raw water intake is bored on a part of the lid. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is a fish monitoring aquarium that monitors the contained toxic substances contained in raw water by the action of fish, keeps the amount of incoming and discharged raw water constant, raises fish in the breeding aquarium for a long time, and takes a bird's-eye view with a surveillance camera Further, the present invention relates to a fish monitoring aquarium that can analyze the behavior change of fish with respect to the contained poison contained in the raw water by performing image processing on the video, and can automatically determine the poison.

Conventionally, raw water taken as drinking water from rivers and lakes contains toxic substances such as organic chlorinated compounds such as PCB (polychlorinated biphenyl), toxic heavy metals such as mercury, cadmium, lead and zinc, dioxins, potassium cyanide and pesticides. There is no guarantee that the situation of mixing will not occur. Therefore, water quality management of raw water is very important, and continuous monitoring for 24 hours is important.
Therefore, the raw water taken is continuously passed through the fish monitoring tank, the fish kept in the breeding tank are constantly photographed with a monitoring camera, and the image processing device is used to check whether the behavior of the fish being monitored is normal or abnormal. An automatic water quality monitoring device using fish that automatically issues an alarm when the device is analyzed and judged to be abnormal is known, and the present invention is provided in the automatic water quality monitoring device 18 using fish. This is a fish monitoring tank.
JP 2003-001809 A Japanese Utility Model Publication No. 2003-000064

However, the conventional fish monitoring tank has the following problems.
(1) When the surface water of the river rains, high turbidity water may enter the fish monitoring tank, and the imaging function of the surveillance camera may deteriorate due to turbidity, or soil fine particles dissolved in the fish cage Attaching caused difficulty in breathing, causing fish to stop moving, and the fish death and image processing were misjudged.
(2) If the incoming water volume and the drainage volume are not always the same, if the water level in the rearing tank becomes abnormally high or decreases abnormally, the imaging focal length of fish will shift and this will interfere with the monitoring camera imaging. Therefore, stable image processing could not be performed, causing erroneous analysis.
(3) The fish monitoring tank is housed in an automatic water quality monitoring device, and when the device door is closed, the image of the monitoring camera requires a minimum subject illuminance. Therefore, lighting such as a fluorescent lamp is required. When lighting such as a fluorescent lamp is irradiated from the upper part of the breeding aquarium, the light is reflected on the water surface and the light is irregularly reflected by the waves on the water surface. It was the cause.
(4) Although a separate dedicated filter was required to treat turbidity water, these were large and expensive, so a simple filter was desired depending on the state and frequency of turbidity. .

In order to achieve the above object, the invention described in claim 1 is characterized in that the water tank is divided into a water receiving tank, a pump water tank, and a breeding water tank, and a filter unit and a heater can be attached to the pump water tank. Further, the invention according to claim 2 is the invention according to claim 1, wherein the drainage from the drainage port F of the rearing tank is drained from the drainage port H on the side surface of the pumping tank, so that the side surface of the drainage pump tank from the bottom of the rearing tank Features a shape with a connected drainage unit attached. The invention described in claim 3 is characterized in that, in the invention described in claim 1, a fluorescent lamp is provided in front of the breeding aquarium, and a transparent window that transmits the light of the fluorescent lamp is mounted on the front of the breeding tank. To do. According to a fourth aspect of the present invention, in the first aspect of the present invention, the filter unit is provided with a filter medium at the bottom, a drawer-type lid is provided at the top, and a hole for injecting raw water into a part of the lid is opened. It is characterized by its shape.

  The fish monitoring aquarium of the present invention balances the amount of incoming water and the amount of water discharged, eliminates erroneous analysis and misjudgment in image processing analysis with an appropriate lighting device, and captures the behavior of fish continuously for 24 hours with a monitoring camera. There is an effect that can be done.

  The fish monitoring aquarium of the present invention maintains the water level of the raw water, adjusts the amount of incoming and discharged water, adjusts the amount of incoming and discharged water, and adjusts the monitoring camera. This was achieved by adjusting the habitat of the fish in the breeding aquarium with lighting, etc., without causing any problems in image processing.

  Embodiments of a fish monitoring tank according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a perspective view showing an embodiment of a fish monitoring water tank according to the present invention. FIG. 2 is a plan view showing an embodiment of a fish monitoring water tank according to the present invention. FIG. 3 is a front view showing an embodiment of a fish monitoring water tank according to the present invention. FIG. 4 is a left side view showing an embodiment of a fish monitoring water tank according to the present invention. FIG. 5 is a right side view showing an embodiment of a fish monitoring water tank according to the present invention. FIG. 6 is a back view showing an embodiment of a fish monitoring water tank according to the present invention. FIG. 8 is a perspective view showing an embodiment of a filter unit according to the present invention. FIG. 9 is an overall view of a water quality automatic monitoring apparatus using fish having the fish monitoring tank of the present invention.

  In FIG. 1, a fish monitoring water tank 1 is divided into a water receiving tank 2, a pump water tank 3, and a breeding water tank 4, and represents a front surface, a right side surface, a left side surface, and a back surface.

  The arrows in FIGS. 1, 2, 3, 4, 5, and 6 indicate the direction in which the raw water flows.

In FIG. 1, the water receiving tank 2 includes a raw water inlet A, an overflow B, and a water supply C.

When the amount of water from the raw water inlet A is larger than that from the water inlet C, the water is drained from the overflow port B. When the amount of incoming water is small, the amount of drainage is reduced and the amount of water in the receiving tank 2 is always constant. It is kept.

The raw water is supplied from the water supply port C through a hole 8 opened in the lid 7 of the filter unit 5.

  In FIGS. 1, 3, 4, 5, and 6, the pump water tank 3 has a space in which the filter unit 5 and the heater 9 can be mounted vertically, and the filter unit 5 is mounted on the top of the heater 9.

  The filter unit 5 and the heater 9 are mounted between the bottom surface of the water receiving tank 2 and the lower surface of the pump water tank 3.

  The filter unit 5 is shaped to be inserted into the bottom surface of the water receiving tank 2, rail rails 5a are attached to both inner surfaces of the pump water tank 3, and the filter unit 5 is mounted by sliding on the rail bar 5a.

  The heater 9 is mounted between the bottom surface of the filter unit 5 and the lower surface of the pump water tank 3.

FIG. 8 is a perspective view of the filter unit 5. The filter unit 5 has a rectangular box shape and is provided with a lid 7 at the top. The lid 7 is an openable and slidable type that slides on the rail 5b. The hole 8 is opened, and raw water is supplied from the water supply port C of the water receiving tank 2 through the hole 8.

The filter unit 6 is laid on the bottom of the filter unit 5, and the bottom of the filter unit 5 has a large number of small holes. The mud and soil dissolved in the raw water will pass the mud and soil dissolved in the raw water when passing through the filter medium 6. Removed with filter medium 6.

  The filter medium 6 is made of cloth, paper, ceramic, sand, etc. The filter medium needs to be cleaned and replaced periodically due to dirt on the filter. Therefore, the filter unit 5 is placed on the left and right sides of the water receiving tank 2. It has a shape that can be easily attached and detached by sliding on the fixed rail bar 5a.

  The heater 9 is mounted in a state lying on the bottom of the pump water tank 3, and is dimensioned so that the filter unit 5 can be mounted on the upper surface. Several heaters 9 can be mounted, and the heater wire 9a is provided from the end of the heater. Yes.

  The heater 9 has a heater power supply wire 9a fixed to one end, and the wire 9a is normally connected to AV100V to generate heat. The heater 9 is equipped with a thermostat, so a constant temperature is maintained and heat is generated. Countermeasures such as fire prevention due to excess are taken.

  When the water temperature falls below 5 ° C., the fish stops hibernating and the image processing is erroneously determined to be dead. Therefore, the heater 9 must be installed when the raw water is river water.

  Usually, a separate type heater is installed. However, depending on the region, and in the case of groundwater or the like, when the water temperature does not decrease so much, a simple heating method has been desired.

  In FIG. 1 and FIG. 2, the raw water supplied to the pump tank 3 is ejected into the breeding water tank 4 by the circulation pump 10.

  The breeding aquarium 4 is manufactured in the shape of a rectangular box with the top open, and the depth is as shallow as 20 centimeters. Therefore, maintenance such as cleaning the aquarium is easy. The transparent plate and the black acrylic plate manufactured in (2) are not preferable because the appearance of fish is reflected by the mirror action and stresses the fish.

  The surveillance camera 17 is photographed from above the breeding aquarium 4. A small fish 11 is bred as a test fish in the breeding aquarium 4. For example, about 20 fish medaka etc. are always poisonous in raw water. It is raised for a long time as a test fish containing.

  The crescent shaped plate 4a is provided at three corners of the square breeding aquarium 4 so that the inside of the aquarium is circular, and the raw water ejected by the circulation pump 10 does not stay at the corner of the square aquarium. The inside of 4 is refluxed in a circle.

  For example, when the poison is contained in the raw water, the fish 11 in the breeding aquarium 4 is naturally invaded by the poison and the swimming ability is weakened, and the fish 11 is caused to flow circularly in the breeding aquarium 4.

  Normally, fish have the habit of swimming toward the water stream, but if they are attacked by a poison, they can no longer swim toward the stream and be washed away by the stream.

  A drain outlet F is opened at the center of the bottom of the breeding aquarium 4. A pole is set up in the opening, a net of nets is connected to the pole, and one is hooked to the inner wall of the breeding aquarium 4. The fish that have been attacked by the poison and flowed into the flow are caught on the catching net 12 of the mesh, and cannot escape from the catching net 12 and swim due to the water pressure of the flow.

  The surveillance camera 17 that captures a bird's-eye view sends a video signal to the image processing device, and the image processing device analyzes the number of swimming fish several times per second, and issues a step-by-step alarm if the number decreases. It has become.

  In the analysis, the total number of fish 11 in the breeding aquarium 4 that is always swimming is determined in advance, and the fish that has been invaded by the poison and can no longer swim toward the flow is caught on the mesh catching net 12 and swims. It is excluded from the total number and only the number of fish swimming is counted.

  The image processing device counts the fish 11 that are swimming, and if there is a decrease as a result, it gives a stepwise alarm according to the number of reductions, for example, when it is counted that all are not swimming, it becomes a serious alarm, The electromagnetic valve is opened so that the raw water in the breeding aquarium 4 is automatically sampled into a container prepared in advance as test water.

The water level of the breeding tank 4 and the pump tank 3 is always kept constant. First, the raw water is received from the water supply port A and supplied to the breeding tank 4 via the pump tank 3 and drained by the supplied amount of water. Thus, the water level is always kept constant, and the fish 11 is always exposed to new raw water to determine the water-containing toxic substances in the raw water. This test method is called a bioassay method. FIG. 3 is an overall view of a water quality automatic monitoring device 18 using fish to which a bioassay method is applied.

3, 4, 5, and 6, when the amount of water supply is greater than the amount of drainage, the amount of water that has overflowed from the two overflow ports of the overflow port B of the water receiving tank 2 and the overflow port E of the breeding water tank 4 is drained. Therefore, the water level is always kept constant. Conversely, when the amount of water supply is small, the amount of drainage is also reduced.

In the conventional construction method, the amount of water was adjusted by adjusting the position of the drain and the overflow through PVC piping. However, there was an error in the level position in piping processing. In the present invention, the drainage from the drain F of the rearing tank In order to drain the water from the drainage port H on the side surface of the pump tank, a connected drainage unit was attached from the bottom of the rearing tank to the side surface of the drainage pump tank.

The drainage from the drainage port F of the rearing tank is drained from the drainage port H at the bottom of the fish monitoring tank 1.

By connecting the connected drainage unit 15 to the bottom of the drainage port F of the breeding water tank 4 and attaching the connected drainage unit 15 to the drainage port H on the rear surface, the level position error that has occurred in the conventional piping processing was solved.

The drain port G is normally closed by a valve 16 provided below the drain port G, and is not opened except during cleaning and maintenance. When the valve 16 is opened, the drain port I raw water is drained.

3, 4, 5, and 6, the water level can be kept constant by providing the drainage port H of the connected drainage unit 15 at a position lower than the overflow port E of the breeding water tank 4. By attaching 15 to the fish monitoring water tank 1, the water level can be maintained more accurately than the PVC pipe of the conventional construction method.

By keeping the water level of the breeding aquarium 4 accurate, the imaging of the monitoring camera 17 and the analysis of the image processing are stabilized without shifting the imaging focal length of the fish 11.

The material of the fish monitoring tank 1 is usually made of milky acrylic board. In FIGS. 1 and 2, a thin rectangular transparent window 13 is fitted in front of the fish monitoring tank 1. The purpose is a fluorescent lamp 14 or the like. This is to ensure a minimum subject illuminance for imaging the fish 11 in the breeding aquarium 4 with the monitoring camera 17.

When illumination such as a fluorescent lamp 14 is irradiated from the upper part of the breeding water tank, light is reflected on the water surface, and the light is swayed and reflected by waves on the water surface.

In the system that performs image processing of the video signal of the surveillance camera, diffused reflection of light causes erroneous analysis. For this reason, a thin rectangular transparent window 13 is fitted in front of the fish surveillance tank 1 to illuminate the fluorescent lamp 14 or the like. The false analysis of the image processing was solved by irradiating into the breeding aquarium 4 from the transmission window 13 of.

The transparent window 13 may be fitted with a transparent acrylic plate in a window obtained by cutting out a milky white acrylic plate in front of the fish monitoring tank 1, or a transparent acrylic plate may be bonded inside the cutout milky white acrylic plate.

  Automatic water quality monitoring device 18 using bioassay fish that performs continuous 24-hour automatic monitoring of toxic substances in raw water such as waterworks, drinking water factories and wastewater using raw water such as surface water, lake water, and groundwater 18 It can be used for fish monitoring tanks.

It is a perspective view which shows embodiment of the fish monitoring water tank concerning this invention. It is a top view which shows embodiment of the fish monitoring water tank concerning this invention. It is a front view which shows embodiment of the fish monitoring water tank concerning this invention. It is a left view which shows embodiment of the fish monitoring water tank concerning this invention. It is a right view which shows embodiment of the fish monitoring water tank concerning this invention. It is a reverse view which shows embodiment of the fish monitoring water tank concerning this invention. It is a perspective view which shows embodiment of the filter unit concerning this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a general view of the water quality automatic monitoring apparatus using the fish which comprises the fish monitoring water tank of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fish monitoring tank 2 Receiving tank 3 Pump tank 4 Breeding tank 4a Crescent-shaped board 5 Filter unit 5a Rail bar 5b Rail 6 Filter medium 7 Lid 8 Hole 9 Heater 10 Circulation pump 11 Fish 12 Capture net 13 Transparent window 14 Fluorescent lamp 15 Connection drainage Unit 16 Valve 17 Monitoring camera 18 Automatic water quality monitoring device using fish A Water supply port B Overflow port C Water supply port D Water supply port E Overflow port F Drain port G Drain port H Drain port I Drain port

Claims (4)

  The fish tank is divided into a water tank, a pump tank and a breeding tank, and the pump tank is equipped with a filter unit and a heater.   A fish characterized in that a connected drainage unit is attached from the bottom of the breeding tank to the side of the drainage pump tank in order to drain the drainage from the drainage port F of the breeding tank according to claim 1 from the drainage outlet H on the side of the pump tank. Monitoring tank.   A fish monitoring aquarium having a shape in which a fluorescent lamp is provided in front of the breeding aquarium according to claim 1 and a transparent window that transmits light from the fluorescent lamp is mounted on the front of the breeding aquarium.   2. The fish monitoring water tank according to claim 1, wherein the filter unit has a shape in which a filter medium is laid at the bottom, a drawer-type lid is provided at the top, and a hole for receiving raw water is opened at a part of the lid.