CN206324008U - A kind of device for monitoring zoobenthos under water - Google Patents

Abstract

The utility model relates to a device for monitoring underwater benthic animals, which includes a support frame, a cross bar and a detection device; the support frame is in the shape of a straight rod, the upper end of which is equipped with a control box, and the lower end can be inserted and fixed at the bottom of the water body; The end of the crossbar is connected with the first motor installed in the control box, and can move around the support frame in a circle driven by the first motor; the detection device goes around the crossbar through the lifting rope The front end of the front end is connected to the second motor in the control box, so that it can move up and down under the drive of the second motor; the detection device includes a hemispherical transparent casing, and a camera and an auxiliary light source are arranged inside; The first motor, the second motor, the camera and the auxiliary light source are all connected to the control board located in the control box, and can calculate the number, density, Growth rate, etc., increase the economic benefits of farming.

Description

A device for monitoring underwater benthic animals

technical field

The utility model relates to aquaculture facilities, in particular to a device capable of effectively monitoring the activities of benthic underwater reptiles, specifically a device for monitoring underwater benthic animals.

Background technique

In the breeding process of underwater benthic animals such as river crabs or lobsters, in order to save feed, the farm needs to observe the feeding, activities and bait residues of underwater animals within a certain feeding range. Especially in order to more accurately determine the amount and area of bait spread, the size and speed of animal growth, and the impact of the environment on animal activities, it is necessary to estimate the size and number of animals. Products such as fish finders are basically qualitative observation equipment, which are difficult to meet the needs of the breeding process.

Utility model content

The purpose of this utility model is to provide a device for monitoring underwater benthic animals to solve the problems currently encountered in the aquaculture process of river crabs or lobsters, which can remotely control the camera and light source, combined with image recognition, and calculate the underwater Animal quantity, density, growth rate, etc. provide technical basis for farmers to feed accurately, prevent and control epidemic diseases, and choose the timing of listing, etc., and increase the economic benefits of farming.

The technical scheme of the utility model is:

A device for monitoring underwater benthic animals, including a support frame, a cross bar and a detection device; the support frame is a straight rod, the upper end of which is equipped with a control box, and the lower end can be inserted and fixed at the bottom of the water body; the cross bar The end is connected with the first motor installed in the control box, and can move circularly around the support frame under the drive of the first motor; the detection device is connected after going around the front end of the cross bar through a lifting rope The second motor in the control box is provided so that it can move up and down under the drive of the second motor; the detection device includes a hemispherical transparent cover, and a camera and an auxiliary light source are arranged inside; the first The motor, the second motor, the camera and the auxiliary light source are all connected with and controlled by the control main board arranged in the control box.

Further, the cross bar is retractable, and a pulley is provided at the front end, and the lifting rope is wound on the pulley to facilitate its movement.

Further, the camera is a high-resolution wide-angle camera with an observation range of 30°-120°; the surrounding of the camera is sealed and waterproofed with a sealing ring or sealant.

Further, the auxiliary light source includes a plurality of luminous lamps; the luminous lamps are uniformly arranged along the casing and surround the camera; the luminous lamps are white lights or infrared supplementary light; each luminous lamp is connected to each other through a switch to the control board so that each light can be controlled individually.

Further, the detection device is also provided with a first water depth sounder capable of sensing the depth at which the camera of the detection device is located.

Further, it also includes a second water depth detector suspended on the control box and connected to the control board, which can be placed at the bottom of the water body to sense the total depth of the water body.

Further, the control main board is also connected to a router, and can be connected to a server through the Internet, which is convenient for remote control.

The beneficial effects of the utility model:

1. Obtain quantitative indicators to increase the scientific nature of farming. The underwater monitoring device, on the basis of conventional video observation, combined with image recognition technology and field of view calculation, obtains quantitative data such as the number, density, and growth rate of underwater animals, and provides accurate feed feeding, epidemic prevention and control, and selection of listing opportunities for farmers. Provide technical assistance.

2. Basically solve the problem of unrecognizable muddy ponds. According to the water quality, the image clarity can be increased by adjusting the light intensity and the distance from the bottom of the water body. In the early stage of breeding, the water quality is clear, and the camera can be upgraded to obtain images of large-scale river crab activities. In the later stage of breeding, the pond mouth is turbid. Only when all the fill lights are turned on and close to the bottom of the pond can the fast crawling of river crabs be observed.

3. Realize remote monitoring, reduce pond patrol time and save manpower. A farmer has a breeding cycle, and a special person eats and lives at the mouth of the pond. The total time is 5 or 6 months, which is very hard. After the device is connected to the mobile phone through the network, it can realize remote direct observation no matter it is windy or rainy, hot weather, day or night, which greatly saves manpower and time.

Description of drawings

Fig. 1 is a structural representation of the utility model.

Among them: 1-support frame; 2-control box; 3-horizontal bar; 4-lifting rope; 5-detection device; 6-luminous light; 7-camera; 8-second water depth detector;

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

As shown in FIG. 1 , a device for monitoring underwater benthic animals includes a support frame 1 , a cross bar 2 and a detection device 5 . The support frame 1 is in the shape of a straight rod, the upper end of which is equipped with the control box 2, and the lower end may be pointed, so that it can be easily inserted and fixed at the bottom of the water body.

The cross bar 3 is placed horizontally above the support frame 1, and its end is connected with the first motor arranged in the control box 2, and can make a circle around the support frame 1 under the drive of the first motor. sports. The cross bar 3 is telescopic, for example, it can be spliced by multiple short bars with chute. Positioning holes and positioning marbles are arranged in the chute of each short bar, and the length of the cross bar 3 can be changed by stretching each short bar. The front end of the cross bar 3 is provided with a pulley.

The detection device 5 is connected to the second motor provided in the control box 2 after bypassing the pulley at the front end of the cross bar 3 through the lifting rope 4, so that it can move up and down driven by the second motor, Then change the size of the observation field of view. The detection device 5 includes a hemispherical transparent casing, and a camera 7 and an auxiliary light source are arranged inside. The camera 7 may be a high-resolution wide-angle camera with an observation range of 30°-120°. Simultaneously, the camera 7 is sealed and waterproofed with a sealing ring or sealant around it. The auxiliary light source includes a plurality of light emitting lamps 6 . The luminescent lamps 6 are evenly arranged along the casing, and are arranged in a multi-circle ring around the camera 7 . The light emitting lamp 6 can be a white lamp or an infrared supplementary light. The detection device is also provided with a first water depth sounder capable of sensing the depth at which the camera of the detection device is located. Preferably, the first water depth sounder can be a drawstring type displacement sensor, and the ranging error is less than 0.25%.

Both the first motor and the second motor are miniature geared motors, so that the operation is flexible and stable.

A second water depth sounder 8 is suspended and installed on the control box 2 through a connecting wire 9, which can be placed on the bottom of the water body to sense the total depth of the water body. The second water depth detector 8 can be a liquid level transmitter, and its ranging error is less than 0.3cm.

The first motor, the second motor, the camera 7, the auxiliary light source, the first water depth sounder and the second water depth sounder 8 are all connected to the control board located in the control box 2, so as to control the above-mentioned equipment. Moreover, each luminous lamp 6 on the auxiliary light source is connected to the control main board through a switch, so that each luminous lamp can be controlled independently, which is convenient for adjusting the intensity and direction of the light source. The control board can be YK_V1.0 or USR-R16-T. Further, the control main board is also connected to a router, and can be connected to a server through the Internet, which is convenient for remote control.

The using method of the present utility model comprises the following steps:

1) Adjust the crossbar to a suitable length and determine the observation point;

2) Manipulate the detection device to move up and down to a suitable height to obtain a clear image;

3) Obtain the number of monitored organisms in the lens, as well as the water depth and the depth of the camera;

4) Change the observation point, repeat the above steps 2) and 3), and average all kinds of data;

5) Using the average value in step 4), calculate according to the following formula:

Observation field of view S _view = π × H ² × TAN ² (θ/2/180);

Animal density in observation _field ρ=m/S;

Average density of underwater animals

The total number of underwater animals M = ρS _pond ;

The average size of underwater animals, that is, the average length

Among them: S is the area of _observation field of view, unit: m ² ; H is the distance from the camera to the bottom of the mud, unit: m; θ is the angle of view of the wide-angle camera, unit: °; ρ is the density of animals in the observation field of view, unit: only/m ² ; mi Be the quantity of the target benthic animals in the representative field of view selected, unit: / only; S _pond is the pond area, unit: m ² ; M is the total quantity of the target benthic animals in the pond, unit: / only; L is the average size of underwater animals, that is, the average length, unit: cm, l _i is the image length of the selected representative underwater animals, unit: cm, η is the scale coefficient, η=L _r /L _p , L _r and L _p are the nominal length and video length of the underwater scale at the same distance as the observation, unit: cm; n is the number of monitoring points.

Further, in the step 4), n≥20 different points are selected by rotating the crossbar.

Example 1:

A monitoring device for underwater benthic animals, the luminous lamp is an infrared supplementary light HL-IR6/12 (distance 60 meters, 10W); the second water depth range finder uses a liquid level transmitter MIK-P260 (24V, The range is 3 meters, 0.3, 0.5); the first water depth range finder can choose YK62 series (travel 0-2159mm) pull-rope miniature displacement sensor, and the error is less than 0.25%.

Video remote observation and recording system: The image data (12v, 1 million pixels) collected by the network wide-angle camera designed by OV9712 and HI3518 chips is connected to the 4G router through the Ethernet interface, and the 4G router is then transmitted to the server through the Internet. The server is connected to the Internet, and the video image is observed or recorded in real time by the VICAM mobile phone software APP.

Remote control system: PC or mobile client accesses the server through the INTENENT connection of the IE browser, sends instructions to the online YK_V1.0 or USR-R16-T control board, and drives the XD-37GB555 geared motor installed in the control box ( 12V), to drive the crossbar to rotate, or to realize the lifting of the camera.

Example 2

Monitoring crab breeding density

1. Configuration: The length of the support frame is 250cm, the length of the crossbar is 100cm, the control box is built with two XD-37GB555/12V geared motors, YK_V1.0 control board, 4G router, battery and other components; network digital camera (12v, 1 million pixels), infrared supplementary light HL-IR12 (6 in the inner circle and 6 in the outer circle); the water depth rangefinder is the liquid level transmitter MIK-P260.

2. How to use: Pull out the chute first, adjust the crossbar to 80cm and then fix the adjustment hole. The mobile phone client accesses the server through the INTENENT connection of the IE browser, sends instructions to the online control board, drives the second motor to realize the underwater lifting of the network camera; then turns on the switch of the infrared fill light, and adjusts the light intensity until it is satisfied The video image of the river crab before starting to shoot and record. The image data is sent to the host through the network transmission, and the instantaneous distance data obtained from the water depth range finder and the cable range finder are also sent to the host through the control board.

3. Test and calculation:

Since there are ditches on the bottom of the breeding pond, in order to obtain accurate results, in the 100×100m ² breeding pond, according to the radial pattern, 20 representative sites were selected from five directions in the southeast, northwest, and center for testing.

The water quality of the pond mouth in this experiment is moderate, and when the network camera drops to about 100cm below the water surface, the network camera observes clear images of river crab activities. The number of river crabs in the field of vision is small, and the image is clear, so manual counting is directly used.

The results are as follows:

site The number of animals in the field of view/mi H water H mirror h θ S _view Density of crabs in the field of view/ρ East 1 6 150 96 0.54 120 2.75 2.18 East 2 4 158 108 0.50 120 2.35 1.70 East 3 4 154 104 0.50 120 2.35 1.70 East 4 5 150 100 0.50 120 2.35 2.12 South 1 5 150 100 0.50 120 2.35 2.12 South 2 6 135 85 0.50 120 2.35 2.55 South 3 6 150 100 0.50 120 2.35 2.55 South 4 7 150 92 0.58 120 3.17 2.21 West 1 8 133 70 0.63 120 3.74 2.14 West 2 5 150 100 0.50 120 2.35 2.12 West 3 6 145 95 0.50 120 2.35 2.55 West 4 5 150 100 0.50 120 2.35 2.12 North 1 5 150 100 0.50 120 2.35 2.12 North 2 6 150 97 0.53 120 2.65 2.27 North 3 4 156 106 0.50 120 2.35 1.70 North 4 6 150 100 0.50 120 2.35 2.55 Medium 1 6 150 100 0.50 120 2.35 2.55 Medium 2 5 153 103 0.50 120 2.35 2.12 Medium 3 6 150 100 0.50 120 2.35 2.55 Medium 4 7 145 82 0.63 120 3.74 1.87 average value 6 / / / / / 2.19

calculation process:

Take East 1 as an example:

The water depth is 150cm, and the cable rangefinder measures that the network camera has dropped to 96cm on the water surface, so the distance between the camera and the bottom mud is H=150-96=54cm, and the angle of view of the wide-angle camera is θ=120°, then:

Observation field of _view Sview=π×H ² ×TAN ² (θ/2)=3.14*0.54 ² *TAN ² (120/2/180)=2.75m ² ;

Animal density in observation field ρ=m/ _Sview =6/2.75=2.18 animals/m ²

Estimates for the cultured pond river crab:

The measured area of the breeding pond S _pond = 100×100m ² =10000m ² ,

Average density of crabs in the breeding pond

The total number of river crabs in the breeding pond M=ρS _pond =2.23*10000=22300

4. Judgment of results: The pond was stocked with river crabs in May, with a total of 25,000 crabs. By the end of September, due to the high temperature in summer, dead crabs could be seen on the water surface. In addition, some sick crabs and scrambling for bait were slaughtered. Now the total number is estimated to be about 23,000, which meets the expectations. Estimate the result.

The parts not involved in the utility model are all the same as the prior art or can be realized by adopting the prior art.

Claims (7)

1. a kind of device for monitoring zoobenthos under water, including support frame, cross bar and detection device；It is characterized in that support frame as described above For direct rod shape, control box is installed in its upper end, and lower end is inserted into and is stabilized in water bottom；The end of the cross bar is with being located at institute The first motor stated in control box is connected, and can be circled under the driving of first motor around support frame as described above；Institute State detection device and bypassed by halliard and the second motor provided with the control box is connected to behind the front end of the cross bar, make it It can be moved up and down under the driving of second motor；The detection device includes domed transparent case, and inside sets and taken the photograph As head and secondary light source；First motor, the second motor, camera and secondary light source with the control in the control box Mainboard processed is connected, and is controlled by it.

2. the device according to claim 1 for monitoring zoobenthos under water, it is characterized in that the cross bar is extension type, it is preceding End is provided with pulley, and makes the halliard across being wound on the pulley, is easy to it to move.

3. the device according to claim 1 for monitoring zoobenthos under water, it is characterized in that the camera is high-resolution Wide-angle camera, observation scope is 30 °~120 °；The camera surrounding carries out sealing waterproof with sealing ring or fluid sealant.

4. the device according to claim 1 for monitoring zoobenthos under water, it is characterized in that the secondary light source is including multiple Electroluminescent lamp；The electroluminescent lamp is evenly arranged along the case, and around the camera；The electroluminescent lamp is white lamps or infrared light filling Lamp；Each electroluminescent lamp is connected to the control mainboard by switch respectively, enables each electroluminescent lamp individually controlled.

5. the device according to claim 1 for monitoring zoobenthos under water, it is characterized in that being additionally provided with the detection device First bathysonde, can sense the depth residing for the camera of the detection device.

6. the device according to claim 1 for monitoring zoobenthos under water, it is characterized in that also including being suspended in the control On box, and the second bathysonde being connected with the control mainboard, water bottom can be positioned over and sense the aggregate depth of water body Degree.

7. the device according to claim 1 for monitoring zoobenthos under water, it is characterized in that the control mainboard is also connected with road By device, server can be connected to by Internet, be easy to remote control.