Efficient calibration system and method for multi-class sensors of fishpond

Abstract

The invention discloses a fishpond multi-category sensor efficient calibration system and method. The system comprises a moving trolley, and the moving trolley is sequentially provided with a calibration disc, a containing groove and a waste liquid storage box from top to bottom; a mechanical arm and a drying device are arranged on one side of the moving trolley, and an anti-rotation structure and a sealing structure are arranged between every two adjacent ones of the calibration disc, the placement groove and the waste liquid storage box; a plurality of sensor clamps are arranged on the bottom side of the fixing tool, an even number of calibration areas are arranged on the calibration disc in the circumferential direction with the circle center as the center, a row of calibration grooves are formed in each calibration area, and a cleaning groove is formed between every two adjacent calibration areas; calibration liquid storage tanks are arranged in the containing tanks, and each calibration tank and each cleaning tank are communicated with the waste liquid storage box, the containing tanks and the corresponding calibration liquid storage tanks through liquid guide pipes. Different types of sensors can be calibrated in batches, and the calibration efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of calibration equipment, and in particular to a system and method for efficiently calibrating multiple categories of sensors in a fish pond. Background Art

[0002] In the process of factory fish farming, in order to better monitor various indicators in the fish pond and achieve high-density and high-quality fish farming, temperature sensors, liquid level sensors, DO sensors, EC sensors, pH sensors, ammonia nitrogen sensors, etc. are installed in the fish pond to monitor the temperature, liquid level, dissolved oxygen and other indicators in the fish pond. Since the sensors need to be calibrated after a period of use to ensure the accuracy of the sensor detection data. For example, these sensors in the fish pond are calibrated about every two weeks. The number of calibration steps, calibration requirements, and calibration fluids of these sensors are different.

[0003] If traditional dedicated sensor calibration equipment is used, the staff needs to carry multiple calibration equipment and calibrate them one by one. The calibration time required for each sensor is 3 to 5 minutes. There are about 6 sensors in a fish pond, so a fish pond needs to spend about 30 minutes for sensor calibration. A farm has dozens or hundreds of fish ponds, which will waste a lot of time to calibrate the sensors in the fish ponds, and the work efficiency is low. In addition, the farm is large, and the workers need to walk back and forth between the fish ponds and fish out the sensors, which is labor-intensive. Therefore, there is an urgent need for a calibration device that can automatically calibrate different types of sensors in each fish pond in the farm. Summary of the invention

[0004] The present invention aims to solve the technical problems existing in the prior art, and particularly innovatively proposes an efficient calibration system and method for multiple categories of fish pond sensors, which can calibrate different types of sensors in batches and improve the calibration efficiency.

[0005] In order to achieve the above-mentioned purpose, the present invention provides an efficient calibration system for multiple types of sensors in a fish pond, comprising a mobile trolley and a fixed tooling placed in the fish pond for simultaneously fixing different sensors, wherein the mobile trolley is provided with a calibration tray, a waste liquid storage tank and a placement slot in sequence from top to bottom; a mechanical arm and a drying device are provided on one side of the calibration tray of the mobile trolley, wherein the mechanical arm is used to grab the fixed tooling in the fish pond, place it on the calibration tray to complete cleaning and calibration work, and take the fixed tooling away from the calibration tray after cleaning, and dry it with the drying device;

[0006] The fixed tooling is symmetrically provided with the same number of mounting feet for fixing the sensor, the calibration disk is circumferentially evenly provided with an even number of sector-shaped calibration areas centered on the center of the circle, the robotic arm and the calibration disk can realize relative rotation according to different calibration areas to realize calibration of different steps; each of the calibration areas is radially provided with a row of calibration slots, and the number of the calibration slots matches the number of mounting feet on the left or right side of the fixed tooling, and cleaning slots are provided between adjacent calibration areas; a calibration liquid storage tank is separately provided in the placement tank corresponding to each calibration slot, and a cleaning liquid storage tank is provided corresponding to the cleaning slot, and each of the calibration slots and cleaning slots is connected to the corresponding waste liquid storage tank, cleaning liquid storage tank and calibration liquid storage tank through a liquid guide tube.

[0007] In the above scheme: the outer diameters of the calibration disk, placement slot and waste liquid storage tank match each other, and anti-rotation structure and sealing structure are provided between two adjacent ones of the calibration disk, placement slot and waste liquid storage tank, and the robotic arm can drive the fixed tooling to rotate.

[0008] In the above scheme: the bottom of the cleaning tank and the calibration tank are both provided with a liquid discharge port, each liquid discharge port is provided with an electric valve and a connector for connecting the common end of the electric three-way valve, the liquid guide pipe includes a discharge pipe and a liquid inlet pipe, the water inlet end of the electric three-way valve is connected to the waste liquid storage tank through the discharge pipe, and the water inlet end of the electric three-way valve is connected to the corresponding calibration liquid storage tank and cleaning liquid storage tank through the liquid inlet pipe, and the liquid inlet pipe is provided with a flow meter and a water pump. It can automatically drain and replace the calibration liquid and cleaning liquid.

[0009] In the above scheme: the placement groove and the waste liquid storage tank are both opened on the top, and the bottom of the placement groove is provided with a wiring hole for the drainage pipe to pass through, and the structure is simple; the bottom of the placement groove is provided with an arc-shaped positioning clip for fixing the calibration liquid storage tank, which is convenient for fixing the calibration liquid storage tank and ensuring the stability of the calibration liquid storage tank when moving.

[0010] In the above scheme: the number and slot size of the calibration slots in all calibration areas are consistent, and the calibration slots in the same calibration area are arranged adjacent to each other.

[0011] In the above scheme: the mobile cart is an AGV cart, a low liquid level sensor is arranged near the bottom of the calibration liquid storage tank and the cleaning liquid storage tank, a high liquid level sensor is arranged near the top of the waste liquid storage tank, the low liquid level sensor detection output end is connected to the cleaning liquid detection input end of the AGV cart controller, the high liquid level sensor detection output end is connected to the waste liquid detection input end of the AGV cart controller, the water pump drive input end is connected to the water pump drive output end of the AGV cart controller, the electric valve drive input end is connected to the valve output end of the AGV cart controller, the electric three-way valve drive input end is connected to the switching output end of the AGV cart controller, the mechanical arm drive input end is connected to the mechanical arm output end of the AGV cart controller, and the flow meter detection output end is connected to the flow input end of the AGV cart controller.

[0012] In the above scheme: the anti-rotation structure includes a circle of anti-rotation teeth arranged at the placement groove and the wastewater storage tank port, and tooth grooves are arranged at the bottom of the placement groove and the bottom of the calibration plate corresponding to the anti-rotation teeth;

[0013] The placement groove and the wastewater tank port are provided with a circle of ridges on the outer edge, and the bottom of the placement groove and the bottom of the calibration plate are provided with a circle of grooves on the outer edge corresponding to the ridges. The ridges and grooves can prevent left and right displacement, and the anti-rotation teeth can prevent rotation during movement.

[0014] In the above scheme: the fixed tool is made of a material that can float on the water surface, and a grabbing and positioning piece is arranged on the top of the fixed tool for easy grabbing by the robot arm. The fixed tool can be directly used as a sensor fixing structure of the fish pond, floating the sensor in the water, with various functions, and it is also convenient to grab it directly from the fish pond during calibration.

[0015] In the above scheme: the grabbing positioning piece is centrally arranged and is in the shape of a triangular prism, the sensors are evenly distributed on the left and right sides of the fixed tooling, and the mechanical arm is provided with a rotating assembly for driving the fixed tooling to rotate horizontally. The triangular prism shape is arranged to facilitate confirmation of the front and back sides when grabbing, and is suitable for the case where the sensors on both sides are of different types.

[0016] The present invention also provides an efficient calibration method for multiple types of sensors in a fish pond, including the calibration system of the above scheme, wherein the sensors are a temperature sensor, a liquid level sensor, a DO sensor, an EC sensor, a pH sensor, and an ammonia nitrogen sensor, and the six sensors are fixed on the left and right sides of a fixed tooling, respectively, and cleaning liquid is stored in all cleaning tanks. Six sector-shaped calibration areas are correspondingly arranged on the calibration disk, namely, calibration area one, calibration area two, calibration area three, calibration area four, calibration area five, and calibration area six, wherein calibration area one, calibration area two, and calibration area three correspond to the sensor arrangement on the left side of the fixed tooling, and the same calibration area The three calibration slots correspond to the sensors on the left or right side of the fixed tooling and store the corresponding calibration liquids of the corresponding sensors in a fixed order. The calibration slots of calibration area one to calibration area three store the primary calibration liquid, secondary calibration liquid and tertiary calibration liquid of the corresponding sensors in sequence according to the calibration steps corresponding to the sensors on the left side of the fixed tooling, or directly use air calibration without storing the calibration liquid; the calibration slots of calibration area four, calibration area five and calibration area six store the primary calibration liquid, secondary calibration liquid and tertiary calibration liquid of the corresponding sensors in sequence according to the calibration steps corresponding to the sensors on the right side of the fixed tooling, or directly use air calibration without storing the calibration liquid;

[0017] During calibration, the robotic arm grabs the fixed tooling from the fish pond, first cleans the sensor for the first time in the cleaning tank on the calibration plate, then the robotic arm drives the fixed tooling to move up, the drying device is started, the sensor is dried, and then the robotic arm rotates to place the sensor on the fixed tooling into the corresponding calibration liquid for a calibration. After one calibration is completed, the robotic arm is lifted and rotated, and placed in the next cleaning tank for cleaning. Then the robotic arm is lifted, the drying device is started, and drying is performed. Then the robotic arm rotates to place the sensor on the fixed tooling into the corresponding calibration liquid or air of the next calibration process, and so on to complete the calibration work.

[0018] In summary, the beneficial effects of the present invention are: it is possible to move between the fish ponds by a mobile cart, so as to fish out the sensors in each fish pond and calibrate them, batch calibrate, save work time, and improve work efficiency. The calibration liquid storage tank, placement tank and waste liquid storage tank can store the prepared calibration liquid and cleaning liquid to meet the requirements of completing a calibration and draining and supplying, thereby improving work efficiency. The drying device can dry the sensor to ensure the calibration accuracy of the next step. The calibration tray can place the calibration liquid corresponding to different sensors to meet the requirements of calibrating different sensors. The multiple calibration areas correspond to each calibration step of the sensor, and the cleaning tank can be cleaned after each calibration step is completed to ensure the calibration accuracy of the next calibration step. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 is a cross-sectional view of the calibration tray, placement tank, and waste tank.

[0021] Figure 3 It is a schematic diagram of the fixed tooling.

[0022] Figure 4 It is a top view of the fixed tooling.

[0023] Figure 5 is a perspective view of a calibration disk.

[0024] Figure 6 is a front view of the calibration plate.

[0025] Figure 7 This is a top view of the placement slot. DETAILED DESCRIPTION

[0026] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:

[0027] like Figure 1 to Figure 7 As shown, a high-efficiency calibration system for multiple types of sensors in a fish pond includes a mobile trolley 1 and a fixed tool 6 placed in the fish pond for simultaneously fixing different sensors. The mobile trolley 1 is provided with a calibration tray 4, a waste liquid storage tank 2 and a placement slot 3 from top to bottom. A mechanical arm 8 and a drying device 9 are provided on one side of the calibration tray 4 on the mobile trolley 1. The mechanical arm 8 is used to grab the fixed tool 6 in the fish pond. The mechanical arm 8 can drive the fixed tool 6 to rotate, and place it on the calibration tray 4 to complete the cleaning and calibration work, and after cleaning, take the fixed tool away from the calibration tray and dry it with a drying device 9.

[0028] The outer diameters of the calibration plate 4, the placement slot 3 and the waste liquid storage tank 2 are matched with each other, and the waste liquid storage tank 2 is fixedly mounted on the mobile trolley 1. The placement slot 3 is placed on the waste liquid storage tank 2, and the calibration plate 4 is placed on the placement slot 3, and an anti-rotation structure and a sealing structure are provided between two adjacent ones of the calibration plate 4, the placement slot 3 and the waste liquid storage tank 2.

[0029] The same number of mounting feet 6a for fixing the sensor are symmetrically arranged on the fixed fixture 6, and an even number of sector-shaped calibration areas are arranged circumferentially with the center of the circle as the center on the calibration disk 4. A row of calibration slots 4a are arranged in sequence from the center of the circle to the outside in each calibration area, and the number of calibration slots 4a matches the number of mounting feet 6a on the left side of the fixed fixture 6. Cleaning slots 4d are arranged between adjacent calibration areas, and a calibration liquid storage tank 3a is separately arranged in the placement slot 3 corresponding to each calibration slot 4a, and a cleaning liquid storage tank 3i is arranged corresponding to the cleaning slot 4d. An arc-shaped positioning clip 3b for fixing the calibration liquid storage tank 3a and the cleaning liquid storage tank is arranged at the bottom of the placement slot 3, which is convenient for fixing the calibration liquid storage tank 3a and ensuring the stability of the calibration liquid storage tank 3a when moving.

[0030] The cleaning tank 4d and the calibration tank 4a are both provided with liquid discharge ports at the bottom, each of which is provided with an electric valve 4b and a connector for connecting the common end of the electric three-way valve 4c. The liquid guide pipe includes a discharge pipe 3d and a liquid inlet pipe 3e. The water inlet end of the electric three-way valve 4c is connected to the waste liquid storage tank 2 through the discharge pipe 3d, and the water inlet end of the electric three-way valve 4c is connected to the corresponding calibration liquid storage tank 3a and cleaning liquid storage tank 3i through the liquid inlet pipe 3e. The flow meter 3f and the water pump 3g are provided on the liquid inlet pipe 3e. The calibration liquid and cleaning liquid can be automatically drained and replaced.

[0031] The number and size of the calibration slots 4a in all calibration areas are consistent, and the calibration slots 4a in the same calibration area are arranged adjacent to each other. The inner end of the cleaning slot 4d matches the position of the inner calibration slot 4a, and the outer end of the cleaning slot 4d matches the position of the outer calibration slot 4a.

[0032] The mobile cart 1 is an AGV cart. A low liquid level sensor 3c is arranged near the bottom of the calibration liquid storage tank 3a and the cleaning liquid storage tank 3i. A high liquid level sensor 2a is arranged near the top of the waste liquid storage tank 2. The detection output end of the low liquid level sensor 3c is connected to the cleaning liquid detection input end of the AGV cart controller, the detection output end of the high liquid level sensor 2a is connected to the waste liquid detection input end of the AGV cart controller, the water pump drive input end is connected to the water pump drive output end of the AGV cart controller, the electric valve 4b drive input end is connected to the valve output end of the AGV cart controller, the electric three-way valve 4c drive input end is connected to the switching output end of the AGV cart controller, the mechanical arm 8 drive input end is connected to the mechanical arm 8 output end of the AGV cart controller, and the flow meter 3f detection output end is connected to the flow input end of the AGV cart controller.

[0033] The placement slot 3 and the waste liquid storage tank 2 are both opened, and a wiring hole for the drain pipe 3d to pass through is provided at the bottom of the placement slot 3, and the structure is simple. The anti-rotation structure includes a circle of anti-rotation teeth b provided at the placement slot 3 and the port of the waste water storage tank, and tooth grooves are provided at the bottom of the placement slot 3 and the bottom of the calibration disk 4 corresponding to the anti-rotation teeth b.

[0034] The placement groove 3 and the wastewater tank port are provided with a circle of ridges a near the outer edge, and the bottom of the placement groove 3 and the bottom of the calibration plate 4 are provided with a circle of grooves corresponding to the ridges a near the outer edge. The ridges a and grooves provided can prevent left and right displacement, and the anti-rotation teeth b provided can prevent rotation during movement. The sealing structure is a sealing layer laid on the ridges a, the grooves, the anti-rotation teeth b and the tooth grooves.

[0035] The fixed fixture 6 is made of a material that can float on the water surface. The bottom side of the fixed fixture 6 is provided with a mounting foot 6a for mounting the sensor corresponding to each sensor, and the top of the fixed fixture 6 is provided with a grabbing positioning piece 6b that is convenient for the robot arm 8 to grab. The fixed fixture 6 can be directly used as a sensor fixing structure of the fish pond, and the sensor is floated in the water. It has various functions and is also convenient to grab directly from the fish pond during calibration. The grabbing positioning piece 6b is set in the center and is in the shape of a triangular prism. The sensors are evenly distributed on the left and right sides of the fixed fixture 6. The robot arm 8 is provided with a rotating component for driving the fixed fixture 6 to rotate horizontally. It is set in the shape of a triangular prism, which is convenient for confirming the front and back sides when grabbing, and is suitable for the situation where the sensors on both sides are of different types.

[0036] The present invention also provides an efficient calibration method for multiple types of sensors in a fish pond, wherein the sensors are temperature sensors, liquid level sensors, DO sensors, EC sensors, pH sensors, and ammonia nitrogen sensors, and the six sensors are respectively fixed on the left and right sides of the fixed tooling 6. Cleaning liquid is stored in all cleaning tanks, and six sector-shaped calibration areas are correspondingly arranged on the calibration disk 4, namely, calibration area 1, calibration area 2, calibration area 3, calibration area 4, calibration area 5, and calibration area 6.

[0037] The sensors fixed on the left side of the fixed fixture 6 are, from left to right, the temperature sensor, the liquid level sensor and the DO sensor. The sensors fixed on the right side are, from left to right, the EC sensor, the pH sensor and the ammonia nitrogen sensor. The corresponding calibration tanks 4a in the calibration area 1 to the calibration area 6 are also three.

[0038] Calibration areas 1 to 3 are used for calibrating the sensors fixed on the left side of the fixed tooling 6. Specifically, the three calibration slots 4a in calibration area 1 store the temperature sensor primary calibration liquid, the liquid level sensor primary calibration liquid and the DO sensor primary calibration liquid in sequence from the outside to the inside.

[0039] The three calibration slots 4a in the calibration area 2 store the temperature sensor secondary calibration liquid, the liquid level sensor secondary calibration liquid and no calibration liquid in sequence from the outside to the inside. Because the second calibration of the DO sensor is air calibration, the DO sensor only needs to be placed in the empty calibration slot 4a.

[0040] The three calibration tanks 4a in the calibration area 3 store three calibration solutions of the temperature sensor, three calibration solutions of the liquid level sensor and no calibration solution in sequence from the outside to the inside. In general, the DO sensor can be calibrated twice, and in special cases, it can be calibrated three times.

[0041] Calibration areas four to six are used for calibrating the sensors fixed on the right side of the fixed fixture 6. Specifically, the three calibration slots 4a in calibration area four store the primary calibration liquid of the ammonia nitrogen sensor, the primary calibration liquid of the pH sensor and the primary calibration liquid of the EC sensor in sequence from the outside to the inside.

[0042] The three calibration tanks 4a in the calibration area 5 store the secondary calibration solution of the ammonia nitrogen sensor, the secondary calibration solution of the pH sensor and the secondary calibration solution of the EC sensor in sequence from the outside to the inside.

[0043] The three calibration tanks 4a in the calibration area 6 store the ammonia nitrogen sensor three-time calibration solution, the pH sensor three-time calibration solution and the EC sensor three-time calibration solution in sequence from the outside to the inside. Similarly, two calibrations are sufficient in general cases, and three calibrations are required in special cases.

[0044] During calibration, the robot arm 8 grabs the fixed tool 6 from the fish pond and first cleans the sensor in the cleaning tank 4d on the calibration plate 4. Then the robot arm 8 drives the fixed tool 6 to move upward, and the drying device 9 is started. The drying device 9 is provided with a heating module, which can dry the sensor with hot air. Then the robot arm 8 rotates and puts the sensor on the fixed tool 6 into the corresponding primary calibration liquid for a calibration.

[0045] After one calibration is completed, the robot arm 8 is lifted and rotated, and placed in the next cleaning tank 4d for cleaning. Then the robot arm 8 is lifted, and the drying device 9 is started to dry. Then the robot arm 8 rotates to place the sensor on the fixed tooling 6 into the calibration liquid or air of the corresponding next calibration process. For example, if the next calibration process is air calibration, no calibration liquid is placed in the corresponding calibration tank, and the calibration work is completed by analogy.

Claims

1. An efficient calibration system for multiple types of sensors in fish ponds, characterized by: The invention comprises a mobile trolley (1) and a fixed tool (6) placed in a fish pond for simultaneously fixing different sensors, wherein the mobile trolley (1) is provided with a calibration tray (4), a waste liquid storage tank (2) and a placement slot (3) in order from top to bottom; a mechanical arm (8) and a drying device (9) are provided on one side of the calibration tray (4) on the mobile trolley (1), wherein the mechanical arm (8) is used to grab the fixed tool (6) in the fish pond, place it on the calibration tray (4) to complete cleaning and calibration work, and after cleaning, take the fixed tool away from the calibration tray and dry it with the drying device (9); The fixed fixture (6) is symmetrically provided with the same number of mounting feet (6a) for fixing the sensor; the calibration disk (4) is evenly divided into an even number of sector-shaped calibration areas with the center of the circle as the center; the mechanical arm and the calibration disk (4) can realize relative rotation according to different calibration areas to realize calibration in different steps; each calibration area is radially provided with a row of calibration slots (4a), and the number of the calibration slots (4a) matches the number of the mounting feet (6a) on the left or right side of the fixed fixture (6); and cleaning slots (4d) are provided between adjacent calibration areas; a calibration liquid storage tank (3a) is separately provided in the placement tank (3) corresponding to each calibration slot (4a), and a cleaning liquid storage tank is provided in the cleaning slot (4d); each calibration slot (4a) and cleaning slot (4d) is connected to the corresponding waste liquid storage tank (2), cleaning liquid storage tank and calibration liquid storage tank (3a) through a liquid guide tube.

2. The fish pond multi-category sensor efficient calibration system according to claim 1, characterized in that: The outer diameters of the calibration disk (4), the placement slot (3) and the waste liquid storage tank (2) all match each other, and an anti-rotation structure and a sealing structure are provided between two adjacent ones of the calibration disk (4), the placement slot (3) and the waste liquid storage tank (2), and the mechanical arm can drive the fixed tooling to rotate.

3. The fish pond multi-category sensor efficient calibration system according to claim 1, characterized in that: The cleaning tank (4d) and the calibration tank (4a) are both provided with a liquid discharge port at the bottom, each liquid discharge port is provided with an electric valve (4b) and a connector for connecting the common end of the electric three-way valve (4c), the liquid guide pipe comprises a liquid discharge pipe (3d) and a liquid inlet pipe (3e), the water inlet end of the electric three-way valve (4c) is connected to the waste liquid storage tank (2) through the liquid discharge pipe (3d), the water inlet end of the electric three-way valve (4c) is connected to the corresponding calibration liquid storage tank (3a) and cleaning liquid storage tank through the liquid inlet pipe (3e), and the liquid inlet pipe (3e) is provided with a flow meter (3f) and a water pump (3g).

4. The fish pond multi-category sensor efficient calibration system according to claim 2, characterized in that: The placement groove (3) and the waste liquid storage tank (2) are both opened at the top, the bottom of the placement groove (3) is provided with a wiring hole for the drainage pipe (3d) to pass through, and the bottom of the placement groove (3) is provided with an arc-shaped positioning clip (3b) for fixing the calibration liquid storage tank (3a) and the cleaning liquid storage tank.

5. The fish pond multi-category sensor efficient calibration system according to claim 1, characterized in that: The number and size of the calibration slots (4a) in all calibration areas are consistent, and the calibration slots (4a) in the same calibration area are arranged adjacent to each other.

6. The fish pond multi-category sensor efficient calibration system according to claim 2, characterized in that: The mobile vehicle (1) is an AGV vehicle. A low liquid level sensor (3c) is arranged near the bottom of the calibration liquid storage tank (3a) and the cleaning liquid storage tank. A high liquid level sensor (2a) is arranged near the top of the waste liquid storage tank (2). The detection output end of the low liquid level sensor (3c) is connected to the cleaning liquid detection input end of the AGV vehicle controller. The detection output end of the high liquid level sensor (2a) is connected to the waste liquid detection input end of the AGV vehicle controller. The water pump (3g) drive input end is connected to the water pump drive output end of the AGV vehicle controller. The electric valve (4b) drive input end is connected to the valve output end of the AGV vehicle controller. The electric three-way valve (4c) drive input end is connected to the switching output end of the AGV vehicle controller. The mechanical arm (8) drive input end is connected to the mechanical arm (8) output end of the AGV vehicle controller. The flow meter (3f) detection output end is connected to the flow input end of the AGV vehicle controller.

7. The fish pond multi-category sensor efficient calibration system according to claim 1, characterized in that: The anti-rotation structure comprises a circle of anti-rotation teeth (b) arranged at the placement groove (3) and the wastewater storage tank port, and tooth grooves are arranged at the bottom of the placement groove (3) and the bottom of the calibration plate (4) corresponding to the anti-rotation teeth (b); The placement groove (3) and the wastewater storage tank port are provided with a circle of ridges (a) on the outer edges, and the bottom of the placement groove (3) and the bottom of the calibration plate (4) are provided with a circle of grooves corresponding to the ridges (a) on the outer edges.

8. The fish pond multi-category sensor efficient calibration system according to claim 1, characterized in that: The fixing tool (6) is made of a material capable of floating on the water surface, and a grabbing positioning piece (6b) is provided on the top of the fixing tool (6) for facilitating grabbing by a mechanical arm (8).

9. The fish pond multi-category sensor efficient calibration system according to claim 8, characterized in that: The grabbing and positioning member (6b) is centrally arranged and is in the shape of a triangular prism. The sensors are evenly distributed on the left and right sides of the fixed tooling (6). The mechanical arm (8) is provided with a rotating component for driving the fixed tooling (6) to rotate horizontally.

10. An efficient calibration method for multiple types of sensors in a fish pond, characterized by: The invention comprises a calibration system as claimed in any one of claims 1 to 9, wherein the sensors are a temperature sensor, a liquid level sensor, a DO sensor, an EC sensor, a pH sensor, and an ammonia nitrogen sensor, wherein the six sensors are fixed on the left and right sides of a fixed fixture (6), respectively, and cleaning liquid is stored in all cleaning tanks. The calibration disk (4) is provided with six sector-shaped calibration areas, which are calibration area 1, calibration area 2, calibration area 3, calibration area 4, calibration area 5, and calibration area 6, respectively, wherein the calibration area 1, calibration area 2, and calibration area 3 correspond to the sensor arrangement on the left side of the fixed fixture (6), and the three calibration tanks (4a) in the same calibration area correspond to the calibration area 1. The sensors on the left or right side of the fixed tooling (6) store the corresponding calibration liquids of the corresponding sensors in a fixed order; the calibration slots (4a) of the calibration area one to the calibration area three store the primary calibration liquid, the secondary calibration liquid and the tertiary calibration liquid of the corresponding sensors in sequence according to the calibration steps for the sensors on the left side of the fixed tooling (6), or directly use air calibration without storing the calibration liquid; the calibration slots (4a) of the calibration area four, the calibration area five and the calibration area six store the primary calibration liquid, the secondary calibration liquid and the tertiary calibration liquid of the corresponding sensors in sequence according to the calibration steps for the sensors on the right side of the fixed tooling (6), or directly use air calibration without storing the calibration liquid; During calibration, the mechanical arm (8) grabs the fixed tooling (6) from the fish pond, first cleans the sensor in the cleaning tank (4d) on the calibration plate (4), then the mechanical arm (8) drives the fixed tooling (6) to move upward, the drying device (9) is started, the sensor is dried, then the mechanical arm (8) rotates, and the sensor on the fixed tooling (6) is placed in the corresponding primary calibration liquid for a calibration, after the calibration is completed, the mechanical arm (8) is lifted and rotated, and placed in the next cleaning tank (4d) for cleaning, then the mechanical arm (8) is lifted, the drying device (9) is started, and the drying is performed, then the mechanical arm (8) rotates and places the sensor on the fixed tooling (6) in the corresponding calibration liquid or air of the next calibration process, and the calibration work is completed by analogy.

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