Water flow rate and direction detection device calibration device and calibration method

Abstract

The application provides a water flow velocity and flow direction detection device calibration device and a calibration method. The calibration device comprises a water tank, a first moving part, a counterweight, a stress sensor, and a second moving part. The water tank is internally provided with water. The first moving part is slidably arranged in the water tank. A suspension mechanism is arranged on the moving part. A detection cable is suspended on the suspension mechanism. A detection ball to be calibrated is arranged on the detection cable. The counterweight is connected to the bottom end of the detection cable. The stress sensor is arranged on the detection cable and above the first moving part. The second moving part is slidably connected to the detection cable between the counterweight and the stress sensor. The water tank is provided with water, which can perfectly simulate a water environment. The first moving part can simulate the impact of water on the detection ball. The counterweight and the second moving part can simulate the impact of water on the detection ball below the detection ball to be measured, so as to calibrate the detection ball of the water flow velocity and flow direction detection device.

Description

Technical Field

[0001] This invention belongs to the field of calibration device technology, and more specifically, it relates to a calibration device for a water flow velocity and direction detection device. This invention also relates to a calibration method for a water flow velocity and direction detection device. Background Technology

[0002] To simultaneously measure the direction and velocity of water flow at different depths in a body of water, a water flow direction and velocity detection device is used. This device includes a float, a power supply, a detection cable, multiple detection balls, and a control device. The float floats on the water surface, and the power supply is mounted on the float. The detection cable is connected to the power supply and passes through the bottom of the float, extending below it. The detection balls are mounted on the detection cable, which has a stress detection device that detects the stress in the cable. Multiple wires are mounted on the detection balls, each with a signal transmitter. Under the influence of the water flow, these wires form a loop. The control device is located inside the float and is connected to the stress detection devices and the signal transmitter. Through the loop formed by the detection cable and wires, the control device receives signals from the signal transmitter to determine the direction of the water flow. Two stress detection devices are installed inside the detection balls; the difference between their readings is the stress on the detection ball. The weight of the detection ball is known, and the lateral force on the detection ball can be calculated using trigonometric functions. The control device has preset values ​​corresponding to the lateral force and the water flow velocity, allowing it to determine the water flow velocity.

[0003] As the usage time increases, water flow velocity and direction detection devices will inevitably develop errors, affecting the accuracy of the measurement. However, it is difficult to calibrate water flow velocity and direction detection devices in the existing technology. Summary of the Invention

[0004] The purpose of this invention is to provide a water flow velocity and direction detection device to solve the problem that it is difficult to calibrate water flow velocity and direction detection devices in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a calibration device for a water flow velocity and direction detection device is provided, comprising a water tank, a first moving part, a counterweight, a stress sensor, and a second moving part. The water tank is filled with water. The first moving part is slidably disposed within the water tank, and a suspension mechanism is provided on the moving part. A detection cable is suspended from the suspension mechanism, and the detection ball to be calibrated is disposed on the detection cable. The counterweight is connected to the bottom end of the detection cable. The stress sensor is disposed on the detection cable and above the first moving part. The second moving part is disposed on the first moving part, and the second moving part is slidably connected to the detection cable between the counterweight and the stress sensor, allowing the counterweight to move under the drive of the second moving part.

[0006] In one possible implementation, the first moving part includes a moving mechanism and a driving mechanism. The moving mechanism includes a detection platform with multiple rollers at its bottom. The driving mechanism includes a winch and a traction rope located at the power output end of the winch. The bottom end of the traction rope is connected to the detection platform, enabling the winch to drive the detection platform to move.

[0007] In one possible implementation, the first moving part further includes two pulleys, which are arranged vertically at intervals and positioned on the same vertical line. The upper pulley is located on one side of the winch, and the lower pulley is located on one side of the detection platform. The traction rope passes through the two pulleys in sequence, making the traction rope zigzag, and the horizontally arranged portion of the traction rope remains horizontal, while the vertically arranged portion of the traction rope remains vertical.

[0008] In one possible implementation, the second moving part includes a drive mechanism and a traction mechanism. The traction mechanism is connected to the power output end of the drive mechanism. Limiting plates are provided at both ends of the traction mechanism, and a roller is provided between the limiting plates. The roller is a V-shaped roller, and the detection cable, which is located above the counterweight and below the stress sensor, overlaps the roller.

[0009] In one possible implementation, the water flow velocity and direction detection device calibration device further includes a baffle, which is disposed on the top of the detection platform and covers the second moving part.

[0010] In one possible implementation, the top of the detection platform is provided with a lifting mechanism, and the baffle is disposed on the lifting mechanism, so that the baffle can move up and down under the drive of the lifting mechanism. The length of the detection cable between the detection ball and the suspension mechanism is the same as the length of the detection cable between the detection ball and the stress sensor.

[0011] In one possible implementation, the top plate of the deflector has a strip-shaped hole, and the interior of the deflector has a receiving cavity. The receiving cavity contains two sealing components, which have two states: contracted and extended. When each sealing component is in the extended state, its length is not less than the length of the strip-shaped hole. One end of each sealing component is located on the side wall of the strip-shaped hole, and the other end of each sealing component is connected to the same collar. The detection cable passes through the collar, and the top end of each sealing component is close to the top plate, so that the sealing component can block the strip-shaped hole.

[0012] In one possible implementation, the inside of the collar is equipped with a water-blocking element.

[0013] The beneficial effects of the calibration device for the water flow velocity and direction detection device provided by the present invention are as follows: Compared with the prior art, the present invention can perfectly simulate the water environment by setting up a water tank and filling the water tank with water, and can simulate the impact of water on the detection ball by setting up a first moving part, and can simulate the impact of water on the detection ball below the detection ball by setting up a counterweight and a second moving part, so as to calibrate the detection ball of the water flow velocity and direction detection device.

[0014] This invention also provides a calibration method for a water flow velocity and direction detection device, using the above-mentioned water flow velocity and direction detection device calibration device, including: S1, labeling the detection balls to be tested from bottom to top as 1, 2, 3...; S2, suspending detection ball No. 1 on a support, reading detection data in water in a static state, with an initial force value of N10, and the direction sensors not activated; S3, starting the winch to gradually accelerate the detection platform until the predetermined upper limit of water flow velocity detection V is reached, reading and recording a series of data from the stress detection device of detection ball No. 1 during this process, and organizing the data of the stress detection device (N10-N1n) and the corresponding functional relationship of water flow velocity V=F(N); the data of the direction sensor of ball No. 1 is read simultaneously. Take; S4, select multiple test flow rates, denoted as V1, V2, V3, V4... Select the same number of points from the data of test ball 1 as calibration points for the stress sensor, denoted as N11, N12, N13, N14... Suspend test ball 2 on the suspension mechanism, and suspend a counterweight of equal weight to the test ball on the detection cable. In the static state, the readings of the two stress detection devices inside test ball 2 are N200 and N200, with a difference of ΔN200. The direction sensors are not activated. Adjust the second moving part so that the reading of the stress sensor is N11. Read the readings of the two stress detection devices inside test ball 2 at this time, which are N201 and N201, with a difference of ΔN201. Read the readings of the stress sensor in the same way. The stress differences corresponding to the No. 2 detection ball when the readings are N12, N13, N14... are ΔN202, ΔN203, ΔN204...; S5, Start the winch to make the detection platform move forward in the water at a speed of V1. At the same time, adjust the second moving part so that the detection cable and counterweight under the No. 2 detection ball are freely suspended under the No. 2 detection ball without being affected by the second moving part. Read the data N210 and N210 of the two stress detection devices inside the No. 2 detection ball at this time. The difference between the two is ΔN210; Maintain the moving platform speed V1, adjust the second moving part so that the reading of the stress sensor is N11. Read the readings N211 and N211 of the two stress detection devices inside the No. 2 detection ball at this time. The difference between the two is ΔN211. Similarly, the stress difference values ​​ΔN212, ΔN213, ΔN214... of the No. 2 detection ball are read at stress sensor readings of N12, N13, N14... and the direction sensor data are read simultaneously; S6, at speeds of V2, V3, V4, and V5 respectively, data acquisition and recording are completed according to steps S4 and S5, and the data is sorted to obtain the equation of function 1. Substitute the reading N1n of the No. 1 detection ball into the equation of function 1 to obtain the difference data of multiple stress detection devices of the No. 2 detection ball. Then, use this data to make a regression equation between the difference data of the No. 2 detection ball at the reading N1n of the No. 1 detection ball and the water flow velocity of the water area where it is located. Then, substitute the difference data of the No. 2 detection ball into the equation to obtain the water flow velocity of the water area where the detection ball is located.S7. Increase the weight of the counterweight and measure the data of other test balls. Using the stress sensor reading range Nn00-Nn55 during ball n's calibration as a limit, select multiple points as calibration points for the stress sensor. Repeat steps S4 to S6 to obtain the calibration data for test ball n+1.

[0015] In one possible implementation, in step S7, when measuring the test ball n, the mass of the counterweight is the sum of the weight of n-1 test balls and the mass of n-2 test cables between the test balls and the suspension mechanism.

[0016] The beneficial effect of the calibration method for the water flow velocity and direction detection device provided by the present invention is that, compared with the prior art, the present invention accurately calculates the relationship between the stress on the detection ball and the water flow velocity by detecting a series of data of the ball in a simulated environment and using regression equations and other methods. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the calibration device structure for the water flow velocity and direction detection device provided in Embodiment 1 of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the second moving part provided in Embodiment 1 of the present invention;

[0020] Figure 3 This is a schematic diagram of the internal structure of the deflector provided in Embodiment 1 of the present invention;

[0021] Figure 4 This is a schematic diagram of the collar structure provided in Embodiment 1 of the present invention.

[0022] The labels for the attached figures are as follows:

[0023] 1. Water; 4. Detection ball; 7. Detection rope; 15. Winch; 16. Counterweight; 17. Flow deflector; 18. Traction mechanism; 19. Stress sensor; 20. Drive mechanism; 21. Traction rope; 22. Detection platform; 23. Roller; 24. Support column; 25. Water tank; 26. Pulley; 27. Roller; 28. Limiting plate; 29. ​​Collar; 30. Folding partition; 31. Mounting plate; 32. Lifting device; 33. Water blocking component. Detailed Implementation

[0024] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] It should be further noted that the accompanying drawings and embodiments of the present invention mainly describe the concept of the present invention. Based on this concept, some specific forms and arrangements of connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of the present invention, they can implement the above-mentioned specific forms and arrangements in a well-known manner.

[0026] When a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0027] The terms “length”, “width”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0028] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0029] Example 1

[0030] The calibration device for the water flow velocity and direction detection device provided by the present invention will now be described.

[0031] Please refer to the following: Figure 1The water flow velocity and direction detection calibration device includes a water tank 25, a first moving part, a counterweight 16, a stress sensor 19, and a second moving part. The water tank 25 is filled with water 1. The first moving part is slidably disposed within the water tank 25 and has a suspension mechanism. A detection cable 7 is suspended from the suspension mechanism, and a detection ball 4 to be calibrated is disposed on the detection cable 7. The counterweight 16 is connected to the bottom end of the detection cable 7. The stress sensor 19 is disposed on the detection cable 7 and above the first moving part. The second moving part is disposed on the first moving part and is slidably connected to the detection cable 7 between the second moving part, the counterweight 16, and the stress sensor 19, allowing the counterweight 16 to move under the drive of the second moving part. In this embodiment, the suspension mechanism includes a crossbar supporting and disposed at the top of a support column 24, and the detection cable 7 is fixed to the crossbar.

[0032] The beneficial effects of the water flow velocity and direction detection device calibration device provided in this embodiment are as follows: Compared with the prior art, this embodiment can perfectly simulate the water environment by setting a water tank 25 and filling the water tank 25 with water 1. Furthermore, by setting a first moving part, it can simulate the impact of water 1 on the detection ball. By setting a counterweight 16 and a second moving part, it can simulate the impact of water 1 on the detection ball 4 below the detection ball 4 to be tested, so as to calibrate the detection ball 4 of the water flow velocity and direction detection device.

[0033] Based on the above design concept, the first moving part includes a moving mechanism and a driving mechanism 20. The moving mechanism includes a detection platform 22, and the bottom of the detection platform 22 is provided with multiple rollers 23. The driving mechanism 20 includes a winch 15 and a traction rope 21 located at the power output end of the winch 15. The bottom end of the traction rope 21 is connected to the detection platform 22, so that the winch 15 can drive the detection platform 22 to move, so that the detection platform 22 can move, so that the detection ball 4 to be detected and the water 1 generate a relative velocity, simulating the impact of the water 1 on the detection ball 4.

[0034] As a preferred embodiment, the first moving part further includes two pulleys 26, which are arranged vertically at intervals and are positioned on the same vertical line. The upper pulley 26 is located on one side of the winch 15, and the lower pulley 26 is located on one side of the testing platform 22. The traction rope 21 passes through the two pulleys 26 in sequence, making the traction rope 21 zigzag. The horizontal part of the traction rope 21 remains horizontal, and the vertical part of the traction rope 21 remains vertical. This ensures that the winding speed of the winch 15 on the traction rope 21 is the moving speed of the testing platform, making it easier to control the speed of the testing platform 22 to maintain a linear increase.

[0035] like Figure 2As shown, the second moving part includes a drive mechanism 20 and a traction mechanism 18. The traction mechanism 18 is connected to the power output end of the drive mechanism 20. Limiting plates 28 are provided at both ends of the traction mechanism 18, and a roller 27 is provided between the limiting plates 28. The roller 27 is a V-shaped roller. The detection cable 7, located above the counterweight 16 and below the stress sensor 19, overlaps on the roller 27. The roller 27 facilitates the sliding of the detection cable 7.

[0036] like Figure 3 As shown, the water flow velocity and direction detection device calibration device also includes a baffle 17, which is located on the top of the detection platform 22 and covers the second moving part. The baffle 17 can be used to reduce the impact of water flow on its internal facilities and reduce calibration errors.

[0037] Furthermore, a lifting mechanism 32 is provided on the top of the detection platform 22, and a baffle 17 is mounted on the lifting mechanism 32, allowing the baffle 17 to move up and down under the drive of the lifting mechanism 32. The length of the detection cable 7 between the detection ball 4 and the suspension mechanism is the same as the length of the detection cable 7 between the detection ball 4 and the stress sensor 19. The lifting mechanism 32 ensures that the stress sensor 19 remains in close contact with the top plate of the baffle 17, preventing the detection cable 7 below the stress sensor 19 from being affected by water 1 and reducing calibration accuracy. A mounting plate 31 is provided inside the baffle 17, and a second moving part is mounted on the mounting plate 31. A counterweight 16 is located below the mounting plate 31, and even when the counterweight 16 is moved to the bottom, it still cannot contact the bottom of the baffle 17.

[0038] Preferably, the top plate of the baffle 17 has a strip-shaped hole, and the interior of the baffle has a receiving cavity containing two sealing components. These sealing components have both contracted and extended states, and when in the extended state, the length of each sealing component is not less than the length of the strip-shaped hole. One end of each sealing component is located on the side wall of the strip-shaped hole, and the other end is connected to the same collar 29. The detection cable 7 passes through the collar 29, and the top of each sealing component is tightly attached to the top plate, allowing the sealing components to seal the strip-shaped hole. The sealing components prevent water entering through the strip-shaped hole from adversely affecting the water flow calibration accuracy.

[0039] Finally, the sealing assembly uses a folded partition 30. The folded partition 30 has no elastic stress, which avoids generating additional stress on the detection cable 7 and affecting calibration accuracy. Figure 4 As shown, the inside of the collar 29 is provided with a water-blocking component 33. The water-blocking component 33 can be made of soft and elastic materials such as a brush or multiple pieces of silicone to ensure that stress on the detection cable 7 is reduced while maintaining close contact with the detection cable 7.

[0040] Example 2

[0041] The present invention also provides a calibration method for a water flow velocity and direction detection device, which uses the above-mentioned water flow velocity and direction detection device calibration device for calibration, and mainly includes the following steps:

[0042] S1. Number the test balls to be tested from bottom to top as 1, 2, 3...

[0043] S2. Suspend the No. 1 detection ball on the bracket and read the detection data in the water in a static state. The initial force value is N10, and the direction sensors are not activated.

[0044] S3. Start the winch 15 and gradually accelerate the detection platform 22 until the predetermined upper limit of water flow rate detection V is reached. Read and record a series of data from the stress detection device inside the No. 1 detection ball during this process, and sort out the functional relationship between the stress detection device data N10-N1n and the corresponding water flow rate V=F(N); the data from the No. 1 ball orientation sensor is read at the same time.

[0045] S4. Select multiple test flow rates, denoted as V1, V2, V3, V4... Select the same number of points from the data of test ball 1 as calibration points for stress sensor 19, denoted as N11, N12, N13, N14... Suspend test ball 2 on the suspension mechanism, and suspend a counterweight of equal weight to the test ball on the detection cable 7. In the static state, the readings of the two stress detection devices inside test ball 2 are N200 and N200, with a difference of ΔN200. The direction sensors are not activated. Adjust the second moving part so that the reading of stress sensor 19 is N11. Read the readings of the two stress detection devices inside test ball 2 at this time, which are N201 and N201, with a difference of ΔN201. Similarly, read the stress difference values ​​ΔN202, ΔN203, ΔN204... corresponding to test ball 2 when the readings of stress sensor 19 are N12, N13, N14...

[0046] S5. Start the winch 15 to make the detection platform 22 move forward in the water at a speed of V1. At the same time, adjust the second moving part so that the detection cable 7 and the counterweight under the No. 2 detection ball are freely suspended under the No. 2 detection ball without being affected by the second moving part. Read the data N210 and N210 of the two stress detection devices inside the No. 2 detection ball at this time. The difference between the two is ΔN210. Keep the moving platform speed V1 and adjust the second moving part so that the reading of the stress sensor 19 is N11. Read the readings of the two stress detection devices inside the No. 2 detection ball at this time as N211 and N211. The difference between the two is ΔN211. In the same way, read the stress difference values ​​ΔN212, ΔN213, ΔN214... of the No. 2 detection ball when the readings of the stress sensor 19 are N12, N13, N14... and read the direction sensor data at the same time.

[0047] S6. At speeds V2, V3, V4, and V5 respectively, complete data acquisition and recording according to steps S4 and S5, and record the data as shown in the table below.

[0048] Calibration data statistics table for ball No. 2

[0049]

[0050] The table above shows the differences between the two stress detection devices above and below sphere 2. After processing, a total of 6 sets of functional relationships can be obtained. In actual testing, the measured reading N1n of the stress detection device on sphere 1 is first substituted into the six equations of function 1 to obtain 6 difference data points between the two stress detection devices inside sphere 2 when the water flow velocity in its area is V0-V5. Then, using these 6 data points, a regression equation is constructed between the difference data of the stress detection device on sphere 2 at the reading N1n of the stress detection device on sphere 1 and the water flow velocity in its area. Finally, the difference data of the stress detection device on sphere 2 at this time is substituted into the equation to obtain the water flow velocity in the area where sphere 2 is located.

[0051] S7. Increase the weight of counterweight 16 and measure the data of other test balls. Using the reading range of stress sensor 19 during the calibration of ball n as limit, Nn00-Nn55, select multiple points as calibration points of stress sensor 19. Repeat steps S4 to S6 to obtain the calibration data of test ball n+1.

[0052] It is worth noting that in step S7, when measuring the detection ball n, the mass of the counterweight 16 is the sum of the weight of n-1 detection balls and the mass of the detection cables 7 connecting the n-2 detection balls to the suspension mechanism. Furthermore, after each data collection by the direction sensor, as long as the direction determination is correct, calibration is not required.

[0053] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A water flow rate and flow direction detection device calibration device, characterized by, The utility model relates to a kind of detection ball calibration device, including: Water tank (25), inside is equipped with water (1); First mobile part, slidingly disposed in the water tank (25), the mobile part is equipped with suspension mechanism, the detection cable (7) is hung on the suspension mechanism, and the detection ball (4) to be calibrated is equipped on the detection cable (7); Counterweight (16) is connected to the bottom end of the detection cable (7); Stress sensor (19) is equipped on the detection cable (7), and is equipped above the first mobile part; Second mobile part, equipped on the first mobile part, second mobile part and the detection cable (7) between the counterweight (16) and the stress sensor (19) are slidingly connected, so that the counterweight (16) can be moved under the drive of the second mobile part; The first mobile part includes moving mechanism and drive mechanism (20), the moving mechanism includes detection platform (22), the bottom of the detection platform (22) is equipped with a plurality of gyro wheel (23), the drive mechanism (20) includes winch (15) and is equipped on the power output end of winch (15) traction rope (21), the bottom end of the traction rope (21) is connected with the detection platform (22), so that the winch (15) can drive the detection platform (22) to move; The second mobile part includes drive mechanism (20) and traction mechanism (18), the traction mechanism (18) is connected to the power output end of the drive mechanism (20), the traction mechanism (18) is equipped with limit plate (28) at both ends, the rolling shaft (27) is equipped between the limit plate (28), the rolling shaft (27) is selected v-shaped roller, the detection cable (7) above the counterweight (16) and below the stress sensor (19) is overlapped on the rolling shaft (27); Baffle (17), the baffle (17) is equipped on the top of the detection platform (22), and the baffle (17) is covered in the second mobile part; The top plate of the baffle (17) is equipped with strip-shaped hole, the inside of the baffle is equipped with containing cavity, two sealing assemblies are equipped in the containing cavity, the sealing assembly has two states of contraction and extension, and when each sealing assembly is in the extension state, the length of the sealing assembly is not less than the length of the strip-shaped hole, one end of each sealing assembly is equipped on the side wall of the strip-shaped hole, the other end of each sealing assembly is connected on the same grommet (29), the detection cable (7) is arranged through grommet (29), the top end of each sealing assembly is arranged closely to the top plate, so that the sealing assembly can block the strip-shaped hole; Sealing assembly is folded baffle (30), the folded baffle (30) has no elastic stress.

2. The water flow rate and flow direction detection device calibration device of claim 1, wherein: The first moving part further comprises two pulleys (26), which are arranged in an up-down manner and are located on the same vertical line, the upper pulley (26) is arranged on one side of the winch (15), and the lower pulley (26) is arranged on one side of the detection platform (22), the traction rope (21) passes through the two pulleys (26) in sequence, so that the traction rope (21) forms a "Z" shape, and the horizontal part of the traction rope (21) can remain horizontal, and the vertical part of the traction rope (21) remains vertical.

3. The water flow rate and flow direction detection device calibration device of claim 2, wherein: The top of the detection platform (22) is provided with a lifting mechanism (32), and the flow shield (17) is arranged on the lifting mechanism (32), so that the flow shield (17) can move up and down under the drive of the lifting mechanism (32), and the length of the detection cable (7) between the detection ball (4) and the suspension mechanism is the same as the length of the detection cable (7) between the detection ball (4) and the stress sensor (19).

4. The water flow rate and flow direction detection device calibration device of claim 3, wherein: The inside of the sleeve ring (29) is provided with a water blocking element (33).

5. A method of calibrating a water flow rate and flow direction detection device using the water flow rate and flow direction detection device calibration device according to claim 4, characterized by, Comprise: S1, the detection ball to be detected is labeled from bottom to top, and is recorded as 1, 2, 3…… S2, the No. 1 detection ball is hung on the support, and the detection data is read in a static state in water, the initial stress value is N10, and the direction sensor is not started; S3, the winch (15) is started, the detection platform (22) is gradually accelerated, until a predetermined water flow rate detection upper limit V is reached, a series of data of the stress detection device in the No. 1 detection ball in this process is read and recorded, and a function relationship V=F(N) of stress monitoring device data (N10-N1n) and corresponding water flow rate is arranged; the data of the direction sensor of the No. 1 ball is read at the same time; S4, a plurality of test flow rates are selected, represented as V1, V2, V3, V4……, the same number of points of the No. 1 detection ball data are selected as the calibration points of the stress sensor (19), recorded as N11, N12, N13, N14……, the No. 2 detection ball is hung on the suspension mechanism, and a counterweight equal in weight to the detection ball is hung on the detection cable (7), the readings of the two stress detection devices in the No. 2 detection ball in a static state are N200 and N200 respectively, the difference between the two is ΔN200, the direction sensor is not started, the second moving part is adjusted, the reading of the stress sensor (19) is N11, the readings of the two stress detection devices in the No. 2 detection ball are N201 and N201 respectively, the difference between the two is ΔN201, and the stress difference values ΔN202, ΔN203, ΔN204…… corresponding to the No. 2 detection ball when the readings of the stress sensor (19) are N12, N13, N14…… are read in the same way. S5, start the winch (15) to make the detection platform (22) advance in water at the speed of V1, and adjust the second moving part to make the detection cable (7) below the second detection ball freely suspended below the second detection ball without the influence of the second moving part, read the data N210 and N210 of the two stress detection devices in the second detection ball at this time, and the difference between the two is ΔN210; Keep the moving platform speed V1, adjust the second moving part to make the reading of the stress sensor (19) N11, read the reading of the two stress detection devices in the second detection ball at this time N211 and N211, and the difference between the two is ΔN211, and the same way is used to read the stress difference ΔN212, ΔN213, ΔN214 of the second detection ball when the reading of the stress sensor (19) is N12, N13, N14, and the direction sensor data is read at the same time; S6, respectively at V2, V3, V4, V5 speed, complete data collection and record according to steps S4 and S5, arrange the data to obtain the equation of function 1 group, substitute the reading N1n of the first detection ball into the equation of function 1 group, obtain the difference value data of the multiple stress detection devices of the second detection ball, and then use the data to make the regression equation between the difference value data of the second detection ball at the reading N1n of the first detection ball and the water flow velocity of the water area where it is located, and then substitute the difference value data of the second detection ball into the equation to obtain the water flow velocity of the water area where the detection ball is located. S7, increase the weight of the weight block (16), measure the data of other detection balls, and select multiple points as the calibration points of the stress sensor (19) within the reading range Nn00-Nn55 of the upper stress sensor (19) when n ball is calibrated, repeat the steps of S4 to S6, and the calibration data of the detection ball n+1 can be obtained.

6. The water flow rate and flow direction detection device calibration method of claim 5, wherein: In step S7, when measuring the detection ball n, the mass of the weight block (16) is the sum of the weight of n-1 detection balls and the mass of n-2 detection cables (7) between the detection ball and the suspension mechanism.

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