Water level gauge detection and calibration device and method based on magnetic navigation technology

Abstract

The invention belongs to the field of water level gauge detection, and provides a water level gauge detection and calibration device and method based on a magnetic navigation technology, and the device comprises a bottom surface base, a lifting mechanism disposed in the bottom surface base, and a detection platform fixed on the lifting mechanism. A water level gauge and a laser range finder are fixed at different positions on the detection platform; a lifting base is fixed in the lifting mechanism, sliding rails are fixed to the two opposite sides of the lifting base, and the sliding rails on the two sides are in sliding connection with a lifting support located in the middle of the lifting base through sliding blocks. A detection platform is fixed to the end, away from the lifting base, of the lifting support. Driving mechanisms are fixed to the two sides of the middle of the outer bottom of the bottom face base respectively, a main controller is fixed in the bottom face base, and the main controller is connected with the driving mechanisms to drive the detection and calibration device to move. In the inspection and calibration process, the position selection of the instantaneous value calibration point is accurate and fixed, and the measurement precision is high.

Description

Technical Field

[0001] The invention belongs to the technical field of water level gauge detection, and in particular relates to a water level gauge detection and calibration device and method based on magnetic navigation technology. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] At present, most of the water level meter detection and calibration adopts the methods of manual assisted measurement and calibration and semi-automatic assisted measurement and calibration. Manual assisted measurement and calibration uses the water level meter calibration station to calibrate the parameters of the water level meter at multiple locations. When manually assisted measurement and calibration at multiple locations, the selected instantaneous value calibration is different, resulting in inconsistent calibration accuracy for each device. In this process, human cumulative errors are prone to occur, resulting in large deviations in the calibration results, affecting the measurement accuracy of the water level meter. The semi-automatic assisted measurement and calibration method calibrates the parameters of the water level meter at multiple locations through the reciprocating motion of the test trolley set on the double track; the semi-automatic assisted measurement and calibration method cannot finally display the detection and calibration results on the PC side, and it is necessary to manually import the calibration data into the software to realize the calibration of the water level meter. Similarly, it is necessary to manually judge whether the detection data and the data collected by the calibration device meet the accuracy requirements; in addition, the test trolley device in the form of a double track occupies space and is inconvenient to use. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a water level meter detection and calibration device and method based on magnetic navigation technology. The present invention can automatically detect and calibrate the water level meter. The position of the instantaneous value calibration point is accurately and fixed during the inspection and calibration process, which reduces human measurement errors and improves measurement accuracy, and can ensure that the factory equipment meets the product usage requirements.

[0005] According to some embodiments, a first solution of the present invention provides a water level gauge detection and calibration device based on magnetic navigation technology, which adopts the following technical solution:

[0006] A water level gauge detection and calibration device based on magnetic navigation technology comprises a bottom surface base, a lifting mechanism arranged in the bottom surface base, and a detection platform fixed on the lifting mechanism; a water level gauge and a laser rangefinder are fixed at different positions on the detection platform;

[0007] A lifting base is fixed in the lifting mechanism, and slide rails are fixed on opposite sides of the lifting base, and the slide rails on both sides are slidably connected to a lifting bracket located in the middle of the lifting base through a slider; a detection platform is fixed on one end of the lifting bracket away from the lifting base;

[0008] Driving mechanisms are fixed on both sides of the middle of the outer bottom of the bottom base respectively, and a main controller is fixed inside the bottom base. The main controller is connected to the driving mechanism to drive the detection and calibration device to move.

[0009] Furthermore, the lifting bracket and the slider are fixed on a lifting plate, the lifting plate is connected to a ball screw, and the ball screw is parallel to the lifting bracket;

[0010] A screw drive mechanism is fixed on the side of the ball screw away from the lifting plate, and the screw drive mechanism is fixed on the slide rail through a fixing frame.

[0011] Furthermore, the bottom base is a box structure with an opening at the top;

[0012] A magnetic navigation sensor is fixed on the forward direction side and the backward direction side of the outer bottom of the bottom base respectively; and an obstacle detection sensor and an operation indicator light are fixed on the forward direction side and the backward direction side of the bottom base respectively;

[0013] The magnetic navigation sensor, obstacle detection sensor and operation indicator light are all connected to the main controller.

[0014] Furthermore, the main controller is also connected to a voice announcer, a relay, a motor driver and a power supply module;

[0015] The voice announcer, relay, motor driver and power supply module are laid on the bottom of the bottom base.

[0016] Furthermore, the driving mechanism includes a damping mechanism and a driving motor fixed on both sides of the middle of the outer bottom of the bottom base; the output shaft of the driving motor is connected to the driving wheel;

[0017] Driven wheels are fixed at four corners of the bottom outside the bottom base.

[0018] Furthermore, a cover is provided on the bottom base, and a lifting through hole adapted to the lifting mechanism is provided in the middle of the cover; and an antenna and an emergency stop button are also provided on the cover;

[0019] A protective shell is also arranged on the cover. The protective shell is a box structure with an opening at the bottom. A detection through hole matching the detection platform is opened on the top of the protective shell.

[0020] Furthermore, a display touch screen is arranged on one side of the protective shell, and a box door is opened on the other side of the protective shell opposite to the display touch screen.

[0021] Furthermore, a wired charging interface is fixed on one side surface outside the bottom base, and the wired charging interface is connected to the main controller and the power supply module;

[0022] A start / stop button and a program configuration interface are fixed on the other side surface opposite to the bottom base, and the program configuration interface is connected to the main controller.

[0023] Furthermore, the device also includes a magnetic strip laid on the ground in the calibration site.

[0024] According to some embodiments, a second solution of the present invention provides a water level gauge detection and calibration method based on magnetic navigation technology, which adopts the following technical solution:

[0025] A water level gauge detection and calibration method based on magnetic navigation technology, comprising:

[0026] Open the box door and adjust the detection platform equipped with the water level meter and laser rangefinder to the height required by the water level meter through the lifting mechanism;

[0027] After power is turned on, the detection and calibration device moves forward along the magnetic strip laid on the ground at the calibrated origin through the main controller. It pauses for a set time every time it reaches a pause point. The water level meter and laser rangefinder collect data at each pause point and upload the collected raw data to the host computer.

[0028] The upper computer sends the calibrated data compensation to the water level meter, and the water level meter completes the calibration work;

[0029] The inspection and calibration device moves forward at the origin of the calibration magnetic strip. The inspection and calibration device pauses for a set time at each pause point. The data collected by the water level meter and the laser rangefinder at the pause point are fed back to the host computer. The host computer compares the measurement value of the laser rangefinder with the measurement value of the water level meter. If the measurement value error is less than the set threshold, the requirement is met and the measurement is reported as normal. If the measurement point error does not meet the requirement, the point is displayed as abnormal and the measurement abnormality is reported.

[0030] Collect the measurement data of the set number of pause points. If all the pause points are normal, the measurement is successful and the whole measurement and calibration process is completed. If there are abnormal pause points, the measurement failure is reported, and the abnormal pause points are inspected and repaired, and then re-measured and calibrated until the measurement is successful.

[0031] After the test is completed, the host computer generates a test report and prints the test data and results for storage.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The present invention adopts magnetic navigation control technology, which has strong stability, long service life and high precision, and ensures safe operation in various environments; the magnetic navigation sensor can ensure the fixed-point parking detection of the device through the main controller, ensure that the central axis of the device is flush with the magnetic strip, and complete the detection and calibration work; the magnetic navigation technology is used to solve the problem of occupied space, and it is easy and flexible to use; the fully automatic measurement and calibration can transmit the collected data and analysis results to the PC in real time, reducing manpower and material resources.

[0034] The position of the instantaneous value calibration point in the inspection and calibration process of the present invention is accurately and fixedly selected, and the measurement accuracy is high, which can ensure that the factory equipment meets the use requirements of the product; the magnetic navigation technology is simple in structure, flexible and convenient, occupies little space, and has low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0036] Figure 1 The invention is a three-dimensional water level gauge detection and calibration device based on magnetic navigation technology. Figure 1 ;

[0037] Figure 2 The invention is a three-dimensional water level gauge detection and calibration device based on magnetic navigation technology. Figure 2 ;

[0038] Figure 3 This is a front view of a water level gauge detection and calibration device based on magnetic navigation technology in an embodiment of the present invention;

[0039] Figure 4 is a top view of a water level gauge detection and calibration device based on magnetic navigation technology in an embodiment of the present invention;

[0040] Figure 5 It is a bottom view of a water level gauge detection and calibration device based on magnetic navigation technology in an embodiment of the present invention;

[0041] Figure 6 It is a left view of a water level gauge detection and calibration device based on magnetic navigation technology in an embodiment of the present invention;

[0042] Figure 7 It is a right view of a water level gauge detection and calibration device based on magnetic navigation technology in an embodiment of the present invention;

[0043] Figure 8 This is a rear view of a water level gauge detection and calibration device based on magnetic navigation technology in an embodiment of the present invention;

[0044] Fig. 9It is a schematic diagram of the bottom surface of the base without the lifting mechanism in the embodiment of the present invention;

[0045] Fig.10 is a schematic diagram of a bottom base including a lifting mechanism in an embodiment of the present invention;

[0046] Fig.11 This is a flow chart of water level meter detection and calibration based on magnetic navigation technology in an embodiment of the present invention;

[0047] In the figure:

[0048] 1-display touch screen; 2-operation indicator light; 3-obstacle detection sensor; 4-magnetic navigation sensor; 5-water level meter; 6-laser rangefinder; 7-detection platform; 8-antenna; 9-emergency stop button; 10-driven wheel; 11-shock absorption mechanism; 12-driving wheel; 13-wired charging interface; 14-start and stop button; 15-program configuration interface; 16-box door; 17-step-down module; 18-relay; 19-voice announcer; 20-main controller; 21-motor driver; 22-power supply module; 23-screw drive mechanism; 24-slide rail; 25-slider; 26-lifting bracket; 27-ball screw. DETAILED DESCRIPTION

[0049] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0050] It should be noted that the following detailed descriptions are all illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0051] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0052] In the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0053] Embodiment 1

[0054] like Figure 1 , Figure 2 , Figure 3 as well as Figure 4As shown, this embodiment provides a water level gauge detection and calibration device based on magnetic navigation technology, including a bottom surface base, a lifting mechanism arranged in the bottom surface base, and a detection platform 7 fixed on the lifting mechanism; a water level gauge 5 and a laser rangefinder 6 are fixed at different positions on the detection platform 7;

[0055] like Fig. 9 and Fig.10 As shown, a lifting base is fixed in the lifting mechanism, and slide rails 24 are fixed on opposite sides of the lifting base. The slide rails 24 on both sides are slidably connected to a lifting bracket 26 located in the middle of the lifting base through a slider 25; the end of the lifting bracket 26 away from the lifting base is fixed with a detection platform 7;

[0056] Driving mechanisms are fixed on both sides of the middle of the outer bottom of the bottom base, and a main controller 20 is fixed inside the bottom base. The main controller 20 is connected to the driving mechanism to drive the detection and calibration device to move.

[0057] The lifting bracket 26 and the slider 25 are fixed on the lifting plate, the lifting plate is connected to the ball screw 27, and the ball screw 27 is parallel to the lifting bracket 26;

[0058] A screw drive mechanism 23 is fixed to the side of the ball screw 27 away from the lifting plate, and the screw drive mechanism 23 is fixed to the slide rail 24 through a fixing frame. It can be understood that the fixing frame is a frame structure adapted to the size of the lifting mechanism, which is sleeved on the lifting mechanism and fixedly connected to the slide rails on both sides.

[0059] The lifting bracket 26 in the middle of the lifting mechanism slides up and down through two left and right sliders 25 and the slide rails 24 arranged on the left and right sides. The top of the lifting bracket 26 is fixedly connected with the detection platform 7; the bottom of the lifting bracket 26 is fixedly connected with a lifting plate, and the lifting plate is rotatably connected to the end of the ball screw 27 close to the bottom base through a sliding sleeve, and the screw drive mechanism 23 is connected to the end of the ball screw 27 away from the lifting plate; the screw drive mechanism 23 can adopt a hand crank handle, and the hand crank handle is connected to the ball screw 27 through a bevel gear; or the screw drive mechanism 23 can adopt a motor, and the motor is connected to the ball screw 27 through a coupling to drive the ball screw 27 to rotate. The screw drive mechanism 23 includes but is not limited to the above two forms.

[0060] Driven by the screw drive mechanism 23, the gears mesh and rotate, driving the ball screw 27 to rotate, and the sliding sleeve arranged on the ball screw 27 drives the lifting plate to move upward to reach the required height of the water level gauge 5 for detection.

[0061] like Figure 3As shown, the bottom base is a box structure with an open top; magnetic navigation sensors 4 are respectively fixed on the forward direction side and the backward direction side of the bottom of the bottom base, which are used to detect that the calibration device runs along the magnetic strip; and obstacle detection sensors 3 are respectively fixed on the forward direction side and the backward direction side of the bottom base, which are used to detect whether there are obstacles; and an operation indicator light 2 is used to indicate during the operation;

[0062] The magnetic navigation sensor 4 , the obstacle detection sensor 3 and the operation indicator light 2 are all connected to the main controller 20 .

[0063] like Fig. 9 As shown, the main controller 20 is also connected to a voice announcer 19, a relay 18, a motor driver 21 and a power supply module 22;

[0064] The voice announcer 19, relay 18, motor driver 21 and power supply module 22 are laid on the bottom of the bottom base;

[0065] The detection and calibration device also includes a step-down module 17 for voltage conversion between 48V to 24V and 48V to 12V; a circuit breaker for power control in the system; a main controller 20 for control, collection and transmission of the entire system; and a motor driver 21 for electrically controlling the operation of the servo motor.

[0066] like Figure 5 As shown, the driving mechanism includes a damping mechanism 11 and a driving motor fixed on both sides of the middle of the bottom outside the bottom base; the output shaft of the driving motor is connected to the driving wheel 12;

[0067] A driven wheel 10 is fixed to each of the four corners of the bottom outside the bottom base.

[0068] like Figure 5 and Fig. 9 As shown, two sets of driving mechanisms are arranged at the outer bottom of the bottom base, the driving motor is connected to the driving wheel 12, and the driving motor is controlled by the motor driver 21 and the main controller 20 to move along the magnetic navigation route. This drive is a differential drive, and the travel speeds on the left and right sides are changed by the main controller 20 to perform forward, backward, turning and other operations; the shock absorbing mechanism 11 in the driving device can adjust the height of the driving wheel 12 and the driven wheel 10 according to use, to ensure the friction between the driving wheel 12 and the ground, so as to drive the vehicle normally; at the same time, four driven wheels 10 are arranged at the bottom to assist in supporting the movement of the detection and calibration device.

[0069] like Figure 4 , Figure 6 and Fig. 9As shown, a cover is provided on the bottom base, and a lifting through hole adapted to the lifting mechanism is provided in the middle of the cover; and an antenna 8 and an emergency stop button 9 are also provided on the cover, and the emergency stop button 9 is used for braking in an emergency, and controls the power supply of the entire system. After the power is cut off, the system is powered off and the equipment stops; the antenna 8 is used for wireless communication and remote data transmission;

[0070] A protective shell is also provided on the cover. The protective shell is a box structure with an opening at the bottom. A detection through hole matched with the detection platform 7 is opened on the top of the protective shell.

[0071] like Figure 1 and Figure 8 A display touch screen 1 is provided on one side of the protective shell, which can query / display the collected data locally;

[0072] A door 16 is provided on the other side of the protective shell opposite to the display touch screen 1. When the door is opened, it is used to adjust the height of the lifting mechanism to test the water level meter 5. When the detection and calibration device is not used for a long time, the lifting mechanism is adjusted to the original position.

[0073] A wired charging interface 13 is fixed on one side surface outside the bottom base, and the wired charging interface 13 is connected to the main controller 20 and the power supply module 22;

[0074] like Figure 7 and Fig. 9 As shown, a start-stop button 14 and a program configuration interface 15 (used for program configuration of the main controller 20 of the detection and calibration device) are fixed on the other side surface opposite to the bottom base. The program configuration interface 15 is connected to the main controller 20, and the start-stop button 14 is used to control the start and stop of the detection and calibration device.

[0075] The device also includes a magnetic strip laid on the ground in the calibration site.

[0076] In this embodiment, the software part includes the writing of the host computer software and the controller program. The controller program is divided into a communication program, a motion unit control program, a test unit control program, etc.; the hardware part includes a main controller 20, a communication unit, a motion unit, a test unit and a power supply module 22.

[0077] A complete magnetic navigation system is composed of host computer software, main controller 20, motion unit (magnetic navigation sensor 4, obstacle detection sensor 3, driving mechanism), test unit (laser rangefinder 6, lifting mechanism, water level meter 5), communication unit (human-computer interaction display touch screen 1, operation buttons, wireless transmission), etc.

[0078] Power supply module 22: automatic charging station (contact type), also supports wired charging.

[0079] The main controller 20 is used as the main control chip of the device to control the start and stop movement and communication functions of the device. It has a voice broadcast interface, a distance sensor interface, a magnetic navigation sensor interface, a measured water level meter 5 data interface, and an obstacle detection sensor interface.

[0080] The motion unit is driven by a servo motor, which is very accurate in controlling speed and position accuracy, and can convert voltage signals into torque and speed to drive the controlled object. The rotor speed of the servo motor is controlled by the input signal and can respond quickly. In the automatic control system, it is used as an actuator and has the characteristics of small electromechanical time constant and high linearity. It can convert the received electrical signal into angular displacement or angular velocity output on the motor shaft. It is equipped with a magnetic navigation sensor 4, an obstacle detection sensor 3, etc. for auxiliary movement.

[0081] Test unit: A water level meter 5 and a laser rangefinder 6 can be installed on the detection platform 7 of the test unit. The device can be driven to start and stop at distances of 0.3m, 0.5m, etc. The laser rangefinder is irradiated onto the wall to feedback the accurate distance, and then the measuring distance of the water level meter 5 is calibrated.

[0082] Power supply module 22: The power supply module 22 of the main controller 20 uses a lithium battery power supply for input, and the circuit is designed in a diode isolation manner.

[0083] The device is powered by a 48V lithium battery, which steps down the 48V to 12V and 24V to power other parts of the device.

[0084] Contact charging: Contact charging means that all charging circuits need to use cables and charging contacts to connect the load to the power supply module 22.

[0085] Embodiment 2

[0086] like Fig.11 As shown, this embodiment provides a water level gauge detection and calibration method based on magnetic navigation technology, including:

[0087] Open the box door and adjust the detection platform equipped with the water level meter and laser rangefinder to the height required by the water level meter through the lifting mechanism;

[0088] After power is turned on, the detection and calibration device moves forward along the magnetic strip laid on the ground at the calibrated origin through the main controller. It pauses for a set time every time it reaches a pause point. The water level meter and laser rangefinder collect data at each pause point and upload the collected raw data to the host computer.

[0089] The upper computer sends the calibrated data compensation to the water level meter, and the water level meter completes the calibration work;

[0090] The inspection and calibration device moves forward at the origin of the calibration magnetic strip. The inspection and calibration device pauses for a set time at each pause point. The data collected by the water level meter and the laser rangefinder at the pause point are fed back to the host computer. The host computer compares the measurement value of the laser rangefinder with the measurement value of the water level meter. If the measurement value error is less than the set threshold, the requirement is met and the measurement is reported as normal. If the measurement point error does not meet the requirement, the point is displayed as abnormal and the measurement abnormality is reported.

[0091] Collect the measurement data of the set number of pause points. If all the pause points are normal, the measurement is successful and the whole measurement and calibration process is completed. If there are abnormal pause points, the measurement failure is reported, and the abnormal pause points are inspected and repaired, and then re-measured and calibrated until the measurement is successful.

[0092] After the test is completed, the host computer generates a test report and prints the test data and results for storage.

[0093] In a specific embodiment, the working method of the water level gauge detection and calibration device based on magnetic navigation technology includes:

[0094] ① Water level meter installation: Fix the water level meter to the detection platform, and adjust the detection platform to the height required by the water level meter through the lifting mechanism;

[0095] ② Original data acquisition: After the system is powered on, the detection and calibration device moves forward along the magnetic strip laid on the ground at the calibrated origin through the controller. The detection and calibration device pauses for 15 seconds every time it moves 0.3 meters forward. The water level meter and laser rangefinder collect data at each pause point and upload the original data to the host computer;

[0096] ③ Water level meter calibration: The host computer sends the calibrated data compensation to the water level meter, and the water level meter completes the calibration work;

[0097] ④ Water level meter inspection: The inspection and calibration device moves forward at the origin of the calibration magnetic strip. The inspection and calibration device pauses for 15 seconds every time it moves forward 0.3 meters. The collected data of the water level meter and the laser rangefinder are fed back to the host computer. The host computer compares the measured value of the laser rangefinder with the measured value of the water level meter. If the measurement value error is ≤±3mm, it meets the requirements. The voice announcer announces that the measurement is normal. When the measurement point error does not meet the requirements, the pause point is displayed as abnormal, and the voice announcer announces that the measurement is abnormal; collect the measurement data of 30 pause points. If all the pause points are normal, the voice announcer announces that the measurement is successful, and the entire measurement and calibration process ends; if there are abnormal pause points, the voice announcer announces that the measurement failed, and the abnormal pause points and normal points are inspected and repaired, and then re-measured and calibrated until the measurement is successful;

[0098] ⑤After the final test is completed, the host computer generates a test report and prints the test data and results for storage.

[0099] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A water level gauge detection and calibration device based on magnetic navigation technology, characterized in that: It comprises a bottom surface base, a lifting mechanism arranged in the bottom surface base, and a detection platform fixed on the lifting mechanism; a water level meter and a laser rangefinder are fixed at different positions on the detection platform; A lifting base is fixed in the lifting mechanism, and slide rails are fixed on opposite sides of the lifting base, and the slide rails on both sides are slidably connected to a lifting bracket located in the middle of the lifting base through a slider; a detection platform is fixed on one end of the lifting bracket away from the lifting base; Driving mechanisms are fixed on both sides of the middle of the outer bottom of the bottom base respectively, and a main controller is fixed inside the bottom base. The main controller is connected to the driving mechanism to drive the detection and calibration device to move.

2. A water level gauge detection and calibration device based on magnetic navigation technology as claimed in claim 1, characterized in that: The lifting bracket and the slider are fixed on the lifting plate, the lifting plate is connected to the ball screw, and the ball screw is parallel to the lifting bracket; A screw drive mechanism is fixed on the side of the ball screw away from the lifting plate, and the screw drive mechanism is fixed on the slide rail through a fixing frame.

3. A water level gauge detection and calibration device based on magnetic navigation technology as claimed in claim 1, characterized in that: The bottom surface base is a box structure with an opening at the top; A magnetic navigation sensor is fixed on the forward direction side and the backward direction side of the outer bottom of the bottom base respectively; and an obstacle detection sensor and an operation indicator light are fixed on the forward direction side and the backward direction side of the bottom base respectively; The magnetic navigation sensor, obstacle detection sensor and operation indicator light are all connected to the main controller.

4. A water level gauge detection and calibration device based on magnetic navigation technology as claimed in claim 1, characterized in that: The main controller is also connected to a voice announcer, a relay, a motor driver and a power supply module; The voice announcer, relay, motor driver and power supply module are laid on the bottom of the bottom base.

5. The water level gauge detection and calibration device based on magnetic navigation technology as claimed in claim 1, characterized in that: The driving mechanism comprises a damping mechanism and a driving motor fixed on both sides of the middle of the bottom outside the bottom base; the output shaft of the driving motor is connected to the driving wheel; Driven wheels are fixed at four corners of the bottom outside the bottom base.

6. A water level gauge detection and calibration device based on magnetic navigation technology as claimed in claim 1, characterized in that: A cover is provided on the bottom base, and a lifting through hole adapted to the lifting mechanism is provided in the middle of the cover; and an antenna and an emergency stop button are also provided on the cover; A protective shell is also arranged on the cover. The protective shell is a box structure with an opening at the bottom. A detection through hole matching the detection platform is opened on the top of the protective shell.

7. A water level gauge detection and calibration device based on magnetic navigation technology as claimed in claim 6, characterized in that: A display touch screen is arranged on one side of the protective shell, and a box door is opened on the other side of the protective shell opposite to the display touch screen.

8. The water level gauge detection and calibration device based on magnetic navigation technology as claimed in claim 1, characterized in that: A wired charging interface is fixed on one side surface outside the bottom base, and the wired charging interface is connected to the main controller and the power supply module; A start / stop button and a program configuration interface are fixed on the other side surface opposite to the bottom base, and the program configuration interface is connected to the main controller.

9. The water level gauge detection and calibration device based on magnetic navigation technology as claimed in claim 1, characterized in that: It also includes magnetic strips laid on the ground within the calibration site.

10. A water level gauge detection and calibration method based on magnetic navigation technology, characterized in that: include: Open the box door and adjust the detection platform equipped with the water level meter and laser rangefinder to the height required by the water level meter through the lifting mechanism; After power is turned on, the detection and calibration device moves forward along the magnetic strip laid on the ground at the calibrated origin through the main controller. It pauses for a set time every time it reaches a pause point. The water level meter and laser rangefinder collect data at each pause point and upload the collected raw data to the host computer. The upper computer sends the calibrated data compensation to the water level meter, and the water level meter completes the calibration work; The inspection and calibration device moves forward at the origin of the calibration magnetic strip. The inspection and calibration device pauses for a set time at each pause point. The data collected by the water level meter and the laser rangefinder at the pause point are fed back to the host computer. The host computer compares the measurement value of the laser rangefinder with the measurement value of the water level meter. If the measurement value error is less than the set threshold, the requirement is met and the measurement is reported as normal. If the measurement point error does not meet the requirement, the point is displayed as abnormal and the measurement abnormality is reported. Collect the measurement data of the set number of pause points. If all the pause points are normal, the measurement is successful and the whole measurement and calibration process is completed. If there are abnormal pause points, the measurement failure is reported, and the abnormal pause points are inspected and repaired, and then re-measured and calibrated until the measurement is successful. After the test is completed, the host computer generates a test report and prints the test data and results for storage.

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