Evaporation sensor calibrating device and method

Abstract

The invention relates to the technical field of sensor verification, and particularly discloses an evaporation sensor verification device and method.The device comprises a verification table and a control box, a water storage tank, a test box and a water pump communicating the water storage tank with the test box are arranged in the verification table, the water storage tank is provided with a water level gauge, and the top of the water storage tank is provided with a standard evaporator installation base and a tested evaporator installation base; a control circuit board and an electronic leveling instrument are arranged in the control box, and the circuit board is electrically connected with all the components. The method comprises the steps that the standard evaporator emits 80GHz wave beams to measure the liquid level, the water pump controls the water level change, standard and tested instrument data are synchronously collected, and multiple test points are measured and transmitted to the display screen. The problems that an existing device is low in precision, poor in stability and complex in operation are solved. The radar type standard evaporimeter is adopted to measure the liquid level, errors are reduced, the multiple measured evaporimeter installation bases improve the verification efficiency, and the device is suitable for efficient and accurate verification of the evaporation sensor.

Description

Technical Field

[0001] This invention relates to the field of sensor calibration technology, specifically to an evaporation sensor calibration device and method. Background Technology

[0002] Evaporation sensors are key devices for measuring changes in liquid level, and their measurement accuracy directly affects the reliability of related data acquisition and analysis. To ensure the accuracy of evaporation sensors, their performance must be tested using a dedicated calibration device.

[0003] In existing evaporation sensor calibration devices, some use gauge blocks as standards. However, since evaporation sensors often rely on ultrasonic waves to measure liquid levels, the different reflection characteristics of ultrasonic waves on liquid and solid surfaces lead to inconsistent measurement objects, affecting the accuracy of the calibration results. Other devices use laser level gauges as standards, but smooth water surfaces are prone to specular reflection. If the laser angle is off or there are ripples on the water surface, signal jumps can easily occur, requiring an additional float. However, the tension between the float and the liquid surface, as well as its own fluctuations, introduce additional measurement uncertainties. Devices combining optical gratings and mechanically lifted water containers cannot detect height changes caused by water evaporation, making it difficult to meet the requirements for long-term stability testing. Furthermore, existing devices often suffer from complex operation, low calibration efficiency, and inability to simultaneously adapt to multiple sensors. Therefore, there is an urgent need for a high-precision, highly stable, and easy-to-operate evaporation sensor calibration device. Summary of the Invention

[0004] The purpose of this invention is to provide an evaporation sensor calibration device and calibration method, which solves the problems of low measurement accuracy, poor stability and cumbersome operation of existing calibration devices, and achieves efficient and accurate calibration of evaporation sensors.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an evaporation sensor calibration device, comprising a calibration platform and a control box; the calibration platform contains an adjacent water storage tank and a test box, and a water pump connecting the water storage tank and the test box is provided; the water storage tank contains a water level gauge; the top of the calibration platform contains a standard evaporator mounting base and a test evaporator mounting base; the control box contains a control circuit board and an electronic level.

[0006] The control circuit board is electrically connected to the electronic level, water pump, water level gauge, standard evaporator mounting base, and the evaporator mounting base under test.

[0007] Furthermore, the water pump includes a water storage pump and a test pump. The calibration platform has an inlet and outlet on one side. The water storage pump is connected to the water storage tank and the inlet and outlet. The test pump is connected to the water storage tank and the test chamber.

[0008] Furthermore, the side wall of the water storage tank is provided with a water level gauge, the side wall of the test box is provided with a test water level gauge, and the side wall of the calibration table is provided with a hollow observation groove for observing the water level gauge and the test water level gauge.

[0009] Furthermore, the mounting base for the evaporator under test is provided in several parts.

[0010] Furthermore, a power interface is provided on one side of the calibration table.

[0011] Furthermore, a display stand is provided on one side of the calibration table.

[0012] Furthermore, the control box is equipped with a quick-connect plug.

[0013] The present invention also provides a method for calibrating an evaporation sensor, comprising the following steps:

[0014] The standard evaporator emits an 80GHz high-frequency beam to the surface of the liquid being measured, then receives the return signal. It calculates the height of the liquid level by measuring the propagation time of the beam and uses a water pump to control the change in the water level in the storage tank.

[0015] The tested evaporator and the standard evaporator use the same medium for measurement. Data from the tested evaporator and the standard evaporator are collected synchronously. Several different test points are selected for separate measurements, and the data is transmitted to the display screen for operators to judge and analyze.

[0016] The advantages of this invention compared to existing technologies are as follows: This invention uses a radar-type standard evaporator to directly measure the water surface, avoiding the inconsistency problem of measurement objects in gauge block-type standards. Furthermore, compared to laser-type standards, radar waves provide more stable reflected signals when there are ripples or disturbances on the water surface, eliminating the need for additional floats and reducing measurement uncertainty. By controlling the water levels in the storage tank and test chamber with a water pump and combining this with real-time monitoring by a water level gauge, the water level drop caused by evaporation can be replenished promptly, meeting the requirements for long-term stability testing. Multiple mounting bases for the tested evaporators allow for simultaneous calibration of multiple sensors, improving calibration efficiency. The device has a reasonable structural design and is easy to operate. The cooperation between the electronic level and the control circuit board ensures the accuracy and reliability of the calibration process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an evaporation sensor calibration device according to the present invention. Figure 1 .

[0018] Figure 2 This is a schematic diagram of the structure of an evaporation sensor calibration device according to the present invention. Figure 2 .

[0019] Figure 3 This is a front view of an evaporation sensor calibration device according to the present invention.

[0020] Figure 4 This is a left view of an evaporation sensor calibration device according to the present invention.

[0021] Figure 5 This is a schematic diagram of the internal structure of an evaporation sensor calibration device according to the present invention.

[0022] As shown in the figure: 1. Calibration table, 2. Control box, 3. Water storage tank, 4. Test box, 5. Water level gauge, 6. Standard evaporator mounting base, 7. Evaporator under test mounting base, 8. Control circuit board, 9. Electronic level, 10. Water storage pump, 11. Test pump, 12. Inlet and outlet, 13. Water storage level gauge, 14. Test level gauge, 15. Hollow observation slot, 16. Power interface, 17. Monitor bracket, 18. Quick plug. Detailed Implementation

[0023] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential", 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 this 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 limitations on this invention.

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] The following detailed description of an evaporation sensor calibration device and method according to the present invention, with reference to the accompanying drawings, provides further insight.

[0026] Combined with appendix Figure 1-5 This invention will be described in detail below.

[0027] The evaporation sensor calibration device of the present invention includes a calibration platform 1 and a control box 2. The calibration platform 1 is provided with an adjacent water storage tank 3 and a test box 4. A water pump is provided between the water storage tank 3 and the test box 4 to connect the two. The water pump includes a water storage pump 10 and a test pump 11. An inlet and outlet 12 is provided on one side of the calibration platform 1. The water storage pump 10 is connected to the water storage tank 3 and the inlet and outlet 12 to realize the water filling and drainage of the water storage tank 3. The test pump 11 is connected to the water storage tank 3 and the test box 4 to control the water level change of the test box 4.

[0028] The water storage tank 3 is equipped with a water level gauge 5 for real-time monitoring of the water level in the water storage tank 3; the side wall of the water storage tank 3 is equipped with a water level gauge 13, the side wall of the test box 4 is equipped with a test water level gauge 14, and the side wall of the calibration table 1 is equipped with a hollow observation groove 15. Operators can directly observe the readings of the water level gauge 13 and the test water level gauge 14 through the hollow observation groove 15 to help judge the water level status.

[0029] The top of the calibration stand 1 is equipped with a standard evaporator mounting base 6 and a test evaporator mounting base 7. Several test evaporator mounting bases 7 are provided, allowing for the simultaneous installation of multiple test evaporator sensors, enabling synchronous calibration of multiple sensors. A power interface 16 is located on one side of the calibration stand 1 for connecting an external power source to power the device; a display bracket 17 is also located on one side of the calibration stand 1 for mounting a display screen to facilitate the display of calibration data and the operating interface.

[0030] The control box 2 houses a control circuit board 8 and an electronic level 9. The control circuit board 8 is electrically connected to the electronic level 9, water pump, water level gauge 5, standard evaporator mounting base 6, and the evaporator under test mounting base 7, enabling synchronous data acquisition and coordinated control of the equipment. The control box 2 is equipped with a quick-connect plug 18 for easy connection of the device to the standard evaporator, the evaporator under test, and other equipment.

[0031] The present invention also provides a method for calibrating an evaporation sensor, comprising the following steps:

[0032] The standard evaporator emits an 80GHz high-frequency beam to the surface of the liquid being tested and then receives the return signal. The height of the liquid level is calculated by measuring the propagation time of the beam, and the water level in the water tank 3 is controlled by a water pump. The evaporator under test and the standard evaporator use the same medium for measurement. Data from the evaporator under test and the standard evaporator are collected synchronously. Several different test points are selected for separate measurements, and the data is transmitted to the display screen for operators to judge and analyze.

[0033] The specific implementation process of the evaporation sensor calibration device and method of the present invention is as follows:

[0034] Place the device on a flat surface, connect it to an external power source via power interface 16, install a display screen on display bracket 17, connect the standard evaporator and the evaporator under test via quick plug 18, install the standard evaporator on the standard evaporator mounting base 6, and install multiple evaporators under test on the corresponding evaporator mounting base 7.

[0035] The tilt angle of the calibration table 1 is detected by the electronic level 9 in the control box 2. If the tilt angle exceeds the preset range, the position of the calibration table 1 is adjusted until the tilt angle is within the preset range to ensure the levelness of the calibration benchmark.

[0036] External water is pumped into the water storage tank 3 through the inlet / outlet 12 by the water pump 10. The water level gauge 5 monitors the water level in the water storage tank 3 in real time. The operator can observe the reading of the water level gauge 13 through the perforated observation slot 15. After the water level reaches the initial height, the water pump 10 stops working. The water in the water storage tank 3 is pumped into the test tank 4 by the test pump 11. Combined with the reading of the test water level gauge 14, the liquid level in the test tank 4 is adjusted to the initial test height.

[0037] At the initial test height, the device is zeroed to ensure the accuracy of the initial calibration reference.

[0038] The control circuit board 8 controls the standard evaporator to emit an 80GHz high-frequency beam to the liquid surface under test in the test chamber 4, receives the return signal and calculates the liquid level height through the propagation time; it synchronously collects the measurement data of each evaporator under test, and adjusts the liquid level height in the test chamber 4 through the test water pump 11 according to different preset test points, records the data of the standard evaporator and each evaporator under test at each test point, and transmits them to the display screen for display.

[0039] After the verification is completed, the device automatically organizes the data and generates tables. Operators can view the data on the display screen, click "Save Data" to store the data, and also view and analyze historical data through the "Data Processing" function. They can also generate a verification report and copy it to a USB flash drive.

[0040] If a re-verification is required or a configuration error is found, you can click "Restart" to return to the initial steps and re-perform the verification. After the verification is completed, the water in the water storage tank 3 and the test box 4 will be discharged through the inlet and outlet 12 by the water pump 10.

[0041] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. An evaporative sensor calibration device, characterized by: Including the control box and the test bench, the test bench is internally provided with adjacent water storage tank and test box, the water storage tank and test box are provided with water pump connecting both, the water storage tank is internally provided with water level gauge; The top of the test bench is provided with standard evaporation instrument mounting seat and measured evaporation instrument mounting seat; The control box is internally provided with control circuit board and electronic level; The control circuit board and electronic level, water pump, water level gauge, standard evaporation instrument mounting seat and measured evaporation instrument mounting seat are electrically connected.

2. An evaporative sensor calibration device according to claim 1, wherein: The water pump includes water storage upper water pump and test upper water pump, one side of the test bench is provided with water inlet and outlet, the water storage upper water pump is connected with water storage tank and water inlet and outlet; The test upper water pump is connected with water storage tank and test box.

3. An evaporative sensor calibration device according to claim 2, wherein: The side wall of the water storage tank is provided with water storage water level gauge, the side wall of the test box is provided with test water level gauge, and the side wall of the test bench is provided with hollow observation groove for observing water storage water level gauge and test water level gauge.

4. An evaporative sensor calibration device according to claim 3, wherein: The measured evaporation instrument mounting seat is provided with a plurality of.

5. An evaporative sensor calibration device according to claim 1, wherein: One side of the test bench is provided with power interface.

6. An evaporative sensor calibration device according to claim 1, wherein: One side of the test bench is provided with display support.

7. An evaporative sensor calibration device according to claim 1, wherein: The control box is provided with quick plug.

8. An evaporation sensor calibration method characterized by, Including the following steps: The standard evaporation instrument emits 80GHz high-frequency beam to the measured liquid surface, then receives its return signal, measures the propagation time of the beam to calculate the height of the liquid level, and uses the water pump to control the water level change of the water storage tank; The measured evaporation instrument and the standard evaporation instrument use the same medium for measurement, and the data of the measured evaporation instrument and the standard evaporation instrument are collected synchronously, several different test points are selected for measurement, and the data is transmitted to the display screen for the operator to judge and analyze.

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