CN219737815U - An automatic calibration device for ultrasonic evaporation sensors in weather stations - Google Patents

Abstract

An automatic calibration device for an ultrasonic evaporation sensor of a weather station relates to the technical field of calibration of ultrasonic evaporation sensors of the weather station, and solves the problems that human factors influence the calibration process of the ultrasonic evaporation sensor of the weather station in the prior art, an automatic calibration function cannot be realized, and the like. The automatic calibration device comprises a water storage tank body, a water suction and drainage unit, a horizontal bubble, a test tank body, a control and display unit, a tested sensor mounting cylinder, a etalon mounting cylinder and an ultrasonic etalon. The water sucking and draining unit is controlled by the control and display unit to inject water or drain water into the test box body to adjust the liquid level height, and after the set calibration point is stable, the numerical values of the ultrasonic standard device and the ultrasonic evaporation sensor to be tested are read and displayed, and the error value is obtained through calculation. The device simple structure, with low costs have realized the automation of weather station ultrasonic wave evaporation sensor calibration, have improved calibration work efficiency.

Description

An automatic calibration device for ultrasonic evaporation sensors in weather stations

Technical field

The utility model relates to the technical field of calibration of ultrasonic evaporation sensors in weather stations, and in particular to an automatic calibration device for ultrasonic evaporation sensors in weather stations.

Background technique

With the rapid development of the meteorological industry, ultrasonic evaporation sensors have replaced manual observations and are widely used in automatic evaporation observations at automatic weather stations.

Currently, ultrasonic evaporation sensors are calibrated by manually using standard gauge blocks to measure each calibration point. This method is cumbersome and highly affected by human factors, and the data quality needs to be improved.

Therefore, it is very necessary to study an automatic calibration device for ultrasonic evaporation sensors.

Utility model content

In order to reduce the influence of human factors on the calibration process of the ultrasonic evaporation sensor of the weather station and realize the automation of the calibration process, the utility model provides an automatic calibration device of the ultrasonic evaporation sensor of the weather station.

An automatic calibration device for an ultrasonic evaporation sensor in a weather station. The calibration device includes a water storage tank, a suction and drainage unit, a level bubble, a test box, a control and display unit and an ultrasonic standard;

The suction and drainage unit is installed on the water storage tank and connected with the test box;

The test box includes a test box, and a mounting tube for the sensor under test and a standard device installation tube installed on the upper part of the test box; the sensor installation tube under test and the standard device installation tube are connected to the test box body and the three of them are connected to the test box body. communicate;

The ultrasonic standard is installed on the standard installation cylinder, and the ultrasonic evaporation sensor under test is installed on the sensor installation cylinder;

The horizontal bubble is fixed on the upper part of the test box;

The control and display unit is fixed on the test box.

Further, the suction and drainage unit is composed of a water pump and a water pipe. The water pump is fixed on the upper part of the water storage tank, and the two pipes of the water pipe are connected to the water pump and the test box respectively.

Further, the water storage tank includes a water storage tank body and a water filling port installed on the water storage tank body.

Further, the mounting tube of the sensor under test and the mounting tube of the standard instrument are perpendicular to the surface of the test box.

Furthermore, the mounting tube of the sensor under test and the standard instrument mounting tube are made of acrylic transparent glass tubes, and the transparent glass tubes are engraved with scales.

Further, it also includes a gauze, which is installed inside the test box and located at the connection between the test box and the suction and drainage unit.

Further, the gauze is made of stainless steel gauze.

Beneficial effects of this utility model:

The automatic calibration device described in the utility model is suitable for all types of ultrasonic evaporation sensors in existing automatic weather stations.

The calibration device of the utility model can realize the calibration of the ultrasonic evaporation sensor of the weather station conveniently and efficiently. The device has a simple structure and low cost, realizes the automation of the calibration of the ultrasonic evaporation sensor of the weather station, and is of great significance to improving the calibration efficiency of the weather station.

Description of the drawings

Figure 1 is a schematic structural diagram of an automatic calibration device for an ultrasonic evaporation sensor in a weather station according to the present utility model.

In the picture, 1. Water storage tank, 1-1. Water storage tank body, 1-2. Water injection port, 2. Suction and drainage unit, 2-1. Water pump, 2-2. Water pipe, 3. Level bubble, 4. Test Box, 4-1. Test box, 4-2. Installation tube of the sensor under test, 4-3. Installation tube of the standard device, 5. Control and display unit, 6. Ultrasonic standard device, 7. Gauze.

Detailed ways

This embodiment will be described with reference to Figure 1, an automatic calibration device for an ultrasonic evaporation sensor in a weather station. The device performs calibration by measuring the height of the water level in the test box using the ultrasonic evaporation sensor under test and an ultrasonic standard. It can be widely used in ultrasonic weather station applications. Evaporation sensor calibration is in progress.

As shown in Figure 1, the device includes a water storage tank 1, a suction and drainage unit 2, a level bubble 3, a test box 4, a control and display unit 5, an ultrasonic standard 6 and a gauze 7.

The water storage tank 1 includes a water storage tank body 1-1 and a water injection port 1-2.

The suction and drainage unit 2 includes a water pump 2-1 and a water pipe 2-2, which are fixed on the water storage tank 1. The water pump 2-1 is fixed on the upper part of the water storage tank 1. The two pipes of the water pipe 2-2 are connected to the water pump 2-2 respectively. 1 is connected to the test box 4-1.

The test box 4 includes a test box 4-1, and a tested sensor mounting tube 4-2 and a standard device mounting tube 4-3 installed on the upper part of the test box 4-1; the tested sensor mounting tube 4-2. The standard installation barrel 4-3 is vertically connected to the surface of the test box 4-1 and the three are connected;

The horizontal bubble 3 is fixed on the test box 4-1 to ensure that the automatic calibration device is relatively horizontal during the calibration process.

The ultrasonic standard 6 is installed on the standard installation cylinder 4-3, and the ultrasonic evaporation sensor under test is installed on the sensor installation cylinder 4-2.

The ultrasonic standard 6, water pump 2-1 and the measured ultrasonic evaporation sensor are electrically connected to the control and display unit;

The control and display unit 5 is fixed on the test box 4-1 and is used to control the water flow rate and length of the water pump 2-1 and further control the water volume of the test box 4, thereby adjusting the measured sensor installation barrel 4-2 and the standard The water level height of the device installation barrel is 4-3. And display the measured values of the tested ultrasonic evaporation sensor and ultrasonic standard 6.

In this embodiment, a double-sided stainless steel gauze 7 is installed on the connecting side of the test box 4-1 and the suction and drainage unit 2 to reduce the impact of water surface fluctuations caused by the water suction and drainage unit 2 injecting water into the test box 4.

In this embodiment, the measured sensor installation tube 4-2 and the standard instrument installation tube 4-3 are made of acrylic transparent glass tubes with scales engraved on them to facilitate real-time observation of the water level.

The working principle of the automatic calibration device described in this embodiment is: first, fill the water storage tank 1-1 with distilled water through the water filling port 1-2 of the water storage tank; then, install the ultrasonic evaporation sensor under test on the sensor under test On the installation cylinder 4-2, the data transmission line is connected to the control and display unit 5; adjust the calibration device to make it relatively horizontal; finally, perform calibration work, control and The display unit 5 controls the water pump 2-1 to inject water or drain water into the test box 4 to adjust the liquid level. When the set calibration point is stabilized, the values of the displayed ultrasonic standard and the measured ultrasonic evaporation sensor are read, and each water level is completed point by point. measurement, and displays the measurement value and error at the same time.

In this embodiment, the control and display unit 5 uses the TK series human-machine interface of Weiluntong Technology Company, which can control the suction and drainage unit 2 and calculate and display the error between the measured sensor and the standard. The ultrasonic standard 6 adopts Microsonic's vnp series, which can be flexibly disassembled to facilitate traceability of measurement values.

The technical features of the above-described embodiments can be combined in any way. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, All should be considered to be within the scope of this manual.

The above-mentioned embodiments only express several implementation modes of the present invention. The descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present utility model, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the utility model patent should be determined by the appended claims.

Claims (7)

1. Automatic calibrating device of weather station ultrasonic wave evaporation sensor, characterized by: the calibrating device comprises a water storage tank (1), a water sucking and draining unit (2), a horizontal bubble (3), a test box (4), a control and display unit (5) and an ultrasonic standard device (6);

the water sucking and draining unit (2) is arranged on the water storage tank (1) and is communicated with the test tank (4);

the test box (4) comprises a test box body (4-1), and a tested sensor mounting cylinder (4-2) and a standard device mounting cylinder (4-3) which are arranged at the upper part of the test box body (4-1); the tested sensor mounting cylinder (4-2) and the standard device mounting cylinder (4-3) are connected with the test box body (4-1) and communicated with each other;

the ultrasonic etalon (6) is arranged on the etalon mounting cylinder (4-3), and the ultrasonic evaporation sensor to be tested is arranged on the sensor mounting cylinder (4-2);

the horizontal bubble (3) is fixed at the upper part of the test box body (4-1);

the control and display unit (5) is fixed on the test box body (4-1).

2. The automatic calibration device for ultrasonic evaporation sensors of a weather station according to claim 1, wherein: the water sucking and draining unit consists of a water pump (2-1) and a water pipe (2-2), wherein the water pump (2-1) is fixed on the upper part of the water storage tank (1), and two pipes of the water pipe (2-2) are respectively connected with the water pump (2-1) and the test box body (4-1).

3. The automatic calibration device for ultrasonic evaporation sensors of a weather station according to claim 1, wherein: the water storage tank comprises a water storage tank body (1-1) and a water injection port (1-2) arranged on the water storage tank body (1-1).

4. The automatic calibration device for ultrasonic evaporation sensors of a weather station according to claim 1, wherein: the measured sensor mounting cylinder (4-2) and the standard device mounting cylinder (4-3) are perpendicular to the surface of the test box body (4-1).

5. The automatic calibration device for ultrasonic evaporation sensors of a weather station according to claim 1, wherein: the measured sensor mounting cylinder (4-2) and the standard device mounting cylinder (4-3) are acrylic transparent glass cylinders, and graduated scales are carved on the transparent glass cylinders.

6. The automatic calibration device for ultrasonic evaporation sensors of a weather station according to claim 1, wherein: the water sucking and draining device further comprises a gauze (7), wherein the gauze (7) is arranged inside the test box body (4-1) and is positioned at the joint of the test box body (4-1) and the water sucking and draining unit.

7. The automatic calibration device for ultrasonic evaporation sensors of a weather station according to claim 6, wherein: the gauze (7) is made of stainless steel gauze.