CN115165222A - A kind of rain test calibration control system and calibration method - Google Patents

Abstract

The invention discloses a rain test calibration control system and a calibration method, relating to the technical field of vehicle rain tests, wherein the rain test calibration control system comprises: a base plate; the frame body is arranged on the bottom plate, and a spraying device is arranged on the frame body; the calibration device is arranged on the bottom plate and can move in the rain area range to calibrate the rainfall of each subarea in the rain area range; and the control device is used for controlling the precipitation intensity of the spraying device and driving the calibration device to move to the next subregion when the rainfall produced by the spraying device is matched with the rainfall of one subregion calibrated by the calibration device within a set time. The invention ensures the uniform rainfall of the simulated natural weather by increasing the difference calibration covering different areas of the whole rain effective area, realizes the automatic control of the rain and rainfall calibration device, can well improve the calibration efficiency, saves the test time and improves the validity of test data.

Description

A kind of rain test calibration control system and calibration method

technical field

The invention relates to the technical field of vehicle rain test, in particular to a rain test calibration control system and a calibration method.

Background technique

With the advancement of automobile technology, the airtightness of the whole vehicle has become a problem that drivers and passengers are very concerned about. The quality of the airtightness of the car is not only directly related to the life safety of the drivers and passengers, but also brings economic losses to the drivers and passengers, and also makes the drivers and passengers feel insecure. Therefore, in the automotive industry, the rain sealing of the body Sexual testing is an indispensable and important part.

The current closed detection method is to set up a rain shower room, a sprinkler head is arranged on the top of the rain shower room, and the vehicle enters under the sprinkler head to spray water. Check whether there is water seepage in the car, but this method cannot control the flow of rain, so it cannot accurately detect the airtightness of the car body.

In addition, the determination of the results of the vehicle rain test largely depends on the actual rainfall. The regular calibration of the vehicle rain equipment is particularly important, but the traditional rain equipment has a small rainfall calibration container, generally a standard container S.P.I.E.A. rain gauge , Dozens of points need to be located for each calibration, and it takes about 4 to 6 hours to calibrate the rainfall (location time plus calibration time) each time, which takes a long time and is inefficient. The rainfall in the gap between each calibration point cannot be calibrated, and there is still a dead angle in the uniformity of rainfall in the effective area. Moreover, the differences between different areas within the rainwater area are also ill-considered.

SUMMARY OF THE INVENTION

In view of the defects in the prior art, the first aspect of the present invention provides a rain test calibration control system, which can solve the problems of long rainfall calibration time and low rainfall collection accuracy.

In order to achieve the above purpose, the technical scheme adopted in the present invention is:

A rain test calibration control system, comprising:

bottom plate;

a frame body, which is arranged on the bottom plate, and a spray device is arranged on the frame body;

a calibration device, which is arranged on the bottom plate and can be moved within the rain shower area to calibrate the rainfall in each sub-area of the rain shower area;

a control device, which is used to control the precipitation intensity of the spray device, and drive the calibration device to move when the rainfall generated by the spray device matches the rainfall of a sub-area calibrated by the calibration device within a set time period to the next subregion.

In some embodiments, the calibration device includes:

a container positioning grid, which is arranged on the bottom plate, and the container positioning grid includes a plurality of grids divided along the scope of the rain shower area;

A calibration container is used for calibrating the rainfall in each sub-area of the rain shower area, the calibration container is arranged on the container positioning grid, and can be moved between the grids of the container positioning grid.

In some embodiments, the calibration container includes:

A mobile bracket with rollers on it;

The tank body is fixed above the moving bracket, and the tank body is provided with a liquid level sensor.

In some embodiments, the bottom of the mobile support is provided with a height adjuster.

In some embodiments, the rollers on the moving support include two directional wheels and two universal wheels.

In some embodiments, the tank body is further provided with horizontal bubbles.

In some embodiments, a drain hole is provided at the bottom of the tank body, and a drain hole valve and a drain solenoid valve are located below the drain hole.

In some embodiments, the control device includes a PID valve, and the PID valve controls the precipitation intensity of the sprinkler device by adjusting the output voltage.

In some embodiments, the spray device includes a top spray provided at the top of the frame body and a side spray provided at the lateral side of the frame body.

The second aspect of the present invention provides a calibration method for a rain test calibration control system, which can solve the problems of long rainfall calibration time and low rainfall collection accuracy.

In order to achieve the above purpose, the technical scheme adopted in the present invention is:

A calibration method utilizing the above-mentioned rain test calibration control system, the method comprises the following steps:

Use the control device to set the precipitation intensity of the spray device, and spray the calibration device within the set time period;

When the deviation between the precipitation intensity detected by the calibration device and the precipitation intensity set by the control device is within the preset range, it is determined that the precipitation calibration of the current sub-area of the rain shower area is completed;

Utilize the control device to drive the calibration device to move to the next sub-area, and complete the precipitation calibration of each sub-area within the range of the raining area under the set precipitation intensity;

The precipitation intensity of the spray device is adjusted by the control device, and the calibration of the rainfall in each sub-area of the rain shower area is completed under all set precipitation intensities.

Compared with the prior art, the advantages of the present invention are:

The rain test calibration control system in the present invention aims at the problems of difficult calibration of the traditional rain calibration method, large measurement error, large random error of artificial measurement, long rainfall calibration time, and low rainfall collection accuracy; The calibration device that moves inside is used to calibrate the rainfall in each sub-area of the rain shower area, and use the control device to control the precipitation intensity of the sprinkler device, and the rainfall generated by the sprinkler device within the set time is the same as that of the calibration device. When the rainfall of the area is matched, the calibration device is driven to move to the next sub-area, and the calibration error between the two sub-areas is set so that the calibration error between the two sub-areas does not exceed 5% to ensure the uniformity of rainfall in the entire effective shower area. That is, by increasing the difference calibration between different areas covering the entire rain effective area to ensure the uniform rainfall of the simulated natural weather. In addition, the automatic control of the rain and rainfall calibration device is also realized, and the calibration time is controlled within one hour, which can greatly improve the calibration efficiency, save the test time, and improve the validity of the test data.

Description of drawings

1 is a schematic structural diagram of a rain test calibration control system in the embodiment of the present invention;

2 is a perspective view of a calibration device in an embodiment of the present invention;

Fig. 3 is the front view of the calibration device in the embodiment of the present invention;

FIG. 4 is a flow chart of a method for performing calibration using a rain test calibration control system in an embodiment of the present invention.

In the figure: 1. Bottom plate; 2. Frame body; 3. Spraying device; 31. Top spraying; 32. Side spraying; 4. Calibration device; 41. Container positioning grid; 42. Mobile bracket; 421. Height adjustment 422, directional wheel; 423, universal wheel; 43, tank body; 431, liquid level sensor; 432, horizontal bubble; 433, drain hole; 434, drain hole valve; 435, drain solenoid valve.

Detailed ways

The technical solutions (including the preferred technical solutions) of the present invention will be further described in detail below by means of the accompanying drawings and the manner of enumerating some optional embodiments of the present invention. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of this application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the application and simplifying the description, Rather than indicating or implying that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, it should not be construed as a limitation on the application. Unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, It can also be an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

Further, in this application, relational terms such as "first" and "second" etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these entities or that there is any such actual relationship or sequence between operations. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

The current technical center project is developed to verify the waterproof and sealing performance of the product, and it is necessary to do a vehicle rain test, and the judgment of the vehicle rain test result largely depends on the actual rainfall. The rainfall of the vehicle rain equipment is regularly calibrated. It is particularly important that the previous calibration method is cumbersome and inefficient. The calibration time takes about half a day, and the differences between different areas within the rainy area are not considered carefully. Therefore, the present invention adopts a new calibration method with a A new type of calibration device can greatly improve the calibration efficiency, the calibration time is controlled within one hour, and in order to ensure the uniform rainfall in the simulated natural weather, the difference calibration between different areas covering the entire rain effective area is added.

Specifically, referring to FIGS. 1 to 3 , the present invention discloses a rain test calibration control system, which includes a base plate 1 , a frame body 2 , a spray device 3 , a calibration device 4 and a control device.

The frame body 2 is arranged on the bottom plate 1 , and a spray device 3 is arranged on the frame body 2 . The calibration device 4 is arranged on the bottom plate 1 and can be moved within the rain shower area to calibrate the rainfall in each sub-area of the rain shower area. The control device is used to control the precipitation intensity of the spraying device 3, and drive the calibration device when the rainfall generated by the spraying device 3 matches the rainfall of a sub-area calibrated by the calibration device 4 within a set time. 4 Move to the next sub-area.

In some embodiments, the control device includes a PID valve, and the PID valve controls the precipitation intensity of the spray device 3 by adjusting the output voltage.

The spray device 3 is mainly used to spray rainwater to the calibration device 4 to perform test calibration. In this embodiment, the spray device 3 includes a top spray 31 arranged on the top of the frame The side spray 32 on the side of the frame body 2 . Among them, the top spray 31 has four nozzles, including dozens of nozzles; the side spray 32 has two nozzles, including dozens of nozzles; in this way, the effect of rainwater falling from the top and sides can be simulated.

In some embodiments, the calibration device 4 includes a container positioning grid 41 and a calibration container.

Wherein, the container positioning grid 41 is arranged on the bottom plate 1 , and the container positioning grid 41 includes a plurality of grids divided along the rain shower area. The calibration container is used for calibrating the rainfall in each sub-area of the rain shower area. The calibration container is arranged on the container positioning grid 41 and can be moved between the grids of the container positioning grid 41 .

It can be understood that, the number of cells included in the container positioning cells 41 can be reasonably set as required, for example, it can be set to 10, which is not limited in the present invention.

In some embodiments, the calibration container includes a moving bracket 42 and a tank body 43 .

The moving bracket 42 is provided with rollers to facilitate the movement of the calibration container. Preferably, the rollers on the moving bracket 42 include two directional wheels 422 and two universal wheels 423 . In order to ensure the stability of the movable bracket 42, a height adjuster 421 is provided at the bottom of the movable bracket 42. The height adjuster 421 can be used to adjust the level of the movable bracket 42. In order to facilitate the adjustment of whether the level of the movable bracket 42 is in place , the tank body 43 is also provided with a horizontal bubble 432 for auxiliary observation.

The tank body 43 is fixed above the movable bracket 42 , and the tank body 43 is provided with a liquid level sensor 431 . The tank body 43 is mainly used to collect rainwater in the rain shower test, and the liquid level sensor 431 is used to detect the liquid level in the tank body 43 to compare with the spray amount of the spray device 3 for test calibration.

After the calibration of one cell of the container positioning cell 41 is completed, the rainwater in the tank body 43 needs to be drained to perform the calibration of the next cell. In order to drain the rainwater in the tank body 43 , in this embodiment, a drain hole 433 is provided at the bottom of the tank body 43 , and a drain hole valve 434 and a drain solenoid valve 435 are located below the drain hole 433 . The drain solenoid valve 435 can control the drain hole valve 434 to open or close, so that rainwater can flow out through the drain hole 433 .

The principle of the rain test calibration control system in the present invention is described below:

The main functional parts of the rain shower room of the rain test calibration control system in this embodiment include a base plate 1 (carrying system, parking vehicles), a frame body 2, a spray device 3 is arranged on the frame body 2, and the spray device 3 includes The top shower 31 is arranged on the top of the frame body 2 and the side shower 32 is arranged at the side of the frame body 2 .

Among them, the top spray 31 (four spray pipes, including dozens of spray heads), the side spray 32 (two spray pipes, including dozens of spray heads); the calibration device 4 mainly includes a calibration container positioning system (container positioning grid 41 ) and a calibration container, the calibration container includes a movable bracket 42 and a tank body 43, and the tank body 43 is provided with a liquid level sensor 431. The control device includes a PID valve, which controls the precipitation intensity of the spray device 3 by adjusting the output voltage.

The calibration container is provided with 4 horizontal bubbles 432 (level detection system) in the middle of the four sides above it to detect whether the container has reached a horizontal state after being placed. The four height adjusters 421 are used to adjust the horizontal state of the calibration container.

The container positioning grid 41 in FIG. 1 is an area with an effective shower area of 200cm*500cm in this embodiment, which is evenly divided into 10 squares, each of which is 100cm*100cm in size, used for calibrating the container positioning For each calibration process, the calibration container needs to be placed in the 10 squares in the container positioning grid 41 in turn, one square is sprayed with rainfall for 2 minutes, the rainfall per unit time (per minute) is calculated, and 10 squares are used for calibration. After the calculation, the error between each two squares should not exceed 5% to ensure the uniformity of rainfall throughout the effective shower area.

In the present invention, three kinds of rainfall need to be calibrated, light rain (5mm/min), moderate rain (12mm/min) and heavy rain (35mm/min). In the rain test of the whole vehicle: input the rainfall into the control device, for example: heavy rain (35mm/min) corresponds to PID valve AO output 0-10V, 0V corresponds to 0mm/min, 10V corresponds to 35mm, 0-10V corresponds to PID valve 0-100% .

When the control device sprays water evenly to the rain shower area through the top spray 31 and the side spray 32 to simulate a certain amount of rain in natural weather. The control device feeds back the spray rainfall in real time through the PID valve. When the rain shower device sprays for 120S, the test spray rainfall is compared with the liquid level sensor 431 of the calibration container. When the rainfall is equal to the calibration liquid level of the calibration container, the computer automatically calculates the detected rainfall The spraying accuracy can be set to meet the accuracy requirements when the amount of rainwater and the liquid level of the calibration container are within ±0.1mm/min.

If the accuracy requirements are met, the system will determine OK or NOK (including rainwater standing) within 30S. If the rainfall detection error is large, the system will automatically stop and return to the cycle test state, and start the spray device 3 again; if OK, the system will automatically go to the next process. , the drain solenoid valve 435 enters the drain state. At this time, the drain solenoid valve 435 will open the drain hole valve 434, drain the water through the drain hole 433, drain the water for 30 seconds and the liquid level sensor 431 detects: "0", the servo motor starts to calibrate The container moves to the next test square. Complete the first set of loop tests. The computer system continues to enter the second set of rainfall calibration cycle test conditions, and tests 10 sets of data in turn. It is understandable that through this method, 10 sets of data for light rain (5mm/min) and 10 sets of data for moderate rain (12mm/min) can be obtained. , Heavy rain (35mm/min) 10 sets of data, the computer automatically issues a rainfall detection report, realizes the automatic control of the rain and rainfall calibration device, saves the test time and improves the validity of the test data.

To sum up, the rain test calibration control system in the present invention aims at the problems of difficult calibration, large measurement error, large random error of artificial measurement, long rainfall calibration time, and low rainfall collection accuracy in the traditional rain calibration method; The calibration device that moves within the rain shower area is used to calibrate the rainfall in each sub-area of the rain shower area, and the control device is used to control the rainfall intensity of the sprinkler device, and the rainfall generated by the sprinkler device within the set time is the same as the above-mentioned When the calibration device calibrates the rainfall of one sub-area to match, the calibration device is driven to move to the next sub-area, and the calibration error between the two sub-areas is set so that the calibration error between the two sub-areas does not exceed 5% to ensure the uniformity of rainfall in the entire effective shower area. That is, by increasing the difference calibration between different areas covering the entire rain effective area to ensure the uniform rainfall of the simulated natural weather. In addition, the automatic control of the rain and rainfall calibration device is also realized, and the calibration time is controlled within one hour, which can greatly improve the calibration efficiency, save the test time, and improve the validity of the test data.

At the same time, as shown in FIG. 4 , an embodiment of the present invention also provides a calibration method for calibrating the control system using the above-mentioned rain test, and the method includes the following steps:

S1. Use the control device to set the precipitation intensity of the spray device 3, and spray the calibration device 4 within the set time period.

The main functional parts of the rain shower room of the calibration control system for the rain test include the base plate 1 (carrying system, parking vehicle), the frame body 2, and the frame body 2 is provided with a spray device 3, and the spray device 3 includes a spray device 3 located on the frame body 2 The top shower 31 at the top and the side shower 32 provided on the side of the frame body 2 .

Among them, the top spray 31 (four spray pipes, including dozens of spray heads), the side spray 32 (two spray pipes, including dozens of spray heads); the calibration device 4 mainly includes a calibration container positioning system (container positioning grid 41 ) and a calibration container, the calibration container includes a movable bracket 42 and a tank body 43, and the tank body 43 is provided with a liquid level sensor 431.

The control device includes a PID valve, and the PID valve controls the precipitation intensity of the spray device 3 by adjusting the output voltage. In the present invention, three kinds of rainfall need to be calibrated, light rain (5mm/min), moderate rain (12mm/min) and heavy rain (35mm/min). In the rain test of the whole vehicle: input the rainfall into the control device, for example: heavy rain (35mm/min) corresponds to PID valve AO output 0-10V, 0V corresponds to 0mm/min, 10V corresponds to 35mm, 0-10V corresponds to PID valve 0-100% .

The set duration may be reasonably set as required, for example, may be set to 120 seconds, which is not limited in this embodiment.

S2. When the deviation between the precipitation intensity detected by the calibration device 4 and the precipitation intensity set by the control device is within a preset range, determine that the precipitation calibration of the current sub-area of the rain shower area is completed.

The deviation between the detected precipitation intensity and the precipitation intensity set by the control device is within the preset range, that is, the accuracy requirements are met. For example, the accuracy can be met when the rainfall amount and the calibration container liquid level can be set within ±0.1mm/min. requirements, when the accuracy requirements are met, the rainfall calibration of the current sub-region is completed.

If the accuracy requirements are met, the system will determine OK or NOK (including rainwater standing) within 30S. If the rainfall detection error is large, the system will automatically stop and return to the cycle test state, and start the spray device 3 again; if OK, the system will automatically go to the next process. , the drain solenoid valve 435 enters the drain state, after draining for 30 s and the liquid level sensor 431 detects "0", the servo motor starts to move the calibration container to the next test square (sub-area).

S3. Use the control device to drive the calibration device 4 to move to the next sub-area, and complete the rainfall calibration of each sub-area of the rain-splashing area under the set precipitation intensity.

In this embodiment, the calibration device 4 mainly includes a calibration container positioning system (container positioning grid 41 ) and a calibration container. The calibration container includes a movable bracket 42 and a tank body 43 , and the tank body 43 is provided with a liquid level sensor 431 .

The calibration container is provided with 4 horizontal bubbles 432 (level detection system) in the middle of the four sides above it to detect whether the container has reached a horizontal state after being placed. The four height adjusters 421 are used to adjust the horizontal state of the calibration container.

The container positioning grid 41 is an area with an effective shower area of 200cm*500cm. It is evenly divided into 10 squares, and each square is 100cm*100cm in size. It is used for calibrating the container positioning. Each calibration process needs to be calibrated. The containers are placed in the 10 squares in the container positioning grid 41 in turn. One square is sprayed with rainfall for 2 minutes, and the rainfall per unit time (per minute) is calculated. After the 10 squares are calibrated, the interval between each two squares is calculated. The error does not exceed 5% to ensure the uniformity of rainfall throughout the effective shower area.

In order to ensure the measurement accuracy of the collected water, a liquid level sensor 431 is also added to the tank body 43 of the calibration container, and the bottom of the tank body 43 is provided with a drainage hole 433, and a drainage hole valve 434 and a drainage solenoid valve 435 located below the drainage hole 433. The drain solenoid valve 435 can control the opening or closing of the drain hole valve 434. When the drain hole valve 434 is opened, the rainwater in the tank body 43 can be discharged through the drain hole 433 to facilitate the test of the next sub-area.

At the same time, two universal wheels 423 and two directional wheels 422 are also set at the bottom of the calibration container, and a track servo motor is added to the side of the universal wheel 423, and the calibration container can be realized through the universal wheel 423, the directional wheel 422 and the servo motor. random movement.

Set the rainfall size of the sprinkler device 3, for example, set it to heavy rain (35mm/min), open the PID valve, and inject the rainfall accurately into the calibration container for 120S. When the liquid level sensor 431 and the PID valve automatically detect the rain of 35mm /min, and the liquid level sensor 431 detects: 35mm/min, the system automatically stops spraying and rain collection; at this time, waits for 60S, the system saves the data and calculates the accuracy; start the drain solenoid valve 435, the drain solenoid valve 435 opens the drain The hole valve 434 drains water through the drain hole 433. When the liquid level sensor 431 detects that the liquid level is 0, wait for 1S, the servo motor starts to work and sends the calibration container to the second square. The sprinkler device 3 continues to operate according to the control logic, and automatically collects rainfall in sequence 1-2-3-4-5-6-7-8-9-10, and realizes automatic calibration of rainfall in 10 squares.

S4. Use the control device to adjust the precipitation intensity of the spray device 3, and complete the calibration of the rainfall in each sub-area of the rain shower area under all set precipitation intensities.

In the present invention, three kinds of rainfall need to be calibrated, light rain (5mm/min), moderate rain (12mm/min) and heavy rain (35mm/min), and 10 sets of data will be tested under each rainfall.

After completing the first set of cyclic tests using the above steps, the computer system continues to enter the second set of rainfall calibration cyclic test conditions, and tests 10 sets of data in turn. It is understandable that 10 sets of light rain (5mm/min) can be obtained by this method. Data, 10 sets of data for moderate rain (12mm/min), 10 sets of data for heavy rain (35mm/min), the computer automatically issues a rainfall detection report, realizes the automatic control of the rain and rainfall calibration device, saves the test time, and improves the validity of the test data.

To sum up, the calibration method in the present invention aims at the problems of difficult calibration, large measurement error, large random error of artificial measurement, long rainfall calibration time, and low rainfall collection accuracy in the traditional rain calibration method; The calibration device that moves within the range is used to calibrate the rainfall in each sub-area of the rain shower area, and use the control device to control the rainfall intensity of the sprinkler device, and the rainfall generated by the sprinkler device within the set time is the same as the calibration device. When the rainfall in the sub-areas is matched, the calibration device is driven to move to the next sub-area, and the calibration error between the two sub-areas is set so that the calibration error between the two sub-areas does not exceed 5% to ensure the uniformity of rainfall in the entire effective shower area. That is, by increasing the difference calibration between different areas covering the entire rain effective area to ensure the uniform rainfall of the simulated natural weather. In addition, the automatic control of the rain and rainfall calibration device is also realized, and the calibration time is controlled within one hour, which can greatly improve the calibration efficiency, save the test time, and improve the validity of the test data.

The above descriptions are only specific embodiments of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, this application is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims (10)

1. A rain test calibration control system is characterized by comprising:

a base plate (1);

the frame body (2) is arranged on the bottom plate (1), and a spraying device (3) is arranged on the frame body (2);

the calibration device (4) is arranged on the bottom plate (1) and can move in the rain area range to calibrate the rainfall of each subarea in the rain area range;

the control device is used for controlling the precipitation intensity of the spraying device (3) and driving the calibration device (4) to move to the next subarea when the rainfall produced by the spraying device (3) is matched with the rainfall calibrated in one subarea by the calibration device (4) in a set time.

2. A rain test calibration control system according to claim 1, characterized in that the calibration means (4) comprises:

a container positioning grid (41) arranged on the bottom plate (1), wherein the container positioning grid (41) comprises a plurality of grids divided along the range of a rain area;

the calibration container is used for calibrating the rainfall of each subarea of the rain area range, is arranged on the container positioning grid (41) and can move among the grids of the container positioning grid (41).

3. The rain test calibration control system according to claim 2, wherein: the calibration container comprises:

a movable bracket (42) provided with a roller;

the tank body (43) is fixed above the movable support (42), and a liquid level sensor (431) is arranged in the tank body (43).

4. The rain test calibration control system according to claim 3, wherein: the bottom of the movable support (42) is provided with a height adjuster (421).

5. The rain test calibration control system according to claim 3, wherein: the rollers on the moving support (42) comprise two directional wheels (422) and two universal wheels (423).

6. A rain test calibration control system according to claim 4 or 5, wherein: the trough body (43) is also provided with a horizontal bubble (432).

7. The rain test calibration control system according to claim 3, wherein: the bottom of the tank body (43) is provided with a drain hole (433), a drain hole valve (434) and a drain electromagnetic valve (435) which are positioned below the drain hole (433).

8. The rain test calibration control system according to claim 1, wherein: the control device comprises a PID valve which controls the precipitation intensity of the spray device (3) by adjusting the output voltage.

9. The rain test calibration control system according to claim 1, wherein: the spraying device (3) comprises a top spray (31) arranged at the top of the frame body (2) and a side spray (32) arranged at the side of the frame body (2).

10. A calibration method using the rain test calibration control system of claim 1, the method comprising the steps of:

setting the precipitation intensity of the spraying device (3) by using a control device, and spraying the calibration device (4) within a set time length;

when the deviation between the precipitation intensity detected by the calibration device (4) and the precipitation intensity set by the control device is within a preset range, judging that the rainfall calibration of the current sub-area in the rain area range is completed;

driving the calibration device (4) to move to the next subarea by using a control device to finish the rainfall calibration of each subarea in the rainfall area range under the set rainfall intensity;

and adjusting the rainfall intensity of the spraying device (3) by using a control device to finish the rainfall calibration of each subarea in the rainfall area range under all the set rainfall intensities.

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