Spraying device, spraying control method and wiper testing system

Abstract

The present invention belongs to the technical field of automobile parts production and manufacturing, and discloses a spray device, a spray control method, and a wiper test system. The spray device includes a liquid supply mechanism, which is arranged in the automobile and is used to provide spray liquid; a detection mechanism, which is arranged on the inner side of the automobile's windshield and is used to detect the amount of spray liquid on the windshield; a spray mechanism, which is arranged on the hood of the automobile and is connected to the liquid supply mechanism. According to the amount of spray liquid on the windshield, the spray mechanism adjusts the angle and spray amount of the spray liquid sprayed onto the windshield. The spray device has adjustable spray angles and spray amounts, which can achieve automatic adjustment of the spray amount and spray angle. No manual adjustment is required to achieve sufficient and uniform water spray. The operation is simple, does not affect the test progress, and improves test efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile parts production and manufacturing, and in particular to a spraying device, a spraying control method and a wiper testing system. Background Art

[0002] With the rapid development of China's economy, people are placing higher demands on automobile safety. Maintaining a clear field of vision is particularly important when driving at high speeds in the rain. To ensure the functionality of windshield wipers during high-speed driving, high-speed performance testing is often required after manufacturing. This ensures that the wipers operate properly even at wind speeds reaching 80% of the vehicle's maximum speed, thereby ensuring driver visibility and safety.

[0003] Wiper tests are usually carried out through wind tunnel experiments, which require a large amount of water spraying to test the performance indicators of wipers. There are several types of water spraying devices currently used in wind tunnel experiments:

[0004] First, the car's built-in washing system was used. However, due to the complex wind tunnel test process, the large number of test items and the long test time, the built-in washing pot has a limited capacity and cannot spray for a long time. This causes the wiper blades to scrape dry during operation, which will wear the wiper rubber strips. The test time is long and the test results are poor.

[0005] Second, the existing test benches used uneven water spray, affecting the judgment of high-speed wiper performance. Furthermore, the spray direction, arranged based on the experimenters' experience, was often affected by wind speed at high wind speeds, with the water volume being pushed down or blown left or right. This necessitated repeated adjustments to the nozzle spray angle, and as wind speeds increased, the necessary adjustments became increasingly cumbersome. Summary of the Invention

[0006] The object of the present invention is to provide a spray device, a spray control method and a wiper test system, which can adjust the water spray volume according to the wind speed so that the water spray volume is sufficient and uniform, thereby reducing the adjustment time and damage to the wipers.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] A spray device includes: a liquid supply mechanism, located within a vehicle, for supplying spray liquid; a detection mechanism, located on the inside of the vehicle's windshield, for detecting the amount of spray liquid on the windshield; and a spray mechanism, located on the vehicle's hood and connected to the liquid supply mechanism. The spray mechanism adjusts the angle and amount of spray liquid sprayed onto the windshield based on the amount of spray liquid on the windshield. The liquid supply mechanism includes a water tank, located in the vehicle's trunk or on the rear seat, for holding the spray liquid. The liquid supply mechanism also includes an infusion assembly, located within the vehicle's passenger compartment, connected to the water tank and the spray mechanism, for transferring the spray liquid from the tank to the spray mechanism. The infusion assembly includes a water pump, connected to the water tank and the spray mechanism, for pumping the spray liquid from the tank into the spray mechanism. The infusion assembly also includes a valve, located between the water pump and the spray mechanism, the valve opening used to adjust the spray volume. The infusion assembly also includes a flowmeter, positioned between the valve and the spray mechanism, for detecting the flow rate of the spray liquid. The vehicle windshield is provided with a main wiper area and a secondary wiper area. The detection mechanism includes a first sensor and a second sensor. The first sensor is located within the secondary wiper area, and the second sensor is located within the main wiper area. The first and second sensors are at the same height along the second direction. The detection mechanism also includes a third sensor and a fourth sensor, both located within the secondary wiper area. The third and fourth sensors are respectively positioned on either side of the second sensor along the second direction, with the third sensor having a height greater than that of the fourth sensor along the second direction. The detection mechanism also includes a fifth sensor and a sixth sensor, both located within the secondary wiper area. The fifth sensor is greater than the sixth sensor along the second direction, and the fifth sensor and the first sensor are respectively positioned on either side of the second sensor along the first direction, wherein the first and second directions are perpendicular to each other. The spray mechanism includes a first nozzle. Based on the spray liquid volume detected by the first and second sensors, the first nozzle adjusts the spray liquid spray angle along the first direction and sprays the spray liquid toward the secondary wiper area. The spray mechanism includes a second nozzle. Based on the spray liquid amounts detected by the second, third, and fourth sensors, the second nozzle adjusts the spray liquid spraying angle in the second direction and sprays the spray liquid toward the main wiper area. The spray mechanism includes a third nozzle. The third nozzle and the first nozzle are respectively arranged on either side of the second nozzle along the first direction. Based on the spray liquid amounts detected by the fifth and sixth sensors, the third nozzle adjusts the spray liquid spraying angle in the second direction and sprays the spray liquid toward the main wiper area.

[0009] To achieve the above objectives, the present invention also provides a spray control method, which controls a spray device. The spray device includes: a liquid supply mechanism disposed within a vehicle for supplying spray liquid; a detection mechanism disposed on the inside of the vehicle's windshield for detecting the amount of spray liquid on the windshield; and a spray mechanism disposed on the vehicle's hood and connected to the liquid supply mechanism. The spray control method includes the following steps: obtaining the amount of spray on the windshield, and adjusting the angle and amount of spray liquid sprayed onto the windshield by the spray mechanism based on the amount of spray. The spray mechanism includes a first nozzle, a third nozzle, and a second nozzle disposed between the first and third nozzles. The detection mechanism includes a first sensor, a second sensor, a third sensor, a fourth sensor, a fifth sensor, and a sixth sensor. The first sensor and the second sensor are at the same height along the second direction. The third sensor and the fourth sensor are disposed on either side of the second sensor along the second direction. The third sensor is greater than the fourth sensor in the second direction. The fifth sensor is greater than the sixth sensor in the second direction. The fifth sensor and the first sensor are disposed on either side of the second sensor in the first direction. The first and second directions are perpendicular to each other. Comparing the spray liquid volume V1 detected by the first sensor with the spray liquid volume V2 detected by the second sensor, if V1 is less than 1 / 3*V2, the first nozzle adjusts the angle of spraying the spray liquid along the first direction away from the second nozzle. Comparing the spray liquid volume V2 detected by the second sensor, the spray liquid volume V3 detected by the third sensor, and the spray liquid volume V4 detected by the fourth sensor, if V3 is less than V2 and less than V4, the second nozzle adjusts the angle of spraying the spray liquid along the second direction toward the third sensor. If V3 is greater than V2 and greater than V4, the second nozzle adjusts the angle of spraying the spray liquid along the second direction away from the third sensor. Comparing the spray liquid volume V5 detected by the fifth sensor with the spray liquid volume V6 detected by the sixth sensor, if V5 is less than 1 / 3*V6, the third nozzle adjusts the angle of spraying the spray liquid along the second direction toward the fifth sensor. The liquid infusion assembly of the liquid supply mechanism includes a water pump and a valve. The water pump is connected to the liquid supply mechanism, and the valve is disposed between the water pump and the spray mechanism. When V1, V2, V3, V4, V5 and V6 are all less than the minimum preset value Vmin, the opening of the regulating valve becomes larger. When V1, V2, V3, V4, V5 and V6 are all greater than the maximum preset value Vmax, the opening of the regulating valve becomes smaller.

[0010] To achieve the above-mentioned purpose, the present invention also provides a wiper testing system, including a spray device and a testing device. The testing device is located on one side of the spray device. The testing device is used to detect the wiper blade performance of the wiper. The spray device includes: a liquid supply mechanism, which is arranged in the car and is used to provide spray liquid; a detection mechanism, which is arranged on the inner side of the windshield of the car and is used to detect the amount of spray liquid on the windshield; a spray mechanism, which is arranged on the hood of the car and is connected to the liquid supply mechanism. According to the amount of spray liquid on the windshield, the spray mechanism adjusts the angle and spray amount of the spray liquid sprayed onto the windshield.

[0011] Beneficial effects of the present invention:

[0012] The spray device provided by the present invention, by providing a liquid supply mechanism, can replace the vehicle's built-in washing system, providing sufficient water for wind tunnel experiments involving windshield wipers. It can spray for a long time, preventing dry scraping of the wiper blades, reducing blade wear and test time. Furthermore, after the spray mechanism sprays liquid onto the windshield, a detection mechanism detects the amount of liquid sprayed on the windshield and transmits a signal of the amount sprayed to a controller. Based on the amount of liquid sprayed on the windshield, the controller controls the spray mechanism to adjust the angle and amount of liquid sprayed onto the windshield, making the angle and amount of liquid sprayed adjustable. The spray device can automatically adjust the amount and angle of spray, ensuring sufficient and uniform water spray without manual adjustment. It is simple to operate, does not affect the test progress, and improves test efficiency.

[0013] The present invention also provides a spray control method. By setting the spray mechanism to be adjustable, the angle and spray amount of the spray mechanism can be adjusted according to the wind speed and actual conditions, ensuring that the windshield is covered with sufficient and uniform spray liquid, thereby ensuring the accuracy of the test.

[0014] The present invention also provides a wiper test system. By providing a spray device, it can be installed in a wind tunnel laboratory, mounted on a vehicle, or used to simulate wind tunnel testing on a high-speed track. Adjustments can be made to suit different vehicle models, resulting in high versatility. Furthermore, the wiper test system is easy to install, facilitates experimental observation and adjustment, and can be reused to save experimental costs and improve experimental efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the principle of the spray device of the present invention;

[0016] Figure 2 It is a structural schematic diagram of the spray device of the present invention;

[0017] Figure 3 is a schematic diagram of the detection mechanism in the spray device of the present invention bonded to the windshield;

[0018] Figure 4 Schematic diagram of the distribution of the detection mechanism and the spray mechanism in the spray device of the present invention;

[0019] Figure 5 It is a flow chart of the spray control method of the present invention.

[0020] In the picture:

[0021] 1. Liquid supply mechanism; 2. Detection mechanism; 3. Spray mechanism; 4. Windshield; 5. Engine hood; 6. Controller;

[0022] 11. Water tank; 12. Infusion assembly; 121. Water pump; 122. Valve; 123. Flow meter; 124. Water pump detector; 125. Power supply;

[0023] 21. First sensor; 22. Second sensor; 23. Third sensor; 24. Fourth sensor; 25. Fifth sensor; 26. Sixth sensor;

[0024] 31. First nozzle; 32. Second nozzle; 33. Third nozzle;

[0025] 41. Main wiper area; 42. Sub-wiper area. DETAILED DESCRIPTION

[0026] To make the technical problems solved, the technical solutions adopted, and the technical effects achieved by the present invention more clearly understood, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It is apparent that the described embodiments are only some of the embodiments of the present invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0027] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0028] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0029] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0030] This embodiment provides a spray device, which is suitable for use in wind tunnel experiments involving windshield wipers. Figure 1-2 As shown, the spraying device includes a liquid supply mechanism 1, a detection mechanism 2, a spraying mechanism 3 and a controller 6. The liquid supply mechanism 1 is arranged in the car and is used to provide spraying liquid. The spraying liquid can be water. The detection mechanism 2 is arranged on the inner side of the car's windshield 4 (such as Figure 3 , a detection mechanism 2 is used to detect the amount of spray liquid on the windshield 4. A spray mechanism 3 is disposed on the hood 5 of the vehicle and is connected to the liquid supply mechanism 1. The spray mechanism 3 is used to spray the spray liquid onto the windshield 4. A controller 6 is disposed in the passenger compartment of the vehicle and is electrically connected to the detection mechanism 2 and the spray mechanism 3.

[0031] The spray device provided in this embodiment, by providing a liquid supply mechanism 1, can replace the vehicle's built-in washing system, providing sufficient water for wind tunnel experiments with wipers. It can spray for a long time, preventing dry wiper blades from scraping, reducing blade wear, and reducing test time. Simultaneously, after the spray mechanism 3 sprays liquid onto the windshield 4, the detection mechanism 2 detects the amount of liquid sprayed onto the windshield 4 and transmits a signal of the amount sprayed to the controller 6. Based on the amount of liquid sprayed onto the windshield 4, the controller 6 controls the spray mechanism 3 to adjust the angle and amount of liquid sprayed onto the windshield 4, making the angle and amount of liquid sprayed adjustable. The spray device can automatically adjust the amount and angle of spray, ensuring sufficient and uniform water spray without manual adjustment. It is simple to operate, does not affect the test progress, and improves test efficiency.

[0032] Furthermore, in order to provide sufficient water source for the spraying mechanism 3, the liquid supply mechanism 1 includes a water tank 11, also called a counterweight water man. The water tank 11 generally has a capacity of about 60L. The water tank 11 is preferably arranged in the trunk of the car. If the trunk cannot be fixed, it can also be fixed to the rear seat of the car with a car seat belt.

[0033] Furthermore, if Figure 1-2 As shown, the liquid supply mechanism 1 also includes an infusion assembly 12, which is disposed in the passenger compartment of the vehicle. The infusion assembly 12 is connected to the water tank 11 and the spray mechanism 3, respectively, and is used to deliver the spray liquid in the water tank 11 to the spray mechanism 3. Specifically, the infusion assembly 12 includes a water pump 121, a valve 122, a flow meter 123, a water pump detector 124, and a power supply 125. The power supply 125 is electrically connected to the controller 6 and the water pump 121, respectively. The water pump 121 is connected to the water tank 11 and the spray mechanism 3, respectively. Driven by the power supply 125, the water pump 121 can provide power output for the spray liquid to the spray mechanism 3. Because it operates in a wind tunnel, the water pump 121 is specifically a high-pressure pump with a minimum pressure greater than 3 bar, so that the water pump 121 can pump the spray liquid in the water tank 11 into the spray mechanism 3.

[0034] A water pump detector 124 is electrically connected to the water pump 121 via a wiring harness and provides real-time pump parameters, including voltage and current, to ensure the proper operation of the water pump 121. A valve 122 is located between the water pump 121 and the spray mechanism 3. The controller 6 is electrically connected to the valve 122 and controls the opening of the valve 122 to control the water flow, ensuring that the spray mechanism 3 evenly sprays the spray liquid onto the windshield 4. A flow meter 123 is located between the valve 122 and the spray mechanism 3 to detect the spray liquid flow rate. By monitoring the water flow, the flow rate is maintained at or above 13.6 cm³ / s.

[0035] It is understandable that the various parts are connected by water pipes. Since they need to be arranged on the entire vehicle, the water pipes are made of TPV or PA66 materials to ensure that the water pipes are not easily deformed, bent or knotted.

[0036] When the wipers clean the rain on the windshield 4, Figure 4 As shown, the wipers cannot cover the entire windshield 4. The windshield 4 of the vehicle is provided with a primary wiper area 41 and a secondary wiper area 42. The primary wiper area 41 is the primary area where the wipers oscillate, while the secondary wiper area 42 is the secondary area where the wipers oscillate. For ease of description, from the perspective of the vehicle from the outside to the inside, the width of the windshield 4 is defined as a first direction, i.e., the left-right direction, and the height of the windshield 4 is defined as a second direction, i.e., the up-down direction. The first and second directions are perpendicular to each other. It should be understood that the first and second directions merely represent spatial directions and have no practical meaning.

[0037] In order to achieve accurate detection of the spray amount on the windshield 4, as Figure 1-2As shown, the detection mechanism 2 includes a first sensor 21, a second sensor 22, a third sensor 23, a fourth sensor 24, a fifth sensor 25, and a sixth sensor 26, each of which is a rain sensor. To prevent the spray from affecting sensor accuracy, each sensor is preferably attached to the inside of the windshield 4. The first sensor 21 is located within the secondary wiper area 42, and the second sensor 22 is located within the primary wiper area 41. The first and second sensors 21 and 22 are at the same height along the second direction. The third, fourth, fifth, and sixth sensors 26 are all located within the secondary wiper area 42. The third and fourth sensors 23 and 24 are respectively located on either side of the second sensor 22 along the second direction. The third sensor 23 is higher than the fourth sensor 24 in the second direction. The fifth sensor 25 is higher than the sixth sensor 26 in the second direction. The fifth sensor 25 and the first sensor 21 are respectively located on either side of the second sensor 22 in the first direction.

[0038] Since the data detected by each sensor represents the spraying amount of different areas of the windshield 4, the amount of spraying on the windshield 4 is determined according to the detection data of each sensor, so as to adjust the spraying amount and spraying angle of the spraying mechanism 3. Specifically, Figure 4 As shown, the spray mechanism 3 includes a first nozzle 31, a second nozzle 32 and a third nozzle 33. The first nozzle 31 and the third nozzle 33 are respectively arranged on both sides of the second nozzle 32 along the first direction, and the first nozzle 31, the second nozzle 32 and the third nozzle 33 are arranged in parallel. When one of the nozzles has an abnormality, the other nozzles can work normally independently.

[0039] Based on the spray liquid amounts detected by the first and second sensors 21 and 22, the first nozzle 31 adjusts its spraying angle in the first direction and sprays the spray liquid toward the secondary wiper area 42. Based on the spray liquid amounts detected by the second, third, and fourth sensors 22, 23, and 24, the second nozzle 32 adjusts its spraying angle in the second direction and sprays the spray liquid toward the primary wiper area 41. Based on the spray liquid amounts detected by the fifth and sixth sensors 25 and 26, the third nozzle 33 adjusts its spraying angle in the second direction and sprays the spray liquid toward the primary wiper area 41.

[0040] Furthermore, the first nozzle 31 is designed to have only left-right adjustment, while the second and third nozzles 32 and 33 are designed to have only up-down adjustment. This is because the spray area of the second and third nozzles 32 and 33 is designed to be the primary wiper zone 41, which is the primary area for wiping tests and requires sufficient spray coverage. However, due to wind pressure, the spray area is compressed downward as wind speed increases, necessitating that the second and third nozzles 32 and 33 primarily adjust the vertical and horizontal areas. The first nozzle 31 is positioned on the left side of the windshield 4, making it susceptible to tilting due to the surrounding wind speed. Furthermore, the areas to either side, particularly the left side, are designated as the secondary wiper zone 42, which is not the primary area for wind tunnel testing. Therefore, sufficient spray volume within this secondary wiper zone 42 is sufficient.

[0041] When the spraying device is assembled, the valve 122 is opened to spray liquid onto the windshield 4 through the first nozzle 31, the second nozzle 32 and the third nozzle 33. The six sensors on the windshield 4 will monitor the spraying amount at each position, and transmit the information to the controller 6. After comparing the different water amounts at each position, the controller 6 will issue commands to the first nozzle 31, the second nozzle 32 and the third nozzle 33 to adjust the spraying direction of each nozzle.

[0042] This embodiment also provides a spray control method for controlling a spray device, which includes a liquid supply mechanism 1, a detection mechanism 2, and a spray mechanism 3. The liquid supply mechanism 1 is disposed within a vehicle and is used to provide spray liquid. The detection mechanism 2 is disposed inside the vehicle's windshield 4 and is used to detect the amount of spray liquid on the windshield 4. The spray mechanism 3 is disposed on the vehicle's hood 5 and is connected to the liquid supply mechanism 1. The spray control method includes the following steps: obtaining the amount of spray liquid on the windshield 4; and adjusting the angle and amount of spray liquid sprayed onto the windshield 4 based on the amount of spray liquid.

[0043] The spray control method provided in this embodiment, by setting the spray mechanism 3 to be adjustable, can adjust the angle and spray amount of the spray mechanism 3 according to the wind speed and actual conditions, ensuring that the windshield 4 is covered with sufficient and uniform spray liquid, thereby ensuring the accuracy of the test.

[0044] Furthermore, the spray mechanism 3 includes a first nozzle 31, a third nozzle 33, and a second nozzle 32 disposed between the first nozzle 31 and the third nozzle 33. Correspondingly, the detection mechanism 2 includes a first sensor 21, a second sensor 22, a third sensor 23, a fourth sensor 24, a fifth sensor 25, and a sixth sensor 26. The first sensor 21 and the second sensor 22 have the same height along the second direction, the third sensor 23 and the fourth sensor 24 are respectively disposed on both sides of the second sensor 22 along the second direction, the height of the third sensor 23 along the second direction is greater than that of the fourth sensor 24, the height of the fifth sensor 25 along the second direction is greater than that of the sixth sensor 26, and the fifth sensor 25 and the first sensor 21 are respectively disposed on both sides of the second sensor 22 along the first direction.

[0045] Since each sensor is used to detect the spraying amount at each position of the windshield 4, the spraying liquid amount detected by the first sensor 21 is V1, the spraying liquid amount detected by the second sensor 22 is V2, the spraying liquid amount detected by the third sensor 23 is V3, the spraying liquid amount detected by the fourth sensor 24 is V4, the spraying liquid amount detected by the fifth sensor 25 is V5, and the spraying liquid amount detected by the sixth sensor 26 is V6.

[0046] To ensure the minimum amount of moisture on the windshield 4, based on the monitored spray volume on the windshield 4, when V1, V2, V3, V4, V5, and V6 are all less than a minimum preset volume Vmin, meaning the amount of water on the windshield 4 is less than the set minimum coverage value, the controller 6 controls the opening of the regulating valve 122 to increase, thereby increasing the amount of spray liquid. Conversely, to avoid unnecessary waste caused by excessive spray liquid on the windshield 4, when V1, V2, V3, V4, V5, and V6 are all greater than a maximum preset volume Vmax, meaning the amount of water on the windshield 4 is greater than the set maximum coverage value, the controller 6 controls the opening of the regulating valve 122 to decrease, thereby reducing the amount of spray liquid.

[0047] For the adjustment of the first nozzle 31, the spray liquid volume V1 detected by the first sensor 21 is compared with the spray liquid volume V2 detected by the second sensor 22. If the values of V1 and V2 differ greatly, when V1 is less than 1 / 3*V2, the first nozzle 31 adjusts the angle of the spray liquid along the first direction away from the second nozzle 32, that is, the first nozzle 31 moves to the left to compensate for the spray volume at the left side of the windshield 4, until the spray liquid volume V1 detected by the first sensor 21 is the same as the spray liquid volume V2 detected by the second sensor 22.

[0048] The second nozzle 32 is adjusted by comparing the spray liquid volume V2 detected by the second sensor 22, the spray liquid volume V3 detected by the third sensor 23, and the spray liquid volume V4 detected by the fourth sensor 24. When V3 < V2 < V4, i.e., the values of V3, V2, and V4 increase in sequence, the second nozzle 32 adjusts the angle of spraying the spray liquid along the second direction toward the third sensor 23. In other words, the second nozzle 32 needs to move upward to compensate for the spray volume at the upper position of the windshield 4. Correspondingly, when V3 > V2 > V4, i.e., the values of V3, V2, and V4 decrease in sequence, the second nozzle 32 adjusts the angle of spraying the spray liquid along the second direction away from the third sensor 23. In other words, the second nozzle 32 needs to move downward to compensate for the spray volume at the lower position of the windshield 4.

[0049] For the adjustment of the third nozzle 33, the spray liquid volume V5 detected by the fifth sensor 25 is compared with the spray liquid volume V6 detected by the sixth sensor 26. If the values of V5 and V6 differ greatly, when V5 is less than 1 / 3*V6, the third nozzle 33 adjusts the angle of spraying the spray liquid along the second direction toward the direction close to the fifth sensor 25, that is, the third nozzle 33 will move upward to compensate for the spray volume at the upper position of the windshield 4 until the spray liquid volume V5 detected by the fifth sensor 25 and the spray liquid volume V6 detected by the sixth sensor 26 are the same.

[0050] like Figure 5 As shown, the steps of the spray control method provided in this embodiment are as follows:

[0051] S1. Obtain the spray liquid volume V1 detected by the first sensor 21, the spray liquid volume V2 detected by the second sensor 22, the spray liquid volume V3 detected by the third sensor 23, the spray liquid volume V4 detected by the fourth sensor 24, the spray liquid volume V5 detected by the fifth sensor 25, and the spray liquid volume V6 detected by the sixth sensor 26;

[0052] S2. Determine whether V1, V2, V3, V4, V5, and V6 are all less than the minimum preset value Vmin. If so, execute S3; if not, execute S4.

[0053] S3, the opening of the control valve 122 becomes larger;

[0054] S4, determining whether V1, V2, V3, V4, V5 and V6 are all greater than the maximum preset value Vmax, if so, executing S5, if not, executing S61, S62 and S63 simultaneously;

[0055] S5, controlling the opening of the regulating valve 122 to become smaller;

[0056] S61. Determine whether V1 is less than 1 / 3*V2. If so, execute S611. If not, return to S1.

[0057] S611, the first nozzle 31 adjusts the angle of spraying the spray liquid along the first direction away from the second nozzle 32;

[0058] S612: Determine whether V1 is greater than or equal to V2. If so, execute S613; if not, return to S61.

[0059] S613: The first nozzle 31 stops adjusting along the first direction away from the second nozzle 32 and sprays the spray liquid according to the current angle, and returns to S1;

[0060] S62: Determine whether the values of V3, V2, and V4 increase in sequence. If so, execute S621; if not, execute S622.

[0061] S621: The second nozzle 32 adjusts the angle of spraying the spray liquid along the second direction toward the third sensor 23;

[0062] S622: Determine whether the values of V3, V2, and V4 decrease in sequence. If so, execute S623; if not, execute S624.

[0063] S623: The second nozzle 32 adjusts the angle of spraying the spray liquid along the second direction away from the third sensor 23;

[0064] S624: Determine whether V3, V2, and V4 are the same. If so, execute S625; if not, return to S62.

[0065] S625: The second nozzle 32 stops adjusting along the second direction and sprays the spray liquid according to the current angle;

[0066] S63. Determine whether V5 is less than 1 / 3*V6. If so, execute S631. If not, return to S1.

[0067] S631: The third nozzle 33 adjusts the angle of spraying the spray liquid along the second direction toward the direction close to the fifth sensor 25;

[0068] S632: Determine whether V5 is greater than or equal to V6. If so, execute S633; if not, return to S63.

[0069] S633: The third nozzle 33 stops adjusting along the second direction and sprays the spray liquid according to the current angle.

[0070] This embodiment also provides a wiper testing system, comprising a spray device and a testing device. The testing device is located on one side of the spray device and is used to test the wiper blade performance. The spray device comprises a liquid supply mechanism 1, a detection mechanism 2, and a spray mechanism 3. The liquid supply mechanism 1 is disposed within the vehicle and is used to provide spray liquid. The detection mechanism 2 is disposed on the inside of the vehicle's windshield 4 and is used to detect the amount of spray liquid applied to the windshield 4. The spray mechanism 3 is disposed on the vehicle's hood 5 and is connected to the liquid supply mechanism 1. The spray mechanism 3 adjusts the angle and amount of spray liquid applied to the windshield 4 based on the amount of spray liquid applied to the windshield 4.

[0071] The wiper test system of this embodiment, equipped with a spray device, can be installed in a wind tunnel laboratory, mounted on a vehicle, or used in simulated wind tunnel experiments on a high-speed track. Adjustments can be made to suit different vehicle models, resulting in high versatility. Furthermore, the wiper test system is easy to install, facilitates experimental observation and adjustment, and can be reused to save experimental costs and improve experimental efficiency.

[0072] In the description herein, it should be understood that the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0073] In this specification, reference to terms such as "one embodiment" or "example" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0074] Furthermore, the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are possible for those skilled in the art without departing from the scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A spraying device, characterized in that: include: A liquid supply mechanism (1) is provided in the vehicle and is used to provide spray liquid; A detection mechanism (2) is arranged on the inner side of the windshield (4) of the automobile and is used to detect the amount of spray liquid on the windshield (4); A spray mechanism (3) is provided on the hood (5) of the automobile and is connected to the liquid supply mechanism (1). The spray mechanism (3) adjusts the angle and amount of spraying liquid onto the windshield (4) according to the amount of spraying liquid on the windshield (4); A main wiper area (41) and a secondary wiper area (42) are provided on the windshield (4) of the automobile; The detection mechanism (2) comprises a first sensor (21) and a second sensor (22), wherein the first sensor (21) is located in the windshield wiper area sub-area (42), and the second sensor (22) is located in the windshield wiper area main area (41), and the first sensor (21) and the second sensor (22) are at the same height along the second direction; The detection mechanism (2) further comprises a third sensor (23) and a fourth sensor (24) both located in the windshield wiper area sub-region (42), the third sensor (23) and the fourth sensor (24) being respectively arranged on both sides of the second sensor (22) along the second direction, and the height of the third sensor (23) along the second direction being greater than the height of the fourth sensor (24); The detection mechanism (2) further includes a fifth sensor (25) and a sixth sensor (26) both located in the windshield wiper area sub-region (42), the height of the fifth sensor (25) along the second direction being greater than the height of the sixth sensor (26), the fifth sensor (25) and the first sensor (21) being respectively arranged on both sides of the second sensor (22) along the first direction, wherein the first direction and the second direction are perpendicular to each other; The spray mechanism (3) includes a first nozzle (31), and according to the amount of spray liquid detected by the first sensor (21) and the second sensor (22), the first nozzle (31) adjusts the angle of spraying the spray liquid along the first direction and sprays the spray liquid toward the wiper area sub-region (42); The spray mechanism (3) includes a second nozzle (32), and according to the amount of spray liquid detected by the second sensor (22), the third sensor (23), and the fourth sensor (24), the second nozzle (32) adjusts the angle of spraying the spray liquid along the second direction and sprays the spray liquid toward the main area (41) of the wiper area; The spray mechanism (3) includes a third nozzle (33), wherein the third nozzle (33) and the first nozzle (31) are respectively arranged on both sides of the second nozzle (32) along the first direction. According to the amount of spray liquid detected by the fifth sensor (25) and the sixth sensor (26), the third nozzle (33) adjusts the angle of spraying the spray liquid along the second direction and sprays the spray liquid toward the main area (41) of the wiper area.

2. The spraying device according to claim 1, characterized in that The liquid supply mechanism (1) comprises a water tank (11), which is arranged in the trunk of the car or on the rear seats, and is used to contain the spray liquid.

3. The spraying device according to claim 2, characterized in that The liquid supply mechanism (1) further comprises an infusion assembly (12), wherein the infusion assembly (12) is arranged in the passenger compartment of the automobile, and the infusion assembly (12) is respectively connected to the water tank (11) and the spray mechanism (3), and is used for delivering the spray liquid in the water tank (11) to the spray mechanism (3).

4. The spraying device according to claim 3, characterized in that The infusion assembly (12) comprises a water pump (121), which is connected to the water tank (11) and the spray mechanism (3) respectively. The water pump (121) draws the spray liquid in the water tank (11) into the spray mechanism (3).

5. The spraying device according to claim 4, characterized in that: The infusion assembly (12) further comprises a valve (122), which is arranged between the water pump (121) and the spray mechanism (3), and the opening of the valve (122) is used to adjust the size of the spraying amount.

6. The spraying device according to claim 5, characterized in that: The infusion assembly (12) further includes a flow meter (123), which is arranged between the valve (122) and the spray mechanism (3) and is used to detect the flow rate of the spray liquid.

7. A spray control method, characterized in that: The spray control method controls a spray device, and the spray device includes: A liquid supply mechanism (1) is provided in the vehicle and is used to provide spray liquid; A detection mechanism (2) is arranged on the inner side of the windshield (4) of the automobile and is used to detect the amount of spray liquid on the windshield (4); a spray mechanism (3) disposed on the hood (5) of the automobile and connected to the liquid supply mechanism (1); The spray control method comprises the following steps: obtaining the spray amount on the windshield (4); and according to the spray amount, the spray mechanism (3) adjusts the angle and spray amount of spraying liquid toward the windshield (4); The spray mechanism (3) comprises a first nozzle (31), a third nozzle (33), and a second nozzle (32) arranged between the first nozzle (31) and the third nozzle (33); The detection mechanism (2) comprises a first sensor (21), a second sensor (22), a third sensor (23), a fourth sensor (24), a fifth sensor (25) and a sixth sensor (26); the first sensor (21) and the second sensor (22) have the same height along the second direction; the third sensor (23) and the fourth sensor (24) are respectively arranged on both sides of the second sensor (22) along the second direction; the height of the third sensor (23) along the second direction is greater than the height of the fourth sensor (24); the height of the fifth sensor (25) along the second direction is greater than the height of the sixth sensor (26); the fifth sensor (25) and the first sensor (21) are respectively arranged on both sides of the second sensor (22) along the first direction; wherein the first direction and the second direction are perpendicular to each other.

8. The spray control method according to claim 7, characterized in that: Comparing the spray liquid volume V1 detected by the first sensor (21) with the spray liquid volume V2 detected by the second sensor (22), when V1 < 1 / 3*V2, the first nozzle (31) adjusts the angle of spraying the spray liquid along the first direction toward a direction away from the second nozzle (32).

9. The spray control method according to claim 8, characterized in that: Comparing the spray liquid volume V2 of the second sensor (22), the spray liquid volume V3 of the third sensor (23) and the spray liquid volume V4 detected by the fourth sensor (24), when V3 < V2 < V4, the second nozzle (32) adjusts the angle of spraying the spray liquid along the second direction toward the direction close to the third sensor (23).

10. The spray control method according to claim 9, characterized in that: When V3>V2>V4, the second nozzle (32) adjusts the angle of spraying the spray liquid along the second direction in a direction away from the third sensor (23).

11. The spray control method according to claim 10, characterized in that: Comparing the spray liquid volume V5 detected by the fifth sensor (25) with the spray liquid volume V6 detected by the sixth sensor (26), when V5 < 1 / 3*V6, the third nozzle (33) adjusts the angle of spraying the spray liquid along the second direction toward the direction close to the fifth sensor (25).

12. The spray control method according to claim 11, characterized in that: The infusion assembly (12) of the liquid supply mechanism (1) comprises a water pump (121) and a valve (122). The water pump (121) is connected to the liquid supply mechanism (1), and the valve (122) is arranged between the water pump (121) and the spray mechanism (3).

13. The spray control method according to claim 12, characterized in that: When V1, V2, V3, V4, V5 and V6 are all less than the minimum preset amount Vmin, the opening of the valve (122) is adjusted to become larger.

14. The spray control method according to claim 13, characterized in that: When V1, V2, V3, V4, V5 and V6 are all greater than the maximum preset amount Vmax, the opening of the valve (122) is adjusted to become smaller.

15. A wiper test system, characterized in that: The invention comprises a testing device and the spraying device according to any one of claims 1 to 6, wherein the testing device is located on one side of the spraying device and is used to detect the wiper blade performance of the wiper.

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