Water spray tester and water spray test method

Abstract

The application discloses a water spraying tester and a water spraying test method, and relates to the field of building detection.The method comprises the following steps: a host box body;an execution spraying module which is connected with the host box body and comprises a water spraying rod, a water spraying pipe connected with the host box body and the water spraying rod, and a pressure gauge and a flowmeter located at the water inlet end of the water spraying rod;an attachment connecting module;amobile positioning module which comprises an automatic lifting frame and a traction rope;an identification sensing module which comprises a camera; a water source supply module which is used for supplying spraying water for the host box body; and a main control power module which is electrically connected with the execution spraying module, the mobile positioning module, the identification sensing module and the water source supply module.The pressure gauge, the flowmeter and the camera are integrated on the water spraying pipe, so that the detection process can be accurately controlled by the main control power module, including the stable water supply of the water source supply module and the stable movement of the water spraying rod of the mobile positioning module.

Description

Technical Field

[0001] This application relates to the field of building testing technology, and in particular to a water spray test instrument and a water spray test method. Background Technology

[0002] With the continuous advancement of urbanization and the expansion of residential construction, the quality of residential projects, especially the waterproofing performance of the building envelope, has become an important aspect of project quality acceptance and residential quality evaluation. Among these, exterior windows and exterior walls are among the most prone to leakage in the building envelope, and their waterproofing performance directly affects the building's functionality, durability, and living comfort.

[0003] Current engineering construction standards and quality acceptance specifications clearly stipulate requirements for the waterproofing performance of exterior windows and walls. For example, during the final acceptance and sub-project quality acceptance of residential projects, key inspections are typically conducted on the installation quality of exterior windows, the sealing condition of the connection between the window frame and the wall, and the waterproofing structure of the exterior wall finishing system. Water spray tests are used to verify their waterproofing performance under simulated natural rainfall conditions. Relevant specifications generally emphasize that on-site testing should be used to verify whether leakage occurs in exterior windows (walls) under certain water pressure, volume, and duration conditions. This is to effectively prevent and control the common quality problem of leakage in residential exterior windows (walls) and ensure the construction quality of waterproofing projects for exterior windows (walls) in newly built residential buildings.

[0004] On the other hand, with the improvement of people's living standards and the upgrading of housing needs, the requirements for housing quality are constantly increasing. Residents' concern about the waterproofing performance of buildings has shifted from basically no leakage to long-term reliability and no hidden dangers during use. Once leakage occurs in exterior windows and exterior walls, it will not only cause damage to interior decoration and affect normal use, but may also lead to a series of problems such as insulation layer failure, reduced structural durability, and neighborhood disputes, seriously affecting the overall quality of the residence and the living experience. Therefore, conducting more scientific, standardized, and repeatable testing of the waterproofing performance of exterior windows and exterior walls during the construction and quality acceptance stages has become an important technical link in improving the quality of residential projects.

[0005] However, in actual engineering quality inspection and acceptance processes, water spray tests on exterior windows / walls still commonly suffer from problems such as inconsistent testing conditions, reliance on manual experience in operation, difficulty in precisely controlling the spraying method and water volume, and insufficient repeatability and objectivity of test results. This, to some extent, affects the accuracy of waterproofing performance assessment and the scientific rigor of engineering quality judgment, making it difficult to meet the requirements of refined management and high-quality delivery in current residential engineering projects. Summary of the Invention

[0006] Therefore, it is necessary to provide a water spray test instrument and water spray test method to address the above-mentioned technical problems. This method can quantitatively and controllably test the waterproof performance of exterior windows and exterior walls during the quality acceptance stage of building projects, effectively prevent and control the common quality problem of leakage of exterior windows / exterior walls in residential projects, and meet the requirements of relevant standards and specifications for water spray test conditions.

[0007] In a first aspect, this application provides a water spray test apparatus, comprising:

[0008] Main unit chassis;

[0009] The spray module is connected to the main unit housing. The spray module includes a spray bar, a spray pipe connecting the main unit housing and the spray bar, and a pressure gauge and flow meter located at the water inlet end of the spray bar. Several spray holes are distributed on the spray bar.

[0010] The connection accessory module includes a quick connector that connects the water spray pipe and the water spray bar, and a water distributor that connects the main unit housing to at least two water spray pipes;

[0011] The mobile positioning module is used to control the raising and lowering of the water spray bar along the building's exterior wall / window. The mobile positioning module includes an automatic lifting frame and a traction rope with its fixed end wound around the automatic lifting frame and its free end connected to the water spray bar.

[0012] The sensing and recognition module is fixed on the water spray bar and includes a camera;

[0013] The water supply module is used to supply spray water to the main unit enclosure;

[0014] The main control power module is located inside the main unit housing and is electrically connected to the spray execution module, mobile positioning module, sensing and identification module, and water supply module.

[0015] In one embodiment, each end of the water spray bar is connected to an independent traction rope, and the automatic lifting frame uses a double-drum winch mechanism to synchronously operate the traction ropes at both ends of the water spray bar.

[0016] In one embodiment, the sensing and recognition module further includes an attitude sensor for real-time detection of the water spray bar's attitude.

[0017] In one embodiment, rollers that roll along the building's exterior walls / windows are provided at both ends of the water spray bar.

[0018] In one embodiment, the spray bar is provided with a spray direction adjustment mechanism, including an electric rotary joint, and the spray direction adjustment mechanism is electrically connected to the main control power module.

[0019] In one embodiment, locking sleeves are provided at both ends of the water spraying rod to form a locking structure with the traction rope.

[0020] In one embodiment, the water supply module includes a portable water tank and a float valve, and the main control power module includes a power pump. The portable water tank and the power pump are connected by a suction pipe.

[0021] In one embodiment, a flow control valve is provided on the main unit housing, and a water immersion sensor is provided at the bottom of the housing.

[0022] Secondly, this application also provides a water spray detection method, based on the water spray tester in the above embodiments, the method comprising:

[0023] The system acquires images captured by cameras, identifies key building components based on an AI visual recognition model, and obtains the coordinates of key points.

[0024] The depth information of the image is obtained, and combined with the camera intrinsic parameters and the attitude data of the water spray bar, the coordinates of the key points are transformed into three-dimensional spatial coordinates with the camera as the origin. The distance and angle between the spray point and the target water spray area are obtained based on the three-dimensional spatial coordinates.

[0025] Based on distance and angle, the water spray bar is moved to the target water spray area via a mobile positioning module.

[0026] The aforementioned water spray test apparatus and water spray test method include: a main unit housing; a spray execution module connected to the main unit housing, the spray execution module including a spray rod, a spray pipe connecting the main unit housing and the spray rod, and a pressure gauge and flow meter located at the water inlet end of the spray rod, with several spray holes distributed on the spray rod; a connection accessory module including a quick connector connecting the spray pipe and the spray rod, and a water distributor connecting the main unit housing to at least two spray pipes; a motion positioning module for controlling the spray rod to rise and fall along the building's exterior wall / window, the motion positioning module including an automatic lifting frame, and a traction rope with its fixed end wound around the automatic lifting frame and its free end connected to the spray rod; a sensing and identification module fixed to the spray rod, the sensing and identification module including a camera; a water supply module for supplying spray water to the main unit housing; and a main control power module located inside the main unit housing, electrically connected to the spray execution module, the motion positioning module, the sensing and identification module, and the water supply module. The water spray pipe is equipped with a pressure gauge and a flow meter, which can monitor the water supply flow and outlet pressure in real time. At the same time, the camera can collect images of the spray position in real time, so that the main control power module can accurately control the detection process, including controlling the stable water supply of the water source module and controlling the stable movement of the water spray bar by the mobile positioning module. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall architecture of the water spray test instrument in a single water spray pipe embodiment.

[0028] Figure 2 for Figure 1 The schematic diagram of the water spray test apparatus in the embodiment shown is as follows;

[0029] Figure 3 This is a schematic diagram of the overall architecture of the water spray test instrument in the two-way water spray pipe embodiment.

[0030] Figure 4 for Figure 3 The schematic diagram of the water spray test apparatus in the embodiment shown is as follows;

[0031] Figure 5 This is a schematic diagram of the structure of two water distributors in one embodiment;

[0032] Figure 6 This is a schematic diagram of the structure of the spray module in one embodiment;

[0033] Figure 7 This is a schematic diagram of the structure of an automatic lifting frame in one embodiment;

[0034] Figure 8 This is a right view of the main unit chassis in one embodiment;

[0035] Figure 9 This is a left view of the main unit chassis in one embodiment;

[0036] Figure 10 This is a schematic diagram of the actual on-site setup of the water spray test apparatus in one embodiment;

[0037] Reference numerals: 1. Touchscreen; 2. Indicator light; 3. Power knob; 4. USB interface; 5. Casters; 6. Outlet; 7. Inlet; 8. First outlet pipe; 9. Second pressure gauge; 10. First roller; 11. First spray bar; 12. Second roller; 13. Main unit housing; 14. Portable water tank; 15. Float valve; 16. Third roller; 17. Second spray bar; 18. Fourth roller; 19. Second outlet pipe; 20. Second pressure gauge; 21. Inlet pipe; 22. One-in-two-outlet water distributor; 23. Handle; 24. Power cord; 25. Flow control valve; 26. Spray hole; 27. One-in-three-outlet water distributor; 28. Automatic lifting frame; 29. ​​Camera; 30. Water immersion sensor. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0039] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0040] See Figure 1 Figure 1 shows an overall framework diagram of the water spray test apparatus according to an embodiment of this application. The water spray test apparatus provided in this embodiment includes: a main unit housing I, a first execution spray module II, and a water supply module III. The water supply module supplies spray water to the main unit housing, which is then sprayed onto the exterior walls or windows of the building via the first execution spray module II to complete the water spray test.

[0041] like Figure 2 As shown, the main unit housing 13 includes a water inlet 7 and a water outlet 6. The water inlet 7 is connected to the water supply module, and the water outlet 6 is connected to the first spraying module.

[0042] The first spraying module includes a first spray pipe 8, a first spray rod 11, and a first pressure gauge 9. The first spray rod 11 has several spray holes 26 spaced along its length to form a uniform and continuous water curtain. The first pressure gauge 9 is located at the water inlet end of the first spray rod 11 to monitor the spray inlet pressure in real time. The first spray pipe 8 is approximately 10 to 15 meters long, and quick connectors are installed at both ends. These quick connectors are connection accessory modules; one end connects to the water outlet 6 on the main unit housing 13, and the other end connects to a first spray rod 11 approximately 2 meters long. The first spray rod 11 has spray holes 26 with a diameter of approximately 3 mm, spaced approximately 180 mm to 220 mm apart. A quick connector is installed in the middle of the first spray rod 11 to connect to the first spray pipe 8; each first spray pipe 8 is connected to one spray rod. The quick connectors include various standard types and are mainly used to adapt to water pipe interfaces of different sizes.

[0043] In one embodiment, a flow meter is also installed on the first water spray pipe 8 to facilitate real-time monitoring of the water spray volume.

[0044] The water supply module includes a portable water tank 14 and a float valve 15. The portable water tank 14 is connected to an external water source and is connected to the water inlet 7 of the main unit housing 13 via a suction pipe 21. The float valve 15 is installed inside the portable water tank 14 and is used to automatically control the opening and closing of the water inlet according to the water level in the portable water tank 14 to maintain a constant water level. The portable water tank 14 is generally a collapsible water tank or a water storage tank, mainly used for supplying water. Before starting the test, the portable water tank 14 is filled with water. One end of the suction pipe 21 is directly inserted into the portable water tank 14, or the suction pipe 21 is connected to the portable water tank 14 to perform the water suction operation. The other end of the portable water tank 14 is connected to a fire water tank or other water source. The float valve 15 controls the water intake of the portable water tank 14. When the tank is full, the float valve 15 closes to flush; when the tank is low on water, the float valve 15 opens to fill the portable water tank 14 with water.

[0045] In one embodiment, to improve spraying efficiency, the water spray testing instrument can allow multiple water spray pipes to operate simultaneously. For example... Figure 3 and 4 As shown, taking a two-way spray pipe as an example, the spray test instrument in this embodiment includes: a main unit housing I, a first spray module II, a second spray module IV, and a water supply module III. The second spray module is structurally identical to the first spray module, including a second spray pipe 19, a second spray rod 17, and a second pressure gauge 20. The difference between the two-way spray pipe embodiment and the single-way spray pipe embodiment is that the two-way spray pipe embodiment includes a connecting accessory module. In addition to quick connectors, the connecting accessory module includes a water distributor. The water distributor has one inlet and multiple outlets. The inlet is connected to the outlet 6 of the main unit housing 13, and each outlet is connected to multiple spray pipes, enabling parallel water supply from a single main unit housing 13 to multiple spray modules.

[0046] A typical system can be equipped with 1 to 3 sets of water spray pipes and spray bars. Water distributors come in different specifications depending on the number of drain outlets. For example... Figure 5 As shown, there are two specifications of water distributors. The one on the left is a water distributor with one inlet and two outlets, and the one on the right is a water distributor with one inlet and three outlets, 27. When the main unit housing 13 needs to connect two or more water spray pipes, a water distributor is required. The water inlet is connected to the water outlet 6 on the main unit housing 13 through a quick connector, and the drain outlet is connected to each water pipe through a quick connector.

[0047] like Figure 6 The image shown is a detailed view of the spray module. In one embodiment, the water spray tester includes a sensing and recognition module, comprising a visual camera 29 mounted on the spray bar for acquiring real-time images of the building's exterior walls or windows.

[0048] In one embodiment, the water spray test apparatus further includes a motion positioning module, which comprises an automatic lifting frame 28 and a traction rope. The automatic lifting frame 28 is fixedly installed on the building roof or parapet wall, typically consisting of... Figure 7 The system consists of a triangular support bracket and a rotating shaft mounted on top of the two brackets. The shaft is driven to rotate by a rotary motor. One end of the traction rope is fixedly connected to the water spray bar, and the other end is wound around a roller on the automatic lifting frame 28. During the spray test, the rotating shaft can be controlled by the rotary motor to transport or retrieve the traction rope according to the current position of the water spray bar and the area requiring spraying. This automatically raises and lowers the water spray bar, enabling it to move up and down along the building facade and stop at designated points, ensuring the spraying position meets standard requirements.

[0049] In one embodiment, a guide pulley assembly is installed on the parapet wall of the roof or the top of the facade to guide the traction rope, and anti-sway stabilizers are added to both ends of the water spray bar, including a damping spring device, a magnetic guide rail and a pneumatic buffer, to absorb tension fluctuations, limit lateral sway and reduce impact.

[0050] To further ensure stable raising and lowering of the water spray bar, independent traction ropes are installed at both ends of the water spray bar, and a dual-rope synchronous control mechanism is adopted. The dual winch system in the automatic lifting frame 28, together with the encoder, monitors the changes in the rope length at both ends in real time, and achieves synchronous raising and lowering through PID algorithm to prevent the water spray bar from tilting or getting stuck.

[0051] The water spray bar has rollers at both ends that roll along the building's exterior walls / windows. For example... Figure 2 and Figure 4 In the single-channel water spray pipe embodiment, the first water spray rod 11 has a first roller 10 and a second roller 12 at both ends. In the dual-channel water spray pipe embodiment, the first water spray rod 11 has a first roller 10 and a second roller 12 at both ends, and the second water spray rod 17 has a third roller 16 and a fourth roller 18 at both ends. When the moving positioning module drives the water spray rod to rise and fall, the rollers directly contact and roll with the building facade, reducing movement resistance and protecting the water spray rod from direct collision with the building facade. The rollers can be connected to the water spray rod via bearings, so that when the water spray pipe moves vertically under the traction of the traction rope, the rollers roll along the building facade.

[0052] In one embodiment, locking sleeves are provided at both ends of the water-spraying rod, forming a locking structure with the traction rope. Common types of locking sleeves include ratchet binding straps, threaded locking sleeves, and self-locking fall arrestors. The locking sleeves are used to prevent the water-spraying rod from falling during operation via the traction rope.

[0053] In one embodiment, the water spray bar is further equipped with a spray direction adjustment mechanism, including an electric central rotary joint, for adjusting the spray direction of the water spray bar to adapt to different wall inclination angles and component types, ensuring that the water flow is sprayed vertically to the target area. The water spray bar is divided into a fixed section and a rotating section, connected by a central rotary joint, allowing the rotating section of the spraying part to rotate independently, while the suspension point of the traction rope on the fixed section remains stable. To ensure that the fixed section and the rotating section remain relatively stationary after rotation, an indexing locking device is required between the fixed section and the rotating section, such as multiple indexing teeth arranged circumferentially along the water spray bar and positioning teeth that mesh with the indexing teeth.

[0054] In one embodiment, a posture sensor is integrated on the water spray bar to monitor the tilt angle and sway amplitude of the water spray bar in real time. When an abnormal posture is detected, the speed or direction of the two independent traction ropes is adjusted to ensure uniform spraying.

[0055] In one embodiment, the water spray tester also includes a main control power module integrated within the main unit housing 13. The main control power module includes a control unit and a power unit. The control unit, electrically connected to the motion positioning module, sends a drive signal to the rotary motor to rotate and drive the traction rope to raise and lower the water spray bar; it is connected to a pressure gauge and a flow meter to receive water pressure and flow data; and it is connected to a camera 29 to receive image data of the exterior wall surface. The power unit includes a power pump, which continuously draws water from the water inlet 7 of the main unit housing 13 through the suction pipe 21, pressurizes the water, and outputs it from the water outlet 6 of the main unit housing 13, ultimately spraying it onto the building facade from the water spray bar.

[0056] like Figure 8 and 9 As shown, the main unit housing 13 includes a power knob 3, a touch screen 1, indicator lights 2, a USB interface 4, a power cord 24, a water outlet 6, a water inlet 7, a flow control valve 25, and a handle 23. Casters 5 are installed at the bottom of the main unit housing 13, allowing it to move freely. The power knob 3 is mainly used for switching the main unit housing 13 on and off. After the power cord 24 is plugged in, pressing the power switch will power on the main unit housing 13, illuminating the touch screen 1. The touch screen 1 is mainly used for starting the system, inputting control parameters, displaying real-time operating parameters, controlling the automatic lifting frame 28, and displaying images captured by the camera 29. The touch screen 1 displays a start control button, mainly used to start the entire system, including components such as the power pump, enabling the system to operate. Input control parameters include project information, water flow rate, and water pressure. Real-time operating parameters mainly include water flow rate and water pressure.

[0057] A water immersion sensor 30 is installed on the bottom wall of the main unit housing 13. If water leakage occurs due to reasons such as leakage of the portable water tank 14, the water immersion sensor 30 at the bottom of the main unit housing 13 will immediately send an alarm signal when it detects the leakage, such as the indicator light 2 flashing, the touch screen 1 displaying an indicator light, and will stop the water spraying operation to prevent losses caused by water leakage indoors.

[0058] like Figure 10 The diagram shows a schematic of the on-site operation of the water spray tester. Taking its deployment on a building roof as an example: Before the test begins, the main unit housing 13, water spray pipes, water spray rods, water distributor, suction pipe 21, portable water tank 14, and supporting components such as quick connectors and traction ropes are transported to the building roof. A flat, safe, and easily accessible location on the roof is chosen to place the main unit housing 13 and the water tank. Subsequently, the portable water tank 14 or the water outlet bucket is filled with clean water, and the water tank inlet is connected to a fire hydrant or other water source to ensure a sufficient water supply to meet the continuous water supply requirements throughout the entire testing cycle.

[0059] Connect one end of the water suction pipe 21 to the water inlet 7 of the main unit housing 13, and place the other end into the portable water tank 14 or the water outlet bucket, keeping the suction end completely submerged in water to prevent air from entering the pipe and affecting the stability of the system operation.

[0060] Taking the simultaneous use of two sets of water spray pipes and spray rods for testing as an example, a one-in-two-out water distributor is installed at the outlet 6 of the main unit housing 13 via a quick connector. The inlet 7 of the water distributor is reliably connected to the outlet 6 of the main unit housing 13, and its two outlets 6 are respectively connected to one end of the two water spray pipes via quick connectors. The other end of each water spray pipe is then connected to the corresponding spray rod via quick connectors, forming two independent water spray circuits that are supplied with water by the same main unit.

[0061] Each water spray bar has a locking mechanism at both ends, with a traction rope fixedly connected to each lock. The traction rope is used to pull, lower, position, and retrieve the water spray bar via the automatic lifting frame 28 at the roof end, facilitating precise placement of the water spray bar on windows or exterior walls at different heights and locations.

[0062] An automatic lifting frame 28 is fixedly installed at the parapet wall of the building roof using anchor bolts. The traction rope is wound around the rollers of the automatic lifting frame 28 to realize the delivery and retrieval of the traction rope.

[0063] After completing the above connections, inspect all quick couplings and pipe connections to ensure that the connections are secure and the seals are reliable, and to prevent leaks or detachment during the test.

[0064] After the system is installed, turn on the power to the main unit 13. Manually set the action of the automatic lifting frame 28 on the touch screen 1 of the main unit 13 so that the automatic lifting frame 28 delivers the traction rope and slowly lowers the water spray bar. By observing the image transmitted back by the visual camera 29 on the water spray bar, the water spray bar is lowered to the first water spray point. At this time, the visual camera 29 can also automatically identify the water spray position to ensure that the water spray range covers key leak-prone areas such as the outer window frame, window sash, the connection between the window frame and the wall, and the joints of the outer wall cladding.

[0065] After the initial setup of the water spray bar is completed, the required operating parameters for testing are set on the touch screen 1 operating interface of the main unit 13, including parameters such as water flow rate, outlet water pressure, and water spraying time for a single test point. The above parameters can be set according to the relevant engineering quality acceptance specifications or testing plan requirements to ensure the standardization and consistency of the test conditions.

[0066] After the parameters are set, the operator clicks the start button on the touchscreen 1, and the system enters automatic operation mode.

[0067] After the system starts, the power pump inside the main unit housing 13 begins operation, continuously drawing water from the inlet 7 of the main unit housing 13 through the suction pipe 21, pressurizing the water, and outputting it from the outlet 6 of the main unit housing 13. The pressurized water is distributed by the one-in-two-outlet water distributor 22, and delivered to two spray pipes, and then transmitted to their respective spray rods through pipelines. The control unit inside the main unit housing 13 drives the automatic lifting frame 28 to move the spray rod to the next spray point. This process repeats until the water finally sprays out from the evenly distributed spray holes 26 on the spray rod, forming a continuous and stable water curtain, quantitatively and pressureily spraying water onto the surface of the exterior window or exterior wall, thereby simulating the water-receiving state of the exterior window and exterior wall under rainfall conditions, and realizing the waterproof performance test. During the test, the system can maintain a stable output of flow rate and pressure, ensuring that the conditions are consistent throughout the water spray test process, and that the results are comparable and repeatable.

[0068] In one embodiment, the control flow executed by the host chassis is as follows:

[0069] S1, System Initialization: Parameter settings (target pressure upper and lower limits 0.30 / 0.31MPa, PID parameters, initial value of pressure reducing valve opening, fault threshold, etc.), hardware self-test (whether the water pump, controller, flow meter, pressure gauge, and pressure reducing valve are normal); if the self-test is abnormal, proceed to S2, otherwise proceed to S3.

[0070] S2, alarm and shutdown.

[0071] S3. Detect the initial pressure (static pressure when the water pump is not running, i.e., the pressure due to its own weight) P_static of the pressure gauge at the end of the water spray bar;

[0072] If P_static < 0.30 MPa, the water pump needs to run, entering PID control mode. First, the water pump is started (low-frequency initial operation), and the terminal pressure P_real is collected in real time. Next, the PID calculation adjusts the water pump frequency based on the deviation between P_real and the target value (the median value of 0.305 MPa). Finally, it is determined whether P_real is within 0.30~0.31 MPa: if yes, the current frequency is maintained and monitoring continues; if not, PID control continues (if too high, the frequency decreases; if too low, the frequency increases).

[0073] If P_static ≥ 0.30 MPa, the water pump stops and enters the pressure reducing valve adjustment mode. First, stop the water pump (ensure the pump is powered off / stopped) and collect the terminal pressure P_real in real time. Then, adjust the pressure reducing valve opening: if P_real > 0.31 MPa, increase the pressure reducing valve opening; if P_real < 0.30 MPa, decrease the pressure reducing valve opening; if P_real is within the range, maintain the pressure reducing valve opening.

[0074] S4. Under all states of S3, perform real-time anomaly monitoring synchronously. The monitored anomalies include:

[0075] 1. Pressure gauge malfunction (no reading, fluctuating readings);

[0076] 2. Flow meter malfunction (flow rate is 0 but pressure is normal, or flow rate is too high);

[0077] 3. Water pump malfunction (overload, overheating, inability to start / stop);

[0078] 4. Pressure reducing valve malfunction (no response to opening adjustment);

[0079] 5. Pressure exceeds the upper or lower limit;

[0080] 6. Water immersion sensor (normal operation when no water leakage is detected; operation stops when water leakage is detected).

[0081] S5. Abnormal Handling: Alarm (audio and visual), record fault information, and handle according to the fault type (such as emergency pressure relief for overpressure, and shutdown and switching to manual mode for water pump failure).

[0082] S6. Shutdown Logic: Manual shutdown command, test completion timeout, serious fault → stop water pump / close pipeline valve, reset pressure reducing valve, save test data.

[0083] The water spray testing instrument disclosed in this invention can detect the water supply flow rate and outlet pressure in real time using a pressure gauge and flow meter. Combined with the main control power module, it adjusts the output of the power pump to ensure the spraying method and spray volume. A sensing and identification module monitors the spraying area in real time, and, in conjunction with the main control power module, adjusts the movement control module to comprehensively detect overlooked areas or key leak-prone areas such as window frames, window sashes, the connection between window frames and walls, and the joints of exterior wall finishes, avoiding blind spots caused by uneven water spraying. In summary, this invention can achieve targeted and quantitative water spray testing of specified locations on windows or exterior walls to simulate the waterproof performance of windows and exterior walls under natural rainfall conditions.

[0084] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0085] In one embodiment, based on the above-described water spray test apparatus, a water spray test method is provided, comprising:

[0086] S1. Acquire images captured by the camera, identify key building components based on the AI ​​visual recognition model, and obtain the coordinates of key points.

[0087] The AI ​​visual recognition model is integrated into the main control power module, embedding a lightweight convolutional neural network model to identify and classify key components such as window frames, walls, and joints in the acquired images, and generate the spatial positioning coordinates of the sprinkler points. The touchscreen can display real-time images from the sprinkler bar cameras. The AI ​​visual model identifies the building facade, recognizes and classifies key features of building components, and employs the following two optional architectures:

[0088] 1. YOLOv5s: As an object detection network, it can simultaneously complete object localization and classification in one stage, with fast detection speed, making it suitable for real-time video stream processing. By adjusting the input resolution (e.g., 640×640) and the network depth factor, the model size can be compressed to a few MB while maintaining recognition accuracy, making it suitable for embedded platform deployment.

[0089] 2. MobileNetV3 + DeepLabV3+: Used for semantic segmentation tasks, it can classify each pixel in an image and accurately delineate the boundaries of regions such as window frames, walls, and seams. It combines an attention mechanism (SE module) and lightweight dilated convolutions to improve segmentation accuracy while maintaining low computational cost.

[0090] Before model training, inference is accelerated using TensorRT or OpenVINO, and quantization is performed to INT8 precision to further reduce latency. On embedded devices, the processing time for a single frame image can be controlled within 50ms, meeting the response requirements of real-time lifting control. To improve the model's ability to recognize building facade features, this invention constructs a dedicated sample library of building facade components, with sample sources including:

[0091] 1. On-site acquisition: Videos and images of the exterior facades of residential and public buildings taken under different seasons, weather, and lighting conditions; 2. Simulation generation: Renderings of building facades with different styles and structures are generated using 3D modeling software, and component categories are automatically labeled; 3. Data augmentation: Operations such as rotation, scaling, cropping, brightness adjustment, and noise addition are performed on the original images to simulate different camera angles and environmental changes.

[0092] The sample annotations cover the key building component categories shown in Table 1:

[0093] Table 1. Categories of Key Building Components Marked

[0094]

[0095] In this invention, the camera captures real-time video streams at a frame rate of 30fps, and performs distortion correction and scale normalization preprocessing on the images. Based on the preprocessed images, the AI ​​visual recognition model performs the following tasks:

[0096] S101, Target Detection: Identify the location of key areas such as window frames and seams, and output the coordinates and confidence scores in the form of bounding boxes;

[0097] S102, Semantic Segmentation: Classifies pixels in an image to accurately delineate component boundaries, especially suitable for recognizing slender seams or complex contours;

[0098] S103, Key Point Detection: Detects geometric feature points such as window frame corners and joint endpoints for subsequent 3D modeling and spray point coordinate calculation;

[0099] S104. Component Relationship Analysis: Identify the relative positional relationship between the window frame and the wall, and determine whether there are installation defects such as misalignment or gaps;

[0100] S105. Obstruction Detection: Identifies obstructions such as air conditioner outdoor units and security grilles, and is used to adjust the spray path or prompt manual intervention.

[0101] After inference by the AI ​​visual recognition model, the detection box, segmentation mask and key point coordinates are output, and then nonmaximum suppression and connected component analysis are performed to generate structured target data.

[0102] S2. Obtain the depth information of the image, combine it with the camera intrinsic parameters and the attitude data of the water spray bar (obtained through the attitude sensor), convert the key point coordinates into three-dimensional spatial coordinates with the camera as the origin, and obtain the distance and angle between the spray point and the target water spray area based on the three-dimensional spatial coordinates.

[0103] The camera uses a binocular camera or a laser rangefinder sensor mounted on the spray bar to acquire depth information. By combining the camera's intrinsic parameters and the current IMU attitude data of the spray bar, the coordinates of key points are accurately converted into three-dimensional spatial coordinates with the camera as the origin, in order to calculate the distance and angle between the spray point and the target water spray area.

[0104] S3. Based on the distance and angle, the water spray bar is moved to the target water spray area using the mobile positioning module.

[0105] During the decision output phase, if the target area is complete and located in the center of the image, the system determines "positioning complete" and sends a stop signal to the lifting frame; if the target is offset or partially occluded, the offset is calculated and the lifting frame is instructed to make fine adjustments; if a new area to be inspected is identified (as shown in the next layer of window frame), the system automatically generates the coordinates of the next spray point and plans the movement path; at the same time, the touch screen displays the recognition results with the bounding box or segmentation layer superimposed in real time, and the operator can manually correct the recognition error or force switch the spray point. The corrected data will be sent back to the model library for incremental learning to continuously optimize the model performance, thereby realizing closed-loop intelligent control and efficient and accurate collaboration of the entire system.

[0106] As the camera moves up and down with the sprinkler bar, it can automatically identify the spray points. According to standards or relevant specifications, spray points are generally located at the junction of exterior wall panels, air conditioning panels, awnings, window frames, scaffolding openings, wall expansion joints, partition joints, pipes extending from the exterior wall, parapet copings, embedded parts in the exterior wall, and cantilevered moldings. Users can select the area to be inspected (such as an entire wall, a specified floor, or a specific window frame) on the 3D model via a touchscreen, or the system can automatically identify all high-risk areas such as "window frame-wall joints" and "wall splicing joints" as the default inspection targets based on semantic tags.

[0107] In one embodiment, after the spray points are determined, the system is further configured with a spray path intelligent planning module. This module optimizes the movement path of the spray bar in three-dimensional space using a multi-objective optimization function. It automatically calculates the optimal movement sequence and path for traversing all spray points, aiming to maximize detection efficiency. The objective function for path planning comprehensively considers the following factors: first, minimizing the movement distance, i.e., minimizing the total path length of the spray bar during lifting, lowering, and translation; second, minimizing the number of lifting operations, extending the mechanical lifespan of the automatic lifting frame by reducing frequent starts and stops; and third, the cost of attitude adjustment, i.e., the time and energy required to adjust the spray angle. To cope with changes in the on-site environment, the system also has dynamic obstacle avoidance and replanning capabilities. During path execution, if the multi-sensor fusion detection module identifies newly appearing obstacles (such as temporary scaffolding, hanging baskets, etc.) or obstructions, the system will automatically trigger a dynamic replanning mechanism: taking the current sprinkler pole position as the starting point, the remaining undetected sprinkler points as the target set, and re-execute the path planning algorithm; if an obstacle is detected that cannot be bypassed (such as a completely enclosed obstruction), the system will record the area as "unreachable" and issue a prompt report to the user interface so that manual intervention or adjustment of the detection plan can be made.

[0108] During the sprinkler operation, the system first controls the automatic lifting frame to lower the sprinkler poles to the preset first detection position. Then, it activates the camera and multi-sensor modules to begin real-time acquisition of image, distance, posture, and environmental data. Simultaneously, it constructs a local 3D model of the detection area based on visual SLAM and laser ranging technology. During 3D model construction, the AI ​​visual recognition module analyzes the acquired images in real time, identifying key components such as window frames and seams and assigning them semantic labels. Simultaneously, the laser ranging sensor supplements depth information, generating a 3D point cloud or mesh model with semantic attributes, providing the geometric and semantic basis for subsequent sprinkler point generation. Based on engineering quality acceptance specifications and user-defined detection requirements on the touchscreen, combined with the component types and risk levels in the semantic 3D model, the system automatically generates a set of points for the target sprinkler area. It then optimizes this set based on principles such as redundant point removal and boundary adaptation to ensure a reasonable distribution of sprinkler points and coverage of all critical areas.

[0109] Once the set of spray points is determined, the system calls the path planning algorithm, taking the movement distance, number of lifting and lowering steps, attitude adjustment cost, and detection priority as optimization objectives, to calculate the optimal order and movement trajectory for traversing all spray points, and generate the complete motion path of the water spray bar in three-dimensional space.

[0110] This invention proposes a standardized water spray test instrument and system for exterior windows / walls, which can quantitatively and controllably test the waterproof performance of exterior windows and walls during the quality acceptance stage of building projects. This effectively prevents the common quality problem of leakage in residential exterior windows (walls) and meets the requirements of relevant standards and specifications for water spray test conditions. Specific advantages are as follows:

[0111] 1. By integrating a touch screen control panel into the main unit, the system can accurately adjust and stably output water flow and pressure, avoiding the problems of uncontrollable water volume and pressure in traditional manual water spraying or simple water pump methods, and improving the consistency of testing conditions and the objectivity and repeatability of test results.

[0112] 2. The structure adopts a single host to simultaneously drive multiple water spray pipes and water spray rods in parallel, which can simultaneously conduct water spray tests on multiple exterior windows or exterior wall areas under the same testing conditions, significantly improving on-site testing efficiency and shortening the project quality acceptance cycle.

[0113] 3. The water spray pipes, water spray rods and water distributors are all connected in a modular fashion using quick connectors, which enables rapid assembly and disassembly of the pipelines, reduces reliance on on-site construction tools, improves the flexibility of equipment layout, and adapts to the needs of different building facades and testing scenarios.

[0114] 4. By using an automatic lifting frame to control the traction rope and the water spray bar in a top-to-bottom arrangement, precise positioning and adjustment of windows and exterior walls at different heights can be completed on the roof, reducing the risks of working at heights and improving on-site safety.

[0115] 5. The video camera on the water spray bar accurately identifies the scene and controls the operation of the automatic lifting frame in real time, accurately delivering the water spray bar to different water spraying points and reducing manpower.

[0116] 6. The water spray bar is equipped with multiple water spray holes along its length, which makes the water spray flow evenly distributed and the coverage area stable. It can comprehensively detect key areas prone to leakage, such as window frames, window sashes, the connection between window frames and walls, and the joints of exterior wall finishes, avoiding blind spots caused by uneven water spraying.

[0117] 7. The system adopts a centralized water supply and unified parameter control method to keep the operating conditions of multiple water spraying points consistent, which is conducive to the comparative analysis of results between different detection points and improves the scientific nature of engineering quality assessment.

[0118] 8. The equipment has a compact overall structure and can be disassembled for transportation. It can complete the testing operation with the help of a portable water tank, without relying on fixed water supply conditions on site, which enhances the applicability of the equipment in different construction stages and different types of building projects.

[0119] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0120] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0121] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A water spray test apparatus, characterized in that, The water spray test apparatus includes: Main unit chassis; The spraying module is connected to the main unit housing. The spraying module includes a spray bar, a spray pipe connecting the main unit housing and the spray bar, and a pressure gauge and a flow meter located at the water inlet end of the spray bar. The spray bar has a plurality of spray holes. The connection accessory module includes a quick connector connecting the water spray pipe and the water spray bar, and a water distributor connecting the main unit housing to at least two of the water spray pipes; A mobile positioning module is used to control the water spraying rod to rise and fall along the building's exterior wall / window. The mobile positioning module includes an automatic lifting frame and a traction rope with its fixed end wound around the automatic lifting frame and its free end connected to the water spraying rod. A sensing and recognition module is fixed on the water spray bar, and the sensing and recognition module includes a camera; The water supply module is used to supply spray water to the main unit housing; The main control power module is located inside the main unit housing and is electrically connected to the spray execution module, the mobile positioning module, the sensing and identification module, and the water supply module.

2. The water spray test apparatus according to claim 1, characterized in that: The water spray bar is connected to two independent traction ropes at both ends, and the automatic lifting frame uses a double-drum winch mechanism to operate the traction ropes at both ends of the water spray bar synchronously.

3. The water spray test apparatus according to claim 1, characterized in that: The perception and recognition module also includes an attitude sensor for real-time detection of the attitude of the water spray bar.

4. The water spray test apparatus according to claim 1, characterized in that: The water spray bar is equipped with rollers at both ends that roll along the building's exterior walls / windows.

5. The water spray test apparatus according to claim 1, characterized in that: The water spray bar is equipped with a spray direction adjustment mechanism, including an electric rotary joint, and the spray direction adjustment mechanism is electrically connected to the main control power module.

6. The water spray test apparatus according to claim 1, characterized in that: Both ends of the water spraying rod are equipped with locking sleeves, which form a locking structure with the traction rope.

7. The water spray test apparatus according to claim 1, characterized in that: The water supply module includes a portable water tank and a float valve, and the main control power module includes a power pump. The portable water tank and the power pump are connected through a suction pipe.

8. The water spray test apparatus according to claim 1, characterized in that: The main unit housing is equipped with a flow control valve, and a water immersion sensor is installed at the bottom of the housing.

9. A method for detecting water spray, characterized in that, Based on the water spray test apparatus according to any one of claims 1 to 8, the method comprises: The system acquires images captured by the camera, identifies key building components based on an AI visual recognition model, and obtains the coordinates of key points. The depth information of the image is obtained, and combined with the camera intrinsic parameters and the posture data of the water spray bar, the coordinates of the key points are converted into three-dimensional spatial coordinates with the camera as the origin. The distance and angle between the spray point and the target water spray area are obtained based on the three-dimensional spatial coordinates. Based on the distance and the angle, the water spraying rod is moved to the target water spraying area by the mobile positioning module.

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