Water seepage detection device and detection method

Abstract

The invention provides a water seepage detection device and method, the water seepage detection device comprises a detection assembly and a control system, the detection assembly is used for emitting electromagnetic wave pulses to a roof and receiving electromagnetic wave echo signals reflected by the roof, and the control system is in communication connection with the detection assembly and is used for detecting water seepage according to the electromagnetic wave echo signals. And analyzing the dielectric property of the roof, and judging whether water seepage exists on the roof based on the dielectric property. The water seepage detection device achieves accurate detection of the water seepage position of the roof.

Description

Technical Field

[0001] This invention belongs to the technical field of seepage detection equipment, and specifically relates to a seepage detection device and detection method. Background Technology

[0002] In existing technologies, the extent of roof leakage is usually estimated by relying on visible signs such as water stains and mold on indoor ceilings or walls after rain. Based on this, the roof protective layer in the corresponding area is removed, and the waterproof layer is visually inspected for surface defects such as cracked joints, local damage, and bulging to make a preliminary judgment on possible leakage points.

[0003] However, this method has low accuracy in identifying seepage points and paths. Because the seepage path within the roof slab is often uncertain, the actual location of the waterproofing layer damage may not match the visible leak location indoors, making it difficult to accurately pinpoint the source of the leak based on preliminary judgment alone. In actual repairs, large-scale roof demolition and repeated inspections are often required to determine the seepage point and path, significantly increasing repair costs and workload, and extending the repair cycle. Summary of the Invention

[0004] This invention provides a water seepage detection device and method, enabling accurate detection of water seepage points on roofs.

[0005] The technical solution of the present invention is as follows:

[0006] A water seepage detection device, comprising:

[0007] The detection component is used to emit electromagnetic wave pulses toward the roof and receive electromagnetic wave echo signals reflected from the roof.

[0008] The control system is communicatively connected to the detection component and is used to analyze the dielectric properties of the roof based on the electromagnetic wave echo signal, and to determine whether there is water leakage in the roof based on the dielectric properties.

[0009] Furthermore, in the aforementioned seepage detection device, the detection component includes:

[0010] An electromagnetic wave transmitter, comprising a transient electromagnetic transmission module and a transmitting antenna, is used to generate and directionally transmit electromagnetic wave pulses onto a roof.

[0011] Several sensors are installed on the inner wall of the roof panel, each sensor including an electromagnetic wave receiver for receiving echo signals generated by the electromagnetic wave pulses from the roof.

[0012] Furthermore, in the aforementioned seepage detection device, the sensor also includes a multi-channel data acquisition module, which is connected to the electromagnetic wave receiver and is used to convert the echo signal into a multi-channel electrical signal.

[0013] Furthermore, the aforementioned water seepage detection device also includes a moving component, the detection component being mounted on the moving component, the moving component being used to drive the detection component to move along the roof detection area for detection; and / or,

[0014] It also includes a marking component for marking areas of water seepage on the roof.

[0015] Furthermore, in the aforementioned seepage detection device, the moving component includes:

[0016] A movable rod, on which the detection component is mounted;

[0017] Two support seats are arranged opposite each other, and each support seat is provided with a sliding groove. The two ends of the moving rod are located in the two sliding grooves and move along the sliding grooves.

[0018] Furthermore, in the aforementioned seepage detection device, the support base includes a fixed base and multiple support legs, the fixed base is mounted on the multiple support legs, and the sliding groove is located on the fixed base; and / or,

[0019] The bottom of both ends of the movable rod is provided with rollers, and the slide groove of the support base is provided with a guide rail, the rollers and the guide rails are in rolling engagement; and / or,

[0020] The moving component also includes a drive mechanism, and the control system is communicatively connected to the drive mechanism to control the drive mechanism to drive the moving rod to move at a constant speed.

[0021] Furthermore, in the aforementioned water seepage detection device, the marking assembly includes a powder storage box and a distributing mechanism. The powder storage box forms a powder storage cavity for containing marking powder, and the distributing mechanism is installed at the bottom of the powder storage box. The control system is communicatively connected to the distributing mechanism to control the distributing mechanism to discharge the marking powder in a diffused manner; and / or,

[0022] It also includes a movable base, which is connected to the marking assembly and sleeved on the movable rod, for driving the marking assembly to move along the length of the movable rod.

[0023] Furthermore, the seepage detection device also includes a display unit, which is communicatively connected to the control system and is used to display the waveform of the electromagnetic wave echo signal, the dielectric property analysis results, or the seepage judgment results in real time.

[0024] Furthermore, the water seepage detection device also includes a positioning unit, which is communicatively connected to the control system and is used to obtain the real-time location information of the detection component. The control system is also used to associate the location of water seepage with the real-time location information to generate a roof water seepage distribution map containing the location of water seepage.

[0025] A method for detecting water seepage, using the aforementioned water seepage detection device, includes the following steps:

[0026] S1: Clean debris from the roof surface and wet the roof;

[0027] S2: Movably install the detection component above the roof detection area;

[0028] S3: Control the detection component to move while emitting electromagnetic wave pulses towards the detection area, and receive the electromagnetic wave echo signal reflected from the roof in real time;

[0029] S4: The control system analyzes the dielectric properties of the roof in the detection area based on the electromagnetic wave echo signal, and determines whether there is water seepage in the roof based on the dielectric properties.

[0030] The beneficial effects of this invention are as follows:

[0031] The present invention discloses a water seepage detection device that adopts the principle of dielectric property analysis. Through the coordinated work of detection components and control system, it realizes accurate, non-contact and efficient detection of roof water seepage. It solves the problems of strong subjectivity of manual detection and large-scale roof demolition in the prior art. It facilitates timely and targeted maintenance, reduces the risk of structural damage caused by roof water seepage and the cost of subsequent maintenance, and can be adapted to roofs of various materials.

[0032] This seepage detection device uses an electromagnetic wave transmitter and multiple sensors to achieve accurate identification of millimeter-level seepage channels, and it has strong anti-interference capabilities and no blind spots. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of a water seepage detection device according to the present invention;

[0034] Figure 2 This is a front view schematic diagram of a water seepage detection device according to the present invention;

[0035] Figure 3 This is a top view schematic diagram of a water seepage detection device according to the present invention;

[0036] Figure 4 This is a schematic diagram of the detection process of a water seepage detection device according to the present invention.

[0037] In the diagram: 1. Electromagnetic wave transmitter; 2. Sensor; 3. Moving component; 4. Marking component; 5. Roof; 31. Moving rod; 32. Support base; 311. Roller; 321. Slide; 322. Fixed base; 323. Support foot. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0039] like Figure 1 and Figure 2 As shown, this embodiment provides a seepage detection device, including a detection component and a control system, and may also include a moving component 3 and a marking component 4.

[0040] A portion of the detection assembly can be mounted above the roof 5. The detection assembly is used to emit electromagnetic wave pulses toward the roof 5 and receive electromagnetic wave echo signals reflected by the roof 5. The detection assembly may include an electromagnetic wave transmitter 1 and several sensors 2.

[0041] The electromagnetic wave transmitter 1 includes a transient electromagnetic transmission module and a transmitting antenna. The frequency of the transmitting antenna can be selected according to the thickness of the roof 5. For shallow leaks (<30cm), a high-frequency antenna (e.g., 2.6GHz) is used, while for deep leaks, a low-frequency antenna (e.g., 400MHz) is used. The transient electromagnetic transmission module generates transient electromagnetic pulse signals with specific parameters (e.g., pulse width, amplitude, frequency). After being directionally focused by the transmitting antenna, the transient electromagnetic pulse signals are transmitted towards the roof 5 structure (e.g., composite structures such as roof panels, waterproofing layers, and insulation layers). The directional design of the transmitting antenna ensures that electromagnetic energy is concentrated on the detection area, reducing energy loss and environmental interference. Simultaneously, the use of transient electromagnetic full-wave technology can identify millimeter-level leak channels.

[0042] Several sensors 2 are installed on the inner wall of the roof panel (for example, one sensor 2 is installed every four square meters of roof 5). Each sensor 2 includes an electromagnetic wave receiver, preferably a high-sensitivity electromagnetic wave receiver. The multiple electromagnetic wave receivers synchronously receive echo signals generated by the electromagnetic wave pulses from the roof 5. The distributed layout of the multiple sensors 2 achieves full coverage of the detection area, avoiding blind spots for a single sensor 2 through spatial signal complementarity. Simultaneously, the close installation of the sensors 2 to the inner wall of the roof panel shortens the propagation path of the echo signal, reduces environmental noise interference, and improves the signal-to-noise ratio of the received signal.

[0043] The detection component is mounted on the moving component 3, which is used to drive the detection component to move along the detection area of ​​the roof 5 for detection.

[0044] The marking component 4 is used to mark the water seepage area of ​​the roof 5. When the detection component detects an abnormal area of ​​the roof 5, the moving component 3 stops, and the marking component 4 marks the abnormal area.

[0045] The control system is communicatively connected to the detection component and is used to analyze the dielectric properties of the roof 5 based on the electromagnetic wave echo signal, and determine whether there is water leakage on the roof 5 based on the dielectric properties. The control system is communicatively connected to the moving component 3 and the marking component 4 respectively, and controls the operation of the moving component 3 and the marking component 4.

[0046] Specifically, the roof 5 can be divided into several areas. The moving component 3 drives the detection component to move at a constant speed along the first area of ​​the roof 5. The transient electromagnetic emission module in the electromagnetic wave transmitter 1 of the detection component generates a transient electromagnetic pulse signal. After being directionally focused by the transmitting antenna, this signal is emitted towards the roof 5 structure (such as a composite structure of roof panels, waterproof layer, and insulation layer). The emitted electromagnetic pulse penetrates the surface of the roof 5 and propagates at different medium interfaces (normal structural layer interface, water seepage area and dry structural interface). Because water seepage causes a significant change in the dielectric constant of the local medium of the roof 5 (the dielectric constant of water is much higher than that of dry building materials), the electromagnetic pulse undergoes characteristic reflection and refraction. Multiple sensors 2 installed on the inner wall of the roof panel synchronously collect the reflected echo signals through electromagnetic wave receivers. After receiving the echo signals from the electromagnetic wave receivers, the control system extracts characteristic parameters such as amplitude, phase, and propagation time through signal processing algorithms to analyze the dielectric characteristic distribution of the first area of ​​the roof 5 and identify areas with abnormal dielectric characteristics as water seepage areas. The above operation is repeated to complete the detection work of the remaining areas of the roof 5, and finally realizes the identification and location of the overall water seepage points of the roof 5. The detection component can also be selected from other existing models of electromagnetic wave transmitters and receivers as needed.

[0047] The above structure employs the principle of dielectric property analysis, and through the collaborative work of detection components and control system, it achieves accurate, non-contact, and efficient detection of roof leakage. This solves the problems of subjective manual detection and large-scale demolition of roofs in existing technologies, making it easier to carry out targeted repairs in a timely manner, reducing the risk of structural damage caused by roof leakage and the subsequent maintenance costs. It is also compatible with roofs made of various materials.

[0048] like Figure 2 and Figure 4As shown, in a preferred embodiment, the sensor 2 further includes a multi-channel data acquisition module connected to the electromagnetic wave receiver, used to convert the echo signal into a multi-channel electrical signal. The multi-channel data acquisition module amplifies and filters the echo signal acquired by the electromagnetic wave, converting it into a high-precision multi-channel electrical signal that is transmitted to the control system. The control system analyzes the dielectric properties of different areas of the roof 5 based on this electrical signal, utilizing the difference in dielectric constant between water and the roof 5 building materials to determine whether water seepage exists and to accurately locate the seepage area. This multi-channel data acquisition module not only meets the analysis needs of the control system and improves the reliability of the detection data and the accuracy of seepage location, but also, in conjunction with the electromagnetic wave receiver, enables comprehensive, non-destructive, and convenient detection of the roof 5.

[0049] like Figure 1 and Figure 2 As shown, in a preferred embodiment, the moving component 3 includes a moving rod 31 and two oppositely arranged support seats 32, and also includes a drive mechanism (not shown).

[0050] The electromagnetic wave transmitter 1 of the detection component is fixedly installed on the movable rod 31, and the transmitting antenna of the electromagnetic wave transmitter 1 is facing the top of the roof 5.

[0051] Both support bases 32 are provided with sliding grooves 321, and the two ends of the moving rod 31 are located in the two sliding grooves 321 and move along the sliding grooves 321. The support base 32 may include a fixed base 322 and a plurality of support feet 323. The fixed base 322 is mounted on the plurality of support feet 323, and the sliding grooves 321 are located on the fixed base 322.

[0052] The control system is communicatively connected to the drive mechanism to control the drive mechanism to drive the moving rod 31 to move at a uniform speed. The drive mechanism may include a motor and a lead screw transmission mechanism. The lead screw transmission mechanism is mounted on the motor, and the moving rod 31 is sleeved on the lead screw of the lead screw transmission mechanism and threadedly connected to the lead screw. The motor drives the lead screw transmission mechanism to rotate, and the moving rod 31 moves linearly along the slide groove 321 along the lead screw transmission mechanism. The drive mechanism may also be configured as a linear module, which is installed in the slide groove 321. One end or both ends of the moving rod 31 are mounted on the linear module, and the linear module drives the moving rod 31 to move along the slide groove 321.

[0053] Specifically, during the roof inspection, the two support bases 32 and the moving rod 31 are first assembled on the roof. The two ends of the moving rod 31 extend into the grooves 321 of the support bases 32 and are connected to the drive mechanism. Then, the drive mechanism drives the moving rod 31 to move the detection component at a constant speed along the roof. When the detection component shows an abnormal signal strength, the drive mechanism drives the moving rod 31 to stop moving under the instruction of the control system. After the marking component 4 completes the marking of the abnormal area, the drive mechanism restarts and drives the moving rod 31 to continue to complete the subsequent inspection.

[0054] The setup of the mobile component 3 enables automated, uniform scanning and continuous detection of the detection component, improving the detection efficiency of the equipment and reducing the cost of manual intervention.

[0055] like Figure 2 As shown, furthermore, rollers 311 can be provided at the bottom of both ends of the movable rod 31, and a guide rail (not shown) is provided on the slide groove 321 of the support base 32, with the rollers 311 and the guide rail in rolling cooperation. This arrangement improves the smoothness of the movement of the movable rod 31, further improves the movement efficiency, and avoids slippage, jamming, or other situations during movement.

[0056] In a preferred embodiment, the marking assembly 4 includes a powder storage box (not shown) and a distributing mechanism (not shown). The powder storage box forms a powder storage cavity for containing marking powder. The distributing mechanism is installed at the bottom of the powder storage box. The control system is communicatively connected to the distributing mechanism to control the distributing mechanism to discharge the marking powder in a diffused manner. The marking assembly 4 also includes a movable base connected to the marking assembly 4 and sleeved on the movable rod 31 for driving the marking assembly 4 to move along the length of the movable rod 31.

[0057] Specifically, when the detection component experiences an abnormal signal strength, it stops moving. The moving base drives the powder storage box to move along the moving rod 31 to the abnormal position on the roof 5. The distributing mechanism then drives the marking powder in the powder storage box to be discharged in a diffused manner to mark the abnormal position. After marking is completed, the detection component continues to move. The moving base and the distributing mechanism are controlled by the control system.

[0058] The marking component 4 enables accurate marking of abnormal areas and can automatically adjust its position to adapt to the marking requirements of different roofs 5, thus improving the intuitiveness of abnormal location.

[0059] In a preferred embodiment, the seepage detection device further includes a display unit, which is communicatively connected to the control system. This display unit is used to display the waveform of the electromagnetic echo signal, dielectric property analysis results, or seepage judgment results in real time. The display unit establishes a communication connection with the control system, receiving electromagnetic echo signal waveform data, dielectric property analysis parameters, and seepage judgment conclusions transmitted by the control system in real time. Through a visual interface, it intuitively presents information such as waveform curves, dielectric constant values / distributions, and seepage area markings, achieving synchronous display of detection data and results, thus improving detection efficiency and ease of operation.

[0060] In a preferred embodiment, the seepage detection device further includes a positioning unit, which can employ GPS or laser positioning. The positioning unit is communicatively connected to the control system and is used to acquire the real-time location information of the detection component. The control system is also used to associate the locations of seepage with the real-time location information to generate a roof seepage distribution map (e.g., an electronic map or 3D model) containing the seepage locations. The positioning unit collects the spatial location information of the detection component in real time and transmits it to the control system. The control system associates and matches this real-time location information with the seepage judgment result, and integrates it with the basic parameters of the roof to generate a roof seepage distribution map that marks the specific seepage locations, achieving accurate mapping of seepage locations.

[0061] like Figure 1 and Figure 4 As shown, this embodiment also provides a water seepage detection method, which uses the aforementioned water seepage detection device and includes the following steps: S1-S4.

[0062] S1: Clean debris from the roof surface 5 to ensure the detection area is free of obstructions. After rain or 24 hours of keeping the roof wet, enhance signal contrast in areas with moisture.

[0063] S2: Divide the roof 5 into multiple areas, install the electromagnetic wave transmitter 1 of the detection component above the current detection area through the moving component 3, and install a sensor 2 on the inner wall of the roof panel every four square meters.

[0064] S3: The control system controls the moving component 3 to drive the detection component to move at a constant speed. The electromagnetic wave transmitter 1 of the detection component emits electromagnetic wave pulses towards the roof 5 of the current detection area. The sensor 2 receives the electromagnetic wave echo signal reflected from the roof 5 in real time and collects three parameters: signal strength (amplitude), reflection time, and waveform characteristics. These parameters are fed back to the control system. When the signal strength is abnormal, the control system controls the moving component 3 to stop the detection component. The marking component 4 marks the abnormal area. After marking is completed, the control system continues to move the detection component to perform detection. A single detection can cover an area of ​​ten square meters.

[0065] S4: The control system analyzes the dielectric properties of the roof 5 in the current detection area based on the electromagnetic wave echo signal, and determines whether there is water leakage in the roof 5 based on the dielectric properties. Repeat steps S2-S4 to complete the detection of the remaining areas of the roof 5.

[0066] The above method enables accurate, non-contact, and efficient detection of roof seepage, solving the problems of subjective manual detection and large-scale roof demolition in existing technologies. It facilitates timely and targeted repairs, reduces the risk of structural damage and subsequent maintenance costs caused by roof seepage, and is compatible with roofs of various materials.

[0067] The control system can be any applicable computing device, such as a personal computer, server, programmable logic controller (PLC), microcontroller, etc., or it can be an integration of computer devices. The control system has functions such as receiving information and sending control commands. The control system can control the detection component, the moving component 3 and the marking component 4 to perform corresponding actions through wired or wireless communication to complete the operation of the equipment.

[0068] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A seepage detection device, characterized in that, include: The detection component is used to emit electromagnetic wave pulses to the roof (5) and receive electromagnetic wave echo signals reflected by the roof (5); The control system is communicatively connected to the detection component and is used to analyze the dielectric properties of the roof (5) based on the electromagnetic wave echo signal and to determine whether there is water seepage in the roof (5) based on the dielectric properties.

2. The seepage detection device as described in claim 1, characterized in that, The detection component includes: Electromagnetic wave transmitter (1), the electromagnetic wave transmitter (1) includes a transient electromagnetic transmission module and a transmitting antenna, for generating and directionally transmitting electromagnetic wave pulses to the roof (5); Several sensors (2) are installed on the inner wall of the roof (5) panel respectively. Each sensor (2) includes an electromagnetic wave receiver for receiving echo signals generated by the electromagnetic wave pulses from the roof (5).

3. The seepage detection device as described in claim 2, characterized in that, The sensor (2) also includes a multi-channel data acquisition module, which is connected to the electromagnetic wave receiver and is used to convert the echo signal into a multi-channel electrical signal.

4. The seepage detection device as described in claim 1, characterized in that, It also includes a moving component (3), on which the detection component is mounted, the moving component (3) being used to drive the detection component to move along the detection area of ​​the roof (5) for detection; and / or, It also includes a marking component (4) for marking the water seepage areas of the roof (5).

5. The seepage detection device as described in claim 4, characterized in that, The moving component (3) includes: A movable rod (31), on which the detection component is mounted; Two support seats (32) are arranged opposite each other, and each of the two support seats (32) is provided with a sliding groove (321). The two ends of the moving rod (31) are located in the two sliding grooves (321) and move along the sliding grooves (321).

6. The seepage detection device as described in claim 5, characterized in that, The support base (32) includes a fixed base (322) and a plurality of support legs (323), the fixed base (322) being mounted on the plurality of support legs (323), and the sliding groove (321) being located on the fixed base (322); and / or, Rollers (311) are provided at the bottom of both ends of the movable rod (31), and guide rails are provided on the grooves (321) of the support base (32). The rollers (311) and the guide rails are in rolling cooperation; and / or, The moving component (3) further includes a drive mechanism, and the control system is communicatively connected to the drive mechanism to control the drive mechanism to drive the moving rod (31) to move at a constant speed.

7. The seepage detection device as described in claim 5, characterized in that, The marking component (4) includes a powder storage box and a distributing mechanism. The powder storage box forms a powder storage cavity for containing marking powder. The distributing mechanism is installed at the bottom of the powder storage box. The control system is communicatively connected to the distributing mechanism to control the distributing mechanism to discharge the marking powder in a diffuse manner. And / or, It also includes a movable base, which is connected to the marking component (4) and sleeved on the movable rod (31) for driving the marking component (4) to move along the length direction of the movable rod (31).

8. The seepage detection device as described in claim 1, characterized in that, It also includes a display unit, which is communicatively connected to the control system and is used to display the waveform of the electromagnetic wave echo signal, dielectric property analysis results, or water seepage judgment results in real time.

9. The seepage detection device as described in claim 1, characterized in that, It also includes a positioning unit, which is communicatively connected to the control system and is used to obtain the real-time location information of the detection component. The control system is also used to associate the location of water seepage with the real-time location information to generate a roof (5) water seepage distribution map containing the water seepage location.

10. A method for detecting water seepage, using the water seepage detection device according to any one of claims 1-9, characterized in that, Includes the following steps: S1: Clean the surface of the roof (5) of debris and wet the roof (5); S2: Movably install the detection component above the roof detection area; S3: Control the detection component to move while emitting electromagnetic wave pulses to the detection area, and receive the electromagnetic wave echo signal reflected by the roof (5) in real time; S4: The control system analyzes the dielectric properties of the roof (5) in the detection area based on the electromagnetic wave echo signal, and determines whether there is water seepage in the roof (5) based on the dielectric properties.

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