Fabricated building outer wall joint leakage detection method and system

Abstract

The invention discloses a prefabricated building outer wall joint leakage detection method and system, and the method comprises the steps: collecting the width and depth of a connection joint in unit time of a prefabricated building outer wall, and transmitting the width and depth of the connection joint to a connection joint width and depth dynamic change database of a leakage information comprehensive concentration module through a 5G network; the connection seam width and depth dynamic change database records the widths and depths of connection seams of different fillers and construction process information of different fillers; traversing different filler joint width and depth and different filler construction process information which conforms to a safety limit value and is sent by the wall body at the same region position in four seasons by using a 5G network in a joint width and depth dynamic change database; and performing leakage detection on the construction and installation process of the current wall body by using the construction flow information of different filling agents conforming to the safety limit value. The method does not depend on certain single sensing monitoring data, errors are avoided, and the safety of the wall is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of external wall leakage detection, and in particular to a method and a system for detecting leakage of joints in external walls of assembled buildings. Background Art

[0002] Prefabricated buildings have been widely used in the construction industry in recent years due to their advantages such as fast construction and material saving. However, due to the particularity of the connection between the components, the joints of prefabricated exterior walls are prone to leakage during long-term use, affecting the service life and safety of the building. For this reason, the development of leakage detection methods and systems has become particularly important. Common detection methods include visual inspection, infrared thermal imaging, water pressure testing, air tightness testing, etc. In recent years, intelligent monitoring systems based on sensor technology have gradually been applied to leakage detection, which monitor the joint status in real time through strain sensors, humidity sensors, temperature sensors, etc., and conduct leakage warnings in combination with data analysis technology.

[0003] Although the existing leakage detection technology and system have solved the problem of leakage in the joints of the exterior walls of prefabricated buildings to a certain extent, there are still some shortcomings. First, traditional detection methods such as visual inspection and infrared thermal imaging are limited by environmental conditions and personnel experience, and are prone to missed detection or misjudgment. Secondly, although sensor technology can provide real-time monitoring, its stability and durability in harsh environments still need to be improved, and sensor failure or data loss may lead to false alarms or missed alarms. In addition, most of the existing systems are single-type detection, lack the integration of multiple detection methods, and it is difficult to fully evaluate the actual condition of the joints. Existing technologies still have challenges in analysis and are difficult to meet the high requirements of anti-leakage detection. To this end, we propose a leakage detection method and leakage detection system for the joints of the exterior walls of prefabricated buildings. Summary of the invention

[0004] In order to overcome the shortcomings and deficiencies of the existing technology, a new method and system for leakage detection of joints in the exterior walls of prefabricated buildings based on joint width and depth recognition technology is proposed.

[0005] The present invention provides a method for detecting leakage of joints in an outer wall of an assembled building, the method comprising: Collect the unit time connection seam width and depth of the outer wall of the prefabricated building and send the obtained unit time connection seam width and depth to the leakage information comprehensive concentration module using the 5G network. The leakage information comprehensive concentration module includes a dynamic change database of the connection seam width and depth of the outer wall of the prefabricated building. The connection seam width and depth dynamic change database records the connection seam width and depth of different fillers and the construction process information of different fillers sent by the 5G network when the sealing construction of the four seasons wall in the same area is carried out; The different filler connection seam widths and depths and the different filler construction process information sent by the four-season walls in the same area using the 5G network that meet the safety limit values ​​are traversed in the dynamic change database of the connection seam width and depth. The safety limit values ​​are the thresholds of the connection seam water tightness index displayed by the connection seam widths and depths of the different fillers and the connection seam water tightness index reflected by the connection seam widths and depths per unit time under different climatic conditions, and the leakage detection time periods of the connection seam widths and depths of the different fillers meet the set waterproof requirements; The construction process information of different fillers that meets the safety limit values ​​is used to perform leakage detection on the construction and installation process of the current wall, and the unit time connection seam width, depth and construction process information collected from the current wall are sent to the connection seam width and depth dynamic change database using the 5G network.

[0006] Furthermore, the connection seam width and depth dynamic change database also records the connection seam width and depth dynamic changes detected from the connection seam widths and depths of different fillers using the set connection seam width and depth dynamic change leakage detection method, and the connection seam width and depth dynamic changes include dynamic changes caused by temperature changes and dynamic changes caused by humidity.

[0007] Further, the step of traversing the different filler connection seam widths, depths and the different filler construction process information that meet the safety limit value includes: Utilize the connection seam width and depth dynamic change leakage detection method to detect the connection seam width and depth dynamic change contained in the connection seam width and depth per unit time; By comparing the dynamic changes of the connection seam width and depth and the leakage detection period, the connection seam widths and depths of different fillers that meet the safety limit values ​​and the construction process information of the different fillers are traversed in the connection seam width and depth dynamic change database.

[0008] Furthermore, the method for detecting leakage of joints in the outer wall of a prefabricated building further comprises the step of forming a database of dynamic changes in the width and depth of the joints, and the step of forming the database of dynamic changes in the width and depth of the joints comprises: The step of utilizing the dynamic changes of the connection seam width and depth to divide the connection seam widths and depths of different fillers recorded in the connection seam width and depth dynamic change database into different connection seam risk factors; and traversing the connection seam widths and depths of different fillers that meet the safety limit values ​​and the construction process information of the different fillers also includes: Determine the risk factor of the connecting seam to which it belongs by using the dynamic changes of the connecting seam width and depth contained in the connecting seam width and depth per unit time; In the dynamic change database of connection seam width and depth, the different filler connection seam widths, depths and construction process information of the different fillers having the same hazard factor as the connection seam width and depth per unit time and whose time difference between the leakage detection period and the current time does not exceed the waterproof requirement are traversed.

[0009] Furthermore, the different connection joint risk factors involve a plurality of different connection joint water tightness indicators for setting the wall moisture content.

[0010] Furthermore, the different connection joint risk factors involve a variety of different wall material strengths or connection methods.

[0011] Furthermore, the construction process information of different fillers includes surface treatment of the wall, filling method of the filler, maintenance and curing of the wall, and change of wall load.

[0012] Furthermore, the method for detecting leakage of joints in the outer wall of an assembled building further comprises the following steps: If the different filler connection seam widths, depths and construction process information of the different fillers that meet the safety limit values ​​cannot be traversed in the connection seam width and depth dynamic change database, other construction leakage detection modes are performed to leak detect the construction and installation process of the current wall. At the same time, the connection seam width, depth and construction process information per unit time collected from the current wall are still sent to the connection seam width and depth dynamic change database via the 5G network.

[0013] Furthermore, the method for detecting leakage of joints in the outer wall of an assembled building further comprises the following steps: Monitor the wall load changes of the current wall, and determine whether the current wall has building settlement according to the wall load changes. If building settlement occurs, perform other construction leakage detection modes to detect the construction and installation process of the current wall.

[0014] Furthermore, a database of dynamic changes in the width and depth of the connection seams is established on the wall monitoring server, and the wall monitoring server executes the steps of traversing the widths and depths of the connection seams of different fillers that meet the safety limit values ​​and the construction process information of the different fillers, and then sends the construction process information of the different fillers that meet the safety limit values ​​to the construction leakage detection system of the current wall, so that the construction leakage detection system performs leakage detection on the construction and installation process.

[0015] The present invention also provides a prefabricated building exterior wall joint leakage detection system, the system comprising: A leakage information comprehensive concentration module, wherein the leakage information comprehensive concentration module has a database of dynamic changes in the width and depth of the joints of the outer walls of prefabricated buildings, wherein the database records the width and depth of the joints of different fillers and the construction process information of different fillers sent by the 5G network when the sealing construction is carried out on the walls of the four seasons in the same area; The joint width and depth information integration module is used to collect the joint width and depth per unit time of the outer wall of the prefabricated building; A construction process information collection module, used to collect construction process information when the wall is undergoing sealing construction on the wall; A 5G network information sending module, used to obtain the connection seam width and depth per unit time and the construction process information and send them to the leakage information comprehensive concentration module using the 5G network; The joint width and depth analysis and judgment module is used to traverse the joint width and depth of different fillers and the construction process information of different fillers sent by the four-season wall in the same area using the 5G network that meet the safety limit value in the joint width and depth dynamic change database and provide it to the wall installation process leakage detection module installed on the wall monitoring end. The safety limit value is the threshold value of the joint water tightness index displayed by the joint width and depth of the different fillers and the joint water tightness index reflected by the joint width and depth per unit time under different climatic conditions, and the leakage detection period of the joint width and depth of the different fillers meets the set waterproof requirements; The wall installation process leakage detection module is used to perform leakage detection on the wall construction and installation process using the different filler construction process information that meets the safety limit value.

[0016] Furthermore, the connection seam width and depth analysis and judgment module is arranged in the leakage information comprehensive concentration module, or the connection seam width and depth analysis and judgment module is installed on the wall monitoring end.

[0017] Furthermore, the joint width and depth information integration module is a wall sampler installed at the wall monitoring end.

[0018] Furthermore, the wall installation process leakage detection module is also used to perform other construction leakage detection modes to leak detect the construction and installation process of the wall when the connection seam width and depth analysis and judgment module fails to traverse the different filler connection seam widths, depths and the different filler construction process information that meet the safety limit values.

[0019] Furthermore, the prefabricated building exterior wall joint leakage detection system also includes: A multimodal monitoring sensor installed on a wall monitoring end, the multimodal monitoring sensor being used to measure a change in a wall load of the wall; The multimodal monitoring sensor includes a strain gauge assembly, a displacement sensor assembly, a pressure sensor assembly, and an accelerometer assembly; The wall installation process leakage detection module is also used to obtain the wall load change measured by the multimodal monitoring sensor and determine whether the wall has building settlement based on the wall load change. If building settlement occurs, other construction leakage detection modes are used to leak detect the construction and installation process of the wall.

[0020] Beneficial Effects

[0021] The method and system for detecting leakage of joints in exterior walls of prefabricated buildings proposed in the present invention can realize multi-faceted leakage detection of multiple walls by identifying the state of the target joints, the water tightness index of the joints, and a variety of environmental data, such as the surface treatment of the wall, the filling method of the filler, the maintenance and curing of the wall, the wall load change, etc., which is conducive to the analysis of the construction environment. The method and system for detecting leakage of joints in the exterior walls of prefabricated buildings proposed in the present invention are more comprehensive than the existing leakage detection methods and do not rely on a single sensor monitoring data. The present invention makes a comprehensive judgment on a variety of monitoring indicators to avoid errors. At the same time, the present invention adopts 5G data transmission technology to ensure the stability of data transmission and improve the accuracy of wall quality analysis. The present invention is a fully automatic detection method and system, which avoids errors and omissions in manual operations and ensures the safety of the wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a flow chart of the method of the present invention; Figure 2 System module composition diagram of the present invention. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] like Figure 1 As shown, the method for detecting leakage of joints in the outer wall of an assembled building may include the following steps: Step S100: Establishing a database of dynamic changes in the width and depth of the joints of the exterior walls of prefabricated buildings in the leakage information comprehensive concentration module, wherein the database records the width and depth of the joints of different fillers and the construction process information of different fillers sent by the 5G network when the wall is subjected to sealing construction; Step S200: collecting the unit time connection seam width and depth of the outer wall of the prefabricated building and sending the acquired unit time connection seam width and depth to the leakage information comprehensive concentration module using the 5G network; Step S300: Traverse the different filler connection seam widths and depths and the different filler construction process information sent by the four-season wall in the same area using the 5G network that meet the safety limit values ​​in the connection seam width and depth dynamic change database, the safety limit value is the connection seam water tightness index displayed by the different filler connection seam widths and depths and the connection seam water tightness index reflected by the connection seam width and depth per unit time under different climatic conditions, and the leakage detection period of the different filler connection seam widths and depths meets the set waterproof requirements; Step S400: using the construction process information of different fillers that meet the safety limit value to perform leakage detection on the construction and installation process of the current wall, and sending the unit time connection seam width, depth and construction process information collected by the current wall to the connection seam width and depth dynamic change database using the 5G network; Step S500: monitor the wall load change of the current wall, and determine whether the current wall has building settlement according to the wall load change. If building settlement occurs, perform other construction leakage detection modes to detect the construction and installation process of the current wall.

[0025] It should be understood that the step of establishing a database of dynamic changes in the width and depth of the connection seams in the implementation described herein is only for easier reading and understanding of the implementation of the method for detecting leakage of joints in the exterior walls of prefabricated buildings, and does not limit the step of establishing a database of dynamic changes in the width and depth of the connection seams to be performed every time the method is executed. In fact, it is easy to understand that, usually, after the database of dynamic changes in the width and depth of the connection seams of the exterior walls of prefabricated buildings is established, it is only necessary to update the relevant data and information recorded and perform the usual necessary processing for a considerable period of time, without the need to establish the database again. The above-mentioned method for detecting leakage of joints in the exterior walls of prefabricated buildings will execute the steps after establishing a database of dynamic changes in the width and depth of the connection seams of the exterior walls of prefabricated buildings.

[0026] The width and depth of the connection seam per unit time may be collected by a wall sampler installed at the wall monitoring end. For example, the wall sampler may include an electric wall sampler and a communication device or a signal transmitting device for sending the connection seam width and depth data (e.g., via a wireless signal) to the connection seam width and depth dynamic change database using a 5G network. The connection seam width and depth data may be sent to the database by a communication device or a signal transmitting device.

[0027] It should be understood that an example of the leakage information comprehensive concentration module referred to herein is a wall monitoring server. The wall monitoring server can be built at a ground base station. The wall monitoring server can have a large-scale recording space and the ability to process complex connection seam width and depth data, so that the collected large quantities of connection seam width and depth data can be processed according to a preset algorithm to produce corresponding connection seam water tightness index information, and has the function of transmitting signals or data.

[0028] In an embodiment using a wall monitoring server, a database of dynamic changes in the width and depth of the joints can be established on the wall monitoring server, and the wall monitoring server performs the steps of traversing the width and depth of the joints of different fillers that meet the safety limit values ​​and the construction process information of the different fillers, and then sends the construction process information of the different fillers that meet the safety limit values ​​to the construction leakage detection system of the current wall, so that the construction leakage detection system performs leakage detection on the construction and installation process. The advantage of this embodiment is that most of the algorithms that require a large amount of calculation will be concentrated in the wall monitoring server on the ground for processing. This solution relatively reduces the intermediate links (such as data communication process) of using information related to the width and depth of the joints to identify and leak detection construction and installation processes, which may be beneficial to improving processing efficiency and the reliability of active leakage detection in construction in some aspects.

[0029] It should be understood that the safety limit value actually includes two conditions. One is the threshold value of the water tightness index of the connection seams reflected by the width and depth of the connection seams with different fillers and the water tightness index of the connection seams reflected by the width and depth of the connection seams per unit time under different climatic conditions; the other is that the leakage detection period of the width and depth of the connection seams with different fillers meets the set waterproof requirements.

[0030] It should also be understood that the joint water tightness index referred to herein may include a variety of set or predefined joint risk factors, which are used to distinguish the set wall moisture content of a variety of joints that are different for construction leakage detection, and these different joint wall moisture contents and wall material strength or connection methods can be distinguished through some dynamic changes in the joint width and depth. On this basis, the threshold of the joint water tightness index under different climatic conditions reflected by the joint width and depth referred to in the above description may refer to the processing and analysis of the set joint width and depth processing or identification algorithm or characteristic leakage detection method, and the result obtained is that the joint width and depth of a certain filler joint and the joint width and depth per unit time reflect that the sampled joints belong to the same predefined joint risk factor, that is, the joint wall moisture content is the same, or on the basis of the same wall moisture content, the wall material strength or connection method is also the same.

[0031] Based on the above considerations, preferably, the database of dynamic changes in connection seam width and depth also records the dynamic changes in connection seam width and depth detected from the connection seam widths and depths of different fillers using the set leakage detection method for dynamic changes in connection seam width and depth, and the dynamic changes in connection seam width and depth include dynamic changes caused by temperature changes and dynamic changes caused by humidity.

[0032] Furthermore, the dynamic changes caused by temperature changes and the dynamic changes caused by humidity may refer to the dynamic changes caused by temperature changes and the dynamic changes caused by humidity of the outer wall of the prefabricated building.

[0033] Furthermore, in the above-mentioned method for detecting leakage of joints in the outer wall of an assembled building, the step of traversing the width and depth of the joints of different fillers that meet the safety limit value and the construction process information of the different fillers includes: Utilize the connection seam width and depth dynamic change leakage detection method to detect the connection seam width and depth dynamic change contained in the connection seam width and depth per unit time; By comparing the dynamic changes of the connection seam width and depth and the leakage detection period, the connection seam widths and depths of different fillers that meet the safety limit values ​​and the construction process information of the different fillers are traversed in the connection seam width and depth dynamic change database.

[0034] The steps of establishing a database of dynamic changes in the width and depth of the joints of the exterior walls of prefabricated buildings also include: Using the dynamic changes of the connection seam width and depth, the connection seam widths and depths of different fillers recorded in the connection seam width and depth dynamic change database are divided into different connection seam risk factors; and, The step of traversing the different filler connection seam widths and depths that meet the safety limit values ​​and the different filler construction process information also includes: Determine the risk factor of the connecting seam to which it belongs by using the dynamic changes of the connecting seam width and depth contained in the connecting seam width and depth per unit time; In the dynamic change database of connection seam width and depth, the different filler connection seam widths, depths and construction process information of the different fillers having the same hazard factor as the connection seam width and depth per unit time and whose time difference between the leakage detection period and the current time does not exceed the waterproof requirement are traversed.

[0035] Preferably, further, the construction process information of different fillers includes the surface treatment of the wall, the filling method of the filler, the maintenance and curing of the wall, and the wall load change. In some embodiments, the above-mentioned method for detecting leakage of joints in the exterior wall of an assembled building can be applied or combined with an existing method for detecting leakage of sealing construction, such as a method for performing other leakage detection on the construction and installation process based on the maintenance and curing of the wall.

[0036] Other construction leakage detection modes, that is, existing construction modes that can be adopted when the above-mentioned active construction leakage detection method based on connection seam width and depth identification fails, can typically be other construction leakage detection modes such as leakage detection of construction and installation processes based on wall maintenance and curing.

[0037] Preferably, the method for detecting leakage of joints in the outer wall of an assembled building further comprises the following steps: If the different filler connection seam widths, depths and construction process information of the different fillers that meet the safety limit values ​​cannot be traversed in the connection seam width and depth dynamic change database, other construction leakage detection modes are performed to leak detect the construction and installation process of the current wall. At the same time, the connection seam width, depth and construction process information per unit time collected from the current wall are still sent to the connection seam width and depth dynamic change database via the 5G network.

[0038] It should be understood that the current wall referred to above may generally refer to a wall that has entered the crack stage.

[0039] It should be understood that the four-season wall mentioned above refers to the monitoring of the wall at different stages of the year. The cracks in the wall will show different characteristics in different seasons. This is because temperature, humidity and climate change will cause physical changes such as thermal expansion and contraction of wall materials. The following are some of the main influencing factors: Temperature change: Temperature change causes expansion and contraction of wall materials. In winter, due to the low temperature, the wall materials will shrink, causing the cracks to slightly increase; while in the high temperature of summer, the materials will expand and the cracks may be slightly closed or smaller. Humidity and precipitation: Humidity changes and precipitation infiltration into the wall will cause the material to expand or soften, especially some highly hygroscopic materials (such as bricks or gypsum). When moisture enters the wall material, it may aggravate the cracks or cause new cracks. Thermal expansion and contraction: Different materials have different expansion coefficients, which leads to stress concentration at the interface between materials when the temperature difference changes with the seasons (such as the change from winter to summer), which leads to the formation of cracks. Weathering: The long-term weathering of the climate will also affect the structural integrity of the wall. For example, walls in cold regions may be affected by freeze-thaw cycles, while walls in hot and humid regions are susceptible to corrosion by corrosive gases or salt. Therefore, seasonal factors have a significant impact on the distribution and development of cracks in building materials. Materials and techniques that adapt to temperature changes are often selected during design and construction to reduce these effects, so they are referred to as four-season walls.

[0040] like Figure 2 As shown, preferably, a prefabricated building exterior wall joint leakage detection system can also be provided. The prefabricated building exterior wall joint leakage detection system can include, on the one hand, a leakage information comprehensive concentration module having a connection seam width and depth dynamic change database of the prefabricated building exterior wall, wherein the connection seam width and depth dynamic change database records the connection seam width and depth of different fillers and the construction process information of different fillers sent by the 5G network when the sealing construction is carried out on the wall in four seasons at the same regional location, and on the other hand, it can also include multiple parts installed on the wall monitoring end, including a connection seam width and depth information integration module, a construction process information collection module, a 5G network information sending module, and a wall installation process leakage detection module.

[0041] The joint width and depth information integration module is used to collect the joint width and depth per unit time of the exterior wall of the prefabricated building. The construction process information collection module is used to collect the construction process information when the wall is sealed. The 5G network information sending module is used to obtain the joint width and depth per unit time and the construction process information and send them to the leakage information comprehensive concentration module using the 5G network.

[0042] The prefabricated building exterior wall joint leakage detection system may also include a joint width and depth analysis and judgment module, which is used to traverse the different filler joint widths, depths and the different filler construction process information sent by the four-season walls in the same area location using the 5G network that meet the safety limit values ​​in the joint width and depth dynamic change database and provide them to the wall installation process leakage detection module installed on the wall monitoring end. The safety limit value is the threshold value of the joint water tightness index displayed by the different filler joint widths and depths and the joint water tightness index reflected by the joint width and depth per unit time under different climatic conditions, and the leakage detection period of the different filler joint widths and depths meets the set waterproof requirements.

[0043] On this basis, the wall installation process leakage detection module on the wall will be able to obtain the construction process information of the different fillers that meet the safety limit value and perform leakage detection on the construction and installation process of the wall based on this information.

[0044] Preferably, the connection seam width and depth analysis and judgment module is arranged in the leakage information comprehensive concentration module, or the connection seam width and depth analysis and judgment module is installed on the wall monitoring end.

[0045] Preferably, the joint width and depth information integration module is a wall sampler installed at the wall monitoring end.

[0046] Preferably, the wall installation process leakage detection module is also used to perform other construction leakage detection modes to leak detect the construction and installation process of the wall when the connection seam width and depth analysis and judgment module fails to traverse the different filler connection seam widths and depths and the different filler construction process information that meet the safety limit values.

[0047] Preferably, the prefabricated building exterior wall joint leakage detection system further includes: A multimodal monitoring sensor installed on a wall monitoring end, the multimodal monitoring sensor being used to measure a change in a wall load of the wall; The multimodal monitoring sensor includes a strain gauge assembly, a displacement sensor assembly, a pressure sensor assembly, and an accelerometer assembly; The wall installation process leakage detection module is also used to obtain the wall load change measured by the multimodal monitoring sensor and determine whether the wall has building settlement based on the wall load change. If building settlement occurs, other construction leakage detection modes are used to leak detect the construction and installation process of the wall.

[0048] Those skilled in the art should understand that the technical advantages of the prefabricated building exterior wall joint leakage detection system based on the connection seam width and depth recognition technology according to the preferred embodiment as described above can be referred to the description of the prefabricated building exterior wall joint leakage detection method in the previous text, and some preferred settings in the leakage detection method described in the previous text are not mentioned when describing the prefabricated building exterior wall joint leakage detection system here, mainly considering that the relevant preferred settings can be combined with the prefabricated building exterior wall joint leakage detection system in a basically similar manner, and similar preferred effects can be achieved, so they will not be repeated here.

[0049] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A method for detecting leakage in joints of an assembled building exterior wall, characterized in that: The method includes: Collect the unit time connection seam width and depth of the outer wall of the prefabricated building and send the obtained unit time connection seam width and depth to the leakage information comprehensive concentration module using the 5G network. The leakage information comprehensive concentration module includes a dynamic change database of the connection seam width and depth of the outer wall of the prefabricated building. The connection seam width and depth dynamic change database records the connection seam width and depth of different fillers and the construction process information of different fillers sent by the 5G network when the sealing construction of the four seasons wall in the same area is carried out; The different filler connection seam widths and depths and the different filler construction process information sent by the four-season walls in the same area using the 5G network that meet the safety limit values ​​are traversed in the dynamic change database of the connection seam width and depth. The safety limit values ​​are the thresholds of the connection seam water tightness index displayed by the connection seam widths and depths of the different fillers and the connection seam water tightness index reflected by the connection seam widths and depths per unit time under different climatic conditions, and the leakage detection time periods of the connection seam widths and depths of the different fillers meet the set waterproof requirements; If the different filler connection seam widths, depths and the different filler construction process information that meet the safety limit values ​​cannot be traversed in the connection seam width and depth dynamic change database, other construction leakage detection modes are performed to detect the construction and installation process of the current wall. At the same time, the unit time connection seam width, depth and construction process information collected by the current wall are still sent to the connection seam width and depth dynamic change database using the 5G network; Monitor the wall load changes of the current wall, and determine whether the current wall has building settlement according to the wall load changes. If building settlement occurs, perform other construction leakage detection modes to detect the construction and installation process of the current wall; A database for dynamic changes in the width and depth of the connection seams is established on the wall monitoring server, and the wall monitoring server executes the steps of traversing the widths and depths of the connection seams of different fillers that meet the safety limit values ​​and the construction process information of the different fillers. The construction process information of the different fillers that meet the safety limit values ​​is then sent to the construction leakage detection system of the current wall, so that the construction leakage detection system performs leakage detection on the construction and installation process.

2. The method for detecting leakage of joints in outer walls of prefabricated buildings according to claim 1, characterized in that: The connection seam width and depth dynamic change database also records the connection seam width and depth dynamic changes detected from the connection seam widths and depths of different fillers using the set connection seam width and depth dynamic change leakage detection method. The connection seam width and depth dynamic changes include dynamic changes caused by temperature changes and dynamic changes caused by humidity.

3. The method for detecting leakage of joints in outer walls of assembled buildings according to claim 1, characterized in that: The step of traversing the different filler connection seam widths and depths that meet the safety limit values ​​and the different filler construction process information includes: Utilize the connection seam width and depth dynamic change leakage detection method to detect the connection seam width and depth dynamic change contained in the connection seam width and depth per unit time; By comparing the dynamic changes of the connection seam width and depth and the leakage detection period, the connection seam widths and depths of different fillers that meet the safety limit values ​​and the construction process information of the different fillers are traversed in the connection seam width and depth dynamic change database.

4. The method for detecting leakage of joints in outer walls of assembled buildings according to claim 1, characterized in that: The method further includes: By utilizing the dynamic changes of the connection seam width and depth, the connection seam widths and depths of different fillers recorded in the connection seam width and depth dynamic change database are divided into different connection seam risk factors; and the step of traversing the connection seam widths and depths of different fillers that meet the safety limit values ​​and the construction process information of the different fillers also includes: Determine the risk factor of the connecting seam to which it belongs by using the dynamic changes of the connecting seam width and depth contained in the connecting seam width and depth per unit time; The risk coefficients of the connecting seams having the same width and depth as the connecting seams per unit time are traversed in the connecting seam width and depth dynamic change database.

5. The method for detecting leakage of joints in outer walls of assembled buildings according to claim 4, characterized in that: The different connection joint risk factors are related to a variety of different wall material strengths or connection methods.

6. The method for detecting leakage of joints in outer walls of prefabricated buildings according to claim 1, characterized in that: The construction process information of different fillers includes surface treatment of the wall, filling method of the filler, maintenance and curing of the wall, and change of wall load.

7. Prefabricated building exterior wall joint leakage detection system, characterized in that: The system comprises: A leakage information comprehensive concentration module, wherein the leakage information comprehensive concentration module has a database of dynamic changes in the width and depth of the joints of the outer walls of prefabricated buildings, wherein the database records the width and depth of the joints of different fillers and the construction process information of different fillers sent by the 5G network when the sealing construction is carried out on the walls of the four seasons in the same area; The joint width and depth information integration module is used to collect the joint width and depth per unit time of the outer wall of the prefabricated building; A construction process information collection module, used to collect construction process information when the wall is undergoing sealing construction on the wall; A 5G network information sending module, used to obtain the connection seam width and depth per unit time and the construction process information and send them to the leakage information comprehensive concentration module using the 5G network; The joint width and depth analysis and judgment module is used to traverse the joint width and depth of different fillers and the construction process information of different fillers sent by the four-season wall in the same area using the 5G network that meet the safety limit value in the joint width and depth dynamic change database and provide it to the wall installation process leakage detection module installed on the wall monitoring end. The safety limit value is the threshold value of the joint water tightness index displayed by the joint width and depth of different fillers and the joint water tightness index reflected by the joint width and depth per unit time under different climatic conditions, and the leakage detection period of the joint width and depth of different fillers meets the set waterproof requirements; A wall installation process leakage detection module, used to perform leakage detection on the wall construction and installation process using the construction process information of different fillers that meet the safety limit value; The connection seam width and depth analysis and judgment module is arranged in the leakage information comprehensive concentration module, or the connection seam width and depth analysis and judgment module is installed on the wall monitoring end; The joint width and depth information integration module is a wall sampler installed at the wall monitoring end; The wall installation process leakage detection module is also used to perform other construction leakage detection modes to leak detect the construction and installation process of the wall when the connection seam width and depth analysis and judgment module fails to traverse the different filler connection seam widths, depths and the different filler construction process information that meet the safety limit values.

8. The assembly-type building exterior wall joint leakage detection system according to claim 7, characterized in that: The prefabricated building exterior wall joint leakage detection system further includes: a multi-modal monitoring sensor installed on a wall monitoring end, the multi-modal monitoring sensor being used to measure a wall load change of the wall; The multimodal monitoring sensor includes a strain gauge assembly, a displacement sensor assembly, a pressure sensor assembly, and an accelerometer assembly; The wall installation process leakage detection module is also used to obtain the wall load change measured by the multimodal monitoring sensor and determine whether the wall has building settlement based on the wall load change. If building settlement occurs, other construction leakage detection modes are used to leak detect the construction and installation process of the wall.

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