Scaffold stability multi-base-point monitoring system and use method

Abstract

The invention belongs to the technical field of scaffold stability monitoring, and particularly discloses a scaffold stability multi-base-point monitoring system and a use method, the system comprises a data acquisition unit and a data analysis unit in communication connection with the data acquisition unit; the data acquisition unit comprises a substrate, a tilt angle sensor, an angle sensor, a connecting rod, a connecting assembly, a first distance sensor and a second distance sensor; a tilt angle sensor is arranged in the middle of the upper end of the substrate; the angle sensor is arranged at the upper end of the tilt sensor; the other end of the connecting rod is movably connected with the vertical rod through a connecting assembly; the first distance sensor and the second distance sensor are arranged on the connecting assembly and used for measuring the distance from the connecting point of the connecting rod and the connecting assembly to the angle sensor and the distance from the connecting point of the vertical rod and the connecting assembly to the working ground. The problems of benchmark missing, single parameter, low system integration degree and the like in scaffold deformation monitoring are effectively solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of scaffold stability monitoring, and more particularly relates to a scaffold stability multi-base-point monitoring system and a use method. BACKGROUND

[0002] In modern construction processes, scaffolds, as an important part of support structures and working platforms, are widely used in various types of construction projects. Since their bearing capacity and structural stability are directly related to the safety of construction personnel and the quality of the project, relevant national regulations and industry standards have strict requirements for the safety of scaffold use. In particular, in high-rise and complex structure construction, deformation monitoring of scaffolds has become one of the key links to ensure construction safety. According to relevant standards such as the "Technical Code for Safety of Steel Tubular Scaffold with Couplers for Building Construction" (JGJ130-2011), the deformation parameters such as settlement, displacement, and inclination of the scaffold must be monitored regularly during its use after completion to prevent instability and even collapse of the scaffold due to uneven foundation settlement or unbalanced structure stress. With the acceleration of urbanization in China and the increase in large and super high-rise building projects, traditional manual monitoring methods have been difficult to meet the monitoring needs of high efficiency and high precision.

[0003] In view of the actual needs of scaffold deformation monitoring, the following technical means are currently mainly used in the industry: 1) the deformation sensor is directly installed on the scaffold upright, and the data is transmitted to the monitoring terminal through the wireless communication module; 2) visual observation tools such as measuring rulers are used, and the scaffold change value is read by manual regular reading; 3) an independent auxiliary scaffold is set up around the key upright, and sensors are arranged on the auxiliary structure to compare the deformation of the main scaffold. Among them, the first scheme relies on high-precision inclination sensors, strain gauges, or accelerometers and other equipment, which can dynamically capture the local or overall deformation trend of the scaffold; the second method relies more on manual experience judgment, which is suitable for small or temporary projects; the third method builds a relatively stable reference benchmark, which can theoretically improve the accuracy of monitoring, but also increases the construction cost and on-site management difficulty. In addition, some technologies also try to combine video image recognition technology to analyze the changes in the appearance characteristics of the scaffold to determine whether there is abnormal deformation.

[0004] Although the above methods have improved the automation level and data acquisition capabilities of scaffold deformation monitoring to a certain extent, they still have many shortcomings. For example, most sensors are installed directly on the scaffold body, lacking a fixed and stable reference point. This makes the measured deformation data susceptible to external environmental interference, such as wind load and construction vibration, which in turn reduces the credibility of the monitoring results. Secondly, existing monitoring systems generally focus on the collection of a single parameter (such as vertical settlement), ignoring potential risk factors such as lateral displacement and torsion, and are unable to fully reflect the overall state changes of the frame. Thirdly, in actual applications, it has been found that if the frame undergoes slight deformation, especially small vertical settlement in the early stages, it is often difficult to detect in time, thereby delaying the warning time and increasing safety hazards. In addition, some monitoring devices themselves may have additional impacts on the scaffold structure. For example, improper sensor installation position or unreasonable additional support structure will change the original force system and further aggravate the accumulation of errors. Summary of the Invention

[0005] In response to the above-mentioned defects or improvement needs of the existing technology, the present invention provides a multi-base point monitoring system for scaffolding stability and a method for use. The automated monitoring based on the Internet of Things technology realizes all-weather, real-time, and continuous data collection and analysis, effectively solving the problems of missing benchmarks, single parameters, and low system integration in scaffolding deformation monitoring.

[0006] In order to achieve the above-mentioned object, the present invention provides a multi-base-point monitoring system for scaffold stability, comprising: a data acquisition unit and a data analysis unit in communication with the data acquisition unit, wherein:

[0007] The data acquisition unit includes: a substrate, a tilt sensor, an angle sensor, a connecting rod, a connecting component, a first distance sensor and a second distance sensor;

[0008] The base plate is arranged on the working ground, and the tilt sensor is arranged at the middle of the upper end thereof;

[0009] The angle sensor is arranged at the upper end of the tilt sensor;

[0010] One end of the connecting rod is rotatably connected to the angle sensor, and the other end is movably connected to the vertical pole through the connecting assembly;

[0011] The first distance sensor and the second distance sensor are provided on the connecting assembly, and are used to measure the distance from the connection point between the connecting rod and the connecting assembly to the angle sensor and the distance from the connection point between the vertical pole and the connecting assembly to the working ground respectively;

[0012] The data analysis unit receives measurement information from multiple sensors to achieve all-weather, real-time, and continuous data collection and analysis.

[0013] Further, one of the vertical rods is connected with at least three data acquisition units, and the height of the connecting point between the connecting rod and the vertical rod in each data acquisition unit increases with the increase of the horizontal distance between the base plate and the vertical rod.

[0014] Further, when one of the vertical rods is connected with three data acquisition units, the connecting points between the vertical rod and the three connecting rods are located at one-ninth, one-half and seven-eighths of the vertical rod from bottom to top according to the height of the vertical rod.

[0015] Further, a plurality of connecting through holes are uniformly distributed on the base plate, and the base plate is detachably connected with the working ground through the connecting through holes and connecting bolts.

[0016] The surface area of the base plate is not less than 1.5 times the surface area of the bottom end of the inclination sensor.

[0017] Further, the connecting assembly comprises a connecting rod shaft sleeve, a vertical rod shaft sleeve, a connecting piece and a clamp.

[0018] The connecting rod shaft sleeve is movably sleeved on the outside of the connecting rod.

[0019] The vertical rod shaft sleeve is sleeved on the outside of the vertical rod and connected with the vertical rod through the clamp.

[0020] The connecting piece is a rigid coupling, and the two ends of the connecting piece are connected with the connecting rod shaft sleeve and the vertical rod shaft sleeve respectively.

[0021] Further, the vertical rod shaft sleeve is composed of two semicircular components, and the two components are precisely docked and fixed through corresponding pins and mounting holes arranged on the contact surfaces of the two components.

[0022] Further, the first distance sensor is arranged on the outside of the connecting rod shaft sleeve, and the second distance sensor is arranged on one side of the clamp through a connecting bolt.

[0023] Further, the inclination sensor, the angle sensor, the first distance sensor and the second distance sensor are all wireless sensors and are communicatively connected with the data analysis unit.

[0024] Further, the inclination sensor is of AR-WXQJY-02 type and comprises a LoRa communication module.

[0025] The angle sensor comprises an MCU-103 rotation angle sensor module and a LoRa communication module, and the rotation angle sensor module is rotatably connected with the connecting rod.

[0026] The first distance sensor and the second distance sensor are both laser sensors, and their model is HD-2NJ112, and both include a LoRa communication module.

[0027] Another aspect of the present application provides a method for using the scaffold stability multi-base point monitoring system, which is implemented by using the multi-base point monitoring system as described above, and includes the following steps:

[0028] S1: after the scaffold is erected, the installation position of the base plate is calibrated according to the to-be-monitored vertical rod on the working ground, and a screw rod is pre-buried, then the base plate is installed and leveled;

[0029] S2: the connection area of the vertical rod and the connecting rod is calibrated, the vertical rod shaft sleeve is stably fixed outside the vertical rod through a clamp at the connection area, then the included angle between the connecting rod shaft sleeve and the vertical rod shaft sleeve is adjusted, the middle through hole is directed towards the corresponding angle sensor, one end of the connecting rod is inserted into the connecting rod shaft sleeve, and the other end is connected with the angle sensor;

[0030] S3: after the data acquisition unit is installed without error, the included angle between the connecting rod and the horizontal plane is measured as α0 by manual measurement, the initial distance from the connecting point of the connecting assembly to the angle sensor is measured as L0 by the first distance sensor, and the initial distance from the connecting point of the vertical rod and the connecting assembly to the working ground is measured as H0 by the second distance sensor;

[0031] S4: the vertical rod is monitored in real time, the lateral offset angle of the vertical rod is indirectly obtained as β by the inclination sensor, the vertical direction angle change of the connecting rod is measured as α by the angle sensor, the distance from the connecting point of the connecting assembly to the angle sensor is measured as L by the first distance sensor, and the distance from the connecting point of the vertical rod and the connecting assembly to the working ground is measured as H by the second distance sensor;

[0032] S5: the settlement amount and the lateral deformation amount of the measuring point of the vertical rod are calculated by the data analysis unit through the original data and the subsequent monitoring data in steps S3 and S4 as follows:

[0033] ΔX = Lcos(α0+α)sinβ

[0034] ΔY = Lcos(α0+α)cosβ-L0cosα0

[0035] ΔZ = H0-H

[0036] In the formula, ΔX is the deformation amount of the measuring point of the vertical rod in the horizontal plane X direction, with the unit of mm; ΔY is the deformation amount of the measuring point of the vertical rod in the horizontal plane Y direction, with the unit of mm; and ΔZ is the settlement amount of the vertical rod, with the unit of mm.

[0037] S6: repeating steps S1-S5, judging the stability of the scaffold according to the settlement and transverse deformation of the plurality of vertical poles, ensuring that it meets the specifications, if not, the data analysis unit sends a warning signal through light, image or audio, and then manual intervention is performed.

[0038] Overall, compared with the prior art, the above technical solutions conceived by the present application can achieve the following beneficial effects:

[0039] 1. The multi-base-point monitoring system of the present application, by the inclination sensor provided on the base plate, the base plate is leveled to provide a stable reference plane for other sensors, ensuring measurement accuracy; secondly, multiple data acquisition units monitor the same vertical pole from different positions and multiple angles, through the cooperative work of multi-angle and distance sensors, the horizontal and elevation position information of the vertical pole can be accurately obtained, thereby improving the accuracy of settlement and deformation degree judgment, effectively solving the problem of single-point observation error accumulation; in addition, the design of the connecting rod and the vertical rod connected by the connecting assembly can reduce the influence on the scaffold structure, avoid possible data acquisition errors and safety risks, and improve the reliability and comprehensiveness of the monitoring as a whole; and based on the automatic monitoring of Internet of Things technology, all-weather, real-time and continuous data acquisition and analysis are realized, effectively solving the problems of missing reference, single parameter and low system integration in scaffold deformation monitoring.

[0040] 2. The multi-base-point monitoring system of the present application, by multiple data acquisition units observing the vertical pole from different directions and heights, forming a spatial geometric constraint, which can effectively avoid the data distortion problem caused by local disturbance or installation error of a single observation point, and through cross verification of the data of each measuring point, abnormal data can be identified and removed in time, improving the reliability of the overall monitoring result; secondly, through the assembly and leveling of multiple base plates, the stability of the base plate and the working ground connection can be effectively ensured, providing a stable reference plane for the entire monitoring system, further improving the accuracy of multi-point monitoring and the reliability of the vertical pole settlement and deformation degree judgment, effectively solving the problem of increased measurement accuracy error caused by transfer error in single-point observation.

[0041] 3. The multi-base point monitoring system of the present application, by means of the connecting rod sleeve and the vertical rod sleeve, the connecting rod and the vertical rod are connected respectively, at the same time, the connecting rod sleeve and the vertical rod sleeve are connected by the connecting piece, so that the connecting rod can rotate horizontally and rotate up and down with the angle sensor, thereby ensuring the stability of the connection between the connecting rod and the vertical rod, avoiding the interference of the traditional rigid connection on the stress state of the vertical rod, reducing the additional stress risk caused by the installation of the monitoring device, ensuring the authenticity and reliability of the monitoring data, at the same time, cooperating with the angle sensor can effectively improve the sensitivity and response speed of the monitoring system to key parameters such as settlement and inclination, and the adaptability and measurement accuracy of the deformation state of the vertical rod of the scaffold.

[0042] 4. The multi-base point monitoring system of the present application, by configuring a communication module in various sensors, stable data transmission between sensor nodes and gateways can be realized, significantly improving the overall communication efficiency and reliability of the system. Moreover, the module supports long-distance communication, so that the sensor can ensure smooth data return even if it is deployed in remote or complex terrain areas, greatly expanding the monitoring range; secondly, its low-power feature enables the sensor node to run for a long time with a battery, reducing energy dependence and maintenance costs, and is suitable for scenarios where wiring or power supply is limited; in addition, it has good penetration ability and anti-interference ability, and can maintain stable communication quality in harsh electromagnetic environments, ensuring the continuity and integrity of data transmission. BRIEF DESCRIPTION OF DRAWINGS

[0043] Figure 1 Side view of the data acquisition unit of the embodiment of the present application assembled to the scaffold area;

[0044] Figure 2 Top view of the single data acquisition unit of the embodiment of the present application assembled to the vertical rod;

[0045] Figure 3 Top view of the three data acquisition units of the embodiment of the present application assembled to the vertical rod;

[0046] Figure 4 Front view of the substrate of the embodiment of the present application assembled to the working surface;

[0047] Figure 5 Top view of the substrate of the embodiment of the present application assembled to the working surface;

[0048] Figure 6 Structural schematic diagram of the connecting assembly connecting the connecting rod and the vertical rod of the embodiment of the present application;

[0049] Figure 7 Structural schematic diagram of the vertical rod sleeve of the embodiment of the present application;

[0050] Figure 8 is a structural schematic diagram of the embodiment A of the present application;

[0051] Figure 9 is a structural schematic diagram of the data analysis unit of the embodiment of the present application;

[0052] Figure 10 is a step flow schematic diagram of the method for using the multi-base-point monitoring system of the embodiment of the present application.

[0053] In all the drawings, the same reference signs represent the same technical features, specifically: 1-data acquisition unit, 11-base plate, 12-inclination sensor, 13-angle sensor, 14-connecting rod, 15-connecting assembly, 151-rod shaft sleeve, 152-rod shaft sleeve, 153-connector, 154-clamp, 16-first distance sensor, 17-second distance sensor, 2-data analysis unit, 21-processor, 22-communication bus, 23-user interface, 24-network interface, 25-memory, 26-output warning module, 3-working ground, 4-rod, 5-concrete structure to be cast. DETAILED DESCRIPTION

[0054] In order to make the objectives, technical solutions and advantages of the present application clearer and more comprehensible, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other.

[0055] Embodiment 1

[0056] As Figures 1 to 9As shown, embodiment 1 of the present invention provides a multi-base point monitoring system for scaffold stability, comprising: a data acquisition unit 1 and a data analysis unit 2 communicatively connected to the data acquisition unit 1; the data acquisition unit 1 comprises: a substrate 11, an inclination sensor 12, an angle sensor 13, a connecting rod 14, a connecting assembly 15, a first distance sensor 16 and a second distance sensor 17; the substrate 11 is arranged on the working ground 3, and the inclination sensor 12 is provided at the middle of its upper end; the angle sensor 13 is arranged at the upper end of the inclination sensor 12; one end of the connecting rod 14 is rotatably connected to the angle sensor 13, and the other end is movably connected to the vertical pole 4 through the connecting assembly 15; the first distance sensor 16 and the second distance sensor 17 are arranged on the connecting assembly 15, and are respectively used to measure the distance from the connection point of the connecting rod 14 and the connecting assembly 15 to the angle sensor 13 and the distance from the connection point of the vertical pole 4 and the connecting assembly 15 to the working ground 3. During use, the base plate 11 is leveled by the inclination sensor 12 provided on the base plate 11, providing a stable reference plane for other sensors to ensure measurement accuracy; secondly, the multiple data acquisition units 1 monitor the same upright 4 from different positions and multiple angles. Through the coordinated work of multi-angle and distance sensors, the plane and elevation position information of the upright 4 can be accurately obtained, thereby improving the accuracy of judgment of settlement and deformation degree, and effectively solving the problem of accumulation of single-point observation errors; in addition, the design of the movable connection between the connecting rod 14 and the upright 4 through the connecting assembly 15 can reduce the impact on the scaffolding structure, avoid possible data acquisition errors and safety risks, and improve the overall reliability and comprehensiveness of monitoring. The multi-base point monitoring system of the present invention realizes all-weather, real-time, and continuous data acquisition and analysis based on the automated monitoring of the Internet of Things technology, effectively solving the problems of missing benchmarks, single parameters, and low system integration in scaffolding deformation monitoring.

[0057] like Figures 1 to 5 As shown, one upright pole 4 is connected to at least three data acquisition units 1 at the same time, and the height of the connection point between the connecting rod 14 and the upright pole 4 in each data acquisition unit 1 increases as the horizontal distance from the base plate 11 to the upright pole 4 increases.

[0058] In an optional embodiment, when one upright pole 4 is simultaneously connected to three data acquisition units 1, the connection points between the upright pole 4 and the three connecting rods 14 are located at one-ninth, one-half, and seven-eighths of the height of the upright pole 4, respectively, from bottom to top. This allows for a more accurate depiction of the overall deformation state of the upright pole through the uneven placement of monitoring points, effectively improving the reliability and accuracy of the monitoring results. It will be appreciated that the second distance sensors 17 on the multiple data acquisition units 1 are not located in the same vertical plane to avoid data loss due to occlusion.

[0059] The substrate 11 is provided with a plurality of connecting through holes uniformly distributed thereon, and is detachably connected with the working ground 3 through the connecting through holes and connecting bolts.

[0060] The surface area of the substrate 11 is not less than 1.5 times the surface area of the bottom end of the inclination sensor 12.

[0061] In an optional embodiment, a leveling nut is sleeved on the connecting screw between the substrate 11 and the working ground, so as to simplify the leveling process of the substrate 11 and improve the work efficiency.

[0062] It should be noted that, during the monitoring process, the inclination sensor 12 can also monitor the attitude change of the substrate 11, so as to monitor the settlement of the working ground 3.

[0063] It can be understood that, through the above design, the plurality of data acquisition units 1 are used to synchronously observe the vertical rod from different directions and heights, a spatial geometric constraint is formed, the data distortion problem caused by local disturbance or installation error of a single observation point can be effectively avoided, and through cross verification of data of each measuring point, abnormal data can be identified and removed in time, so as to improve the reliability of the overall monitoring result; secondly, through the assembly and leveling process of the plurality of substrates 11, the connection stability of the substrate 11 and the working ground 3 can be effectively ensured, a stable reference plane is provided for the entire monitoring system, and the accuracy of multi-point monitoring and the reliability of judging the settlement and deformation degree of the vertical rod 4 are further improved, so as to effectively solve the problem that the measurement accuracy error is increased due to the transmission error in single-point observation.

[0064] As shown in Figures 1 to 8 The connecting assembly 15 comprises a connecting rod shaft sleeve 151, a vertical rod shaft sleeve 152, a connecting piece 153 and a clamp 154; the connecting rod shaft sleeve 151 is movably sleeved outside the connecting rod 14; the vertical rod shaft sleeve 152 is sleeved outside the vertical rod 4 and connected with the vertical rod 4 through the clamp 154; the connecting piece 153 is a rigid coupling, and two ends of the connecting piece 153 are connected with the connecting rod shaft sleeve 151 and the vertical rod shaft sleeve 152 respectively.

[0065] In an optional embodiment, the vertical rod shaft sleeve 152 is composed of two semicircular components, the two components are precisely connected and fixed through corresponding pin shafts and mounting holes arranged on contact surfaces of the two components, so that the data acquisition unit 1 can be conveniently installed on the completed scaffold, and the stability and reliability of the connection are ensured.

[0066] It can be understood that, through the above design, the connecting rod shaft sleeve 151 and the vertical rod shaft sleeve 152 are sleeved with the connecting rod 14 and the vertical rod 4 respectively, and the connecting rod shaft sleeve 151 and the vertical rod shaft sleeve 152 are connected by the connecting piece 153, so that the connecting rod 14 can rotate horizontally and rotate up and down by the angle sensor 13, thereby avoiding the interference of the traditional rigid connection on the stress state of the vertical rod 4 under the condition of ensuring the stability of the connection between the connecting rod 14 and the vertical rod 4, reducing the additional stress risk caused by the installation of the monitoring device, ensuring the authenticity and reliability of the monitoring data, and effectively improving the sensitivity and response speed of the monitoring system to key parameters such as settlement and inclination, and the adaptability and measurement accuracy of the deformation state of the vertical rod of the scaffold.

[0067] As shown in Figures 1 to 6 , Figure 8 The first distance sensor 16 is arranged outside the connecting rod shaft sleeve 151, and the second distance sensor 17 is arranged on one side of the clamp 154 through a connecting bolt.

[0068] The inclination sensor 12, the angle sensor 13, the first distance sensor 16, and the second distance sensor 17 are all wireless sensors and are in communication connection with the data analysis unit 2.

[0069] In an optional embodiment, the inclination sensor 12 is of AR-WXQJY-02 type and includes a LoRa communication module.

[0070] In an optional embodiment, the angle sensor 13 includes an MCU-103 rotation angle sensor module and a LoRa communication module, and is rotationally connected with the connecting rod 14 through the rotation angle sensor module to accurately measure the angle change of the connecting rod 14 during the monitoring process.

[0071] In an optional embodiment, the first distance sensor 16 and the second distance sensor 17 are both laser sensors of HD-2NJ112 type and both include a LoRa communication module.

[0072] Preferably, the connecting rod 14 is mainly made of light aluminum alloy material to reduce the load on the angle sensor 13.

[0073] It can be understood that through the above design, the LoRa communication module is configured in various sensors, which can realize stable data transmission between the sensor nodes and the gateway, significantly improve the overall communication efficiency and reliability of the system. Moreover, the LoRa module supports long-distance communication, so that the sensor can ensure smooth data return even if it is deployed in remote or complex terrain areas, greatly expanding the monitoring range; secondly, its low power consumption feature enables the sensor node to run for a long time with a battery, reducing energy dependence and maintenance costs, and is suitable for scenarios where wiring or power supply is limited; in addition, LoRa has good penetration and anti-interference capabilities, which can maintain stable communication quality in harsh electromagnetic environments, ensuring the continuity and integrity of data transmission.

[0074] As shown in Figure 9 The data analysis unit 2 includes a processor 21, a network interface 24, and a memory 25, and can further include a user interface 23 and at least one communication bus 22. The communication bus 22 is used to realize the connection communication between the components. The user interface 23 can include a display screen and a keyboard, and the optional user interface 23 can further include a standard wired interface and a wireless interface. The network interface 24 can optionally include a standard wired interface, a wireless interface (such as a WI-FI interface), and a LoRa communication module. The LoRa communication module of the network interface 24 performs down-conversion, amplification, and analog-to-digital conversion processing on the received LoRa signal of the corresponding numbered sensor through the built-in radio frequency front-end circuit, and restores the original spread spectrum code stream; then, the code stream is restored to the corresponding digital data frame through a demodulation algorithm (such as a matching filter or a fast Fourier transform based on Chirp signal characteristics), and is handed over to the processor 21 for analysis and fusion processing; in this process, the system can use an adaptive rate (Adaptive Data Rate, ADR) mechanism to dynamically adjust the communication parameters (such as the spread factor, bandwidth, and transmission power) to optimize the communication quality. The memory 25 can be a high-speed RAM memory or a non-volatile memory such as at least one disk memory. The memory 25 can also be at least one storage device located away from the aforementioned processor 21.

[0075] Further, the network interface 24 can provide network communication functions; the user interface 23 is mainly used to provide an input interface for the user; and the processor 21 can be used to call the device control application program stored in the memory 25.

[0076] In an optional embodiment, the data analysis unit 2 further includes an output warning module 26, which includes an LED lamp, a screen, or a loudspeaker, and can accept the processor 21 signal and send a warning signal.

[0077] It should be understood that in some possible implementations, the above-mentioned processor 21 can be a central processing unit (CPU), and the processor can also be other general-purpose processors, DSPs, ASICs, FPGAs or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The memory 25 can include read-only memory and random access memory, and provide instructions and data for the processor. Part of the memory 25 can also include non-volatile random access memory. For example, the memory can also store device type information.

[0078] It can be understood that through the above design, various sensors in the plurality of data acquisition units 1 are uniquely numbered according to the data acquisition units 1 to which the sensors belong, and the signals collected by a single data acquisition unit 1 are independently processed to obtain the state information of the upright rod 4. At the same time, based on the multi-base-point cooperation, the monitoring results of the plurality of data acquisition units 1 on the same upright rod 4 are summarized and compared and analyzed, which can identify and eliminate data points with large abnormality or deviation, significantly improve the reliability and accuracy of the judgment of the parameters such as settlement, inclination and displacement of the upright rod 4, enhance the perception ability of complex deformation modes, and show higher sensitivity and early warning ability when dealing with strong hidden structural risks such as non-uniform settlement and local instability, so that high-precision and multi-dimensional evaluation of the deformation state of the scaffold structure can be realized through real-time monitoring of the plurality of upright rods 4.

[0079] Embodiment 2

[0080] As shown in Figure 10 Based on embodiment 1, the application embodiment 2 provides a use method of a scaffold stability multi-base-point monitoring system, which comprises the following steps:

[0081] S1: After the scaffold is erected, the installation position of the base plate 11 is calibrated according to the to-be-monitored upright rod 4 on the working ground 3, and the screw rod is pre-buried, then the base plate 11 is installed and leveled;

[0082] S2: The connection area of the upright rod 4 and the connecting rod 14 is calibrated, the upright rod shaft sleeve 152 is stably fixed outside the upright rod 4 through the clamp 154 at the connection area, then the included angle between the connecting rod shaft sleeve 151 and the upright rod shaft sleeve 152 is adjusted, the middle through hole thereof is directed to the corresponding angle sensor 13, one end of the connecting rod 14 is inserted into the connecting rod shaft sleeve 151, and the other end is connected with the angle sensor 13;

[0083] S3: After checking that the data acquisition unit 1 is installed correctly, the angle between the connecting rod 14 and the horizontal plane is measured manually to be a0, at the same time, the initial distance from the connecting point between the connecting rod 14 and the connecting assembly 15 to the angle sensor 13 is measured by the first distance sensor 16 to be L0, and the initial distance from the connecting point between the vertical rod 4 and the connecting assembly 15 to the working ground 3 is measured by the second distance sensor 17 to be H0;

[0084] S4: The vertical rod 4 is monitored in real time, and the lateral deviation angle of the vertical rod 4 is indirectly obtained by the inclination sensor 12 to be β, the vertical angle change of the connecting rod 14 is measured by the angle sensor 13 to be a, the distance from the connecting point between the connecting rod 14 and the connecting assembly 15 to the angle sensor 13 is measured by the first distance sensor 16 to be L, and the distance from the connecting point between the vertical rod 4 and the connecting assembly 15 to the working ground 3 is measured by the second distance sensor 17 to be H;

[0085] S5: The settlement and lateral deformation of the measuring point of the vertical rod 4 are calculated by the data analysis unit 2 based on the original data in steps S3 and S4 and the subsequent monitoring data as follows:

[0086] ΔX=L cos(α0+α)sinβ

[0087] ΔY=L cos(α0+α)cosβ-L0 cosα0

[0088] ΔZ=H0-H

[0089] In the formula, ΔX is the deformation of the measuring point of the vertical rod 4 in the horizontal X direction, with the unit of mm; ΔY is the deformation of the measuring point of the vertical rod 4 in the horizontal Y direction, with the unit of mm; and ΔZ is the settlement of the vertical rod 4, with the unit of mm.

[0090] S6: Steps S1 to S5 are repeated, the settlement and lateral deformation of the vertical rod 4 are used to judge the stability of the scaffold, and it is ensured that the scaffold meets the specifications. If the scaffold does not meet the specifications, the data analysis unit 2 sends a warning signal through light, image or audio, and then manual intervention is performed.

[0091] Other technical features and embodiments 1 are the same and can achieve the same technical effects, which will not be described here.

[0092] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), if the certain posture changes, the directional indications also change accordingly.

[0093] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0094] In the present application, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes the elements inherent to such process, method, article or equipment. Without more limitations, the elements defined by the statement "comprising" do not exclude the presence of other identical elements in the process, method, article or equipment including the elements.

[0095] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit it; the skilled in the art can understand that the above description is only the preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A multi-point monitoring system for scaffolding stability, characterized in that: include: A data acquisition unit (1) and a data analysis unit (2) communicatively connected to the data acquisition unit (1), wherein: The data acquisition unit (1) comprises: a base plate (11), a tilt sensor (12), an angle sensor (13), a connecting rod (14), a connecting assembly (15), a first distance sensor (16), and a second distance sensor (17); The base plate (11) is arranged on the working ground (3), and the tilt sensor (12) is arranged at the middle of the upper end thereof; The angle sensor (13) is arranged at the upper end of the tilt sensor (12); One end of the connecting rod (14) is rotatably connected to the angle sensor (13), and the other end is movably connected to the vertical rod (4) through the connecting assembly (15); The first distance sensor (16) and the second distance sensor (17) are provided on the connecting assembly (15), and are used to measure the distance from the connection point between the connecting rod (14) and the connecting assembly (15) to the angle sensor (13), and the distance from the connection point between the vertical rod (4) and the connecting assembly (15) to the working ground (3), respectively; The data analysis unit (2) receives measurement information from multiple sensors to achieve all-weather, real-time, and continuous data collection and analysis.

2. The multi-point monitoring system according to claim 1, characterized in that: One upright pole (4) is simultaneously connected to at least three data acquisition units (1), and the height of the connection point between the connecting rod (14) and the upright pole (4) in each data acquisition unit (1) increases as the horizontal distance from the base plate (11) to the upright pole (4) increases.

3. The multi-point monitoring system according to claim 2, characterized in that: When one of the vertical poles (4) is connected to three of the data acquisition units (1) at the same time, the connection points between the vertical pole (4) and the three connecting rods (14) are located at one-ninth, one-half and seven-eighths of the height of the vertical pole (4) from bottom to top, respectively.

4. The multi-base point monitoring system according to claim 1, characterized in that: The base plate (11) is evenly distributed with a plurality of connection through holes, and is detachably connected to the working floor (3) via the connection through holes and connection bolts; The surface area of ​​the substrate (11) is not less than 1.5 times the surface area of ​​the bottom end of the tilt sensor (12).

5. The multi-base point monitoring system according to any one of claims 1 to 4, characterized in that: The connecting assembly (15) comprises: a connecting rod sleeve (151), a vertical rod sleeve (152), a connecting piece (153) and a clamp (154); The connecting rod sleeve (151) is movably sleeved on the outside of the connecting rod (14); The vertical pole sleeve (152) is sleeved on the outside of the vertical pole (4) and connected to the vertical pole (4) via the clamp (154); The connecting piece (153) is a rigid coupling, and its two ends are respectively connected to the connecting rod sleeve (151) and the vertical rod sleeve (152).

6. The multi-point monitoring system according to claim 5, characterized in that: The vertical rod sleeve (152) is composed of two semicircular components, and the two components are precisely docked and fixed through corresponding pins and mounting holes provided on their contact surfaces.

7. The multi-point monitoring system according to claim 5, characterized in that: The first distance sensor (16) is arranged on the outside of the connecting rod sleeve (151), and the second distance sensor (17) is arranged on one side of the clamp (154) via a connecting bolt.

8. The multi-base point monitoring system according to any one of claims 1 to 4, characterized in that: The tilt sensor (12), the angle sensor (13), the first distance sensor (16), and the second distance sensor (17) are all wireless sensors and are communicatively connected to the data analysis unit (2).

9. The multi-base point monitoring system according to claim 8, characterized in that: The tilt sensor (12) is of model AR-WXQJY-02 and includes a LoRa communication module; The angle sensor (13) includes an MCU-103 rotation angle module and a LoRa communication module, and is rotationally connected to the connecting rod (14) through the rotation angle module; The first distance sensor (16) and the second distance sensor (17) are both laser sensors, the model of which is HD-2NJ112, and both include LoRa communication modules.

10. A method for using a multi-base-point monitoring system for scaffold stability, implemented by using the multi-base-point monitoring system according to any one of claims 1 to 9, characterized in that: The steps include: S1: After the scaffolding is erected, the installation position of the base plate (11) is calibrated on the working ground (3) according to the vertical pole (4) to be monitored and screws are embedded in advance. Then, the base plate (11) is installed and leveled; S2: Marking the connection area with the connecting rod (14) on the vertical rod (4), and stably fixing the vertical rod sleeve (152) on the outside of the vertical rod (4) in the connection area by means of a clamp (154), then adjusting the angle between the connecting rod sleeve (151) and the vertical rod sleeve (152) so that the central through hole thereof faces the corresponding angle sensor (13), and inserting one end of the connecting rod (14) into the connecting rod sleeve (151), and then connecting the other end thereof to the angle sensor (13); S3: After the data acquisition unit (1) is correctly installed, the angle between the connecting rod (14) and the horizontal plane is manually measured to be ɑ0. At the same time, the initial distance from the connection point between the connecting rod (14) and the connecting component (15) to the angle sensor (13) is measured to be L0 by the first distance sensor (16), and the initial distance from the connection point between the vertical pole (4) and the connecting component (15) to the working ground (3) is measured to be H0 by the second distance sensor (17); S4: Real-time monitoring of the vertical pole (4) is performed, and the lateral offset angle of the vertical pole (4) is indirectly obtained as β through the inclination sensor (12), the vertical angle change of the connecting rod (14) is measured as ɑ by the angle sensor (13), the distance from the connection point of the connecting rod (14) and the connecting component (15) to the angle sensor (13) is measured as L by the first distance sensor (16), and the distance from the connection point of the vertical pole (4) and the connecting component (15) to the working ground (3) is measured as H by the second distance sensor (17); S5: Based on the original data and subsequent monitoring data in steps S3 and S4, the data analysis unit (2) calculates the settlement and lateral deformation of the measuring point of the vertical pole (4) as follows: ΔX=L cos(α0+α)sinβ ΔY=L cos(α0+α)cosβ-L0cosα0 ΔZ=H0-H Wherein, ΔX is the deformation of the measuring point of the vertical pole (4) in the X direction of the horizontal plane, in mm; ΔY is the deformation of the measuring point of the vertical pole (4) in the Y direction of the horizontal plane, in mm; ΔZ is the settlement of the vertical pole (4), in mm; S6: Repeat steps S1 to S5, and judge the stability of the scaffolding according to the settlement and lateral deformation of the plurality of uprights (4) to ensure that it complies with the specifications. If it does not comply, the data analysis unit (2) sends a warning signal through light, image or audio, and then performs manual intervention.

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