A folding early warning operation platform and early warning system configured with sensors

Abstract

The application discloses a folding early warning operation platform and an early warning system, and the operation platform comprises two oppositely arranged first main frames, second main frames and platform plates; a folding assembly is rotationally connected between the two vertical rods of the first main frame and the second main frame; a diagonal pull rod is rotationally connected between the first main frame and the second main frame; each of the first group of corresponding transverse rods of the first main frame and the second main frame is embedded with an inclination sensor; the second group of corresponding transverse rods of the first main frame and the second main frame are each embedded with an axial force sensor; the data sensed by the sensors is input into a neural network model to generate alarm information; and an electronic fence is arranged in the platform plate, and the range of the electronic fence is dynamically adjusted according to the data sensed by the sensors and the neural network. The operation platform can be folded and contracted, is simple and convenient to erect and is easy to move; and a safety area can be dynamically set.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building engineering construction, in particular to a folding early warning operation platform provided with sensors and an early warning system. BACKGROUND

[0002] Low-altitude scaffolding or operation platform is a common tool for roof decoration and external wall painting. Construction sites usually use various temporary construction platforms to complete construction. Due to the influence of multiple factors such as construction site environment and erection materials, this erection method has variable effects on transportation before erection, construction efficiency, safety, etc., especially in terms of safety and stability. Existing small tools lack effective monitoring and verification methods.

[0003] Traditional scaffolding or operation platform safety monitoring often monitors the load-bearing condition of the sensor by focusing on the mechanical sensor. The final logical judgment can only alarm the overloading condition. However, such monitoring is often one-sided and cannot accurately perceive the specific load-bearing condition on the construction surface, especially the weight of each area of the platform plate of the scaffolding or operation platform. In addition, only through the mechanical sensor, it is impossible to comprehensively perceive various data parameters such as acceleration and deformation. SUMMARY

[0004] Therefore, the present application provides a folding early warning operation platform provided with sensors, which can solve the technical problems of the existing operation platform that is difficult to shrink and difficult to accurately and safely monitor.

[0005] In order to solve the above technical problems, the present application is implemented as follows.

[0006] A folding early warning operation platform provided with sensors, the folding early warning operation platform comprises:

[0007] Two oppositely arranged main frames, the two main frames are a first main frame 1 and a second main frame 2, each main frame comprises two vertically arranged vertical rods and a plurality of transversely fixed transverse rods between the vertical rods,

[0008] The first main frame 1 and the second main frame 2 are rotatably connected with a folding assembly 3 between the two vertical rods opposite to each other, the folding assembly 3 is foldable, so that the horizontal distance between the first main frame 1 and the second main frame 2 becomes smaller;

[0009] The diagonal rod 4 is rotatably connected between the first main frame 1 and the second main frame 2, and the included angle between the diagonal rod and the horizontal plane is 0°-90°; the diagonal rod 4 is a foldable rod or a telescopic rod;

[0010] Each of the transverse rods corresponding to the first group of the first main frame 1 and the second main frame 2 is embedded with an inclination sensor; each of the transverse rods corresponding to the second group of the first main frame 1 and the second main frame 2 is embedded with an axial force sensor; and horizontal and detachable platform plates are arranged on the first main frame and the second main frame.

[0011] Preferably, the two vertical rods of the first main frame 1 are a first vertical rod 11 and a second vertical rod 12 respectively; the two vertical rods of the second main frame 2 are a third vertical rod 21 and a fourth vertical rod 22 respectively; and the first vertical rod 11 and the third vertical rod 21 are opposite to each other, and the second vertical rod 12 and the fourth vertical rod 22 are opposite to each other.

[0012] The folding assembly is a lateral folding mechanism, which includes a first folding part 31 and a second folding part 32, one end of the first folding part 31 is rotationally connected with the first vertical rod 11, one end of the second folding part 32 is rotationally connected with the third vertical rod 21, and the other end of the first folding part 31 is connected with the other end of the second folding part 32 through a vertical pin shaft 33; the horizontal length of the folding assembly after folding is less than the length of the transverse rod.

[0013] Preferably, the horizontal length of the first folding part 31 and the second folding part 32 is less than the length of the transverse rod; and the horizontal distance between the second vertical rod 12 and the fourth vertical rod 22 and the diagonal rod 4 is less than half of the length of the transverse rod.

[0014] Preferably, when the diagonal rod is a foldable rod, the length of the diagonal rod 4 after folding is less than the length of the vertical rod, and when the diagonal rod is not folded, the straight rod is locked through a locking mechanism.

[0015] Preferably, each of the transverse rods of the first main frame 1 corresponds to a transverse rod of the second main frame 2, forming a corresponding group of transverse rods, which means that the plane formed by the two transverse rods is horizontal; any transverse rod of the first main frame 1 is rotationally connected with one end of the diagonal rod 4, and any transverse rod of the second main frame 2 is rotationally connected with the other end of the diagonal rod 4, and the plane formed by the transverse rod of the first main frame 1 and the transverse rod of the second main frame 2 is not horizontal.

[0016] Preferably, the inclination sensor is used to detect the inclination angle of the folding early warning operation platform relative to the horizontal plane, and the axial force sensor is used to detect the force value data borne by the folding early warning operation platform.

[0017] An early warning system, which includes the folding early warning operation platform as described above, the early warning system includes the folding early warning operation platform as described above which is configured with sensors, and the early warning system further includes:

[0018] a computing module, a control module, a database, a monitoring module, a sensor and an alarm module configured in a personal terminal of a construction worker;

[0019] The sensor in the personal terminal of the construction worker comprises a position sensor and an acceleration sensor;

[0020] The computing module acquires the real-time position of the construction worker and the corresponding personnel code sensed by the sensor in the personal terminal of the construction worker, acquires the weight of the construction worker according to the personnel code, acquires the inclination angle of the foldable early warning operation platform relative to the horizontal plane and the force value data borne by the foldable early warning operation platform, and determines a safety area based on the real-time position of the construction worker, the weight of the construction worker, the inclination angle of the foldable early warning operation platform relative to the horizontal plane, the force value data borne by the foldable early warning operation platform and a preset safety rule, the safety area being a sub-area of the platform plate;

[0021] The control module sets an electronic fence in the platform plate based on the safety area, the alarm module sends a falling early warning to the construction worker when the real-time position of the construction worker exceeds the safety area and the acceleration detected by the acceleration sensor does not exceed a preset threshold, the alarm module sends a falling alarm to a safety administrator when the real-time position of the construction worker exceeds the safety area and the acceleration detected by the acceleration sensor exceeds a first preset threshold, the personnel information of the construction worker is stored into the database when the duration of the falling alarm exceeds a second preset threshold, and the monitoring module provides the safety administrator with the personnel information, behavior information of the construction worker, the state and loss of the foldable early warning operation platform.

[0022] Preferably, the real-time position of the construction worker, the weight of the construction worker, the inclination angle of the foldable early warning operation platform relative to the horizontal plane, and the force value data borne by the foldable early warning operation platform are input into the first neural network model which is pre-trained, and the first neural network model outputs the force distribution of each sub-region of the operation platform, and the force distribution of each sub-region corresponds to a value which is added to 1; the real-time position of the construction worker, the weight of the construction worker, the inclination angle of the foldable early warning operation platform relative to the horizontal plane, the force value data borne by the foldable early warning operation platform, the output of the first neural network model, and a preset safety rule are input into a second neural network model, the model structure of the second neural network model is the same as that of the first neural network model, the parameters and weights of the first neural network model are migrated as the initial parameters and initial weights of the second neural network model, the migrated parameters and weights are exponentially corrected when the second neural network model is trained, and the parameters and weights of the second neural network model are obtained; and the second neural network model outputs the size and corresponding position coordinates of the safety area.

[0023] Beneficial effects:

[0024] (1) The operation platform of the present application can be folded and contracted, and is simple and convenient to set up and easy to move.

[0025] (2) The operation platform of the present application is provided with an inclination sensor and an axial force sensor, can obtain the data of the construction worker on the platform plate of the operation platform, can monitor the unsafe behavior of the construction worker out of the line of sight of the safety manager in real time, and plays a role in early warning.

[0026] (3) The early warning system of the present application can alarm the safety risk and suspected operation platform collapse and construction worker falling, and timely upload and notify the manager of the falling construction worker, position, time and other information, and plays a role in after-warning.

[0027] (4) The early warning system of the present application can identify the identity information of the construction worker and record the habitual behavior of the construction worker according to the sensor arranged on the body of the construction worker. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 FIG. 1 is a structural schematic diagram of the foldable early warning operation platform of the present application;

[0029] Figure 2 FIG. 3 is a schematic diagram of the foldable early warning operation platform after folding of the present application;

[0030] Figure 3 FIG. 5 is a schematic diagram of the early warning system of an embodiment of the present application.

[0031] The following describes each number mark:

[0032] 1, first main frame; 2, second main frame; 3, folding assembly; 4, diagonal pull rod; 11, first vertical rod; 12, second vertical rod; 21, third vertical rod; 22, fourth vertical rod; 31, first folding part; 32, second folding part; 33, pin shaft. DETAILED DESCRIPTION

[0033] The application will be described in detail below in combination with the drawings and examples.

[0034] As shown in the drawings, Figure 1 The application proposes a folding early warning operation platform, which comprises two oppositely arranged main frames, a folding assembly 3, a diagonal pull rod 4, an inclination sensor, a shaft force sensor and a platform plate.

[0035] The two main frames are a first main frame 1 and a second main frame 2; each main frame comprises two vertically arranged vertical rods and a plurality of transverse rods fixed transversely between the vertical rods; each transverse rod of the first main frame corresponds to a transverse rod of the second main frame, forming a corresponding group of transverse rods, i.e. a plane formed by two transverse rods is horizontal.

[0036] The two vertical rods of the first main frame 1 are a first vertical rod 11 and a second vertical rod 12; the two vertical rods of the second main frame 2 are a third vertical rod 21 and a fourth vertical rod 22; and the first vertical rod 11 and the third vertical rod 21 are opposite, and the second vertical rod 12 and the fourth vertical rod 22 are opposite; the first main frame 1 and the second main frame 2 are rotatably connected by the folding assembly 3 between the opposite first vertical rod 11 and third vertical rod 21; the folding assembly 3 can be folded, so that the horizontal distance between the first main frame 1 and the second main frame 2 is shortened.

[0037] Any transverse rod of the first main frame 1 is rotatably connected to one end of the diagonal pull rod 4, and any transverse rod of the second main frame 2 is rotatably connected to the other end of the diagonal pull rod 4; and the plane formed by the transverse rods of the first main frame 1 and the second main frame 2 is not horizontal, i.e. the included angle between the diagonal pull rod and the horizontal plane is 0°-90°; the diagonal pull rod is a foldable rod or a telescopic rod, which will not interfere with the movement when the folding assembly 3 is folded to shorten the horizontal distance between the first main frame 1 and the second main frame 2.

[0038] In the first group of corresponding transverse rods of the first main frame and the second main frame, an inclination sensor is embedded in each transverse rod; in the second group of corresponding transverse rods of the first main frame and the second main frame, a shaft force sensor is embedded at the end point of each transverse rod; a horizontal and detachable platform plate is arranged on the first main frame and the second main frame.

[0039] The corresponding transverse rods of the first group and the corresponding transverse rods of the second group can be the same or different.

[0040] The first main frame 1, the second main frame 2, the folding assembly 3 and the inclined rod 4 of the folding early warning operation platform are all made of aluminum alloy.

[0041] The folding assembly is a lateral folding mechanism, which comprises a first folding part 31 and a second folding part 32. One end of the first folding part 31 is rotationally connected with the first vertical rod 11, and one end of the second folding part 32 is rotationally connected with the third vertical rod 21. The other end of the first folding part 31 is pinned with the other end of the second folding part 32 through a vertical pin shaft 33. The horizontal length of the folding assembly after folding is less than the length of the transverse rod. The rotational connection is realized by a folding limiting node fastener.

[0042] The horizontal length of the first folding part 31 and the second folding part 32 is less than the length of the transverse rod. The horizontal distance between the inclined rod 4 and the second vertical rod 12 and the fourth vertical rod 22 is less than half the length of the transverse rod. When the inclined rod is a foldable rod, the position of the inclined rod 4 after folding avoids the central axis of the main frame, so as to avoid forming a weak position with other folding components. The length of the inclined rod 4 after folding is less than the length of the vertical rod. When the inclined rod is not folded, it is locked as a straight rod by a locking mechanism.

[0043] The folding early warning operation platform after folding is shown in Figure 2 The folding assembly 3 and the inclined rod 4 of the folding early warning operation platform are clamped in the space formed by the first main frame 1 and the second main frame 2 after folding. The remaining part of the space formed by the first main frame 1 and the second main frame 2 is used to place the platform plate after folding. The platform plate is used for the construction personnel to step on.

[0044] The inclination sensor is used to detect the inclination angle of the folding early warning operation platform relative to the horizontal plane, and the axial force sensor is used to detect the force value data borne by the folding early warning operation platform.

[0045] The early warning system comprises the folding early warning operation platform, a computing module, a control module, a database, a monitoring module, a sensor configured in a personal terminal of a construction personnel and an alarm module. The sensor in the personal terminal of the construction personnel comprises a position sensor and an acceleration sensor.

[0046] The computing module acquires the real-time position of the construction personnel sensed by the sensor in the personal terminal of the construction personnel and the corresponding personnel code, acquires the weight of the construction personnel according to the personnel code, acquires the inclination angle of the foldable early warning operation platform relative to the horizontal plane and the force value data borne by the foldable early warning operation platform, determines a safety area based on the real-time position of the construction personnel, the weight of the construction personnel, the inclination angle of the foldable early warning operation platform relative to the horizontal plane, the force value data borne by the foldable early warning operation platform and a preset safety rule, and the safety area is a sub-area of the platform plate. The control module sets an electronic fence in the platform plate based on the safety area. When the real-time position of the construction personnel exceeds the safety area and the acceleration detected by the acceleration sensor does not exceed a preset threshold, the alarm module issues a falling early warning to the construction personnel; when the real-time position of the construction personnel exceeds the safety area and the acceleration detected by the acceleration sensor exceeds a first preset threshold, the alarm module issues a falling alarm to a safety administrator. Further, when the duration of the falling alarm exceeds a second preset threshold, the personnel information of the construction personnel is stored into the database. The monitoring module provides the safety administrator with the personnel information, behavior information of the construction personnel, the state and loss of the foldable early warning operation platform.

[0047] In the embodiment, the safety area is dynamically variable, and the area range and coordinates thereof change according to the real-time position, weight of the construction personnel, inclination angle of the foldable early warning operation platform relative to the horizontal plane, force value data borne by the foldable early warning operation platform and a preset safety rule. The real-time position of the construction personnel, weight of the construction personnel, inclination angle of the foldable early warning operation platform relative to the horizontal plane and force value data borne by the foldable early warning operation platform are input into the first neural network model which is trained in advance, and the first neural network model outputs the force distribution of each sub-area of the operation platform, for example, the force distribution of each of the eight sub-areas adds up to 1. The real-time position of the construction personnel, weight of the construction personnel, inclination angle of the foldable early warning operation platform relative to the horizontal plane, force value data borne by the foldable early warning operation platform, output of the first neural network model and preset safety rule are input into a second neural network model, the model structure of the second neural network model is the same as that of the first neural network model, the parameters and weights of the first neural network model are migrated as the initial parameters and initial weights of the second neural network model, and the migrated parameters and weights are exponentially corrected when the second neural network model is trained, to obtain the parameters and weights of the second neural model. The second neural network model outputs the size and corresponding position coordinates of the safety area.

[0048] Further, the first neural network model is a CNN network model or a neural network model with an attention mechanism.

[0049] In this embodiment, the state and loss of the folding early warning operation platform are obtained by inputting the personnel information and behavior information of the construction personnel into a third neural network model that has been pre-trained.

[0050] An embodiment of the early warning system is provided below.

[0051] The personal terminal is a miniature personal terminal with a position sensor and an acceleration sensor, which can be built into various construction personnel equipment such as safety helmets or reflective vests. Its working process is as follows:

[0052] 1. A positioning module is arranged at the top of the vertical rod as a coordinate reference point and a safe working coordinate range (electronic fence).

[0053] 2. When the construction personnel climb onto the platform, the personnel terminal is identified to enter the safe working coordinate range, and the personnel identity information and real-time position relative to the coordinate reference point are recorded.

[0054] 3. Fall early warning: When the personnel terminal exceeds the identification area of the safe working range of the frame body, the terminal will issue a beeping early warning to remind the construction personnel to pay attention to safety.

[0055] 4. Fall alarm: When the position sensor in the personnel terminal exceeds the safe working area of the "electronic fence" and the acceleration sensor detects a large acceleration, the terminal will issue an alarm. When the false alarm shutdown time is exceeded without manual shutdown, it is considered that the personnel have fallen, and the identity data is uploaded to the monitoring end and real-time alarm is given to the construction management personnel.

[0056] In this embodiment, by analyzing the sensor parameters of the operation platform in different working states, an artificial neural network model is established. When the operation platform test data is uploaded to the low-altitude operation platform intelligent safety monitoring and early warning system, the working position of the construction personnel on the construction surface and the load bearing of the frame body can be displayed in real time.

[0057] By correcting the neural network model, the early warning error is reduced to establish a low-altitude operation platform intelligent safety monitoring and early warning system for real-time risk identification and risk early warning, so that it can complete the functions of construction personnel matching, real-time monitoring of various data of platform key nodes in the construction process, and prediction of unsafe state risks, and dynamically update in the low-altitude operation platform real-time early warning system.

[0058] The present application solves the problems of low-altitude operation platform state monitoring and personnel safety warning by using neural network and structure monitoring technology. A folding operation platform with exquisite structure is proposed for the platform structure, and various sensors are used in combination with neural network technology for the safety of the frame body, and personnel identity recognition, fall safety prompt and alarm are achieved for personnel safety, thereby improving the safety protection of personnel and construction tools.

[0059] In the present application, the shaft force sensor, the inclination sensor, the acceleration sensor and the displacement sensor are used for intelligent safety monitoring of the operation platform, and the sensor data is processed in different ways according to specific needs. According to the actual safety monitoring needs, the main goal of the present application is to monitor the construction area and construction quality on the low-altitude operation platform during construction. By analyzing the sensor parameters of the low-altitude operation platform in different working states, an artificial neural network model is established to achieve the purpose of reducing the accident rate.

[0060] By correcting the neural network model, the warning error is reduced to establish a real-time risk identification and risk warning intelligent safety monitoring and warning system for the low-altitude operation platform, so that it can complete the functions of construction personnel matching, real-time monitoring of various data of platform key nodes in the construction process, and unsafe state risk prediction, and dynamically update in the real-time warning system of the low-altitude operation platform.

[0061] To ensure real-time monitoring of the safety state of the operation platform, after the artificial neural network prediction model is built, an edge computing module is built by connecting the single-chip microcomputer and the data acquisition system, and when the module predicts that the sensor data meets the warning value, the corresponding construction safety reminder is given to the construction personnel, and the feedback is recorded in the low-altitude operation platform warning system to provide more effective means for safety management personnel on-site safety management.

[0062] After the present application is popularized and applied in enterprises and industries, it replaces the current various low-altitude operation frames which are messy, inefficient and have low safety factor, and helps the orderly development of low-altitude construction work and the improvement of the cleanliness of the construction site environment. The recyclable low-altitude operation platform replaces the temporary frame made of scattered wooden boards, which can reduce material loss during repeated use and effectively reduce carbon emissions in the construction process.

[0063] The above specific embodiments only describe the design principles of the present application, and the shapes and names of the components in the description can be different and are not limited. Therefore, those skilled in the art of the present application can modify or equivalently replace the technical solutions described in the foregoing embodiments, and these modifications and replacements do not deviate from the purpose and technical solutions of the present application, and should all belong to the protection scope of the present application.

Claims

1. An early warning system, characterized in that, The early warning system includes a foldable early warning operation platform equipped with sensors; the platform includes: Two main frames are arranged opposite each other, namely the first main frame (1) and the second main frame (2). Each main frame includes two vertically arranged vertical bars and several horizontal bars fixed between the vertical bars. A folding assembly (3) is rotatably connected between two vertical rods opposite to the first main frame (1) and the second main frame (2). The folding assembly (3) can be folded, so that the horizontal distance between the first main frame (1) and the second main frame (2) becomes smaller. The diagonal brace (4) is rotatably connected between the first main frame (1) and the second main frame (2), and the angle between the diagonal brace and the horizontal plane is 0° to 90°; the diagonal brace (4) is a foldable rod or a telescopic rod; In the first set of corresponding transverse bars of the first main frame (1) and the second main frame (2), each transverse bar is embedded with an inclination sensor; in the second set of corresponding transverse bars of the first main frame (1) and the second main frame (2), each transverse bar is embedded with an axial force sensor at its end point; and a horizontal, detachable platform plate is provided on the first main frame and the second main frame. The early warning system also includes: The system includes a computing module, a control module, a database, a monitoring module, and sensors and alarm modules configured in the personal terminals of construction workers. The sensors in the personal terminal of the construction worker include a position sensor and an acceleration sensor; The calculation module acquires the real-time location and corresponding personnel code of the construction worker as sensed by the sensors in the construction worker's personal terminal, and obtains the weight of the construction worker based on the personnel code; it also acquires the tilt angle of the foldable early warning operation platform relative to the horizontal plane and the force value data borne by the foldable early warning operation platform; based on the real-time location of the construction worker, the weight of the construction worker, the tilt angle of the foldable early warning operation platform relative to the horizontal plane, the force value data borne by the foldable early warning operation platform, and preset safety rules, a safety area is determined, and the safety area is a sub-region of the platform plate; The control module sets up an electronic fence on the platform based on the safety zone; when the construction worker's real-time position exceeds the safety zone and the acceleration detected by the accelerometer does not exceed a preset threshold, the alarm module issues a fall warning to the construction worker; when the construction worker's real-time position exceeds the safety zone and the acceleration detected by the accelerometer exceeds a first preset threshold, the alarm module issues a fall alarm to the safety administrator; when the duration of the fall alarm exceeds a second preset threshold, the personnel information of the construction worker is stored in the database; the monitoring module provides the safety administrator with the personnel information, behavior information, status and wear and tear of the foldable early warning operation platform of the construction worker.

2. The early warning system as described in claim 1, characterized in that, The two vertical rods of the first main frame (1) are the first vertical rod (11) and the second vertical rod (12); the two vertical rods of the second main frame (2) are the third vertical rod (21) and the fourth vertical rod (22); and the first vertical rod (11) and the third vertical rod (21) are opposite to each other, and the second vertical rod (12) and the fourth vertical rod (22) are opposite to each other; The folding assembly is a side-folding mechanism, including a first folding part (31) and a second folding part (32). One end of the first folding part (31) is rotatably connected to a first vertical rod (11), and one end of the second folding part (32) is rotatably connected to a third vertical rod (21). The other end of the first folding part (31) and the other end of the second folding part (32) are connected by a vertical pin (33). The horizontal length of the folding assembly after folding is less than the length of the horizontal rod.

3. The early warning system as described in claim 2, characterized in that, The horizontal lengths of the first folding part (31) and the second folding part (32) are both less than the length of the transverse rod; the horizontal distances between the diagonal tie rod (4) and the second vertical rod (12) and the fourth vertical rod (22) are both less than half the length of the transverse rod.

4. The early warning system as described in any one of claims 1-3, characterized in that, When the diagonal tie rod is a foldable rod, the length of the diagonal tie rod (4) after folding is less than the length of the vertical rod, and when the diagonal tie rod is not folded, it is locked as a straight rod by the locking mechanism.

5. The early warning system as described in any one of claims 1-3, characterized in that, Each transverse bar of the first main frame (1) corresponds to a transverse bar of the second main frame (2), forming a set of corresponding transverse bars. The set of corresponding transverse bars refers to the horizontal plane formed by the two transverse bars. Any transverse bar of the first main frame (1) is rotatably connected to one end of the diagonal brace (4), and any transverse bar of the second main frame (2) is rotatably connected to the other end of the diagonal brace (4). The plane formed by the transverse bars on the first main frame (1) and the transverse bars on the second main frame (2) is not horizontal.

6. The early warning system as described in any one of claims 1-3, characterized in that, The tilt sensor is used to detect the tilt angle of the foldable early warning operation platform relative to the horizontal plane, and the axial force sensor is used to detect the force data borne by the foldable early warning operation platform.

7. The early warning system as described in claim 1, characterized in that, The real-time location of the construction worker, the weight of the construction worker, the tilt angle of the foldable early warning operation platform relative to the horizontal plane, and the force data borne by the foldable early warning operation platform are input into a pre-trained first neural network model. The first neural network model outputs the force distribution of each sub-region of the operation platform, and the sum of the corresponding values ​​of the force distribution of each sub-region is 1. The real-time location of the construction worker, the weight of the construction worker, the tilt angle of the foldable early warning operation platform relative to the horizontal plane, the force data borne by the foldable early warning operation platform, the output of the first neural network model, and the preset safety rules are input into a second neural network model. The model structure of the second neural network model is the same as that of the first neural network model. The parameters and weights of the first neural network model are transferred as the initial parameters and initial weights of the second neural network model. When training the second neural network model, the transferred parameters and weights are exponentially corrected to obtain the parameters and weights of the second neural network model. The second neural network model outputs the size of the safe area and its corresponding position coordinates.

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