Building engineering construction safety intelligent management and control communication system

Abstract

The application belongs to the technical field of building construction safety monitoring, and specifically discloses a building engineering construction safety intelligent management and control communication system, which comprises the following steps: converting a scaffold into a sensing medium by using a broadband radio frequency coupling technology, establishing an impedance topology map and dividing an impedance smooth area, extracting an environmental parameter to generate an environmental compensation factor, dynamically correcting an impedance judgment threshold, monitoring a terminal load loop impedance change rate to determine illegal disassembly of a protective fence and generate an abnormal signal. Meanwhile, the system receives a safety helmet near-field signal to lock a target area, injects a sweep frequency detection pulse to extract a sudden change reflection peak to determine a physical disconnection point coordinate when a structure is abnormal, finally, comprehensively evaluates a dangerous area weight by combining the breakpoint coordinate and a personnel identity identification on-off state, generates a multi-dimensional linkage alarm instruction, and realizes linkage monitoring and alarm of a structure abnormality and a personnel state.

Description

Technical Field

[0001] The present invention belongs to the technical field of construction safety monitoring, and relates to an intelligent control and communication system for construction safety based on building engineering construction. Background Art

[0002] An intelligent control and communication system for construction safety based on building engineering construction is an integrated defense network for monitoring hazard sources at the construction site and sending warning signals to management personnel or on-site operators. This system generally covers front-end sensing devices, data transmission links, and a background alarm control terminal, and focuses on real-time monitoring of the structural stability of the scaffolding relied on during high-altitude operations and the integrity of the edge protection facilities, in order to prevent personnel from falling and structural collapse accidents.

[0003] The technical solutions adopted in the prior art usually involve hanging stress gauges or inclination sensors on the key stress-bearing nodes of the scaffolding, and using independently laid cables or external wireless transmission modules to send the collected mechanical data to the control center, triggering an audible and visual alarm when the value exceeds the preset safety range. For the safety management of on-site construction personnel, it mostly relies on installing an independent satellite positioning module or Bluetooth beacon on the safety helmet, and estimating the approximate position of personnel through receiving base stations erected around the site.

[0004] The prior art solutions have technical defects such as cumbersome wiring of external sensors and being easily physically damaged during construction operations. The independent node-based monitoring method cannot achieve comprehensive coverage and perception of the overall structure of the scaffolding and continuous guardrails. The existing alarm mechanism separates the structural state monitoring from the personnel position tracking. In case of sudden dangerous situations such as illegal disassembly of guardrails or accidental falling of personnel, it is difficult for the system to quickly establish the causal relationship between the structural fracture point and the disappearance of the personnel state, resulting in a single-dimensional and delayed alarm message output, which cannot meet the instantaneity requirements of multi-dimensional linkage alarms in complex construction environments.

[0005] To solve the above problems, the present invention provides an intelligent control and communication system for construction safety based on building engineering construction. By using broadband radio frequency coupling technology to transform the scaffolding into a sensing medium, combined with impedance dynamic monitoring and multi-path normalization positioning algorithms, it can achieve the linkage monitoring and multi-dimensional alarm of structural anomalies and personnel states. Summary of the Invention

[0006] In order to overcome the above defects of the prior art and achieve the above object, the present invention proposes the following technical solution: An intelligent control and communication system for construction safety based on building engineering construction, comprising: a topology map establishment module, which drives a broadband radio frequency coupling fixture to inject radio frequency signals into the main vertical poles of the building scaffolding, scans the initial standing wave ratio distribution of the building scaffolding framework, and establishes an impedance spatial position reference topology map.

[0007] The impedance smoothing zone division module installs adaptive sleeve-type impedance matching rings at key branch nodes of the building scaffold, adjusts the equivalent reactance of the adaptive sleeve-type impedance matching rings, and divides the building scaffold into multiple impedance smoothing zones based on the impedance spatial location reference topology map.

[0008] The threshold generation module extracts environmental parameters from the impedance smoothing region to generate an environmental compensation factor. The environmental compensation factor is then used to correct the reference impedance threshold in the impedance spatial location reference topology map to obtain the real-time impedance judgment threshold.

[0009] The structural anomaly monitoring module acquires the impedance change rate of the end load circuit generated by the impedance smoothing zone of the edge protection railing. When the impedance change rate of the end load circuit exceeds the real-time impedance judgment threshold, it determines that the edge protection railing has been illegally dismantled and generates a structural anomaly signal.

[0010] The target area locking module receives the near-field signal carrying the identification mark emitted by the safety helmet when the physical logic switch is closed. It uses a multipath normalization algorithm combined with the feedback signal strength of the impedance smoothing region to lock the target impedance smoothing region corresponding to the near-field signal.

[0011] The breakpoint coordinate determination module, upon receiving a structural anomaly signal, injects a frequency sweep probe pulse into the target impedance smoothing region to obtain a real-time echo spectrum. It then performs differential operations on the real-time echo spectrum and the impedance spatial location reference topology spectrum to extract abrupt reflection peaks and calculates the time difference of the abrupt reflection peaks to determine the coordinates of the physical breakpoint.

[0012] The linkage alarm execution module integrates the coordinates of the physical disconnection point with the on / off status of the identification mark within the target impedance smoothing zone to generate multi-dimensional linkage alarm commands and execute the alarm.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The present invention converts the broadband radio frequency excitation signal into surface wave energy and injects it into the main upright of the building scaffold. Combined with the adaptive sleeve impedance matching ring to dynamically adjust the equivalent reactance, the scaffold frame is transformed into a transmission medium with sensing capabilities. The impedance change rate of the end load circuit is monitored in real time. When the edge guardrail is illegally dismantled, a structural abnormality signal is generated in time and an alarm mechanism is triggered, which improves the timeliness and accuracy of the status monitoring of the protective facilities at the construction site.

[0014] (2) This invention collects humidity data, temperature data and estimated value of oxide layer of metal pipe wall in impedance smoothing zone as environmental parameters, constructs multivariate joint compensation function to generate environmental compensation factor, dynamically corrects the reference impedance threshold to obtain real-time impedance judgment threshold, eliminates the interference caused by temperature and humidity changes and metal aging in complex construction environment on impedance monitoring, ensures the reliability of abnormal judgment boundary conditions, and reduces the false alarm rate of alarm system.

[0015] (3) This invention utilizes the mechanical series circuit closure of the safety helmet to activate the radio frequency chip to transmit near-field signals, combines the multipath normalization algorithm to lock the target impedance smoothing region, and injects a sweep frequency detection pulse to obtain the real-time echo spectrum when receiving the structural abnormality signal. The physical disconnection point coordinates are determined by extracting the abrupt reflection peak through differential operation, and multi-dimensional linkage alarm instructions are generated by combining the physical disconnection point coordinates with the on / off status of the identity tag. This realizes the deep correlation analysis between personnel status and structural abnormality, and provides accurate positioning data and multi-dimensional alarm information for the safety management and emergency response of the construction site. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the system module connections of the present invention. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figure 1 As shown, the intelligent management and communication system for construction safety proposed in this invention includes: a topology map establishment module, an impedance smoothing zone division module, a judgment threshold generation module, a structural anomaly monitoring module, a target area locking module, a breakpoint coordinate determination module, and a linkage alarm execution module.

[0020] The topology mapping module drives a broadband radio frequency coupling fixture to inject radio frequency signals into the main uprights of the building scaffold, scans the initial standing wave ratio distribution of the building scaffold frame, and establishes an impedance spatial location reference topology map.

[0021] In a preferred embodiment, driving a broadband radio frequency coupling fixture to inject radio frequency signals into the main uprights of the building scaffold, scanning the initial standing wave ratio distribution of the building scaffold skeleton, and establishing an impedance spatial position reference topology map includes: controlling a communication gateway to generate a broadband radio frequency excitation signal and transmitting the broadband radio frequency excitation signal to the broadband radio frequency coupling fixture.

[0022] The broadband radio frequency coupling fixture is driven to convert the broadband radio frequency excitation signal into surface wave energy, and then inject the surface wave energy into the main upright of the building scaffold.

[0023] Under standard installation conditions, the initial standing wave ratio distribution generated by the surface wave energy received by the building scaffold frame is scanned, and the initial standing wave ratio distribution is mapped to the spatial position of the building scaffold to establish an impedance spatial position reference topology map.

[0024] Specifically, the communication gateway generates a broadband radio frequency (RF) excitation signal, which is then transmitted to the broadband RF coupling fixture. The communication gateway, acting as the control center responsible for generating electromagnetic wave signals and transmitting data, has an internal signal generation circuit that produces an initial electromagnetic wave signal containing multiple frequency components—the broadband RF excitation signal. This signal is transmitted to the broadband RF coupling fixture via a coaxial cable. The broadband RF coupling fixture, a physical device for converting electrical signals into energy propagating along the surface of a metal rod, is driven to convert the broadband RF excitation signal into surface wave energy. Surface wave energy refers to electromagnetic energy propagating along the surface of a metal conductor. The impedance transformation circuit inside the broadband RF coupling fixture converts the power of the broadband RF excitation signal into the power of the surface wave energy, and the conversion relationship satisfies the formula: In the formula, The power, representing the surface wave energy, is measured in watts and is set based on measured data from the power meter at the output of the broadband RF coupling fixture. Represents conversion efficiency, dimensionless, and is set based on data from 50 laboratory impedance matching tests. This represents the power of the broadband radio frequency excitation signal, measured in watts, and is based on the rated output power setting of the communication gateway transmitter.

[0025] A broadband RF coupling fixture injects surface wave energy into the main uprights of a building scaffold. The main uprights, as vertical metal tubes supporting the scaffold structure, serve as the transmission medium for surface wave energy. The initial standing wave ratio (SWR) distribution generated by the surface wave energy received by the scaffold frame is scanned under standard installation conditions. Standard installation conditions refer to the ideal state where all scaffold components are tightly connected according to specifications and free from rust and deposits. The building scaffold frame is an integral metal frame composed of main uprights and horizontal members. The initial SWR distribution is the set of voltage standing wave ratios formed by the superposition of reflected and incident waves when surface waves propagate within the scaffold frame, at different locations, under conditions of no external interference. The calculation of the initial SWR distribution depends on the reflection coefficient, and their relationship satisfies the formula: In the formula, Represents the reflection coefficient, which is dimensionless and is set based on the measured data of the voltage ratio of the reflected wave to the incident wave at each node of the building scaffold frame. The actual load impedance of the building scaffolding frame node is represented by ohms and is set based on measured data from a high-frequency impedance analyzer under standard installation conditions. The characteristic impedance representing the propagation of surface wave energy in the main uprights of a building scaffold is expressed in ohms and is set based on electromagnetic calculations of the metal pipe diameter and material.

[0026] The voltage standing wave ratio (VSWR) value in the initial VSWR distribution is calculated based on the reflection coefficient, and the relationship satisfies the formula: In the formula, Represents the voltage standing wave ratio (VSWR) value, dimensionless, and calculated based on the absolute value of the reflection coefficient.

[0027] The initial standing wave ratio (SWR) distribution is mapped to the spatial location of the building scaffolding to establish an impedance spatial location benchmark topology map. The spatial location of the building scaffolding refers to the coordinates of each node in three-dimensional space. The impedance spatial location benchmark topology map is a mapping diagram recording the spatial coordinates of each scaffolding node and its corresponding standard impedance value. During system initialization, scaffolding BIM (Building Information Modeling) data with three-dimensional coordinate labels is manually entered. The communication gateway matches and maps the node sequence of the initial SWR distribution with the BIM node coordinates according to the physical connection order of the nodes. The mapping process satisfies the formula: In the formula, The dimensionless value represents the mapping function value of the impedance spatial location reference topology at a spatial coordinate point, which is set based on the correspondence between spatial coordinates and voltage standing wave ratio (VSWR) values. The horizontal coordinates representing spatial location, in meters, are set based on pre-imported BIM model data combined with actual measurement data from a laser rangefinder. The vertical coordinate representing the spatial location, in meters, is set based on actual measurement data from a laser rangefinder. The vertical coordinates representing spatial location are in meters and are set based on actual measurement data from a laser rangefinder. This represents the voltage standing wave ratio (VSWR) at the corresponding spatial coordinate point. It is dimensionless and is set based on the calculation results of the initial VSWR distribution.

[0028] For example, a control communication gateway generates a broadband radio frequency (RF) excitation signal and transmits it to a broadband RF coupling fixture. The fixture is then driven to convert the RF excitation signal into surface wave energy. The power of the RF excitation signal is set to 10 watts, the conversion efficiency to 0.8, and the calculated power of the surface wave energy is 8 watts. This surface wave energy is injected into the main uprights of the building scaffold. Under standard installation conditions, the initial standing wave ratio (SWR) distribution generated by the surface wave energy received by the building scaffold frame is scanned. The actual load impedance of the building scaffold frame nodes is set to 75 ohms, and the characteristic impedance to 50 ohms, resulting in a calculated reflection coefficient of 0.2. Further calculation yields a voltage standing wave ratio (VSWR) of 1.5. The initial VSWR distribution is mapped to the spatial position of the building scaffold. The horizontal coordinate of the spatial position is set to 2 meters, the vertical coordinate to 3 meters, and the horizontal coordinate to 4 meters. This coordinate point is mapped to the VSWR value of 1.5, establishing a baseline topology map of the impedance spatial position. The above data directly verifies the effectiveness of the process of converting broadband radio frequency excitation signals into surface wave energy and establishing impedance spatial location reference topology maps.

[0029] The impedance smoothing zone division module installs adaptive sleeve-type impedance matching rings at key branch nodes of the building scaffold, adjusts the equivalent reactance of the adaptive sleeve-type impedance matching rings, and divides the building scaffold into multiple impedance smoothing zones according to the impedance spatial location reference topology map.

[0030] In a preferred embodiment, an adaptive sleeve-type impedance matching ring is installed at the critical branch node of the building scaffold, the equivalent reactance of the adaptive sleeve-type impedance matching ring is adjusted, and the building scaffold is divided into multiple impedance smoothing zones according to the impedance spatial location reference topology map, including: identifying the intersection of the longitudinal main trunk and the transverse horizontal bar of the building scaffold, and determining the intersection as the critical branch node.

[0031] An adaptive sleeve-type impedance matching ring is configured at the critical branch node, and the equivalent reactance of the adaptive sleeve-type impedance matching ring is dynamically adjusted through the communication gateway.

[0032] The surface wave transmission attenuation value is monitored during the equivalent reactance adjustment process. The upper limit of surface wave transmission attenuation that meets the communication quality requirements is obtained as the attenuation judgment threshold. When the surface wave transmission attenuation value is lower than the attenuation judgment threshold, the building scaffold is divided into multiple impedance smoothing zones according to the impedance spatial location reference topology map.

[0033] Specifically, identify the intersection points of the longitudinal main beams and transverse horizontal beams of the building scaffold. The longitudinal main beams of the building scaffold refer to the metal uprights perpendicular to the ground that bear the main load. The transverse horizontal beams refer to the metal horizontal beams parallel to the ground that connect the longitudinal main beams. The intersection points are designated as critical branching nodes. Critical branching nodes are physical connection points where surface wave energy branches and reflects during transmission. Adaptive sleeve-type impedance matching rings are configured at the critical branching nodes. An adaptive sleeve-type impedance matching ring is a ring-shaped device that wraps around the node and can dynamically change its electromagnetic parameters. The equivalent reactance of the adaptive sleeve-type impedance matching ring is dynamically adjusted through a communication gateway. The equivalent reactance is the reactance value of the matching ring at a specific frequency that impedes the passage of alternating current. The adjustment process relies on changing the capacitance value of the internal varactor diode, and the relationship satisfies the formula: In the formula, Represents the equivalent reactance, measured in ohms, and is set based on the measured control voltage output from the communication gateway. The intrinsic inductance of the adaptive sleeve impedance matching ring is expressed in ohms and is set based on theoretical calculations of the number of turns and geometric dimensions of the matching ring coil. The frequency representing the surface wave energy is measured in Hertz and is set based on the center frequency of the broadband radio frequency excitation signal. This represents the capacitance value of the varactor diode, measured in farads, and is set based on measured data from the characteristic curve of bias voltage versus capacitance.

[0034] Monitor the surface wave transmission attenuation value during the equivalent reactance adjustment process. The surface wave transmission attenuation value refers to the degree of power reduction of the surface wave energy after passing through a critical branch node. This value is calculated according to the formula: In the formula, This represents the surface wave transmission attenuation value, measured in decibels, and is calculated based on the ratio of input to output power. The power representing the surface wave energy injected in the aforementioned example is measured in watts and is set based on measured data from the power meter at the output of the broadband RF coupling fixture. This represents the output power after passing through the critical branching node, measured in watts, and is set based on measured data from the receiving antenna behind the node.

[0035] The upper limit of surface wave transmission attenuation that meets communication quality requirements is obtained as the attenuation judgment threshold. The attenuation judgment threshold is the upper limit of the allowable attenuation to ensure that the surface wave signal can be effectively demodulated. When the surface wave transmission attenuation value is lower than the attenuation judgment threshold, the construction scaffold is divided into multiple impedance smoothing zones according to the impedance spatial location reference topology map. The impedance smoothing zone refers to a continuous physical region where the internal impedance change rate is lower than the preset reference and the surface wave transmission attenuation value is constant. The division process is based on the gradient of the voltage standing wave ratio (VSWR) value in the impedance spatial location reference topology map to determine the boundaries.

[0036] For example, the intersection of the longitudinal main beams and transverse horizontal beams of a building scaffold is identified, and this intersection is designated as a critical branch node. An adaptive sleeve-type impedance matching ring is configured at the critical branch node, and its equivalent reactance is dynamically adjusted via a communication gateway. The inherent inductance of the adaptive sleeve-type impedance matching ring is set to 100 ohms, the frequency of the surface wave energy is approximately 15.92 MHz, and the capacitance of the varactor diode is 0.25 nanofarads, resulting in a calculated equivalent reactance of 60 ohms. The surface wave transmission attenuation during the equivalent reactance adjustment process is monitored. The injected surface wave energy power is set to 8 watts, and the output power after passing through the critical branch node is set to 4 watts, resulting in a calculated surface wave transmission attenuation of 3.01 dB. The upper limit of surface wave transmission attenuation that meets communication quality requirements is obtained as the attenuation judgment threshold. The attenuation judgment threshold is set to 5 dB. When the surface wave transmission attenuation of 3.01 dB is lower than the attenuation threshold of 5 dB, the building scaffold is divided into multiple impedance smoothing zones based on the impedance spatial location reference topology map. The above data directly verifies the effectiveness of adjusting the equivalent reactance of the adaptive sleeve-type impedance matching ring and the process of dividing the impedance smoothing zones.

[0037] The threshold generation module extracts environmental parameters of the impedance smoothing region to generate an environmental compensation factor, and uses the environmental compensation factor to correct the reference impedance threshold in the impedance spatial location reference topology map to obtain the real-time impedance determination threshold.

[0038] In a preferred embodiment, environmental parameters of the impedance smoothing region are extracted to generate an environmental compensation factor. The environmental compensation factor is used to correct the reference impedance threshold in the impedance spatial location reference topology map to obtain the real-time impedance judgment threshold. This includes: collecting humidity data, temperature data and oxide layer estimates of the metal pipe wall in the impedance smoothing region in real time through a communication gateway, and combining the humidity data, temperature data and oxide layer estimates into environmental parameters.

[0039] A multivariate joint compensation function reflecting the relationship between environmental factors and impedance drift is constructed. Environmental parameters are input into the multivariate joint compensation function for calculation, generating an environmental compensation factor to characterize the degree of environmental noise interference.

[0040] The reference impedance threshold is extracted from the reference topology map of impedance spatial location, and the reference impedance threshold is dynamically corrected using an environmental compensation factor to obtain the real-time impedance judgment threshold.

[0041] Specifically, humidity data, temperature data, and estimated oxide layer values ​​of the metal pipe wall are collected in real time within the impedance smoothing zone via a communication gateway. The communication gateway acts as a data aggregation node, receiving measurement information from sensor nodes distributed throughout the impedance smoothing zone. Humidity data refers to the percentage of moisture content in the air within the impedance smoothing zone. Temperature data refers to the temperature of the air within the impedance smoothing zone. The estimated oxide layer value refers to the thickness of the non-conductive layer formed on the surface of the metal pipe wall due to oxidation. The humidity data, temperature data, and estimated oxide layer value are combined to form environmental parameters. These environmental parameters are a multi-dimensional data set composed of the above three physical quantities, used to comprehensively describe the current physical environmental state of the impedance smoothing zone.

[0042] A multivariate joint compensation function reflecting the relationship between environmental factors and impedance drift is constructed. The multivariate joint compensation function is a mathematical model describing the nonlinear drift of the surface wave transmission impedance of a metallic conductor caused by changes in environmental parameters. Environmental parameters are input into the multivariate joint compensation function for calculation, generating an environmental compensation factor to characterize the degree of environmental noise interference. The environmental compensation factor is a dimensionless coefficient reflecting the degree to which the current environment deviates from the standard environment. The calculation relationship of the multivariate joint compensation function satisfies the following formula: In the formula, Represents the environmental compensation factor, which is dimensionless and is set based on the calculation results of a multivariate joint compensation function. Represents the temperature coefficient, measured in fractions of a degree Celsius, and is set based on measured data of the resistance-temperature characteristics of metallic materials. Represents temperature data in degrees Celsius, based on measured data from a temperature sensor within the impedance smoothing region. This represents the reference temperature, in degrees Celsius, based on the ambient temperature setting under standard installation conditions. Represents the humidity coefficient, which is dimensionless and is set based on measured data of surface wave transmission attenuation in air with different humidity levels. Represents humidity data, dimensionless, based on measured data from a humidity sensor within the impedance smoothing region. Represents reference humidity, dimensionless, based on the ambient humidity setting under standard installation conditions. The oxide layer coefficient is represented by a unit of one micrometer, and is set based on measured data of the degree of oxidation of the metal tube wall and the increase in surface wave impedance. The estimated value of the oxide layer, in micrometers, is based on theoretical calculations of the metal pipe wall's service life and environmental corrosion rate. The communication gateway's built-in memory stores a table of the scaffolding's manufacturing date and the material's baseline environmental corrosion rate. The communication gateway calculates the metal pipe wall's service life by reading the system's current clock, then looks up the table and calculates the estimated oxide layer value.

[0043] Extract the reference impedance threshold from the impedance spatial location reference topology map. The reference impedance threshold is the upper limit of allowable impedance fluctuation under standard conditions set in the impedance spatial location reference topology map. Dynamically correct the reference impedance threshold using an environmental compensation factor to obtain the real-time impedance judgment threshold. The real-time impedance judgment threshold is the upper limit of allowable impedance fluctuation under the current environment after correction by the environmental compensation factor. The dynamic correction process satisfies the formula: In the formula, This represents the real-time impedance determination threshold, measured in ohms, and is calculated based on the product of the reference impedance threshold and the environmental compensation factor. Represents the reference impedance threshold, in ohms, and is set based on the standard impedance fluctuation range of each node in the impedance spatial location reference topology map.

[0044] For example, humidity data, temperature data, and estimated oxide layer values ​​of the metal pipe wall are collected in real time within the impedance smoothing zone via a communication gateway. These data are then combined to form environmental parameters. A multivariate joint compensation function reflecting the relationship between environmental factors and impedance drift is constructed. The environmental parameters are input into this function for calculation, generating an environmental compensation factor characterizing the degree of environmental noise interference. The temperature coefficient is set to 1 / 0.004 degrees Celsius, the temperature data is 35 degrees Celsius, and the reference temperature is 25 degrees Celsius. The humidity coefficient is set to 0.5, the humidity data is 0.8, and the reference humidity is 0.5. The oxide layer coefficient is set to 1 / 0.02 micrometers, and the estimated oxide layer value is 5 micrometers. The calculated environmental compensation factor is 1.29. A reference impedance threshold is extracted from the impedance spatial location reference topology map. The environmental compensation factor is used to dynamically correct the reference impedance threshold, resulting in a real-time impedance judgment threshold. The reference impedance threshold is set to 10 ohms, and the calculated real-time impedance judgment threshold is 12.9 ohms. The above data directly verified the effectiveness of the process of generating the environmental compensation factor and obtaining the real-time impedance determination threshold.

[0045] The structural anomaly monitoring module acquires the impedance change rate of the end load circuit generated by the impedance smoothing zone of the edge protection railing. When the impedance change rate of the end load circuit exceeds the real-time impedance judgment threshold, it determines that the edge protection railing has been illegally dismantled and generates a structural anomaly signal.

[0046] In a preferred embodiment, the impedance change rate of the end load circuit generated by the edge protection railing being connected to the impedance smoothing zone is obtained. When the impedance change rate of the end load circuit exceeds the real-time impedance judgment threshold, it is determined that the edge protection railing has been illegally dismantled and a structural abnormality signal is generated. This includes: connecting the edge protection railing to the impedance smoothing zone through an elastic conductive contact to form an end load circuit.

[0047] Real-time monitoring of electrical signal changes in the end-load circuit, and calculation of the impedance change rate of the end-load circuit.

[0048] An environmental noise envelope is constructed using the real-time impedance judgment threshold as a boundary condition. When the rate of change of the end load circuit impedance exceeds the environmental noise envelope in adjacent sampling periods, it is determined that the edge guardrail has been illegally dismantled and a structural abnormality signal is generated.

[0049] Specifically, the edge protection railing is connected to the impedance smoothing zone via flexible conductive contacts. These flexible conductive contacts are metal contact terminals with internal springs, used to maintain a stable current conduction path at the physical connection point. The edge protection railing is a horizontal metal barrier installed on the outer edge of building scaffolding to prevent falls. The connection operation links the edge protection railing to the impedance smoothing zone, forming an end-load circuit. The end-load circuit is a closed electrical path through which surface wave energy flows between the edge protection railing and the impedance smoothing zone.

[0050] Real-time monitoring of electrical signal changes in the end-load circuit. Electrical signal change refers to the fluctuation of the voltage-to-current ratio in the end-load circuit over time. The impedance change rate of the end-load circuit is calculated based on the collected electrical signal data. The impedance change rate of the end-load circuit is the ratio of the absolute amount of impedance change within adjacent sampling periods to the reference impedance, and the calculation relationship satisfies the formula: In the formula, It represents the rate of change of impedance of the end load circuit, is dimensionless, and is set based on impedance calculations at adjacent sampling times. This represents the impedance measurement value of the end load circuit at the current moment, in ohms, based on the real-time sampling data of the high-frequency impedance analyzer. This represents the impedance measurement value of the end load circuit at the previous moment, in ohms, and is set based on historical sampling data from the high-frequency impedance analyzer. The reference impedance, in ohms, represents the end load circuit and is set based on the measured impedance data during the initial installation of the edge protection railing.

[0051] An environmental noise envelope is constructed using a real-time impedance determination threshold as a boundary condition. The environmental noise envelope is a dynamic curve that encloses the impedance fluctuation range caused by normal environmental interference. The constructed relationship satisfies the formula: In the formula, Represents the environmental noise envelope, dimensionless, and is set based on real-time impedance determination threshold conversion. The threshold value represents the real-time impedance determination value generated above, in ohms, and is set based on the environmental compensation factor correction result. Represents the safety margin coefficient, which is dimensionless and is set based on the measured data of mechanical vibration caused by wind load in the field environment.

[0052] When the rate of change of the end load circuit impedance instantaneously exceeds the envelope of the ambient noise, it is determined that the edge protection railing has been illegally dismantled, and a structural anomaly signal is generated. Illegal dismantling refers to the unauthorized act of disconnecting the physical connection of the edge protection railing. The structural anomaly signal is a digital pulse command that triggers subsequent alarm and location procedures.

[0053] For example, the edge protection railing is connected to the impedance smoothing zone via elastic conductive contacts, forming an end-load circuit. The electrical signal changes of the end-load circuit are monitored in real time, and the impedance change rate of the end-load circuit is calculated. The impedance measurement value of the end-load circuit at the current moment is set to 68 ohms, and the impedance measurement value at the previous moment is set to 50 ohms. The reference impedance of the end-load circuit is set to 50 ohms, and the calculated impedance change rate is 0.36. An environmental noise envelope is constructed using the real-time impedance judgment threshold as a boundary condition. The aforementioned real-time impedance judgment threshold is set to 12.9 ohms, and the safety margin factor is set to 0.042, resulting in an environmental noise envelope of 0.3. When the impedance change rate of the end-load circuit (0.36) instantaneously exceeds the environmental noise envelope (0.3), it is determined that the edge protection railing has been illegally dismantled, and a structural anomaly signal is generated. The above data directly verifies the effectiveness of calculating the impedance change rate of the end-load circuit and generating the structural anomaly signal.

[0054] The target area locking module receives the near-field signal carrying the identification mark emitted by the safety helmet when the physical logic switch is closed, and uses a multipath normalization algorithm combined with the feedback signal strength of the impedance smoothing region to lock the target impedance smoothing region corresponding to the near-field signal.

[0055] In a preferred embodiment, a near-field signal carrying an identification mark emitted by the helmet when the physical logic switch is closed is received. The target impedance smoothing region corresponding to the near-field signal is locked by using a multipath normalization algorithm combined with the feedback signal strength of the impedance smoothing region. This includes: detecting the closed state of the mechanical series circuit formed by the helmet's head gravity switch and the chin strap buckle switch, and activating the radio frequency chip when the mechanical series circuit is closed.

[0056] The radio frequency chip is controlled to emit a near-field signal carrying an identification identifier, which is then captured by the pipe wall of the building scaffold to form a feedback surface wave.

[0057] The feedback signal intensity of the surface wave in each impedance smoothing region is extracted, and the feedback signal intensity is processed using a multipath normalization algorithm to lock the target impedance smoothing region corresponding to the near-field signal.

[0058] Specifically, the detection involves checking the closed state of the mechanical series circuit formed by the head gravity switch and the chin strap buckle switch on the safety helmet. The safety helmet is head protection equipment worn by construction workers. The head gravity switch is a mechanical contact built into the top of the helmet and closed under pressure. The chin strap buckle switch is a connecting contact located inside the fastening buckle of the strap. The mechanical series circuit is a current transmission path formed by connecting the head gravity switch and the chin strap buckle switch end-to-end, together constituting a physical logic switch. The physical logic switch is a control component that can only conduct if both head pressure and chin locking are simultaneously met. The closed state refers to the physical state where the mechanical series circuit is connected, allowing current to flow. When the mechanical series circuit is closed, the radio frequency (RF) chip is activated. The RF chip is an integrated circuit responsible for generating and transmitting radio waves.

[0059] The radio frequency (RF) chip emits a near-field signal carrying an identification identifier. This identifier is a unique digital code pre-written into the RF chip to distinguish different construction workers. The near-field signal is a low-power electromagnetic wave radiated by the RF chip over a short distance. This near-field signal is captured by the walls of the scaffolding pipes, forming a feedback surface wave. The scaffolding pipe walls are the outer surface of a cylindrical metal support structure. Upon contact with the scaffolding pipe walls, the near-field signal undergoes electromagnetic coupling, transforming into a feedback surface wave that propagates along the metal surface.

[0060] The feedback signal intensity of the surface wave is extracted in each impedance smoothing region. The feedback signal intensity is the power value of the feedback surface wave captured by the receiver. A multipath normalization algorithm is used to process the feedback signal intensity. The multipath normalization algorithm is a calculation rule that eliminates the superposition error caused by multiple reflections of electromagnetic waves in a complex metal frame and unifies the data scale. The processing satisfies the formula: In the formula, This represents the normalized signal strength after processing. It is dimensionless and is set based on the calculation result of the multipath normalization algorithm. This represents the feedback signal strength, measured in milliwatts, and is set based on measured data from the receiving antenna within the impedance smoothing region. This represents the minimum feedback signal strength in each impedance smoothing region, measured in milliwatts, and is set based on measured data from a global scan. This represents the maximum feedback signal strength in each impedance smoothing region, measured in milliwatts, and is set based on measured data from a global scan. This represents the multipath compensation coefficient, which is dimensionless and set based on measured data of multipath reflection attenuation from pipe walls in building scaffolding. During the system initialization phase, calibration test signals with known power intensities are sent at standard locations in different smooth zones. The received intensities are compared and then fitted to generate the system. The system is periodically recalibrated and updated as the scaffolding erection progresses.

[0061] Locate the target impedance smoothing region corresponding to the near-field signal. The target impedance smoothing region is a specific physical area where the processed normalized signal strength value reaches its peak, representing the actual location of the construction personnel.

[0062] For example, the closed state of the mechanical series circuit formed by the head gravity switch of the safety helmet and the buckle switch on the chin strap is detected. When the mechanical series circuit is closed, the radio frequency chip is activated. The radio frequency chip is controlled to emit a near-field signal carrying an identification mark. The near-field signal is captured by the wall of the scaffolding to form a feedback surface wave. The feedback signal intensity of the feedback surface wave in each impedance smoothing region is extracted, and the feedback signal intensity is processed using a multipath normalization algorithm. The feedback signal intensity is set to 120 milliwatts, the minimum feedback signal intensity in each impedance smoothing region is 20 milliwatts, the maximum feedback signal intensity in each impedance smoothing region is 220 milliwatts, and the multipath compensation coefficient is 1.5. The normalized signal intensity after processing is calculated to be 0.75. Based on the calculated peak value of the normalized signal intensity of 0.75, the target impedance smoothing region corresponding to the near-field signal is locked. The above data directly verifies the effectiveness of using the multipath normalization algorithm to process the feedback signal intensity and lock the target impedance smoothing region.

[0063] The breakpoint coordinate determination module, upon receiving a structural anomaly signal, injects a sweep frequency detection pulse into the target impedance smoothing region to obtain a real-time echo spectrum. It then performs differential operations on the real-time echo spectrum and the impedance spatial location reference topology spectrum to extract abrupt reflection peaks and calculates the time difference of the abrupt reflection peaks to determine the coordinates of the physical breakpoint.

[0064] In a preferred embodiment, upon receiving a structural anomaly signal, a sweep frequency probe pulse is injected into the target impedance smoothing region to obtain a real-time echo spectrum. The real-time echo spectrum is then compared with the impedance spatial location reference topology spectrum to extract abrupt reflection peaks. The time difference between the abrupt reflection peaks is calculated to determine the coordinates of the physical breakpoint. This includes: upon receiving a structural anomaly signal, triggering the communication gateway to inject a sweep frequency probe pulse into the target impedance smoothing region.

[0065] The real-time echo spectrum formed by the reflection of the frequency sweep probe pulse in the target impedance smooth region is obtained by receiving the frequency sweep probe pulse. The real-time echo spectrum is then compared with the impedance spatial position reference topology spectrum by differential operation to eliminate background noise and obtain the differential result.

[0066] Extract the abrupt reflection peak caused by structural fracture from the differential results, calculate the time difference between the abrupt reflection peak and the sweep frequency detection pulse, and determine the coordinates of the physical break point based on the time difference.

[0067] Specifically, upon receiving a structural anomaly signal, the communication gateway is triggered to inject a swept-frequency probe pulse into the target impedance smoothing region. The structural anomaly signal is a digital pulse command generated by the aforementioned structural anomaly monitoring module that triggers the subsequent positioning procedure. The radio frequency transmitting circuit inside the communication gateway is activated and performs a transmission action. The target impedance smoothing region is the specific physical area currently occupied by the construction personnel, locked by the aforementioned target area locking module. The swept-frequency probe pulse is a short electromagnetic wave signal whose frequency changes continuously over time according to a specific pattern, used to detect impedance discontinuities on the transmission path.

[0068] The system receives a real-time echo spectrum formed by the reflection of a swept-frequency probe pulse within the target impedance smooth region. The real-time echo spectrum is a set of amplitude distribution data in the time domain of the signal reflected back from points of impedance discontinuity encountered by the swept-frequency probe pulse. A differential operation is performed between the real-time echo spectrum and the impedance spatial location reference topology map. The impedance spatial location reference topology map is the previously established mapping relationship between the spatial coordinates of each node of the scaffold and its corresponding standard impedance value. The differential operation is a mathematical process of subtracting the amplitude of the currently measured echo signal from the amplitude of the echo signal under the reference state point by point. Background noise is eliminated to obtain the differential result. Background noise is the static reflection signal generated by the inherent structure of the scaffold. The differential result is a set of net reflected signal data after removing the inherent structural reflection interference. The differential operation relationship satisfies the following formula: In the formula, The magnitude of the difference result is represented in millivolts and is calculated based on the absolute value of the subtraction. The time variable representing signal propagation is in seconds and is based on the sampling time setting of the internal clock of the communication gateway. The amplitude of the real-time echo spectrum is represented in millivolts and is set based on measured data from the analog-to-digital conversion of the communication gateway receiving circuit. The reference echo amplitude, in millivolts, represents the conversion of the impedance spatial location reference topology map to the time domain, based on historical stored data under standard installation conditions.

[0069] Extract the abrupt reflection peak caused by structural fracture from the differential results. Structural fracture is the state of physical separation of scaffold members or connectors. The abrupt reflection peak is the local maximum value in the differential results exceeding the preset judgment standard, representing a newly added severe impedance mismatch point. The preset judgment standard is a threshold set based on the upper limit of the background noise amplitude obtained from multiple differential operations in a lossless state, combined with the allowable differential fluctuation amplitude caused by scaffold environmental vibration, for example, set to 3 times the root mean square value of the lossless background noise. Calculate the time difference between the abrupt reflection peak and the sweep frequency probe pulse. The time difference is the time interval from transmitting the sweep frequency probe pulse to receiving the abrupt reflection peak. Determine the coordinates of the physical break point based on the time difference. The coordinates of the physical break point are the specific spatial location where the structural fracture occurred. Determining the coordinates of the physical break point requires first calculating the transmission distance, the relationship of which satisfies the formula: In the formula, This represents the transmission distance from the physical disconnection point to the injection point, in meters, calculated based on a 50% multiplication factor of the time difference and the wave velocity. Represents the speed of light in a vacuum, measured in meters per second, based on physical constants. The surface wave propagation velocity reduction factor is dimensionless and is set based on measured data of the ratio of the phase velocity of surface waves to the speed of light on a metal tube wall of a specific material. The time difference, expressed in seconds, is based on measured data of the difference between the arrival time of the abrupt reflection peak and the emission time of the sweep frequency detection pulse. This represents the total two-way transmission distance of the sweep frequency detection pulse, from the transmitter, through the physical disconnection point, and back to the receiver.

[0070] Based on the calculated transmission distance and combined with the spatial path of the target impedance smoothing region, the transmission distance is mapped to the coordinates of the physical breakpoint in three-dimensional space.

[0071] For example, upon receiving a structural anomaly signal, the communication gateway is triggered to inject a swept-frequency probe pulse into the target impedance smoothing region. The real-time echo spectrum formed by the reflection of the swept-frequency probe pulse within the target impedance smoothing region is received. The real-time echo spectrum is then differentially analyzed with the impedance spatial location reference topology spectrum to eliminate background noise and obtain the differential result. With a time variable of 0.0000001 seconds, the amplitude of the real-time echo spectrum is set to 500 millivolts, and the amplitude of the reference echo converted from the impedance spatial location reference topology spectrum to the time domain is set to 100 millivolts. The calculated amplitude of the differential result is 400 millivolts. The abrupt reflection peak caused by structural fracture is extracted from the differential result, and the time difference between the abrupt reflection peak and the swept-frequency probe pulse is calculated. The time difference is set to 0.0000001 seconds. The coordinates of the physical break point are determined based on the time difference. With the speed of light in a vacuum set to 299,792,458 meters per second and the surface wave propagation speed reduction factor set to 0.8, the calculated transmission distance from the physical break point to the injection point is 11.99 meters. Since the target impedance smoothing region has been uniquely locked by the near-field multipath normalization algorithm, and this smoothing region is isolated and divided by the adaptive sleeve impedance matching ring at the key branch node, under the high-frequency state of the sweep frequency probe pulse, the smoothing region is equivalent to a branchless unidirectional microwave transmission line. The system extracts the pipeline path topology contained in the target impedance smoothing region, and performs a one-dimensional extension mapping on the path topology of this specific smoothing region only, thereby eliminating the interference of distance ambiguity from other network branches, and uniquely determining the physical break point coordinates as 2 meters horizontally, 3 meters vertically, and 6.99 meters vertically. The above data directly verifies the effectiveness of the differential operation and the process of determining the physical break point coordinates.

[0072] The linkage alarm execution module integrates the coordinates of the physical disconnection point with the on / off status of the identification mark within the target impedance smoothing zone to generate a multi-dimensional linkage alarm command and execute the alarm.

[0073] In a preferred embodiment, a multi-dimensional linkage alarm command is generated and the alarm is executed by combining the coordinates of the physical disconnection point with the on / off status of the identification mark within the target impedance smoothing region. This includes: extracting the on / off status of the identification mark within the target impedance smoothing region and determining whether the identification mark has disappeared within the target impedance smoothing region.

[0074] When the identification mark disappears within the target impedance smoothing region, the dangerous area weight of the target impedance smoothing region is evaluated by combining the coordinates of the physical disconnection point.

[0075] By combining the weight of the hazardous area, the coordinates of the physical disconnection point, and the on / off status of the identification mark, a multi-dimensional linkage alarm command is generated to drive the on-site audio-visual equipment to execute the alarm.

[0076] In a preferred embodiment, when the identity marker disappears within the target impedance smoothing region, the dangerous area weight of the target impedance smoothing region is evaluated in conjunction with the coordinates of the physical disconnection point, including: obtaining the timestamp of the identity marker disappearing within the target impedance smoothing region, and comparing the timestamp with the generation time of the coordinates of the physical disconnection point.

[0077] Calculate the difference between the timestamp and the generation time to obtain the concurrent judgment interval representing the simultaneous occurrence of events. When the difference is within the concurrent judgment interval, it is determined that a person has fallen or violated the rules.

[0078] Based on the severity of personnel falls or violations of regulations, corresponding danger zone weights are assigned to the target impedance smoothing region.

[0079] Specifically, the on / off state of the identifier within the target impedance smoothing region is extracted. The on / off state of the identifier refers to the logical state of whether the communication gateway can continuously receive the near-field signal emitted by the RF chip. It is then determined whether the identifier disappears within the target impedance smoothing region. When the identifier disappears within the target impedance smoothing region, the timestamp of its disappearance is obtained. The timestamp is the precise moment recorded by the system clock as the last time a near-field signal was received. The timestamp is compared with the generation time of the physical disconnection point coordinates. The generation time is the system record time used to determine the physical disconnection point coordinates. The difference between the timestamp and the generation time is calculated. The difference is the absolute value of the time interval between the two moments, and the calculation relationship satisfies the formula: In the formula, This represents the difference, expressed in seconds, and is calculated based on the absolute value of the difference between the timestamp and the generation time. Represents a timestamp in seconds, set based on actual measured log data received by the communication gateway. This represents the generation time in seconds and is a system log data setting calculated based on a positioning algorithm.

[0080] Obtain the concurrency determination interval representing the simultaneous occurrence of events. The concurrency determination interval is a pre-defined allowable time error range used to determine whether two independent events are causally related. When the difference falls within the concurrency determination interval, it is determined that a personnel fall or violation of operation event has occurred. A personnel fall or violation of operation event refers to a dangerous situation where construction workers fall along with the guardrail or where protective facilities are intentionally damaged.

[0081] The vertical coordinates of the physical break point are extracted and used as the elevation parameter to characterize the potential fall risk. Simultaneously, the amplitude of the abrupt reflection peak in the aforementioned difference results is extracted and used as the energy abrupt change parameter to characterize the extent of scaffold structure failure. A preset severity assessment function is used to perform a positive correlation fusion calculation between the elevation parameter and the energy abrupt change parameter to obtain the severity of the personnel fall or violation event. The preset severity assessment function satisfies the formula: In the formula, The severity of an incident involving a representative falling or violating regulations is dimensionless. and These represent the weighting coefficients for elevation and energy mutation parameters, respectively. They are dimensionless and satisfy the following conditions: ; This represents the extracted elevation parameters, in meters. This represents the maximum design height of the scaffolding, in meters. The magnitude of the extracted energy mutation parameter is represented in millivolts. This represents the system's preset maximum reflection mutation threshold, measured in millivolts.

[0082] Based on the severity of personnel falls or operational violations, corresponding hazard zone weights are assigned to the target impedance smoothing zone. Hazard zone weights are numerical indicators that quantify the current hazard level of the zone, and their calculation relationship satisfies the formula: In the formula, Represents the weight of the danger zone, is dimensionless, and is set based on the calculation results of severity and difference. The severity of the incident, which represents the fall of a representative or violation of regulations, is dimensionless. It is obtained by combining the aforementioned elevation parameter (the higher the fall, the larger the value) and the energy mutation parameter (the larger the reflection peak amplitude, the more severe the damage). Its value is in the range of 1 to 10, for example, the numerical calculation result is 8.5. This represents the time decay coefficient, measured in fractions of a second, and is set based on empirical data showing that the correlation between events decreases over time.

[0083] By combining the weight of the hazardous area, the coordinates of the physical disconnection point, and the on / off status of identification markers, a multi-dimensional linkage alarm command is generated. This multi-dimensional linkage alarm command is a comprehensive control data packet containing information on the accident location, hazard level, and personnel status. It then drives the on-site audio-visual equipment to execute the alarm. The on-site audio-visual equipment is a combination of sirens and flashing lights installed at the construction site; upon receiving the command, it emits a high-decibel sound and a bright light as a warning.

[0084] For example, the on / off status of the identification marker within the target impedance smoothing zone is extracted to determine whether the identification marker disappears within the target impedance smoothing zone. When the identification marker disappears within the target impedance smoothing zone, the timestamp of the disappearance is obtained. The timestamp is set to 1620000000 seconds. The timestamp is compared with the generation time of the physical disconnection point coordinates. The generation time is set to 1620000002 seconds. The difference between the timestamp and the generation time is calculated. The calculated difference is 2 seconds. The concurrent judgment interval representing the simultaneous occurrence of events is obtained. The concurrent judgment interval is set to 0 seconds to 5 seconds. When the difference of 2 seconds falls within the concurrent judgment interval, a personnel fall or violation of operation event is determined to have occurred. Based on the severity of the personnel fall or violation of operation event, a corresponding danger zone weight is assigned to the target impedance smoothing zone. Following the previous module, the vertical coordinates of the physical disconnection point (6.99 meters) were extracted as the elevation parameter (assuming a maximum scaffold height of 20 meters), and the differential abrupt change reflection peak (400 millivolts) was extracted as the energy parameter (assuming a maximum threshold of 500 millivolts). Weighting coefficients of 0.6 and 0.4 were set, respectively, resulting in a calculated severity of approximately 5.3 for a personnel fall or violation incident. A time decay coefficient of 1 / 0.5 second was set, resulting in a calculated hazardous area weight of 2.65. Combining the hazardous area weight of 2.65, the coordinates of the physical disconnection point, and the on / off status of identification markers, a multi-dimensional linkage alarm command was generated, driving the on-site audio-visual equipment to trigger an alarm. The above data directly verified the effectiveness of the differential value calculation and hazardous area weight allocation process.

[0085] Each of the modules can be implemented in whole or in part through software, hardware, or a combination thereof. It supports hardware embedded in or independent of the processor in the computer device, and also supports software stored in the memory of the computer device, so that the processor can call and execute the operations corresponding to each of the above modules.

[0086] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A construction engineering construction safety intelligent management and control communication system, characterized in that, include: The topology mapping module drives the broadband radio frequency coupling fixture to inject radio frequency signals into the main uprights of the building scaffold, scans the initial standing wave ratio distribution of the building scaffold skeleton, and establishes an impedance spatial location reference topology map. The impedance smoothing zone division module installs adaptive sleeve-type impedance matching rings at key branch nodes of the building scaffold, adjusts the equivalent reactance of the adaptive sleeve-type impedance matching rings, and divides the building scaffold into multiple impedance smoothing zones according to the impedance spatial location reference topology map. Adaptive sleeve-type impedance matching rings are installed at key branch nodes of the building scaffolding. The equivalent reactance of the adaptive sleeve-type impedance matching rings is adjusted, and the building scaffolding is divided into multiple impedance smoothing zones based on the impedance spatial location reference topology map, including: Identify the locations where the longitudinal main beams and transverse horizontal beams of the building scaffold intersect, and determine the intersection locations as critical branch nodes; An adaptive sleeve-type impedance matching ring is configured at the critical branch node, and the equivalent reactance of the adaptive sleeve-type impedance matching ring is dynamically adjusted through the communication gateway. Monitor the surface wave transmission attenuation value during the equivalent reactance adjustment process, obtain the upper limit of surface wave transmission attenuation that meets the communication quality requirements as the attenuation judgment threshold, and divide the building scaffold into multiple impedance smoothing zones according to the impedance spatial location reference topology map when the surface wave transmission attenuation value is lower than the attenuation judgment threshold. The threshold generation module extracts environmental parameters of the impedance smoothing region to generate an environmental compensation factor. The environmental compensation factor is then used to correct the reference impedance threshold in the impedance spatial location reference topology map to obtain the real-time impedance judgment threshold. The structural anomaly monitoring module acquires the impedance change rate of the end load circuit generated by the impedance smoothing zone of the edge protection railing. When the impedance change rate of the end load circuit exceeds the real-time impedance judgment threshold, it determines that the edge protection railing has been illegally dismantled and generates a structural anomaly signal. The target area locking module receives the near-field signal carrying the identification mark emitted by the safety helmet when the physical logic switch is closed. It uses a multipath normalization algorithm combined with the feedback signal strength of the impedance smoothing region to lock the target impedance smoothing region corresponding to the near-field signal. The breakpoint coordinate determination module injects a sweep frequency detection pulse into the target impedance smoothing region to obtain a real-time echo spectrum when it receives a structural anomaly signal. It then performs differential operations on the real-time echo spectrum and the impedance spatial position reference topology spectrum to extract abrupt reflection peaks and calculates the time difference of the abrupt reflection peaks to determine the coordinates of the physical breakpoint. Upon receiving a structural anomaly signal, a swept-frequency probe pulse is injected into the target impedance smoothing region to acquire a real-time echo spectrum. The real-time echo spectrum is then differentially analyzed with the impedance spatial location reference topology spectrum to extract abrupt reflection peaks. The time difference between these abrupt reflection peaks is calculated to determine the coordinates of the physical breakpoint, including: Upon receiving a structural anomaly signal, the communication gateway is triggered to inject a sweep frequency probe pulse into the target impedance smoothing region; The real-time echo spectrum formed by the reflection of the frequency sweep probe pulse in the target impedance smooth region is received, and the real-time echo spectrum is differentially calculated with the impedance spatial position reference topology spectrum to eliminate background noise and obtain the differential result. Extract the abrupt reflection peak caused by structural fracture from the differential results, calculate the time difference between the abrupt reflection peak and the sweep frequency detection pulse, and determine the coordinates of the physical break point based on the time difference. The linkage alarm execution module integrates the coordinates of the physical disconnection point with the on / off status of the identification mark within the target impedance smoothing zone to generate multi-dimensional linkage alarm commands and execute the alarm.

2. The construction engineering construction safety intelligent management and control communication system based on claim 1, characterized in that, The broadband RF coupling fixture injects RF signals into the main uprights of the building scaffolding, scans the initial VSWR distribution of the scaffolding frame, and establishes an impedance spatial location reference topology map, including: The control communication gateway generates a broadband radio frequency excitation signal and transmits the broadband radio frequency excitation signal to the broadband radio frequency coupling fixture; The broadband radio frequency coupling fixture is driven to convert the broadband radio frequency excitation signal into surface wave energy and inject the surface wave energy into the main upright of the building scaffolding. Under standard installation conditions, the initial standing wave ratio distribution generated by the surface wave energy received by the building scaffold frame is scanned, and the initial standing wave ratio distribution is mapped to the spatial position of the building scaffold to establish an impedance spatial position reference topology map. 3.The construction engineering construction safety intelligent management and control communication system based on claim 1, characterized in that, Environmental parameters of the impedance smoothing region are extracted to generate an environmental compensation factor. This environmental compensation factor is then used to correct the reference impedance threshold in the impedance spatial location reference topology map, resulting in a real-time impedance determination threshold, including: Humidity data, temperature data, and estimated oxide layer values ​​of the metal pipe wall are collected in real time through the communication gateway within the impedance smoothing region. The humidity data, temperature data, and estimated oxide layer values ​​are then combined into environmental parameters. A multivariate joint compensation function reflecting the relationship between environmental factors and impedance drift is constructed. Environmental parameters are input into the multivariate joint compensation function for calculation, and an environmental compensation factor is generated to characterize the degree of environmental noise interference. The reference impedance threshold is extracted from the reference topology map of impedance spatial location, and the reference impedance threshold is dynamically corrected using an environmental compensation factor to obtain the real-time impedance judgment threshold.

4. The construction engineering construction safety intelligent management and control communication system based on claim 1, characterized in that, The impedance change rate of the end load circuit generated by the impedance smoothing zone of the edge protection railing is obtained. When the impedance change rate of the end load circuit exceeds the real-time impedance judgment threshold, it is determined that the edge protection railing has been illegally dismantled and a structural abnormality signal is generated, including: The edge protection railing is connected to the impedance smoothing zone through elastic conductive contacts to form an end load circuit; Real-time monitoring of electrical signal changes in the end-load circuit, and calculation of the impedance change rate of the end-load circuit; An environmental noise envelope is constructed using the real-time impedance judgment threshold as a boundary condition. When the rate of change of the end load circuit impedance exceeds the environmental noise envelope in adjacent sampling periods, it is determined that the edge guardrail has been illegally dismantled and a structural abnormality signal is generated.

5. The intelligent management and control communication system based on construction engineering construction safety according to claim 1, characterized in that, The system receives a near-field signal carrying an identification identifier emitted by the helmet when its physical logic switch is closed. Using a multipath normalization algorithm combined with the feedback signal strength of the impedance smoothing region, it locks onto the target impedance smoothing region corresponding to the near-field signal, including: The system detects the closed state of the mechanical series circuit formed by the head gravity switch of the safety helmet and the buckle switch of the chin strap. When the mechanical series circuit is closed, the radio frequency chip is activated. The radio frequency chip is controlled to emit a near-field signal carrying an identification identifier, which is then captured by the pipe wall of the building scaffold to form a feedback surface wave; The feedback signal intensity of the surface wave in each impedance smoothing region is extracted, and the feedback signal intensity is processed using a multipath normalization algorithm to lock the target impedance smoothing region corresponding to the near-field signal.

6. The intelligent management and control communication system based on construction engineering construction safety according to claim 1, characterized in that, Based on the coordinates of the physical disconnection point and the on / off status of the identification marker within the target impedance smoothing zone, a multi-dimensional linkage alarm command is generated and executed, including: Extract the on / off state of the identity marker within the target impedance smoothing region, and determine whether the identity marker disappears within the target impedance smoothing region; When the identification mark disappears within the target impedance smoothing region, the dangerous area weight of the target impedance smoothing region is evaluated by combining the coordinates of the physical disconnection point. By combining the weight of the hazardous area, the coordinates of the physical disconnection point, and the on / off status of the identification mark, a multi-dimensional linkage alarm command is generated to drive the on-site audio-visual equipment to execute the alarm.

7. The intelligent management and communication system for construction safety in building engineering according to claim 6, characterized in that, When the identification marker disappears within the target impedance smoothing region, the danger zone weight of the target impedance smoothing region is evaluated in conjunction with the coordinates of the physical disconnection point, including: Obtain the timestamp when the identity identifier disappears within the target impedance smoothing region, and compare the timestamp with the generation time of the physical disconnection point coordinates; Calculate the difference between the timestamp and the generation time to obtain the concurrent judgment interval representing the simultaneous occurrence of events. When the difference is within the concurrent judgment interval, it is determined that a person has fallen or violated the rules of operation. Based on the severity of personnel falls or violations of regulations, corresponding danger zone weights are assigned to the target impedance smoothing region.

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