A magnetic sensor-based self-organizing network type intelligent safety belt

Abstract

The application discloses a kind of self-organizing network type intelligent safety belt based on magnetic sensor, belong to safety equipment technical field.The intelligent safety belt includes safety belt body, safety hook, monitoring main module, monitoring auxiliary module and early warning system platform;The monitoring auxiliary module includes first MCU, chest hook monitoring module, scaffold monitoring module and hook switch monitoring module;The scaffold monitoring module and the chest hook module are integrated structure, connected to magnetic sensor;When the safety hook is hung into the iron pipe of scaffold, the hook switch monitoring module is used to detect the opening and closing state of safety hook, the scaffold monitoring module and the chest hook monitoring module are used to obtain the signal strength variation data of magnetic sensor, and the first MCU judges whether the safety hook contains scaffold or not.The application can monitor the safety belt hook state and personnel real-time dynamic in real time, and can effectively protect the personal safety of high-altitude operation personnel.

Description

Technical Field

[0001] This invention patent relates to the field of safety equipment technology, and in particular to a self-organizing network-type smart safety belt based on magnetic sensors. Background Technology

[0002] In shipbuilding and repair enterprises, there are many high-altitude operations, and safety belts play a crucial role as the primary protective tool against falls from heights. Safety belts must be used correctly when working at heights; they must be used when the height exceeds 1.5 meters; safety belts should not be lost when climbing poles or moving positions; and the safety belt should be checked securely at all times during the operation. If the hook is not properly secured during high-altitude operations, it will seriously threaten the personal safety of workers and hinder the safe and effective conduct of high-altitude work.

[0003] Currently, during high-altitude operations, ground supervisors constantly monitor the wearing and suspension of safety belts. However, due to the working location and height, ground supervisors must look upwards to observe and monitor, where the sunlight is relatively glaring. Furthermore, the hooks are relatively small and their installation locations are often concealed, making it difficult for ground supervisors to observe. This severely impacts their ability to assess the situation of workers at height. If a safety belt is not properly fastened, it is impossible to promptly warn or order rectification. In case of an emergency, there is no immediate warning, potentially missing the optimal rescue time. Therefore, a smart safety belt capable of real-time detection and one-button alarm is essential. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this invention is to provide a self-organizing network intelligent safety belt device and early warning system based on magnetic sensors, which can monitor the status of the safety belt hook and the real-time dynamics of personnel. Once an unsafe behavior occurs, it can issue an early warning and transmit it to the ground supervisor, which can effectively protect the personal safety of personnel working at heights.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This application provides a self-organizing network-type smart safety belt based on magnetic sensors. The smart safety belt includes a safety belt body, a safety hook, a main monitoring module, an auxiliary monitoring module, and an early warning system platform.

[0007] The main monitoring module is fixed to the seat belt body, the auxiliary monitoring module is installed on the safety hook, the auxiliary monitoring module is communicatively connected to the main monitoring module, and the main monitoring module is communicatively connected to the early warning system platform.

[0008] The monitoring auxiliary module includes a first MCU, a chest hook monitoring module, a scaffolding monitoring module, and a hook switch monitoring module. The chest hook monitoring module, the scaffolding monitoring module, and the hook switch monitoring module are all connected to the first MCU. The scaffolding monitoring module and the chest hook module are an integrated structure and are connected to a magnetic sensor. When the safety hook is hooked into or out of the iron pipe of the scaffolding, the hook switch monitoring module is used to detect the opening and closing state of the safety hook. The scaffolding monitoring module and the chest hook monitoring module are used to acquire the signal strength change data of the magnetic sensor. The first MCU determines whether there is scaffolding inside the safety hook based on the signal strength of the magnetic sensor, the opening and closing state of the safety hook, and the signal strength change data of the magnetic sensor.

[0009] Furthermore, a magnetic sensor and a small magnet are respectively installed at the opening of the safety hook. A magnetic isolation sheet is provided between the magnetic sensor and the small magnet. The magnetic field of the small magnet excites the magnetic sensor in positive phase. Whether the iron tube of the scaffold is located between the magnetic sensor and the small magnet can affect the signal strength detected by the magnetic sensor.

[0010] Furthermore, the monitoring auxiliary module also includes a sleep / wake-up module, a first Bluetooth communication module, and a first power supply module. The sleep / wake-up module, the first Bluetooth communication module, and the first power supply module are all connected to the first MCU. The first power supply module provides power to the auxiliary module as a whole. The first Bluetooth communication module can connect to the monitoring main module. The sleep / wake-up module sends a wake-up signal to the first MCU when the first Bluetooth communication module is connected to the monitoring main module, and sends a sleep signal to the first MCU after a first period of time when the first Bluetooth communication module is not connected to the monitoring main module. The monitoring auxiliary module is installed at the safety belt hook. The first MCU monitors and determines in real time whether there is scaffolding inside the safety hook and uploads the determination information to the monitoring main module via the first Bluetooth communication module.

[0011] Furthermore, the monitoring main module includes a second MCU, a startup module, a second Bluetooth communication module, and a second power supply module. The startup module, the second Bluetooth communication module, and the second power supply module are all connected to the second MCU. The second Bluetooth communication module is connected to the first Bluetooth communication module. The second power supply module is used to supply power to the monitoring main module.

[0012] Furthermore, the monitoring main module also includes a one-button alarm module, a GPS positioning module, an audible and visual alarm module, and a remote communication module. The one-button alarm module, GPS positioning module, audible and visual alarm module, and remote communication module are all connected to the second MCU. The remote communication module is connected to the early warning system platform. The one-button alarm module has a mechanical button; when the mechanical button is pressed and held for a second duration, the one-button alarm module emits an alarm signal and reports it to the early warning system platform via the remote communication module. The GPS positioning module is used to collect the wearer's real-time GPS information.

[0013] Furthermore, the audible and visual alarm module includes a speaker and an LED light; when the main monitoring module or the auxiliary monitoring module malfunctions, the speaker sounds an alarm and the LED light flashes.

[0014] Furthermore, the remote communication module is one or more of the following: WiFi module, 2G communication chip, 3G communication chip, 4G communication chip, 5G communication chip, and LoRa communication protocol module.

[0015] Furthermore, the monitoring main module also includes a low power alarm module, which is connected to the second power supply module. When the voltage of the second power supply module is lower than a first voltage threshold, the low power alarm module issues a power warning signal.

[0016] Furthermore, the auxiliary monitoring module also includes a first UWB position difference positioning module, which is connected to the first MCU; the main monitoring module includes a second UWB position difference positioning module, which is connected to the second MCU; the second MCU can determine the distance between the main monitoring module and the auxiliary monitoring module based on the positioning distance between the second UWB position difference positioning module and the first UWB position difference positioning module, and when the distance between the main monitoring module and the auxiliary monitoring module is greater than a first distance threshold, the audible and visual alarm module issues a warning signal.

[0017] Furthermore, the early warning system platform includes a data acquisition terminal, a base station, a server, and a management terminal; wherein, the data acquisition terminal is connected to the server in the public network through a remote transmission module; the server and the data acquisition terminal interact with each other through a local area network or a wide area network constructed by the base station; the server and the management terminal interact with each other through a local area network or a wide area network constructed by the base station.

[0018] Compared with existing technologies, the present invention has the following beneficial effects: The intelligent safety belt includes a safety belt body, a safety hook, a main monitoring module, an auxiliary monitoring module, and an early warning system platform. When the safety hook is hooked into or out of the iron pipe of the scaffold, the hook switch monitoring module is used to detect the opening and closing status of the safety hook. The scaffold monitoring module and the chest hook monitoring module are used to acquire the signal strength change data of the magnetic sensor. The first MCU determines whether there is scaffold inside the safety hook based on the signal strength of the magnetic sensor, the opening and closing status of the safety hook, and the signal strength change data of the magnetic sensor. It can monitor the status of the safety belt hook and the real-time dynamics of personnel in real time. Once an unsafe behavior occurs, it can issue an early warning and transmit it to the ground supervisor, which can effectively protect the personal safety of personnel working at heights. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the specific implementation or prior art description will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A block diagram illustrating the principle of a self-organizing network-based smart seatbelt based on a magnetic sensor, provided in an embodiment of the present invention.

[0021] Figure 2 A flowchart illustrating the principle of a self-organizing network-based smart seatbelt based on magnetic sensors, provided in an embodiment of the present invention.

[0022] Figure 3 This is a flowchart of the logic for determining if a hook is not attached, provided in an embodiment of the present invention.

[0023] Figure 4 The flowchart for the sleep / wake-up logic judgment provided in the embodiment of the present invention;

[0024] Figure 5 A flowchart of the early warning logic judgment provided in the embodiments of the present invention;

[0025] Figure 6 This is a schematic diagram of the monitoring auxiliary module provided in an embodiment of the present invention;

[0026] In the diagram, 101 is the Bluetooth communication module; 102 is the battery module; 103 is the data interface; 104 is the ASIC circuit chip; 105 is the magnetic isolator; 106 is the GMR chip; and 107 is the excitation magnet. Detailed Implementation

[0027] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0028] Example 1

[0029] Embodiment 1 of this invention provides a self-organizing network-based intelligent safety belt based on magnetic sensors, namely a monitoring device and method for identifying the hook insertion and removal in high-altitude operations. Based on the application requirements of high-altitude work areas, it uses magnetic sensors for non-contact monitoring of hook insertion and removal, and implements functions such as chest attachment, scaffold attachment, no attachment, and open status through MCU algorithm logic according to signal strength and category, with real-time linkage of sound and light and real-time warnings. This enables traceability of historical data on safety belt usage in complex scaffolding work environments, and provides functions such as alarm information, GPS positioning maps, hook monitoring status, SMS reminders, and historical data queries to ensure personnel safety.

[0030] like Figure 1 , Figure 2 As shown, a self-organizing network-based smart safety belt based on magnetic sensors includes a monitoring auxiliary module, a monitoring main module, and a system platform, belonging to the field of safety equipment technology. It includes a waist belt, shoulder straps, anti-slip straps, hooks (safety hooks on the safety belt), a monitoring main module (hereinafter referred to as the main module), and a monitoring auxiliary module (hereinafter referred to as the auxiliary module). The monitoring main module is fixed to the chest safety belt and mainly includes a start module, a one-button alarm module, a GPS positioning module, an audible and visual alarm module, a remote communication module, a low battery alarm module, a Bluetooth communication module, a power supply module, and an MCU, etc. The monitoring auxiliary module is installed on the hook and mainly includes a chest hook monitoring module, a scaffolding monitoring module, a hook switch monitoring module, a sleep / wake-up module, a UWB position difference positioning module, a Bluetooth communication module, a power supply module, and an MCU, etc. The system platform includes a server and a user terminal. The monitoring auxiliary module uses magnetic sensor chip technology to realize whether the hook is hooked or not. The server is used to obtain the display information from the early warning module via a remote communication module. This enables the large display screen to show abnormal behavior information and provides functions such as alarm information, GPS location maps, hook monitoring status, SMS alerts, and historical data queries. The main monitoring module processes terminal information and provides real-time audio and visual alerts to wearers to ensure their safety.

[0031] The main monitoring module of the self-organizing network smart seat belt is fixed to the chest seat belt. It mainly includes a start module, a one-button alarm module, a GPS positioning module, an audible and visual alarm module, a remote communication module, a low battery alarm module, a Bluetooth communication module, and a power supply module. The start module, one-button alarm module, GPS positioning module, audible and visual alarm module, remote communication module, low battery alarm module, Bluetooth communication module, and power supply module are electrically connected to the MCU. The power supply module is used to supply power to the smart seat belt monitoring main module.

[0032] The monitoring auxiliary module is installed on the hook and mainly includes a chest hook monitoring module, a scaffolding monitoring module, a hook switch monitoring module, a sleep / wake-up module, a UWB position difference positioning module, a Bluetooth communication module, and a power supply module. The chest hook monitoring module, scaffolding monitoring module, hook switch monitoring module, sleep / wake-up module, UWB position difference positioning module, Bluetooth communication module, and power supply module are electrically connected to the MCU. The power supply module is used to supply power to the intelligent safety belt monitoring auxiliary module.

[0033] The scaffolding monitoring module and the chest hook module are the same hardware. When the safety hook is hooked in or out, a magnetic sensor is set up to monitor the surrounding magnetic properties. When the iron round pipe of the scaffolding or other structures is close to the magnetic sensor and magnet, the surrounding magnetic field will change. The change in magnetic field is used to determine whether scaffolding is present and to give a hooking signal. The magnetic sensor signal strength is different depending on the degree of influence of the scaffolding and the chest hook on the magnetic field, which determines whether the hook is on the scaffolding or on the chest.

[0034] The system platform includes: a data acquisition terminal, a base station, a server (or cloud server), and a management terminal. The data acquisition terminal connects to the server on the public network via a remote transmission module. The server and data acquisition terminal interact via a local area network (LAN) or wide area network (WAN) constructed by the base station. The server and management terminal interact via a LAN or WAN, the choice of which can be made based on actual needs. The server obtains the display information from the early warning module via a remote communication module. The system platform controls the large display screen to show abnormal behavior information, enabling functions such as alarm information, GPS location maps, hook monitoring status, SMS reminders, and historical data queries.

[0035] A magnetic sensor (GMR sensor) and a small magnet are installed at the opening of the hook. The hook switch excites the magnetic sensor in the positive phase through the magnetic field of the small magnet. Based on the influence of ferrous material on the magnetic field, the magnetic sensor corresponds to different signal strengths, thereby determining whether the hook is hooked in or out.

[0036] A magnetic isolator is placed at the opening of the hook between the magnetic sensor (GMR sensor) and the small magnet.

[0037] Two mutually orthogonal magnetic sensor arrays are designed on the hook head to monitor the metal or steel material that is hung. The system includes two directional magnetic sensor chips and uses a simple algorithm to monitor the reliability of the hung object.

[0038] The sound and light alarm module is a sound and light alarm device. After receiving the sound and light alarm signal, the sound alarm emits a preset sound and the LED light flashes to warn of the alarm.

[0039] The MCU is a microcontroller unit or microprocessor chip. The MCU is electrically connected to each module and has built-in control logic software to realize the comprehensive control and processing of the status signals, power signals, alarm signals, and signal transmission of each sensor.

[0040] The main monitoring module includes a GPS module, which is used to collect the wearer's real-time GPS information and transmit the GPS information to the MCU.

[0041] The wireless transmission between the monitoring main modules is achieved through the Bluetooth communication module.

[0042] The remote communication module in the main monitoring module is one or more of the following: WiFi module, 2G / 3G / 4G / 5G communication module, and LoRa communication protocol. Preferably, each main module uses an independent communication transceiver channel, and the remote communication module uses a 3G, 4G, or 5G communication chip.

[0043] The main monitoring module alarms low battery by determining the battery level based on SOC or voltage, and outputs a battery level warning signal.

[0044] The UWB position difference positioning module in the main monitoring module and the auxiliary monitoring module provides early warnings for low hooking and high hooking based on the relative position difference between the two. The trigger condition is that when the hook is already in place, if the hook is 0.3m lower than the main module setting, an early warning will be issued.

[0045] The auxiliary monitoring module has a built-in sleep module. While it has no power switch, entering sleep mode ensures the entire module operates at low power, maximizing its long-term stable operation. When in sleep mode, the module resumes normal operation upon receiving a start signal. This, combined with the sleep module, further ensures the long-term stable operation of the auxiliary monitoring module.

[0046] Specifically, the monitoring auxiliary module is equipped with a safety belt hook insertion and removal monitoring module. The insertion and removal of the safety hook is monitored by setting up a magnetic sensor to monitor the surrounding magnetic characteristics. When the iron round pipe of scaffolding, etc., is close to the magnetic sensor and magnet, the surrounding magnetic field will change. The change of magnetic field is used to determine whether scaffolding is present and to give an insertion and removal signal. The magnetic sensor signal strength is different depending on the degree of influence of scaffolding and chest hook on the magnetic field, which determines whether it is hung on scaffolding or chest hook.

[0047] Specifically, the monitoring auxiliary module is equipped with a seat belt hook switch module. A magnetic sensor (GMR sensor) and a small magnet are set at the opening of the hook. The hook switch excites the magnetic sensor in the positive phase through the magnetic field of the small magnet. Based on the influence of ferrous material on the magnetic field, the signal strength corresponding to the magnetic sensor is different, thereby determining whether the hook is hooked in or out.

[0048] The main monitoring module is equipped with a one-button alarm module, which, when pressed and held for 3 seconds in conjunction with a mechanical button, will send an alarm signal and report it to the system server via a remote communication module.

[0049] like Figure 3 As shown, the hook-not-hooked logic judgment in the control circuit of the hook monitoring system module mainly involves converting the received Hall signal into a recognizable signal and determining what kind of signal it is. A switch signal is used as a precondition for judgment. To prevent false alarms, a switch signal timeout judgment is added. If the timeout occurs, the system continues to wait for a signal. If the signal does not time out, it checks for a hook signal. If no hook signal is detected, it checks for switch timeout. If a hook signal is detected, it further checks if it is a strong signal, and then determines whether it is a scaffolding signal or a hook-on-chest signal.

[0050] like Figure 4 As shown, the sleep / wake logic primarily determines whether to wake up the hook monitoring system module or enter sleep mode. It wakes the module based on a received start signal, which can take various forms, such as a Bluetooth connection signal (if the main module has a Bluetooth connection), or a power switch signal. It is recommended to use either the Bluetooth connection signal or the main module's start signal as the basis for the decision. A timer module needs to be included in the sleep / wake logic; its main function is to determine whether the module automatically enters sleep mode after the main module is powered off.

[0051] like Figure 5 As shown, the main module's early warning logic judgment is primarily used to process the signals in the hook-not-attached logic judgment to determine if there is a signal. If there is a signal, an audible and visual warning is issued, and the information is uploaded to the cloud. Then, it is determined whether the signal is from the scaffolding or the hook on the chest, and the information is uploaded to the cloud.

[0052] Compared with the prior art, the beneficial effects of the present invention are:

[0053] Logic Design: Based on the hook opening signal and the safety rope insertion / extraction signal from the safety frame (scaffolding), a logic arithmetic unit is set up to calculate logical expressions for various states. The safety belt warning system includes a server, a secondary monitoring module, and a primary monitoring module. Information from the primary monitoring module is exchanged via a remote communication module. The secondary monitoring module's battery ensures its normal operation, while the primary monitoring module's battery ensures its normal operation. Hook insertion / extraction is monitored by using two magnetic sensor cross arrays to detect the ferromagnetic properties of the safety frame (such as scaffolding). A magnetic sensor (GMR sensor) and a small magnet are placed at the hook opening. The hook switch stimulates the magnetic sensor via the small magnet. A non-contact method is used, relying on electromagnetic signals detected by the magnetic sensor, and the signal strength is used to determine whether it is a hook switch signal or a safety belt hook insertion / extraction. The server interacts with the data acquisition terminal via a local area network (LAN) or wide area network (WAN) built from the base station; the server interacts with the management terminal via a WAN. The server obtains the display information of the early warning module through the remote communication module, and interacts with the management terminal through the system platform to control the display screen to display abnormal behavior information, so as to realize functions such as alarm information, GPS positioning map, hook monitoring status, SMS reminders, and historical data query.

[0054] Example 2

[0055] Embodiment 2 includes all the technical features of Embodiment 1. Based on the same inventive concept, in Embodiment 2, as... Figure 1 , Figure 2 As shown, a self-organizing network-type smart safety belt based on magnetic sensors is provided. The smart safety belt includes a safety belt body, a safety hook, a main monitoring module, an auxiliary monitoring module, and an early warning system platform.

[0056] The main monitoring module is fixed to the seat belt body, the auxiliary monitoring module is installed on the safety hook, the auxiliary monitoring module is communicatively connected to the main monitoring module, and the main monitoring module is communicatively connected to the early warning system platform.

[0057] The monitoring auxiliary module includes a first MCU, a chest hook monitoring module, a scaffolding monitoring module, and a hook switch monitoring module. The chest hook monitoring module, the scaffolding monitoring module, and the hook switch monitoring module are all connected to the first MCU. The scaffolding monitoring module and the chest hook module are an integrated structure and are connected to a magnetic sensor. When the safety hook is hooked into or out of the iron pipe of the scaffolding, the hook switch monitoring module is used to detect the opening and closing state of the safety hook. The scaffolding monitoring module and the chest hook monitoring module are used to acquire the signal strength change data of the magnetic sensor. The first MCU determines whether there is scaffolding inside the safety hook based on the signal strength of the magnetic sensor, the opening and closing state of the safety hook, and the signal strength change data of the magnetic sensor.

[0058] like Figure 6 As shown, Figure 6 This is a schematic diagram of the monitoring auxiliary module provided in this embodiment. The front of the monitoring auxiliary module includes a Bluetooth communication module 101, a battery module 102, a data interface 103, an ASIC circuit chip 104, a magnetic isolation sheet 105, and a GMR chip 106, where the GMR chip 106 is a magnetic sensor. The back of the monitoring auxiliary module includes an excitation magnet 107.

[0059] Furthermore, a magnetic sensor (GMR sensor) and a small magnet are respectively installed at the opening of the safety hook. A magnetic isolation sheet is provided between the magnetic sensor (GMR sensor) and the small magnet. The magnetic field of the small magnet excites the magnetic sensor in positive phase. Whether the iron tube of the scaffold is located between the magnetic sensor (GMR sensor) and the small magnet can affect the signal strength detected by the magnetic sensor.

[0060] Furthermore, the monitoring auxiliary module also includes a sleep / wake-up module, a first Bluetooth communication module, and a first power supply module. The sleep / wake-up module, the first Bluetooth communication module, and the first power supply module are all connected to the first MCU. The first power supply module provides power to the auxiliary module as a whole. The first Bluetooth communication module can connect to the monitoring main module. The sleep / wake-up module sends a wake-up signal to the first MCU when the first Bluetooth communication module is connected to the monitoring main module, and sends a sleep signal to the first MCU after a first period of time when the first Bluetooth communication module is not connected to the monitoring main module. The monitoring auxiliary module is installed at the safety belt hook. The first MCU monitors and determines in real time whether there is scaffolding inside the safety hook and uploads the determination information to the monitoring main module via the first Bluetooth communication module.

[0061] Furthermore, the monitoring main module includes a second MCU, a startup module, a second Bluetooth communication module, and a second power supply module. The startup module, the second Bluetooth communication module, and the second power supply module are all connected to the second MCU. The second Bluetooth communication module is connected to the first Bluetooth communication module. The second power supply module is used to supply power to the monitoring main module.

[0062] Furthermore, the monitoring main module also includes a one-button alarm module, a GPS positioning module, an audible and visual alarm module, and a remote communication module. The one-button alarm module, GPS positioning module, audible and visual alarm module, and remote communication module are all connected to the second MCU. The remote communication module is connected to the early warning system platform. The one-button alarm module has a mechanical button; when the mechanical button is pressed and held for a second duration, the one-button alarm module emits an alarm signal and reports it to the early warning system platform via the remote communication module. The GPS positioning module is used to collect the wearer's real-time GPS information.

[0063] Furthermore, the audible and visual alarm module includes a speaker and an LED light; when the main monitoring module or the auxiliary monitoring module malfunctions, the speaker sounds an alarm and the LED light flashes.

[0064] Furthermore, the remote communication module is one or more of the following: WiFi module, 2G communication chip, 3G communication chip, 4G communication chip, 5G communication chip, and LoRa communication protocol module.

[0065] Furthermore, the monitoring main module also includes a low power alarm module, which is connected to the second power supply module. When the voltage of the second power supply module is lower than a first voltage threshold, the low power alarm module issues a power warning signal.

[0066] Furthermore, the auxiliary monitoring module also includes a first UWB position difference positioning module, which is connected to the first MCU; the main monitoring module includes a second UWB position difference positioning module, which is connected to the second MCU; the second MCU can determine the distance between the main monitoring module and the auxiliary monitoring module based on the positioning distance between the second UWB position difference positioning module and the first UWB position difference positioning module, and when the distance between the main monitoring module and the auxiliary monitoring module is greater than a first distance threshold, the audible and visual alarm module issues a warning signal.

[0067] Furthermore, the early warning system platform includes a data acquisition terminal, a base station, a server (or cloud server), and a management terminal; wherein, the data acquisition terminal is connected to the server in the public network through a remote transmission module; the server and the data acquisition terminal interact with each other through a local area network or wide area network constructed by the base station; the server and the management terminal interact with each other through a local area network or wide area network constructed by the base station.

[0068] Combination Figure 1 , Figure 2 This is a flowchart illustrating the principle of a self-organizing network-based smart seatbelt based on magnetic sensors. Figure 2 It also specifically reflects Figure 1 Details of the corresponding structure.

[0069] When in use, the flowchart for the logic judgment of the hook not being attached is as follows: Figure 3 As shown in the diagram, the sleep / wake logic decision flowchart is as follows: Figure 4 As shown, the flowchart of the early warning logic judgment is as follows: Figure 5 As shown.

[0070] like Figure 3 As shown, the hook-not-hooked logic judgment in the control circuit of the hook monitoring system module mainly involves converting the received Hall signal into a recognizable signal and determining what kind of signal it is. A switch signal is used as a precondition for judgment. To prevent false alarms, a switch signal timeout judgment is added. If the timeout occurs, the system continues to wait for a signal. If the signal does not time out, it checks for a hook signal. If no hook signal is detected, it checks for switch timeout. If a hook signal is detected, it further checks if it is a strong signal, and then determines whether it is a scaffolding signal or a hook-on-chest signal.

[0071] like Figure 4 As shown, the sleep / wake logic primarily determines whether to wake up the hook monitoring system module or enter sleep mode. It wakes the module based on a received start signal, which can take various forms, such as a Bluetooth connection signal (if the main module has a Bluetooth connection), or a power switch signal. It is recommended to use either the Bluetooth connection signal or the main module's start signal as the basis for the decision. A timer module needs to be included in the sleep / wake logic; its main function is to determine whether the module automatically enters sleep mode after the main module is powered off.

[0072] like Figure 5 As shown, the main module's early warning logic judgment is primarily used to process the signals in the hook-not-attached logic judgment to determine if there is a signal. If there is a signal, an audible and visual warning is issued, and the information is uploaded to the cloud. Then, it is determined whether the signal is from the scaffolding or the hook on the chest, and the information is uploaded to the cloud.

[0073] Compared with existing technologies, the present invention has the following beneficial effects: The intelligent safety belt includes a safety belt body, a safety hook, a main monitoring module, an auxiliary monitoring module, and an early warning system platform. When the safety hook is hooked into or out of the iron pipe of the scaffold, the hook switch monitoring module is used to detect the opening and closing status of the safety hook. The scaffold monitoring module and the chest hook monitoring module are used to acquire the signal strength change data of the magnetic sensor. The first MCU determines whether there is scaffold inside the safety hook based on the signal strength of the magnetic sensor, the opening and closing status of the safety hook, and the signal strength change data of the magnetic sensor. It can monitor the status of the safety belt hook and the real-time dynamics of personnel in real time. Once an unsafe behavior occurs, it can issue an early warning and transmit it to the ground supervisor, which can effectively protect the personal safety of personnel working at heights.

[0074] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A self-organizing network-based intelligent safety belt based on magnetic sensors, characterized in that: The intelligent safety belt includes a safety belt body, a safety hook, a main monitoring module, an auxiliary monitoring module, and an early warning system platform; The main monitoring module is fixed to the seat belt body, the auxiliary monitoring module is installed on the safety hook, the auxiliary monitoring module is communicatively connected to the main monitoring module, and the main monitoring module is communicatively connected to the early warning system platform. The monitoring auxiliary module includes a first MCU, a chest hook monitoring module, a scaffolding monitoring module, and a hook switch monitoring module. The chest hook monitoring module, the scaffolding monitoring module, and the hook switch monitoring module are all connected to the first MCU. The scaffolding monitoring module and the chest hook module are an integrated structure and are connected to a magnetic sensor. When the safety hook is hooked into or out of the iron pipe of the scaffolding, the hook switch monitoring module is used to detect the opening and closing state of the safety hook. The scaffolding monitoring module and the chest hook monitoring module are used to acquire the signal strength change data of the magnetic sensor. The first MCU determines whether there is scaffolding inside the safety hook based on the signal strength of the magnetic sensor, the opening and closing state of the safety hook, and the signal strength change data of the magnetic sensor. A magnetic sensor and a small magnet are respectively installed at the opening of the safety hook. A magnetic isolation plate is provided between the magnetic sensor and the small magnet. The magnetic field of the small magnet excites the magnetic sensor in the positive phase. Whether the iron tube of the scaffold is located between the magnetic sensor and the small magnet can affect the signal strength detected by the magnetic sensor.

2. The self-organizing network smart safety belt based on a magnetic sensor according to claim 1, characterized in that: The monitoring auxiliary module further includes a sleep / wake-up module, a first Bluetooth communication module, and a first power supply module. The sleep / wake-up module, the first Bluetooth communication module, and the first power supply module are all connected to the first MCU. The first power supply module powers the monitoring auxiliary module. The first Bluetooth communication module can connect to the monitoring main module. The sleep / wake-up module sends a wake-up signal to the first MCU when the first Bluetooth communication module is connected to the monitoring main module, and sends a sleep signal to the first MCU after a first period of time when the first Bluetooth communication module is not connected to the monitoring main module. The monitoring auxiliary module is installed at the safety belt hook. The first MCU monitors and determines in real time whether there is scaffolding inside the safety hook and uploads the determination information to the monitoring main module via the first Bluetooth communication module.

3. The self-organizing network smart safety belt based on a magnetic sensor according to claim 2, characterized in that: The monitoring main module includes a second MCU, a startup module, a second Bluetooth communication module, and a second power supply module. The startup module, the second Bluetooth communication module, and the second power supply module are all connected to the second MCU. The second Bluetooth communication module is connected to the first Bluetooth communication module. The second power supply module is used to supply power to the monitoring main module.

4. The self-organizing network smart safety belt based on a magnetic sensor according to claim 3, characterized in that: The monitoring main module also includes a one-button alarm module, a GPS positioning module, an audible and visual alarm module, and a remote communication module. The one-button alarm module, the GPS positioning module, the audible and visual alarm module, and the remote communication module are all connected to the second MCU. The remote communication module is connected to the early warning system platform. The one-button alarm module has a mechanical button. When the mechanical button is pressed and held for a second duration, the one-button alarm module emits an alarm signal and reports it to the early warning system platform through the remote communication module. The GPS positioning module is used to collect the wearer's real-time GPS information.

5. The self-organizing network smart safety belt based on a magnetic sensor according to claim 4, characterized in that: The audible and visual alarm module includes a speaker and an LED light; when the main monitoring module or the auxiliary monitoring module malfunctions, the speaker will sound an alarm and the LED light will flash.

6. The self-organizing network smart safety belt based on a magnetic sensor according to claim 4, characterized in that: The remote communication module is one or more of the following: WiFi module, 2G communication chip, 3G communication chip, 4G communication chip, 5G communication chip, and LoRa communication protocol module.

7. The self-organizing network smart safety belt based on a magnetic sensor according to claim 3, characterized in that: The monitoring main module also includes a low power alarm module, which is connected to the second power supply module. When the voltage of the second power supply module is lower than a first voltage threshold, the low power alarm module issues a power warning signal.

8. The self-organizing network smart safety belt based on a magnetic sensor according to claim 4, characterized in that: The auxiliary monitoring module further includes a first UWB position difference positioning module, which is connected to the first MCU; the main monitoring module includes a second UWB position difference positioning module, which is connected to the second MCU; the second MCU can determine the distance between the main monitoring module and the auxiliary monitoring module based on the positioning distance between the second UWB position difference positioning module and the first UWB position difference positioning module, and when the distance between the main monitoring module and the auxiliary monitoring module is greater than a first distance threshold, the audible and visual alarm module issues a warning signal.

9. The self-organizing network smart safety belt based on a magnetic sensor according to claim 4, characterized in that: The early warning system platform includes a data acquisition terminal, a base station, a server, and a management terminal; wherein, the data acquisition terminal is connected to the server in the public network through a remote transmission module; the server and the data acquisition terminal interact with each other through a local area network or a wide area network constructed by the base station; the server and the management terminal interact with each other through a local area network or a wide area network constructed by the base station.

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