Safety protection alarm system and method suitable for high-place operation

Abstract

The invention relates to the technical field of operation safety protection, in particular to a safety protection alarm system and method suitable for high-place operation. According to the safety protection alarm system suitable for high-place operation, the hook state sensor is used for detecting the hanging state of double hooks of the safety belt and outputting corresponding switching signals; the signal processing unit is in communication connection with the hook state sensor and is used for receiving and processing the switching signal, judging whether the double hooks of the safety belt are in an unhooking state or not and generating an instruction; and the alarm unit is connected with the signal processing unit and is used for triggering an alarm according to the instruction. Through the cooperation of the hook state sensor and the signal processing unit, the hanging state of the double hooks of the safety belt can be automatically monitored in real time, once the dangerous state that the double hooks are unhooked is detected, operators and field monitoring personnel are prompted through field sound, light and other alarm modes, and the violation behavior that the safety belt is not correctly worn is effectively corrected and restrained.

Description

Technical Field

[0001] This invention relates to the field of work safety protection technology, and in particular to a safety protection alarm system and method suitable for working at heights. Background Technology

[0002] Working at heights is a common practice in industries such as power, construction, and petrochemicals, and it is also a high-risk area for accidents. Statistics show that in recent years, a significant proportion of personal injury accidents in the power industry have been due to falls from height caused by not wearing or properly wearing safety harnesses, making it a key and challenging aspect of on-site safety management.

[0003] Currently, most safety belts on the market are double-hook five-point safety belts, requiring workers to maintain at least one hook in a reliably connected state at all times during operation. However, in actual operations, due to complex working environments, insufficient safety awareness among personnel, or inadequate supervision, violations such as hooks not being engaged, being loosely engaged, or hooks coming loose midway still occur, and there is a lack of effective real-time monitoring and reminder methods.

[0004] While some existing safety belt status monitoring devices exist, most suffer from problems such as complex structure, need for modification of safety belts, high cost, or insufficient reliability, making them difficult to widely apply in actual operations. Furthermore, existing systems generally lack remote monitoring capabilities, failing to achieve unified monitoring and management of multiple work sites and personnel, resulting in low efficiency in safety supervision.

[0005] Therefore, there is an urgent need to develop a high-altitude operation safety protection system that is simple in structure, easy to install, does not affect the use of existing safety belts, and has on-site alarm and remote monitoring functions, so as to improve the safety management level of high-altitude operations and effectively prevent the occurrence of high-altitude fall accidents. Summary of the Invention

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the problems in the prior art, such as the existence of violations such as hooks not being hung, being hung in a false manner, or being unhooked midway due to complex working environment, insufficient safety awareness of personnel, or inadequate supervision, and the lack of effective real-time monitoring and reminder means.

[0007] To address the aforementioned technical problems, this invention provides a safety protection alarm system suitable for working at heights, comprising: The hook status sensor is used to detect the suspension status of the seat belt hooks and output the corresponding switch signal. The signal processing unit is communicatively connected to the hook status sensor, and is used to receive and process the switch signal, determine whether the seat belt double hooks are in the unhooked state, and generate instructions; An alarm unit, connected to the signal processing unit, is used to trigger an alarm according to the instruction.

[0008] Preferably, the signal processing unit further includes a wireless communication module and a processor; the wireless communication module is used to send the suspension status information of the seat belt hooks, the device's own power level, and its working status to a remote server.

[0009] Preferably, the alarm module includes an acoustic alarm and an optical alarm to provide a variety of perceptible on-site alarm forms.

[0010] Preferably, the hook status sensor is fixed to the hook of the seat belt by a non-invasive mechanical clamping structure, which is adaptable to hooks of different specifications without damaging their original structure.

[0011] Preferably, the signal processing unit further includes: a power supply module and a management circuit; the power supply module is used to supply power to the entire device; the management circuit is used to monitor the power status and send low power warning information to a remote server through the wireless communication module when the power is low.

[0012] Preferably, it further includes: A remote server is used to receive and store the hanging status information of the security alarm device; The remote monitoring terminal is connected to the remote server and is used to display the number, location of use, and real-time status of the safety protection alarm device, and to issue a remote alarm when both hooks of the seat belt are in the unhooked state.

[0013] Preferably, the remote monitoring terminal is a WeChat mini program or a mobile APP.

[0014] The present invention also provides a safety protection alarm method suitable for working at heights, comprising: The suspension status of the seatbelt's double hooks is detected by a hook status sensor; When it is determined that both hooks are in the unhooked state, an on-site audible and visual alarm is triggered; and the unhooked status information is uploaded to a remote server via wireless communication. The system receives information from the remote server and triggers a remote alarm so that regulatory personnel can intervene.

[0015] Preferably, the detection of the suspension status of the seatbelt hooks by the hook status sensor includes: The passive switch signals output by the two hook status sensors are continuously monitored. The system is determined to be in a double-hook unhooked state if and only if a combination of signals indicating that both hooks are in the unhooked state is received.

[0016] Preferably, receiving information from the remote server and triggering a remote alarm includes: After the remote monitoring terminal triggers a remote alarm, supervisors can use the operator's number and location information displayed on the terminal to remotely correct violations by the on-site operators via telephone or intercom system.

[0017] The technical solution of the present invention has the following advantages over the prior art: This invention discloses a safety protection alarm system and method suitable for high-altitude operations. Through the cooperation of a hook status sensor and a signal processing unit, it can monitor the suspension status of the safety belt's double hooks in real time and automatically. Once a dangerous state of both hooks being disengaged is detected, it immediately alerts the workers and on-site supervisors through on-site sound and light alarms, effectively correcting and curbing violations of wearing safety belts correctly. The sensor uses a non-invasive mechanical clamping structure such as a clamp to fix it to the existing safety belt hooks, eliminating the need for any destructive modifications such as drilling or welding, thus ensuring the integrity and strength of the original safety belt structure. By integrating a wireless communication module, information such as the on-site safety belt status and device power level is uploaded to a remote server in real time. With the help of monitoring terminals such as WeChat mini-programs or mobile apps, safety supervisors can remotely and in real time monitor the safety status of multiple work sites. In the event of an alarm, they can intervene remotely via telephone or other means immediately, greatly improving the efficiency and coverage of safety supervision. Attached Figure Description

[0018] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein: Figure 1 This is a structural diagram of a safety protection alarm system suitable for high-altitude operations provided by the present invention; Figure 2 This is a flowchart of a safety protection alarm method for working at heights provided by the present invention. Detailed Implementation

[0019] The core of this invention is to provide a safety protection alarm system suitable for high-altitude operations. Through the cooperation of hook status sensors and signal processing units, the suspension status of the safety belt hooks can be monitored in real time and automatically. Once a dangerous state of both hooks being disengaged is detected, the system will immediately remind the workers and on-site supervisors through on-site sound and light alarms, effectively correcting and curbing violations of not wearing safety belts correctly.

[0020] To enable those skilled in the art to better understand the present invention, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are merely 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.

[0021] Please refer to Figure 1. Figure 1 The present invention provides a logic diagram for a safety protection alarm system suitable for working at heights; the specific operation steps are as follows: The hook status sensor is used to detect the suspension status of the double hooks of the seat belt and output a corresponding switch signal. The hook status sensor is fixed to the hook of the seat belt by a non-invasive mechanical clamping structure. The mechanical clamping structure is adaptable to hooks of different specifications and does not damage their original structure. Specifically, the hook status sensor is used to detect the suspension status of the seatbelt's double hooks and output a corresponding switch signal. Its core lies in its non-invasive mechanical clamping structure, which is fixed to the seatbelt hooks. This mechanical clamping structure is preferably an adjustable clamp or a fixture with a locking mechanism. Its design can adapt to the specifications of hooks from different manufacturers and models of seatbelts, varying in thickness, curvature, and other specifications, achieving universal installation. This structure is firmly attached to the hook body through its own mechanical constraints (such as bolt locking, spring clamping, or interference fit), requiring no drilling, welding, gluing, or any other form of permanent modification to the hook during the entire installation process, thus completely preserving the hook's original mechanical strength and safety certification validity. Furthermore, the sensor integrates a status detection mechanism. This mechanism can be a microswitch, a magnetic switch (such as a Hall sensor combined with a magnet), or a reed switch structure. Its working logic is: when the hook is correctly suspended at a secure attachment point, the hook body or a linked triggering component changes its relative position to the status detection mechanism, thereby triggering a change in the switch signal. For example, in one implementation, when the hook is not suspended, a microswitch button is in the pop-up state, outputting a first switching signal (such as an "open" signal); when the hook is suspended, its hook body presses against the button, causing the microswitch to switch to a second switching signal (such as a "closed" signal). This design, combining "non-invasive clamping" with "internal state detection," ensures that the sensor can reliably sense the actual working state of the hook without affecting the safety performance of the seat belt, providing an accurate and reliable signal source for subsequent logical judgments and alarms.

[0022] The signal processing unit is communicatively connected to the hook status sensor, and is used to receive and process the switch signal, determine whether the seat belt double hooks are in the unhooked state, and generate instructions; The signal processing unit further includes a wireless communication module and a processor; the wireless communication module is used to send the suspension status information of the seat belt hooks, the device's own power level, and its working status to a remote server. A power module and a management circuit; the power module is used to supply power to the entire device; the management circuit is used to monitor the power status and send low power warning information to a remote server through the wireless communication module when the power is low. Specifically, the signal processing unit, as the control center of the entire device, establishes a communication connection with the hook status sensors via wired or short-range wireless communication to receive and process the switching signals from the sensors. The core of this unit lies in its processor, which is configured to execute a specific logical judgment algorithm to continuously monitor and analyze the combination of switching signals from the two hook status sensors. Its judgment logic is as follows: a dangerous state is determined and a corresponding alarm command is generated only when a specific signal combination indicating that both hooks are in a disengaged state is continuously received (e.g., both sensors return "disengaged" signals); if at least one hook is in an engaged state (i.e., at least one sensor returns a "closed" signal), a safe state is determined. This design complies with the safety procedure of "always ensuring that at least one hook is reliably connected" in high-altitude operations. The wireless communication module (such as a 4G Cat.1, NB-IoT, or 5G module) is integrated into this unit. Its function is not limited to transmitting simple hook-off alarm signals, but also includes periodically or in real-time uploading the suspension status information of the two hooks (including the independent status of each hook and the timestamp of status changes) to a remote server. At the same time, the module also uploads the device's own operating status (such as power-on, standby, and fault codes) and the real-time power information of the power module. When the battery level is detected to be lower than a preset threshold, it actively sends a low-battery warning message to the remote server so that managers can arrange maintenance in advance and avoid device failure due to power outages. In addition, the signal processing unit can also be configured to manage the device's operating mode (such as normal monitoring mode and energy-saving sleep mode) and control the alarm strategy of the alarm module (for example, after triggering an alarm, if the status does not recover within a set time, the alarm volume or frequency can be upgraded).

[0023] An alarm unit, connected to the signal processing unit, is used to trigger an alarm according to the instruction. The alarm module includes an acoustic alarm and an optical alarm to provide various perceptible forms of on-site alarms.

[0024] A remote server is used to receive and store the hanging status information of the security alarm device; The remote monitoring terminal is connected to the remote server and is used to display the number, location of use and real-time status of the safety protection alarm device, and to issue a remote alarm when both hooks of the safety belt are in the unhooked state. The remote monitoring terminal is a WeChat mini-program or mobile APP, which can remotely monitor the use of safety belts for high-altitude operations throughout the plant. The belts are marked according to their numerical designation and location of use. The system can monitor the status of the safety belts during operations. If a worker's safety belt comes off, in addition to the on-site buzzer alarm, the WeChat mini-program or mobile APP will also sound an alarm. Remote monitoring personnel can then promptly correct the violation by phone.

[0025] This embodiment provides a safety alarm system suitable for high-altitude operations. Through the cooperation of a hook status sensor and a signal processing unit, it can monitor the suspension status of the safety belt's double hooks in real time and automatically. Once a dangerous state of both hooks being disengaged is detected, it immediately alerts the workers and on-site supervisors through on-site sound and light alarms, effectively correcting and curbing violations of wearing safety belts correctly. The sensor uses a non-invasive mechanical clamping structure such as a clamp to fix it to the existing safety belt hooks, eliminating the need for any destructive modifications such as drilling or welding, thus ensuring the integrity and strength of the original safety belt structure. By integrating a wireless communication module, information such as the on-site safety belt status and device power level is uploaded to a remote server in real time. Using monitoring terminals such as WeChat mini-programs or mobile apps, safety supervisors can remotely and in real time monitor the safety status of multiple work sites. In the event of an alarm, they can intervene remotely via telephone or other means immediately, greatly improving the efficiency and coverage of safety supervision.

[0026] like Figure 2 As shown, Figure 2 The present invention provides a safety protection alarm method suitable for high-altitude operations, as detailed below: Step S201: Detect the suspension status of the seatbelt hooks using the hook status sensor; Specifically, the passive switch signals output by the two hook status sensors are continuously monitored, and the system is determined to be in a double-hook unhooked state if and only if a combination of signals indicating that both hooks are in the unhooked state is received.

[0027] Step S202: When it is determined that both hooks are in the unhooked state, trigger the on-site audible and visual alarm; and upload the unhooked state information to the remote server via wireless communication; In one embodiment, alarm command generation and triggering occur as follows: Once the processor in the signal processing unit confirms the dangerous state of "double hook disengagement" through core logic, its firmware immediately executes the alarm subroutine. This subroutine first outputs a pulse-width modulation (PWM) signal of a specific frequency to the GPIO port controlling the acoustic alarm (such as a buzzer), driving the buzzer to emit a high-decibel, intermittent warning sound (e.g., using a "0.5-second sound, 0.5-second pause" loop). Simultaneously, the program outputs an alternating high and low level square wave signal to the GPIO port controlling the optical alarm (such as an LED light), driving the LED light to emit a conspicuous red light at a corresponding frequency (e.g., rapid flashing). The simultaneous sound and light alarms create a strong sensory stimulus, aiming to attract the attention of the operator and nearby monitoring personnel as quickly as possible.

[0028] Alarm data packet framing and transmission: Almost simultaneously with triggering a local alarm, the processor prepares to upload the alarm information via the wireless communication module. The processor packages the following key data into a structured data frame: Device unique identifier: used to accurately locate which device issued the alarm on the server side; Alarm type code: clearly identifies this as a "double hook unhooking" alarm; Alarm trigger timestamp: records the precise time the alarm occurred.

[0029] Instantaneous sensor status: Record the specific signal values ​​of the two hook status sensors at the moment of alarm for verification.

[0030] Global Positioning System (GPS) or base station location data (optional): If the device has an integrated positioning module, it can simultaneously upload the geographical location information at the time of the alarm.

[0031] Remaining battery power: Includes current battery power information for the system to assess the device's health status.

[0032] After the data frame is assembled, the processor sends the data to the wireless communication module through the serial communication interface.

[0033] Wireless transmission and server reception: After receiving a data frame, the wireless communication module immediately activates its network transmission function and sends the data packet to the preset remote server IP address and port through a mobile communication network (such as an NB-IoT network).

[0034] The background service program running on the remote server continuously listens to this port. After receiving a data packet, it parses and verifies it, and writes key information (such as device ID, alarm type, location, and time) into the "alarm event" table of the database.

[0035] Maintaining and deactivating alarm status: At the scene, the audible and visual alarms will continue until any of the following conditions are met: Status recovery: When the system detects that at least one hook has been restored to the hooked state (i.e., the "double hook unhooking" logic condition is no longer met), the processor automatically stops the alarm.

[0036] Manual intervention: Operators or supervisors can temporarily turn off the sound alarm by using the preset "mute" button on the device, but the light alarm may continue until the status is restored.

[0037] When the alarm is cleared due to the recovery of the status, the processor can reframe an "alarm cleared" status message and upload it to the server via wireless communication, thus forming a complete closed-loop record of the alarm event.

[0038] Step S203: Receive information from the remote server and trigger a remote alarm so that supervisory personnel can intervene.

[0039] Specifically, after the remote monitoring terminal triggers a remote alarm, supervisors can remotely correct violations by contacting on-site personnel via telephone or intercom system using the operator number and location information displayed on the terminal.

[0040] This embodiment provides a safety alarm method suitable for high-altitude operations. Through the cooperation of a hook status sensor and a signal processing unit, the suspension status of the safety belt's double hooks can be monitored in real time and automatically. Once a dangerous state of both hooks being disengaged is detected, the system immediately alerts the workers and on-site supervisors through on-site sound and light alarms, effectively correcting and curbing violations of wearing safety belts correctly. The sensor uses a non-invasive mechanical clamping structure such as a clamp to fix it to the existing safety belt hooks, eliminating the need for any destructive modifications such as drilling or welding, thus ensuring the integrity and strength of the original safety belt structure. By integrating a wireless communication module, information such as the on-site safety belt status and device power level is uploaded to a remote server in real time. Using monitoring terminals such as WeChat mini-programs or mobile apps, safety supervisors can remotely and in real time monitor the safety status of multiple work sites. In the event of an alarm, they can intervene remotely via telephone or other means immediately, greatly improving the efficiency and coverage of safety supervision.

[0041] Based on the above embodiments, this embodiment provides a detailed description of a safety protection alarm system suitable for high-altitude operations, as follows: Hook status sensor: In this embodiment, a microswitch is used as the status detection mechanism. The sensor housing is made of high-strength engineering plastic, and its mechanical clamping structure is a miniature stainless steel clamp, which is locked in place by a miniature bolt. During installation, the clamp is clipped onto the upper edge of the hook of the seat belt double hook, and the bolt is tightened to secure it firmly. The entire process requires no modification to the hook.

[0042] When the hook is not suspended, the trigger arm of the micro switch is in the pop-up state, the circuit is broken, and a high-level signal is output (representing "unhooked"). When the hook is suspended on the hook point, the hook body will press down the trigger arm of the micro switch, turning on the circuit and outputting a low-level signal (representing "hooked").

[0043] Signal processing unit: The unit is encapsulated in a lightweight, waterproof housing and can be secured to the back webbing of the seatbelt.

[0044] Processor: A low-power ARM Cortex-M series microcontroller is used as the core processor. It receives switch signals from two hook status sensors via wires.

[0045] Logical judgment: The processor has a built-in judgment logic. It continuously scans the level status of the two input ports. Only when both input ports simultaneously detect a high level (i.e., a "disengagement" signal) for more than a preset debouncing time (such as 500 milliseconds) will it finally determine that the "double hook disengagement" dangerous state has been identified.

[0046] Instruction generation: Once a dangerous state is determined, the processor immediately generates two instructions: send a drive signal to the alarm module; and send an alarm data packet to the wireless communication module via the serial port.

[0047] Wireless communication module: An NB-IoT communication module with a built-in eSIM card is used. This module not only operates when reporting alarms, but also sends a "heartbeat packet" to a remote server at regular intervals (e.g., every 15 minutes). This data packet contains: the device's unique ID, the real-time status of the two hooks (hooked / unhooked), the remaining battery percentage, and a status word indicating whether the module is working properly.

[0048] Power module and management circuit: Powered by a rechargeable lithium polymer battery. The power management circuit is responsible for voltage conversion and battery level monitoring. When the battery voltage is detected to be below 3.3V, the processor will proactively send a "low battery warning" message to the server via the NB-IoT module.

[0049] Alarm module: Integrated into the housing of the signal processing unit are a high-decibel piezoelectric buzzer and a high-brightness LED.

[0050] Upon receiving an alarm command from the processor, the buzzer emits an intermittent sound of approximately 85 decibels, while the LED light flashes red rapidly to achieve a dual alarm of sound and light, attracting the attention of operators and nearby monitoring personnel.

[0051] Specific implementation of the remote monitoring system: Remote server: Deployed on a cloud platform, it is responsible for receiving, storing, and processing all data uploaded by field devices. It maintains a database that records the historical status, alarm events, and power information of each device.

[0052] Remote monitoring terminal: In this embodiment, a WeChat mini-program was developed as a monitoring terminal. After logging into the mini-program, safety supervisors can see an electronic map or list view that clearly displays the numbers and locations of all online devices (such as "#1 Boiler Top Platform"), as well as their real-time status marked with different colors and icons (green checkmark icon represents safety, red exclamation mark icon represents alarm, and gray represents offline).

[0053] When the server receives an alarm message from a device, it will immediately send an alarm notification to the linked supervisor via the WeChat mini-program's internal message push function. The notification includes the operator's ID, specific location, and alarm type ("double hook unhooking").

[0054] Supervisory personnel can click on alarm information to view details and directly click the "Contact by Phone" button on the page to call the operator or on-site supervisor for remote real-time correction, forming a closed-loop management system.

[0055] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A safety protection alarm system suitable for working at heights, characterized in that, include: The hook status sensor is used to detect the suspension status of the seat belt hooks and output the corresponding switch signal. The signal processing unit is communicatively connected to the hook status sensor, and is used to receive and process the switch signal, determine whether the seat belt double hooks are in the unhooked state, and generate instructions; An alarm unit, connected to the signal processing unit, is used to trigger an alarm according to the instruction.

2. The safety protection alarm system for high-altitude operations according to claim 1, characterized in that, The signal processing unit further includes a wireless communication module and a processor; the wireless communication module is used to send the suspension status information of the seat belt hooks, the device's own power level, and its working status to a remote server.

3. The safety protection alarm system for high-altitude operations according to claim 1, characterized in that, The alarm module includes acoustic and optical alarms to provide various perceptible forms of on-site alarms.

4. The safety protection alarm system for high-altitude operations according to claim 1, characterized in that, The hook status sensor is fixed to the hook of the seat belt through a non-invasive mechanical clamping structure. The mechanical clamping structure is adaptable to hooks of different specifications without damaging their original structure.

5. The safety protection alarm system for high-altitude operations according to claim 2, characterized in that, The signal processing unit further includes a power supply module and a management circuit; the power supply module is used to supply power to the entire device; the management circuit is used to monitor the power status and send low power warning information to a remote server through the wireless communication module when the power is low.

6. The safety protection alarm system for high-altitude operations according to claim 1, characterized in that, Also includes: A remote server is used to receive and store the hanging status information of the security alarm device; The remote monitoring terminal is connected to the remote server and is used to display the number, location of use, and real-time status of the safety protection alarm device, and to issue a remote alarm when both hooks of the seat belt are in the unhooked state.

7. The safety protection alarm system for high-altitude operations according to claim 6, characterized in that, The remote monitoring terminal is a WeChat mini program or a mobile APP.

8. A safety protection alarm method suitable for working at heights, characterized in that, include: The suspension status of the seatbelt's double hooks is detected by a hook status sensor; When it is determined that both hooks are in the unhooked state, an on-site audible and visual alarm is triggered; and the unhooked status information is uploaded to a remote server via wireless communication. The system receives information from the remote server and triggers a remote alarm so that regulatory personnel can intervene.

9. The safety protection alarm method for working at heights according to claim 8, characterized in that, The detection of the suspension status of the seatbelt's double hooks via the hook status sensor includes: The passive switch signals output by the two hook status sensors are continuously monitored. The system is determined to be in a double-hook unhooked state if and only if a combination of signals indicating that both hooks are in the unhooked state is received.

10. The safety protection alarm method for working at heights according to claim 8, characterized in that, Receiving information from the remote server and triggering a remote alarm includes: After the remote monitoring terminal triggers a remote alarm, supervisors can use the operator's number and location information displayed on the terminal to remotely correct violations by the on-site operators via telephone or intercom system.

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