A safety protection system for high-altitude operations based on multi-mode fusion positioning

Abstract

This utility model relates to the field of safety protection technology for working at heights, and in particular to a safety protection system for working at heights based on multi-mode fusion positioning. The system includes a multi-mode positioning module and a monitoring sensor module, which are respectively connected to a control module via data cables. The top of the safety helmet shell has a groove, into which the control module is installed. The outer surface of the safety helmet shell has a wire groove, through which the data cable passes for connection between the modules. The bottom of the safety helmet shell has a mounting base, through which the monitoring sensor module is fixedly connected. The multi-mode positioning module is installed to the side of the safety helmet shell via a snap-fit. This utility model utilizes real-time wireless communication between the positioning safety helmet and a UWB positioning base station to transmit data, enabling the monitoring system to continuously obtain the location information of the workers, thus improving the efficiency of emergency rescue.

Description

Technical Field

[0001] This utility model relates to the field of safety protection technology for working at heights, and in particular to a safety protection system for working at heights based on multi-mode fusion positioning. Background Technology

[0002] With the continuous advancement of technology, positioning technology, sensor technology, communication technology, and intelligent management systems have made significant progress. However, their application in the field of safety protection for working at heights is still insufficient and incomplete. On the one hand, although some safety helmets or protective equipment with single-function improvements have appeared on the market, there is a lack of effective integration between the various technologies, making it impossible to form a cohesive system that meets the comprehensive needs of safety protection for working at heights. Most safety helmets only have basic protective functions. However, traditional positioning methods, such as GPS-based positioning systems, have low positioning accuracy in complex indoor and outdoor environments, with errors often reaching several meters or even tens of meters. This cannot meet the need for precise personnel positioning in working at heights, making it difficult for rescuers to quickly determine the exact location of workers in emergencies, delaying rescue opportunities and increasing the severity of accidents.

[0003] On the other hand, enterprises have an increasingly urgent need to improve the safety management level of high-altitude operations, reduce accident risks, and improve production efficiency. In the past, the safety monitoring of high-altitude operations mainly relied on manual inspections or simple video monitoring, which had blind spots and made it difficult to achieve a comprehensive perception of the status of workers. Manual inspections were time-consuming and could not detect safety hazards in real time. Video monitoring could only provide limited visual information and could not accurately monitor and analyze key information such as the location of workers and the status of equipment. Once an abnormal situation occurred, it was difficult to make accurate judgments and effective responses in a timely manner. At present, there is a need for a high-altitude operation safety protection system based on multi-mode fusion positioning. Summary of the Invention

[0004] To address the issue of low positioning accuracy in complex indoor construction environments, this invention provides a safety protection system for high-altitude operations based on multi-mode fusion positioning.

[0005] Firstly, the present invention provides a safety protection system for high-altitude operations based on multi-mode fusion positioning, which adopts the following technical solution:

[0006] A safety protection system for working at heights based on multi-mode fusion positioning includes:

[0007] The positioning safety helmet, consisting of a multi-mode positioning module, a monitoring sensor module, a control module, and a safety helmet shell, and a UWB positioning base station, wherein the multi-mode positioning module of the positioning safety helmet is connected to the UWB positioning base station via wireless communication, and the UWB positioning base station is connected to a terminal server via wireless transmission;

[0008] The multi-mode positioning module and the monitoring sensor module are connected to the control module via data cables. The top of the helmet shell has a groove, and the control module is installed inside the groove. The outer surface of the helmet shell has a wire groove, through which the data cable passes to connect the modules. The bottom of the helmet shell has a mounting base, and the monitoring sensor module is fixedly connected to the helmet shell via the mounting base. The multi-mode positioning module is installed to the side of the helmet shell via a snap fastener.

[0009] Furthermore, the multi-mode positioning module includes a UWB positioning chip and a gain antenna. The gain antenna is connected to the UWB positioning chip via a feed line, and the UWB positioning chip is connected to the UWB positioning base station via the gain antenna.

[0010] Furthermore, the UWB positioning base station includes a shell, an antenna, a radio frequency circuit, a communication interface, and an external power supply. The antenna is installed on both sides of the shell and connected to the radio frequency circuit. The radio frequency circuit is connected to the communication interface for data transmission. The external power supply is connected to the radio frequency circuit, the communication interface, and the antenna respectively.

[0011] Furthermore, the radio frequency circuit includes a UWB radio frequency chip, a power amplifier, a low noise amplifier, and a filter. The UWB radio frequency chip is connected to the power amplifier and the low noise amplifier, respectively. The power amplifier is connected to the filter, and both the filter and the low noise amplifier are connected to the antenna via transmission lines.

[0012] Furthermore, a protective circuit board is provided on the outside of the UWB positioning chip, and fixing clips matching the buckle are provided on both sides of the protective circuit board. The protective circuit board is inserted into the buckle through the fixing clips, and shock-absorbing pads are provided on the contact surface between the protective circuit board and the buckle.

[0013] Furthermore, the monitoring sensor module includes a temperature sensor and a gas concentration sensor. The gas concentration sensor is mounted to the side of the helmet shell near the breathing area via a mounting bracket, and the temperature sensor is mounted to the top inside the helmet shell via a thermally conductive silicone sheet.

[0014] Furthermore, the mounting base includes an air inlet and an air outlet, which are respectively located on corresponding sides of the mounting base and arranged linearly.

[0015] Furthermore, the control module includes a microprocessor, a memory chip, and an SPI interface. The microprocessor is connected to the memory chip via a parallel interface, and the microprocessor is connected to a temperature sensor, a body concentration sensor, and a UWB positioning chip via the SPI interface.

[0016] Furthermore, the microprocessor, memory chip, and SPI interface are all soldered to the same circuit board, which has threaded holes on its edge. The circuit board is mounted to a groove at the top of the helmet shell inside by screw posts.

[0017] Furthermore, the rear end of the helmet shell is provided with a sealed battery compartment, and one side of the sealed battery compartment is provided with a charging interface with a waterproof and dustproof plug. The sealed battery compartment contains a storage battery.

[0018] In summary, this utility model has the following beneficial technical effects:

[0019] 1. This utility model utilizes the positioning safety helmet to transmit data in real time via wireless communication with the UWB positioning base station, enabling the monitoring system to continuously obtain the location information of the workers. In the event of an emergency, it can issue an alarm signal, improving the efficiency of emergency rescue and providing stronger protection for the life safety of the workers.

[0020] 2. The temperature sensor of this utility model is tightly attached to the top of the inside of the safety helmet shell through a thermally conductive silicone sheet. It can quickly and accurately sense the temperature changes of the surrounding environment of the operator. In high-temperature environments, such as smelting workshops and outdoor operations in summer, it can monitor the high temperature in time and prevent the operator from suffering heatstroke due to prolonged exposure to high temperatures. In low-temperature environments, such as outdoor high-altitude operations in winter, it can also detect the risk of low temperature in time and remind the operator to take warming measures to avoid frostbite and other situations.

[0021] 3. This utility model integrates multi-source information such as the location data of the safety helmet, environmental data from the monitoring sensor module, and status data of the protective equipment. Through data fusion technology, it comprehensively analyzes and processes data from different modules to form a comprehensive and accurate operational scenario map on the terminal server. Managers can intuitively view the location distribution of workers, environmental parameters, and the usage status of protective equipment on the monitoring platform, achieving comprehensive real-time monitoring of high-altitude operations and providing richer and more comprehensive decision-making basis for safety management. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall connection of a high-altitude operation safety protection system based on multi-mode fusion positioning according to an embodiment of this utility model.

[0023] Figure 2 This is a structural schematic diagram of the positioning safety helmet according to an embodiment of the present utility model.

[0024] Figure 3 This is a bottom view of the positioning safety helmet according to an embodiment of the present invention.

[0025] The components include: 1. cable tray; 2. clip; 3. sealed battery compartment; 4. safety helmet shell; and 5. mounting base. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] Example 1

[0028] Reference Figure 1 This embodiment of a height-climbing operation safety protection system based on multi-mode fusion positioning includes:

[0029] The positioning safety helmet, consisting of a multi-mode positioning module, a monitoring sensor module, a control module, and a safety helmet shell, and a UWB positioning base station, wherein the multi-mode positioning module of the positioning safety helmet is connected to the UWB positioning base station via wireless communication;

[0030] The multi-mode positioning module and the monitoring sensor module are connected to the control module via data cables. The top of the helmet shell has a groove, and the control module is installed inside the groove. The outer surface of the helmet shell has a wire groove, through which the data cable passes to connect the modules. The bottom of the helmet shell has a mounting base, and the monitoring sensor module is fixedly connected to the helmet shell via the mounting base. The multi-mode positioning module is installed to the side of the helmet shell via a snap fastener.

[0031] Specifically,

[0032] like Figure 2 , Figure 3 As shown, the positioning safety helmet is made of high-strength engineering plastic polycarbonate (PC), which has good impact resistance and conforms to GB2811-2019 standard. Its inner top has a groove for installing the control module circuit board. The groove surface is smooth to ensure the circuit board is installed flat. The top of the outer surface of the helmet shell 4 has a wire groove with a width of 4mm and a depth of 3mm. The wire groove 1 is curved to accommodate the connection needs between different modules and avoid data cable crossing and wear. The rear sealed battery compartment 3 is sealed with a rubber sealing ring and a threaded cap. The charging interface is located on one side of the battery compartment. The waterproof and dustproof plug is made of silicone and fits tightly to the interface to prevent dust and moisture from entering. The sealed battery compartment 3 uses a 1900mAh lithium-ion polymer battery. Finally, a buckle 2 for fixing the multi-mode positioning module is installed on one side of the helmet shell. The multi-mode positioning module consists of two core components: a UWB positioning chip and a gain antenna. The UWB positioning chip, as the key to data processing and signal generation, uses ultra-wideband positioning technology and has high-precision time measurement and signal analysis capabilities, enabling it to accurately calculate its own position information in complex electromagnetic environments.

[0033] like Figure 1 As shown, when the worker correctly puts on the positioning safety helmet, the multi-mode positioning module is activated. The UWB positioning chip, based on its built-in clock synchronization mechanism, interacts with the surrounding UWB positioning base stations using ultra-wideband pulse signals. The radio frequency circuit inside the base station is responsible for the generation, modulation, transmission, and reception of UWB signals. The radio frequency circuit uses a UWB radio frequency chip and calculates its three-dimensional spatial position relative to the base station by measuring the signal time of flight and using the TDOA positioning algorithm. This position data is transmitted to the UWB positioning base station in real time through a gain antenna in a specific data frame format at a frequency of several times per second. The UWB positioning chip used is the CC1310 chip, which has high integration and low power consumption and high-precision ranging capabilities. The gain antenna is a microstrip patch antenna with a gain of 6dBi, connected to the UWB positioning chip through a feeder with a characteristic impedance of 50 ohms. The feeder is approximately 15cm long and is wrapped with a shielding layer to reduce signal interference.

[0034] For radio frequency (RF) circuits, the signal output terminal of the UWB RF chip is connected to the input terminal of the power amplifier to transmit the weak RF signal generated by the UWB RF chip to the power amplifier for power amplification. During connection, transmission lines such as microstrip lines or coaxial cables are used to ensure efficient and stable signal transmission. The characteristic impedance of the transmission line is matched with the output impedance of the UWB RF chip and the input impedance of the power amplifier. The RF signal output from the UWB RF chip retains its frequency and modulation characteristics, only its signal strength is weaker. After receiving the signal, the power amplifier amplifies it using its internal amplification circuit, increasing the signal power level to meet the needs of long-distance transmission or wider coverage. The output of the power amplifier is connected to the input of the filter. The amplified radio frequency signal directly enters the filter, which filters the input signal, removing noise, harmonics, and other unwanted frequency components, allowing only signals in specific frequency bands (such as those required for UWB positioning) to pass through. The output of the filter is connected to the antenna's feed point via a coaxial cable or microstrip line, transmitting the filtered, clean radio frequency signal to the antenna for transmission. The antenna receives the radio frequency signal, converts it into electromagnetic waves, and radiates it into space, enabling wireless communication with devices such as positioning helmets. When the antenna receives the weak radio frequency signal from the positioning helmet or similar device, it first transmits the signal to the input of the low-noise amplifier. The connection between the antenna and the low-noise amplifier also uses a suitable transmission line, such as a coaxial cable, whose characteristic impedance matches the antenna's output impedance and the low-noise amplifier's input impedance to ensure efficient signal transmission.The output of the low-noise amplifier is connected to the signal input of the UWB RF chip, transmitting the amplified, weak RF signal to the UWB. The radio frequency (RF) chip performs further processing, such as demodulation and decoding, to extract useful positioning information and other data. During connection, it is crucial to ensure the integrity and accuracy of signal transmission and avoid signal distortion or attenuation. The UWB RF chip processes the received signal accordingly and calculates the location information of devices such as the safety helmet based on the positioning algorithm. After receiving the UWB positioning signal from the safety helmet and other devices through its internal RF circuitry and antenna, the UWB positioning base station uses high-precision clock synchronization technology and the Time Difference of Arrival (TDOA) algorithm to calculate the location coordinates and other relevant positioning data of the safety helmet. This positioning data includes three-dimensional coordinates (such as longitude, latitude, and altitude), positioning timestamps, device identification, and other information. The positioning data is encapsulated into IP packets, which contain the source IP address (i.e., the IP address of the UWB positioning base station), the destination IP address (the IP address of the terminal server), the data content (positioning data), and the port number. The port number is used to identify the application or service. Finally, the data packets are transmitted through the 4G transmission network to ensure that the data can be accurately transmitted to the corresponding application on the terminal server for processing.

[0035] Simultaneously, the monitoring sensor module is activated. The thermistor of the temperature sensor changes its resistance value as the temperature inside the safety helmet changes. The built-in high-precision ADC conversion circuit converts the resistance change into a digital temperature signal. The electrochemical electrode in the gas concentration sensor reacts with the surrounding gas to generate an electrical signal. After internal amplification, filtering, and signal conditioning circuitry, it is converted into a corresponding digital value of gas concentration. This environmental data is also transmitted to the control module in a standard data format via a data cable. The gas concentration sensor is placed in the mounting slot of the mounting base, and then the sensor is tightly connected to the mounting base 5 using screws, ensuring a secure connection between the sensor and the mounting base 5. The bonding between the components is firm and reliable. The mounting base 5 is fixed to the side of the safety helmet shell near the breathing area by screws. In order to enable the gas concentration sensor to detect the concentration of harmful gases near the breathing area of ​​the operator in a timely and accurate manner, the mounting base 5 is designed with an air inlet and an air outlet. The air inlet and air outlet are located on two corresponding sides of the mounting base and are arranged linearly. The diameter of the air inlet is generally between 0.5-1.5mm. This diameter ensures that sufficient airflow enters the sensor for detection, while preventing larger particles of dust and impurities from entering the sensor and avoiding damage to the sensor's detection element or affecting its detection accuracy.

[0036] The microprocessor uses an STM32F429 chip. It receives data from the multi-mode positioning module and monitoring sensor module. On one hand, it rapidly reads data via the SPI interface using interrupt-driven or polling methods for real-time analysis, determining potential safety hazards such as abnormal deviations from the designated work area, temperatures exceeding the human comfort range, or harmful gas concentrations exceeding safety thresholds. On the other hand, it stores key data in a file system format on a storage chip via a parallel interface for easy retrieval and analysis. Following a preset network transmission protocol, it transmits complete data packets containing detailed location, environmental parameters, and alarm information to the terminal server via a wireless transmission link (first connecting the safety helmet to the base station, then via a 4G connection between the base station and the terminal server) for remote monitoring and decision-making by monitoring personnel.

[0037] Based on the terrain, building layout, and activity range of the workers at the elevated work site, professional wireless signal simulation software is used for simulation analysis to determine the installation location of the UWB positioning base station. This ensures that the base station signal provides uniform and stable coverage throughout the entire work area without any dead zones. After installation, professional signal testing instruments are used to fully debug the base station, calibrating parameters such as signal strength and frequency to ensure perfect compatibility with the multi-mode positioning module of the positioning safety helmet and establish a reliable communication link.

[0038] Upon entering the work area, the multi-mode positioning module and monitoring sensor module automatically activate, continuously collecting location and environmental data. During operation, the microprocessor polls the data from each sensor several times per second. If any abnormal situation is detected, such as a worker approaching a dangerous edge area causing their position to deviate from the predetermined trajectory, a rapid increase in the temperature inside the safety helmet in a high-temperature environment, or a sudden leak of harmful gases in the work area causing the gas concentration to exceed the standard, the data is transmitted to the terminal server for alarm notification. At the same time, the control module packages detailed alarm information and related data and transmits it to the terminal server wirelessly. The server software pops up an alarm window in real time, displaying detailed information about the worker, their location coordinates, environmental parameters, etc., so that monitoring personnel can take immediate action to respond to the situation, such as rescue and evacuation command.

[0039] On the terminal server, after all data transmission for this operation is completed, data analysis software is used to conduct in-depth analysis of various data records during the operation, including statistics on the activity trajectories of operators, trends in environmental parameter changes, and frequency of alarm events, generating detailed operation reports to provide strong data support for subsequent operation safety management. If performance problems are found in safety helmets or base stations through data analysis or on-site feedback, professional technicians are promptly arranged to repair, maintain, and replace faulty components to ensure that the entire system is always in good operating condition.

[0040] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A safety protection system for high-altitude operations based on multi-mode fusion positioning, characterized in that, include: The positioning safety helmet, consisting of a multi-mode positioning module, a monitoring sensor module, a control module, and a safety helmet shell, and a UWB positioning base station, wherein the multi-mode positioning module of the positioning safety helmet is connected to the UWB positioning base station via wireless communication, and the UWB positioning base station is connected to a terminal server via wireless transmission; The multi-mode positioning module and the monitoring sensor module are connected to the control module via data cables. The top of the helmet shell has a groove, and the control module is installed inside the groove. The outer surface of the helmet shell has a wire groove, through which the data cable passes to connect the modules. The bottom of the helmet shell has a mounting base, and the monitoring sensor module is fixedly connected to the helmet shell via the mounting base. The multi-mode positioning module is installed to the side of the helmet shell via a snap fastener.

2. The high-altitude operation safety protection system based on multi-mode fusion positioning according to claim 1, characterized in that, The multi-mode positioning module includes a UWB positioning chip and a gain antenna. The gain antenna is connected to the UWB positioning chip via a feed line, and the UWB positioning chip is connected to the UWB positioning base station via the gain antenna.

3. The high-altitude operation safety protection system based on multi-mode fusion positioning according to claim 2, characterized in that, The UWB positioning base station includes a shell, an antenna, a radio frequency circuit, a communication interface, and an external power supply. The antenna is installed on both sides of the shell and connected to the radio frequency circuit. The radio frequency circuit is connected to the communication interface for data transmission. The external power supply is connected to the radio frequency circuit, the communication interface, and the antenna.

4. The high-altitude operation safety protection system based on multi-mode fusion positioning according to claim 3, characterized in that, The radio frequency circuit includes a UWB radio frequency chip, a power amplifier, a low noise amplifier, and a filter. The UWB radio frequency chip is connected to the power amplifier and the low noise amplifier, respectively. The power amplifier is connected to the filter, and both the filter and the low noise amplifier are connected to the antenna via transmission lines.

5. A height-climbing operation safety protection system based on multi-mode fusion positioning according to claim 3, characterized in that, The UWB positioning chip has a protective circuit board on its outer side. The protective circuit board has fixing clips on both sides that match the buckle. The protective circuit board is inserted into the buckle through the fixing clips, and the contact surface between the protective circuit board and the buckle is provided with shock-absorbing pads.

6. The high-altitude operation safety protection system based on multi-mode fusion positioning according to claim 1, characterized in that, The monitoring sensor module includes a temperature sensor and a gas concentration sensor. The gas concentration sensor is mounted to the side of the helmet shell near the breathing area via a mounting bracket, and the temperature sensor is mounted to the top inside the helmet shell via a thermally conductive silicone sheet.

7. A height-reaching operation safety protection system based on multi-mode fusion positioning according to claim 6, characterized in that, The mounting base includes an air inlet and an air outlet, which are respectively located on the corresponding sides of the mounting base and arranged linearly.

8. A safety protection system for high-altitude operations based on multi-mode fusion positioning according to claim 7, characterized in that, The control module includes a microprocessor, a memory chip, and an SPI interface. The microprocessor is connected to the memory chip via a parallel interface, and the microprocessor is connected to a temperature sensor, a body concentration sensor, and a UWB positioning chip via the SPI interface.

9. A safety protection system for high-altitude operations based on multi-mode fusion positioning according to claim 8, characterized in that, The microprocessor, memory chip, and SPI interface are all soldered to the same circuit board. The circuit board has threaded holes on its edge and is mounted to a groove at the top of the helmet shell inside by screw posts.

10. A safety protection system for high-altitude operations based on multi-mode fusion positioning according to claim 1, characterized in that, The rear end of the helmet shell is provided with a sealed battery compartment, and one side of the sealed battery compartment is provided with a charging interface with a waterproof and dustproof plug. The sealed battery compartment contains a storage battery.

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