LoRa-based radiation measurement intelligent safety helmet

Abstract

The invention discloses a LoRa-based radiation measurement intelligent safety helmet, relates to the technical field of radiation safety protection and Internet of Things, and is especially suitable for a radiation monitoring environment. The safety helmet comprises a helmet shell, a helmet brim and an external functional layer, a main control PCB and a power supply lithium battery are arranged on the left side and the right side of a helmet body respectively, and an MSND radiation measurement sensor module and a positioning ceramic antenna are integrated in the helmet body. The main control PCB adopts an STM32H750VBT6 high-performance chip, cooperates with a LoRa module, an MSND radiation measurement sensor, a temperature and humidity sensor and a Beidou / GPS dual-mode positioning module, and realizes ultra-long-distance low-power-consumption data transmission through a LoRa ad hoc network. Through a LoRa relay mechanism, the data packet loss rate in a complex environment is close to 0, the problems that a traditional safety helmet is short in communication distance, poor in endurance and heavy to wear are solved, the safety helmet is suitable for high-risk scenes such as radiation monitoring, electric power, electricity and buildings, and the personnel safety supervision efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of radiation safety protection equipment, in particular to an intelligent safety helmet combining Internet of Things communication technology and neutron / γ radiation measurement function, which is suitable for high-risk operation scenes such as radiation monitoring, electric power, electricity, building, etc., and aims to improve the safety protection ability and operation management efficiency of operation personnel, especially the monitoring of neutron / γ radiation environment. BACKGROUND

[0002] With the continuous expansion of industrial production and construction scale, the safety risks faced by employees are increasingly complex. Especially in the fields of nuclear power, use or handling of radioactive substances, etc., the traditional safety helmet only provides physical protection, but lacks the monitoring and early warning ability of harmful environmental factors such as neutron / γ radiation. Although the existing intelligent safety helmet integrates temperature and humidity sensors, positioning modules and other functions, it often does not have the function of real-time monitoring of neutron / γ radiation, and cannot cope with complex working environments, affecting the safety protection and on-site management of operation personnel.

[0003] Micro-structured semiconductor neutron detector (MSND) has a wide application prospect in the field of neutron detection due to its miniaturization, high efficiency, low power consumption and other advantages. The intelligent safety helmet combining MSND technology and LoRa communication technology emerges as the times require, which can monitor neutron and γ radiation in real time and transmit data to the remote control center through the LoRa wireless module. SUMMARY

[0004] The purpose of the present application is to provide a LoRa-based neutron / γ radiation measurement intelligent safety helmet to solve the problem that the traditional safety helmet does not have the function of radiation measurement. The safety helmet integrates micro-structured semiconductor neutron detector (MSND), which can efficiently detect the intensity of neutron / γ radiation in the environment and transmit data remotely through the LoRa module. The main control chip uses STM32H750VBT6, which integrates LoRa communication, MSND signal acquisition, temperature and humidity monitoring and other modules, and can collect and process data in real time to ensure the safety of operation personnel.

[0005] The technical solution of the present application is as follows:

[0006] The intelligent safety helmet provided by the present application adopts LoRa communication technology, integrates MSND radiation sensor, temperature and humidity module, positioning module and other sensors, and transmits data through LoRa ad hoc network. The safety helmet includes a safety helmet shell, a brim, an external protruding layer and an internal buffer layer, the external protruding layer is embedded with a main control PCB board, a power lithium battery, an MSND radiation sensor, a positioning module and a LoRa communication module; each module is powered by a low-power lithium battery to ensure the stability and durability of the safety helmet during long-term use.

[0007] In some embodiments, the positioning module uses an ATGM336H-5N31 chip, paired with a 25×25mm ceramic active antenna, with a positioning accuracy of ≤2.5 meters and a built-in XH414 farad capacitor to achieve fast hot start.

[0008] In some embodiments, the main control chip uses the STM32H750VBT6 high-performance microcontroller, with an operating temperature range of -40°C to 85°C. It has higher processing power and larger memory to meet the needs of complex sensor data processing. It connects to the AHT30 temperature and humidity sensor (measurement accuracy of ±0.5°C and ±3%RH) via the I2C interface.

[0009] In some embodiments, the LoRa module uses the DX-LR01 communication module (based on the ASR6601 chip), with an operating frequency band of 433-475MHz, a maximum transmit power of 22dBm, supports transparent transmission and air wake-up mode, and a communication distance of up to 5km (line-of-sight environment).

[0010] In some embodiments, the MSND neutron radiation sensor is integrated into a safety helmet, and the voltage signal emitted by the sensor is collected by the ADC module of the STM32H750VBT6 main control chip to monitor the surrounding neutron and gamma radiation intensity in real time.

[0011] In some embodiments, the power supply lithium battery has a capacity of 2400mAh, an output voltage of 5V, and supports continuous operation for more than 24 hours. The charging port is hidden on the back of the cap body and has a waterproof and dustproof design.

[0012] In some embodiments, the main control PCB board has a size of 5.5 cm × 3.6 cm, adopts a three-layer stacked layout, integrates a positioning module, a temperature and humidity sensor, and a LoRa module, and has an overall thickness of ≤15 mm, reducing the height of the local protrusion of the helmet.

[0013] In some embodiments, the PCB board package is made of ADS engineering plastic with a temperature resistance range of -40°C to 85°C, and the surface is sprayed with three-conformal paint to resist dust and humid environment.

[0014] In some embodiments, a physical button is provided on the left side of the helmet for forcing an alarm.

[0015] In some embodiments, the memory uses an AT24C128M EEPROM chip to store positioning data that has not been uploaded, and is automatically cleared after the LoRa module successfully sends it.

[0016] In some embodiments, the positioning ceramic antenna is fixed to the top of the cap body through an ABS bracket, and a silicone buffer layer is filled between the bracket and the cap shell to prevent damage from external force squeezing.

[0017] In some embodiments, the LoRa module communicates with the master chip through a USART serial port, configures AT instructions (such as AT+MODE0 to set transparent transmission), and realizes low-power data relay.

[0018] Advantages:

[0019] The application realizes real-time monitoring of the neutron radiation intensity in the environment by integrating a microstructure semiconductor neutron detector (MSND), and combines a STM32H750VBT6 high-performance master control chip to efficiently process sensor data and realize long-distance and low-power data transmission through a LoRa wireless communication module. The MSND sensor has the advantages of miniaturization, low power consumption, and high efficiency, and is suitable for wearable radiation monitoring equipment. Through LoRa self-organizing network technology, data can be effectively transmitted through a multi-node relay mechanism in a complex construction site environment, avoiding data loss in traditional schemes when the signal is blocked. The safety helmet is compact in design, and the weight is controlled within 350g, and a 2400mAh lithium battery is used to support all-weather use, optimizing the wearing comfort and meeting the long-time operation requirement. In addition, the anti-interference communication technology and high-precision positioning module are used, which further improves the safety protection ability of the workers and greatly improves the safety monitoring efficiency of the construction site. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a left side structure schematic diagram of the application;

[0021] Figure 2 is a right side structure schematic diagram of the application;

[0022] Figure 3 is a bottom structure schematic diagram of the application;

[0023] Figure 4 is a working principle schematic diagram of the application;

[0024] In the figure:

[0025] 1-hat shell, 2-hat brim, 3-button assembly, 4-PCB board, 5-LoRa antenna, 6-battery, 7-positioning antenna, 8-battery power supply and charging cable, 9-first alarm button, 10-first LoRa wireless module, 11-first STM32L series main control, 12-first positioning module, 13-first data storage, 14-first temperature and humidity module, 15-first battery, 16-first smart safety helmet, 17-second LoRa wireless module, 18-second temperature and humidity module, 19-second battery, 20-second smart safety helmet, 21-second STM32L series main control, 22-second positioning module, 23-second data storage, 24-second alarm button, 25-receiving terminal, 26-control center, 27-first MSND module, 28-second MSND module DETAILED DESCRIPTION

[0026] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. However, the following embodiments are intended only to explain the present invention, and the scope of protection of the present invention should include the entire contents of the claims. Moreover, through the description of the following embodiments, those skilled in the art can fully implement the entire contents of the claims of the present invention.

[0027] Example:

[0028] like Figure 1-3 As shown, an embodiment of the present invention discloses a LoRa-based smart helmet, comprising a helmet shell 1, a brim 2 connected to the front edge of the helmet shell 1, a button assembly 3 and a protruding piece for placing a PCB board 4 and a LoRa antenna 5 on the left side of the helmet shell 1, a protruding piece for placing a battery 6 on the right side of the helmet shell, a positioning antenna 7 provided in the middle of the helmet shell for connecting to a positioning module on the PCB board, and a battery power supply and charging cable 8 provided at the rear of the helmet shell.

[0029] When the worker puts on the safety helmet, he or she can actively communicate with the control center through the button assembly 3 .

[0030] The battery power supply and charging cable 8 consists of two wires, one wire is a USB-A male port to USB-C cable, the USB-C cable is connected to the PCB board 4, and the other wire is a USB-A female port directly connected to the battery. When the USB-A female port of the battery is connected to the USB-A male port of the other wire, the system can start working. The battery charging port is also a USB-A male port.

[0031] like Figure 4As shown, this figure shows the communication principle between the receiving terminal and different smart helmets (only the first smart helmet and the second smart helmet are shown in the figure), wherein the first smart helmet 16 on the left is provided with a first alarm button 9, a first LoRa wireless module 10, a first STM32L series main control 11, a first positioning module 12, a first data storage 13, a first temperature and humidity module 14, a first battery 15 and a first MSND module 27; the second smart helmet 20 on the right is provided with a second alarm button 24, a second LoRa wireless module 17, a second STM32L series main control 21, a second positioning module 22, a second data storage 23, a second temperature and humidity module 18, a second battery 19 and a second MSND module 28.

[0032] Data collection workflow (see attached) Figure 4 Take the first smart helmet 16 on the left side as an example):

[0033] After the battery power supply and charging cable 8 are connected, the first temperature and humidity module 14, the first positioning module 12, and the first MSND module 27 begin data collection. After the first temperature and humidity module 14 collects data, the corresponding data is read by the first STM32L series main control 11. After the first MSND module 27 collects the neutron radiation signal, it transmits the voltage signal to the main control chip via the ADC module. The main control chip processes the signal and sends the processed data to the control center via the first LoRa wireless module 10. After obtaining the location data, the first positioning module 12 first stores the data in the first data memory 13 and then sends it to the first STM32L series main control 11.

[0034] Once all sensor data is collected, the first STM32L series master controller 11 transmits all data via the first LoRa wireless module 10 to each surrounding LoRa wireless module. In a manner similar to broadcasting, the data at the receiving end is forwarded once, and all LoRa modules in the smart helmets collect and forward their respective data, ensuring data transmission integrity. Repeated forwarding during data transmission ensures accurate data transmission in complex environments. Ultimately, the control center 26 of the receiving terminal 25 receives this data and displays it on the host computer platform.

[0035] Alarm workflow:

[0036] After the staff presses the button assembly 3 on the left side of the cap shell 1, an electric signal can be sent to the first STM32H series master control 11, and after the first STM32H series master control 11 receives the signal, the data of the first positioning module 12 and the alarm data are packaged and sent to other LoRa wireless modules through the first LoRa wireless module 10. Other LoRa wireless modules will transfer data until the data is received by the receiving terminal 25, and the data is sent to the control center 26, and finally the alarm information and positioning data are displayed on the host computer platform.

[0037] The technical scheme provided by the embodiment of the application has the beneficial effects that:

[0038] (1) Real-time radiation monitoring: By integrating the MSND neutron radiation sensor, the application can monitor the neutron radiation intensity in the environment in real time and provide efficient and accurate radiation data. The MSND sensor has the advantages of miniaturization, low power consumption and high efficiency, making it suitable for long-term and high-precision radiation monitoring.

[0039] (2) Efficient data processing and transmission: The STM32H750VBT6 high-performance master control chip can efficiently process sensor data and realize real-time data transmission over long distances and low power consumption through the LoRa communication module, ensuring the reliability and timeliness of data in complex environments.

[0040] (3) Multi-node relay mechanism: In severely blocked construction site environments (such as underground tunnels), the multi-node relay mechanism can reduce the data packet loss rate from 100% in traditional schemes to 0%, ensuring the real-time and stability of data transmission.

[0041] (4) Lightweight design and comfort: The overall hat weight is controlled within 350g, which is 25% lighter than similar products (450-500g), significantly improving the comfort of wearing, and is suitable for long-term and high-intensity work environments.

[0042] (5) Low cost and high performance: No need to pay for cellular network service fees, reducing operating costs, using LoRa wireless communication technology, stable performance and strong anti-interference ability, suitable for various complex environments.

[0043] The above is only a specific embodiment of the present application, which enables those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. A LoRa-based radiation measurement smart helmet, characterized by: Including hat shell, brim and external protruding layer; The main control PCB board and the physical alarm button are arranged on the left side of the cap shell, and the power supply lithium battery is arranged on the right side; The ceramic antenna is fixed in the center of the cap shell, and the battery power supply and charging cable are led out from the back of the cap shell; The main control PCB board integrates the main control chip, LoRa module, MSND radiation sensor, temperature and humidity module and positioning module; Each module is powered by a lithium battery and achieves ultra-long-distance data transmission through the LoRa self-organizing network.

2. The LoRa-based radiation measurement smart helmet according to claim 1, characterized in that: The MSND radiation sensor monitors the surrounding neutron / gamma radiation intensity in real time. Its voltage signal is collected and processed by the ADC module of the main control chip, and the data is uploaded via the LoRa module.

3. The LoRa-based radiation measurement smart helmet according to claim 1, characterized in that: The LoRa module supports a multi-node relay mechanism. Each module only forwards the same data once, and the receiving end does not forward it. The communication distance is ≥5km and the packet loss rate is close to 0.

4. The LoRa-based radiation measurement smart helmet according to claim 1, characterized in that: The power supply lithium battery has a capacity of no less than 2400mAh, an output voltage of 5V, and supports 24 hours of continuous operation; the charging interface is USB-C type, hidden on the back of the cap shell and has a waterproof and dustproof design.

5. The LoRa-based radiation measurement smart helmet according to claim 1, characterized in that: The physical alarm button is located on the left side of the cap shell. After being triggered, the main control chip packages the positioning data and alarm signal and transmits it back to the control center via the LoRa module.

6. The LoRa-based radiation measurement smart helmet according to claim 1, characterized in that: The positioning module uses the ATGM336H-5N31 chip, paired with a 25×25mm ceramic active antenna, with a positioning accuracy of ≤2.5 meters and a built-in XH414 farad capacitor to achieve hot start.

7. The LoRa-based radiation measurement smart helmet according to claim 1, characterized in that: The main control chip is STM32H750VBT6, with an operating temperature range of -40°C to 85°C. It is connected to the AHT30 temperature and humidity module via the I²C interface, with a measurement accuracy of ±0.5°C and ±3%RH.

8. The LoRa-based radiation measurement smart helmet according to claim 1, characterized in that: The main control PCB board has a size of 5.5cm×3.6cm, adopts a three-layer stacking layout, is sprayed with three-proof paint on the surface, and has an overall thickness of ≤15mm.

9. The LoRa-based radiation measurement smart helmet according to claim 1, characterized in that: The total weight of the cap shell, brim and internal components is ≤350g. The positioning ceramic antenna is fixed by an ABS bracket, and a silicone buffer layer is filled between the bracket and the cap shell.

10. The LoRa-based radiation measurement smart helmet according to claim 1, characterized in that: The LoRa module is based on the ASR6601 chip, operates in the 433-475MHz frequency band, has a maximum transmit power of 22dBm, and supports transparent transmission and air wake-up modes.

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