High-altitude operation safety belt monitoring system based on MCU

Abstract

The invention discloses a high-altitude operation safety belt monitoring system based on an MCU. The system comprises an MCU control cabinet, and a pressure sensing module, an image identification module and an infrared integration module which are in wireless communication connection with the MCU control cabinet. The pressure sensing module is used for collecting internal pressure data of the safety belt buckle and synchronously executing sound-light alarm; the image recognition module is arranged on the detection door and used for collecting image data of workers and synchronously executing sound-light alarm; the infrared integrated module is arranged on the high-altitude operation protection frame and used for collecting infrared digital signals and identity information of workers; and the MCU control case is used for acquiring a safety belt monitoring result according to the internal pressure data of the safety belt buckle and the image data of the worker, and judging whether to generate a sound-light alarm signal according to the safety belt monitoring result. The problems that the monitoring mode is single, the coverage range is small, alarming is not timely, and an entity device is large in size and inconvenient to carry are solved.

Description

Technical Field

[0001] The invention relates to the field of high-altitude work safety belt monitoring, and in particular to a high-altitude work safety belt monitoring system based on MCU. Background Art

[0002] Aerial work safety belts are protective equipment for workers during aerial work, which can effectively protect workers from falling and slipping, but in actual work, workers often miss or fail to buckle their safety belts, which results in the safety belts not being able to play their due role when accidents occur. The existing aerial work safety belt monitoring system can monitor the safety belts of workers based on image monitoring data, but it has problems such as a single monitoring method, a small coverage area, untimely alarms, and a large physical device that is not easy to carry. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides a high-altitude work safety belt monitoring system based on MCU.

[0004] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is:

[0005] A high-altitude work safety belt monitoring system based on MCU, comprising an MCU control chassis and a pressure sensing module, an image recognition module and an infrared integration module which are all wirelessly connected to the MCU control chassis;

[0006] The pressure sensing module is used to collect the internal pressure data of the seat belt buckle according to the start signal, and synchronously execute the sound and light alarm according to the sound and light alarm signal;

[0007] The image recognition module is arranged on the detection door, and is used to collect the image data of the staff according to the image input signal, and synchronously execute the sound and light alarm according to the sound and light alarm signal;

[0008] The infrared integrated module is installed on the aerial work protection frame to collect infrared digital signals and identity information of the workers;

[0009] The MCU control chassis is used to generate an image entry signal, generate a start signal according to the infrared digital signal and identity information of the staff, obtain the seat belt monitoring result according to the internal pressure data of the seat belt buckle and the image data of the staff, and determine whether to generate an audible and visual alarm signal based on the seat belt monitoring result.

[0010] Furthermore, the pressure sensing module includes a bridge sensor, a pressure signal acquisition submodule, a first wireless communication submodule and a first sound and light alarm submodule; the bridge sensor is used to generate a resistance value change according to the internal pressure of the seat belt buckle; the pressure signal acquisition submodule is used to convert the voltage change caused by the resistance value change into a digital signal according to the start signal transmitted by the first wireless communication submodule, so as to collect the internal pressure data of the seat belt buckle, and transmit it to the MCU control chassis through the first wireless communication submodule; the first sound and light alarm submodule is used to synchronously execute the sound and light alarm according to the sound and light alarm signal transmitted by the MCU control chassis.

[0011] Furthermore, the pressure signal acquisition submodule includes a resistor R2, a capacitor C2, a capacitor C1, a resistor R3, a resistor R4, a capacitor C3, a capacitor C4, a transistor Q1 and a HX711 chip; one end of the resistor R2 is connected to the bridge sensor, the other end of the resistor R2 is simultaneously connected to one end of the capacitor C2 and the eighth pin of the HX711 chip, the other end of the capacitor C2 is simultaneously connected to the bridge sensor and the seventh pin of the HX711 chip, one end of the capacitor C1 is grounded, the other end of the capacitor C1 is simultaneously connected to the power supply, the first pin of the HX711 chip and the emitter of the transistor Q1, the base of the transistor Q1 is connected to the second pin of the HX711 chip, and the transistor The collector of Q1 is simultaneously connected to the bridge sensor, one end of the capacitor C3, one end of the resistor R3 and the third pin of the HX711 chip, the other end of the capacitor C3 is simultaneously connected to the analog ground pin, one end of the resistor R4, the fifth pin of the HX711 chip and one end of the capacitor C4, the other end of the resistor R3 and the other end of the resistor R4 are both connected to the fourth pin of the HX711 chip, the other end of the capacitor C4 is connected to the sixth pin of the HX711 chip, the sixteenth pin of the HX711 chip is connected to the power supply, the fifteenth pin and the fourteenth pin of the HX711 chip are both grounded, and the twelfth pin and the eleventh pin of the HX711 chip are both connected to the first wireless communication sub-module.

[0012] Furthermore, the image recognition module includes an OV7725 image acquisition submodule, a second wireless communication submodule and a second sound and light alarm submodule; the OV7725 image acquisition submodule and the second wireless communication submodule are connected using wireless output and wireless access, and the OV7725 image acquisition submodule is used to collect image data of the staff according to the image entry signal transmitted by the second wireless communication submodule.

[0013] Furthermore, the infrared integrated module includes a pyroelectric probe, a filtering and protecting submodule, an operational amplifier, a comparator, a third wireless communication submodule, a third sound and light alarm submodule and a radio frequency submodule; the pyroelectric probe is used to generate a current signal according to the infrared rays emitted by the staff; the filtering and protecting submodule is used to protect the infrared integrated module and filter the current signal generated by the pyroelectric probe; the operational amplifier is used to amplify the filtered electrical signal and convert it into a voltage signal; the comparator is used to convert the voltage signal output by the operational amplifier into an infrared digital signal; the third wireless communication submodule is used to transmit the infrared digital signal to the MCU control chassis; the radio frequency submodule is used to identify the IC card of the staff to collect the identity information of the staff and transmit the identity information of the staff to the MCU control chassis.

[0014] Furthermore, the filtering protection submodule includes a diode D1, a resistor R7, a resistor R5, a resistor R6, a capacitor C5 and a capacitor C6; the cathode of the diode D1 is connected to the second port of the pyroelectric probe, the anode of the diode D1 is simultaneously connected to one end of the resistor R7, one end of the resistor R5 and one end of the resistor R6, one end of the resistor R7, one end of the resistor R5 and one end of the resistor R6 are all connected to the third port of the pyroelectric probe, the other end of the resistor R7 is simultaneously connected to one end of the capacitor C6 and the positive input port of the operational amplifier, the other end of the resistor R5 is simultaneously connected to the negative input port of the operational amplifier and one end of the capacitor C5, and the other end of the resistor R6, the other end of the capacitor C6 and the other end of the capacitor C5 are all grounded.

[0015] Furthermore, the MCU control chassis includes an MCU controller, a control button, a fourth wireless communication sub-module and a fourth sound and light alarm sub-module; the MCU controller is used to generate a start signal based on the infrared digital signal and identity information of the staff, and transmit it to the pressure sensing module through the fourth wireless communication sub-module, receive the internal pressure data of the seat belt buckle and the image data of the staff transmitted by the fourth wireless communication sub-module to obtain the seat belt monitoring results, and determine whether to generate a sound and light alarm signal based on the seat belt monitoring results; the control button is used to generate an image entry signal, and transmit it to the image recognition module through the fourth wireless communication sub-module; the fourth sound and light alarm sub-module is used to execute a sound and light alarm based on the sound and light alarm signal.

[0016] Furthermore, the control buttons also include a stop alarm button, a download button and a reset button; the stop alarm button is used to turn off the sound and light alarm; the download button is used to open the data download port to use the memory to download monitoring data; the reset button is used to restart the system when a system failure occurs.

[0017] Furthermore, the MCU control chassis is also provided with a display; the display is connected to the MCU controller, and the display is used to display sound and light alarm information.

[0018] The present invention has the following beneficial effects:

[0019] (1) The present invention arranges a pressure sensing module inside the seat belt buckle and an image recognition module on the detection door, so that not only the pressure data inside the seat belt buckle can be collected according to the start signal, but also the image data of the staff can be collected according to the image input signal, thereby making the monitoring method more comprehensive and accurate. In addition, the arranged pressure sensing module can break through the limitation of space and cover a wider range.

[0020] (2) The present invention sets an infrared integrated module on the aerial work protection frame, which can not only collect infrared digital signals and identity information of workers, but also locate the specific position of workers, thereby improving the real-time and effectiveness of alarms;

[0021] (3) The present invention adopts an MCU control chassis, which not only reduces the size of the operating chassis, making it convenient to carry, but also reduces costs. At the same time, programming is simple and development is easy. In addition, the MCU control chassis is connected to the pressure sensing module, the image recognition module and the infrared integration module through wireless communication, making the monitoring system easier to assemble and carry.

[0022] (4) When setting the pressure signal acquisition submodule, the present invention takes into account the HX711 chip used and sets the corresponding external circuit, so that the signals acquired and output by the chip are not distorted, while ensuring that the chip can operate stably;

[0023] (5) The present invention can protect the infrared integrated module and effectively filter the current signal generated by the pyroelectric probe by setting a filtering protection submodule. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of a high-altitude work safety belt monitoring system based on MCU;

[0025] Figure 2 This is a schematic diagram of the safety belt buckle structure of the present invention;

[0026] Figure 3 This is a circuit diagram of the pressure sensing module of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the detection door of the present invention;

[0028] Figure 5 This is a circuit diagram of the image recognition module of the present invention;

[0029] Figure 6 This is a schematic diagram of the installation position of the infrared integrated module of the present invention;

[0030] Figure 7This is a schematic diagram of the structure of the infrared integrated module of the present invention;

[0031] Figure 8 This is a circuit diagram of the infrared integrated module of the present invention;

[0032] Fig. 9 This is a schematic diagram of the overall structure of the MCU control chassis of the present invention;

[0033] Fig.10 This is a schematic diagram of the internal structure of the MCU control chassis of the present invention;

[0034] Fig.11 This is a schematic diagram of the upper surface structure of the MCU control chassis of the present invention;

[0035] Fig.12 This is a circuit diagram of the sound and light alarm submodule of the present invention;

[0036] Fig.13 The MCU control chassis circuit diagram of the present invention;

[0037] Among them: 1. MCU control chassis, 2. MCU controller, 3. fourth wireless communication submodule, 4. casing, 5. display, 6. download button, 7. image entry button, 8. reset button, 9. stop alarm button, 10. buzzer, 11. LED, 12. cover, 13. detection door, 14. OV7725 image acquisition submodule, 16. second wireless communication submodule, 17. second sound and light alarm submodule, 18. seat belt buckle, 19. first wireless communication submodule, 20. bridge sensor, 21. first sound and light alarm submodule, 22. radio frequency submodule, 23. pyroelectric probe, 25. third wireless communication submodule, 26. third sound and light alarm submodule, 27. high-altitude operation protection frame, 28. infrared integrated module. DETAILED DESCRIPTION

[0038] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0039] like Figure 1 As shown, a high-altitude work safety belt monitoring system based on MCU includes an MCU control chassis and a pressure sensing module, an image recognition module and an infrared integration module which are all wirelessly connected to the MCU control chassis.

[0040] In an optional embodiment of the present invention, the pressure sensing module is used to collect the internal pressure data of the seat belt buckle according to the start signal, and synchronously execute the sound and light alarm according to the sound and light alarm signal.

[0041] like Figure 2 As shown, the pressure sensing module is arranged inside the seat belt buckle 18, and the pressure sensing module includes a bridge sensor 20, a pressure signal acquisition submodule built into the bridge sensor 20, a first wireless communication submodule 19 and a first sound and light alarm submodule 21; the bridge sensor is used to generate a resistance value change according to the internal pressure of the seat belt buckle; the pressure signal acquisition submodule is used to convert the voltage change caused by the resistance value change into a digital signal according to the start signal transmitted by the first wireless communication submodule, so as to collect the internal pressure data of the seat belt buckle, and transmit it to the MCU control chassis through the first wireless communication submodule; the first sound and light alarm submodule is used to synchronously execute the sound and light alarm according to the sound and light alarm signal transmitted by the MCU control chassis.

[0042] like Figure 3 As shown, the pressure signal acquisition submodule includes a resistor R2, a capacitor C2, a capacitor C1, a resistor R3, a resistor R4, a capacitor C3, a capacitor C4, a transistor Q1 and a HX711 chip; one end of the resistor R2 is connected to the bridge sensor, the other end of the resistor R2 is simultaneously connected to one end of the capacitor C2 and the eighth pin of the HX711 chip, the other end of the capacitor C2 is simultaneously connected to the bridge sensor and the seventh pin of the HX711 chip, one end of the capacitor C1 is grounded, the other end of the capacitor C1 is simultaneously connected to the power supply, the first pin of the HX711 chip and the emitter of the transistor Q1, the base of the transistor Q1 is connected to the second pin of the HX711 chip, and the transistor Q The collector of 1 is simultaneously connected to the bridge sensor, one end of the capacitor C3, one end of the resistor R3 and the third pin of the HX711 chip, the other end of the capacitor C3 is simultaneously connected to the analog ground pin, one end of the resistor R4, the fifth pin of the HX711 chip and one end of the capacitor C4, the other end of the resistor R3 and the other end of the resistor R4 are both connected to the fourth pin of the HX711 chip, the other end of the capacitor C4 is connected to the sixth pin of the HX711 chip, the sixteenth pin of the HX711 chip is connected to the power supply, the fifteenth pin and the fourteenth pin of the HX711 chip are both grounded, and the twelfth pin and the eleventh pin of the HX711 chip are both connected to the first wireless communication sub-module.

[0043] The first wireless communication module in the present invention adopts the STM32F103C8T minimum system and the ESP8266 module.

[0044] In the present invention, when the bridge sensor senses pressure, its internal resistance value changes, thereby causing the voltage across the INNA and INPA pins of the HX711 chip to change. The HX711 chip converts the changed voltage signal into a sixteen-bit digital signal, and transmits the digital signal to the PB0 and PB1 pins of the STM32F103C8T6 minimum system of the first wireless communication module through the DOUT and PD_SCK pins. The first wireless communication module then transmits the signal to the MCU control chassis through the local area network.

[0045] In an optional embodiment of the present invention, an image recognition module is disposed on the detection door, and is used to collect image data of the staff according to the image input signal, and synchronously execute the sound and light alarm according to the sound and light alarm signal.

[0046] like Figure 4 As shown, the image recognition module is arranged on the detection door 4, and the image recognition module includes an OV7725 image acquisition submodule 14, a second wireless communication submodule 16 and a second sound and light alarm submodule 17; the OV7725 image acquisition submodule and the second wireless communication submodule are connected by wireless output and wireless access, and the OV7725 image acquisition submodule is used to collect image data of the staff according to the image entry signal transmitted by the second wireless communication submodule.

[0047] The second wireless communication module in the present invention adopts the STM32F103C8T minimum system and the ESP8266 module.

[0048] like Figure 5As shown, the present invention provides an image recognition module circuit diagram. Since the image recognition module has 20 wiring terminals, the huge amount of wiring will make the image recognition module appear very chaotic, so the OV7725 image acquisition submodule and the second wireless communication submodule are connected by wireless output and wireless access, but in reality, a wired connection is used. The power input (VCC) and ground wire (GND) of the OV7725 image acquisition submodule are connected to 3.3V and GND respectively. The system reset signal (RSTB) and the power saving mode selection input (PWDN) of the OV7725 image acquisition submodule are respectively controlled by the PA1 and PA2 pins of the STM32F103C8T6 minimum system in the second wireless communication submodule. The clock signal XCLK of the OV7725 image acquisition submodule is set at PA8, and the pixel, line, and field synchronization signals (PCLK, HREF, VSYNC) are managed by PB0, PB1, and PB2 of the STM32F103C8T6 minimum system in the second wireless communication submodule. The data terminals D0 to D9 of the OV7725 image acquisition submodule are allocated from PA6 of the STM32F103C8T6 minimum system in the second wireless communication submodule to PB10, which is responsible for transmitting image data. In addition, the SDA and SCL lines of the OV7725 image acquisition submodule are respectively connected to PA4 and PA5 of the STM32F103C8T6 minimum system in the second wireless communication submodule for data transmission and clock control. This configuration ensures that the image data can be efficiently and accurately transmitted to the STM32F103C8T6 minimum system in the second wireless communication submodule.

[0049] In an optional embodiment of the present invention, the infrared integrated module is arranged on the aerial work protection frame to collect infrared digital signals and identity information of the workers.

[0050] like Figure 6 As shown, the infrared integrated module 28 is arranged on the aerial work protection frame 27. Figure 7As shown, the infrared integrated module includes a pyroelectric probe 23, a filter protection submodule built into the pyroelectric probe 23, an operational amplifier built into the pyroelectric probe 23, a comparator built into the pyroelectric probe 23, a third wireless communication submodule 25, a third sound and light alarm submodule 26 and a radio frequency submodule 22; the pyroelectric probe is used to generate a current signal according to the infrared emitted by the staff; the filter protection submodule is used to protect the infrared integrated module and filter the current signal generated by the pyroelectric probe; the operational amplifier is used to amplify the filtered electrical signal and convert it into a voltage signal; the comparator is used to convert the voltage signal output by the operational amplifier into an infrared digital signal; the third wireless communication submodule is used to transmit the infrared digital signal to the MCU control chassis; the radio frequency submodule is used to identify the IC card of the staff to collect the identity information of the staff and transmit the identity information of the staff to the MCU control chassis. The IC card in the present invention adopts an S50-M1 card.

[0051] like Figure 8 As shown, the pyroelectric probe adopts PIR203A, the operational amplifier adopts CPA2994IDR, the comparator adopts UPC277GR, the radio frequency submodule adopts RFID-RC522, and the filtering protection submodule includes a diode D1, a resistor R7, a resistor R5, a resistor R6, a capacitor C5 and a capacitor C6; the cathode of the diode D1 is connected to the second port of the pyroelectric probe, the anode of the diode D1 is connected to one end of the resistor R7, one end of the resistor R5 and one end of the resistor R6 at the same time, one end of the resistor R7, one end of the resistor R5 and one end of the resistor R6 are all connected to the third port of the pyroelectric probe, the other end of the resistor R7 is connected to one end of the capacitor C6 and the positive input port of the operational amplifier at the same time, the other end of the resistor R5 is connected to the negative input port of the operational amplifier and one end of the capacitor C5 at the same time, and the other end of the resistor R6, the other end of the capacitor C6 and the other end of the capacitor C5 are all grounded.

[0052] The third wireless communication module in the present invention adopts the STM32F103C8T minimum system and the ESP8266 module.

[0053] Specifically, when a worker enters work area No. N with a No. M safety belt and No. M IC card, the pyroelectric probe generates a current signal, the operational amplifier amplifies the filtered electrical signal and converts it into a voltage signal, the comparator converts the voltage signal output by the operational amplifier into an infrared digital signal, and the infrared digital signal is transmitted to the MCU control chassis via the third wireless communication module. At the same time, the radio frequency submodule recognizes that the worker's IC card number is No. M, and transmits the 16-bit binary identity information to the MCU control chassis via the second wireless communication module. At this time, the system can recognize that worker No. M is in area No. N.

[0054] In an optional embodiment of the present invention, the MCU control chassis is used to generate an image entry signal, generate a start signal based on the infrared digital signal and identity information of the staff, obtain the seat belt monitoring result based on the internal pressure data of the seat belt buckle and the image data of the staff, and determine whether to generate an audible and visual alarm signal based on the seat belt monitoring result.

[0055] like Fig. 9 As shown, the present invention provides a schematic diagram of the overall structure of the MCU control chassis 1. Fig.10 As shown, the interior of the MCU control chassis 1 includes an MCU controller 2, a fourth wireless communication submodule 3 and a housing 4. Fig.11 As shown, the surface of the MCU control chassis 1 includes a control button, a buzzer 10 and an LED 11 in the fourth sound and light alarm submodule, and a cover 12. The MCU controller is used to generate a start signal according to the infrared digital signal and identity information of the staff, and transmit it to the pressure sensing module through the fourth wireless communication submodule, receive the internal pressure data of the seat belt buckle and the image data of the staff transmitted by the fourth wireless communication submodule, so as to obtain the seat belt monitoring result, and determine whether to generate a sound and light alarm signal according to the seat belt monitoring result; the control button is used to generate an image entry signal, and transmit it to the image recognition module through the fourth wireless communication submodule; the third sound and light alarm submodule is used to execute a sound and light alarm according to the sound and light alarm signal.

[0056] The MCU controller in the present invention adopts the STM32F407VET6 minimum system. The control system uses ARM Cortex-M4 as the core, has high-performance processing capabilities, extensive peripheral support, sufficient storage space and low-power design, flexible debugging interface and good development ecology, and the control system has a complete power supply circuit, reset circuit, clock circuit, Boot startup mode selection circuit, program download and debugging circuit. The fourth wireless communication submodule in the present invention adopts the ESP8266 module. The present invention starts the system, and the system automatically runs to connect the fourth wireless communication submodule with the first wireless communication submodule, the second wireless communication submodule and the third wireless communication submodule to form a local area network. The fourth sound and light alarm submodule, the first sound and light alarm submodule, the second sound and light alarm submodule and the third sound and light alarm submodule in the present invention have the same structure. The structure of the sound and light alarm submodule is as follows Fig.12 As shown, the fourth sound and light alarm submodule is directly connected to the MCU controller by wire, while the first sound and light alarm submodule, the second sound and light alarm submodule and the third sound and light alarm submodule are wirelessly connected to the MCU controller through the wireless communication modules of the corresponding modules.

[0057] like Fig.11As shown, the control buttons include an image entry button 7, a stop alarm button 9, a download button 6 and a reset button 8; the stop alarm button is used to turn off the sound and light alarm; the download button is used to open the data download port to use the memory to download monitoring data; the reset button is used to restart the system when a system failure occurs.

[0058] like Fig.11 As shown, the MCU control chassis is also provided with a display 5; the display is connected to the MCU controller, and the display is used to display sound and light alarm information.

[0059] like Fig.13 As shown, the present invention provides a circuit diagram of an MCU controlling a chassis.

[0060] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0061] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0062] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0063] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

[0064] Those skilled in the art will appreciate that the embodiments described herein are intended to help readers understand the principles of the present invention, and should be understood that the protection scope of the present invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific variations and combinations that do not deviate from the essence of the present invention based on the technical revelations disclosed by the present invention, and these variations and combinations are still within the protection scope of the present invention.

Claims

1. A high-altitude work safety belt monitoring system based on MCU, characterized in that: It includes an MCU control chassis and a pressure sensing module, an image recognition module and an infrared integration module which are all wirelessly connected to the MCU control chassis; The pressure sensing module is used to collect the internal pressure data of the seat belt buckle according to the start signal, and synchronously execute the sound and light alarm according to the sound and light alarm signal; The image recognition module is arranged on the detection door, and is used to collect the image data of the staff according to the image input signal, and synchronously execute the sound and light alarm according to the sound and light alarm signal; The infrared integrated module is installed on the aerial work protection frame to collect infrared digital signals and identity information of the workers; The MCU control chassis is used to generate an image entry signal, generate a start signal according to the infrared digital signal and identity information of the staff, obtain the seat belt monitoring result according to the internal pressure data of the seat belt buckle and the image data of the staff, and determine whether to generate an audible and visual alarm signal based on the seat belt monitoring result.

2. The MCU-based high-altitude work safety belt monitoring system according to claim 1 is characterized in that: The pressure sensing module includes a bridge sensor, a pressure signal acquisition submodule, a first wireless communication submodule and a first sound and light alarm submodule; the bridge sensor is used to generate a resistance value change according to the internal pressure of the seat belt buckle; the pressure signal acquisition submodule is used to convert the voltage change caused by the resistance value change into a digital signal according to the start signal transmitted by the first wireless communication submodule, so as to collect the internal pressure data of the seat belt buckle, and transmit it to the MCU control chassis through the first wireless communication submodule; the first sound and light alarm submodule is used to synchronously execute the sound and light alarm according to the sound and light alarm signal transmitted by the MCU control chassis.

3. The MCU-based high-altitude work safety belt monitoring system according to claim 2 is characterized in that: The pressure signal acquisition submodule includes a resistor R2, a capacitor C2, a capacitor C1, a resistor R3, a resistor R4, a capacitor C3, a capacitor C4, a transistor Q1 and an HX711 chip; one end of the resistor R2 is connected to the bridge sensor, the other end of the resistor R2 is simultaneously connected to one end of the capacitor C2 and the eighth pin of the HX711 chip, the other end of the capacitor C2 is simultaneously connected to the bridge sensor and the seventh pin of the HX711 chip, one end of the capacitor C1 is grounded, the other end of the capacitor C1 is simultaneously connected to the power supply, the first pin of the HX711 chip and the emitter of the transistor Q1, the base of the transistor Q1 is connected to the second pin of the HX711 chip, and the The collector is simultaneously connected to the bridge sensor, one end of the capacitor C3, one end of the resistor R3 and the third pin of the HX711 chip, the other end of the capacitor C3 is simultaneously connected to the analog ground pin, one end of the resistor R4, the fifth pin of the HX711 chip and one end of the capacitor C4, the other end of the resistor R3 and the other end of the resistor R4 are both connected to the fourth pin of the HX711 chip, the other end of the capacitor C4 is connected to the sixth pin of the HX711 chip, the sixteenth pin of the HX711 chip is connected to the power supply, the fifteenth pin and the fourteenth pin of the HX711 chip are both grounded, and the twelfth pin and the eleventh pin of the HX711 chip are both connected to the first wireless communication sub-module.

4. The MCU-based high-altitude work safety belt monitoring system according to claim 1 is characterized in that: The image recognition module includes an OV7725 image acquisition submodule, a second wireless communication submodule and a second sound and light alarm submodule; the OV7725 image acquisition submodule and the second wireless communication submodule are connected using wireless output and wireless access, and the OV7725 image acquisition submodule is used to collect image data of the staff according to the image entry signal transmitted by the second wireless communication submodule.

5. The MCU-based high-altitude work safety belt monitoring system according to claim 1 is characterized in that: The infrared integrated module includes a pyroelectric probe, a filtering and protecting submodule, an operational amplifier, a comparator, a third wireless communication submodule, a third sound and light alarm submodule and a radio frequency submodule; the pyroelectric probe is used to generate a current signal according to the infrared rays emitted by the staff; the filtering and protecting submodule is used to protect the infrared integrated module and filter the current signal generated by the pyroelectric probe; the operational amplifier is used to amplify the filtered electrical signal and convert it into a voltage signal; the comparator is used to convert the voltage signal output by the operational amplifier into an infrared digital signal; the third wireless communication submodule is used to transmit the infrared digital signal to the MCU control chassis; the radio frequency submodule is used to identify the IC card of the staff to collect the identity information of the staff and transmit the identity information of the staff to the MCU control chassis.

6. The MCU-based high-altitude work safety belt monitoring system according to claim 5 is characterized in that: The filtering protection submodule includes a diode D1, a resistor R7, a resistor R5, a resistor R6, a capacitor C5 and a capacitor C6; the cathode of the diode D1 is connected to the second port of the pyroelectric probe, the anode of the diode D1 is simultaneously connected to one end of the resistor R7, one end of the resistor R5 and one end of the resistor R6, one end of the resistor R7, one end of the resistor R5 and one end of the resistor R6 are all connected to the third port of the pyroelectric probe, the other end of the resistor R7 is simultaneously connected to one end of the capacitor C6 and the positive input port of the operational amplifier, the other end of the resistor R5 is simultaneously connected to the negative input port of the operational amplifier and one end of the capacitor C5, and the other end of the resistor R6, the other end of the capacitor C6 and the other end of the capacitor C5 are all grounded.

7. The MCU-based high-altitude work safety belt monitoring system according to claim 1 is characterized in that: The MCU control chassis includes an MCU controller, a control button, a fourth wireless communication sub-module and a fourth sound and light alarm sub-module; the MCU controller is used to generate a start signal according to the infrared digital signal and identity information of the staff, and transmit it to the pressure sensing module through the fourth wireless communication sub-module, receive the internal pressure data of the seat belt buckle and the image data of the staff transmitted by the fourth wireless communication sub-module to obtain the seat belt monitoring results, and determine whether to generate a sound and light alarm signal according to the seat belt monitoring results; the control button is used to generate an image entry signal, and transmit it to the image recognition module through the fourth wireless communication sub-module; the fourth sound and light alarm sub-module is used to execute a sound and light alarm according to the sound and light alarm signal.

8. The MCU-based high-altitude work safety belt monitoring system according to claim 7 is characterized in that: The control buttons also include a stop alarm button, a download button and a reset button; the stop alarm button is used to turn off the sound and light alarm; the download button is used to open the data download port to use the memory to download monitoring data; the reset button is used to restart the system when a system failure occurs.

9. The MCU-based high-altitude work safety belt monitoring system according to claim 7 is characterized in that: The MCU control box is also provided with a display; the display is connected to the MCU controller, and the display is used to display sound and light alarm information.

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