Mechanical construction near-electricity operation safety distance early warning device based on Beidou positioning

Abstract

The utility model discloses a mechanized construction near-electricity operation safety distance early warning device based on Beidou positioning. The device comprises a Beidou positioning unit and a touch all-in-one machine. The Beidou positioning unit is located at the top of the construction mechanical arm. The Beidou positioning unit comprises a Beidou RTK positioning module, a first communication module and a first power supply module; the Beidou RTK positioning module is in communication connection with the first communication module; the touch all-in-one machine comprises an information acquisition and processing module, an equipment information detection module, a file storage module, a second communication module, a touch screen and a second power supply module; the information acquisition and processing module is respectively in communication connection with the equipment information detection module, the file storage module, the second communication module and the touch screen; and the second power supply module is connected with the information acquisition and processing module, the equipment information detection module, the file storage module, the second communication module and the touch screen respectively. The utility model has the advantages of guaranteeing operation safety and the like.

Description

Technical Field

[0001] This utility model mainly relates to the field of power construction technology, specifically to a safety distance early warning device for mechanized construction near-electric work based on Beidou positioning. Background Technology

[0002] With the continuous expansion of power engineering projects and the increasing complexity of operating environments, the problems of low monitoring accuracy and limited range of traditional safety distance early warning devices are becoming increasingly prominent. Furthermore, these devices are susceptible to strong electromagnetic interference and adverse weather conditions, making it difficult to provide accurate measurement results in complex working environments, thus failing to fully meet the actual needs of construction safety in today's complex engineering environments. Therefore, developing a high-precision, high-efficiency near-electricity safety early warning device for construction machinery that can adapt to various complex environmental conditions, further improving the safety management level of construction sites, effectively protecting the personal safety of construction personnel, and preventing damage to power facilities due to external factors is one of the technical challenges that urgently needs to be overcome by those skilled in the art. Therefore, the following technical problems need to be addressed in the current early warning device:

[0003] 1. In complex power construction sites, how to ensure accurate and stable acquisition of the three-dimensional coordinates of live equipment, and how to efficiently process the coordinates of the three-dimensional model of live equipment and eliminate various interference factors, such as weather changes and electromagnetic interference.

[0004] 2. How to quickly calculate the minimum distance between the positioning device and the live lines and equipment when working near power lines, and how to achieve a rapid response alarm when the construction machinery is below the safe distance from the live lines and equipment. Utility Model Content

[0005] To address the technical problems existing in the prior art, this utility model provides a safety distance early warning device for mechanized construction near-electrical work based on Beidou positioning to ensure operational safety.

[0006] To solve the above-mentioned technical problems, the technical solution proposed by this utility model is as follows:

[0007] A safety distance early warning device for mechanized construction near-electric work based on Beidou positioning includes a Beidou positioning unit and a touch screen all-in-one machine; the Beidou positioning unit is located on the top of the construction robot arm;

[0008] The BeiDou positioning unit includes a BeiDou RTK positioning module, a first communication module, and a first power module; the BeiDou RTK positioning module is communicatively connected to the first communication module; the first power module is connected to both the BeiDou RTK positioning module and the first communication module to provide the required power.

[0009] The touch screen all-in-one machine includes an information acquisition and processing module, a device information detection module, a file storage module, a second communication module, a touch screen, and a second power module. The information acquisition and processing module is communicatively connected to the device information detection module, the file storage module, the second communication module, and the touch screen. The second power module is connected to the information acquisition and processing module, the device information detection module, the file storage module, the second communication module, and the touch screen to provide the required power.

[0010] Preferably, the device information detection module includes a crystal oscillator X1, an integrated circuit TDA66, a microcontroller U13, and a level signal conversion and conditioning circuit. The two ends of the crystal oscillator X1 are connected to the integrated circuit TDA66 to provide a clock reference. The level signal conversion and conditioning circuit is communicatively connected to the integrated circuit TDA66 to perform level conversion and signal conditioning on the signal output by the integrated circuit TDA66, converting it into a signal conforming to the RS-232 standard. The microcontroller U13 is communicatively connected to the integrated circuit TDA66 and communicates serially with external devices through the RS-232 interface to achieve bidirectional data transmission.

[0011] Preferably, one end of the crystal oscillator X1 is connected to the integrated circuit TDA66 through capacitor C14, and the other end is connected to the integrated circuit TDA66 through capacitor C15.

[0012] Preferably, the information acquisition and processing module includes a voltage conversion circuit, a core processing unit, a storage and data interaction unit, and an interface unit; the voltage conversion circuit is connected to the core processing unit and is used to convert 12V power supply to 5V and 3.3V power supply; the core processing unit is communicatively connected to the storage and data interaction unit and the interface unit respectively.

[0013] Preferably, the voltage conversion circuit includes a 12V to 5V module and a 5V to 3.3V module; the 12V to 5V module includes a power management chip U14, a diode D11, and capacitors C25, C26, C27, and C28; the cathode of D11 is connected to one end of C26 and C27 and the input terminal of U14, respectively; the output terminal of U14 is connected to one end of C25 and C28; the other ends of capacitors C25, C26, C27, and C28 and the ground terminal of U14 are all grounded.

[0014] Preferably, both the first communication module and the second communication module are 4G / BT / WiFi multi-standard converged communication modules.

[0015] Preferably, the touch screen all-in-one machine further includes one or more of the following: a Type-C power interface, a micro HDMI interface, a Gigabit Ethernet port, and a USB interface.

[0016] Preferably, the positioning unit further includes a USB charging port and an indicator light.

[0017] Compared with the prior art, the advantages of this utility model are:

[0018] This utility model discloses a safety distance early warning device for mechanized construction near-electrical work based on Beidou positioning. Through the cooperation of a positioning unit and a touch screen all-in-one machine, and based on Beidou RTK high-precision differential positioning technology, it monitors the distance between construction machinery and power facilities in real time, realizes intelligent perception and early warning of the working environment, and ensures the safety of the operation. Attached Figure Description

[0019] Figure 1 This is a block diagram of the early warning device of this utility model in an embodiment.

[0020] Figure 2 This is a diagram illustrating an embodiment of the early warning device of this utility model in a specific application.

[0021] Figure 3 This is a structural diagram of the positioning unit of this utility model in an embodiment. The labels in the diagram are as follows:

[0022] Figure 4 This is a schematic diagram of the structure of the touch screen all-in-one machine of this utility model. The labels in the diagram are as follows:

[0023] Figure 5 This is a circuit diagram of the information acquisition and processing module of this utility model.

[0024] Figure 6 This is a circuit diagram of the equipment information detection module of this utility model.

[0025] Legend: 1. Wire; 2. Positioning unit; 201. First main body; 202. Power switch; 203. IoT card slot; 204. USB charging interface; 205. Indicator light; 206. Beidou RTK positioning module; 207. First communication module; 208. First power module; 3. Touch screen all-in-one machine; 301. Second main body; 302. Touch screen; 303. Type-C power interface; 304. Micro HDMI interface; 305. Gigabit Ethernet; 306. USB interface; 307. Information acquisition and processing module; 308. Equipment information detection module; 309. File storage module; 310. Second communication module; 311. Second power module; 4. Construction machinery. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] like Figure 1As shown, the safety distance warning device for mechanized construction near-electric work based on Beidou positioning in this embodiment of the utility model includes a Beidou RTK high-precision differential positioning unit 2 and a highly integrated portable touch screen all-in-one machine 3.

[0028] The Beidou RTK high-precision differential positioning unit 2 includes a Beidou RTK positioning module 206, a first communication module 207, a first power module 208, an IoT card slot 203, and a USB charging interface 204; the Beidou RTK positioning module 206 is communicatively connected to the first communication module 207; the first power module 208 is connected to both the Beidou RTK positioning module 206 and the first communication module 207 to provide the required power.

[0029] The highly integrated portable touch screen all-in-one machine 3 includes an information acquisition and processing module 307, a device information detection module 308, a second communication module 310, a high-definition touch screen 302, an SD card slot, an IoT card slot 203, a second power module 311, a USB interface 306, and a buzzer. The information acquisition and processing module 307 is communicatively connected to the device information detection module 308, the file storage module 309, the second communication module 310, and the touch screen 302. The second power module 311 is connected to the information acquisition and processing module 307, the device information detection module 308, the file storage module 309, the second communication module 310, and the touch screen 302 to provide the required power.

[0030] Specifically, the Beidou RTK high-precision differential positioning unit 2 is fixed on the top of the mechanical boom of the construction machinery 4. It uses Beidou RTK (Real-Time Kinematic) high-precision differential positioning technology to achieve centimeter-level elevation and latitude and longitude positioning, and communicates with the highly integrated portable touch screen all-in-one machine 3 through a 4G / BT / WiFi multi-standard converged communication module.

[0031] The Beidou RTK high-precision differential positioning unit 2 features a built-in dual-frequency RTK positioning module with an accuracy of <5cm +1ppm (95%). It includes an IoT card slot 203 and a USB charging port 204, a built-in 3.8V / 3000mAh battery, IP67 waterproof and dustproof rating, an operating temperature range of -20℃ to +65℃, and a storage temperature range of -40℃ to +80℃. The Beidou RTK high-precision differential positioning unit 2 is installed using screw mounting and can be quickly disassembled using a magic grip pliers or a magnetic base, and is equipped with a universal joint.

[0032] The highly integrated portable touch screen all-in-one machine 3 is placed next to the operator and includes a file storage module 309, an information acquisition and processing module 307, an equipment information detection module 308, a second communication module 310, a high-definition display screen (touch screen 302), a second power module 311, a buzzer, an IoT card slot 203, and four USB ports 306. The file storage module 309 is used to store the location information of live equipment (such as wire 1) on site. The information acquisition and processing module 307 exchanges data with the Beidou RTK high-precision differential positioning unit 2 via a network communication module. It compares the positioning information from the dual-frequency RTK positioning module with the location information of the live equipment on site. When the difference between the positioning information from the dual-frequency RTK positioning module and the location of the live equipment is within a certain threshold, a braking signal is sent, and a safe distance and warning information are displayed on the high-definition display screen and through the buzzer.

[0033] The highly integrated portable touch screen all-in-one PC 3 is based on the Raspberry Pi 5 development board and integrates a high-performance quad-core ARM processor with a main frequency of 2.5GHz. It comes pre-installed with a customized Linux operating system, has 8GB of RAM, 64GB of ROM, and supports storage expansion via SD card, which can be expanded up to 256GB. The aforementioned high-definition display is a 3.5-inch high-definition touch screen 302.

[0034] like Figure 5 As shown, the information acquisition and processing module 307 has a circuit protection module to ensure the smooth operation of each chip. The W25Q16 chip provides 16MB of storage and supports a read / write frequency of 133MHz.

[0035] like Figure 6 As shown, in the device information detection module 308, the TDA65 integrated circuit, in conjunction with high-precision capacitors and resistors, achieves precise current control. The crystal oscillator provides a frequency stability of ±1ppm. The RS-232 interface uses a MAX232 chip for level conversion, with a bit error rate of less than 1×10⁻⁶. -6 The communication rate is 115200bps. The connector supports high-speed data transmission with a response time of less than 0.1 seconds, ensuring efficient collaboration between the system and external devices.

[0036] The 4G / BT / WiFi multi-standard converged communication module supports BT5.0, 2.4GHz, and an ultra-long transmission distance of 30m. The WiFi module supports dual-band 2.4GHz and 5GHz, compliant with 802.11a / b / g / n / ac standards. The 4G module supports LTE Cat4 and above standards, with a maximum downlink speed of 150Mbps and a maximum uplink speed of 50Mbps, and supports the use of Beidou IoT cards to provide network connectivity and data communication functions.

[0037] By using BeiDou RTK high-precision differential positioning technology, the distance between construction machinery and power facilities can be monitored in real time to achieve the purpose of near-electricity safety early warning. It has the characteristics of high precision, lightweight, strong environmental adaptability, and accurate and fast calculation.

[0038] The BeiDou RTK high-precision differential positioning technology primarily achieves high-precision positioning through one or more reference stations with known coordinates and a rover station (RTK high-precision differential positioning unit 2). The reference station receives signals from BeiDou satellites, compares them with its own coordinates, calculates the errors during signal propagation, and then sends this error information to the rover station. The rover station uses the received error information to correct its own satellite signals and calculate more accurate position information, thereby achieving centimeter-level high-precision positioning.

[0039] The RTK high-precision differential positioning unit 2 has a horizontal positioning accuracy of ≤1cm and a vertical accuracy of ≤2cm. It supports IP67 waterproof and dustproof protection, operates at a temperature of -20℃ to +65℃, and has a storage temperature of -40℃ to +80℃. It features waterproof and dustproof properties, resistance to high and low temperatures, and resistance to electromagnetic interference, enabling it to work stably in harsh environments.

[0040] The information acquisition and processing module 307 of this utility model performs well in near-electric safety early warning systems. It features efficient power management, ensuring circuit stability through a 12V power switch 202 and a chip with overvoltage and overcurrent protection. The W25Q16 chip provides 16MB of storage capacity, supporting high-speed read and write at 133MHz, greatly improving data processing efficiency. In terms of communication, the TDA65 integrated circuit and high-precision components work together to ensure the accuracy of equipment diagnostic communication, while the ±1ppm stability of the crystal oscillator provides a precise clock for the system. The RS-232 interface, using the MAX232 chip, achieves stable communication with low bit error rate and high speed. The connector supports high-speed data transmission; 500MB of point cloud data collected by the UAV can be quickly transmitted to the system. Remote command response is timely, and early warning information is sent rapidly, with a response time controlled within 0.1 seconds, comprehensively ensuring construction safety.

[0041] The equipment information detection module 308 possesses powerful equipment status monitoring capabilities; during device operation, a crystal oscillator with a frequency stability of ±1ppm generates a stable frequency signal to provide a clock reference; the TDA65 integrated circuit, driven by it, processes diagnostic communication with a communication bit error rate of less than 1×10⁻⁶. -6 It can accurately send and receive diagnostic information and efficiently interact with the control unit; its output signal is converted and conditioned by RS-232 interface circuit, which has a communication rate of 115200bps, and then the MAX232 circuit ensures stable serial communication between the microcontroller and external devices. The MAX232 circuit can still ensure reliable data transmission under ±100V / m electric field and ±5A / m magnetic field interference, realizing bidirectional stable data interaction.

[0042] The spatial distance calculation accuracy of the information acquisition and processing module 307 in the highly integrated portable touch screen all-in-one machine 3 can reach ±0.1 meters (under normal working environment and signal conditions), and it updates the position information of the construction machinery 4 and the calculated safe distance data in real time at a frequency of up to 0.01 seconds. The response time from detecting the construction machinery 4 entering the danger zone to issuing an audible and visual alarm signal does not exceed 1 second, and it has the characteristics of accurate calculation, efficient calculation and fast response.

[0043] The present invention provides a safety distance warning device for mechanized construction near-electricity operations based on Beidou positioning. Through Beidou RTK high-precision differential positioning technology, it monitors the distance between construction machinery 4 and power facilities in real time, realizing intelligent perception and early warning of the working environment.

[0044] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0045] like Figure 1 and Figure 3 As shown, the mechanized construction near-electricity operation safety distance early warning device based on Beidou positioning provided by this utility model includes a Beidou RTK high-precision differential positioning unit 2 and a highly integrated portable touch screen all-in-one machine 3; the Beidou RTK high-precision differential positioning unit 2 includes an RTK positioning module, a first communication module 207, a first power module 208, an IoT card slot 203, and a USB charging interface 204; the highly integrated portable touch screen all-in-one machine 3 includes: an information acquisition and processing module 307, an equipment information detection module 308, a second communication module 310, a high-definition touch screen 302, an SD card slot, an IoT card slot 203, a second power module 311, a USB interface 306, and a buzzer.

[0046] like Figure 2 As shown, the Beidou RTK high-precision differential positioning unit 2 is fixed at the highest point of the construction machinery arm 4. During the construction movement, the RTK positioning module obtains the position of the robotic arm through real-time dynamic differential technology and communicates with the highly integrated portable touch screen all-in-one machine 3 through the 4G / BT / WiFi multi-standard converged communication module, transmitting the position of the Beidou RTK high-precision differential positioning unit 2 to the highly integrated portable touch screen all-in-one machine 3 at a frequency of up to 0.01 seconds.

[0047] The Beidou RTK high-precision differential positioning unit 2 receives differential data from RTCM32 and above, supporting BDS, GPS, Galileo, and QZSS, with a baseline distance of 10-40km. The communication module uses LTE Cat1 4G, Bluetooth BT5.0 (30m), and WiFi 2.4GHz & 5GHz (100m), and has a built-in 3.8V / 3000mAh battery with an input voltage of DC 5V.

[0048] The highly integrated portable touch screen all-in-one machine 3 is placed next to the operator. Before on-site operation, the location file of the energized equipment is copied to the file storage module 309 via the USB interface 306, and then the on-site equipment information is displayed on the 3.5-inch high-definition touch screen 302. During on-site operation, the operator clicks the WiFi and Bluetooth icons on the high-definition touch screen 302 to configure the network. The highly integrated portable touch screen all-in-one machine 3 acquires the location data of the Beidou RTK high-precision differential positioning unit 2 in real time through the first communication module 207, and quickly calculates the closest distance between the construction machinery 4 and the energized equipment through the information acquisition and processing module 307, which is displayed on the high-definition touch screen 302. If the closest distance is less than a set threshold, an audible and visual alarm is triggered. During equipment operation, the equipment information detection module 308 can monitor various overall parameters of the equipment in real time. By comparing the collected data with preset standard values ​​and performing threshold analysis, the operating status of the equipment can be accurately determined.

[0049] like Figure 4 As shown, the highly integrated portable touch screen all-in-one machine 3 includes a first main body 201, a high-definition touch screen 302, a Type-C power interface 303, two micro HDMI interfaces 304, a Gigabit Ethernet port 305, four USB interfaces 306, and built-in information acquisition and processing module 307, device information detection module 308, second communication module 310, file storage module 309, second power module 311, and a buzzer speaker. The information acquisition and processing module 307 uses a Raspberry Pi 5 development board, employs an ARM Cortex-A76 2.5GHz processor and 8GB of RAM, and comes pre-installed with a Linux system. The 4GCat1 / BT / WiFi multi-standard converged communication module supports BT5.0, 2.4GHz, and a 30m ultra-long transmission distance. The WiFi module supports 2.4GHz and 5GHz dual-band, conforming to 802.11a / b / g / n / ac standards. The 4G module supports LTE Cat4 and above standards, with a maximum downlink speed of 150Mbps and a maximum uplink speed of 50Mbps. It supports network connectivity and data communication using a Beidou IoT card. The second power module 311 uses lithium battery technology with a capacity of 8000mAh, providing over 8 hours of continuous use (typical operating scenarios such as constant screen illumination, real-time data reception and calculation, and occasional alarm signals). The battery features multiple safety protection functions, including overcharge protection, over-discharge protection, and short-circuit protection.

[0050] like Figure 5As shown, the information acquisition and processing module 307 includes a voltage conversion circuit, a core processing unit, a storage and data interaction unit, and an interface unit. The voltage conversion circuit is connected to the core processing unit and is used to convert 12V power to 5V and 3.3V power. The core processing unit is communicatively connected to the storage and data interaction unit and the interface unit, respectively. The voltage conversion circuit includes a 12V to 5V module and a 5V to 3.3V module. The 12V to 5V module includes a power management chip U14, a diode D11, and capacitors C25, C26, C27, and C28. The cathode of D11 is connected to one end of C26 and C27 and the input terminal of U14, respectively. The output terminal of U14 is connected to one end of C25 and C28. The other ends of capacitors C25, C26, C27, and C28 and the ground terminal of U14 are all grounded.

[0051] When power switch 202 is turned on, the 12V power supply is connected. First, the power management chip performs initial regulation and protection. Then, through 12V to 5V and 5V to 3.3V circuits, the voltage is converted into different stable voltage levels to supply different circuit modules, acting as a protection circuit. After receiving stable power, the core processing unit begins operation, executing programs, processing data, and controlling other modules. The W25Q16 chip is used to store data and interact with the core processing unit, providing clock signals and write protection. The connector serves as the external interface, enabling connection and communication with external devices. The entire module works collaboratively to ensure stable system operation and functional implementation.

[0052] like Figure 6 As shown, the device information detection module 308 includes a crystal oscillator X1, an integrated circuit TDA66, a microcontroller U13, and a level signal conversion and conditioning circuit. The two ends of the crystal oscillator X1 are connected to the integrated circuit TDA66 to provide a clock reference. The level signal conversion and conditioning circuit is communicatively connected to the integrated circuit TDA66 to perform level conversion and signal conditioning on the signal output by the integrated circuit TDA66, converting it into a signal conforming to the RS-232 standard. The microcontroller U13 is communicatively connected to the integrated circuit TDA66 and communicates serially with external devices via the RS-232 interface to achieve bidirectional data transmission. One end of the crystal oscillator X1 is connected to the integrated circuit TDA66 through capacitor C14, and the other end is connected to the integrated circuit TDA66 through capacitor C15.

[0053] When the device information detection module 308 operates, the crystal oscillator generates a stable frequency signal, providing a clock reference for the entire circuit. Driven by the clock signal, the TDA65 integrated circuit processes device diagnostic-related communications, receives and sends diagnostic information, and interacts with the device's control unit. Its output signal undergoes level conversion and signal conditioning via a connected RS-232 interface circuit, converting it into a signal conforming to the RS-232 standard. The MAX232 circuit below further ensures that the microcontroller can maintain stable serial communication with external devices (such as modems and computers) via the RS-232 interface, enabling bidirectional data transmission. Through the coordinated operation of its components, the entire module realizes the communication functions of the device diagnostic system, as well as the connection and data interaction with external devices, providing crucial technical support for device fault diagnosis and maintenance.

[0054] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should be considered within its protection scope.

Claims

1. A mechanized construction near-electric operation safety distance early warning device based on Beidou positioning, characterized in that, It comprises a Beidou positioning unit (2) and a touch all-in-one machine (3); the Beidou positioning unit (2) is located on the top of a construction machine (4); The Beidou positioning unit (2) comprises a Beidou RTK positioning module (206), a first communication module (207) and a first power module (208); the Beidou RTK positioning module (206) is in communication connection with the first communication module (207); the first power module (208) is connected with the Beidou RTK positioning module (206) and the first communication module (207) respectively, for providing required power supply. The touch all-in-one machine (3) comprises an information acquisition and processing module (307), a device information detection module (308), a file storage module (309), a second communication module (310), a touch screen (302) and a second power module (311); the information acquisition and processing module (307) is in communication connection with the device information detection module (308), the file storage module (309), the second communication module (310) and the touch screen (302) respectively; the second power module (311) is connected with the information acquisition and processing module (307), the device information detection module (308), the file storage module (309), the second communication module (310) and the touch screen (302) respectively, for providing required power supply.

2. The Beidou positioning-based mechanized construction near-power operation safety distance early warning device according to claim 1, characterized in that, The device information detection module (308) comprises a crystal oscillator X1, an integrated circuit TDA66, a microcontroller U13, a level signal conversion and conditioning circuit; two ends of the crystal oscillator X1 are connected with the integrated circuit TDA66, for providing a clock reference; the level signal conversion and conditioning circuit is in communication connection with the integrated circuit TDA66, for performing level conversion and signal conditioning on the signal output by the integrated circuit TDA66, and converting it into a signal conforming to the RS-232 standard; the microcontroller U13 is in communication connection with the integrated circuit TDA66, and performs serial communication with external devices through an RS-232 interface, to realize bidirectional transmission of data. 3.The near electric operation safety distance early warning device based on Beidou positioning mechanical construction according to claim 2, characterized in that, One end of the crystal oscillator X1 is connected with the integrated circuit TDA66 through a capacitor C14, and the other end is connected with the integrated circuit TDA66 through a capacitor C15.

4. The Beidou positioning-based mechanized construction near-electricity operation safety distance early warning device according to claim 1 or 2 or 3, characterized in that, The information acquisition and processing module (307) comprises a voltage conversion circuit, a core processing unit, a storage and data interaction unit and an interface unit; the voltage conversion circuit is connected with the core processing unit, for converting a 12V power supply into 5V and 3.3V power supplies; the core processing unit is in communication connection with the storage and data interaction unit and the interface unit respectively.

5. The near-electricity operation safety distance early warning device based on Beidou positioning mechanical construction according to claim 4, characterized in that, The voltage conversion circuit comprises a 12V-to-5V module and a 5V-to-3.3V module; the 12V-to-5V module comprises a power management chip U14, a diode D11, capacitors C25, C26, C27 and C28; a cathode of the diode D11 is connected with one end of the capacitors C26 and C27 and an input end of the power management chip U14 respectively; an output end of the power management chip U14 is connected with one end of the capacitors C25 and C28; the other ends of the capacitors C25, C26, C27 and C28 and a grounding end of the power management chip U14 are all grounded.

6. The Beidou positioning-based mechanized construction near-electricity operation safety distance early warning device according to claim 1 or 2 or 3, characterized in that, The first communication module (207) and the second communication module (310) are 4G / BT / WiFi multi-mode fusion communication modules.

7. The Beidou positioning-based mechanized construction near-electricity operation safety distance early warning device according to claim 1 or 2 or 3, characterized in that, The touch all-in-one machine (3) further includes one or more of a Type-C power interface (303), a micro HDMI interface (304), a gigabit Ethernet (305) port and a USB interface (306).

8. The Beidou positioning-based mechanized construction near-electricity operation safety distance early warning device according to claim 1 or 2 or 3, characterized in that, The positioning unit (2) further includes a USB charging interface (204) and an indicator light (205).

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