A power supply management and control device of a power safety monitoring edge terminal

Abstract

The application relates to the technical field of power safety monitoring, in particular to a power supply management and control device of a power safety monitoring edge terminal. The power supply management and control device is connected with the power safety monitoring edge terminal, and the device comprises a power management loop, a power supply tree and a start-stop machine loop. The power management loop manages and detects external power input to the terminal and outputs a first safety voltage, thereby providing an initial safety voltage for the terminal, improving the operation stability and safety of the terminal and reducing the adverse effects of external power abnormalities on the operation of the terminal. The power supply tree of the application performs hierarchical processing on the first safety voltage, thereby providing safe and effective voltage support for each device of the power safety monitoring edge terminal and further improving the stability of the terminal operation. The start-stop machine loop of the application responds to the voltage signal output by the power supply tree and the control signal output by the terminal, starts and stops the power safety edge monitoring terminal, and improves the stability and reliability of the terminal operation.

Description

Technical Field

[0001] This invention relates to the field of power safety monitoring technology, and in particular to a power control device for a power safety monitoring edge terminal. Background Technology

[0002] With the rapid development of the social economy and the continuous improvement of science and technology, my country's power industry has developed rapidly in recent years. Power construction sites are characterized by complex working environments, dispersed personnel, and numerous pieces of equipment. Safety supervision departments find it difficult to conduct multi-level, long-term real-time monitoring and supervision, and to quickly and effectively integrate and comprehensively evaluate multi-dimensional information data such as the qualifications of on-site personnel, work procedures, working environment information, equipment status information, and electrical parameter information.

[0003] To strengthen effective safety supervision and monitoring of all aspects of on-site operations and construction environments, including personnel, machinery, materials, methods, and environment, and to promptly identify potential safety hazards, existing technologies rely on on-site safety management and control equipment for power operations. However, the operational stability of this equipment directly impacts the level of safety monitoring; therefore, improving the operational stability of such equipment has become a pressing technical challenge. Summary of the Invention

[0004] This invention provides a power management device for a power safety monitoring edge terminal, which improves the operational stability of the power safety monitoring edge terminal.

[0005] This invention provides a power management device for a power safety monitoring edge terminal. The power management device is connected to the power safety monitoring edge terminal and includes: a power management loop, a power tree, and a start / stop loop.

[0006] The power management circuit is used to receive external power, manage the external power, and output a first safe voltage;

[0007] The power tree is connected to the power management loop, the power safety monitoring edge terminal, and the start-stop loop, respectively, and is used to receive the first safety voltage, perform hierarchical processing on the first safety voltage to obtain each hierarchical voltage, and transmit each hierarchical voltage to the power safety monitoring edge terminal and the start-stop loop respectively.

[0008] The start / stop circuit is connected to the power tree and the power safety monitoring edge terminal, and is used to start and stop the power safety edge monitoring terminal in response to the voltage signal output by the power tree and the control signal output by the power safety monitoring edge terminal.

[0009] Optionally, the power management circuit includes: a power protection module, a power switching module, a peripheral power supply switch module, and a backup power module;

[0010] The power protection module is connected to the power switching module and the peripheral power supply switch module respectively, and is used to receive external power, perform safety detection on the external power, and output a first safety voltage after the detection is passed.

[0011] The power switching module is connected to the power protection module and the backup power module respectively, and is used to switch between the external power supply and the backup power module; the backup power module is used to provide a backup first safety voltage.

[0012] The peripheral power supply switch module is connected to the power protection module and is used to receive the first safety voltage to supply power to the peripheral device.

[0013] Optionally, the power protection module includes: a power socket, a protection circuit, and a protection circuit;

[0014] The power socket is connected to the protection circuit and the protection circuit respectively, and is used to receive the input external power and transmit the external power to the protection circuit and the protection circuit;

[0015] The protection circuit is connected to the protection circuit and is used to perform a first preprocessing on the external power supply to obtain a first target power supply, and transmit the first target power supply to the protection circuit; the first preprocessing includes voltage clamping and filtering.

[0016] The protection circuit is connected to the power switching module and the peripheral power supply switch module, and is used to perform reverse connection detection and overvoltage detection on the first target power supply, and output a first safe voltage after the detection is passed.

[0017] Optionally, the protection circuit includes: a first transient diode, a varistor, and a filter;

[0018] The power socket is connected in sequence to the first terminal of the first transient diode, the first terminal of the varistor, and the first terminal of the filter;

[0019] The second terminal of the first transient diode is grounded; the second terminal of the varistor is grounded; the second terminal of the filter is grounded.

[0020] The third terminal of the filter is connected to the protection circuit and is used to output the first target power supply.

[0021] Optionally, the protection circuit includes: a first switching transistor, a current-limiting resistor, a second transient diode, a first transistor, a second transistor, a first voltage-dividing resistor, a second voltage-dividing resistor, and a second switching transistor;

[0022] The first terminal of the first switching transistor is connected to the protection circuit, and the second terminal of the first switching transistor is connected to the first terminal of the current-limiting resistor, the third terminal of the second transistor, the first terminal of the first voltage divider, and the second terminal of the second switching transistor; the third terminal of the first switching transistor is connected to the second terminal of the first transistor.

[0023] The first end of the first transistor is connected to the output end of the power socket;

[0024] The third terminal of the first transistor, the second terminal of the second transient diode, and the second terminal of the second voltage divider resistor are all grounded.

[0025] The second end of the current-limiting resistor is connected to the first end of the second transient diode and the first end of the second transistor, respectively.

[0026] The second terminal of the second transistor is connected to the second terminal of the first voltage divider resistor, the first terminal of the voltage divider resistor, and the third terminal of the second switching transistor, respectively.

[0027] The first end of the second switching transistor is connected to the power switching module and the peripheral power supply switching module.

[0028] Optionally, the power switching module includes: a third switching transistor, a fourth switching transistor, and a fifth switching transistor; the backup power module includes: a charging module, a smart battery, a first voltage regulator, and a power detection module.

[0029] The protection circuit is connected to the first terminal of the third switching transistor;

[0030] The second end of the third switch is connected to the first end of the charging module and the first end of the fourth switch, respectively; the second end of the fourth switch is connected to the second end of the fifth switch.

[0031] The second end of the charging module is connected to the first end of the fifth switching transistor, the smart battery, the first voltage regulator, and the power detection module, respectively.

[0032] The first voltage regulator is connected to the power detection module;

[0033] The second terminal of the fifth switch is connected to the power tree.

[0034] Optionally, the peripheral power supply switch module includes: a first switch module and a second switch module;

[0035] The power socket is connected to the second end of the second switch module;

[0036] The second terminal of the first switch module is connected to the protection circuit;

[0037] The first terminal of the first switch module is connected to an external device;

[0038] The third terminal of the first switch module is connected to the first terminal of the second switch module;

[0039] The third terminal of the second switch module is grounded.

[0040] Optionally, the power tree includes: a first voltage conversion module, a second voltage conversion module, a third voltage conversion module, a fourth voltage conversion module, a fifth voltage conversion module, a sixth voltage conversion module, a boost module, a first discharge circuit, a second discharge circuit, a third discharge circuit, a fourth discharge circuit, a fifth discharge circuit, a sixth discharge circuit, a second voltage regulator, and a NOT gate;

[0041] The power management circuit is connected to the first voltage conversion module, the second voltage conversion module, the third voltage conversion module, and the fifth voltage conversion module, respectively.

[0042] The first voltage conversion module is connected to the power safety monitoring edge terminal and the second voltage regulator, respectively;

[0043] The second voltage regulator is connected to the start-stop circuit;

[0044] The start / stop circuit is connected to the power safety monitoring edge terminal, the NOT gate, the second voltage conversion module, the third voltage conversion module, the fourth voltage conversion module, the fifth voltage conversion module, the sixth voltage conversion module, and the boost module, respectively.

[0045] The NOT gate is connected to the first discharge circuit, the second discharge circuit, the third discharge circuit, the fourth discharge circuit, the fifth discharge circuit, and the sixth discharge circuit, respectively.

[0046] The second voltage conversion module is connected to the fourth voltage conversion module, the boost module, the first discharge circuit, and the first device component of the power safety monitoring edge terminal, respectively.

[0047] The third voltage conversion module is connected to the fourth device component and the second discharge circuit of the power safety monitoring edge terminal, respectively.

[0048] The fourth voltage conversion module is connected to the sixth voltage conversion module, the fourth discharge circuit, and the second device component of the power safety monitoring edge terminal, respectively.

[0049] The fifth voltage conversion module is connected to the fifth discharge circuit and the fifth device component of the power safety monitoring edge terminal, respectively.

[0050] The sixth voltage conversion module is connected to the sixth discharge circuit and the third device component of the power safety monitoring edge terminal, respectively.

[0051] The boost module is connected to the third discharge circuit and the sixth device component of the power safety monitoring edge terminal.

[0052] Optionally, the first discharge circuit, the second discharge circuit, the third discharge circuit, the fourth discharge circuit, the fifth discharge circuit, and the sixth discharge circuit all include a discharge resistor and a third switch module;

[0053] The first end of the discharge resistor is the power input terminal;

[0054] The second end of the discharge resistor is connected to the first end of the third switch module, the second end of the third switch module is grounded, and the third end of the third switch module is connected to the NOT gate.

[0055] Optionally, the start / stop circuit includes: a first AND gate, a second AND gate, a third AND gate, a reset module, and a watchdog module;

[0056] The power management circuit is connected to the power switch, the power switch is connected to the delay circuit, and the delay circuit is connected to the input terminal of the first voltage conversion module.

[0057] The power switch is connected to the second voltage divider module, and the second voltage divider module is connected to the first input terminal of the first AND gate.

[0058] The output of the first voltage conversion module is connected to the first voltage divider module, and the first voltage divider module is connected to the second input of the first AND gate.

[0059] The output terminal of the first voltage conversion module is connected to the third voltage divider module, and the third voltage divider module is connected to the reset module and the third input terminal of the first AND gate, respectively.

[0060] The output of the first AND gate is connected to the power safety monitoring edge terminal and the first input of the third AND gate, respectively.

[0061] The power safety monitoring edge terminal is connected to the watchdog module, the second input terminal of the second AND gate, and the second input terminal of the third AND gate, respectively.

[0062] The watchdog module is connected to the first input terminal of the second AND gate; the output terminal of the second AND gate is connected to the reset module.

[0063] The output of the third AND gate is connected to the NOT gate, the second voltage conversion module, the third voltage conversion module, the fourth voltage conversion module, the fifth voltage conversion module, the sixth voltage conversion module, and the boost module, respectively.

[0064] As can be seen from the above technical solutions, the present invention has the following advantages:

[0065] The present invention provides a power management device for a power safety monitoring edge terminal. The power management circuit manages and detects the external power input to the terminal and outputs a first safety voltage, providing an initial safety voltage for the terminal, thereby improving the terminal's operational stability and safety, and reducing the adverse effects of external power abnormalities on terminal operation. Furthermore, the power tree of the present invention performs hierarchical processing of the first safety voltage, thereby providing safe and effective voltage support for each device of the power safety monitoring edge terminal, further improving the stability of terminal operation. Additionally, the start / stop circuit of the present invention responds to the voltage signal output by the power tree and the control signal output by the terminal, starting and stopping the power safety edge monitoring terminal, improving the stability and reliability of terminal operation. Attached Figure Description

[0066] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0067] Figure 1 A simplified structural diagram of a power management device for a power safety monitoring edge terminal provided in an embodiment of the present invention;

[0068] Figure 2 A simplified diagram illustrating the connection relationship of a power management device for a power safety monitoring edge terminal, provided in an embodiment of the present invention;

[0069] Figure 3 This invention provides a general connection diagram of a power management device for a power safety monitoring edge terminal.

[0070] Figure 4 A schematic diagram of the power management circuit provided in an embodiment of the present invention;

[0071] Figure 5 This is a schematic diagram of the protection circuit provided in an embodiment of the present invention;

[0072] Figure 6 A schematic diagram of the protection circuit provided in an embodiment of the present invention;

[0073] Figure 7 This is a schematic diagram of the peripheral power supply switch module provided in an embodiment of the present invention;

[0074] Figure 8 This is a schematic diagram of the power tree structure provided in an embodiment of the present invention;

[0075] Figure 9 This is a schematic diagram of the discharge circuit provided in an embodiment of the present invention;

[0076] Figure 10 This is a schematic diagram of the start-stop circuit provided in an embodiment of the present invention. Detailed Implementation

[0077] This invention provides a power management device for a power safety monitoring edge terminal, which improves the operational stability of the power safety monitoring edge terminal.

[0078] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0079] The following describes the power safety monitoring edge terminal used in this invention.

[0080] This power safety monitoring edge terminal, used to monitor the safety of power field operations, includes: a motherboard and an HDMI multimedia interface; the motherboard is equipped with an AI processor module, a Bluetooth daughterboard, a LoRa daughterboard, a high-precision positioning module, and a network module; the AI ​​processor module is connected to the LoRa daughterboard via an SPI terminal group; the AI ​​processor module is connected to the Bluetooth daughterboard via a UART terminal for data interaction with power field equipment, receiving and processing operation data transmitted by the equipment. The AI ​​processor module is connected to the high-precision positioning module via a UART terminal to obtain the location information of target objects, including power operation tools and / or power operation personnel. The AI ​​processor module is connected to the HDMI multimedia interface to receive image data from the power operation site and identify the image data according to a preset power safety identification scheme. The network module is connected to the AI ​​processor module for uploading data.

[0081] It should be noted that the power field equipment is a device that supports Bluetooth connectivity or LoRa communication.

[0082] In this invention, the LoRa daughterboard is connected to various safety sensors at the power site to receive safety sensing information transmitted by each safety sensor. The safety sensors can be various types of sensors or other safety detection devices. For example, when the safety sensor is a height detection sensor, the corresponding safety sensing information is personnel climbing information; when the safety sensor is a proximity detection device, the corresponding safety sensing information is proximity alarm information; and when the safety sensor is a seat belt wearing detection device, the corresponding safety sensing information is seat belt wearing status information.

[0083] The system connects to on-site smart power equipment via Bluetooth daughterboard, enabling data exchange and obtaining relevant information. This smart power equipment can be existing smart safety belts, smart positioning devices, smart grounding wires, or other smart power tools. For example, when communicating with a smart grounding wire, it can receive the wire's mounting position information and determine whether the worker is operating correctly. If a violation is detected, an on-site alarm is triggered. Similarly, when communicating with a safety belt wearing detection device, it receives the device's safety belt wearing status information and determines whether the worker is wearing the safety belt correctly. If not, an on-site alarm is triggered.

[0084] Electrical work equipment refers to the tools used by workers during electrical work, such as safety belts. The high-precision positioning module uses a single antenna and a serial port interface, and has a built-in 4G communication module. It can acquire reference information via 4G signals and supports dual-frequency BeiDou, GPS, GLONASS, etc. In RTK (Real-Time Kinematic) mode, the positioning accuracy is at the centimeter level. The reference information comes from the reference information of a dedicated RTK base station or the 4G signal; the single antenna is a dedicated GPS / BeiDou positioning antenna.

[0085] The power safety identification scheme refers to the identification algorithm corresponding to power operation scenarios. These scenarios can include wearing power work uniforms / safety helmets, wearing high-altitude work equipment, and installing grounding wires. For example, when installing a grounding wire, the identification algorithm identifies the grounding wire in the image data and obtains the identification result.

[0086] Therefore, in practical applications, corresponding recognition algorithms can be pre-deployed in the AI ​​processor module according to the specific power operation scenario, thereby achieving comprehensive and multi-dimensional effective real-time monitoring of the power operation site.

[0087] In this embodiment, the AI ​​processor module intelligently processes received work data, location information, and image recognition results through aggregation, data fusion, and correlation analysis. It performs a comprehensive safety risk assessment of power operations (such as uniform / safety helmet wearing, operating procedures, location and overstepping limits, wearing of safety belts for working at heights, use of safety tools, grounding wire placement, etc.), thereby achieving comprehensive and multi-dimensional real-time monitoring of the power work site. The processed data is then uploaded to the backend system, reducing the computational resource consumption of the backend system and alleviating the pressure on power safety supervision. For example, when placing grounding wires, the AI ​​processor module can determine whether the worker has correctly placed the grounding wire by fusing the worker's location information with the image recognition results and location information of the grounding wire. If the result is incorrect, an on-site alarm is triggered, and the corresponding result is uploaded to the backend system. Furthermore, when applying power production safety assessments, the AI ​​processor module can correlate multiple recognition results of the same worker and then transmit the correlated data to the system, facilitating data analysis and assessment by management personnel.

[0088] In the power safety monitoring edge terminal applied in this invention, the AI ​​processor module, Bluetooth daughterboard, and LoRa daughterboard communicate and interact with various power devices in the field, providing rich communication functions. Through the high-precision positioning module of the AI ​​processor module, the target objects at the power operation site are located. Furthermore, through the AI ​​processor module and the HDMI multimedia interface, image data from the power operation site is recognized, enabling multi-dimensional safety supervision of the power operation site. The AI ​​processor module is also connected to the network module for uploading data to the backend system, thereby reducing the computational resource consumption of the backend system based on edge computing technology and alleviating the power safety supervision pressure on the backend system. Moreover, by assembling the AI ​​processor module, Bluetooth daughterboard, LoRa daughterboard, high-precision positioning module, and network module on a motherboard, this invention achieves high integration, reducing the size and weight of the edge terminal and improving its portability.

[0089] Specifically, the Bluetooth daughterboard is fixed to the motherboard using PIN pins to interact with various electrical devices in the field and to transmit interactive information; the AI ​​processor module communicates with the Bluetooth daughterboard and receives the interactive information transmitted by the Bluetooth daughterboard.

[0090] Specifically, the AI ​​processor module includes one GPU and three CPUs. The GPU uses the Volta architecture and integrates 384 CUDA cores and 48 Tensor cores. The three CPUs use the Carmel architecture, with each CPU being a dual-core ARMv8.2 64-bit CPU.

[0091] Specifically, the network module includes a 4G module and a WAPI sub-device. The terminal uploads the data processing results from the AI ​​processor module to the system via the 4G module. The 4G module includes a first 4G module and a second 4G module. The 4G module uses a high-level LTE module with a MINI-PCIe interface and a USB 2.0 communication interface. The model number of the 4G module is EC200.

[0092] Specifically, the power safety monitoring edge terminal also includes: a USB hub module and an interface protection board; the AI ​​processor module is connected to the USB hub module, and is connected to the interface protection board and network module through the USB hub module, and is connected to the multimedia interface HDMI through the interface protection board.

[0093] The USB hub module includes a first USB hub (USB-HUB1) and a second USB hub (USB-HUB2). Both the first USB hub (USB-HUB1) and the second USB hub (USB-HUB2) use a USB-HUB chip to provide multiple USB 2.0 interfaces. The USB-HUB is a 1-to-7 port chip, packaged in a 48-pin LQFP package.

[0094] The AI ​​processor module is connected to the first USB hub USB-HUB1 via a USB 2.0 terminal block. The first USB hub USB-HUB1 includes a first USB 2.0 expansion port, a second USB 2.0 expansion port, and a third USB 2.0 expansion port. The first USB 2.0 expansion port is connected to the first 4G module. The second USB 2.0 expansion port is a reserved port for connecting to a reserved M.2 port. The third USB 2.0 expansion port is used for connecting to the USB 2.0 ports of peripherals.

[0095] The AI ​​processor module is connected to a second USB hub (USB-HUB2) via USB 2.0 connectors. The second USB hub (USB-HUB2) includes a fourth and a fifth USB 2.0 expansion port. The fourth USB 2.0 expansion port connects to the second 4G module; the fifth USB 2.0 expansion port connects to port 1 of the interface protection board. The HDMI port of the AI ​​processor module connects to the interface protection board, which in turn connects to the HDMI multimedia interface to reduce the risk of interface damage. The interface protection board includes a power overcurrent protection chip and an ESD (Electrostatic Discharge) protection circuit. The power overcurrent protection chip limits the current to 1A to prevent damage to the signal interface due to short circuits; the ESD protection circuit prevents electrostatic discharge.

[0096] In addition, the AI ​​processor module is connected to the second port of the interface protection board via a USB 3.0 terminal block. The interface protection board is connected to the USB 3.0 interface used for connecting to peripherals, reducing the risk of peripheral damage.

[0097] Specifically, the power safety monitoring edge terminal also includes a temperature measurement module and a fan; the temperature measurement module is used to collect the temperature data of the terminal and transmit the temperature data to the AI ​​processor module; the AI ​​processor module is connected to the temperature measurement module through the I2C terminal group and to the fan through the GPID terminal, which is used to receive the temperature data and start and stop the fan according to the temperature data.

[0098] The temperature measurement module collects internal temperature data from the terminal and transmits it to the AI ​​processor module. The temperature measurement module uses an external temperature sensing chip to implement the device's temperature measurement function. The AI ​​processor module controls the fan's start and stop based on the temperature data collected by the temperature measurement module, thereby maintaining the terminal's temperature at a normal level and preventing overheating from affecting its operation. For example, if the temperature exceeds a preset high-temperature threshold, it indicates that the current temperature is too high and could easily affect the terminal's operation; therefore, the fan is activated to cool the terminal and maintain its temperature at a normal level.

[0099] Specifically, the power safety monitoring edge terminal also includes: an LCD sub-board; the LCD sub-board is connected to the motherboard via a 24-pin FPC socket and a double-ended cable, and is connected to the AI ​​processor module via an I2C terminal block for receiving display control signals output by the AI ​​processor module, and is used to display terminal data, including battery level, SIM1 and SIM2 signals, Bluetooth and GNSS icons, etc.

[0100] The LCD sub-board includes an LCD display screen and LED indicator lights. The LED indicator lights are discrete LEDs, including: a power indicator light (integrated with the power switch), an alarm indicator light (red), and a tri-color LED light, used to alert the user. The LCD display screen is used to display terminal data.

[0101] Specifically, the power safety monitoring edge terminal also includes a decoding module, a voice power amplifier module, and a speaker;

[0102] The AI ​​processor module connects to the decoding module via an I2S terminal block. The decoding module is connected to the voice amplifier module to decode the digital audio signal output by the AI ​​processor module and convert it into analog voice output to the voice amplifier module. The voice amplifier module is connected to a speaker to amplify the output analog voice and drive the speaker for playback. The speaker is an external speaker.

[0103] Specifically, the decoding module uses a decode chip, while the voice amplifier module uses an audio amplifier chip, AudioPA. The Audio PA is a high-efficiency, 9.0W mono audio amplifier with switchable AB / D class modes.

[0104] Specifically, the power safety monitoring edge terminal also includes a real-time clock module. This module connects to the AI ​​processor module via an I2C terminal block to record real-time time. The real-time clock module uses an external RTC to implement its function, connected to an external 32.768K crystal oscillator and a coin cell battery, allowing for extended periods of operation even without power.

[0105] In one specific embodiment, the motherboard is also equipped with a debugging interface module; the debugging interface module includes a debugging serial port and an upgrade port; the AI ​​processor module is connected to the debugging serial port through a UART terminal group, and the debugging serial port is used to provide a debugging entry point for hot debugging of the program; the AI ​​processor module is connected to the upgrade port (Micro USB) through a USB2 terminal group; the upgrade port (Micro USB) is used to provide a debugging entry point for cold debugging of the program.

[0106] Specifically, the power safety monitoring edge terminal also includes alarm indicator lights; the alarm indicator lights are connected to the AI ​​processor module through GPIO terminal blocks and are used to provide low temperature alarms or over-temperature alarms.

[0107] It should be noted that when the detected temperature is lower than the preset low temperature threshold, the alarm indicator LED will issue a low temperature alarm; when the detected temperature is higher than the preset high temperature threshold, the alarm indicator LED will issue a high temperature alarm. The low temperature threshold and high temperature threshold can be set according to actual conditions.

[0108] Specifically, the power safety monitoring edge terminal also includes a memory module; the memory module is connected to the AI ​​processor module via an I2C terminal block and is used to store data.

[0109] Specifically, the motherboard is also equipped with a hard drive module, which is connected to the AI ​​processor module via a PCIe connector.

[0110] It should be noted that the hard drive module is a solid-state drive (SSD). The capacity of the SSD can be selected according to the actual situation, for example, a 128G capacity can be used.

[0111] Specifically, this also includes: upgrading the DIP switch board. The AI ​​processor module is connected to the upgrade DIP switch via the FORCE_RECOVERY terminal block. In practical applications, the FORCE_RECOVERY is grounded by using the DIP switch, thereby putting the AI ​​processor module into flashing mode.

[0112] Specifically, the power safety monitoring edge terminal also includes: a reserved M2 interface; the AI ​​processor module connects to the reserved M2 interface via SPI terminals, SDIO terminals, I2S terminals, and I2C terminal blocks. The reserved M2 interface is used to connect to extended peripherals. It is understood that those skilled in the art can expand the corresponding peripherals according to their own needs and access them into the terminal through this reserved M2 interface.

[0113] Specifically, the AI ​​processor module is connected to the reset button via the GPID terminal block, and the reset button is used to reset the terminal.

[0114] Please see Figures 1-3 This invention provides a power management device for a power safety monitoring edge terminal. The power management device is connected to the power safety monitoring edge terminal and includes: a power management loop, a power tree, and a start / stop loop.

[0115] The power management circuit is used to receive and manage external power, and output a first safe voltage.

[0116] The power tree is connected to the power management loop, the power safety monitoring edge terminal, and the start-stop loop, respectively. It is used to receive the first safety voltage, perform hierarchical processing on the first safety voltage to obtain each hierarchical voltage, and transmit each hierarchical voltage to the power safety monitoring edge terminal and the start-stop loop, respectively.

[0117] The start / stop circuit is connected to the power tree and the power safety monitoring edge terminal. It is used to start and stop the power safety edge monitoring terminal in response to the voltage signal output by the power tree and the control signal output by the power safety monitoring edge terminal.

[0118] In the power management device for a power safety monitoring edge terminal provided in this embodiment, the power management loop manages and detects the external power input to the terminal and outputs a first safety voltage to provide an initial safety voltage for the terminal, thereby improving the operational stability and safety of the terminal and reducing the adverse effects of abnormal external power supply on the terminal operation. Furthermore, the power tree in this embodiment performs hierarchical processing of the first safety voltage, thereby providing safe and effective voltage support for each device of the terminal and further improving the operational stability of the terminal. In addition, the start-stop loop in this embodiment responds to the voltage signal output by the power tree and the control signal output by the terminal, detects the status of the terminal, and starts or stops the power safety edge monitoring terminal when necessary, thereby improving the operational stability and reliability of the terminal.

[0119] In one specific embodiment, the power management loop includes: a power protection module, a power switching module, a peripheral power supply switch module, and a backup power module;

[0120] The power protection module is connected to the power switching module and the peripheral power supply switch module respectively. It is used to receive external power, perform safety detection on the external power, and output the first safety voltage after the detection is passed.

[0121] The power switching module is connected to the power protection module and the backup power module respectively, and is used to switch between the external power supply and the backup power module; the backup power module is used to provide a backup first safety voltage.

[0122] The peripheral power supply switch module is connected to the power protection module to receive the first safe voltage and supply power to the peripherals.

[0123] like Figure 4 As shown, the power protection module provides a power input interface. When an external power source is connected, the module performs a first preprocessing step to reduce interference from other irrelevant signals. Then, it performs a safety check on the preprocessed external power source. This safety check includes reverse connection detection and overvoltage detection. Reverse connection detection checks if the positive and negative terminals of the external power source are reversed. If so, the external power input is stopped; otherwise, the check passes. Overvoltage detection checks if the voltage of the external power source exceeds a preset overvoltage setting. If so, the external power input is stopped; otherwise, the check passes. When both reverse connection and overvoltage detections pass, the external power supply safety check is successful, and the external power supply can continue to be input. Otherwise, the external power input is stopped to prevent abnormal external power sources from adversely affecting the stable operation of the terminal.

[0124] When the external power supply safety test passes, the power switching module allows the external power supply to serve as the terminal's power source, outputting a first safe voltage. Simultaneously, it connects the backup power module to the external power supply, allowing the external power supply to charge the backup power module. When the external power supply safety test fails or is not connected, the power switching module switches to the backup power module, connecting its output to the power tree, thus enabling the backup power module to output the first safe voltage. Therefore, this embodiment, by incorporating a power switching module and a backup power module, avoids situations where an external power supply malfunction causes the terminal to suspend operation, affecting the stability of the terminal's operation.

[0125] When the external power supply passes the safety test, the first safety voltage is also transmitted to the peripheral power supply switch module, thereby turning on the peripheral power supply switch module and providing safe and appropriate power to the peripheral devices connected to the power safety monitoring edge terminal, thus improving the safety and reliability of the terminal operation.

[0126] In a specific embodiment, such as Figure 4 As shown, the power protection module includes: a power socket, a protection circuit, and a protection circuit.

[0127] The power socket is connected to the protection circuit and the safety circuit respectively, and is used to receive the input external power and transmit the external power to the protection circuit and the safety circuit.

[0128] The protection circuit is connected to the protection circuit and is used to perform a first preprocessing on the external power supply to obtain a first target power supply, and to transmit the first target power supply to the protection circuit; the first preprocessing includes voltage clamping and filtering;

[0129] The protection circuit, connected to the power switching module and the peripheral power supply switch module, is used to perform reverse connection detection and overvoltage detection on the first target power supply, and outputs the first safe voltage after the detection is passed.

[0130] It should be noted that the first preprocessing includes voltage clamping and filtering. An M12 power socket (8-pin) can be selected. An external power supply with a specification of 15V / 10A can be selected.

[0131] When an external power source is connected, the external power source is inserted into the power socket and enters the protection circuit through the power socket. The protection circuit performs a first preset processing on the external power source and outputs a first target power source to the protection circuit after processing. The protection circuit performs a safety test on the first target power source. When the test passes, it outputs a first safe voltage to the power switching module and outputs it to the power tree through the power switching module.

[0132] In this embodiment, the first safe voltage output is 11.1V.

[0133] In one specific embodiment, see Figure 4 The protection circuit includes: a first transient diode, a varistor, and a filter;

[0134] The power socket is connected in sequence to the first terminal of the first transient diode, the first terminal of the varistor, and the first terminal of the filter;

[0135] The second terminal of the first transient diode is grounded; the second terminal of the varistor is grounded; the second terminal of the filter is grounded.

[0136] The third terminal of the filter is connected to the protection circuit and is used to output the first target power supply.

[0137] It should be noted that a transient voltage suppressor (TVS) is a special type of PN junction device. Compared to ordinary diodes, TVS diodes have higher breakdown voltage and power. Under normal operation, the resistance of a TVS diode is very high, and it does not affect the signal. However, when its operating voltage exceeds the specified operating range, the TVS diode will break down, thus momentarily conducting to protect downstream circuits. Once the overvoltage disappears, the TVS diode returns to its normal high-resistance state, thus avoiding interference with normal circuit operation. A varistor is a non-linear resistive element whose resistance is related to the voltage applied across its terminals. When the voltage across the varistor is within its nominal value, the varistor's resistance is infinite, and almost no current flows. It can be used for overvoltage protection. When an overvoltage occurs, the varistor breaks down, short-circuiting, thus clamping the voltage across its terminals to a lower level to protect the circuit. In this embodiment, an EMC filter can be selected to filter the power supply signal and improve the device's anti-interference capability.

[0138] like Figures 4-5 As shown, when an external power supply is connected, the external power supply enters through the power socket and from the VIN-GND terminals of the protection circuit, passes through the first transient diode, varistor and filter, and is output from the third terminal of the filter as the output terminal (VOUT), outputting the first target power supply.

[0139] This embodiment improves the safety and stability of the device operation by setting a first transient diode, a varistor, and a filter to perform a first preprocessing on the external power supply connected to the device.

[0140] In one specific embodiment, the protection circuit includes: a first switching transistor MOS1, a current-limiting resistor, a second transient diode, a first transistor, a second transistor, a first voltage divider resistor, a second voltage divider resistor, and a second switching transistor MOS2;

[0141] The first terminal of the first switching transistor MOS1 is connected to the protection circuit. The second terminal of the first switching transistor MOS1 is connected to the first terminal of the current limiting resistor, the third terminal of the second transistor, the first terminal of the first voltage divider, and the second terminal of the second switching transistor MOS2. The third terminal of the first switching transistor MOS1 is connected to the second terminal of the first transistor.

[0142] The first terminal of the first transistor is connected to the output terminal of the power socket;

[0143] The third terminal of the first transistor, the second terminal of the second transient diode, and the second terminal of the second voltage divider resistor are all grounded.

[0144] The second end of the current-limiting resistor is connected to the first end of the second transient diode and the first end of the second transistor, respectively.

[0145] The second terminal of the second transistor is connected to the second terminal of the first voltage divider resistor, the first terminal of the voltage divider resistor, and the third terminal of the second switching transistor MOS2, respectively.

[0146] The third terminal of the second switching transistor MOS2 is connected to the power switching module.

[0147] It should be noted that the first switching transistor MOS1 is used to receive the first target power supply input from the protection circuit, and the first transistor is used to receive the input from the external power supply. The resistance values ​​of the first voltage divider resistor and the second voltage divider resistor can be set according to the actual situation to meet the conduction conditions of the second switching transistor MOS2.

[0148] The first switching transistor MOS1 and the second switching transistor MOS2 can be MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors). The first terminal of the first switching transistor MOS1 is the drain (D), the second terminal is the source (S), and the third terminal is the gate (G), providing reverse connection protection. The first terminal of the second switching transistor MOS2 is the drain, the second terminal is the source, and the third terminal is the gate. The first terminal of the first transistor is the base (B), the second terminal is the collector (C), and the third terminal is the emitter (E).

[0149] In this embodiment, as Figure 6 As shown, a shorting tab is provided between the two prongs of the power socket. When the external power supply is not plugged in, the shorting tab is open, and there is no conduction between the collector C and source E of the first transistor. At the same time, the first switching transistor MOS1 is turned off, and the interference power supply on the VIN-GND terminal cannot be input from the first switching transistor MOS1. When the external power supply is plugged in, the shorting tab of the power socket is connected, and the voltage (VCC) of the external power supply enters the base B of the first transistor through the power socket, thereby conducting between the collector C and source E of the first transistor. Simultaneously, combined with the voltage input from the protection circuit at the first terminal of the first switching transistor MOS1, the first switching transistor MOS1 is turned on, and the protection circuit is activated.

[0150] The protection circuit is used for reverse connection detection and overvoltage detection, thereby achieving reverse connection protection and overvoltage protection. Reverse connection detection is achieved by the first switching transistor MOS1 and the first transistor, while overvoltage detection is achieved by an overvoltage protection circuit consisting of a current-limiting resistor, a second transient diode, a second transistor, a first voltage divider resistor, a second voltage divider resistor, and the second switching transistor MOS2.

[0151] The power output from the protection circuit is connected to the VIN-GND terminals of the protection circuit and input to the first switching transistor MOS1 for reverse connection detection. When the positive and negative terminals of the input first target power supply are reversed, the first switching transistor MOS1 does not conduct, thus providing protection. When the positive and negative terminals of the input first target power supply are correct, the first switching transistor MOS1 conducts and enters the current-limiting resistor and the second transient diode of the overvoltage protection circuit.

[0152] When the input voltage of the first target power supply is less than the preset overvoltage setting value, the second transient diode does not conduct, the current flowing through the current-limiting resistor is zero, the voltage between the base (B) and emitter (E) of the second transistor is low, and the collector (C) and emitter (E) of the second transistor do not conduct. Therefore, the first target power supply, through the voltage divider resistor, turns on the second switching transistor MOS2, thereby outputting the first safe voltage at the drain (D) of the second switching transistor MOS2. It can be understood that the voltage between the gate (G) and source (S) of the second switching transistor MOS2 is the voltage after being divided by the first and second voltage divider resistors. By setting the values ​​of the first and second voltage divider resistors, the voltage between the gate (G) and source (S) of the second switching transistor MOS2 is made to meet the conduction condition of the second switching transistor MOS2, thus allowing the normal first target power supply voltage to be output through the first terminal of the second switching transistor MOS2.

[0153] When the voltage of the input first target power supply exceeds the preset overvoltage setting value, the second transient diode conducts, thereby making the voltage between the base (B) and emitter (E) of the second transistor high, thus turning on the second transistor. The conduction of the second transistor makes the voltage between the gate (G) and source (S) of the second switching transistor MOS2 zero, thereby turning off the second switching transistor MOS2 and preventing abnormal power supply output from affecting the stable operation of the terminal.

[0154] In one specific embodiment, the peripheral power supply switch module includes: a first switch module and a second switch module; a power socket is connected to a second terminal of the second switch module; the second terminal of the first switch module is connected to a protection circuit; the first terminal of the first switch module is connected to a peripheral device; the third terminal of the first switch module is connected to the first terminal of the second switch module; and the third terminal of the second switch module is grounded.

[0155] It should be noted that the first switching module uses a P-type MOSFET, while the second switching module uses an N-type MOSFET. In the first switching module MOS1, the first terminal is the drain of the MOSFET, the second terminal is the source, and the third terminal is the gate. In the second switching module MOS2, the first terminal is the drain, the second terminal is the source, and the third terminal is the gate.

[0156] In this embodiment, the gate of the first switching module is connected to the drain of the second switching transistor MOS2. The source of the first switching module is used to receive the power supply voltage output by the protection circuit, and its drain is connected to the peripheral device to output power to the peripheral device, thereby providing a normal and stable power supply to the peripheral device. The peripheral device can be selected according to the actual monitoring situation; for example, the peripheral device could be a PTZ camera.

[0157] The principle of this embodiment is as follows: Figure 7 As shown, when an external power supply is plugged in, two pins of the power socket (8-pin) are short-circuited, thus establishing a connection between VCC and the second switching module. This connects the drain and source of the second switching module, causing the gate of the first switching transistor MOS1 to be grounded through the second switching transistor MOS2. Consequently, the source and drain of the first switching transistor MOS1 are connected, allowing the power output from the protection circuit to be supplied to the peripheral device through the first switching transistor MOS1, providing a safe and reliable power supply. When the external power supply is not plugged in, the connection between VCC and the gate of the second switching transistor MOS2 is broken, and the second switching transistor MOS2 is turned off. Therefore, the first switching transistor MOS1 cannot supply power to the peripheral device, preventing damage caused by abnormal power supply.

[0158] In a specific embodiment, such as Figure 4 As shown, the power switching module includes: a third switching transistor MOS3, a fourth switching transistor MOS4, and a fifth switching transistor MOS5; the backup power module includes: a charging module, a smart battery, a first voltage regulator LDO1, and a power detection module; the protection circuit is connected to the first terminal of the third switching transistor MOS3; the second terminal of the third switching transistor MOS3 is connected to the first terminal of the charging module and the first terminal of the fourth switching transistor MOS4 respectively; the second terminal of the fourth switching transistor MOS4 is connected to the second terminal of the fifth switching transistor MOS5; the second terminal of the charging module is connected to the first terminal of the fifth switching transistor MOS5, the smart battery, the first voltage regulator LDO1, and the power detection module respectively; the first voltage regulator LDO1 is connected to the power detection module; the second terminal of the fifth switching transistor MOS5 is connected to the power tree.

[0159] It should be noted that the third switch, MOS3, is used to receive the first safety voltage output from the protection circuit and to prevent current from flowing back to the external power supply. When the voltage input to the protection circuit is abnormal, the third switch, MOS3, is turned off, thereby preventing abnormal external power from entering the terminal and improving the reliability and safety of the terminal operation.

[0160] When an external power source is plugged into the power socket, the third switch MOS3 and the fourth switch MOS4 are turned on, while the fifth switch MOS5 is turned off. The external power source passes through the protection circuit, the third switch MOS3, and the fourth switch MOS4 before entering the power tree, where it undergoes hierarchical power regulation. During this process, the external power source simultaneously charges the smart battery through the third switch MOS3 and the charging module. Furthermore, the external power source also passes through the first voltage regulator LDO1, which converts the external power source voltage into a first preset supply voltage to provide power to the power detection module. The first preset supply voltage can be set according to the needs of the power detection module. In this embodiment, the first preset supply voltage is 5V, and the first voltage regulator LDO1 is a low-dropout linear regulator.

[0161] The power detection module detects the battery voltage of the smart battery and provides a power level indication based on a comparison between the battery voltage and a preset threshold voltage. The module includes a power detection chip and a three-color LED. The power detection chip collects the battery voltage of the smart battery and drives the three-color LED to display the color corresponding to the comparison result. The preset threshold voltage includes a first threshold voltage, a second threshold voltage, and a third threshold voltage. The three-color LED can be an LED.

[0162] When the battery voltage is lower than the first threshold voltage, the tri-color indicator light does not activate. When the battery voltage is higher than the first threshold voltage but lower than the second threshold voltage, the power detection chip drives the tri-color indicator light to display red, indicating that the battery is in a low-charge state. When the battery voltage is higher than the second threshold voltage but lower than the third threshold voltage, the power detection chip drives the tri-color indicator light to display yellow, indicating that the battery is neither low-charged nor fully charged. When the battery voltage is higher than the third threshold voltage, the power detection chip drives the tri-color indicator light to display green, indicating that the battery is fully charged. This embodiment achieves power management of the smart battery by setting up a power detection module.

[0163] When the external power supply is not plugged into the power socket, the third switch MOS3 and the fourth switch MOS4 are not turned on, and the fifth switch MOS5 is turned on. After the power safety monitoring edge terminal is started, the smart battery is used as a backup power source.

[0164] This embodiment uses segmented control by setting the third switch MOS3, the fourth switch MOS4, and the fifth switch MOS5, and sets up a smart battery as a backup power source, so that the power management circuit can continuously provide a stable DC power to the power tree. This allows the power tree to provide a stable multi-level voltage to the power safety monitoring edge terminal, improving the stability and reliability of the terminal operation.

[0165] In one specific embodiment, the smart battery is also connected to the AI ​​processor module via I2C (SMBUS).

[0166] It should be noted that the AI ​​processor module can read status information such as smart battery voltage, power, and temperature via I2C (SMBUS).

[0167] In a specific embodiment, such as Figure 8 As shown, the power tree includes: a first voltage conversion module DC / DC1, a second voltage conversion module DC / DC2, a third voltage conversion module DC / DC3, a fourth voltage conversion module DC / DC4, a fifth voltage conversion module DC / DC5, a sixth voltage conversion module DC / DC6, a boost module, a first discharge circuit, a second discharge circuit, a third discharge circuit, a fourth discharge circuit, a fifth discharge circuit, a sixth discharge circuit, a second voltage regulator LDO2, and a NOT gate;

[0168] The power management circuit is connected to the first voltage conversion module DC / DC1, the second voltage conversion module DC / DC2, the third voltage conversion module DC / DC3, and the fifth voltage conversion module DC / DC5, respectively.

[0169] The first voltage conversion module DC / DC1 is connected to the power safety monitoring edge terminal and the second voltage regulator LDO2, respectively.

[0170] The second voltage regulator LDO2 is connected to the start-stop circuit;

[0171] The start / stop circuit is connected to the power safety monitoring edge terminal, NOT gate, second voltage conversion module DC / DC2, third voltage conversion module DC / DC3, fourth voltage conversion module DC / DC4, fifth voltage conversion module DC / DC5, sixth voltage conversion module DC / DC6, and boost module, respectively.

[0172] The NOT gate is connected to the first discharge circuit, the second discharge circuit, the third discharge circuit, the fourth discharge circuit, the fifth discharge circuit, and the sixth discharge circuit, respectively.

[0173] The second voltage conversion module DC / DC2 is connected to the fourth voltage conversion module DC / DC4, the boost module, the first discharge circuit, and the first equipment component of the power safety monitoring edge terminal, respectively.

[0174] The third voltage conversion module DC / DC3 is connected to the fourth device component and the second discharge circuit of the power safety monitoring edge terminal, respectively.

[0175] The fourth voltage conversion module DC / DC4 is connected to the sixth voltage conversion module DC / DC6, the fourth discharge circuit, and the second equipment component of the power safety monitoring edge terminal, respectively.

[0176] The fifth voltage conversion module DC / DC5 is connected to the fifth discharge circuit and the fifth device component of the power safety monitoring edge terminal, respectively.

[0177] The sixth voltage conversion module DC / DC6 is connected to the sixth discharge circuit and the third equipment component of the power safety monitoring edge terminal, respectively.

[0178] The boost module is connected to the third discharge circuit and the sixth device component of the power safety monitoring edge terminal.

[0179] It should be noted that the output voltage of the power management circuit is 11.1V. The fifth switching transistor MOS5 in the power management circuit is connected to the first voltage conversion module DC / DC1, the second voltage conversion module DC / DC2, the third voltage conversion module DC / DC3, and the fifth voltage conversion module DC / DC5, respectively. The first voltage conversion module DC / DC1, the second voltage conversion module DC / DC2, the third voltage conversion module DC / DC3, the fourth voltage conversion module DC / DC4, the fifth voltage conversion module DC / DC5, and the sixth voltage conversion module DC / DC6 are all step-down DC-to-DC voltage conversion modules. The first device component includes a WAPI sub-device, a LoRa sub-board, a fan, an EXT_M2 module, and a USB interface. The second device component includes a Bluetooth sub-board (BLE), a hard drive module, a high-precision positioning module, a real-time clock module, a memory module, a temperature measurement module, and I2S interfaces. The third device component is the peripheral logic circuit. The fourth device component includes a 4G module. The fifth device component includes a voice power amplifier module. The sixth device component includes an LCD sub-board.

[0180] The system comprises the following modules: a first voltage conversion module (DC / DC1) converts the voltage output from the power management circuit to 5V; a second voltage regulator (LDO2) converts the 5V output from the first voltage conversion module (DC / DC1) to 1.8V and outputs the 1.8V to the start-stop circuit, providing a 1.8V pull-up power supply; a second voltage conversion module (DC / DC2) converts the voltage output from the power management circuit to 5V; a third voltage conversion module (DC / DC3) converts the voltage output from the power management circuit to 3.8V; a fourth voltage conversion module (DC / DC4) converts the voltage output from the power management circuit to 3.3V; a fifth voltage conversion module (DC / DC5) converts the voltage output from the power management circuit to 8V; a sixth voltage conversion module (DC / DC6) converts the 3.3V output from the fourth voltage conversion module (DC / DC4) to 1.8V; and a boost module converts the 5V output from the second voltage conversion module (DC / DC2) to 12.6V.

[0181] The specific working principle of this embodiment is as follows:

[0182] When the power management circuit outputs 11.1V to the first voltage conversion module DC / DC1, the second voltage conversion module DC / DC2, the third voltage conversion module DC / DC3, and the fifth voltage conversion module DC / DC5 respectively, the first voltage conversion module DC / DC1 converts the 11.1V power supply to 5V and outputs the 5V voltage to the AI ​​processor module and the second voltage regulator LDO2, providing 5V operating voltage for the AI ​​processor module and the second voltage regulator LDO2. The second voltage regulator LDO2 converts the 5V voltage to 1.8V and outputs the 1.8V voltage to the start-stop circuit, starting the start-stop circuit. The start-stop circuit determines whether the AI ​​processor module is in a normal state. If so, it outputs a high-level power enable signal and transmits the high level to the NOT gate, the second voltage conversion module DC / DC2, the third voltage conversion module DC / DC3, the fourth voltage conversion module DC / DC4, the fifth voltage conversion module DC / DC5, the sixth voltage conversion module DC / DC6, and the boost module to start the second voltage conversion module DC / DC2, the third voltage conversion module DC / DC3, the fourth voltage conversion module DC / DC4, the fifth voltage conversion module DC / DC5, the sixth voltage conversion module DC / DC6, and the boost module. The voltage conversion modules DC / DC3, DC / DC4, DC / DC5, and DC / DC6, along with the boost module, perform voltage conversion operations. A high-level enable signal is converted to a low-level signal via a NOT gate. This low-level signal is then output to the first, second, third, fourth, fifth, and sixth discharge circuits, respectively, stopping them from discharging. Upon receiving the high-level enable signal, the second, third, fourth, fifth, and sixth voltage conversion modules DC / DC2, DC / DC3, DC / DC4, DC / DC5, and DC / DC6, along with the boost module, execute the voltage conversion operation and output the converted voltage.

[0183] Specifically, the second voltage conversion module DC / DC2 receives the voltage output from the power management circuit, and when it receives a high-level power enable signal, it converts the voltage output from the power management circuit into a 5V voltage for output, providing power to the WAPI sub-device, LORA sub-board, fan, EXT_M2 module, USB interface, etc. At the same time, it also transmits the output 5V voltage to the fourth voltage conversion module DC / DC4 and the boost module.

[0184] The third voltage conversion module, DC / DC3, receives the voltage output from the power management circuit and, upon receiving a high-level power enable signal, converts the voltage output from the power management circuit into a 3.8V voltage output to power the 4G module.

[0185] The fourth voltage conversion module DC / DC4 receives the 5V voltage output from the second voltage conversion module DC / DC2, and when it receives a high-level power enable signal, it converts the 5V voltage output from the second voltage conversion module DC / DC2 into a 3.3V voltage output to power the functional circuits related to the edge terminal. The functional circuits include: Bluetooth daughterboard, hard disk module, high-precision positioning module, real-time clock module, memory module, temperature measurement module, I2S interface, etc.

[0186] The fifth voltage conversion module DC / DC5 receives the voltage output from the power management circuit and, upon receiving a high-level power enable signal, converts the voltage output from the power management circuit into an 8V voltage output to power the voice amplifier module of the edge terminal.

[0187] The sixth voltage conversion module DC / DC6 receives the 3.3V voltage output from the fourth voltage conversion module DC / DC4, and when it receives a high-level power enable signal, it converts the 3.3V voltage output from the fourth voltage conversion module DC / DC4 into a 1.8V voltage output to power the peripheral logic circuits related to the edge terminal.

[0188] Considering that the battery voltage is a floating voltage, varying from 8.25V to 12.6V as the battery state changes, while the LCD display requires a stable 12.6V, this embodiment sets up a boost module. The boost module receives the 5V voltage output from the second voltage conversion module DC / DC2, and when it receives a high-level power enable signal, it converts the 5V voltage output from the second voltage conversion module DC / DC2 into a 12.6V voltage output to provide a stable operating voltage for the LCD daughterboard.

[0189] Understandably, when the AI ​​processor module is determined to be in an abnormal state, the start / stop circuit outputs a low-level power enable signal, stopping the voltage conversion operations of the second voltage conversion module DC / DC2, the third voltage conversion module DC / DC3, the fourth voltage conversion module DC / DC4, the fifth voltage conversion module DC / DC5, the sixth voltage conversion module DC / DC6, and the boost module. Through the conversion effect of the NOT gate, the low-level power enable signal is converted into a high-level signal and output to each discharge circuit, thereby starting the first, second, third, fourth, fifth, and sixth discharge circuits to quickly discharge the corresponding voltage conversion modules and improve the safety and reliability of the edge terminal.

[0190] In one specific embodiment, see Figure 10The start / stop circuit includes: AND1, AND2, AND3, reset module, and watchdog module;

[0191] The power management circuit is connected to the power switch, which is connected to the delay circuit. The delay circuit is connected to the input of the first voltage conversion module DC / DC1. The power switch is connected to the second voltage divider module, which is connected to the first input of the first AND gate AND1. The output of the first voltage conversion module DC / DC1 is connected to the first voltage divider module, which is connected to the second input of the first AND gate AND1. The output of the first voltage conversion module DC / DC1 is connected to the third voltage divider module, which is connected to the reset module and the third input of the first AND gate AND1. The output of the first AND gate AND1 is connected to the power safety... The monitoring edge terminal is connected to the first input terminal of the third AND gate AND3; the power safety monitoring edge terminal is connected to the watchdog module, the second input terminal of the second AND gate AND2, and the second input terminal of the third AND gate AND3 respectively; the watchdog module is connected to the first input terminal of the second AND gate AND2; the output terminal of the second AND gate AND2 is connected to the reset module; the output terminal of the third AND gate AND3 is connected to the NOT gate NOT, the second voltage conversion module DC / DC2, the third voltage conversion module DC / DC3, the fourth voltage conversion module DC / DC4, the fifth voltage conversion module DC / DC5, the sixth voltage conversion module DC / DC6, and the boost module respectively.

[0192] It should be noted that in this embodiment, the output terminal of the power management circuit is connected to the VDD terminal of the first voltage conversion module DC / DC1, and the output terminal is also connected to the power switch. The power switch is connected to the delay circuit, and the delay circuit is connected to the enable terminal of the first voltage conversion module DC / DC1. The delay circuit is composed of a capacitor and a resistor connected in parallel. The delay time is greater than 50ms. The first voltage divider module consists of two voltage divider resistors. The second voltage divider module consists of three resistors, which form a T-type network. One end of the T-type network is grounded, one end is connected to the output terminal of the first voltage conversion module DC / DC1, and the other end is connected to the second input terminal of the first AND gate AND1. The third voltage divider module consists of one voltage divider resistor. The first AND gate AND1, the second AND gate AND2, the third AND gate AND3, and the reset module form a logic gate module (e.g., Figure 2 (As shown).

[0193] Specifically, the VCC terminal of the AI ​​processor module in the power safety monitoring edge terminal is connected to the output terminal of the first voltage conversion module DC / DC1; the POWER_EN terminal of the AI ​​processor module is connected to the output terminal of the first AND gate; the SHUTDOWN_REQ terminal of the AI ​​processor module is connected to the second input terminal of the second AND gate; the GPIO (WDI) terminal of the AI ​​processor module is connected to the watchdog module; and the output terminal of the second regulator LDO2 (i.e., Figure 10 The INIT_1.8V pin is connected to a pull-up resistor, and through the pull-up resistor, it is connected to the second input of the third AND gate and the SYS_RESET terminal of the AI ​​processor module, respectively.

[0194] The working principle of this embodiment is as follows:

[0195] The power management circuit outputs 11.1V to the power input (VDD) of the first voltage conversion module DC / DC1. When the power switch is closed, the power management circuit charges the capacitor in the delay circuit, and after a 50ms delay, the enable terminal of the first voltage conversion module DC / DC1 is connected to the power management circuit, thereby starting the first voltage conversion module DC / DC1 and enabling it to perform voltage conversion to provide 5V to the AI ​​processor module, watchdog module, reset module, and second regulator LDO2. Furthermore, when the power management circuit switches between external power and internal backup power, the energy storage function of the capacitor in the delay circuit ensures that the enable terminal of the first voltage conversion module DC / DC1 remains powered. Additionally, when the power switch is closed, the power management circuit outputs 11.1V to the first input of the first AND gate AND1 through the power switch and the second voltage divider module.

[0196] After the first voltage conversion module DC / DC1 starts up, it converts the 11.1V voltage to 5V voltage. One 5V voltage is output to the input terminal VDD and the enable terminal EN of the second voltage regulator LDO2, another output is output to the VCC terminal of the AI ​​processor module, and another output is input to the second input terminal of the first AND gate AND1 through the voltage divider module.

[0197] When the AI ​​processor module receives 5V, its GPIO (WDI) and SHUTDOWN_REQ pins output a high level. When the GPIO (WDI) pin outputs a high level, the watchdog module powers on and, after a delay of approximately 320ms, outputs a high-level reset signal. At this time, both the first and second inputs of the second AND gate AND2 receive high-level signals. Therefore, the output of the second AND gate AND2 outputs a high-level signal, which in turn causes the MR pin of the reset module to receive a high-level signal. After a delay of approximately 500ms, its RST pin outputs a high-level signal to the third input of the first AND gate AND1. Therefore, the time from the AI ​​processor module powering on to the reset module outputting a high-level signal is approximately 820ms, allowing the AI ​​processor module to be fully powered on and improving the stability and reliability of its operation.

[0198] When the first input of the first AND gate AND1 receives a high-level signal, it indicates that the power supply to the power management circuit is normal. When the second input of the first AND gate AND1 receives a high-level signal, it indicates that the power supply to the first voltage conversion module DC / DC1 is normal. When the third input of the first AND gate AND1 receives a high-level signal, it indicates that the AI ​​processor module reset is normal. Therefore, when the first, second, and third inputs of the first AND gate AND1 all receive high-level signals, the output of the first AND gate AND1 outputs a high-level signal, energizing the POWER_EN terminal of the AI ​​processor module, thereby starting the AI ​​processor module and initiating the boot process.

[0199] Furthermore, when the output of the first AND gate AND1 is high, the AI ​​processor module enters the startup process. Simultaneously, the first input of the third AND gate AND3 is energized to a high level. At this time, the SYS_RESET terminal of the AI ​​processor module remains low, and the output of the third AND gate AND3 remains low, causing the enable terminals EN of each voltage conversion module to remain low. After conversion by the NOT gate, each discharge circuit receives a high level, thus activating the discharge circuits and assisting each voltage conversion module in rapidly discharging and completing the power-down action as quickly as possible. When the AI ​​processing module is working normally, the SYS_RESET terminal changes from low to high, causing the output of the third AND gate AND3 to go high. This energizes the enable terminals EN of each voltage conversion module, and after conversion by the NOT gate, each discharge circuit receives a low level, stopping the discharge. Each voltage conversion module then starts supplying power, enabling each daughterboard, interface, and other device to start working, thereby starting the entire edge terminal and commencing normal operation.

[0200] It should be noted that when the POWER_EN terminal of the AI ​​processor module receives a low-level signal, the AI ​​processor module will remain in a shutdown state. Therefore, when the SHUTDOWN_REQ terminal of the AI ​​processor module continuously outputs a low level, due to the logic of the first AND gate AND1 and the second AND gate AND2, the POWER_EN terminal will continuously receive a low-level signal, keeping the AI ​​processor module in a shutdown state.

[0201] When a restart is required, the SHUTDOWN_REQ pin outputs a high-level signal, causing the POWER_EN pin to also receive a high-level signal. This initiates the startup process for the AI ​​processor module, restarting it. For example, if the AI ​​processor module overheats, it sends a stop request signal, causing SHUTDOWN_REQ to output a low-level signal. This causes the MR pin of the reset chip to go low, putting the reset chip into a reset state. The RST pin then outputs a low-level signal, causing the POWER_EN pin to go low, thus stopping the AI ​​processor module. As another example, if the AI ​​processor module fails to feed the watchdog timer in time due to a malfunction (i.e., the GPIO (WDI) signal is interrupted), the watchdog module will be triggered to reset. The watchdog module output changes from high to low, pulling POWER_EN low and stopping the AI ​​processor.

[0202] In one specific embodiment, see Figure 9 The first, second, third, fourth, fifth, and sixth discharge circuits each include a discharge resistor and a third switch module. The first end of the discharge resistor is the power input terminal. The second end of the discharge resistor is connected to the first end of the third switch module. The second end of the third switch module is grounded, and the third end of the third switch module is connected to a NOT gate.

[0203] It should be noted that the third switching module uses an N-type MOSFET. In this embodiment, each discharge circuit is used to provide a fast discharge channel for the corresponding power conversion module to complete the power-down action as quickly as possible.

[0204] In this embodiment, each discharge circuit consists of an N-type MOSFET and a discharge resistor. The output terminal of each voltage conversion module is connected to the VCC_IN terminal of each discharge circuit and then connected to the drain of the N-type MOSFET through the discharge resistor. The power enable signal is converted by the NOT gate and sent to the gate G terminal of the MOSFET through the 'PMIC_OFF_REQ' terminal. When the power enable signal received by the 'PMIC_OFF_REQ' terminal is high, the MOSFET is turned on, and each voltage conversion module discharges to ground through the discharge resistor. When the power enable signal received by the 'PMIC_OFF_REQ' terminal is ground level, the MOSFET is turned off, the discharge circuit of each voltage conversion module is turned off, and no discharge to ground is performed.

[0205] It should be noted that WDI is the dog-feed signal output by the AI ​​processor, which is generated after power-on to prevent other problems caused by the processor program running out of control.

[0206] In one specific embodiment, the power safety monitoring edge terminal also includes an interface module and a housing. The interface module includes: a power interface, a gigabit network port, a USB interface, a SIM card interface, a reset button, and an antenna interface.

[0207] In this embodiment, the USB interface includes both a USB 2.0 interface and a USB 3.0 interface for connecting to peripherals. There are two SIM interfaces. In this embodiment, the USB 3.0 interface, multimedia interface, two SIM interfaces, and a reset button are located on a first preset area on the side of the housing. A waterproof cover is detachably connected to the first preset area and covers the USB 3.0 interface, multimedia interface, two SIM interfaces, and reset button, providing waterproofing. The antenna interface uses a waterproof SMA connector. The gigabit Ethernet port uses a 12-pin M12 aviation connector. The power interface uses an 8-pin M12 aviation connector.

[0208] Specifically, there are 8 antenna interfaces. Seven antenna interfaces are used to install antenna modules, which include two 4G antennas, a Bluetooth antenna, a LARA antenna, a high-precision positioning antenna, and two WAPI antennas. The remaining antenna interface is used as a spare interface.

[0209] In a specific embodiment, such as Figure 2 As shown, it also includes a power indicator light and a power supply module. The power indicator light is connected to the power supply module and the power switch, respectively, and the power supply module is connected to the power switching module.

[0210] It should be noted that the power supply module provides power to the power indicator light. When the power safety edge terminal is powered on, the power indicator light remains constantly lit, indicating that the power safety edge terminal is in the powered-on state. In this embodiment, the power indicator light can be an LED, and the power supply module can be a DC / DC converter.

[0211] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0212] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0213] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power management device for an edge terminal of power safety monitoring, characterized in that, The power management device is connected to the power safety monitoring edge terminal, and the power management device includes: a power management loop, a power tree, and a start / stop loop; The power management circuit is used to receive external power, manage the external power, and output a first safe voltage; The power tree is connected to the power management loop, the power safety monitoring edge terminal, and the start-stop loop, respectively, and is used to receive the first safety voltage, perform hierarchical processing on the first safety voltage to obtain each hierarchical voltage, and transmit each hierarchical voltage to the power safety monitoring edge terminal and the start-stop loop respectively. The start-stop circuit is connected to the power tree and the power safety monitoring edge terminal, and is used to start and stop the power safety monitoring edge terminal in response to the voltage signal output by the power tree and the control signal output by the power safety monitoring edge terminal. The power tree includes: a first voltage conversion module, a second voltage conversion module, a third voltage conversion module, a fourth voltage conversion module, a fifth voltage conversion module, a sixth voltage conversion module, a boost module, a first discharge circuit, a second discharge circuit, a third discharge circuit, a fourth discharge circuit, a fifth discharge circuit, a sixth discharge circuit, a second voltage regulator, and a NOT gate; The power management circuit is connected to the first voltage conversion module, the second voltage conversion module, the third voltage conversion module, and the fifth voltage conversion module, respectively. The first voltage conversion module is connected to the power safety monitoring edge terminal and the second voltage regulator, respectively; The second voltage regulator is connected to the start-stop circuit; The start / stop circuit is connected to the power safety monitoring edge terminal, the NOT gate, the second voltage conversion module, the third voltage conversion module, the fourth voltage conversion module, the fifth voltage conversion module, the sixth voltage conversion module, and the boost module, respectively. The NOT gate is connected to the first discharge circuit, the second discharge circuit, the third discharge circuit, the fourth discharge circuit, the fifth discharge circuit, and the sixth discharge circuit, respectively. The second voltage conversion module is connected to the fourth voltage conversion module, the boost module, the first discharge circuit, and the first device component of the power safety monitoring edge terminal, respectively. The third voltage conversion module is connected to the fourth device component and the second discharge circuit of the power safety monitoring edge terminal, respectively. The fourth voltage conversion module is connected to the sixth voltage conversion module, the fourth discharge circuit, and the second device component of the power safety monitoring edge terminal, respectively. The fifth voltage conversion module is connected to the fifth discharge circuit and the fifth device component of the power safety monitoring edge terminal, respectively. The sixth voltage conversion module is connected to the sixth discharge circuit and the third device component of the power safety monitoring edge terminal, respectively. The boost module is connected to the third discharge circuit and the sixth device component of the power safety monitoring edge terminal.

2. The power management device according to claim 1, characterized in that, The power management circuit includes: a power protection module, a power switching module, a peripheral power supply switch module, and a backup power module; The power protection module is connected to the power switching module and the peripheral power supply switch module respectively, and is used to receive external power, perform safety detection on the external power, and output a first safety voltage after the detection is passed. The power switching module is connected to the power protection module and the backup power module respectively, and is used to switch between the external power supply and the backup power module; the backup power module is used to provide a backup first safety voltage. The peripheral power supply switch module is connected to the power protection module and is used to receive the first safety voltage to supply power to the peripheral device.

3. The power management device according to claim 2, characterized in that, The power protection module includes: a power socket, a protection circuit, and a protection circuit; The power socket is connected to the protection circuit and the protection circuit respectively, and is used to receive the input external power and transmit the external power to the protection circuit and the protection circuit; The protection circuit is connected to the protection circuit and is used to perform a first preprocessing on the external power supply to obtain a first target power supply, and transmit the first target power supply to the protection circuit; the first preprocessing includes voltage clamping and filtering. The protection circuit is connected to the power switching module and the peripheral power supply switch module, and is used to perform reverse connection detection and overvoltage detection on the first target power supply, and output a first safe voltage after the detection is passed.

4. The power management device according to claim 3, characterized in that, The protection circuit includes: a first transient diode, a varistor, and a filter; The power socket is connected in sequence to the first terminal of the first transient diode, the first terminal of the varistor, and the first terminal of the filter; The second terminal of the first transient diode is grounded; the second terminal of the varistor is grounded; the second terminal of the filter is grounded. The third terminal of the filter is connected to the protection circuit and is used to output the first target power supply.

5. The power management device according to claim 3, characterized in that, The protection circuit includes: a first switching transistor, a current-limiting resistor, a second transient diode, a first transistor, a second transistor, a first voltage-dividing resistor, a second voltage-dividing resistor, and a second switching transistor; The first terminal of the first switching transistor is connected to the protection circuit, and the second terminal of the first switching transistor is connected to the first terminal of the current limiting resistor, the third terminal of the second transistor, the first terminal of the first voltage divider resistor, and the second terminal of the second switching transistor; the third terminal of the first switching transistor is connected to the second terminal of the first transistor. The first end of the first transistor is connected to the output end of the power socket; The third terminal of the first transistor, the second terminal of the second transient diode, and the second terminal of the second voltage divider resistor are all grounded. The second end of the current-limiting resistor is connected to the first end of the second transient diode and the first end of the second transistor, respectively. The second terminal of the second transistor is connected to the second terminal of the first voltage divider resistor, the first terminal of the second voltage divider resistor, and the third terminal of the second switching transistor, respectively. The first end of the second switching transistor is connected to the power switching module and the peripheral power supply switching module.

6. The power management device according to claim 3, characterized in that, The power switching module includes: a third switching transistor, a fourth switching transistor, and a fifth switching transistor; the backup power module includes: a charging module, a smart battery, a first voltage regulator, and a power detection module. The protection circuit is connected to the first terminal of the third switching transistor; The second end of the third switch is connected to the first end of the charging module and the first end of the fourth switch, respectively; the second end of the fourth switch is connected to the second end of the fifth switch. The second end of the charging module is connected to the first end of the fifth switching transistor, the smart battery, the first voltage regulator, and the power detection module, respectively. The first voltage regulator is connected to the power detection module; The second terminal of the fifth switch is connected to the power tree.

7. The power management device according to claim 3, characterized in that, The peripheral power supply switch module includes: a first switch module and a second switch module; The power socket is connected to the second end of the second switch module; The second terminal of the first switch module is connected to the protection circuit; The first terminal of the first switch module is connected to an external device; The third terminal of the first switch module is connected to the first terminal of the second switch module; The third terminal of the second switch module is grounded.

8. The power management device according to claim 1, characterized in that, The first discharge circuit, the second discharge circuit, the third discharge circuit, the fourth discharge circuit, the fifth discharge circuit, and the sixth discharge circuit all include a discharge resistor and a third switch module; The first end of the discharge resistor is the power input terminal; The second end of the discharge resistor is connected to the first end of the third switch module, the second end of the third switch module is grounded, and the third end of the third switch module is connected to the NOT gate.

9. The power management device according to claim 1, characterized in that, The start / stop circuit includes: a first AND gate, a second AND gate, a third AND gate, a reset module, and a watchdog module; The power management circuit is connected to the power switch, the power switch is connected to the delay circuit, and the delay circuit is connected to the input terminal of the first voltage conversion module. The power switch is connected to the second voltage divider module, and the second voltage divider module is connected to the first input terminal of the first AND gate. The output of the first voltage conversion module is connected to the first voltage divider module, and the first voltage divider module is connected to the second input of the first AND gate. The output terminal of the first voltage conversion module is connected to the third voltage divider module, and the third voltage divider module is connected to the reset module and the third input terminal of the first AND gate, respectively. The output of the first AND gate is connected to the power safety monitoring edge terminal and the first input of the third AND gate, respectively. The power safety monitoring edge terminal is connected to the watchdog module, the second input terminal of the second AND gate, and the second input terminal of the third AND gate, respectively. The watchdog module is connected to the first input terminal of the second AND gate; the output terminal of the second AND gate is connected to the reset module. The output of the third AND gate is connected to the NOT gate, the second voltage conversion module, the third voltage conversion module, the fourth voltage conversion module, the fifth voltage conversion module, the sixth voltage conversion module, and the boost module, respectively.

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