CN210667066U - Intelligent anti-theft monitoring system of numerical control machine tool based on wireless sensor network - Google Patents

Abstract

The utility model discloses a digit control machine tool intelligence theftproof monitored control system based on wireless sensor network contains monitor terminal, assembles the node and comprises a plurality of sensor nodes that set up on the digit control machine tool, sensor node contains angular velocity sensor array, acceleration sensor array, vibrations sensor array, multiplexing switch, data preprocessing module, orientation module, video acquisition module, microprocessor module, multinode data transmission module, LCD display, input/output module, interface module and power module. The moving track of the numerical control machine tool is measured by combining a wireless sensor network and a sensor, so that the moving track of the numerical control machine tool can be accurately obtained; the moving track of the numerical control machine tool is accurately obtained by detecting parameters through the angular velocity sensor, the acceleration sensor and the vibration sensor, and the accurate position of the numerical control machine tool can be specifically obtained in real time by combining the positioning module, so that the equipment is effectively prevented from being stolen.

Description

Intelligent anti-theft monitoring system of numerical control machine tool based on wireless sensor network

Technical Field

The utility model relates to a metal particle processing technology field, more specifically say, the utility model relates to a digit control machine tool intelligence theftproof monitored control system based on wireless sensor network.

Background

Although the wireless sensor network has similarities with the wireless ad hoc network, there are also great differences. The sensor network is a network system integrating monitoring, control and wireless communication, the number of nodes is larger, and the nodes are more densely distributed; nodes are more prone to failure due to environmental impact and energy depletion; environmental interference and node faults easily cause changes of network topology structures; typically, most sensor nodes are stationary. In addition, the sensor nodes have very limited energy, processing, storage, and communication capabilities. The primary design goal of traditional wireless networks is to provide high quality of service and efficient bandwidth utilization, and secondly to consider energy savings; the primary design goal of sensor networks is efficient energy utilization, which is one of the most important differences between sensor networks and conventional networks.

With the development of science and technology, wireless sensor network technology has penetrated aspects of human production and life. Wireless communication networks have gradually developed into internet of things which can communicate between any person and any object at any time and any place, and the scale of the networks is rapidly expanded, but at the same time, the overall stability and sustainable development problems of the internet of things are more and more prominent. Meanwhile, to meet the needs of human life, more and more sensors need to be placed in regions with rare or harsh environments, and the harsh environments in the regions determine that people cannot use chemical batteries to supply power for wireless sensor nodes, because it is not likely that the chemical batteries are replaced in the regions. For these reasons, the present invention contemplates using renewable energy sources to power wireless communication nodes to address these problems.

In recent years, with the introduction and popularization of the concept of "smart city", a large number of new engineering fields such as "smart security", "smart medical treatment" and "smart transportation" have become the focus of government and enterprise attention, and "smart security" is particularly concerned as a field closely related to the security of people's lives and properties. As one of the important components of the intelligent community, the video monitoring system plays an important role in community security.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above defects in the prior art, embodiments of the present invention provide an intelligent anti-theft monitoring system for a numerical control machine based on a wireless sensor network, which measures the movement track of the numerical control machine by combining the wireless sensor network and a sensor, and can accurately obtain the movement track of the numerical control machine; the moving track of the numerical control machine tool is accurately obtained by detecting parameters through the angular velocity sensor, the acceleration sensor and the vibration sensor, and the accurate position of the numerical control machine tool can be specifically obtained in real time by combining the positioning module, so that the equipment is effectively prevented from being stolen.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a digit control machine tool intelligence theftproof monitored control system based on wireless sensor network, contains monitor terminal, convergent node and by the sensor network that a plurality of sensor nodes that set up on the digit control machine tool constitute, every sensor node that sets up on the digit control machine tool passes through convergent node connection monitor terminal, sensor node contains angular velocity sensor array, acceleration sensor array, vibrations sensor array, multiplexing switch, data preprocessing module, orientation module, video acquisition module, microprocessor module, multinode data transmission module, LCD display, input/output module, interface module and power module, angular velocity sensor array, acceleration sensor array, vibrations sensor array are respectively through passing through multiplexing switch, data preprocessing module connection microprocessor module in proper order, orientation module, convergent node, The video acquisition module, the data transmission module, the LCD display, the input and output module, the interface module and the power supply module are respectively connected to corresponding ports of the microprocessor module.

As the utility model relates to a digit control machine tool intelligence anti-theft monitoring system's further preferred scheme based on wireless sensor network, microprocessor module's chip model is MSP 430's 16 level controllers.

As the utility model relates to a digit control machine tool intelligence anti-theft monitoring system's further preferred scheme based on wireless sensor network, multinode data transmission module contains FPGA host system and the MLVDS communication module rather than being connected.

As the utility model relates to a digit control machine tool intelligence theftproof monitored control system's further preferred scheme based on wireless sensor network, MLVDS communication module contains ADC module, controller module, first MLVDS communication unit, the first MLVDS interface chip that connects gradually.

As a further preferred scheme of the intelligent anti-theft monitoring system of the numerical control machine based on the wireless sensor network, the FPGA main control module comprises a USB interface circuit, a USB communication management module, a DDR3 SDRAM, a DDR3 controller, a FlasH memory, a data management module, a second MLVDS communication unit, and a second MLVDS interface chip; the USB interface circuit is connected with the data management module through the USB communication management module, the DDR3 SDRAM is connected with the data management module through the DDR3 controller, the FlasH memory is connected with the data management module through the FlasH controller, the data management module is connected with the second MLVDS interface chip through the second MLVDS communication unit, and the second MLVDS interface chip is connected with the MLVDS data communication bus.

As the utility model relates to a digit control machine tool intelligence anti-theft monitoring system's further preferred scheme based on wireless sensor network, data management module chooses for use Xilinx company's spark tan-6 series programmable logic device 6slx16csg324 chip as core control ware.

As the utility model relates to a digit control machine tool intelligence theftproof monitored control system's further preferred scheme based on wireless sensor network, USB interface circuit adopts FX3 series CYUSB3014 chip that the company of seilance released.

As a further preferred scheme of the intelligent anti-theft monitoring system of the numerical control machine based on the wireless sensor network of the utility model, the monitoring terminal comprises a data transceiver module, a singlechip module, a display module, an alarm module, a GSM module and a memory module; the data transceiver module, the display module, the alarm module, the GSM module and the memory module are respectively connected with the single chip microcomputer module.

As the utility model relates to a digit control machine tool intelligence anti-theft monitoring system's further preferred scheme based on wireless sensor network, power module contains commercial power module and power supply conversion circuit, commercial power module passes through power supply conversion circuit and connects microprocessor module.

As a further preferred scheme of the utility model relates to a digit control machine tool intelligence theftproof monitored control system based on wireless sensor network, power supply converting circuit contains DC12V voltage input end, first diode, first electric capacity, second electric capacity, LM2576S-5.0 power chip, second diode, first inductance, third electric capacity, 5V voltage output end, 5V voltage input end, fourth electric capacity, TPS7a7001 power chip, first resistance, second resistance, fifth electric capacity and 3.3V voltage output end;

the voltage input end of the DC12V is respectively connected with the cathode of a first diode, one end of a first capacitor, one end of a second capacitor and the VIN end of the LM2576S-5.0 power supply chip, and the other end of the first diode is respectively connected with the other end of the first capacitor, the other end of the second capacitor, the EN # end of the LM2576S-5.0 power supply chip, the GND end of the LM2576S-5.0 power supply chip, the anode of the second diode and one end of a third capacitor and is grounded; the cathode of the second diode is respectively connected with the VOUT end of the LM2576S-5.0 power supply chip and one end of the first inductor, and the other end of the first inductor is respectively connected with the other end of the third capacitor, the FB end of the LM2576S-5.0 power supply chip and the 5V output end;

the 5V input end is respectively connected with one end of a fourth capacitor, the EN end of the TPS7A7001 power supply chip and the IN end of the TPS7A7001 power supply chip, the other end of the fourth capacitor is grounded, the GND end of the TPS7A7001 power supply chip is connected with one end of a first resistor, the other end of the first resistor is respectively connected with one end of a second resistor and the FB end of the TPS7A7001 power supply chip, the other end of the second resistor is respectively connected with one end of a fifth capacitor, the OUT end of the TPS7A7001 power supply chip and the 3.3V output end, and the other end of the fifth capacitor is grounded.

The utility model discloses a technological effect and advantage:

1. the utility model measures the moving track of the numerical control machine tool by combining the wireless sensor network with the sensor, and can accurately acquire the moving track of the numerical control machine tool; parameters are detected through an angular velocity sensor, an acceleration sensor and a vibration sensor, so that the moving track of the numerical control machine tool is accurately obtained, and the accurate position of the numerical control machine tool can be specifically obtained in real time by combining with a positioning module, so that equipment is effectively prevented from being stolen;

2. the utility model carries out data parameter acquisition through the angular velocity sensor array, the acceleration sensor array and the vibration sensor array, thereby greatly improving the acquisition precision;

3. the utility model discloses the monitor terminal is equipped with the GSM module, when the condition of stealing takes place, can report to the police and inform supervisory personnel in time;

4. the utility model discloses a data transmission module based on MLVDS interface and USB3.0 interface, this transmission module adopts CYUSB3014 interface chip to realize the high-speed data transmission of computer and FPGA, adopts ADN4693E interface chip to accomplish multinode data transmission, regards FPGA as the core control ware to because MLVDS self-defined agreement analyzes multinode communication logic, realize the data interaction between MLVDS interface and the USB3.0 interface; the system has accurate and reliable data conversion result, and realizes high-speed communication between the upper computer and the multi-node data acquisition equipment;

5. the MLVDS-USB 3.0 converter realizes the control of the high-speed uploading of the collected data and the issuing of the instruction between the multi-node collecting equipment and the upper computer through the conversion function of the MLVDS-USB 3.0 converter, can flexibly realize various transmission protocols on the premise of not changing a hardware system framework, and has the advantages of simple hardware circuit, strong universality and stable transmission.

Drawings

FIG. 1 is a schematic diagram of the overall system structure of the present invention;

fig. 2 is a schematic structural diagram of a sensor node of the present invention;

fig. 3 is a schematic structural diagram of the multi-node data transmission module of the present invention;

fig. 4 is a schematic structural diagram of the MLVDS communication module of the present invention;

FIG. 5 is a schematic diagram of the structure of the FPGA main control module of the present invention;

fig. 6 is a schematic structural diagram of the monitoring terminal of the present invention;

fig. 7 is a circuit diagram of the power supply conversion circuit of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a digit control machine tool intelligence theftproof monitored control system based on wireless sensor network, contains monitor terminal, convergent node and by the sensor network that a plurality of sensor nodes that set up on the digit control machine tool constitute, every sensor node that sets up on the digit control machine tool passes through convergent node connection monitor terminal, sensor node contains angular velocity sensor array, acceleration sensor array, vibrations sensor array, multiplexing switch, data preprocessing module, orientation module, video acquisition module, microprocessor module, multinode data transmission module, LCD display, input/output module, interface module and power module, angular velocity sensor array, acceleration sensor array, vibrations sensor array are respectively through passing through multiplexing switch, data preprocessing module connection microprocessor module in proper order, orientation module, convergent node, The video acquisition module, the data transmission module, the LCD display, the input and output module, the interface module and the power supply module are respectively connected to corresponding ports of the microprocessor module.

Preferably, the chip model of the microprocessor module is a 16-bit controller of the MSP 430.

Preferably, the multi-node data transmission module includes an FPGA main control module and an MLVDS communication module connected thereto.

Preferably, the MLVDS communication module includes an ADC module, a controller module, a first MLVDS communication unit, and a first MLVDS interface chip, which are connected in sequence.

Preferably, the FPGA master control module includes a USB interface circuit, a USB communication management module, a DDR3 SDRAM, a DDR3 controller, a flashh memory, a data management module, a second MLVDS communication unit, and a second MLVDS interface chip; the USB interface circuit is connected with the data management module through the USB communication management module, the DDR3 SDRAM is connected with the data management module through the DDR3 controller, the FlasH memory is connected with the data management module through the FlasH controller, the data management module is connected with the second MLVDS interface chip through the second MLVDS communication unit, and the second MLVDS interface chip is connected with the MLVDS data communication bus.

Preferably, the data management module selects a Spartan-6 series programmable logic device 6slx16csg324 chip of Xilinx corporation as a core controller.

Preferably, the USB interface circuit uses FX3 series CYUSB3014 chip from seilance corporation.

Preferably, the monitoring terminal comprises a data transceiver module, a singlechip module, a display module, an alarm module, a GSM module and a memory module; the data transceiver module, the display module, the alarm module, the GSM module and the memory module are respectively connected with the single chip microcomputer module.

Preferably, the power module comprises a mains supply module and a power supply conversion circuit, and the mains supply module is connected with the microprocessor module through the power supply conversion circuit.

Preferably, the power supply conversion circuit comprises a DC12V voltage input end, a first diode, a first capacitor, a second capacitor, an LM2576S-5.0 power chip, a second diode, a first inductor, a third capacitor, a 5V voltage output end, a 5V voltage input end, a fourth capacitor, a TPS7a7001 power chip, a first resistor, a second resistor, a fifth capacitor, and a 3.3V voltage output end;

the voltage input end of the DC12V is respectively connected with the cathode of a first diode, one end of a first capacitor, one end of a second capacitor and the VIN end of the LM2576S-5.0 power supply chip, and the other end of the first diode is respectively connected with the other end of the first capacitor, the other end of the second capacitor, the EN # end of the LM2576S-5.0 power supply chip, the GND end of the LM2576S-5.0 power supply chip, the anode of the second diode and one end of a third capacitor and is grounded; the cathode of the second diode is respectively connected with the VOUT end of the LM2576S-5.0 power supply chip and one end of the first inductor, and the other end of the first inductor is respectively connected with the other end of the third capacitor, the FB end of the LM2576S-5.0 power supply chip and the 5V output end;

the 5V input end is respectively connected with one end of a fourth capacitor, the EN end of the TPS7A7001 power supply chip and the IN end of the TPS7A7001 power supply chip, the other end of the fourth capacitor is grounded, the GND end of the TPS7A7001 power supply chip is connected with one end of a first resistor, the other end of the first resistor is respectively connected with one end of a second resistor and the FB end of the TPS7A7001 power supply chip, the other end of the second resistor is respectively connected with one end of a fifth capacitor, the OUT end of the TPS7A7001 power supply chip and the 3.3V output end, and the other end of the fifth capacitor is grounded.

ADN4639E is a full-duplex MLVDS driving receiver released by ADI company, the driver and the receiver are built in and do not interfere with each other, the data rate of 200 Mb/s can be supported at most, and the method can be applied to clock signal transmission, backplane data transmission and other applications. The schematic diagram of the transmission structure of the MLVDS bus is shown in fig. 2, data bit synchronization is realized between transmission nodes in an asynchronous serial communication mode, data is transmitted through differential signals, each slave node can simultaneously receive an instruction sent by a master node, each slave node only responds to the instruction belonging to the slave node, if a certain slave node receives a data transmission instruction, a driver enabling end is opened to drive the bus, and only one driver in each slave node is effective at each moment, so that the situation that the master node receives data messy codes caused by the fact that a plurality of slave nodes drive the bus simultaneously is avoided.

Digital isolation between single ends of an MLVDS chip driver and a receiver on each node and a controller pin is realized by adopting an ADuM3442 chip, and level drift caused by circuit ripples on an interface circuit is prevented.

The ADuM5000 is adopted to provide a power supply isolation circuit for the MLVDS bus channel, the circuit realizes complete isolation of data and a power supply, and the circuit can be guaranteed to be capable of dealing with the influence of high-voltage transient.

The USB3.0 interface chip is selected from FX3 series CYUSB3014 chips proposed by Seplacian, has high flexibility and general programmable interface GPIF II, and can ensure high-speed communication with large-capacity data of most controllers. Furthermore, it is provided with a UART interface. In the design, the UART interface is used for issuing instructions and uploading state words, and the GPIF II is used for uploading high-speed large-capacity data.

The MLVDS bus interface is simple, only the electrical characteristics of the bus physical layer are specified, and a high-level protocol is not involved. The functions of coding, decoding, bit synchronization, frame synchronization and the like of transmission data are completed in a physical layer, and the functions and the realization of data encapsulation, disassembly and assembly, bus arbitration, error control, message filtering, time sequence control and the like are completed in a data link layer according to an MLVDS communication protocol.

The data conversion module mainly realizes data conversion between the USB3.0 transmission module and the MLVDS communication module. When the upper computer sends a command, data are transmitted to the data converter through the USB3.0 interface, the FPGA judges that the USB3.0 communication module has received the data through the GPIF II interface detection zone bit, the data are read into the data conversion module, effective data are converted into 8-bit data, and the data are written into the command cache FIFO to realize the clock-crossing synchronization of the data. And reading data from the FIFO into the MLVDS communication module when the FIFO reading signal rises, determining the execution function, the object, the trigger mechanism and the like of the command by comparing the median value of the command register group in the command analysis module, and regenerating a command data frame. Adding a start bit, an arbitration field, a check bit and a stop bit in a bus manager according to an MLVDS bus communication protocol to form an MLVDS data packet format, converting the MLVDS data packet format into serial data, sending the serial data to an MLVDS interface module, calling a sending module for realizing the MLVDS in the module, and sending the data to target bottom equipment through a sending port through an ADN4693E chip to finish one-time sending.

When receiving the upload data, when the receiving module port of the MLVDS detects that the data start bit is valid, the receiving module port starts receiving, and after completing the synchronization of data transmission in the physical signaling layer, the data is converted into parallel data and transmitted to the MLVDS bus management module. After CRC check is carried out on transmission data received by the MLVDS correctly, effective data are transmitted to a DDR3 cache module under the condition that a data effective flag signal is high, effective acquisition data, node information and channel address information are written into the DDR3, a large amount of data cache is realized, and the rate of returned data is in a controllable range. Then the USB3.0 communication module reads out data from the DDR3 cache module, and forms 32 bit data to be transmitted to a USB3.0 chip, and the data is uploaded to an upper computer under the control of the FPGA

Although the wireless sensor network has similarities with the wireless ad hoc network, there are also great differences. The sensor network is a network system integrating monitoring, control and wireless communication, the number of nodes is larger, and the nodes are more densely distributed; nodes are more prone to failure due to environmental impact and energy depletion; environmental interference and node faults easily cause changes of network topology structures; typically, most sensor nodes are stationary. In addition, the sensor nodes have very limited energy, processing, storage, and communication capabilities. The primary design goal of traditional wireless networks is to provide high quality of service and efficient bandwidth utilization, and secondly to consider energy savings; the primary design goal of sensor networks is efficient energy utilization, which is one of the most important differences between sensor networks and conventional networks.

The accelerometer is an important sensitive element of an inertial navigation and inertial guidance system, is used for measuring the acceleration of a carrier relative to the motion of an inertial space, and can obtain the position of a carrier space through integration and related operation. The accelerometer is a direct measurement element that continuously measures the acceleration of the vehicle and then calculates the vehicle speed, longitude and latitude, and range via a computer. The KXR94 accelerometer chip used in the present system is a three-axis accelerometer manufactured by Kionix corporation. The accelerometer has been designed to compensate for temperature and voltage fluctuation induced deviations internally, so voltage and temperature induced deviations are small. The measurement range of the device is +/-2 g, the sensitivity coefficient is 560 mV/g, the nonlinearity is 0.1%, and the zero acceleration drift is +/-150 mg; 2.8-3.3V can work; the power consumption is very low, and the quiescent current is about 1.1 mA.

The Micro Inertial Measurement Unit (MIMU) is not only applied to the traditional application field due to the characteristics of small size, low cost and the like. The utility model designs a high integrated, low-power consumption and low-cost miniature inertia measuring device can calculate information such as course angle, pitch angle and the position of carrier accurately, has laid the basis for the motion trail tracking experiment, also can be applied to fields such as civilian aviation, vehicle control, robot, industrial automation, prospect, toy widely.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An intelligent anti-theft monitoring system of a numerical control machine based on a wireless sensor network is characterized by comprising a monitoring terminal, a sink node and a sensor network consisting of a plurality of sensor nodes arranged on the numerical control machine, wherein each sensor node arranged on the numerical control machine is connected with the monitoring terminal through the sink node, the sensor nodes comprise an angular velocity sensor array, an acceleration sensor array, a vibration sensor array, a multiplexing switch, a data preprocessing module, a positioning module, a video acquisition module, a microprocessor module, a multi-node data transmission module, an LCD (liquid crystal display), an input and output module, an interface module and a power module, the angular velocity sensor array, the acceleration sensor array and the vibration sensor array are respectively connected with the microprocessor module through the multiplexing switch and the data preprocessing module in sequence, the positioning module, the video acquisition module, the data transmission module, the LCD display, the input and output module, the interface module and the power supply module are respectively connected to corresponding ports of the microprocessor module.

2. The intelligent anti-theft monitoring system for the numerical control machine tool based on the wireless sensor network is characterized in that according to the claim 1: the chip model of the microprocessor module is a 16-bit controller of MSP 430.

3. The intelligent anti-theft monitoring system for the numerical control machine tool based on the wireless sensor network is characterized in that according to the claim 1: the multi-node data transmission module comprises an FPGA main control module and an MLVDS communication module connected with the FPGA main control module.

4. The intelligent anti-theft monitoring system for the numerical control machine tool based on the wireless sensor network is characterized in that: the MLVDS communication module comprises an ADC module, a controller module, a first MLVDS communication unit and a first MLVDS interface chip which are sequentially connected.

5. The intelligent anti-theft monitoring system for the numerical control machine tool based on the wireless sensor network is characterized in that: the FPGA main control module comprises a USB interface circuit, a USB communication management module, DDR3 SDRAM, a DDR3 controller, a Flash memory, a data management module, a second MLVDS communication unit and a second MLVDS interface chip; the USB interface circuit is connected with the data management module through the USB communication management module, the DDR3 SDRAM is connected with the data management module through the DDR3 controller, the FlasH memory is connected with the data management module through the FlasH controller, and the data management module is connected with the second MLVDS interface chip through the second MLVDS communication unit.

6. The intelligent anti-theft monitoring system for the numerical control machine tool based on the wireless sensor network is characterized in that: the data management module selects a Spartan-6 series programmable logic device 6slx16csg324 chip of Xilinx company as a core controller.

7. The intelligent anti-theft monitoring system for the numerical control machine tool based on the wireless sensor network is characterized in that: the USB interface circuit adopts FX3 series CYUSB3014 chips from Seplacian.

8. The intelligent anti-theft monitoring system for the numerical control machine tool based on the wireless sensor network is characterized in that according to the claim 1: the monitoring terminal comprises a data receiving and transmitting module, a singlechip module, a display module, an alarm module, a GSM module and a memory module; the data transceiver module, the display module, the alarm module, the GSM module and the memory module are respectively connected with the single chip microcomputer module.

9. The intelligent anti-theft monitoring system for the numerical control machine tool based on the wireless sensor network is characterized in that according to the claim 1: the power module comprises a commercial power module and a power supply conversion circuit, and the commercial power module is connected with the microprocessor module through the power supply conversion circuit.

10. The intelligent anti-theft monitoring system for the numerical control machine tool based on the wireless sensor network is characterized in that: the power supply conversion circuit comprises a DC12V voltage input end, a first diode, a first capacitor, a second capacitor, an LM2576S-5.0 power supply chip, a second diode, a first inductor, a third capacitor, a 5V voltage output end, a 5V voltage input end, a fourth capacitor, a TPS7A7001 power supply chip, a first resistor, a second resistor, a fifth capacitor and a 3.3V voltage output end;

the voltage input end of the DC12V is respectively connected with the cathode of a first diode, one end of a first capacitor, one end of a second capacitor and the VIN end of the LM2576S-5.0 power supply chip, and the other end of the first diode is respectively connected with the other end of the first capacitor, the other end of the second capacitor, the EN # end of the LM2576S-5.0 power supply chip, the GND end of the LM2576S-5.0 power supply chip, the anode of the second diode and one end of a third capacitor and is grounded; the cathode of the second diode is respectively connected with the VOUT end of the LM2576S-5.0 power supply chip and one end of the first inductor, and the other end of the first inductor is respectively connected with the other end of the third capacitor, the FB end of the LM2576S-5.0 power supply chip and the 5V output end;

the 5V input end is respectively connected with one end of a fourth capacitor, the EN end of the TPS7A7001 power supply chip and the IN end of the TPS7A7001 power supply chip, the other end of the fourth capacitor is grounded, the GND end of the TPS7A7001 power supply chip is connected with one end of a first resistor, the other end of the first resistor is respectively connected with one end of a second resistor and the FB end of the TPS7A7001 power supply chip, the other end of the second resistor is respectively connected with one end of a fifth capacitor, the OUT end of the TPS7A7001 power supply chip and the 3.3V output end, and the other end of the fifth capacitor is grounded.

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