A detection device for a MICRO PULSE protocol sensor

Abstract

This invention relates to a detection device for a MICRO PULSE protocol sensor, comprising a main control MCU, a power supply module, a Micro Pulse pre-processing unit, a parameter storage unit, an RS232 serial port unit, a TCP / IP protocol unit, and an OLED display. The Micro Pulse pre-processing unit is also connected to the Micro Pulse protocol sensor. The RS232 serial port unit and the TCP / IP protocol unit are both connected to a remote user. The power supply module provides a 5V regulated power supply and a 3.3V regulated power supply. This device uniquely employs a common low-end microcontroller + FreeRTOS to achieve high-frequency, fast master-slave communication between the device and the position sensor. It not only accurately reads data from the MICRO PULSE protocol sensor but also has networking capabilities, enabling real-time data display and facilitating use by maintenance personnel in various scenarios.

Description

Technical Field

[0001] This patent application belongs to the technical field of electrical equipment for cold and hot rolling production. More specifically, it relates to a detection device for MICROPULSE protocol sensors. Background Art

[0002] Since the cold and hot rolling production lines require high-speed and precise control of rolling mill equipment, the selected position sensors must be high-speed and high-precision sensors. Currently, most of the control systems supporting the cold and hot rolling production lines are dedicated systems based on the Micro Pulse technology protocol. The position sensors of this MICRO PULSE protocol are usually installed inside the hydraulic cylinders, and the disassembly and assembly are complex. It is necessary to use a dedicated acquisition template and connect to the PLC system to detect and determine the status of the sensors.

[0003] Therefore, it is necessary to develop a portable device to read and write data in the position sensors of this protocol, and make it possible to detect and maintain the position sensors in the field environment. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a detection device for position sensors under the MICRO PULSE protocol, which can conveniently detect and determine the status of the position sensors, and make it possible to detect and maintain the position sensors in the field environment.

[0005] To solve the above problems, the technical solution adopted by the present invention is:

[0006] A detection device for MICRO PULSE protocol sensors includes a main control MCU, and a Micro Pulse pre-processing unit, a parameter storage unit, an RS232 serial port unit, a TCP / IP protocol unit, and an OLED display screen connected to the main control MCU. The Micro Pulse pre-processing unit is also connected to the MICRO PULSE protocol sensor, and both the RS232 serial port unit and the TCP / IP protocol unit are connected to remote users;

[0007] The Micro Pulse pre-processing unit, also known as the differential signal processing unit, is used for differential signal processing. The Micro Pulse pre-processing unit includes a first Micro Pulse pre-processing circuit and a second Micro Pulse pre-processing circuit. The first Micro Pulse pre-processing circuit includes chip U3. Pin 1 of chip U3 is connected to the main control MCU, pins 2 and 3 are connected to GND, pin 6 of chip U3 is connected to resistors R1 and R3 respectively, the other end of resistor R1 is connected to pin 8 of chip U3, and the other end of resistor R3 is connected to the output +Start signal of the Micro Pulse protocol sensor. Pin 7 of chip U3 is connected to resistors R2 and R4 respectively, the other end of resistor R2 is connected to pin 5 of chip U3, and the other end of resistor R4 is connected to the output -Start signal of the Micro Pulse protocol sensor. Pin 5 of chip U3 is also connected to GND, and pin 8 of chip U3 is also connected to VCC.

[0008] The second Micro Pulse pre-processing circuit includes chip U4. Pin 4 of chip U4 is connected to the main control MCU, and pins 2 and 3 are connected to VCC. Pin 6 of chip U4 is connected to resistors R5 and R17 respectively. The other end of resistor R5 is connected to pin 8 of chip U4, and the other end of resistor R17 is output as a +Init signal to the Micro Pulse protocol sensor. Pin 7 of chip U4 is connected to resistors R6 and R16 respectively. The other end of resistor R6 is connected to pin 5 of chip U4, and the other end of resistor R16 is output as a -Init signal to the Micro Pulse protocol sensor. Pin 5 of chip U4 is also connected to GND, and pin 8 of chip U4 is also connected to VCC.

[0009] Furthermore, it also includes a power supply module, which is connected to the main control MCU, Micro Pulse pre-processing unit, parameter storage unit, RS232 serial port unit, TCP / IP protocol unit, and OLED display. The power supply module includes a DC 5V regulated power supply, which is converted to a DC 3.3V regulated power supply to power the main control MCU and RS232 serial port unit. The power supply module is used to provide both 5V and 3.3V regulated power supplies.

[0010] The DC 5V regulated power supply includes component U1. Capacitor C1 and capacitor EC1 are connected in parallel between pins 1 and 3 of component U1. Pin 1 of component U1 is also connected to diode D0. The other end of diode D0 is connected to +Vin. Pin 3 of component U1 is connected to GND. Pin 2 of component U1 is connected to inductor L1 and diode D1 respectively. The other end of inductor L1 is connected to capacitor EC2 and pin 4 of component U1. The other end of capacitor EC2 is connected to GND.

[0011] The DC 3.3V regulated power supply includes component U2. Pin 1 of component U2 is connected to GND, and pin 3 of component U2 is connected to the other end of inductor L1. Capacitors C2 and EC3 are connected in parallel between pin 3 of component U2 and GND. Pin 3 of component U2 also outputs a 3.3V regulated power supply through inductor L2.

[0012] Furthermore, the main control MCU is a 32-bit microcontroller, model STM32F103C8T6; the Micro Pulse pre-processing unit uses the SN65LBC184 chip.

[0013] Furthermore, the TCP / IP protocol unit uses the Ethernet W5500 chip, and the RS232 serial port unit uses the SP3232EEN chip.

[0014] Furthermore, the OLED display connects to the main control MCU via a software-simulated IIC protocol interface.

[0015] Furthermore, the parameter storage unit performs read and write operations through the IIC bus interface. The parameter storage unit includes component U13. Pins 1-4 and pin 4 of component U13 are all connected to GND. Pin 8 of component U13 is connected to VCC and capacitor C29. The other end of capacitor C29 is connected to GND. Pin 6 of component U13 is connected to VCC through resistor R20, and pin 5 of component U13 is connected to VCC through resistor R21.

[0016] Furthermore, component U13 is model number AT24C02.

[0017] Furthermore, the OLED display is a curved screen.

[0018] Furthermore, the Micro Pulse preprocessing unit connects to the MICRO PULSE protocol sensor via a dedicated Micro Pulse interface and a Micro Pulse terminal block port.

[0019] Furthermore, the RS232 serial port unit connects to the user via the D9 pin interface, and the TCP / IP protocol unit connects to the user via the RJ45 interface.

[0020] Due to the adoption of the above technical solution, the beneficial effects achieved by this invention are:

[0021] 1) Portability. Currently, most position sensors used in cold and hot rolling mills are built into hydraulic cylinders, making disassembly and assembly time-consuming and labor-intensive. Each time a hydraulic cylinder is repaired or a position sensor problem is suspected, it must be connected to a PLC control system and processed through a dedicated control board from manufacturers like ABB before the sensor status can be checked. With this device, personnel can analyze the position sensor signal waveform at the inlet, program it based on field experience, and accurately display the position sensor status, facilitating field use. It is also compatible with sensors from major companies using the MICRO PULSE protocol. It is not limited by foreign technical barriers, allowing for independent control, which is a significant advantage for domestically produced operations.

[0022] 2) Low cost. It is understood that large domestic and international companies implement this function using FPGA and DSP chips, which is costly. However, this device can achieve the same functionality using a common low-end microcontroller and a dedicated real-time operating system (FreeRTOS). It enables high-frequency, fast master-slave communication (500 times / second) between this device and Micro Pulse protocol position sensors, significantly reducing device cost and facilitating widespread adoption.

[0023] 3) Signal accuracy and response speed are guaranteed. This device requires high-frequency, fast master-slave communication (500 times / second) with the position sensor. Through algorithm design, a microcontroller program is written in KEILC. The core is the FreeRTOS real-time operating system, with data reading set as the highest priority task. The capture function of the advanced timer 1 inside the main control MCU is used to capture the pulse period, and mathematical calculations are performed through stored parameters to calculate the real-time displacement, thereby ensuring signal accuracy and response speed.

[0024] 4) Power Supply Compatibility. Foreign manufacturers' professional control boards use DC 24V power, requiring a dedicated power supply. This patented design allows for normal operation using ordinary batteries and is compatible with a wide voltage range, from DC 10V to 26V. Figure 3 As shown, it has a wide range of applications.

[0025] 5) Multiple interfaces: Three types of interface circuits are designed, covering TCP / IP protocol unit, RS232 serial port unit and OLED interface, which can meet the application environment of different interfaces.

[0026] 6) This patent provides a portable device for the position sensor of the MICRO PULSE protocol in cold and hot rolling production lines, which facilitates on-site inspection and maintenance of the sensor by maintenance personnel. It can not only accurately read the data of the MICRO PULSE protocol sensor, but also has network connectivity and can display data information in real time, making it convenient for maintenance personnel to use and greatly improving maintenance efficiency and quality.

[0027] 7) This device, through the interpretation of Micro Pulse protocol sensor data transmission, uniquely employs a common low-end microcontroller + a dedicated real-time operating system (FreeRTOS) to achieve high-frequency, fast master-slave communication (500 times / second) between the device and the Micro Pulse protocol position sensor. It combines Modbus-TCP / IP and Modbus-RTU protocols with the STM32F103C8T6 microcontroller, enabling remote transmission via network interface and serial port (expandable to RS485). Simultaneously, the read displacement data is displayed in real-time on an OLED screen. As a portable device, it makes it possible to inspect and maintain Micro Pulse protocol position sensors in the field. Attached Figure Description

[0028] Figure 1 This is a connection block diagram of the device;

[0029] Figure 2 This is the circuit diagram of the power supply module of this device;

[0030] Figure 3 This is a block diagram of the power supply module of this device;

[0031] Figure 4 This is the logic circuit of the main control MCU of this device;

[0032] Figure 5 This is the hardware TCP / IP protocol circuit diagram of the Ethernet W5500 chip in this device;

[0033] Figure 6 This is the hardware TCP / IP interface circuit diagram of the Ethernet W5500 chip in this device;

[0034] Figure 7 This is the hardware main control chip circuit diagram of the RS232 serial port unit in this device;

[0035] Figure 8 This is a diagram showing the correspondence between the triggering and receiving pulses of this device;

[0036] Figure 9 This is a diagram showing the display data of the OLED screen of this device;

[0037] Figure 10 This is the circuit diagram of the parameter storage unit of this device;

[0038] Figure 11 These are the SWD program writing interface, MicroPulse protocol sensor interface, and OLED driver interface of this device;

[0039] Figure 12This is the first Micro Pulse pre-processing circuit of the device, used for pulse data return;

[0040] Figure 13 This is the second Micro Pulse pre-processing circuit of the device, used for pulse data triggering;

[0041] Figure 14 This is a screenshot of part of the program of this device. Detailed Implementation

[0042] The present invention will be further described in detail below with reference to the embodiments.

[0043] A detection device for a MICRO PULSE protocol sensor is disclosed. The process flow of this device includes steps such as scheme determination, project creation, hardware design, software development, PCB fabrication, software simulation, hardware soldering, and operation and debugging. Three interface circuits are designed, covering TCP / IP, RS232, and OLED interfaces, as well as power supply circuits, to meet the application environments of different interfaces.

[0044] The hardware components include a main control MCU (embedded microcontroller), a TCP / IP protocol unit (TCP / IP protocol conversion chip), an RS232 serial port unit circuit, power supply peripheral auxiliary circuits, storage circuits, interface circuits, a power supply module, and an OLED display screen. It supports remote user access to real-time data via Modbus-TCP / IP and Modbus-RTU protocols, and simultaneously drives the OLED display screen to display data from the Micro Pulse protocol sensor in real time via the IIC protocol. The software components include a microcontroller control program, real-time data display on the OLED screen, and Modbus-TCP / IP and Modbus-RTU protocols for remote data transmission. The software components are all based on the hardware, uniquely employing a common low-end microcontroller + a dedicated real-time operating system (FreeRTOS) to achieve high-frequency, fast master-slave communication (500 times / second) between this device and the Micro Pulse protocol position sensor.

[0045] like Figure 1 First, design the block diagram. This detection device includes a main control MCU, and a Micro Pulse pre-processing unit, a parameter storage unit, an RS232 serial port unit, a TCP / IP protocol unit, and an OLED display screen, all connected to the main control MCU. The Micro Pulse pre-processing unit is also connected to the Micro Pulse protocol sensor. The RS232 serial port unit and the TCP / IP protocol unit are both connected to remote users. Specifically, remote users can read real-time data through the Modbus-TCP / IP protocol and the Modbus-RTU protocol.

[0046] After the connection diagram is designed, the PCB design is drawn. The design concept for the PCB design is as follows: each functional module is laid out reasonably, and the power module, high-power circuits, and high-voltage circuits are arranged in one corner of the board to reduce their interference with other circuits; the board uses a double-layer board, and the shortest possible traces are used. Trace bends are obtuse angles, power lines are thickened, and data, address, and control buses are routed separately.

[0047] Specifically, this also includes power supply modules, such as Figure 2 , Figure 3 The power supply module provides a 5V regulated power supply and a 3.3V regulated power supply. The power supply module is connected to the main control MCU, Micro Pulse pre-processing unit, parameter storage unit, RS232 serial port unit, TCP / IP protocol unit, and OLED display. The power supply module includes a DC 5V regulated power supply, which is converted to a DC 3.3V regulated power supply to power the main control MCU and RS232 serial port unit.

[0048] like Figure 2 On the left, the DC 5V regulated power supply includes component U1. Capacitor C1 and capacitor EC1 are connected in parallel between pins 1 and 3 of component U1. Pin 1 of component U1 is also connected to diode D0. The other end of diode D0 is connected to +Vin. Pin 3 of component U1 is connected to GND. Pin 2 of component U1 is connected to inductor L1 and diode D1 respectively. The other end of inductor L1 is connected to capacitor EC2 and pin 4 of component U1. The other end of capacitor EC2 is connected to GND.

[0049] like Figure 2 On the right, the DC 3.3V regulated power supply includes component U2. Pin 1 of component U2 is connected to GND, and pin 3 of component U2 is connected to the other end of inductor L1. Capacitors C2 and EC3 are connected in parallel between pin 3 of component U2 and GND. Pin 3 of component U2 also outputs a 3.3V regulated power supply through inductor L2.

[0050] In practical applications, the XL1507-5.0 power management chip is used. This high-efficiency, high-voltage step-down DC-DC converter features a wide input voltage range of 4.5V to 40V, a fixed 150kHz switching frequency, and can provide a maximum output current of 3A. It boasts low ripple, excellent line and load regulation, and an integrated fixed-frequency oscillator and frequency compensation circuit, simplifying circuit design. A rechargeable lithium battery is generally recommended as the power supply, making it convenient for handheld use and maintenance personnel, thus providing strong support for smooth production.

[0051] exist Figure 3As can be seen, the DC 5V regulated power supply powers the Micro Pulse pre-processing unit, parameter storage unit, TCP / IP protocol unit, and OLED display, while the DC 3.3V regulated power supply powers the main control MCU and RS232 serial port unit.

[0052] like Figure 4 The main control MCU is a 32-bit microcontroller, model STM32F103C8T6, which serves as the arithmetic unit of this device. It utilizes an ARM Cortex-M core STM32 series 32-bit microcontroller. It has 64KB of program storage, requires a voltage of 2V~3.6V, and operates at a temperature of -40℃~85℃. It provides a low-cost platform for implementing the required functions, featuring a small pin count, low system power consumption, excellent computing performance, and advanced interrupt functionality. The MCU has 20KB of built-in RAM for data storage. The Micro Pulse pre-processing unit uses the SN65LBC184 chip.

[0053] The TCP / IP protocol unit uses the W5500 Ethernet chip, and the RS232 serial port unit uses the SP3232EEN chip. The RS232 serial port unit connects to the user via a D9 pin interface, and the TCP / IP protocol unit connects to the user via an RJ45 interface.

[0054] like Figure 5 , Figure 6 , Figure 7 The TCP / IP protocol unit uses the Ethernet W5500 chip, which encapsulates the full TCP / IP protocol stack, with a maximum transmission rate of up to 100 Mbps, for interface services in different environments. The TCP / IP Ethernet circuit design, with a full hardware TCP / IP protocol stack, ensures stable and secure module signals. Figure 7 The circuit diagram of the hardware main control chip of the RS232 serial port unit in this device is shown.

[0055] Figure 8 The diagram illustrates the correspondence between the trigger and receive pulses in this device. The three dashed arrows in the diagram are used for separation and graphical transformation; the top represents triggering, and the bottom represents receiving. This diagram is only for qualitative observation of the trigger-receive correspondence and is not for quantitative analysis, therefore no coordinates are provided. The OLED display connects to the main control MCU via a software-simulated IIC protocol interface. The OLED display module provides information assistance for portability, such as... Figure 9 The information shown is a display data diagram of the OLED screen, providing a user-friendly human-computer interaction interface. Of course, the OLED display can be a curved screen. In addition, there are SWD program writing interfaces, MicroPulse protocol sensor interfaces, and OLED driver interfaces, combined with... Figure 11 I will not go into details.

[0056] The parameter storage unit performs read and write operations via the IIC bus interface, see... Figure 10 It provides calibration data for internal program calculations, including component U13. Pins 1-4 and pin 4 of component U13 are all connected to GND. Pin 8 of component U13 is connected to VCC and capacitor C29. The other end of capacitor C29 is connected to GND. Pin 6 of component U13 is connected to VCC via resistor R20, and pin 5 of component U13 is connected to VCC via resistor R21.

[0057] Specifically, component U13 is an AT24C02 chip, a 2K-bit serial CMOS E2PROM containing 256 8-bit bytes. This device performs read and write operations through the IIC bus interface and has a dedicated write protection function.

[0058] The Micro Pulse pre-processing unit connects to MICRO PULSE protocol sensors via a dedicated Micro Pulse interface and Micro Pulse terminal blocks. See details... Figure 12 , Figure 13 .

[0059] The Micro Pulse pre-processing unit, also known as the differential signal processing unit, is used for differential signal processing. Combined with... Figure 12 , Figure 13 Let's take a look. Figure 12 This is the first Micro Pulse pre-processing circuit for the Micro Pulse protocol input signal of this device, used for differential signal return pulses. The first Micro Pulse pre-processing circuit includes chip U3. Pin 1 of chip U3 is connected to the main control MCU, pins 2 and 3 are connected to GND, pin 6 of chip U3 is connected to resistors R1 and R3 respectively, the other end of resistor R1 is connected to pin 8 of chip U3, and the other end of resistor R3 is connected to the output +Start signal of the Micro Pulse protocol sensor; pin 7 of chip U3 is connected to resistors R2 and R4 respectively, the other end of resistor R2 is connected to pin 5 of chip U3, and the other end of resistor R4 is connected to the output -Start signal of the Micro Pulse protocol sensor; pin 5 of chip U3 is also connected to GND, and pin 8 of chip U3 is also connected to VCC.

[0060] Figure 13This is the second Micro Pulse pre-processing circuit for the Micro Pulse protocol input signal of this device, used for differential signal trigger pulses. The second Micro Pulse pre-processing circuit includes chip U4. Pin 4 of chip U4 is connected to the main control MCU, pins 2 and 3 are connected to VCC, pin 6 of chip U4 is connected to resistors R5 and R17 respectively, the other end of resistor R5 is connected to pin 8 of chip U4, and the other end of resistor R17 is output as a +Init signal to the Micro Pulse protocol sensor; pin 7 of chip U4 is connected to resistors R6 and R16 respectively, the other end of resistor R6 is connected to pin 5 of chip U4, and the other end of resistor R16 is output as a -Init signal to the Micro Pulse protocol sensor; pin 5 of chip U4 is also connected to GND, and pin 8 of chip U4 is also connected to VCC.

[0061] OLED displays are curved screens, which are convenient for displaying data information, such as... Figure 6 This is real-time data captured after the device was put into use.

[0062] like Figure 14 The screenshot shows a portion of the control logic. The microcontroller program was written using KEILC. The core of the program is the FreeRTOS real-time operating system. Data reading is set as the highest priority task. The program uses the capture function of the MCU's internal advanced timer 1 to capture the pulse cycle and performs mathematical calculations using stored parameters to calculate the real-time displacement.

[0063] This device uses reliable components, providing a fundamental guarantee for improved system reliability. For example, the microprocessor used is the STM32F103 MCU, an industrial-grade ARM chip that requires no additional external memory, reducing the need for external components and improving reliability. Furthermore, the processor has a built-in watchdog timer and 64K+20K of in-circuit read / write memory, providing a basic guarantee for improved reliability in subsequent software programming. High-quality ceramic capacitors are used for the bypass capacitors of each integrated circuit to improve the system's anti-interference performance. A DC / DC isolated switching power supply is also used, with tantalum capacitors used for power supply filtering.

[0064] This device uniquely employs a common low-end microcontroller combined with a dedicated real-time operating system (FreeRTOS) to achieve high-frequency, fast master-slave communication (500 times / second) between itself and a Micro Pulse protocol position sensor. The main control MCU embeds the FreeRTOS real-time operating system, setting the task of reading data uploaded from the Micro Pulse sensor as the highest priority. After the task is triggered, the MCU's internal advanced timer 1 captures the pulse trigger cycle, then reads the calibration data stored in the AT24C02, performs mathematical calculations, and converts it into the actual displacement. Other tasks are automatically assigned and processed by the FreeRTOS system.

[0065] Position sensors using the MICRO PULSE protocol are widely used in cold and hot rolling processes. Their advantage lies in high-speed, accurate data transmission. However, their application requires the use of the original manufacturer's proprietary data acquisition modules, making on-site sensor testing and maintenance very inconvenient. This device was developed to address this issue. The working process of this device is as follows: [The text then abruptly shifts to a different topic:] ...combining... Figure 5 Following the MICRO PULSE protocol sensor wiring method, connect the sensor to the external interface of this device. After power-on, the device automatically and periodically sends trigger pulses. Upon receiving the trigger pulse, the MICRO PULSE protocol sensor immediately returns a corresponding displacement pulse. This device detects the returned pulse in real time, calculates the pulse period, calculates the corresponding displacement length, and sends it to the OLED display for real-time display. If remote data transmission is required, data can be collected by connecting to a network port or RS232 serial port unit as needed.

Claims

1. A detection device for a MICRO PULSE protocol sensor, characterized in that: The main control MCU is connected with a Micro Pulse pre-processing unit, a parameter storage unit, an RS232 serial port unit, a TCP / IP protocol unit, and an OLED display screen. The Micro Pulse pre-processing unit is used for differential signal processing and includes a first Micro Pulse pre-processing circuit and a second Micro Pulse pre-processing circuit. The first Micro Pulse pre-processing circuit includes a chip U3, the pin 1 of the chip U3 is connected with the main control MCU, the pins 2 and 3 are connected with GND, the pin 6 of the chip U3 is connected with a resistor R1 and a resistor R3, the other end of the resistor R1 is connected with the pin 8 of the chip U3, and the other end of the resistor R3 is connected with an output +Start signal of a Micro Pulse protocol sensor.

2. The detection device of a MICRO PULSE protocol sensor according to claim 1, characterized in that: The pin 7 of the chip U3 is connected with a resistor R2 and a resistor R4, the other end of the resistor R2 is connected with the pin 5 of the chip U3, and the other end of the resistor R4 is connected with an output -Start signal of the Micro Pulse protocol sensor. The pin 5 of the chip U3 is further connected with GND, and the pin 8 of the chip U3 is further connected with VCC. The second Micro Pulse pre-processing circuit includes a chip U4, the pin 4 of the chip U4 is connected with the main control MCU, the pins 2 and 3 are connected with VCC, the pin 6 of the chip U4 is connected with a resistor R5 and a resistor R17, the other end of the resistor R5 is connected with the pin 8 of the chip U4, and the other end of the resistor R17 is connected with a +Init signal output to the Micro Pulse protocol sensor. The pin 7 of the chip U4 is connected with a resistor R6 and a resistor R16, the other end of the resistor R6 is connected with the pin 5 of the chip U4, and the other end of the resistor R16 is connected with a -Init signal output to the Micro Pulse protocol sensor. The pin 5 of the chip U4 is further connected with GND, and the pin 8 of the chip U4 is further connected with VCC. The power supply module is connected with the main control MCU, the Micro Pulse pre-processing unit, the parameter storage unit, the RS232 serial port unit, the TCP / IP protocol unit, and the OLED display screen. The DC 5V voltage stabilizing power supply includes an element U1, the pins 1 and 3 of the element U1 are connected with a capacitor C1 and a capacitor EC1 in parallel, the pin 1 of the element U1 is further connected with a diode D0, the other end of the diode D0 is connected with a +Vin, the pin 3 of the element U1 is connected with GND, and the pin 2 of the element U1 is connected with an inductor L1 and a diode D1. The other end of the inductor L1 is connected with a capacitor EC2 and the pin 4 of the element U1, and the other end of the capacitor EC2 is connected with GND. The DC 3.3V voltage stabilizing power supply comprises an element U2, the 1-pin of the element U2 is connected with GND, the 3-pin of the element U2 is connected with the other end of the inductor L1; the capacitor C2 and the capacitor EC3 are connected in parallel between the 3-pin of the element U2 and GND, and the 3-pin of the element U2 further outputs 3.3V voltage stabilizing power supply through the inductor L2.

3. The MICRO PULSE protocol sensor detection device of claim 1, wherein: The main control MCU is a 32-bit microcontroller, and the model thereof is STM32F103C8T6; the SN65LBC184 chip is adopted for the Micro Pulse front-end processing unit.

4. The MICRO PULSE protocol sensor detection apparatus of claim 1, wherein: The TCP / IP protocol unit adopts the Ethernet W5500 chip, and the RS232 serial port unit adopts the SP3232EEN chip.

5. The MICRO PULSE protocol sensor detection apparatus of claim 1, wherein: The OLED display screen is connected with the main control MCU through a software simulation IIC protocol interface.

6. The MICRO PULSE protocol sensor detection apparatus of claim 1, wherein: The parameter storage unit is read and written through an IIC bus interface, and the parameter storage unit comprises an element U13, the 1-4 pin and the 4-pin of the element U13 are all connected with GND, the 8-pin of the element U13 is connected with VCC and the capacitor C29, and the other end of the capacitor C29 is connected with GND; the 6-pin of the element U13 is connected with VCC through the resistor R20, and the 5-pin of the element U13 is connected with VCC through the resistor R21.

7. The MICRO PULSE protocol sensor detection apparatus of claim 6, wherein: The element U13 is of the model AT24C02.

8. A MICRO PULSE protocol sensor detection device according to any one of claims 1 to 7, characterized in that: The OLED display screen is a curved screen.

9. A MICRO PULSE protocol sensor detection device according to any one of claims 1 to 7, characterized in that: The Micro Pulse front-end processing unit is connected with the MICRO PULSE protocol sensor through a Micro Pulse special interface and a Micro Pulse terminal port.

10. A MICRO PULSE protocol sensor detection device according to any one of claims 1 to 7, characterized in that: The RS232 serial port unit is connected with the user through a D9 pin interface, and the TCP / IP protocol unit is connected with the user through an RJ45 interface.

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