Intelligent detection device for special transformer acquisition terminal

Abstract

The utility model relates to an intelligent detection device for a special transformer acquisition terminal. The intelligent detection device comprises a power management module, a state quantity detection module, a switching value input module, an upper computer, a communication module, a control module, a display module, a pulse generation module and a pulse width detection module. After wiring of the intelligent detection device is completed, full-automatic remote testing can be carried out, and manual participation is not needed in the whole process. According to the utility model, the test efficiency of the special transformer acquisition terminal is greatly improved, the test time is shortened, the automation level is improved, and the test cost is reduced.

Description

Technical Field

[0001] The utility model relates to an intelligent detection device for a special transformer acquisition terminal. Background Art

[0002] During the test of the special transformer acquisition terminal, due to the large number of terminal terminals, complex functions to be tested, and the limitations of the platform test environment, it is time-consuming and laborious to detect the opening and closing state, relay action detection, switch analog input and adjustable pulse input, and the operation and detection process are cumbersome; when performing performance tests, the use of external equipment is likely to affect the test results; in addition, during platform testing, some existing auxiliary test equipment is limited in use and cannot be used in real time during the test process. The entire test process requires manual participation, and on-site wiring and disconnection, phenomenon observation, and data recording are required, which is time-consuming and laborious.

[0003] In order to improve the inspection rate of special transformer acquisition terminals and strengthen the construction of the field of measuring electrical variables, all produced special transformer acquisition terminals must be inspected in accordance with the special transformer design specifications to ensure that their various functions can meet the requirements of the specifications. However, during the inspection process, there are many items to be tested for special transformer acquisition terminals. Different items to be tested require manual use of different external tools and a large number of wiring to complete the inspection; especially when performing performance tests, it is necessary to consider the impact of external tools on the test results; in addition, when conducting platform tests, due to environmental factors, the use of some auxiliary test equipment is limited; resulting in a lack of effective detection devices, low inspection efficiency, and cumbersome inspection process, which brings inconvenience to the inspection work. Utility Model Content

[0004] The technical problem to be solved by the utility model is generally to provide an intelligent detection device for a special transformer acquisition terminal.

[0005] In order to solve the above problems, the technical solution adopted by the utility model is:

[0006] An intelligent detection device for type III special transformer acquisition terminal includes a power management module, a state quantity detection module, a switch quantity input module, a host computer, a communication module, a control module, a display module, a pulse generation module, and a pulse width detection module. After the intelligent detection device is wired, it can be fully automatically remotely tested without manual participation. The utility model greatly improves the test efficiency of the special transformer acquisition terminal, shortens the test time, improves the automation level, and reduces the test cost.

[0007] An intelligent detection device for a special transformer acquisition terminal includes a power management module, a state quantity detection module, a switch quantity input module, a host computer, a communication module, a control module, and a display module; wherein:

[0008] The input end of the control module is electrically connected to the power management module, the state quantity detection module, and the switch quantity input module;

[0009] The control module is interactively connected to the display module and the communication module respectively;

[0010] The power management module is also electrically connected to the state quantity detection module, the switch quantity input module, the communication module and the display module;

[0011] The host computer is electrically connected to the communication module.

[0012] As a further improvement of the above technical solution:

[0013] The power management module includes AC-DC module, DC-DC module, LDO module, lithium battery charge and discharge management module and lithium battery;

[0014] The AC-DC module is connected to the AC 220V and the output is connected to the DC-DC module; the DC-DC module is connected to the LDO module; the output of the LDO module is connected to the subsequent load;

[0015] The lithium battery charge and discharge management module is electrically connected to the lithium battery and the DC-DC module respectively;

[0016] The output end of the lithium battery charge and discharge management module is also connected to the LDO module and the subsequent load respectively.

[0017] The state quantity detection module includes resistors R1, R2, R3, R4, R5, R6, capacitors C1, C2, diode DA1, optocoupler UC1, transistor Q1, MOS tube Q2, indicator LED1, strong power terminal J1, and special transformer acquisition terminal opening and closing access terminal J2;

[0018] The left end of the resistor R3 is connected to the 1-pin L phase PL of the strong current terminal J1, and the right end of the resistor R3 is connected to the 1-pin FH_ZHA_L of the special transformer acquisition terminal separation and closing access terminal J2 and the left end of the resistor R4; the right end of the resistor R4 is respectively connected to the upper end of C1, the upper end of DA1, and the 1-pin of the optical coupler UC1;

[0019] The left end of the resistor R5 is connected to the 2nd pin FH_ZHA_N of the special transformer acquisition terminal separation and closing access terminal J2 and the 2nd pin N-phase PN of the strong current terminal J1; the right end of the resistor R5 is respectively connected to the lower end of the capacitor C1, the lower end of DA1, and the 2nd pin of the optical coupler UC1;

[0020] Pin 3 of the optocoupler UC1 is connected to the upper end of R6, the upper end of C2, and the base of the transistor Q1. Pin 4 of the optocoupler UC1 is connected to the upper end of the resistor R1 and the upper end of the resistor R2, and a power supply of 3.3V is connected. The collector of the transistor Q1 is connected to the lower end of the resistor R1, the GPIO pin of the MCU, and the gate of the MOS tube Q2. The upper end of the indicator light LED1 is connected to the lower end of the resistor R2, the lower end of the indicator light LED1 is connected to the drain of the transistor Q2, and the source of the transistor Q2 is connected to the emitter of the transistor Q1, the lower end of the capacitor C2, and the lower end of the resistor R6 are connected to GND.

[0021] The switch quantity input module includes a resistor R7, capacitors C3 and C4, a diode D2, a MOS tube Q3, a relay KR1, a button KT1, and a switch quantity input terminal J3 of a special transformer acquisition terminal;

[0022] The right end of resistor R7 is connected to the IO pin of MCU, the left end of resistor R7 is connected to the gate of transistor Q3, the drain of transistor Q3 is connected to the upper end of button KT1, the upper end of capacitor C4, the lower end of diode D2, and the lower end 4 of relay KR1 coil, the source of transistor Q3 is connected to the lower end of button KT1 and the lower end of capacitor C4, the upper end of capacitor C3 is connected to the upper end of diode D2, and the upper end 5 of relay KR1 coil is connected to the power supply 5V, the normally open contact 3 of relay KR1 is connected to pin 1 YAOX01 of the switch input terminal J3 of the special transformer acquisition terminal, and the normally open contact 1 of relay KR1 is connected to pin 2 MGND of the switch input terminal J3 of the special transformer acquisition terminal.

[0023] The host computer is equipped with host computer software and is connected to the intelligent detection device through the communication module.

[0024] Communication module, including RS-485 wired communication and 4G wireless communication.

[0025] Using 32-bit MCU.

[0026] The control module is also electrically connected to a pulse generation module and a pulse width detection module;

[0027] The pulse generation module includes capacitors C5, C6, C7, resistors R8, R9, digital isolator UC2, MOS tube Q4, bidirectional TVS tube D3, thermistor PTC1, and pulse receiving terminal J4 of the dedicated transformer acquisition terminal;

[0028] Pin 2 of the digital isolator UC2 is connected to the left end of the capacitor C5 and GND, pin 1 of the digital isolator UC2 is connected to the right end of the capacitor C5 and the power supply 3.3V respectively, pin 3 of the digital isolator UC2 is connected to the GPIO of the MCU to generate a PWM wave, pin 8 of the digital isolator UC2 is connected to the left end of the resistor R8, pin 9 of the digital isolator UC2 is connected to the isolation ground MGND and the right end of the capacitor C6, pin 10 of the digital isolator UC2 is connected to the isolation power supply 5V and the left end of the capacitor C6 respectively, the right end of the resistor R8 is connected to the upper end of the capacitor C7, the upper end of the resistor R9, and the gate of the MOS tube Q4, the lower end of the capacitor C7 is connected to MGND, the lower end of the resistor R9, and the source of the MOS tube Q4, the drain of the MOS tube Q4 is connected to the lower end of the bidirectional TVS tube D3 and the left end of PTC1, the upper end of the bidirectional TVS tube D3 is connected to MGND, the right end of the thermistor PTC1 is connected to pin 1 of the pulse receiving terminal J4 of the special transformer acquisition terminal, and pin 2 of the pulse receiving terminal J4 of the special transformer acquisition terminal is connected to MGND.

[0029] An intelligent detection method for a special transformer acquisition terminal, with the aid of the above-mentioned device; the method includes the following steps: first, starting the power management module to supply power; then, the state quantity detection module and / or the switch quantity input module inputs a signal to the control module for detection and / or control; secondly, the control module detects in a pulse manner through the pulse generation module and the pulse width detection module; finally, uploading the detection result to the host computer.

[0030] Beneficial effects of the utility model: The utility model provides an intelligent detection device for type III special transformer acquisition terminal. The device is rich in functions and can meet the test requirements of the special transformer acquisition terminal; an independent power supply is provided to reduce the interference of external factors on the experimental results, and can realize the full automation test of the special transformer acquisition terminal for remote communication, without the need for manual participation, simplifying the test process and improving the test efficiency. The utility model has a reasonable design, low cost, strong and durable, safe and reliable, simple operation, time-saving and labor-saving, money-saving, compact structure and easy use. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a block diagram of the utility model.

[0032] Figure 2 It is a schematic diagram of the structure of the power management module of the utility model.

[0033] Figure 3 It is a partial structural diagram of the state quantity detection module of the utility model.

[0034] Figure 4 It is a schematic diagram of the structure of the switch quantity input module of the utility model.

[0035] Figure 5It is a schematic diagram of the communication module structure of the utility model.

[0036] Figure 6 It is a schematic diagram of the structure of the pulse generation module of the utility model.

[0037] Figure 7 It is a schematic diagram of the pulse adjustment structure of the utility model.

[0038] Figure 8 It is a pulse generation flow chart of the utility model.

[0039] Fig. 9 This is a pulse detection flow chart of the utility model.

[0040] Fig.10 It is a schematic diagram of the appearance structure of the utility model. DETAILED DESCRIPTION

[0041] like Figure 1-10 As shown, the intelligent detection device for the dedicated transformer acquisition terminal of this embodiment,

[0042] See also Figure 1 The intelligent detection device for a special transformer acquisition terminal includes a power management module 1, a state quantity detection module 2, a switch quantity input module 3, a host computer 4, a communication module 5, a control module 6, a display module 7, a pulse generation module 8, and a pulse width detection module 9. The pulse generation module 8 and the pulse width detection module 9 can be implemented using conventional modules.

[0043] Power Management Module, see Figure 2 . The module consists of an AC-DC module, a DC-DC module, an LDO module, a lithium battery charge and discharge management module, and a lithium battery. The AC 220V input outputs a DC 12V through the AC-DC module, and the DC-DC module outputs a DC 5V, which are then connected to the lithium battery charge and discharge management module and the LDO module respectively. The lithium battery charge and discharge management module is responsible for the charge and discharge management of the lithium battery, and is composed of a lithium battery charge and discharge management chip. It can realize overcharge and over-discharge protection of the lithium battery, and automatic charge and discharge switching; when AC 220V is supplied, it will give priority to powering the system and charging the lithium battery. When there is no AC 220V power supply, the lithium battery will power the system; the LDO module converts DC 5V to DC 3.3V; the power management module is responsible for the power management of the entire detection device, and is used to output different levels of voltage 5V and 3.3V, switch the power supply mode according to the application scenario, etc.;

[0044] State quantity detection module, please refer to Figure 3 ,Note Figure 3It is only a part of the state quantity detection module, and the number of circuits can be increased according to actual needs. The state quantity detection module includes resistors R1, R2, R3, R4, R5, and R6, among which R3 is a 3W high-power resistor, capacitors C1 and C2, diode DA1, optocoupler UC1, transistor Q1, MOS tube Q2, indicator LED1, high-voltage terminal J1, and special transformer acquisition terminal separation and closing access terminal J2. The connection relationship is that the left end of R3 is connected to the 1-pin L phase PL of the high-voltage terminal J1, the right end of R3 is connected to the 1-pin FH_ZHA_L of the special transformer acquisition terminal separation and closing access terminal J2, the left end of R4 is connected, the right end of R4 is connected to the upper end of C1, the upper end of DA1, and the 1-pin of the optocoupler UC1, the left end of R5 is connected to the 2-pin FH_ZHA_N of the special transformer acquisition terminal separation and closing access terminal J2, and the 2-pin N phase PN of the high-voltage terminal J1, and the right end of R5 is connected to the lower end of C1 The end, the lower end of DA1, and the 2nd pin of the optocoupler are connected. The 3rd pin of the optocoupler is connected to the upper end of R6, the upper end of C2, and the base of Q1. The 4th pin of the optocoupler and the upper end of R1 and the upper end of R2 are connected to the power supply 3.3V. The collector of Q1 is connected to the lower end of R1, the GPIO pin of MCU, and the gate of MOS tube Q2. The upper end of LED1 is connected to the lower end of R2, the lower end of LED1 is connected to the drain of Q2. The source of Q2 and the emitter of Q1, the lower end of C2, and the lower end of R6 are connected to GND.

[0045] like Figure 3 The intelligent detection device shown for the special transformer acquisition terminal provides the special transformer acquisition terminal with the opening and closing test conditions and indicates the opening and closing status of the terminal; after the state quantity detection module of the intelligent detection device is connected to the strong power PA and PN, under normal circumstances, the special transformer acquisition terminal does not perform the opening and closing operation, and the opening and closing terminals FH_ZHA_L and FH_ZHA_N are in the disconnected state; the intelligent detection device is connected to PL, and through R3 and R4, the light emitter inside the optocoupler UC1 is turned on and returned to PN through R5. When the light emitter of the optocoupler is turned on, the light receiver inside it is turned on at the same time; further, the base voltage of Q1 increases, and after the transistor conduction condition is met, Q1 is turned on, the gate voltage of Q2 is pulled down, Q2 is not turned on, and LED1 is not lit. When the special transformer acquisition terminal is performing opening and closing operations, that is, FH_ZHA_L and FH_ZHA_N are short-circuited, the intelligent detection device is connected to PL and directly returns to PN through R3, the optocoupler behind is short-circuited, the optocoupler is not conducting, Q1 is turned off, the gate of Q2 is pulled up, the NMOS conduction condition is met, Q2 is turned on, and LED1 lights up. The change in Q2 gate voltage is detected by the GPIO of the MCU to facilitate automated process testing. The state quantity detection module of the intelligent detection device provides test conditions for opening and closing for the special transformer acquisition terminal, which is used to test whether the terminal opening and closing operations are normal, and the opening and closing status and opening and closing times of the special transformer acquisition terminal can be displayed in real time through the display module;

[0046] For switch input modules, see Figure 4 .Note Figure 4 It is only a part of the switch input module, and the number of circuits can be increased according to actual needs. The switch input module includes resistor R7, capacitors C3 and C4, diode D2, MOS tube Q3, relay KR1, button KT1, and special transformer acquisition terminal switch input terminal J3. Its connection relationship is: the right end of R7 is connected to the IO pin of MCU, the left end of R7 is connected to the gate of Q3, the drain of Q3 is connected to the upper end of KT1, the upper end of C4, the lower end of D2, and the lower end 4 of KR1 coil, the source of Q3 is connected to the lower end of KT1 and the lower end of C4, the upper end of C3 is connected to the upper end of D2, and the upper end of KR1 coil is connected to the power supply 5V, the normally open contact 3 of KR1 is connected to the 1 pin YAOX01 of J3, and the normally open contact 1 of KR1 is connected to the 2 pin MGND of J3, where MGND is the isolated ground relative to GND.

[0047] like Figure 4 The intelligent detection device for the special transformer acquisition terminal shown in the figure provides the special transformer acquisition terminal with a switching input that simulates the remote signal and door contact of the special transformer acquisition terminal, which can simulate the switching input remote signal and door contact of the special transformer acquisition terminal in actual applications, and verify the detection of the special transformer acquisition terminal on the external switching input; after the switching input module of the intelligent detection device is connected to the GPIO pin of the MCU, it can control the on and off of Q3, and further control the on and off of the relay coil; the default value between each switching input terminal on the special transformer acquisition terminal is 12V, one is the switching input + which is 12V, and the other is the switching input - which is MGND. When the control GPIO outputs a high level, Q3 When the control GPIO outputs a low level, Q3 is turned off, the KR1 coil loses power, and its normally open contact is disconnected, disconnecting the switch input terminal on the special transformer acquisition terminal and turning it into a high level. In addition, the relay can be controlled by the button KT1 to facilitate on-site testing. The diode D2 is connected in parallel to the coil end of the relay KR1 to provide a freewheeling circuit for the induced current generated by the reset of the relay KR1, avoiding the high-voltage spike at the drain of the MOS tube Q3 and damaging the MOS tube. Finally, the MCU of the special transformer acquisition terminal detects the change of the switch quantity.

[0048] The host computer consists of the host computer software. The host computer and the intelligent detection device are connected through the 5. communication module for communication. After the connection, the host computer software can remotely control and query the status of the intelligent detection device by binding variables, configuring message protocols, and establishing connections. By implanting script commands, the automatic test of the special transformer acquisition terminal can be remotely realized.

[0049] Communication modules such as Figure 5The communication module of the intelligent detection device for the special transformer acquisition terminal is responsible for the communication between the intelligent detection device and the host computer, including RS-485 wired communication and 4G wireless communication. On-site communication and remote communication can be selected according to the actual application scenario;

[0050] The control module is the core control unit of the entire device. Here, a 32-bit MCU is used to control the entire system, including input and output control, communication control, display control, etc.

[0051] The display module includes a touch LCD screen and a status indicator light. The touch LCD screen is used for display and touch operation, which is convenient for testing and viewing; the status indicator light is used to indicate the operating status, communication status, switch status, etc. of the detection device;

[0052] Pulse generation module, see Figure 6 .Note Figure 6 It is only a part of the pulse generation module, and the number of circuits can be increased according to actual needs. The pulse generation module consists of capacitors C5, C6, C7, resistors R8, R9, digital isolator UC2, MOS tube Q4, bidirectional TVS tube D3, thermistor PTC1, and pulse receiving terminal J4 of the dedicated transformer acquisition terminal. The connection relationship is as follows: Pin 2 of the digital isolator UC2 is connected to the left end of C5 and GND, Pin 1 of the digital isolator UC2 is connected to the right end of C5 and the power supply 3.3V, Pin 3 of the digital isolator UC2 is connected to the GPIO that generates the PWM wave of the MCU, Pin 8 of the digital isolator UC2 is connected to the left end of R8, Pin 9 of the digital isolator UC2 is connected to the isolation ground MGND and the right end of C6, Pin 10 of the digital isolator UC2 is connected to the isolation power supply 5V and the left end of C6, the right end of R8 is connected to the upper end of C7, the upper end of R9, and the gate of the MOS tube Q4, the lower end of C7 is connected to MGND, the lower end of R9, and the source of the MOS tube Q4, the drain of the MOS tube Q4 is connected to the lower end of the bidirectional TVS tube D3 and the left end of PTC1, the upper end of the bidirectional TVS tube D3 is connected to MGND, the right end of PTC1 is connected to Pin 1 of the pulse receiving terminal J4 of the special transformer acquisition terminal, and Pin 2 of J4 is connected to MGND.

[0053] like Figure 6The intelligent detection device for the special transformer acquisition terminal shown in the figure provides a pulse generation module for the special transformer acquisition terminal. The PWM wave generated by the MCU is isolated and output through the digital isolator to prevent the intelligent detection device from being affected during the experiment. The output of the digital isolator drives the MOS tube after passing through the current limiting resistor R8. The voltage between the pulse receiving terminal pins 1 and 2 of the special transformer acquisition terminal in the figure is 12V, so the output interface adopts open-drain output. Finally, the protection devices bidirectional TVS tube and thermistor are used to prevent EMC experiments from damaging the equipment. The pulse generation module can arbitrarily adjust the pulse frequency, pulse width, pulse interval, and number of pulses according to the pulse requirements of the special transformer acquisition terminal. Pulse adjustment is as follows: Figure 7 As shown in the figure, T0 is the pulse low level time, T1 is the pulse high level time, and T2 is the pulse interval time. The duty cycle of the pulse is set by adjusting T0 and T1, the pulse interval is set by adjusting T2, and the number of pulses is adjusted by adjusting N. The software execution process is as follows Figure 8 As shown. First, configure the various parameters of the timer and enable the timer interrupt. When pulse output is required, the duty cycle, frequency, and number of pulses can be customized as needed. For better use, the screen interface is converted into pulse width, period, and pulse number adjustment, and the output of the pulse can be interrupted (the adjustment range of the period is 2ms-131072ms). After setting the output pulse parameters, the MCU will enable the timer. When the number of pulses decreases to 0, the timer will be turned off and the pulse output will stop.

[0054] The pulse width detection module can detect the pulse width of the relay drive signal sent by the dedicated transformer acquisition terminal during the platform test to determine the cause of abnormal relay operation and prevent abnormal relay operation from causing electric shock hazards. The software execution process is as follows: Fig. 9 As shown, configure the timer parameters, set its mode to rising edge capture mode, enable the timer and its update interrupt. When you need to capture a pulse, turn on the pulse capture function through the serial port screen. The timer will obtain the rising edge time from the first rise to the first fall, and the falling edge time from the first fall to the second rise. The pulse width and frequency are calculated based on the rising edge time and falling edge time obtained. Set the detection range according to the detection pulse width requirement. You only need to determine whether the detected pulse width is within this range, and output the number of pulses within the range and the number of pulses and pulse width outside the range at the same time, and record which pulse it is.

[0055] The housing of the intelligent detection device for type III special transformer acquisition terminal is as follows Fig.10 shown.

[0056] The present invention is fully described for a clearer disclosure, and the prior art will not be listed one by one.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it; although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein with equivalents; it is obvious for those skilled in the art to combine multiple technical solutions of the utility model. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. An intelligent detection device for a dedicated transformer acquisition terminal, characterized in that: It comprises a power management module (1), a state quantity detection module (2), a switch quantity input module (3), a host computer (4), a communication module (5), a control module (6), and a display module (7); wherein: The input end of the control module (6) is electrically connected to the power management module (1), the state quantity detection module (2), and the switch quantity input module (3); The control module (6) is interactively connected to the display module (7) and the communication module (5); The power management module (1) is also electrically connected to the state quantity detection module (2), the switch quantity input module (3), the communication module (5) and the display module (7); The host computer (4) is electrically connected to the communication module (5).

2. The intelligent detection device for a dedicated transformer acquisition terminal according to claim 1 is characterized in that: The power management module (1) includes an AC-DC module, a DC-DC module, an LDO module, a lithium battery charge and discharge management module and a lithium battery; The AC-DC module is connected to the AC 220V and the output is connected to the DC-DC module; the DC-DC module is connected to the LDO module; the output of the LDO module is connected to the subsequent load; The lithium battery charge and discharge management module is electrically connected to the lithium battery and the DC-DC module respectively; The output end of the lithium battery charge and discharge management module is also connected to the LDO module and the subsequent load respectively.

3. The intelligent detection device for a dedicated transformer acquisition terminal according to claim 1 is characterized in that: The state quantity detection module (2) comprises resistors R1, R2, R3, R4, R5, R6, capacitors C1, C2, diode DA1, optical coupler UC1, transistor Q1, MOS tube Q2, indicator LED1, strong current terminal J1, special transformer acquisition terminal opening and closing access terminal J2; The left end of the resistor R3 is connected to the 1-pin L phase PL of the strong current terminal J1, and the right end of the resistor R3 is connected to the 1-pin FH_ZHA_L of the special transformer acquisition terminal separation and closing access terminal J2 and the left end of the resistor R4; the right end of the resistor R4 is respectively connected to the upper end of C1, the upper end of DA1, and the 1-pin of the optical coupler UC1; The left end of the resistor R5 is connected to the 2nd pin FH_ZHA_N of the special transformer acquisition terminal separation and closing access terminal J2 and the 2nd pin N-phase PN of the strong current terminal J1; the right end of the resistor R5 is respectively connected to the lower end of the capacitor C1, the lower end of DA1, and the 2nd pin of the optical coupler UC1; Pin 3 of the optocoupler UC1 is connected to the upper end of R6, the upper end of C2, and the base of the transistor Q1. Pin 4 of the optocoupler UC1 is connected to the upper end of the resistor R1 and the upper end of the resistor R2, and a power supply of 3.3V is connected. The collector of the transistor Q1 is connected to the lower end of the resistor R1, the GPIO pin of the MCU, and the gate of the MOS tube Q2. The upper end of the indicator light LED1 is connected to the lower end of the resistor R2, the lower end of the indicator light LED1 is connected to the drain of the transistor Q2, and the source of the transistor Q2 is connected to the emitter of the transistor Q1, the lower end of the capacitor C2, and the lower end of the resistor R6 are connected to GND.

4. The intelligent detection device for a dedicated transformer acquisition terminal according to claim 1 is characterized in that: The switch quantity input module (3) comprises a resistor R7, capacitors C3 and C4, a diode D2, a MOS tube Q3, a relay KR1, a button KT1, and a switch quantity input terminal J3 of a special transformer acquisition terminal; The right end of resistor R7 is connected to the IO pin of MCU, the left end of resistor R7 is connected to the gate of transistor Q3, the drain of transistor Q3 is connected to the upper end of button KT1, the upper end of capacitor C4, the lower end of diode D2, and the lower end 4 of relay KR1 coil, the source of transistor Q3 is connected to the lower end of button KT1 and the lower end of capacitor C4, the upper end of capacitor C3 is connected to the upper end of diode D2, and the upper end 5 of relay KR1 coil is connected to the power supply 5V, the normally open contact 3 of relay KR1 is connected to pin 1 YAOX01 of the switch input terminal J3 of the special transformer acquisition terminal, and the corresponding normally open contact of relay KR1 is connected to pin 2 MGND of the switch input terminal J3 of the special transformer acquisition terminal.

5. The intelligent detection device for a dedicated transformer acquisition terminal according to claim 1 is characterized in that: The host computer (4) is equipped with host computer software and is connected to the intelligent detection device via a communication module (5). Communication module (5), including RS-485 wired communication and 4G wireless communication; The display module (7) comprises a touch liquid crystal screen and a status indicator light; Control module, using 32-bit MCU.

6. The intelligent detection device for a dedicated transformer acquisition terminal according to claim 3 is characterized in that: The control module (6) is also electrically connected to a pulse generation module (8) and a pulse width detection module (9); The pulse generation module (8) includes capacitors C5, C6, C7, resistors R8, R9, a digital isolator UC2, a MOS tube Q4, a bidirectional TVS tube D3, a thermistor PTC1, and a pulse receiving terminal J4 of a dedicated transformer acquisition terminal; Pin 2 of the digital isolator UC2 is connected to the left end of the capacitor C5 and GND, pin 1 of the digital isolator UC2 is connected to the right end of the capacitor C5 and the power supply 3.3V respectively, pin 3 of the digital isolator UC2 is connected to the GPIO of the MCU to generate a PWM wave, pin 8 of the digital isolator UC2 is connected to the left end of the resistor R8, pin 9 of the digital isolator UC2 is connected to the isolation ground MGND and the right end of the capacitor C6, pin 10 of the digital isolator UC2 is connected to the isolation power supply 5V and the left end of the capacitor C6 respectively, the right end of the resistor R8 is connected to the upper end of the capacitor C7, the upper end of the resistor R9, and the gate of the MOS tube Q4, the lower end of the capacitor C7 is connected to MGND, the lower end of the resistor R9, and the source of the MOS tube Q4, the drain of the MOS tube Q4 is connected to the lower end of the bidirectional TVS tube D3 and the left end of PTC1, the upper end of the bidirectional TVS tube D3 is connected to MGND, the right end of the thermistor PTC1 is connected to pin 1 of the pulse receiving terminal J4 of the special transformer acquisition terminal, and pin 2 of the pulse receiving terminal J4 of the special transformer acquisition terminal is connected to MGND.

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