Nuclear power overspeed protection module detection device

Abstract

The utility model discloses a detection device for a nuclear power overspeed protection module. The detection device comprises an MCU module, and a power supply module, an LCD screen driving module, a PWM driving module and a button module which are all connected to the MCU module. The man-machine interaction carrier comprises an LCD screen, a plurality of keys, an aviation plug, an external interface and a power lamp; the LCD screen is fixed on the front surface of the man-machine interaction carrier, and the plurality of keys are arranged on the edge of the LCD screen and are respectively a power-on / power-off key, a page-up key, a page-down key, an increase key, a decrease key and a function key; a power lamp, an aviation plug and an external interface are arranged on one side face of the man-machine interaction carrier. According to the utility model, the MCU module can provide a control signal for the PWM driving module, so that the PWM driving module tests the overspeed protection module, and a report is automatically generated by inputting a test result. When the device is used for detecting the overspeed protection module, the workload of personnel is reduced, the requirement for the ability of testing personnel is lowered, the process is not prone to errors, the efficiency is high, and the testing cost is low.

Description

Technical Field

[0001] The utility model relates to a nuclear power overspeed protection module detection device, belonging to the technical field of nuclear power safety. Background Art

[0002] In the emergency diesel engines of nuclear power plants, the function of the mechanical overspeed protection device is to automatically shut down the diesel engine when the speed increases abnormally due to a fault, so that the diesel engine can return to a safe state and prevent equipment damage and casualties caused by overspeed.

[0003] At present, there are no clear and specific regulations on the calibration method and calibration device of the mechanical overspeed protection device, and the relevant diesel engine manufacturers do not have matching calibration devices. In order to ensure the safety performance of nuclear power emergency diesel engines and the nuclear safety level of the operating units, it is very necessary to conduct regular inspections based on the structure and operating characteristics of the nuclear power emergency diesel engines, which also leads to higher requirements on the ability of testers. However, manual inspection alone has a large workload and a heavy burden, and is prone to errors and has low efficiency. At the same time, emergency diesel engines are expensive and have high operating costs, which are not suitable for high-risk tests. Therefore, there is an urgent need for a nuclear power overspeed protection module detection device that can assist manual inspections for efficient detection. Utility Model Content

[0004] The technical problem to be solved by the utility model is that most of the existing nuclear power emergency diesel engines rely on manual inspection, which requires high ability of the testers, and manual inspection is prone to errors and inefficient. At the same time, emergency diesel engines are expensive and have high use costs, and are not suitable for high-risk tests.

[0005] In order to solve the above technical problems, the utility model provides a nuclear power overspeed protection module detection device, which can reduce the workload of detection personnel, reduce the ability requirements for test personnel, and the process is not prone to errors and has high efficiency.

[0006] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0007] A nuclear power overspeed protection module detection device, comprising: a power module, an LCD screen drive module, a PWM drive module, a key module, and an MCU module; the power module, the LCD screen drive module, the PWM drive module, and the key module are all connected to the MCU module;

[0008] The PWM driving module includes a first driving unit, a second driving unit, and a shutdown protection unit; the first driving unit includes a first driving optical coupler U20, the first driving optical coupler U20 is connected in parallel with a capacitor C13, the capacitor C13 is connected to a resistor R90 and a resistor R91 respectively, and the resistor R90 and the resistor R91 are both connected to the shutdown protection unit; the first driving optical coupler U20 is connected to a capacitor C90, and the capacitor C90 is grounded; the first driving optical coupler U20 is also connected to a resistor R17, and the resistor R17 is connected to a resistor R19, a capacitor C18, and a bidirectional TVS transient suppression diode Q2 arranged in parallel, and the resistor R19, the capacitor C18, and the bidirectional TVS transient suppression diode Q2 are all grounded;

[0009] The second driving unit includes a second driving optocoupler U21, the second driving optocoupler U21 is connected in parallel with a capacitor C24, the capacitor C24 is respectively connected to a resistor R92 and a resistor R93, the resistor R92 and the resistor R93 are both connected to the shutdown protection unit; the second driving optocoupler U21 is connected to a capacitor C91, and the capacitor C91 is grounded; the second driving optocoupler U21 is also connected to a resistor R26, the resistor R26 is connected to a resistor R27, a capacitor C92, and a bidirectional TVS transient suppression diode Q3 arranged in parallel, and the resistor R27, the capacitor C92, and the bidirectional TVS transient suppression diode Q3 are all grounded.

[0010] Preferably, the shutdown protection unit includes a shutdown protection chip U23, and the shutdown protection chip U23 is connected in parallel with a capacitor C45 and a capacitor C46, ​​the capacitor C45 and the capacitor C46 are both grounded, the capacitor C46 is connected to a resistor R37, the resistor R37 is connected to a resistor R32, and the resistor R37 is connected to the MCU module; the shutdown protection chip U23 is also respectively connected to a resistor R38, a resistor R39, a resistor R40, and a resistor R41, and the resistor R38, the resistor R39, the resistor R40, and the resistor R41 are all connected to the MCU module.

[0011] Furthermore, the MCU module includes an MCU chip U25 and an external register unit; the MCU chip U25 is connected to a resistor R96, the resistor R96 is connected to a diode Q4, and the diode Q4 is grounded; the MCU chip U25 is connected to a crystal oscillator X1, the crystal oscillator X1 is connected in parallel with a resistor R94, the resistor R94 is connected in parallel with a capacitor C103 and a capacitor C104, and the capacitor C103 and the capacitor C104 are both grounded; the MCU chip U25 is also connected to a resistor R95 and a capacitor C105 in parallel, and the resistor R95 and the capacitor C105 are both grounded; the MCU chip U25 is also connected to a resistor R96, the resistor R96 is connected to a capacitor C106, and the capacitor C106 is grounded.

[0012] Furthermore, the external register unit includes an external register U24, and capacitors C93, C94, C95, C96, C97, C98, C99, C100, C101, and C102 are all connected in parallel to the external register U24.

[0013] Furthermore, the power module includes a voltage overcurrent protection unit, a charging unit, and a power conversion unit; the voltage overcurrent protection unit includes a protection chip U2, the protection chip U2 is connected to a resistor R4, the resistor R4 is connected to a capacitor C1, and the capacitor C1 is grounded; the protection chip U2 is connected in parallel with a capacitor C3, the capacitor C3 is grounded, and the capacitor C3 is also connected to a resistor R6; the capacitor C3 is respectively connected to a resistor R5, a resistor R7, a resistor R8, and a resistor R10, the resistor R5 and the resistor R7 are both connected to a MOS tube P1B, the MOS tube P1B is respectively connected to a MOS tube P1A and a resistor R11, the resistor R8 and the resistor R10 are both connected to a MOS tube P1A, the MOS tube P1A is connected to a resistor R12, and the resistor R12 is connected to the resistor R11.

[0014] Furthermore, the resistor R12 is a current sampling resistor.

[0015] Furthermore, the charging unit includes a data transmission interface U26 and a management chip U1; the data transmission interface U26 is connected to a resistor R1 and a resistor R14, and the resistors R1 and R14 are both grounded; the data transmission interface U26 is also connected to an inductor L1 and a capacitor C5, and the capacitor C5 is grounded, the inductor L1 is connected to a diode D1, the diode D1 is connected to a capacitor C4 and the management chip U1, and the capacitor C4 is grounded; the management chip U1 is connected to a capacitor C2, and the capacitor C2 is grounded; the management chip U1 is also connected to an LED1 and a resistor R3, the LED1 is connected to a resistor R2, and the resistor R2 is connected to a resistor R3; the management chip U1 is also connected to a resistor R9, and the resistor R9 is grounded.

[0016] Furthermore, the LCD screen driving module includes a connector U27, and the connector U27 is respectively connected to a resistor R29 and a resistor R30, the resistor R29 is connected to a diode D4, the resistor R30 is connected to a diode D5, the diode D4 is connected to the diode D5, and the diode D4 and the diode D5 are both connected to the MCU chip.

[0017] Furthermore, it comprises: a human-machine interaction carrier; the power module, LCD screen drive module, PWM drive module, button module, and MCU module are all built into the human-machine interaction carrier, and are linked with the outside world through the human-machine interaction carrier;

[0018] The human-computer interaction carrier includes an LCD screen, a number of buttons, an aviation plug, an external interface, and a power light;

[0019] The LCD screen is fixed on the front of the human-computer interaction carrier, and a plurality of buttons are arranged on the edge of the LCD screen, which are respectively a power on / off button, an up page button, a down page button, an increase button, a decrease button, and a function button;

[0020] A power light, an aviation plug, and an external interface are arranged on one side of the human-computer interaction carrier.

[0021] Furthermore, the power module, LCD screen drive module, PWM drive module, button module, and MCU module are all arranged on the board and built into the human-computer interaction carrier.

[0022] The utility model provides a nuclear power overspeed protection module detection device, which has the following advantages:

[0023] In the utility model, the MCU module can give a control signal to the PWM drive module, so that the PWM drive module tests the overspeed protection module, and automatically generates a report by inputting the test result. When using this device to detect the overspeed protection module, the workload of the personnel is reduced, the ability requirements for the test personnel are reduced, the process is not prone to errors, the efficiency is high, and the test cost of the emergency diesel engine is reduced as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the human-computer interaction carrier of the utility model;

[0025] Figure 2 This is the installation structure diagram of the nuclear power overspeed protection module of the utility model;

[0026] Figure 3 This is the circuit structure diagram of the PWM drive module of the utility model;

[0027] Figure 4 This is the circuit structure diagram of the MCU module of the utility model;

[0028] Figure 5 This is a circuit diagram of a voltage overcurrent protection unit of the utility model;

[0029] Figure 6 This is a circuit diagram of the charging unit of the utility model;

[0030] Figure 7 This is the circuit structure diagram of the power conversion chip U4 of the utility model;

[0031] Figure 8 This is the circuit structure diagram of the power conversion chip U9 of the utility model;

[0032] Fig. 9 This is a circuit installation structure diagram of the power conversion chip U5, the power conversion chip U10 and the power conversion chip U12 of the utility model;

[0033] Fig.10 This is the circuit structure diagram of the LCD screen drive module of the utility model;

[0034] Fig.11 This is the circuit structure diagram of the key module of the utility model;

[0035] In the figure:

[0036] 1-power module; 2-LCD screen driver module; 3-PWM driver module; 4-button module; 41-second card slot; 5-MCU module; 6-human-computer interaction carrier; 61-LCD screen; 62-button; 63-aviation plug; 64-external interface; 65-power light. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the utility model.

[0038] Reference Figure 1-Figure 11 The present application provides a nuclear power overspeed protection module detection device, including a human-computer interaction carrier 6, a power module 1, an LCD screen driver module 2, a PWM driver module 3, a button module 4 and an MCU module 5. The power module 1, the LCD screen driver module 2, the PWM driver module 3, the button module 4 and the MCU module 5 are all installed on a board and built into the human-computer interaction carrier 6. The installation of each module and the board is the existing technology and will not be described in detail. It is not shown in the figure and is linked with the outside world through the human-computer interaction carrier 6. The power module 1, the LCD screen driver module 2, the PWM driver module 3 and the button module 4 are all connected to the MCU module 5.

[0039] Furthermore, the human-computer interaction carrier 6 includes an LCD screen 61, several buttons 62, an aviation plug 63, an external interface 64, and a power light 65; the LCD screen 61 is fixed on the front of the human-computer interaction carrier 6, and several buttons 62 are installed on the edge of the LCD screen 61, namely, an on / off button, an up page key, a down page key, an increase key, a decrease key, and a function key; a power light 65, an aviation plug 63 and an external interface 64 are installed on one side of the human-computer interaction carrier 6. In this embodiment, the installation of the various components of the human-computer interaction carrier 6 is all existing technology and will not be elaborated on.

[0040] Reference Figure 2 and Figure 3In a further embodiment, the PWM driving module 3 includes a first driving unit, a second driving unit and a shutdown protection unit. The first driving unit includes a first driving optical coupler U20. The first driving optical coupler U20 is connected in parallel with a capacitor C13. The capacitor C13 is connected to a resistor R90 and a resistor R91 respectively. The resistor R90 and the resistor R91 are both connected to the shutdown protection unit 33. The first driving optical coupler U20 is connected to a capacitor C90, and the capacitor C90 is grounded. The first driving optical coupler U20 is also connected to a resistor R17, and the resistor R17 is connected in parallel with the capacitor C13. The resistor R19, capacitor C18 and bidirectional TVS transient suppression diode Q2 are connected in series, which has a good filtering effect. The resistor R19, capacitor C18 and bidirectional TVS transient suppression diode Q2 are all grounded. When the two ends of the TVS diode are subjected to a momentary high-energy impact, it changes the impedance value between the two ends from high impedance to low impedance at a speed of PS seconds to absorb a momentary large current and clamp the voltage at its two ends to a predetermined value, thereby protecting the subsequent precision components from the impact of transient high-voltage spike pulses.

[0041] The second driving unit includes a second driving optocoupler U21, and the second driving optocoupler U21 is connected in parallel with a capacitor C24, and the capacitor C24 is respectively connected to the resistor R92 and the resistor R93, and the resistor R92 and the resistor R93 are both connected to the shutdown protection unit 33; the second driving optocoupler U21 is connected to the capacitor C91, and the capacitor C91 is grounded; the second driving optocoupler U21 is also connected to the resistor R26, and the resistor R26 is connected to the resistor R27, the capacitor C92, and the bidirectional TVS transient suppression diode Q3 arranged in parallel, and has a good filtering effect. The resistor R27, the capacitor C92, and the bidirectional TVS transient suppression diode Q3 are all grounded.

[0042] Reference Figure 2 and Figure 3 In a further embodiment, the shutdown protection unit includes a shutdown protection chip U23, the shutdown protection chip U23 model is SN74ACT244PWR, and the SN74ACT244PWR is an octal buffer / driver designed to improve the performance and density of tri-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The SN74ACT244 device is organized as two 4-bit buffers / drivers with separate output enable (OE) inputs. When (OE) is low, the device passes non-inverting data from the A input to the Y output. When (OE) is high, the output is in a high-impedance state. To ensure a high-impedance state during power-on or power-off, (OE) should be connected to VCC through a pull-up resistor, and the minimum value of the resistor depends on the current absorption capability of the driver.

[0043] Furthermore, the shutdown protection chip U23 is connected in parallel with capacitor C45 and capacitor C46, ​​both capacitor C45 and capacitor C46 are grounded, capacitor C46 is connected to resistor R37, resistor R37 is connected to resistor R32, and resistor R37 is connected to MCU module 5; the shutdown protection chip U23 is also connected to resistor R38, resistor R39, resistor R40, and resistor R41 respectively, and resistor R38, resistor R39, resistor R40, and resistor R41 are all connected to MCU module 5, and then SN74ACT244PWR is used to convert the 3V PWM signal output by the MCU into a 5V signal, thereby increasing the driving capability, and enabling and shutting down the PWM signal is achieved through the OE pin.

[0044] Reference Figure 2 and Figure 4 In a further embodiment, the MCU module 5 includes an MCU chip U25 and an external register unit. The MCU chip U25 uses STM32F407VET6, 100Pin package. The core component of STM32F407VET6 is the ARM Cortex-M4 core, which has the characteristics of high performance and low power consumption. The Cortex-M4 core adopts the Thumb-2 instruction set, supports 16-bit and 32-bit instructions, and has high computing power and code density. In addition, the Cortex-M4 core also has functions such as floating point unit (FPU), digital signal processing (DSP) and memory protection, which can meet the needs of various embedded applications. The MCU chip U25 is connected to resistor R96, resistor R96 is connected to diode Q4, and diode Q4 is grounded; the MCU chip U25 is connected to crystal oscillator X1, crystal oscillator X1 is connected in parallel with resistor R94, resistor R94 is connected in parallel with capacitor C103 and capacitor C104, capacitor C103 and capacitor C104 are both grounded; the MCU chip U25 is also connected to resistor R95 and capacitor C105 in parallel, resistor R95 and capacitor C105 are both grounded; the MCU chip U25 is also connected to resistor R96, resistor R96 is connected to capacitor C106, and capacitor C106 is grounded.

[0045] Furthermore, the external register unit includes an external register U24, and the external register U24 is connected in parallel with capacitors C93, C94, C95, C96, C97, C98, C99, C100, C101 and C102. The circuit is prone to parasitic interference, and multiple capacitors are connected in parallel to filter out interference in each frequency band.

[0046] Reference Figure 5-Figure 9In a further embodiment, the power module 1 further includes a voltage overcurrent protection unit, a charging unit, and a power conversion unit; the voltage overcurrent protection unit can be composed of two 18659 lithium batteries connected in series, a battery interface CN1 is set on the two lithium batteries, B+ is connected to the positive electrode of the second battery, B- is connected to the negative electrode of the first battery, B1 is the connection point between the positive electrode of the first battery and the negative electrode of the second battery, a temperature sensor NTC is buried in the battery insulation skin for battery temperature detection, and an NTC temperature sampling line connector CN2 is set on the two lithium batteries; VC1 and VC2 are set on the two lithium batteries for two battery voltage detection, a single battery cell is lower than 2.5V, it is judged as over-discharge undervoltage protection, a single battery cell is higher than 4.2V, it is judged as over-charge overvoltage protection, and the battery voltage is higher than 3V or lower than 4.0V recovery protection; RTS and RTV are set on the two lithium batteries for battery temperature detection, and the temperature exceeding 80°C is judged as battery charge and discharge overtemperature protection.

[0047] Furthermore, the voltage overcurrent protection unit also includes a protection chip U2, which is connected to a resistor R4, which is connected to a capacitor C1, and the capacitor C1 is grounded; the protection chip U2 is connected in parallel with a capacitor C3, which is grounded, and is also connected to a resistor R6; the capacitor C3 is respectively connected to resistors R5, R7, R8, and R10, and the resistors R5 and R7 are both connected to a MOS tube P1B, and the MOS tube P1B is respectively connected to a MOS tube P1A and a resistor R11, and the resistors R8 and R10 are both connected to a MOS tube P1A, and the MOS tube P1A is connected to a resistor R12, and the resistor R12 is connected to the resistor R11.

[0048] Furthermore, CO and DO are set on the two lithium batteries as the charge and discharge MOS control introduction, and the high level turns on the MOS tubes of P1A and P1B; the low level turns off the MOS tubes of P1A and P1B; during over-discharge and over-charge protection and over-temperature protection, CO and DO output low levels, turn off the MOS, disconnect the power circuit, and protect the battery and the board; after the protection is restored, CO and DO output high levels, restore the power circuit, and resume work.

[0049] Furthermore, a current sampling VIN is set on the two lithium batteries, and R12 is a current sampling resistor. When the current exceeds 2A, VIN recognizes overcurrent, shuts down MOS, disconnects the power circuit, and protects the battery and the board. After the protection is restored, CO and DO output high levels, restore the power circuit, and resume work.

[0050] Reference Figure 6-Figure 9In a further embodiment, the charging unit includes a data transmission interface U26 and a management chip U1. U1 can be two 18650 charging management chips with a chip model of CS5090E; the data transmission interface U26 is connected to a resistor R1 and a resistor R14, and both the resistor R1 and the resistor R14 are grounded; the data transmission interface U26 is also connected to an inductor L1 and a capacitor C5, and the capacitor C5 is grounded, the inductor L1 is connected to a diode D1, and the diode D1 is connected to a capacitor C4 and the management chip U1, and the capacitor C4 is grounded; the management chip U1 is connected to a capacitor C2, and the capacitor C2 is grounded; the management chip U1 is also connected to an LED1 and a resistor R3, and the LED1 is connected to a resistor R2, and the resistor R2 is connected to a resistor R3; the management chip U1 is also connected to a resistor R9, and the resistor R9 is grounded, so as to realize boost charging of two 18650 lithium batteries connected in series.

[0051] Furthermore, the power conversion unit includes power conversion chip U4, power conversion chip U9, power conversion chip U5, power conversion chip U10 and power conversion chip U12. The power conversion chip U4 is of model SGM61410, which steps down the 5-8.4V voltage of the battery into 5V through SGM61410, with a maximum output current of 600mA; the power conversion chip U9 is of model LM1117RS-3.3, which steps down the 5V voltage of the +5V network into 3.3V through LM1117RS-3.3, and supplies it to the MCU module 5; the power conversion chips U5, U10 and U12 are all of model B0524S-1WR3, with an output voltage of 24Vdc, and the two isolated 24V of the power networks 24VIO_1 and 24VIO_2 of U5 and U10 are respectively supplied to two PWM output circuits, and the power network 24V of U12 is used to drive the LCD screen 61.

[0052] Reference Fig.10 In a further embodiment, the LCD screen driving module 2 includes a connector U27, the connector U27 is respectively connected to the resistor R29 and the resistor R30, the resistor R29 is connected to the diode D4, the resistor R30 is connected to the diode D5, the diode D4 is connected to the diode D5, the diode D4 and the diode D5 are both connected to the MCU chip, the connector U27 connects the LCD screen 61 and the board, the MCU communicates with the LCD screen 61 through the serial ports U1RXB and U1TXB, and drives the LCD screen 61 to work.

[0053] The above is only a preferred embodiment of the utility model, and is not any formal or substantial limitation of the utility model. It should be pointed out that ordinary technicians in this technical field can make some improvements and supplements without departing from the utility model, and these improvements and supplements should also be regarded as the protection scope of the utility model. Any technician familiar with this profession can make some changes, modifications and equivalent changes made by using the technical content disclosed above without departing from the spirit and scope of the utility model, which are all equivalent embodiments of the utility model; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the essential technology of the utility model are still within the scope of the technical solution of the utility model.

Claims

1. A nuclear power overspeed protection module detection device, characterized in that: include: A power module, an LCD screen driving module, a PWM driving module, a key module, and an MCU module; the power module, the LCD screen driving module, the PWM driving module, and the key module are all connected to the MCU module; the PWM driving module includes a first driving unit, a second driving unit, and a shutdown protection unit; the first driving unit includes a first driving optical coupler U20, the first driving optical coupler U20 is connected in parallel with a capacitor C13, the capacitor C13 is connected to a resistor R90 and a resistor R91 respectively, and the resistor R90 and the resistor R91 are both connected to the shutdown protection unit; the first driving optical coupler U20 is connected with a capacitor C90, and the capacitor C90 is grounded; the first driving optical coupler U20 is also connected to a resistor R17, and the resistor R17 is connected to a resistor R19, a capacitor C18, and a bidirectional TVS transient suppression diode Q2 arranged in parallel, and the resistor R19, the capacitor C18, and the bidirectional TVS transient suppression diode Q2 are all grounded; The second driving unit includes a second driving optocoupler U21, the second driving optocoupler U21 is connected in parallel with a capacitor C24, the capacitor C24 is respectively connected to a resistor R92 and a resistor R93, the resistor R92 and the resistor R93 are both connected to the shutdown protection unit; the second driving optocoupler U21 is connected to a capacitor C91, and the capacitor C91 is grounded; the second driving optocoupler U21 is also connected to a resistor R26, the resistor R26 is connected to a resistor R27, a capacitor C92, and a bidirectional TVS transient suppression diode Q3 arranged in parallel, and the resistor R27, the capacitor C92, and the bidirectional TVS transient suppression diode Q3 are all grounded.

2. The nuclear power overspeed protection module detection device according to claim 1, characterized in that: The shutdown protection unit includes a shutdown protection chip U23, and the shutdown protection chip U23 is connected in parallel with a capacitor C45 and a capacitor C46, ​​the capacitor C45 and the capacitor C46 are both grounded, the capacitor C46 is connected to a resistor R37, the resistor R37 is connected to a resistor R32, and the resistor R37 is connected to the MCU module; the shutdown protection chip U23 is also connected to a resistor R38, a resistor R39, a resistor R40, and a resistor R41, respectively, and the resistor R38, the resistor R39, the resistor R40, and the resistor R41 are all connected to the MCU module.

3. The nuclear power overspeed protection module detection device according to claim 2, characterized in that: The MCU module includes an MCU chip U25 and an external register unit; the MCU chip U25 is connected to a resistor R96, the resistor R96 is connected to a diode Q4, and the diode Q4 is grounded; the MCU chip U25 is connected to a crystal oscillator X1, the crystal oscillator X1 is connected in parallel with a resistor R94, the resistor R94 is connected in parallel with capacitors C103 and C104, and both the capacitors C103 and C104 are grounded; the MCU chip U25 is also connected to a resistor R95 and a capacitor C105 in parallel, and both the resistor R95 and the capacitor C105 are grounded; the MCU chip U25 is also connected to a resistor R96, the resistor R96 is connected to a capacitor C106, and the capacitor C106 is grounded.

4. The nuclear power overspeed protection module detection device according to claim 3, characterized in that: The external register unit includes an external register U24, and capacitors C93, C94, C95, C96, C97, C98, C99, C100, C101, and C102 are all connected in parallel to the external register U24.

5. The nuclear power overspeed protection module detection device according to claim 4, characterized in that: The power module includes a voltage overcurrent protection unit, a charging unit, and a power conversion unit; The voltage overcurrent protection unit includes a protection chip U2, which is connected to a resistor R4, which is connected to a capacitor C1, which is grounded; the protection chip U2 is connected in parallel with a capacitor C3, which is grounded and further connected to a resistor R6; the capacitor C3 is respectively connected to resistors R5, R7, R8 and R10, the resistors R5 and R7 are both connected to a MOS tube P1B, the MOS tube P1B is respectively connected to a MOS tube P1A and a resistor R11, the resistor R8 and R10 are both connected to a MOS tube P1A, the MOS tube P1A is connected to a resistor R12, and the resistor R12 is connected to the resistor R11.

6. The nuclear power overspeed protection module detection device according to claim 5, characterized in that: The resistor R12 is a current sampling resistor.

7. The nuclear power overspeed protection module detection device according to claim 5, characterized in that: The charging unit includes a data transmission interface U26 and a management chip U1; the data transmission interface U26 is connected to a resistor R1 and a resistor R14, and the resistors R1 and R14 are both grounded; the data transmission interface U26 is also connected to an inductor L1 and a capacitor C5, and the capacitor C5 is grounded, the inductor L1 is connected to a diode D1, the diode D1 is connected to a capacitor C4 and the management chip U1, and the capacitor C4 is grounded; the management chip U1 is connected to a capacitor C2, and the capacitor C2 is grounded; the management chip U1 is also connected to an LED1 and a resistor R3, the LED1 is connected to a resistor R2, and the resistor R2 is connected to a resistor R3; the management chip U1 is also connected to a resistor R9, and the resistor R9 is grounded.

8. The nuclear power overspeed protection module detection device according to claim 7, characterized in that: The LCD screen driving module includes a connector U27, and the connector U27 is connected to a resistor R29 and a resistor R30 respectively. The resistor R29 is connected to a diode D4, the resistor R30 is connected to a diode D5, the diode D4 is connected to the diode D5, and the diode D4 and the diode D5 are both connected to the MCU chip.

9. The nuclear power overspeed protection module detection device according to claim 8, characterized in that: include: Human-computer interaction carrier; the power module, LCD screen drive module, PWM drive module, button module, and MCU module are all built into the human-computer interaction carrier, and are linked with the outside world through the human-computer interaction carrier; The human-computer interaction carrier includes an LCD screen, a plurality of buttons, an aviation plug, an external interface, and a power light; the LCD screen is fixed on the front of the human-computer interaction carrier, and a plurality of buttons are arranged on the edge of the LCD screen, which are respectively a power on / off button, a page up button, a page down button, an increase button, a decrease button, and a function key; A power light, an aviation plug, and an external interface are arranged on one side of the human-computer interaction carrier.

10. The nuclear power overspeed protection module detection device according to claim 9, characterized in that: The power module, LCD screen drive module, PWM drive module, key module and MCU module are all arranged on the board and built into the human-computer interaction carrier.

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