Nuclear power KRTN16 channel in-place processor hardware integrated system and hot switching method

Abstract

The application discloses a nuclear power KRTN16 channel in-situ processor hardware integrated system and a hot switching method, which comprises a total power supply, a main power supply, a backup power supply, a normal channel switch, a backup channel switch, a switching execution unit, a switching control unit, a mainboard card and a backup board card. The total power supply is connected with the input end of the normal channel switch and the input end of the backup channel switch. The main power supply is connected with the output end of the normal channel switch and the input end of the mainboard card. The control signal output end of the mainboard card and the control signal output end of the backup board card are connected with the input end of the switching control unit. The output end of the switching control unit is connected with the input end of the switching execution unit. The output end of the switching execution unit is connected with the execution signal input end of the normal channel switch and the execution signal input end of the backup channel switch. The output end of the backup channel switch is connected with the input end of the backup board card through the backup power supply. The application can realize hot switching quickly.

Description

Technical Field

[0001] This invention relates to the field of nuclear power plant local processor technology, specifically to a nuclear power plant KRTN16 channel local processor hardware integration system and hot-switching method. Background Technology

[0002] Traditional nuclear power KRT N16 channel equipment, designed with on-site processor hardware boards featuring hot-switching technology, typically uses electromagnetic relays for hot-switching. This method suffers from issues such as electromagnetic coil heating, high power consumption, significant external electromagnetic radiation, millisecond-level switching time for electromagnetic relays (which is relatively long), large size, and poor vibration resistance, making it unsuitable for the practical application scenarios of long-term vibration in nuclear industry instruments and equipment. Summary of the Invention

[0003] The purpose of this invention is to provide a hardware integration system and hot-switching method for the local processor of the KRTN16 channel in nuclear power plants, which features low heat generation and power consumption, low electromagnetic radiation, short switching time, strong resistance to vibration stress, and the ability to achieve hot switching, thereby ensuring the stable and reliable operation of the equipment.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0005] This invention provides a hardware integration system for a local processor in a nuclear power plant's KRT N16 channel, the system comprising:

[0006] The system includes a main power supply, a backup power supply, a normal channel switch, a backup channel switch, a switching execution unit, a switching control unit, a motherboard card, and a backup board. The main power supply is connected to the input terminals of the normal channel switch, the backup channel switch, the switching execution unit, and the switching control unit. The main power supply is connected to the output terminal of the normal channel switch and the input terminal of the motherboard card. The control signal output terminals of the motherboard card and the backup board are connected to the input terminal of the switching control unit. The output terminal of the switching control unit is connected to the input terminal of the switching execution unit. The output terminal of the switching execution unit is connected to the execution signal input terminals of the normal channel switch and the backup channel switch. The output terminal of the backup channel switch is connected to the input terminal of the backup board through the backup power supply.

[0007] Alternatively, the normal channel switch includes resistor R2, resistor R3, field-effect transistor Q2, light-emitting diode D2, Zener diode D4, capacitor C2, and capacitor C4;

[0008] One end of resistor R2, one end of capacitor C2, and the source of MOSFET Q2 are simultaneously connected to serve as the input terminal of the normal channel switch and connected to the main power supply. The other end of resistor R2, the other end of capacitor C2, and the gate of MOSFET Q2 are simultaneously connected to the negative terminal of Zener diode D4. The positive terminal of Zener diode D4 serves as the execution signal input terminal of the normal channel switch and is connected to the switching execution unit. The drain of MOSFET Q2, the positive terminal of capacitor C4, and one end of resistor R3 are simultaneously connected to serve as the output terminal of the normal channel switch and connected to the main power supply. The other end of resistor R3 is connected to the positive terminal of LED D2. The negative terminals of LED D2 and capacitor C4 are simultaneously grounded.

[0009] Optionally, the backup channel switch includes resistor R1, resistor R4, field-effect transistor Q1, capacitor C1, capacitor C3, light-emitting diode D1, and Zener diode D3;

[0010] One end of resistor R4, one end of capacitor C1, and the source of field-effect transistor Q1 are simultaneously connected to serve as the input terminal of the backup channel switch and connected to the main power supply. The other end of resistor R4, the other end of capacitor C1, and the gate of field-effect transistor Q1 are simultaneously connected to the negative terminal of Zener diode D3. The positive terminal of Zener diode D3 serves as the execution signal input terminal of the backup channel switch and is connected to the switching execution unit. The drain of field-effect transistor Q1, the positive terminal of capacitor C3, and one end of resistor R1 are simultaneously connected to serve as the output terminal of the backup channel switch and connected to the backup power supply. The other end of resistor R1 is connected to the positive terminal of light-emitting diode D1. The negative terminals of light-emitting diode D1 and capacitor C3 are simultaneously grounded.

[0011] Alternatively, in the switching execution unit, the emitter of transistor Q3, one end of resistor R5, one end of resistor R6, the cathode of diode D5, the cathode of diode D6, one end of resistor R7, one end of resistor R8, and the emitter of transistor Q4 are simultaneously connected as the power input terminal of the switching execution unit, connected to the main power supply. The other end of resistor R5, the other end of resistor R9, one end of capacitor C5, one end of capacitor C7, one end of capacitor C9, and the drain of field-effect transistor Q5 are simultaneously connected as the power input terminal of the switching execution unit, connected to the main power supply. The first output terminal of the switching execution unit is connected to the execution signal input terminal of the backup channel switch. The other ends of resistor R6, capacitor C5, capacitor C7, capacitor C9, the anode of diode D5, the cathode of diode D8, the drain of MOSFET Q7, grounding capacitor C11, grounding resistor R14, and the gate of MOSFET Q6 are simultaneously connected. The anode of diode D6, the other end of resistor R7, one end of capacitor C6, one end of capacitor C8, one end of capacitor C10, the cathode of diode D7, the drain of MOSFET Q8, grounding capacitor C12, grounding resistor R13, and the gate of MOSFET Q5 are simultaneously connected. The other end of resistor R9 is connected to the base of transistor Q3. The other ends of capacitor C6, capacitor C8, capacitor C10, the drain of MOSFET Q6, the other end of resistor R8, and one end of resistor R10 are simultaneously connected to serve as the second output terminal of the switching execution unit and the execution signal input terminal of the main channel switch. The signal input terminal is connected, the other end of the resistor R10 is connected to the base of the transistor Q4, the collector of the transistor Q3 is connected to the ground resistor R11, the collector of the transistor Q4 is connected to the ground resistor R12, the source of the field-effect transistor Q5, the source of the field-effect transistor Q6, the cathode of the Zener diode D9, and the cathode of the Zener diode D10 are all grounded, the anode of the Zener diode D9 is connected to the anode of the diode D7, and the anode of the Zener diode D10 is connected to the anode of the diode D8;

[0012] The gate of the field-effect transistor Q8, the grounding resistor R19, the grounding capacitor C13, one end of the resistor R17, and the drain of the field-effect transistor Q12 are all connected together. The source of the field-effect transistor Q8 is grounded. The other end of the resistor R17 is connected to one end of the resistor R18. The other end of the resistor R18 is also connected to the grounding capacitor C14, the grounding resistor R20, the gate of the field-effect transistor Q7, and the drain of the field-effect transistor Q13. The source of the field-effect transistor Q12 is grounded, and its gate is connected to both the grounding resistor R25 and the grounding capacitor C17. The source of the field-effect transistor Q13 is grounded, and its gate is connected to both the grounding resistor R2 and the grounding capacitor C18.

[0013] Optionally, in the switching control unit, one end of resistor R15, one end of resistor R16, the collector of transistor Q9, and the collector of transistor Q10 are simultaneously connected to serve as the power input terminal of the switching control unit, connected to the main power supply. The other end of resistor R15, the other end of resistor R16, the base of transistor Q9, and the base of transistor Q11 are simultaneously connected to serve as the input terminal of the switching control unit, simultaneously connected to the control signal output terminal of the motherboard and the control signal output terminal of the backup board. The emitter of transistor Q9, the emitter of transistor Q11, and one end of resistor R21 are simultaneously connected... The other end of resistor R21 is connected to one end of capacitor C15. The other end of capacitor C15 is simultaneously connected to the anode of diode D11 and the cathode of diode D12. The cathode of diode D11, grounding capacitor C16, grounding resistor R23, and the base of transistor Q10 are simultaneously connected. The anode of diode D12 is grounded. The emitter of transistor Q10, grounding resistor R24, and one end of resistor R22 are simultaneously connected to serve as the output terminal of the switching control unit and connected to the switching execution unit. The other end of resistor R22 is connected to the anode of LED D13, and the cathode of LED D13 is grounded.

[0014] Optionally, the switching execution unit has a first execution state and a second execution state. In the first execution state, the main power supply is powered on, the normal channel switch is turned on to supply power to the motherboard, and the motherboard continuously outputs a first control signal to trigger the switching control unit to output a continuous DC signal, so that the switching execution unit keeps the normal channel switch on and the motherboard is continuously powered on and operates normally.

[0015] In the second execution state, the motherboard stops outputting control signals, the switching execution unit automatically turns off the normal channel switch and turns on the backup channel switch to supply power to the backup board, and the backup board continuously outputs the second control signal to trigger the switching control unit to output a continuous DC signal, so that the switching execution unit keeps the backup channel switch on and the backup board continues to be powered and operates normally.

[0016] This invention also provides a hot-switching method based on the above-mentioned nuclear power KRTN16 channel local processor hardware integration system, the hot-switching method comprising:

[0017] S1: Supply power to the main power source;

[0018] S2: Control the execution switching unit to open the normal channel switch to supply power to the motherboard card;

[0019] S3: Determine whether the motherboard card is working properly. If yes, proceed to step S4; otherwise, proceed to step S6.

[0020] S4: Control the motherboard card to continuously output the first control signal;

[0021] S5: The switching control unit is triggered to output a continuous DC signal according to the first control signal, so that the switching execution unit keeps the normal channel switch on and the motherboard is continuously powered.

[0022] S6: Control the execution switching unit to turn on the backup channel switch to supply power to the backup board;

[0023] S7: Control the backup board to continuously output the second control signal;

[0024] S8: The switching control unit is triggered to output a continuous DC signal according to the second control signal, so that the switching execution unit keeps the backup channel switch on and the backup board is continuously powered.

[0025] S9: Determine whether the backup board is working properly. If yes, repeat steps S6-S8; otherwise, return to step S2.

[0026] The present invention has the following beneficial effects:

[0027] This invention enables the switching execution unit to open the normal channel switch by default when the main power supply is on, so that the motherboard card is powered on and working. When the motherboard card fails or loses power, the switching execution unit opens the backup channel switch, so that the backup board card is powered on and working, realizing automatic hot switching of critical function redundant boards. This nuclear power KRT N16 channel local processor hardware integration system has advantages such as small size, low heat generation and power consumption, low electromagnetic interference radiation, good vibration resistance, and fast hot switching speed. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the hardware integration system of the nuclear power KRT N16 channel local processor of the present invention;

[0029] Figure 2 This is a circuit connection diagram of the normal channel switch, backup channel switch, and switching execution unit of the nuclear power KRT N16 channel local processor hardware integration system of the present invention.

[0030] Figure 3 This is a circuit diagram of the switching control unit of the local processor hardware integration system for the KRT N16 channel of nuclear power plant according to the present invention. Detailed Implementation

[0031] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0032] This invention provides a hardware integration system for a nuclear power plant KRTN16 channel local processor, with reference to... Figure 1 As shown, the nuclear power plant KRT N16 channel local processor hardware integration system includes:

[0033] The system includes a main power supply, a backup power supply, a normal channel switch, a backup channel switch, a switching execution unit, a switching control unit, a motherboard card, and a backup board. The main power supply is connected to the input terminals of the normal channel switch, the backup channel switch, the switching execution unit, and the switching control unit. The main power supply is connected to the output terminal of the normal channel switch and the input terminal of the motherboard card. The control signal output terminals of the motherboard card and the backup board are connected to the input terminal of the switching control unit. The output terminal of the switching control unit is connected to the input terminal of the switching execution unit. The output terminal of the switching execution unit is connected to the execution signal input terminals of the normal channel switch and the backup channel switch. The output terminal of the backup channel switch is connected to the input terminal of the backup board through the backup power supply.

[0034] Specifically, after the main power supply is turned on, the switching execution unit defaults to turning on the normal channel switch to supply power to the motherboard card in the normal channel. If the motherboard card is working normally, the motherboard card continuously outputs a control signal PWM wave, which triggers the switching control unit to output a continuous 3-12V DC signal, so that the switching execution unit keeps the normal channel switch on, so that the motherboard card continues to be powered on and operates normally.

[0035] When the motherboard malfunctions or loses power, it stops outputting the control signal PWM wave. After the switching execution unit exceeds the hold time, it automatically turns off the normal channel switch and turns on the backup channel switch to power the backup board. The backup board then performs the same actions as the motherboard until it malfunctions or loses power. At this point, the switching execution unit automatically turns on the normal channel switch again, allowing the motherboard to regain power, and the above operation is repeated.

[0036] Optionally, refer to Figure 2 As shown, the normal channel switch includes resistor R2, resistor R3, field-effect transistor Q2, light-emitting diode D2, Zener diode D4, capacitor C2, and capacitor C4;

[0037] One end of resistor R2, one end of capacitor C2, and the source of MOSFET Q2 are simultaneously connected to serve as the input terminal of the normal channel switch and connected to the main power supply. The other end of resistor R2, the other end of capacitor C2, and the gate of MOSFET Q2 are simultaneously connected to the negative terminal of Zener diode D4. The positive terminal of Zener diode D4 serves as the execution signal input terminal of the normal channel switch and is connected to the switching execution unit. The drain of MOSFET Q2, the positive terminal of capacitor C4, and one end of resistor R3 are simultaneously connected to serve as the output terminal of the normal channel switch and connected to the main power supply. The other end of resistor R3 is connected to the positive terminal of LED D2. The negative terminals of LED D2 and capacitor C4 are simultaneously grounded.

[0038] Optionally, refer to Figure 2 As shown, the backup channel switch includes resistor R1, resistor R4, field-effect transistor Q1, capacitor C1, capacitor C3, light-emitting diode D1, and Zener diode D3;

[0039] One end of resistor R4, one end of capacitor C1, and the source of field-effect transistor Q1 are simultaneously connected to serve as the input terminal of the backup channel switch and connected to the main power supply. The other end of resistor R4, the other end of capacitor C1, and the gate of field-effect transistor Q1 are simultaneously connected to the negative terminal of Zener diode D3. The positive terminal of Zener diode D3 serves as the execution signal input terminal of the backup channel switch and is connected to the switching execution unit. The drain of field-effect transistor Q1, the positive terminal of capacitor C3, and one end of resistor R1 are simultaneously connected to serve as the output terminal of the backup channel switch and connected to the backup power supply. The other end of resistor R1 is connected to the positive terminal of light-emitting diode D1. The negative terminals of light-emitting diode D1 and capacitor C3 are simultaneously grounded.

[0040] Optionally, refer to Figure 2As shown, in the switching execution unit, the emitter of transistor Q3, one end of resistor R5, one end of resistor R6, the cathode of diode D5, the cathode of diode D6, one end of resistor R7, one end of resistor R8, and the emitter of transistor Q4 are simultaneously connected to serve as the power input terminal of the switching execution unit, which is connected to the main power supply. The other end of resistor R5, the other end of resistor R9, one end of capacitor C5, one end of capacitor C7, one end of capacitor C9, and the drain of field-effect transistor Q5 are simultaneously connected to serve as the switching... The first output terminal of the switching execution unit is connected to the execution signal input terminal of the backup channel switch. The other ends of resistor R6, capacitor C5, capacitor C7, capacitor C9, the anode of diode D5, the cathode of diode D8, the drain of MOSFET Q7, grounding capacitor C11, grounding resistor R14, and the gate of MOSFET Q6 are simultaneously connected. The anode of diode D6, the other end of resistor R7, one end of capacitor C6, one end of capacitor C8, one end of capacitor C10, the cathode of diode D7, the drain of MOSFET Q8, grounding capacitor C12, grounding resistor R13, and the gate of MOSFET Q5 are simultaneously connected. The other end of resistor R9 is connected to the base of transistor Q3. The other ends of capacitor C6, capacitor C8, capacitor C10, the drain of MOSFET Q6, the other end of resistor R8, and one end of resistor R10 are simultaneously connected to serve as the second output terminal of the switching execution unit and the execution signal input terminal of the main channel switch. The signal input terminal is connected, the other end of the resistor R10 is connected to the base of the transistor Q4, the collector of the transistor Q3 is connected to the ground resistor R11, the collector of the transistor Q4 is connected to the ground resistor R12, the source of the field-effect transistor Q5, the source of the field-effect transistor Q6, the cathode of the Zener diode D9, and the cathode of the Zener diode D10 are all grounded, the anode of the Zener diode D9 is connected to the anode of the diode D7, and the anode of the Zener diode D10 is connected to the anode of the diode D8;

[0041] The gate of the field-effect transistor Q8, the grounding resistor R19, the grounding capacitor C13, one end of the resistor R17, and the drain of the field-effect transistor Q12 are all connected together. The source of the field-effect transistor Q8 is grounded. The other end of the resistor R17 is connected to one end of the resistor R18. The other end of the resistor R18 is also connected to the grounding capacitor C14, the grounding resistor R20, the gate of the field-effect transistor Q7, and the drain of the field-effect transistor Q13. The source of the field-effect transistor Q12 is grounded, and its gate is connected to both the grounding resistor R25 and the grounding capacitor C17. The source of the field-effect transistor Q13 is grounded, and its gate is connected to both the grounding resistor R2 and the grounding capacitor C18.

[0042] The switching execution unit of the present invention includes an astable multivibrator circuit built with capacitors and field-effect transistors and a switching circuit built with transistors and field-effect transistors.

[0043] The following details the principle of the astable multivibrator circuit: When the main power supply of the KRT N16 channel local processor hardware integrated system is powered on, due to the design differences in the parameters of C12, R13 and C11, R14, the gate voltage of the N-channel MOSFET Q6 reaches the turn-on voltage faster than the gate voltage of the N-channel MOSFET Q5. This causes MOSFET Q6 to conduct and MOSFET Q5 to be cut off. At this time, the gate voltage of the P-channel MOSFET Q2, which is used as a switch in the normal channel, is clamped to the clamping voltage through the Zener diode D4, reaching the turn-on voltage of MOSFET Q2. This causes the normal channel switch to conduct, and the motherboard is powered on.

[0044] When the MOSFET Q5 is turned off, the voltage at the negative terminal of the Zener diode D3 is close to the total power supply voltage, causing the gate voltage of the P-channel MOSFET to fail to reach the turn-on voltage. This causes the P-channel MOSFET Q1, which acts as a switch for the backup channel switch, to turn off, the backup channel switch to close, and the backup board to lose power.

[0045] After the motherboard is powered on, if the motherboard does not continuously output a PWM control signal, capacitors C6, C8, and C10 charge, and the level at the left end of the capacitors gradually increases. Capacitors C5, C7, and C9 discharge, and the level at the right end of the capacitors gradually decreases, causing MOSFET Q5 to conduct and MOSFET Q6 to be cut off. At this time, the gate voltage of the backup channel switch MOSFET Q1 is clamped to the clamping voltage through the Zener diode D3, reaching the turn-on voltage of MOSFET Q1, which turns on the backup channel switch and powers on the backup board. As long as the main power supply exists, this switching process will continue to repeat. The holding time of the two boards switching is determined by the RC network connecting the gates of MOSFETs Q5 and Q6.

[0046] When MOSFET Q6 is turned on, MOSFET Q4 is turned on, and the gate voltage of MOSFET Q13 connected to its collector reaches the turn-on voltage. MOSFET Q13 is turned on, and the gate of MOSFET Q7 connected to it is at a low level, so the on / off state of MOSFET Q7 is not controlled by the switching signal of the switching control unit. When MOSFET Q5 is turned off, MOSFET Q3 is turned off, and the gate of MOSFET Q12 connected to its collector is at a low level, not reaching the turn-on voltage, so MOSFET Q8 is turned off. The on / off state of MOSFET Q8 is only controlled by the switching signal of the switching control unit.

[0047] The following details the principle of the switch switching circuit: Due to the high-level switching signal output by the switching control unit, the field-effect transistor Q7 is not controlled by the switching signal of the switching control unit. This causes the gate of the field-effect transistor Q6 to maintain the steady-state voltage after power-on and to always meet the turn-on voltage, so that the field-effect transistor Q6 is always conducting. Thus, the normal channel switch is always conducting, and the motherboard card enters a stable and continuous power supply state from the initial power-on state.

[0048] The high-level switching signal output by the switching control unit turns on the field-effect transistor Q8, while the field-effect transistor Q5 connected to its drain remains off, thus keeping the backup channel switch off and the backup board in a stable, continuously de-energized state.

[0049] Optionally, in the switching control unit, one end of resistor R15, one end of resistor R16, the collector of transistor Q9, and the collector of transistor Q10 are simultaneously connected to serve as the power input terminal of the switching control unit, connected to the main power supply. The other end of resistor R15, the other end of resistor R16, the base of transistor Q9, and the base of transistor Q11 are simultaneously connected to serve as the input terminal of the switching control unit, simultaneously connected to the control signal output terminal of the motherboard and the control signal output terminal of the backup board. The emitter of transistor Q9, the emitter of transistor Q11, and one end of resistor R21 are simultaneously connected... The other end of resistor R21 is connected to one end of capacitor C15. The other end of capacitor C15 is simultaneously connected to the anode of diode D11 and the cathode of diode D12. The cathode of diode D11, grounding capacitor C16, grounding resistor R23, and the base of transistor Q10 are simultaneously connected. The anode of diode D12 is grounded. The emitter of transistor Q10, grounding resistor R24, and one end of resistor R22 are simultaneously connected to serve as the output terminal of the switching control unit and connected to the switching execution unit. The other end of resistor R22 is connected to the anode of LED D13, and the cathode of LED D13 is grounded.

[0050] Optionally, the switching execution unit has a first execution state and a second execution state. In the first execution state, the main power supply is powered on, the normal channel switch is turned on to supply power to the motherboard, and the motherboard continuously outputs a first control signal to trigger the switching control unit to output a continuous DC signal, so that the switching execution unit keeps the normal channel switch on and the motherboard is continuously powered on and operates normally.

[0051] In the second execution state, the motherboard stops outputting control signals, the switching execution unit automatically turns off the normal channel switch and turns on the backup channel switch to supply power to the backup board, and the backup board continuously outputs the second control signal to trigger the switching control unit to output a continuous DC signal, so that the switching execution unit keeps the backup channel switch on and the backup board continues to be powered and operates normally.

[0052] This invention also provides a hot-switching method based on the above-mentioned nuclear power KRTN16 channel local processor hardware integration system, the hot-switching method comprising:

[0053] S1: Supply power to the main power source;

[0054] S2: Control the execution switching unit to open the normal channel switch to supply power to the motherboard card;

[0055] S3: Determine whether the motherboard card is working properly. If yes, proceed to step S4; otherwise, proceed to step S6.

[0056] S4: Control the motherboard card to continuously output the first control signal;

[0057] S5: The switching control unit is triggered to output a continuous DC signal according to the first control signal, so that the switching execution unit keeps the normal channel switch on and the motherboard is continuously powered.

[0058] S6: Control the execution switching unit to turn on the backup channel switch to supply power to the backup board;

[0059] S7: Control the backup board to continuously output the second control signal;

[0060] S8: The switching control unit is triggered to output a continuous DC signal according to the second control signal, so that the switching execution unit keeps the backup channel switch on and the backup board is continuously powered.

[0061] S9: Determine whether the backup board is working properly. If yes, repeat steps S6-S8; otherwise, return to step S2.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hardware integration system for a nuclear power plant KRTN16-channel local processor, characterized in that, The nuclear power plant KRT N16 channel local processor hardware integration system includes: The system includes a main power supply, a backup power supply, a normal channel switch, a backup channel switch, a switching execution unit, a switching control unit, a motherboard card, and a backup board card. The main power supply is simultaneously connected to the input terminals of the normal channel switch, the backup channel switch, the switching execution unit, and the switching control unit. The main power supply is simultaneously connected to the output terminal of the normal channel switch and the input terminal of the motherboard card. The control signal output terminals of the motherboard card and the backup board card are simultaneously connected to the input terminal of the switching control unit. The output terminal of the switching control unit is connected to the input terminal of the switching execution unit. The output terminal of the switching execution unit is simultaneously connected to the execution signal input terminals of the normal channel switch and the backup channel switch. The output terminal of the backup channel switch is connected to the input terminal of the backup board card through the backup power supply. In the switching control unit, one end of resistor R15, one end of resistor R16, the collector of transistor Q9, and the collector of transistor Q10 are simultaneously connected to serve as the power input terminal of the switching control unit, connected to the main power supply. The other end of resistor R15, the other end of resistor R16, the base of transistor Q9, and the base of transistor Q11 are simultaneously connected to serve as the input terminal of the switching control unit, simultaneously connected to the control signal output terminal of the motherboard and the control signal output terminal of the backup board. The emitter of transistor Q9, the emitter of transistor Q11, and one end of resistor R21 are simultaneously connected... The other end of resistor R21 is connected to one end of capacitor C15. The other end of capacitor C15 is simultaneously connected to the anode of diode D11 and the cathode of diode D12. The cathode of diode D11, grounding capacitor C16, grounding resistor R23, and the base of transistor Q10 are simultaneously connected. The anode of diode D12 is grounded. The emitter of transistor Q10, grounding resistor R24, and one end of resistor R22 are simultaneously connected to serve as the output terminal of the switching control unit and connected to the switching execution unit. The other end of resistor R22 is connected to the anode of LED D13, and the cathode of LED D13 is grounded.

2. The nuclear power plant KRTN16 channel local processor hardware integration system according to claim 1, characterized in that, The normal channel switch includes resistor R2, resistor R3, field-effect transistor Q2, light-emitting diode D2, Zener diode D4, capacitor C2, and capacitor C4; One end of resistor R2, one end of capacitor C2, and the source of MOSFET Q2 are simultaneously connected to serve as the input terminal of the normal channel switch and connected to the main power supply. The other end of resistor R2, the other end of capacitor C2, and the gate of MOSFET Q2 are simultaneously connected to the negative terminal of Zener diode D4. The positive terminal of Zener diode D4 serves as the execution signal input terminal of the normal channel switch and is connected to the switching execution unit. The drain of MOSFET Q2, the positive terminal of capacitor C4, and one end of resistor R3 are simultaneously connected to serve as the output terminal of the normal channel switch and connected to the main power supply. The other end of resistor R3 is connected to the positive terminal of LED D2. The negative terminals of LED D2 and capacitor C4 are simultaneously grounded.

3. The nuclear power plant KRTN16 channel local processor hardware integration system according to claim 1, characterized in that, The backup channel switch includes resistor R1, resistor R4, field-effect transistor Q1, capacitor C1, capacitor C3, light-emitting diode D1, and Zener diode D3; One end of resistor R4, one end of capacitor C1, and the source of field-effect transistor Q1 are simultaneously connected to serve as the input terminal of the backup channel switch and connected to the main power supply. The other end of resistor R4, the other end of capacitor C1, and the gate of field-effect transistor Q1 are simultaneously connected to the negative terminal of Zener diode D3. The positive terminal of Zener diode D3 serves as the execution signal input terminal of the backup channel switch and is connected to the switching execution unit. The drain of field-effect transistor Q1, the positive terminal of capacitor C3, and one end of resistor R1 are simultaneously connected to serve as the output terminal of the backup channel switch and connected to the backup power supply. The other end of resistor R1 is connected to the positive terminal of light-emitting diode D1. The negative terminals of light-emitting diode D1 and capacitor C3 are simultaneously grounded.

4. The nuclear power plant KRTN16 channel local processor hardware integration system according to claim 1, characterized in that, In the switching execution unit, the emitter of transistor Q3, one end of resistor R5, one end of resistor R6, the cathode of diode D5, the cathode of diode D6, one end of resistor R7, one end of resistor R8, and the emitter of transistor Q4 are simultaneously connected as the power input terminal of the switching execution unit, connected to the main power supply. The other end of resistor R5, the other end of resistor R9, one end of capacitor C5, one end of capacitor C7, one end of capacitor C9, and the drain of MOSFET Q5 are simultaneously connected as the first output terminal of the switching execution unit, connected to the execution signal input terminal of the backup channel switch. The other end of resistor R6, the other end of capacitor C5, the other end of capacitor C7, the other end of capacitor C9, the anode of diode D5, the cathode of diode D8, the drain of MOSFET Q7, grounding capacitor C11, grounding resistor R14, and the gate of MOSFET Q6 are simultaneously connected. The anode of diode D6, the other end of resistor R7, one end of capacitor C6, one end of capacitor C8, and the other end of capacitor C10 are simultaneously connected as the power input terminal of the main power supply. One end of the resistor R9 is connected to the cathode of diode D7, the drain of MOSFET Q8, grounding capacitor C12, grounding resistor R13, and the gate of MOSFET Q5. The other end of the resistor R9 is connected to the base of transistor Q3. The other ends of capacitor C6, capacitor C8, capacitor C10, the drain of MOSFET Q6, the other end of resistor R8, and one end of resistor R10 are connected to serve as the second output terminal of the switching execution unit and the execution signal of the normal channel switch. The input terminal is connected, the other end of the resistor R10 is connected to the base of the transistor Q4, the collector of the transistor Q3 is connected to the ground resistor R11, the collector of the transistor Q4 is connected to the ground resistor R12, the source of the field-effect transistor Q5, the source of the field-effect transistor Q6, the cathode of the Zener diode D9, and the cathode of the Zener diode D10 are all grounded, the anode of the Zener diode D9 is connected to the anode of the diode D7, and the anode of the Zener diode D10 is connected to the anode of the diode D8; The gate of the field-effect transistor Q8, the grounding resistor R19, the grounding capacitor C13, one end of the resistor R17, and the drain of the field-effect transistor Q12 are all connected together. The source of the field-effect transistor Q8 is grounded. The other end of the resistor R17 is connected to one end of the resistor R18. The other end of the resistor R18 is also connected to the grounding capacitor C14, the grounding resistor R20, the gate of the field-effect transistor Q7, and the drain of the field-effect transistor Q13. The source of the field-effect transistor Q12 is grounded, and its gate is connected to both the grounding resistor R25 and the grounding capacitor C17. The source of the field-effect transistor Q13 is grounded, and its gate is connected to both the grounding resistor R2 and the grounding capacitor C18.

5. The nuclear power plant KRTN16 channel local processor hardware integration system according to any one of claims 1-4, characterized in that, The switching execution unit has a first execution state and a second execution state. In the first execution state, the main power supply is powered on, the normal channel switch is turned on to supply power to the motherboard, and the motherboard continuously outputs a first control signal to trigger the switching control unit to output a continuous DC signal, so that the switching execution unit keeps the normal channel switch on and the motherboard is continuously powered on and running normally. In the second execution state, the motherboard stops outputting control signals, the switching execution unit automatically turns off the normal channel switch and turns on the backup channel switch to supply power to the backup board, and the backup board continuously outputs the second control signal to trigger the switching control unit to output a continuous DC signal, so that the switching execution unit keeps the backup channel switch on and the backup board continues to be powered and operates normally.

6. A hot-switching method based on the nuclear power plant KRTN16 channel local processor hardware integration system according to any one of claims 1-5, characterized in that, The hot-switching method includes: S1: Supply power to the main power source; S2: Control the switching execution unit to open the normal channel switch to supply power to the motherboard card; S3: Determine whether the motherboard card is working properly. If yes, proceed to step S4; otherwise, proceed to step S6. S4: Control the motherboard card to continuously output the first control signal; S5: The switching control unit is triggered to output a continuous DC signal according to the first control signal, so that the switching execution unit keeps the normal channel switch on and the motherboard is continuously powered. S6: Control the switching execution unit to turn on the backup channel switch to supply power to the backup board; S7: Control the backup board to continuously output the second control signal; S8: The switching control unit is triggered to output a continuous DC signal according to the second control signal, so that the switching execution unit keeps the backup channel switch on and the backup board is continuously powered. S9: Determine whether the backup board is working properly. If yes, repeat steps S6-S8; otherwise, return to step S2.

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