Driving device of electrified railway contact network switch monitoring system

Abstract

The utility model discloses a driving device of an electrified railway contact network switch monitoring system, which belongs to the technical field of electrified railways and comprises a power supply circuit, a system peripheral circuit, a YX input interface circuit, a state indicating circuit, a YK output driving circuit and an MCU (Microprogrammed Control Unit) circuit, the system peripheral circuit, the YX input interface circuit, the state indicating circuit and the YK output driving circuit are respectively connected with the MCU circuit; the power supply circuit supplies power to the system peripheral circuit, the YX input interface circuit, the state indication circuit, the YK output drive circuit and the MCU circuit. According to the utility model, the problems of high cost and misoperation risk of the existing direct drive circuit are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrified railways, and particularly relates to a driving device for a monitoring system of a catenary switch of an electrified railway. Background Technique

[0002] The electric disconnector plays an important role in the electrified railway system. It is mainly used for isolation between the catenary and the traction power supply system to ensure the safety of trains and staff. At the same time, it is also used to isolate the faulty section to reduce the influence range of system faults. The switch needs to be able to operate quickly and reliably, and have good durability and environmental adaptability to cope with various challenges in the railway environment, such as high temperature, humidity, vibration, etc.

[0003] At present, the main problems and defects of the direct drive circuit of the electric disconnector of the electrified railway catenary are as follows: The original drive circuit uses two large-capacity contactors, resulting in high costs. The original drive circuit does not collect the opening and closing states of the disconnector in the local control circuit for operation locking, there is a risk of misoperation. The original drive circuit uses a mechanical timer for timeout control, with high costs and large timing errors. The connecting wires of the original drive circuit are numerous, resulting in high production costs. Content of the Utility Model

[0004] The utility model provides a driving device for a monitoring system of a catenary switch of an electrified railway, which solves the problems of high cost and risk of misoperation of the existing direct drive circuit.

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

[0006] The utility model provides a driving device for a monitoring system of a catenary switch of an electrified railway, including a power supply circuit, a system peripheral circuit, a YX input interface circuit, a status indication circuit, a YK output driving circuit and an MCU circuit;

[0007] The system peripheral circuit, the YX input interface circuit, the status indication circuit and the YK output driving circuit are respectively connected to the MCU circuit; the power supply circuit supplies power to the system peripheral circuit, the YX input interface circuit, the status indication circuit, the YK output driving circuit and the MCU circuit.

[0008] Further, the MCU circuit includes a chip U1 with the model of LPC824M201JHI33;

[0009] The 7th pin of the chip U1 is connected to the 2nd pin of the socket J1; the 6th pin of the chip U1 is connected to the 3rd pin of the socket J1; the 2nd pin of the socket J1 is also connected to one end of the resistor R5; the other end of the resistor R5 is respectively connected to the 1st pin of the socket J1 and the +3.3V voltage; the 3rd pin of the socket J1 is also connected to the grounding resistor R10; the 4th pin of the socket J1 is grounded; the 3rd pin of the chip U1 is respectively connected to one end of the resistor R8, the system peripheral circuit, and the YK output driving circuit; the other end of the resistor R8 is connected to the 5th pin of the socket J1; the 22nd pin, 23rd pin, 15th pin, 31st pin, and 32nd pin of the chip U1 are respectively connected to the YK output driving circuit; the 18th pin of the chip U1 is respectively connected to one end of the crystal oscillator X1 and the grounding capacitor C2; the 17th pin of the chip U1 is respectively connected to the other end of the crystal oscillator X1 and the grounding capacitor C1; the 2nd pin of the chip U1 is respectively connected to one end of the resistor R4 and the system peripheral circuit; the other end of the resistor R4 is connected to the +3.3V voltage; the 10th pin of the chip U1 is respectively connected to one end of the resistor R2, the status indication circuit, and the system peripheral circuit; the other end of the resistor R2 is connected to the +3.3V voltage; the 29th pin, 28th pin, 27th pin, 26th pin, and 14th pin of the chip U1 are respectively connected to the YX input interface circuit; the 13th pin, 12th pin, 11th pin, and 5th pin of the chip U1 are respectively connected to the system peripheral circuit; the 19th pin and 21st pin of the chip U1 are respectively connected to the +3.3V voltage; the 33rd pin and 20th pin of the chip U1 are grounded.

[0010] Further, the system peripheral circuit includes a chip U2 of model SP706REN, a row resistor RP1, a DIP switch T1 of model DS-02, and a DIP switch T2 of model DPL-04;

[0011] The first pin of the chip U2 is respectively connected to the grounding switch SW1 and one end of the resistor R1; the other end of the resistor R1 is connected to the eighth pin of the chip U2; the second pin of the chip U2 is connected to the +3.3V voltage; the third and fourth pins of the chip U2 are grounded; the seventh pin of the chip U2 is connected to one end of the resistor R7; the other end of the resistor R7 is connected to the third pin of U1; the sixth pin of the chip U2 is connected to the first pin of the DIP switch T1; the second pin of the DIP switch T1 is connected to the second pin of the chip U1; the fourth pin of the DIP switch T1 is connected to the tenth pin of the chip U1; the third pin of the DIP switch T1 is grounded; the first pin of the resistor array RP1 is connected to the +3.3V voltage; the second pin of the resistor array RP1 is respectively connected to the thirteenth pin of the chip U1 and the eighth pin of the DIP switch T2; the third pin of the resistor array RP1 is respectively connected to the twelfth pin of the chip U1 and the seventh pin of the DIP switch T2; the fourth pin of the resistor array RP1 is respectively connected to the eleventh pin of the chip U1 and the fifth pin of the DIP switch T2; the fifth pin of the resistor array RP1 is respectively connected to the fifth pin of the chip U1 and the fifth pin of the DIP switch T2; the first, second, third, and fourth pins of the DIP switch T2 are grounded.

[0012] Further, the YX input interface circuit includes couplers O1, O2, O3, O4, O7 with the model of TPL181 respectively, and a socket J3.

[0013] The first pin of the coupler O1 is respectively connected to the negative electrode of the diode D1 and one end of the resistor R14; the other end of the resistor R14 is respectively connected to one end of the capacitor C14 and one end of the resistor R13; the other end of the resistor R13 is connected to the positive electrode of the zener diode DW1; the negative electrode of the zener diode DW1 is connected to the third pin of the socket J3; the third pin of the coupler O1, the positive electrode of the diode D1, and the other end of the capacitor C14 are all connected to the ground 24VGND2; the fourth pin of the coupler O1 is grounded; the sixth pin of the coupler O1 is respectively connected to the twenty-ninth pin of the chip U1, one end of the resistor R15, and the grounding capacitor C15; the other end of the resistor R15 is connected to the +3.3V voltage.

[0014] The first pin of the coupler O2 is respectively connected to the negative electrode of the diode D2 and one end of the resistor R17; the other end of the resistor R17 is respectively connected to one end of the capacitor C16 and one end of the resistor R16; the other end of the resistor R16 is connected to the positive electrode of the zener diode DW2; the negative electrode of the zener diode DW2 is connected to the fourth pin of the socket J3; the third pin of the coupler O2, the positive electrode of the diode D2, and the other end of the capacitor C16 are all connected to the ground 24VGND2; the fourth pin of the coupler O2 is grounded; the sixth pin of the coupler O2 is respectively connected to the 28th pin of the chip U1, one end of the resistor R18, and the grounded capacitor C17; the other end of the resistor R18 is connected to the +3.3V voltage;

[0015] The first pin of the coupler O3 is respectively connected to the negative electrode of the diode D3 and one end of the resistor R20; the other end of the resistor R20 is respectively connected to one end of the capacitor C18 and one end of the resistor R19; the other end of the resistor R19 is connected to the positive electrode of the zener diode DW3; the negative electrode of the zener diode DW3 is connected to the fifth pin of the socket J3; the third pin of the coupler O3, the positive electrode of the diode D3, and the other end of the capacitor C18 are all connected to the ground 24VGND2; the fourth pin of the coupler O3 is grounded; the sixth pin of the coupler O3 is respectively connected to the 27th pin of the chip U1, one end of the resistor R21, and the grounded capacitor C19; the other end of the resistor R21 is connected to the +3.3V voltage;

[0016] The first pin of the coupler O5 is respectively connected to the negative electrode of the diode D5 and one end of the resistor R24; the other end of the resistor R24 is respectively connected to one end of the capacitor C20 and one end of the resistor R23; the other end of the resistor R23 is connected to the positive electrode of the zener diode DW4; the negative electrode of the zener diode DW4 is connected to the sixth pin of the socket J3; the third pin of the coupler O5, the positive electrode of the diode D5, and the other end of the capacitor C20 are all connected to the ground 24VGND2; the fourth pin of the coupler O5 is grounded; the sixth pin of the coupler O5 is respectively connected to the 26th pin of the chip U1, one end of the resistor R25, and the grounded capacitor C21; the other end of the resistor R25 is connected to the +3.3V voltage;

[0017] The first pin of the coupler O7 is respectively connected to the negative electrode of the diode D8 and one end of the resistor R28; the other end of the resistor R28 is respectively connected to one end of the capacitor C22 and one end of the resistor R27; the other end of the resistor R27 is connected to the positive electrode of the zener diode DW5; the negative electrode of the zener diode DW5 is respectively connected to the negative electrode of the diode D13 and +24VCN; the third pin of the coupler O7, the positive electrode of the diode D8 and the other end of the capacitor C22 are all connected to the ground 24VGND2; the fourth pin of the coupler O7 is grounded; the sixth pin of the coupler O7 is respectively connected to the fourteenth pin of the chip U1, one end of the resistor R29 and the grounded capacitor C23; the other end of the resistor R29 is connected to the +3.3V voltage;

[0018] The first pin of the socket J3 is connected to the positive electrode of the diode D12; the negative electrode of the diode D12 is connected to the +24V voltage; the second pin of the socket J3 is connected to the ground 24VGND1; the third pin of the socket J3 is also connected to the control combination input signal; the fourth pin of the socket J3 is also connected to the control separation input signal; the fifth pin of the socket J3 is also connected to the combination position signal; the sixth pin of the socket J3 is also connected to the separation position signal; the seventh pin of the socket J3 is connected to the positive electrode of the diode D13; the negative electrode of the diode D13 is also connected to the inhibit operation signal; the eighth pin of the socket J3 is connected to the ground 24VGND2.

[0019] Further, the YK output driving circuit includes the chips U4 and U5 with the model of SN74LVC1G04DBVR, the chip U6 with the model of SN74LVC139AD, and the couplers O4, O6, O8 and O9 with the model of TLP127; the YK output driving circuit also includes the relays RL1, RL2 and RL5 with the model of HF49FD, and the relays RL3, RL4, RL6 and RL7 with the model of G2RL-1A4;

[0020] The second pin of chip U4 is connected to the third pin of chip U1; the third pin of chip U4 is grounded; the fifth pin of U4 is connected to the +3.3V voltage; the fourth pin of U4 is connected to the first pin of chip U5; the second pin of U5 is connected to the fifteenth pin of chip U1; the third pin of chip U5 is grounded; the fifth pin of chip U5 is connected to the +3.3V voltage; the fourth pin of chip U5, the first pin of chip U6, and the fifteenth pin of chip U6 are all connected to one end of resistor R22; the second pin of chip U6 is connected to the thirty-second pin of chip U1; the third pin of chip U6 is connected to the thirty-first pin of chip U1; the fourteenth pin of chip U6 is connected to the twenty-third pin of chip U1; the thirteenth pin of chip U6 is connected to the twenty-second pin of chip U1; the eighth pin of chip U6 is grounded; the fifth pin of chip U6 is connected to one end of resistor R26; the sixth pin of chip U6 is connected to one end of resistor R30; the eleventh pin of chip U6 is connected to one end of resistor R31; the sixteenth pin of U6 is connected to the +3.3V voltage;

[0021] The first pin of coupler O4, the first pin of coupler O6, the first pin of coupler O8, and the first pin of coupler O9 are all connected to the +3.3V voltage; the fourth pin of coupler O4, the fourth pin of coupler O6, and the fourth pin of coupler O8 are all connected to ground 24VGND1; the fourth pin of coupler O9 is connected to ground 24VGND2;

[0022] The third pin of coupler O4 is connected to the other end of resistor R22; the sixth pin of coupler O4 is respectively connected to the second pin of relay RL1 and the positive electrode of diode D4; the first pin of relay RL1, the negative electrode of diode D4, and the sixth contact of relay RL1 are all connected to the +24V voltage; the eighth contact of relay RL1 is connected to +24VCN;

[0023] The third pin of the coupler O6 is connected to the other end of the resistor R26; the sixth pin of the coupler O6 is respectively connected to the first pin of the relay RL3 and the first pin of the relay RL4; the first pin of the relay RL3 is also connected to the positive pole of the diode D6; the fifth pin of the relay RL3 and the negative pole of the diode D6 are both connected to +24VCN; the third contact of the relay RL3 is connected to the first pin of the socket J4; the fourth contact of the relay RL3 is connected to the second pin of the socket J4; the first pin of the relay RL4 is also connected to the positive pole of the diode D10; the fifth pin of the relay RL4 and the negative pole of the diode D10 are both connected to +24VCN; the third contact of the relay RL4 is connected to the fifth pin of the socket J4; the fourth contact of the relay RL4 is connected to the sixth pin of the socket J4;

[0024] The third pin of the coupler O8 is connected to the other end of the resistor R30; the sixth pin of the coupler O8 is respectively connected to the first pin of the relay RL6 and the first pin of the relay RL7; the first pin of the relay RL6 is also connected to the positive pole of the diode D7; the fifth pin of the relay RL6 and the negative pole of the diode D7 are both connected to +24VCN; the third contact of the relay RL6 is connected to the third pin of the socket J4; the fourth contact of the relay RL6 is connected to the fourth pin of the socket J4; the first pin of the relay RL7 is also connected to the positive pole of the diode D11; the fifth pin of the relay RL7 and the negative pole of the diode D11 are both connected to +24VCN; the third contact of the relay RL7 is connected to the seventh pin of the socket J4; the fourth contact of the relay RL7 is connected to the eighth pin of the socket J4;

[0025] The third pin of the coupler O9 is connected to the other end of the resistor R31; the sixth pin of the coupler O9 is respectively connected to the second pin of the relay RL2 and the second pin of the relay RL5; the second pin of the relay RL2 is also connected to the positive pole of the diode D9; the first pin of the relay RL2 and the negative pole of the diode D9 are both connected to +24VCN; the sixth contact of the relay RL2 is connected to the first pin of the socket J5; the eighth contact of the relay RL2 is connected to the second pin of the socket J5; the first pin of the relay RL5 is connected to +24VCN; the sixth contact of the relay RL5 is connected to the third pin of the socket J5; the eighth contact of the relay RL5 is connected to the fourth pin of the socket J5.

[0026] Further, the status indication circuit includes a chip U7 of model SN74LVC07AD, a double-layer LED lamp LED1, a double-layer LED lamp LED2, and a double-layer LED lamp LED3;

[0027] The first pin of the chip U7 is connected to the tenth pin of the chip U1; the third pin of the chip U7 is connected to the fifth pin of the chip U6; the fifth pin of the chip U7 is connected to the sixth pin of the chip U6; the ninth pin of the chip U7 is connected to the eleventh pin of the chip U6; the eleventh pin of the chip U7 is connected to the fourteenth pin of the chip U1; the thirteenth and seventh pins of the chip U7 are grounded; the second pin of the chip U7 is connected to one end of the resistor R40; the other end of the resistor R40 is connected to the fourth pin of the double-layer LED lamp LED3; the first and third pins of the double-layer LED lamp LED3 are both connected to the +3.3V voltage; the second pin of the double-layer LED lamp LED3 is connected to the grounding resistor R39; the fourth pin of the chip U7 is connected to one end of the resistor R34; the other end of the resistor R34 is connected to the second pin of the double-layer LED lamp LED1; the sixth pin of the chip U7 is connected to one end of the resistor R36; the other end of the resistor R36 is connected to the fourth pin of the double-layer LED lamp LED1; the first and third pins of the double-layer LED lamp LED1 are both connected to the +3.3V voltage; the eighth pin of the chip U7 is connected to one end of the resistor R37; the other end of the resistor R37 is connected to the second pin of the double-layer LED lamp LED2; the tenth pin of the chip U7 is connected to one end of the resistor R38; the other end of the resistor R38 is connected to the fourth pin of the double-layer LED lamp LED2; the first and third pins of the double-layer LED lamp LED2 are both connected to the +3.3V voltage; the fourteenth pin of the chip U7 is connected to the +3.3V voltage.

[0028] Further, the power supply circuit includes an ACDC power supply PW1 of model IF2403LS-1WR3;

[0029] The first pin of the power supply PW1 is respectively connected to one end of the inductor L1 and the positive electrode of the electrolytic capacitor E3; the other end of the inductor L1 is respectively connected to the positive electrode of the electrolytic capacitor E2 and one end of the fuse F1; the other end of the fuse F1 outputs a +24V voltage; the second pin of the power supply PW1 is respectively connected to the negative electrode of the electrolytic capacitor E2, the negative electrode of the electrolytic capacitor E3 and one end of the capacitor C13, and serves as the ground 24VGND1; the sixth pin of the power supply PW1 is respectively connected to the seventh pin of the power supply PW1 and the positive electrode of the electrolytic capacitor E1, and outputs a +3.3V voltage; the fifth pin of the power supply PW1 is respectively connected to the fourth pin of the power supply PW1, the other end of the capacitor C13 and the negative electrode of the electrolytic capacitor E1, and serves as the grounding port.

[0030] ​The beneficial effects of the present utility model are as follows: (1) By introducing an MCU and performing logical operations, unreasonable operations are blocked, including prohibiting closing operations when the disconnector is in the closed position and prohibiting opening operations when the disconnector is in the open position, making the functions more complete;

[0031] (2) Using 1 contactor and 4 power relays, namely relay RL3, relay RL4, relay RL6, and relay RL7, to replace 2 contactors, and using MCU software timing to replace the hardware timer, the component cost is lower; using circuit board traces to replace external wiring reduces the consumption of wiring materials and the labor for wiring;

[0032] (3) Integrating most of the drive control circuits inside the circuit board makes the volume smaller;

[0033] (4) Adopting MCU software timing provides accurate timing and flexible configuration. Description of the Drawings

[0034] Figure 1 It is a schematic block diagram of the drive device of the catenary switch monitoring system of the present utility model for electrified railways.

[0035] Figure 2 It is a circuit diagram of the MCU circuit of the present utility model.

[0036] Figure 3 It is a circuit diagram of the peripheral circuit of the present utility model system.

[0037] Figure 4 It is a circuit diagram of the first part of the YX input interface circuit of the present utility model.

[0038] Figure 5 It is a circuit diagram of the second part of the YX input interface circuit of the present utility model.

[0039] Figure 6 It is a circuit diagram of the first part of the YK output drive circuit of the present utility model.

[0040] Figure 7 It is a circuit diagram of the second part of the YK output drive circuit of the present utility model.

[0041] Figure 8 It is a circuit diagram of the status indication circuit of the present utility model.

[0042] Figure 9 It is a circuit diagram of the power supply circuit of the present utility model.

[0043] Figure 10 It is a schematic diagram of the structure of the direct drive cable control system.

[0044] Figure 11 It is a circuit diagram of the first drive in the monitoring unit.

[0045] Figure 12 It is the second driving circuit diagram in the monitoring unit.

[0046] Figure 13 It is the first structural schematic diagram of the driving device of the present utility model connected to the outside.

[0047] Figure 14 It is the second structural schematic diagram of the driving device of the present utility model connected to the outside.

[0048] Figure 15 It is the third structural schematic diagram of the driving device of the present utility model connected to the outside. Detailed implementation manners

[0049] Those of ordinary skill in the art will realize that the embodiments described herein are for helping readers understand the principles of the present utility model, and it should be understood that the protection scope of the present utility model is not limited to such specific statements and embodiments. Those of ordinary skill in the art can make various other specific deformations and combinations that do not depart from the essence of the present utility model according to these technical revelations disclosed by the present utility model, and these deformations and combinations are still within the protection scope of the present utility model.

[0050] Embodiment

[0051] As Figure 1 shown, the present utility model provides a driving device for an electrified railway catenary switch monitoring system, including a power supply circuit, a system peripheral circuit, a YX input interface circuit, a status indication circuit, a YK output driving circuit, and an MCU circuit;

[0052] The system peripheral circuit, the YX input interface circuit, the status indication circuit, and the YK output driving circuit are respectively connected to the MCU circuit; the power supply circuit supplies power to the system peripheral circuit, the YX input interface circuit, the status indication circuit, the YK output driving circuit, and the MCU circuit.

[0053] As Figure 2 shown, the MCU circuit includes a chip U1 with the model number LPC824M201JHI33;

[0054] The 7th pin of the chip U1 is connected to the 2nd pin of the socket J1; the 6th pin of the chip U1 is connected to the 3rd pin of the socket J1; the 2nd pin of the socket J1 is also connected to one end of the resistor R5; the other end of the resistor R5 is respectively connected to the 1st pin of the socket J1 and the +3.3V voltage; the 3rd pin of the socket J1 is also connected to the grounding resistor R10; the 4th pin of the socket J1 is grounded; the 3rd pin of the chip U1 is respectively connected to one end of the resistor R8, the system peripheral circuit and the YK output driving circuit; the other end of the resistor R8 is connected to the 5th pin of the socket J1; the 22nd, 23rd, 15th, 31st and 32nd pins of the chip U1 are respectively connected to the YK output driving circuit; the 18th pin of the chip U1 is respectively connected to one end of the crystal oscillator X1 and the grounding capacitor C2; the 17th pin of the chip U1 is respectively connected to the other end of the crystal oscillator X1 and the grounding capacitor C1; the 2nd pin of the chip U1 is respectively connected to one end of the resistor R4 and the system peripheral circuit; the other end of the resistor R4 is connected to the +3.3V voltage; the 10th pin of the chip U1 is respectively connected to one end of the resistor R2, the status indication circuit and the system peripheral circuit; the other end of the resistor R2 is connected to the +3.3V voltage; the 29th, 28th, 27th, 26th and 14th pins of the chip U1 are respectively connected to the YX input interface circuit; the 13th, 12th, 11th and 5th pins of the chip U1 are respectively connected to the system peripheral circuit; the 19th and 21st pins of the chip U1 are respectively connected to the +3.3V voltage; the 33rd and 20th pins of the chip U1 are grounded.

[0055] As Figure 3 shown, the system peripheral circuit includes a chip U2 of model SP706REN, a row resistor RP1, a DIP switch T1 of model DS-02 and a DIP switch T2 of model DPL-04;

[0056] The first pin of the chip U2 is respectively connected to the grounding switch SW1 and one end of the resistor R1; the other end of the resistor R1 is connected to the eighth pin of the chip U2; the second pin of the chip U2 is connected to the +3.3V voltage; the third and fourth pins of the chip U2 are grounded; the seventh pin of the chip U2 is connected to one end of the resistor R7; the other end of the resistor R7 is connected to the third pin of U1; the sixth pin of the chip U2 is connected to the first pin of the DIP switch T1; the second pin of the DIP switch T1 is connected to the second pin of the chip U1; the fourth pin of the DIP switch T1 is connected to the tenth pin of the chip U1; the third pin of the DIP switch T1 is grounded; the first pin of the resistor array RP1 is connected to the +3.3V voltage; the second pin of the resistor array RP1 is respectively connected to the thirteenth pin of the chip U1 and the eighth pin of the DIP switch T2; the third pin of the resistor array RP1 is respectively connected to the twelfth pin of the chip U1 and the seventh pin of the DIP switch T2; the fourth pin of the resistor array RP1 is respectively connected to the eleventh pin of the chip U1 and the fifth pin of the DIP switch T2; the fifth pin of the resistor array RP1 is respectively connected to the fifth pin of the chip U1 and the fifth pin of the DIP switch T2; the first, second, third, and fourth pins of the DIP switch T2 are grounded.

[0057] As Figure 4 and Figure 5 shown, the YX input interface circuit includes couplers O1, O2, O3, O4, O7 with the model of TPL181 and a socket J3.

[0058] The first pin of the coupler O1 is respectively connected to the negative electrode of the diode D1 and one end of the resistor R14; the other end of the resistor R14 is respectively connected to one end of the capacitor C14 and one end of the resistor R13; the other end of the resistor R13 is connected to the positive electrode of the zener diode DW1; the negative electrode of the zener diode DW1 is connected to the third pin of the socket J3; the third pin of the coupler O1, the positive electrode of the diode D1, and the other end of the capacitor C14 are all connected to the ground 24VGND2; the fourth pin of the coupler O1 is grounded; the sixth pin of the coupler O1 is respectively connected to the twenty-ninth pin of the chip U1, one end of the resistor R15, and the grounding capacitor C15; the other end of the resistor R15 is connected to the +3.3V voltage.

[0059] The first pin of the coupler O2 is respectively connected to the negative electrode of the diode D2 and one end of the resistor R17; the other end of the resistor R17 is respectively connected to one end of the capacitor C16 and one end of the resistor R16; the other end of the resistor R16 is connected to the positive electrode of the zener diode DW2; the negative electrode of the zener diode DW2 is connected to the fourth pin of the socket J3; the third pin of the coupler O2, the positive electrode of the diode D2 and the other end of the capacitor C16 are all connected to the ground 24VGND2; the fourth pin of the coupler O2 is grounded; the sixth pin of the coupler O2 is respectively connected to the 28th pin of the chip U1, one end of the resistor R18 and the grounded capacitor C17; the other end of the resistor R18 is connected to the +3.3V voltage;

[0060] The first pin of the coupler O3 is respectively connected to the negative electrode of the diode D3 and one end of the resistor R20; the other end of the resistor R20 is respectively connected to one end of the capacitor C18 and one end of the resistor R19; the other end of the resistor R19 is connected to the positive electrode of the zener diode DW3; the negative electrode of the zener diode DW3 is connected to the fifth pin of the socket J3; the third pin of the coupler O3, the positive electrode of the diode D3 and the other end of the capacitor C18 are all connected to the ground 24VGND2; the fourth pin of the coupler O3 is grounded; the sixth pin of the coupler O3 is respectively connected to the 27th pin of the chip U1, one end of the resistor R21 and the grounded capacitor C19; the other end of the resistor R21 is connected to the +3.3V voltage;

[0061] The first pin of the coupler O5 is respectively connected to the negative electrode of the diode D5 and one end of the resistor R24; the other end of the resistor R24 is respectively connected to one end of the capacitor C20 and one end of the resistor R23; the other end of the resistor R23 is connected to the positive electrode of the zener diode DW4; the negative electrode of the zener diode DW4 is connected to the sixth pin of the socket J3; the third pin of the coupler O5, the positive electrode of the diode D5 and the other end of the capacitor C20 are all connected to the ground 24VGND2; the fourth pin of the coupler O5 is grounded; the sixth pin of the coupler O5 is respectively connected to the 26th pin of the chip U1, one end of the resistor R25 and the grounded capacitor C21; the other end of the resistor R25 is connected to the +3.3V voltage;

[0062] The first pin of the coupler O7 is respectively connected to the negative electrode of the diode D8 and one end of the resistor R28; the other end of the resistor R28 is respectively connected to one end of the capacitor C22 and one end of the resistor R27; the other end of the resistor R27 is connected to the positive electrode of the zener diode DW5; the negative electrode of the zener diode DW5 is respectively connected to the negative electrode of the diode D13 and +24VCN; the third pin of the coupler O7, the positive electrode of the diode D8, and the other end of the capacitor C22 are all connected to the ground 24VGND2; the fourth pin of the coupler O7 is grounded; the sixth pin of the coupler O7 is respectively connected to the fourteenth pin of the chip U1, one end of the resistor R29, and the grounded capacitor C23; the other end of the resistor R29 is connected to the +3.3V voltage;

[0063] The first pin of the socket J3 is connected to the positive electrode of the diode D12; the negative electrode of the diode D12 is connected to the +24V voltage; the second pin of the socket J3 is connected to the ground 24VGND1; the third pin of the socket J3 is also connected to the control combined input signal; the fourth pin of the socket J3 is also connected to the control split input signal; the fifth pin of the socket J3 is also connected to the combined position signal; the sixth pin of the socket J3 is also connected to the split position signal; the seventh pin of the socket J3 is connected to the positive electrode of the diode D13; the negative electrode of the diode D13 is also connected to the inhibit operation signal; the eighth pin of the socket J3 is connected to the ground 24VGND2.

[0064] As Figure 6 and Figure 7 shown, the YK output driving circuit includes the chips U4 and U5 with the model number SN74LVC1G04DBVR, the chip U6 with the model number SN74LVC139AD, and the couplers O4, O6, O8, and O9 with the model number TLP127; the YK output driving circuit also includes the relays RL1, RL2, RL5 with the model number HF49FD, and the relays RL3, RL4, RL6, and RL7 with the model number G2RL-1A4;

[0065] The second pin of chip U4 is connected to the third pin of chip U1; the third pin of chip U4 is grounded; the fifth pin of U4 is connected to the +3.3V voltage; the fourth pin of U4 is connected to the first pin of chip U5; the second pin of U5 is connected to the fifteenth pin of chip U1; the third pin of chip U5 is grounded; the fifth pin of chip U5 is connected to the +3.3V voltage; the fourth pin of chip U5, the first pin of chip U6, and the fifteenth pin of chip U6 are all connected to one end of resistor R22; the second pin of chip U6 is connected to the thirty-second pin of chip U1; the third pin of chip U6 is connected to the thirty-first pin of chip U1; the fourteenth pin of chip U6 is connected to the twenty-third pin of chip U1; the thirteenth pin of chip U6 is connected to the twenty-second pin of chip U1; the eighth pin of chip U6 is grounded; the fifth pin of chip U6 is connected to one end of resistor R26; the sixth pin of chip U6 is connected to one end of resistor R30; the eleventh pin of chip U6 is connected to one end of resistor R31; the sixteenth pin of U6 is connected to the +3.3V voltage;

[0066] The first pin of coupler O4, the first pin of coupler O6, the first pin of coupler O8, and the first pin of coupler O9 are all connected to the +3.3V voltage; the fourth pin of coupler O4, the fourth pin of coupler O6, and the fourth pin of coupler O8 are all connected to ground 24VGND1; the fourth pin of coupler O9 is connected to ground 24VGND2;

[0067] The third pin of coupler O4 is connected to the other end of resistor R22; the sixth pin of coupler O4 is respectively connected to the second pin of relay RL1 and the positive electrode of diode D4; the first pin of relay RL1, the negative electrode of diode D4, and the sixth contact of relay RL1 are all connected to the +24V voltage; the eighth contact of relay RL1 is connected to +24VCN;

[0068] The third pin of the coupler O6 is connected to the other end of the resistor R26; the sixth pin of the coupler O6 is respectively connected to the first pin of the relay RL3 and the first pin of the relay RL4; the first pin of the relay RL3 is also connected to the positive electrode of the diode D6; the fifth pin of the relay RL3 and the negative electrode of the diode D6 are both connected to +24VCN; the third contact of the relay RL3 is connected to the first pin of the socket J4; the fourth contact of the relay RL3 is connected to the second pin of the socket J4; the first pin of the relay RL4 is also connected to the positive electrode of the diode D10; the fifth pin of the relay RL4 and the negative electrode of the diode D10 are both connected to +24VCN; the third contact of the relay RL4 is connected to the fifth pin of the socket J4; the fourth contact of the relay RL4 is connected to the sixth pin of the socket J4;

[0069] The third pin of the coupler O8 is connected to the other end of the resistor R30; the sixth pin of the coupler O8 is respectively connected to the first pin of the relay RL6 and the first pin of the relay RL7; the first pin of the relay RL6 is also connected to the positive electrode of the diode D7; the fifth pin of the relay RL6 and the negative electrode of the diode D7 are both connected to +24VCN; the third contact of the relay RL6 is connected to the third pin of the socket J4; the fourth contact of the relay RL6 is connected to the fourth pin of the socket J4; the first pin of the relay RL7 is also connected to the positive electrode of the diode D11; the fifth pin of the relay RL7 and the negative electrode of the diode D11 are both connected to +24VCN; the third contact of the relay RL7 is connected to the seventh pin of the socket J4; the fourth contact of the relay RL7 is connected to the eighth pin of the socket J4;

[0070] The third pin of the coupler O9 is connected to the other end of the resistor R31; the sixth pin of the coupler O9 is respectively connected to the second pin of the relay RL2 and the second pin of the relay RL5; the second pin of the relay RL2 is also connected to the positive electrode of the diode D9; the first pin of the relay RL2 and the negative electrode of the diode D9 are both connected to +24VCN; the sixth contact of the relay RL2 is connected to the first pin of the socket J5; the eighth contact of the relay RL2 is connected to the second pin of the socket J5; the first pin of the relay RL5 is connected to +24VCN; the sixth contact of the relay RL5 is connected to the third pin of the socket J5; the eighth contact of the relay RL5 is connected to the fourth pin of the socket J5.

[0071] As Figure 8 shown, the status indication circuit includes a chip U7 of model SN74LVC07AD, a double-layer LED lamp LED1, a double-layer LED lamp LED2, and a double-layer LED lamp LED3;

[0072] The first pin of the chip U7 is connected to the tenth pin of the chip U1; the third pin of the chip U7 is connected to the fifth pin of the chip U6; the fifth pin of the chip U7 is connected to the sixth pin of the chip U6; the ninth pin of the chip U7 is connected to the eleventh pin of the chip U6; the eleventh pin of the chip U7 is connected to the fourteenth pin of the chip U1; the thirteenth and seventh pins of the chip U7 are grounded; the second pin of the chip U7 is connected to one end of the resistor R40; the other end of the resistor R40 is connected to the fourth pin of the double-layer LED lamp LED3; the first and third pins of the double-layer LED lamp LED3 are both connected to the +3.3V voltage; the second pin of the double-layer LED lamp LED3 is connected to the grounding resistor R39; the fourth pin of the chip U7 is connected to one end of the resistor R34; the other end of the resistor R34 is connected to the second pin of the double-layer LED lamp LED1; the sixth pin of the chip U7 is connected to one end of the resistor R36; the other end of the resistor R36 is connected to the fourth pin of the double-layer LED lamp LED1; the first and third pins of the double-layer LED lamp LED1 are both connected to the +3.3V voltage; the eighth pin of the chip U7 is connected to one end of the resistor R37; the other end of the resistor R37 is connected to the second pin of the double-layer LED lamp LED2; the tenth pin of the chip U7 is connected to one end of the resistor R38; the other end of the resistor R38 is connected to the fourth pin of the double-layer LED lamp LED2; the first and third pins of the double-layer LED lamp LED2 are both connected to the +3.3V voltage; the fourteenth pin of the chip U7 is connected to the +3.3V voltage.

[0073] As Figure 9 shown, the power supply circuit includes an ACDC power supply PW1 of model IF2403LS-1WR3;

[0074] The first pin of the power supply PW1 is respectively connected to one end of the inductor L1 and the positive electrode of the electrolytic capacitor E3; the other end of the inductor L1 is respectively connected to the positive electrode of the electrolytic capacitor E2 and one end of the fuse F1; the other end of the fuse F1 outputs a +24V voltage; the second pin of the power supply PW1 is respectively connected to the negative electrode of the electrolytic capacitor E2, the negative electrode of the electrolytic capacitor E3 and one end of the capacitor C13, and serves as the ground 24VGND1; the sixth pin of the power supply PW1 is respectively connected to the seventh pin of the power supply PW1 and the positive electrode of the electrolytic capacitor E1, and outputs a +3.3V voltage; the fifth pin of the power supply PW1 is respectively connected to the fourth pin of the power supply PW1, the other end of the capacitor C13 and the negative electrode of the electrolytic capacitor E1, and serves as the grounding port.

[0075] In this embodiment, the existing electric disconnector control for the catenary of electrified railways often adopts direct-drive cable control, and the system structure is as shown in Figure 10 , and the drive circuit in the monitoring unit is as shown in Figure 11 , Figure 12 .

[0076] As shown in Figure 11 , during the local closing operation, the SK1 change-over switch rotates to positions 1 and 2, the HA1 closing button is pressed, the HJ1 closing contactor operates, driving the disconnector in the figure to operate. Similarly, the output contacts 13 and 14 of the HJ1 closing contactor are maintained to keep the HJ1 closing contactor operating continuously until the disconnector is closed in place. The opening operation process is similar to this process. Therefore, the original drive circuit does not collect the opening and closing states of the disconnector in the local control circuit for operation interlocking, and there is a risk of misoperation.

[0077] In this embodiment, the present utility model designs a circuit board, and the designed drive device is connected as shown in Figures 13 - 15 . The circuit board is built-in with an MCU, which simultaneously collects the operation mode change-over switch, closing button input, opening button input, disconnector closing position signal, opening position signal, external interlocking signal, etc. The MCU performs logical operations to lock illegal operation requests.

[0078] The closing operation process of the present utility model is as follows: The closing operation button HA1 or the YKH node of the monitoring device is closed. At the same time, the change-over switch SK1 rotates to positions 11 - 12 (local position). The disconnector closing position signal K13 is in the closed position and the opening signal K14 is in the open position. The MCU collects the above signals, performs logical operations, outputs signals, drives the power relays RL3 and RL4, connects the closing circuit of the disconnector motor. After a specified delay time, the MCU outputs signals again to drive the power relays RL2 and RL5. The power relays RL2 and RL drive the KM contactor to connect the drive power supply of the disconnector motor. The disconnector motor operates continuously. When it reaches the closing position, the SQ1 and SQ3 travel switches in the disconnector mechanism are pushed open, the closing control circuit is cut off, and the motor stops operating. After the MCU continues to delay for the specified time, it cancels the drive signals of the power relays RL2 and RL5, thereby releasing the KM contactor. After the MCU continues to delay for the specified time, it cancels the drive signals of the power relays RL3 and RL4, thus completing the entire closing operation process.

[0079] The process of the opening operation of the present utility model is as follows: The opening operation button FA1 or the monitoring device YKF node is closed. At the same time, the transfer switch SK1 is rotated to the 11-12 position (local position). The closing signal K13 of the disconnecting switch is in the off position, and the opening signal K14 is in the on position. The MCU collects the above signals, performs logical operations, outputs signals, drives the power relays RL6 and RL7, connects the opening circuit of the disconnecting switch motor. After a specified time delay, the MCU outputs signals again to drive the power relays RL2 and RL5. The power relays RL2 and RL5 drive the KM contactor to connect the driving power supply of the disconnecting switch motor. The disconnecting switch motor continues to operate. When it reaches the closing position, the travel switches SQ2 and SQ4 in the disconnecting switch mechanism are actuated to cut off the closing control circuit and stop the motor operation. After the MCU continues to delay for the specified time, the driving signals of the power relays RL2 and RL5 are withdrawn to release the KM contactor. After the MCU continues to delay for the specified time, the driving signals of the power relays RL3 and RL4 are withdrawn to complete the entire opening operation process.

[0080] In summary, the present utility model introduces an MCU, which locks unreasonable operations through logical operations, including prohibiting closing operations when the disconnecting switch is in the closed position and prohibiting opening operations when the disconnecting switch is in the open position, making the function more perfect. And it uses 1 contactor and 4 power relays, namely relay RL3, relay RL4, relay RL6 and relay RL7, to replace 2 contactors. It uses MCU software timing to replace the hardware timer, with lower component costs. At the same time, it uses circuit board traces to replace external wiring, reducing the consumption of wiring materials and the labor for wiring. Most of the drive control circuits are integrated in the circuit board, with a smaller volume. Using MCU software timing, the timing is accurate and the configuration is flexible.

Claims

1. A driving device for an electrified railway overhead line switch monitoring system, characterized in that: It includes power supply circuit, system peripheral circuit, YX input interface circuit, status indication circuit, YK output drive circuit and MCU circuit; The system peripheral circuit, YX input interface circuit, status indication circuit and YK output drive circuit are respectively connected to the MCU circuit; the power supply circuit supplies power to the system peripheral circuit, YX input interface circuit, status indication circuit, YK output drive circuit and MCU circuit.

2. The driving device of the electrified railway overhead contact network switch monitoring system according to claim 1, characterized in that: The MCU circuit includes a chip U1 of model LPC824M201JHI33; The 7th pin of the chip U1 is connected to the 2nd pin of the power strip J1; the 6th pin of the chip U1 is connected to the 3rd pin of the power strip J1; the 2nd pin of the power strip J1 is also connected to one end of the resistor R5; the other end of the resistor R5 is respectively connected to the 1st pin of the power strip J1 and the +3.3V voltage; the 3rd pin of the power strip J1 is also connected to the grounding resistor R10; the 4th pin of the power strip J1 is grounded; the 3rd pin of the chip U1 is respectively connected to one end of the resistor R8, the system peripheral circuit and the YK output drive circuit; the other end of the resistor R8 is connected to the 5th pin of the power strip J1; the 22nd pin, the 23rd pin, the 15th pin, the 31st pin and the 32nd pin of the chip U1 are respectively connected to the YK output drive circuit; the 18th pin of the chip U1 is respectively connected to one end of the crystal oscillator X1 and the grounding capacitor C2; The 17th pin of the chip U1 is respectively connected to the other end of the crystal oscillator X1 and the grounding capacitor C1; the 2nd pin of the chip U1 is respectively connected to one end of the resistor R4 and the system peripheral circuit; the other end of the resistor R4 is connected to the +3.3V voltage; the 10th pin of the chip U1 is respectively connected to one end of the resistor R2, the status indication circuit and the system peripheral circuit; the other end of the resistor R2 is connected to the +3.3V voltage; the 29th pin, the 28th pin, the 27th pin, the 26th pin and the 14th pin of the chip U1 are respectively connected to the YX input interface circuit; the 13th pin, the 12th pin, the 11th pin and the 5th pin of the chip U1 are respectively connected to the system peripheral circuit; the 19th pin and the 21st pin of the chip U1 are respectively connected to the +3.3V voltage; the 33rd pin and the 20th pin of the chip U1 are grounded.

3. The driving device of the electrified railway overhead contact network switch monitoring system according to claim 2, characterized in that: The system peripheral circuit includes a chip U2 of model SP706REN, a resistor RP1, a dip switch T1 of model DS-02, and a dip switch T2 of model DPL-04; The first pin of the chip U2 is connected to the ground switch SW1 and one end of the resistor R1 respectively; the other end of the resistor R1 is connected to the eighth pin of the chip U2; the second pin of the chip U2 is connected to the +3.3V voltage; the third and fourth pins of the chip U2 are grounded; the seventh pin of the chip U2 is connected to one end of the resistor R7; the other end of the resistor R7 is connected to the third pin of U1; the sixth pin of the chip U2 is connected to the first pin of the dip switch T1; the second pin of the dip switch T1 is connected to the second pin of the chip U1; the fourth pin of the dip switch T1 is connected to the tenth pin of the chip U1; the dip switch T The third pin of the resistor RP1 is grounded; the first pin of the resistor RP1 is connected to the +3.3V voltage; the second pin of the resistor RP1 is respectively connected to the 13th pin of the chip U1 and the 8th pin of the dip switch T2; the third pin of the resistor RP1 is respectively connected to the 12th pin of the chip U1 and the 7th pin of the dip switch T2; the fourth pin of the resistor RP1 is respectively connected to the 11th pin of the chip U1 and the 5th pin of the dip switch T2; the fifth pin of the resistor RP1 is respectively connected to the 5th pin of the chip U1 and the 5th pin of the dip switch T2; the first, second, third and fourth pins of the dip switch T2 are grounded.

4. The driving device of the electrified railway overhead contact network switch monitoring system according to claim 2, characterized in that: The YX input interface circuit includes a coupler O1, a coupler O2, a coupler O3, a coupler O4, a coupler O7 and a socket J3, all of which are of model TPL181; The first pin of the coupler O1 is respectively connected to the cathode of the diode D1 and one end of the resistor R14; the other end of the resistor R14 is respectively connected to one end of the capacitor C14 and one end of the resistor R13; the other end of the resistor R13 is connected to the anode of the voltage-stabilizing diode DW1; the cathode of the voltage-stabilizing diode DW1 is connected to the third pin of the power strip J3; the third pin of the coupler O1, the anode of the diode D1 and the other end of the capacitor C14 are all connected to the ground 24VGND2; the fourth pin of the coupler O1 is grounded; the sixth pin of the coupler O1 is respectively connected to the 29th pin of the chip U1, one end of the resistor R15 and the grounded capacitor C15; the other end of the resistor R15 is connected to the +3.3V voltage; The first pin of the coupler O2 is respectively connected to the cathode of the diode D2 and one end of the resistor R17; the other end of the resistor R17 is respectively connected to one end of the capacitor C16 and one end of the resistor R16; the other end of the resistor R16 is connected to the anode of the voltage-stabilizing diode DW2; the cathode of the voltage-stabilizing diode DW2 is connected to the fourth pin of the power strip J3; the third pin of the coupler O2, the anode of the diode D2 and the other end of the capacitor C16 are all connected to the ground 24VGND2; the fourth pin of the coupler O2 is grounded; the sixth pin of the coupler O2 is respectively connected to the 28th pin of the chip U1, one end of the resistor R18 and the grounded capacitor C17; the other end of the resistor R18 is connected to the +3.3V voltage; The first pin of the coupler O3 is respectively connected to the cathode of the diode D3 and one end of the resistor R20; the other end of the resistor R20 is respectively connected to one end of the capacitor C18 and one end of the resistor R19; the other end of the resistor R19 is connected to the anode of the voltage-stabilizing diode DW3; the cathode of the voltage-stabilizing diode DW3 is connected to the fifth pin of the power strip J3; the third pin of the coupler O3, the anode of the diode D3 and the other end of the capacitor C18 are all connected to the ground 24VGND2; the fourth pin of the coupler O3 is grounded; the sixth pin of the coupler O3 is respectively connected to the 27th pin of the chip U1, one end of the resistor R21 and the grounded capacitor C19; the other end of the resistor R21 is connected to the +3.3V voltage; The first pin of the coupler O5 is respectively connected to the cathode of the diode D5 and one end of the resistor R24; the other end of the resistor R24 ​​is respectively connected to one end of the capacitor C20 and one end of the resistor R23; the other end of the resistor R23 is connected to the anode of the voltage-stabilizing diode DW4; the cathode of the voltage-stabilizing diode DW4 is connected to the sixth pin of the power strip J3; the third pin of the coupler O5, the anode of the diode D5 and the other end of the capacitor C20 are all connected to the ground 24VGND2; the fourth pin of the coupler O5 is grounded; the sixth pin of the coupler O5 is respectively connected to the 26th pin of the chip U1, one end of the resistor R25 and the grounded capacitor C21; the other end of the resistor R25 is connected to the +3.3V voltage; The first pin of the coupler O7 is respectively connected to the cathode of the diode D8 and one end of the resistor R28; the other end of the resistor R28 is respectively connected to one end of the capacitor C22 and one end of the resistor R27; the other end of the resistor R27 is connected to the anode of the voltage-stabilizing diode DW5; the cathode of the voltage-stabilizing diode DW5 is respectively connected to the cathode of the diode D13 and +24VCN; the third pin of the coupler O7, the anode of the diode D8 and the other end of the capacitor C22 are all connected to the ground 24VGND2; the fourth pin of the coupler O7 is grounded; the sixth pin of the coupler O7 is respectively connected to the 14th pin of the chip U1, one end of the resistor R29 and the grounded capacitor C23; the other end of the resistor R29 is connected to the +3.3V voltage; The first pin of the socket J3 is connected to the positive electrode of the diode D12; the negative electrode of the diode D12 is connected to the +24V voltage; the second pin of the socket J3 is connected to the ground 24VGND1; the third pin of the socket J3 is also connected to the control closing input signal; the fourth pin of the socket J3 is also connected to the control opening input signal; the fifth pin of the socket J3 is also connected to the closing position signal; the sixth pin of the socket J3 is also connected to the opening position signal; the seventh pin of the socket J3 is connected to the positive electrode of the diode D13; the negative electrode of the diode D13 is also connected to the prohibition operation signal; the eighth pin of the socket J3 is connected to the ground 24VGND2.

5. The driving device of the electrified railway overhead contact network switch monitoring system according to claim 2, characterized in that: The YK output drive circuit includes chips U4 and U5, both of which are SN74LVC1G04DBVR, chip U6, which is SN74LVC139AD, and couplers O4, 06, 08, and 09, all of which are TLP127; the YK output drive circuit also includes relays RL1, RL2, and RL5, all of which are HF49FD, and relays RL3, RL4, RL6, and RL7, all of which are G2RL-1A4; The second pin of the chip U4 is connected to the third pin of the chip U1; the third pin of the chip U4 is grounded; the fifth pin of the U4 is connected to a +3.3V voltage; the fourth pin of the U4 is connected to the first pin of the chip U5; the second pin of the U5 is connected to the fifteenth pin of the chip U1; the third pin of the chip U5 is grounded; the fifth pin of the chip U5 is connected to a +3.3V voltage; the fourth pin of the chip U5, the first pin of the chip U6 and the fifteenth pin of the chip U6 are all connected to one end of the resistor R22; the second pin of the chip U6 The 32nd pin of the chip U1 is connected; the 3rd pin of the chip U6 is connected to the 31st pin of the chip U1; the 14th pin of the chip U6 is connected to the 23rd pin of the chip U1; the 13th pin of the chip U6 is connected to the 22nd pin of the chip U1; the 8th pin of the chip U6 is grounded; the 5th pin of the chip U6 is connected to one end of the resistor R26; the 6th pin of the chip U6 is connected to one end of the resistor R30; the 11th pin of the chip U6 is connected to one end of the resistor R31; the 16th pin of U6 is connected to the +3.3V voltage; The first pin of the coupler O4, the first pin of the coupler O6, the first pin of the coupler O8 and the first pin of the coupler O9 are all connected to the +3.3V voltage; the fourth pin of the coupler O4, the fourth pin of the coupler O6 and the fourth pin of the coupler O8 are all connected to the ground 24VGND1; the fourth pin of the coupler O9 is connected to the ground 24VGND2; The third pin of the coupler O4 is connected to the other end of the resistor R22; the sixth pin of the coupler O4 is respectively connected to the second pin of the relay RL1 and the positive electrode of the diode D4; the first pin of the relay RL1, the negative electrode of the diode D4 and the sixth contact of the relay RL1 are all connected to the +24V voltage; the eighth contact of the relay RL1 is connected to +24VCN; The third pin of the coupler O6 is connected to the other end of the resistor R26; the sixth pin of the coupler O6 is respectively connected to the first pin of the relay RL3 and the first pin of the relay RL4; the first pin of the relay RL3 is also connected to the positive electrode of the diode D6; the fifth pin of the relay RL3 and the negative electrode of the diode D6 are both connected to +24VCN; the third contact of the relay RL3 is connected to the first pin of the power strip J4; the fourth contact of the relay RL3 is connected to the second pin of the power strip J4; the first pin of the relay RL4 is also connected to the positive electrode of the diode D10; the fifth pin of the relay RL4 and the negative electrode of the diode D10 are both connected to +24VCN; the third contact of the relay RL4 is connected to the fifth pin of the power strip J4; the fourth contact of the relay RL4 is connected to the sixth pin of the power strip J4; The third pin of the coupler O8 is connected to the other end of the resistor R30; the sixth pin of the coupler O8 is respectively connected to the first pin of the relay RL6 and the first pin of the relay RL7; the first pin of the relay RL6 is also connected to the positive electrode of the diode D7; the fifth pin of the relay RL6 and the negative electrode of the diode D7 are both connected to +24VCN; the third contact of the relay RL6 is connected to the third pin of the power strip J4; the fourth contact of the relay RL6 is connected to the fourth pin of the power strip J4; the first pin of the relay RL7 is also connected to the positive electrode of the diode D11; the fifth pin of the relay RL7 and the negative electrode of the diode D11 are both connected to +24VCN; the third contact of the relay RL7 is connected to the seventh pin of the power strip J4; the fourth contact of the relay RL7 is connected to the eighth pin of the power strip J4; The third pin of the coupler O9 is connected to the other end of the resistor R31; the sixth pin of the coupler O9 is respectively connected to the second pin of the relay RL2 and the second pin of the relay RL5; the second pin of the relay RL2 is also connected to the positive electrode of the diode D9; the first pin of the relay RL2 and the negative electrode of the diode D9 are both connected to +24VCN; the sixth contact of the relay RL2 is connected to the first pin of the power strip J5; the eighth contact of the relay RL2 is connected to the second pin of the power strip J5; the first pin of the relay RL5 is connected to +24VCN; the sixth contact of the relay RL5 is connected to the third pin of the power strip J5; the eighth contact of the relay RL5 is connected to the fourth pin of the power strip J5.

6. The driving device of the electrified railway overhead contact network switch monitoring system according to claim 5, characterized in that: The state indication circuit includes a chip U7 of model SN74LVC07AD, a double-layer LED lamp LED1, a double-layer LED lamp LED2, and a double-layer LED lamp LED3; The first pin of the chip U7 is connected to the 10th pin of the chip U1; the third pin of the chip U7 is connected to the 5th pin of the chip U6; the 5th pin of the chip U7 is connected to the 6th pin of the chip U6; the 9th pin of the chip U7 is connected to the 11th pin of the chip U6; the 11th pin of the chip U7 is connected to the 14th pin of the chip U1; the 13th pin and the 7th pin of the chip U7 are grounded; the second pin of the chip U7 is connected to one end of the resistor R40; the other end of the resistor R40 is connected to the 4th pin of the double-layer LED lamp LED3; the first pin and the third pin of the double-layer LED lamp LED3 are both connected to the +3.3V voltage; the second pin of the double-layer LED lamp LED3 is connected to the grounding resistor R39; the 4th pin of the chip U7 is connected to one end of the resistor R34 ; The other end of the resistor R34 is connected to the second pin of the double-layer LED lamp LED1; the sixth pin of the chip U7 is connected to one end of the resistor R36; the other end of the resistor R36 is connected to the fourth pin of the double-layer LED lamp LED1; the first pin and the third pin of the double-layer LED lamp LED1 are both connected to the +3.3V voltage; the eighth pin of the chip U7 is connected to one end of the resistor R37; the other end of the resistor R37 is connected to the second pin of the double-layer LED lamp LED2; the tenth pin of the chip U7 is connected to one end of the resistor R38; the other end of the resistor R38 is connected to the fourth pin of the double-layer LED lamp LED2; the first pin and the third pin of the double-layer LED lamp LED2 are both connected to the +3.3V voltage; the fourteenth pin of the chip U7 is connected to the +3.3V voltage.

7. The driving device of the electrified railway overhead contact network switch monitoring system according to any one of claims 2 to 6, characterized in that: The power supply circuit includes an ACDC power supply PW1 of model IF2403LS-1WR3; The first pin of the power supply PW1 is respectively connected to one end of the inductor L1 and the positive electrode of the electrolytic capacitor E3; the other end of the inductor L1 is respectively connected to the positive electrode of the electrolytic capacitor E2 and one end of the fuse F1; the other end of the fuse F1 outputs a +24V voltage; the second pin of the power supply PW1 is respectively connected to the negative electrode of the electrolytic capacitor E2, the negative electrode of the electrolytic capacitor E3 and one end of the capacitor C13, and serves as the ground 24VGND1; the sixth pin of the power supply PW1 is respectively connected to the seventh pin of the power supply PW1 and the positive electrode of the electrolytic capacitor E1, and outputs a +3.3V voltage; the fifth pin of the power supply PW1 is respectively connected to the fourth pin of the power supply PW1, the other end of the capacitor C13 and the negative electrode of the electrolytic capacitor E1, and serves as a ground port.

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