Multi-channel dual-redundancy adjustable power supply control system

Abstract

The invention relates to a power supply driving system, in particular to a multi-channel dual-redundancy adjustable power supply control system, and solves the technical problem that the existing valve driver is difficult to meet the requirements of smaller volume, more channels, high reliability and capability of switching a plurality of driving power supplies. The multi-channel dual-redundancy adjustable power supply driver comprises a driving unit, m * n control channels and k * n timing system channels, the driving unit is used for providing external 24Vdc for the m * n control channels and the k * n timing system channels, respectively providing power supplies for the m * n electromagnetic valves through the m * n control channels, and respectively providing timing system signals for the k * n measurement and control equipment through the k * n timing system channels; the first I / O controller is used for controlling the on-off of the first dual-redundancy solid-state relay; the first dual-redundancy solid-state relay is used for controlling the on-off of the electromagnetic valve; the second I / O controller is used for controlling the on-off of the second dual-redundancy solid-state relay; and the second dual-redundancy solid-state relay is used for controlling the on-off of the measurement and control equipment.

Description

Technical Field

[0001] The present invention relates to a power supply driving system, and more particularly to a multi-channel dual-redundancy adjustable power supply control system. Background Art

[0002] The rocket engine test stand is designed with 192 control channels, which are respectively used for engine solenoid valve control, test system solenoid valve control, and time synchronization signal transmission. The required driving voltages for various solenoid valves are different. For example, the control voltage for engine solenoid valves is generally 28 ± 3 Vdc, the control voltages for solenoid valves in the test system are generally 24 ± 3 Vdc, 12 ± 1.5 Vdc, 5 ± 1 Vdc, and the time synchronization signals are generally passive signals and 5 Vdc signals.

[0003] However, the existing valve drivers are difficult to meet the requirements of small size, multiple channels, high reliability, and the ability to switch multiple driving power supplies. Summary of the Invention

[0004] The object of the present invention is to solve the technical problem that the existing valve drivers are difficult to meet the requirements of small size, multiple channels, high reliability, and the ability to switch multiple driving power supplies, and to provide a multi-channel dual-redundancy adjustable power supply driver.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A multi-channel dual-redundancy adjustable power supply control system, characterized in that it includes a driving unit, m×n control channels, and k×n time synchronization channels; m≥2, n≥2, k≥2;

[0007] The driving unit is used to connect an external 24 Vdc and multiple power supplies, provide the external 24 Vdc for the m×n control channels and the k×n time synchronization channels, and provide power supplies for m×n solenoid valves respectively through the m×n control channels, and provide time synchronization signals for k×n measurement and control devices respectively through the k×n time synchronization channels;

[0008] Each control channel includes a first I / O controller and a first dual-redundancy solid-state relay; the input end of the first I / O controller is used to receive a first I / O signal, and its output end is connected to the control end of the first dual-redundancy solid-state relay, and is used to control the on / off of the first dual-redundancy solid-state relay according to the input first I / O signal; the output end of the first dual-redundancy solid-state relay is connected to the control end of the corresponding solenoid valve, and is used to control the on / off of the solenoid valve;

[0009] Each time synchronization channel includes a second I / O controller and a second dual-redundancy solid-state relay; the output end of the second I / O controller is connected to the control end of the second dual-redundancy solid-state relay, and is used to control the on / off of the second dual-redundancy solid-state relay according to the input second I / O signal; the output end of the second dual-redundancy solid-state relay is connected to the control end of the corresponding measurement and control device, and is used to control the on / off of the measurement and control device.

[0010] Further, it also includes a motherboard;

[0011] The drive unit is arranged on the motherboard. The motherboard is used to connect to an external 24Vdc and multiple power supplies. The m×n control channels and the k×n time synchronization channels are respectively connected to the motherboard.

[0012] Further, it also includes n drive daughter boards and a first slot; the m×n control channels are respectively arranged on the n drive daughter boards, and each drive daughter board is provided with m control channels. The n drive daughter boards are connected to the motherboard through the first slot and are used to input an external 24Vdc and multiple power supplies; a power supply switching circuit is arranged on the drive daughter board and is used to select the corresponding power supply according to the type of the solenoid valve to enter the corresponding control channel.

[0013] Further, it also includes a second slot; the drive unit is connected to an external 24Vdc and multiple power supplies through the second slot.

[0014] Further, it also includes n time synchronization daughter boards and a third slot; the k×n time synchronization channels are respectively arranged on the n time synchronization daughter boards, and each time synchronization daughter board is provided with k time synchronization channels. The n time synchronization daughter boards are connected to the motherboard through the third slot and are used to input an external 24Vdc.

[0015] Further, the power supply includes 28±3Vdc, 24±3Vdc, 12±1.5Vdc, and / or 5±1Vdc.

[0016] Further, the output power supply voltages of the m channels of each drive daughter board are the same.

[0017] Further, the first dual-redundancy solid-state relay includes a housing, a first solid-state relay and a second solid-state relay arranged in the housing, a 24V wiring terminal, a PW+ wiring terminal, a PW_GND wiring terminal, a PW_OUT wiring terminal, and an NI9477 wiring terminal arranged on the housing;

[0018] The first solid-state relay includes a first SSR unit and a first switch; the second solid-state relay includes a second SSR unit and a second switch; the input terminal of the first SSR unit is connected to the 24V terminal, and its output terminal is connected to the NI9477 terminal; one end of the first switch is connected to the PW+ terminal, and the other end is connected to the PW_OUT terminal; the input terminal of the second SSR unit is connected to the 24V terminal, and its output terminal is connected to the NI9477 terminal; one end of the second switch is connected to the PW+ terminal, and the other end is connected to the PW_OUT terminal;

[0019] The 24V terminal is used to connect the external 24Vdc positive pole;

[0020] The PW+ terminal is used to connect the positive pole of the power supply;

[0021] The NI9477 terminal serves as the control terminal of the first dual-redundant solid-state relay and is used to connect the DO terminal of the first I / O controller;

[0022] The PW_OUT terminal serves as the output terminal of the first dual-redundant solid-state relay and is connected to the high-end control of the solenoid valve, and the PW_GND terminal is used to connect the low-end control of the solenoid valve, and the PW_GND terminal is grounded;

[0023] The structure of the second dual-redundant solid-state relay is the same as that of the first dual-redundant solid-state relay; the 24V terminal of the second dual-redundant solid-state relay is used to connect a passive signal or a 5Vdc timekeeping signal; the NI9477 terminal serves as the control terminal of the second dual-redundant solid-state relay and is used to connect the DO terminal of the second I / O controller; the PW_OUT terminal serves as the output terminal of the second dual-redundant solid-state relay and is connected to the high-end control of the measurement and control device, and the PW_GND terminal is connected to the low-end control of the measurement and control device, and the PW_GND terminal is grounded.

[0024] Further, each control channel further includes a pressure relief circuit; the pressure relief circuit includes a reverse diode and a resistor;

[0025] The negative poles of the reverse diodes are respectively connected to the PW_OUT terminals of the corresponding first dual-redundant solid-state relay or second dual-redundant solid-state relay, the positive poles of the reverse diodes are connected to one end of the resistors; the other ends of the resistors are connected to the PW_GND terminals.

[0026] Further, m = 32, n = 12, k = 8; the resistance value of the resistor is 20Ω; both the first slot and the third slot adopt CPCI type slots; the second slot adopts a J30J-38 type slot or a J30J-9 type slot; the first solid-state relay and the second solid-state relay are metal shell-sealed DC solid-state relays.

[0027] Advantages of the present invention:

[0028] 1. A multi-channel dual-redundant adjustable power supply control system of the present invention uses a drive unit, a time synchronization unit, and m×n control channels to control n solenoid valves respectively, and uses I / O signals to control the on / off of the first dual-redundant solid-state relay, providing multiple power supplies and time synchronization signals for different solenoid valves, and solving the technical problems that valve drivers are difficult to meet the requirements of small volume, large number of channels, high reliability, and multiple switchable drive power supplies.

[0029] 2. In a multi-channel dual-redundant adjustable power supply control system of the present invention, the power supply sub-board for drive output, the drive sub-board, and the time synchronization sub-board are all connected to the template through slots, reducing the volume of the multi-channel dual-redundant adjustable power supply control system.

[0030] 3. In a multi-channel dual-redundant adjustable power supply control system of the present invention, in order to prevent a certain solid-state relay from being damaged and causing the out-of-control of the channel, two solid-state relays (i.e., the first solid-state relay and the second solid-state relay) are set in the original control circuit to achieve the purpose of redundant backup of key components.

[0031] 4. In a multi-channel dual-redundant adjustable power supply control system of the present invention, the first solid-state relay and the second solid-state relay are selected as metal shell-sealed DC solid-state relays, which have high reliability and good heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic structural diagram of an embodiment of a multi-channel dual-redundant adjustable power supply control system of the present invention;

[0033] Figure 2 is a schematic structural diagram of the first dual-redundant solid-state relay in an embodiment of a multi-channel dual-redundant adjustable power supply control system of the present invention.

[0034] DESCRIPTION OF THE REFERENCE NUMERALS:

[0035] 1 - Solenoid valve, 2 - First I / O controller, 31 - First SSR unit, 32 - First switch, 33 - Second SSR unit, 34 - Second switch. DETAILED DESCRIPTION OF THE INVENTION

[0036] As Figure 1As shown in the figure, a multi-channel dual-redundancy adjustable power supply control system. 1. A multi-channel dual-redundancy adjustable power supply control system, characterized in that it includes a motherboard, n drive daughter boards, a first slot, a second slot, n time synchronization daughter boards, a third slot, a drive unit, m×n control channels, and k×n time synchronization channels; m≥2, n≥2, k≥2; the drive unit is used to connect to an external 24Vdc and multiple power supplies, provide external 24Vdc for the m×n control channels and k×n time synchronization channels, and supply power supplies to m×n solenoid valves 1 respectively through the m×n control channels, and supply time synchronization signals to k×n measurement and control devices respectively through the k×n time synchronization channels.

[0037] Each control channel includes a first I / O controller 2 and a first dual-redundancy solid-state relay; the input end of the first I / O controller 2 is used to receive the first I / O signal, and its output end is connected to the control end of the first dual-redundancy solid-state relay, and is used to control the on and off of the first dual-redundancy solid-state relay according to the input first I / O signal; the output end of the first dual-redundancy solid-state relay is connected to the control end of the corresponding solenoid valve 1, and is used to control the on and off of the solenoid valve 1; each time synchronization channel includes a second I / O controller and a second dual-redundancy solid-state relay; the output end of the second I / O controller is connected to the control end of the second dual-redundancy solid-state relay, and is used to control the on and off of the second dual-redundancy solid-state relay according to the input second I / O signal; the output end of the second dual-redundancy solid-state relay is connected to the control end of the corresponding measurement and control device, and is used to control the on and off of the measurement and control device.

[0038] In this embodiment, the drive unit is arranged on the motherboard. The motherboard is used to connect to an external 24Vdc and multiple power supplies, and the m×n control channels and k×n time synchronization channels are respectively connected to the motherboard. The m×n control channels are respectively arranged on n drive daughter boards, each drive daughter board is provided with m control channels, and the n drive daughter boards are connected to the motherboard through the first slot, and are used to input external 24Vdc and multiple power supplies; a power supply switching circuit is arranged on the drive daughter board, and is used to select the corresponding power supply according to the type of the solenoid valve 1 and enter the corresponding control channel.

[0039] The drive unit is connected to an external 24Vdc and multiple power supplies through the second slot. The k×n time synchronization channels are respectively arranged on n time synchronization daughter boards, each time synchronization daughter board is provided with k time synchronization channels, and the n time synchronization daughter boards are connected to the motherboard through the third slot, and are used to input external 24Vdc. The power supplies include 28±3Vdc, 24±3Vdc, 12±1.5Vdc, and / or 5±1Vdc. The output power supply voltages of the m channels of each drive daughter board are the same.

[0040] As Figure 2As shown in the figure, the first dual-redundant solid-state relay includes a housing, a first solid-state relay and a second solid-state relay disposed within the housing, a 24V terminal, a PW+ terminal, a PW_GND terminal, a PW_OUT terminal, and an NI9477 terminal disposed on the housing; the first solid-state relay includes a first SSR unit 31 and a first switch 33; the second solid-state relay includes a second SSR unit 32 and a second switch 34; the input terminal of the first SSR unit 31 is connected to the 24V terminal, and its output terminal is connected to the NI9477 terminal; one end of the first switch 33 is connected to the PW+ terminal, and the other end is connected to the PW_OUT terminal; the input terminal of the second SSR unit 32 is connected to the 24V terminal, and its output terminal is connected to the NI9477 terminal; one end of the second switch 34 is connected to the PW+ terminal, and the other end is connected to the PW_OUT terminal; the 24V terminal is used to connect the external 24Vdc positive electrode; the PW+ terminal is used to connect the positive electrode of the power supply; the NI9477 terminal serves as the control terminal of the first dual-redundant solid-state relay and is used to connect the DO terminal of the first I / O controller 2; the PW_OUT terminal serves as the output terminal of the first dual-redundant solid-state relay and is connected to the control high end of the solenoid valve 1, and the PW_GND terminal is used to connect the control low end of the solenoid valve 1, and the PW_GND terminal is grounded.

[0041] The structure of the second dual-redundant solid-state relay is the same as that of the first dual-redundant solid-state relay; the 24V terminal of the second dual-redundant solid-state relay is used to connect a passive signal or a 5Vdc timekeeping signal; the NI9477 terminal serves as the control terminal of the second dual-redundant solid-state relay and is used to connect the DO terminal of the second I / O controller; the PW_OUT terminal serves as the output terminal of the second dual-redundant solid-state relay and is connected to the control high end of the measurement and control device, and the PW_GND terminal is connected to the control low end of the measurement and control device, and the PW_GND terminal is grounded.

[0042] Each control channel further includes a pressure relief circuit; the pressure relief circuit includes a reverse diode and a resistor; the negative electrode of the reverse diode is respectively connected to the PW_OUT terminal of the corresponding first dual-redundant solid-state relay or the second dual-redundant solid-state relay, and the positive electrode of the reverse diode is connected to one end of the resistor; the other end of the resistor is connected to the PW_GND terminal, and the resistance value of the resistor is 20Ω;

[0043] m = 32, n = 12, k = 8; The motherboard is used to connect to an external 24Vdc power supply to provide 24Vdc power supply for each daughter board, and realizes the conversion of the I / O signal input of the controller 2 into a 24Vdc signal to drive the first solid-state relay and the second solid-state relay. The drive output power supply daughter board is used to connect to 4 external DC regulated power supplies (PW1 - 4), and the DC regulated power supplies are used to provide the voltage output to the solenoid valve 1, so that the system of the present invention can output four different voltages simultaneously; Each drive daughter board contains 32 control channels [(SSR1-1, SSR1-2)…(SSR32-1, SSR32-2)], and the 32 control channels are used to convert the I / O signal of the controller 2 into the voltage output required to drive the solenoid valve 1; Each time synchronization daughter board contains 4 passive time synchronization signals (DC-DcConvert24V) and 4 5Vdc time synchronization signals (DC-DcConvert5V); The 4 passive time synchronization signals are used to convert the I / O signal of the second I / O controller 2 into a passive signal output and provide it to other measurement and control devices; The 4 5Vdc time synchronization signals are used to convert the I / O signal of the second I / O controller 2 into a 5Vdc time synchronization signal and provide it to other measurement and control devices.

[0044] The first solid-state relay and the second solid-state relay are selected as metal shell sealed DC solid-state relays, which have high reliability and good heat dissipation. In order to prevent a certain solid-state relay from being damaged and causing the out-of-control of the channel, two solid-state relays (i.e., the first solid-state relay and the second solid-state relay) are set in the original control circuit to achieve the purpose of redundant backup of key components. The first slot and the third slot both adopt CPCI type slots; The second slot adopts a J30J-38 type slot or a J30J-9 type slot; The above slots are all vacuum slots and have high stability.

Claims

1. A multi-channel dual-redundant adjustable power supply control system, characterized in that: It includes a driving unit, m×n control channels and k×n timing channels; m≥2, n≥2, k≥2; The drive unit is used to connect an external 24Vdc and multiple power supplies, provide external 24Vdc for m×n control channels and k×n timing channels, and respectively provide power supplies to m×n solenoid valves (1) through the m×n control channels, and respectively provide timing signals to k×n measurement and control devices through the k×n timing channels; Each control channel comprises a first I / O controller (2) and a first dual-redundant solid-state relay; the input end of the first I / O controller (2) is used to receive a first I / O signal, and the output end thereof is connected to the control end of the first dual-redundant solid-state relay, and is used to control the on-off of the first dual-redundant solid-state relay according to the input first I / O signal; the output end of the first dual-redundant solid-state relay is connected to the control end of the corresponding solenoid valve (1), and is used to control the on-off of the solenoid valve (1); Each timing channel includes a second I / O controller and a second dual-redundant solid-state relay; the output end of the second I / O controller is connected to the control end of the second dual-redundant solid-state relay, which is used to control the on and off of the second dual-redundant solid-state relay according to the input second I / O signal; the output end of the second dual-redundant solid-state relay is connected to the control end of the corresponding measurement and control equipment, which is used to control the on and off of the measurement and control equipment.

2. According to claim 1, a multi-channel dual-redundant adjustable power supply control system is characterized in that: Also included is the motherboard; The driving unit is arranged on a motherboard, and the motherboard is used to connect an external 24Vdc and various power supplies. The m×n control channels and the k×n timing channels are respectively connected to the motherboard.

3. According to claim 2, a multi-channel dual-redundant adjustable power supply control system is characterized in that: Also includes n driver sub-boards and a first slot; The m×n control channels are respectively arranged on n driver sub-boards, each driver sub-board is provided with m control channels, and the n driver sub-boards are connected to the motherboard through the first slot for inputting external 24Vdc and various power supplies; The driving sub-board is provided with a power switching circuit for selecting a corresponding power source to enter a corresponding control channel according to the type of the solenoid valve (1).

4. According to claim 3, a multi-channel dual-redundant adjustable power supply control system is characterized in that: Also included is a second slot; The drive unit is connected to an external 24Vdc and various power sources through a second slot.

5. A multi-channel dual-redundant adjustable power supply control system according to claim 4, characterized in that: Also includes n timing daughter boards and a third slot; The k×n timing channels are respectively arranged on n timing daughter boards, each timing daughter board is provided with k timing channels, and the n timing daughter boards are connected to the mother board through the third slot for inputting external 24Vdc.

6. The multi-channel dual-redundant adjustable power supply control system according to claim 5, characterized in that: The power supply includes 28±3Vdc, 24±3Vdc, 12±1.5Vdc and / or 5±1Vdc.

7. A multi-channel dual-redundant adjustable power supply control system according to claim 6, characterized in that: The m channels of each driver sub-board have the same output power supply voltage.

8. A multi-channel dual-redundant adjustable power supply control system according to any one of claims 5 to 7, characterized in that: The first dual redundant solid-state relay comprises a housing, a first solid-state relay and a second solid-state relay arranged in the housing, a 24V terminal, a PW+ terminal, a PW_GND terminal, a PW_OUT terminal and a NI9477 terminal arranged on the housing; The first solid-state relay comprises a first SSR unit (31) and a first switch (33); the second solid-state relay comprises a second SSR unit (32) and a second switch (34); the input end of the first SSR unit (31) is connected to the 24V terminal, and the output end thereof is connected to the NI9477 terminal; one end of the first switch (33) is connected to the PW+ terminal, and the other end is connected to the PW_OUT terminal; the input end of the second SSR unit (32) is connected to the 24V terminal, and the output end thereof is connected to the NI9477 terminal; one end of the second switch (34) is connected to the PW+ terminal, and the other end is connected to the PW_OUT terminal; The 24V terminal is used to connect the external 24Vdc positive electrode; The PW+ terminal is used to connect the positive electrode of the power supply; The NI9477 terminal is used as a control terminal of the first dual-redundant solid-state relay and is used to connect to the DO terminal of the first I / O controller (2); The PW_OUT terminal is connected to the control high end of the solenoid valve (1) as the output end of the first dual-redundant solid-state relay, and the PW_GND terminal is used to connect to the control low end of the solenoid valve (1), and the PW_GND terminal is grounded; The structure of the second dual redundant solid-state relay is the same as that of the first dual redundant solid-state relay; the 24V terminal of the second dual redundant solid-state relay is used to connect a passive signal or a 5Vdc timing signal; the NI9477 terminal serves as the control terminal of the second dual redundant solid-state relay and is used to connect to the DO terminal of the second I / O controller; the PW_OUT terminal serves as the output terminal of the second dual redundant solid-state relay and is connected to the control high end of the measurement and control equipment, the PW_GND terminal is connected to the control low end of the measurement and control equipment, and the PW_GND terminal is grounded.

9. A multi-channel dual-redundant adjustable power supply control system according to claim 8, characterized in that: Each control channel also includes a pressure relief circuit; the pressure relief circuit includes a reverse diode and a resistor; The cathode of the reverse diode is connected to the PW_OUT terminal of the corresponding first dual-redundant solid-state relay or the second dual-redundant solid-state relay, and the anode of the reverse diode is connected to one end of the resistor; The other end of the resistor is connected to the PW_GND terminal.

10. The multi-channel dual-redundant adjustable power supply control system according to claim 9, characterized in that: m=32, n=12, k=8; The resistance value of the resistor is 20Ω; The first slot and the third slot are both CPCI type slots; The second slot is a J30J-38 slot or a J30J-9 slot; The first solid-state relay and the second solid-state relay are metal-shell sealed DC solid-state relays.

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