Programmable discrete magnitude output card

Abstract

The utility model discloses a programmable discrete magnitude output card, which relates to the technical field of discrete magnitude output control, and comprises a main control module, a power supply conversion module and a discrete magnitude output module, the power supply conversion module is connected with the main control module and is used for supplying power to the main control module; the discrete magnitude output module comprises a plurality of discrete magnitude output branches; and the main control module is connected with the plurality of discrete magnitude output branches and is used for controlling the output state of each discrete magnitude output branch. The programmable discrete magnitude output card provided by the utility model can realize multi-path configurable discrete magnitude output, and meets the output requirements of various discrete magnitudes so as to adapt to various applications.

Description

Technical Field

[0001] This utility model relates to the field of discrete output control technology, and in particular to a programmable discrete output card. Background Technology

[0002] Discrete quantities are often used in electromechanical systems to indicate the status of electromechanical equipment and control switching actions. In some applications, discrete quantity output devices need to switch between multiple output types to meet control requirements. However, current discrete quantity output devices that can freely configure output types require complex hardware and cannot flexibly switch the output state of discrete quantities. Utility Model Content

[0003] In response to the above-mentioned problems and technical requirements, the inventors have proposed a programmable discrete output card.

[0004] The technical solution of this utility model is as follows:

[0005] A programmable discrete output card includes a main control module, a power conversion module, and a discrete output module, wherein...

[0006] The power conversion module is connected to the main control module and is used to supply power to the main control module; the discrete output module includes multiple discrete output branches; the main control module is connected to the multiple discrete output branches and is used to control the output state of each discrete output branch.

[0007] A further technical solution is that the discrete output branch includes a first solid-state relay, a second solid-state relay, a resistor R1, and a resistor R2, wherein the first solid-state relay and the second solid-state relay are both AQY212GSZ.

[0008] The first terminal of the first solid-state relay is connected to the main control module through resistor R1, and the second terminal of the first solid-state relay is grounded; the third terminal of the first solid-state relay is connected to the third terminal of the second solid-state relay; the fourth terminal of the first solid-state relay is connected to an adjustable power supply voltage.

[0009] The first terminal of the second solid-state relay is connected to the main control module through resistor R2, the second terminal of the first solid-state relay is grounded, and the fourth terminal of the second solid-state relay is connected to the first fixed power supply voltage.

[0010] A further technical solution is that the discrete output branch further includes a first driving circuit, which includes diode D1, resistors R3, R4, R5, R6, R7, and switching transistors Q1, Q2, Q3, Q4, and Q5.

[0011] The main control module is connected to the third electrode of the switching transistor Q1 and the second electrode of the switching transistor Q2 through resistor R3. The cathode of the diode D1 is connected to one end of resistor R3, and the anode of the diode D1 and the first electrode of the switching transistor Q1 are grounded.

[0012] The third electrode of the switching transistor Q2 is connected to the second electrode of the switching transistor Q1 and grounded through resistor R4. The first electrode of the switching transistor Q2 is connected to a second fixed power supply voltage through resistor R5.

[0013] A further technical solution is that the second electrode of the switching transistor Q3 is connected to the first electrode of the switching transistor Q2, the third electrode of the switching transistor Q3 is connected to the second electrode of the switching transistor Q4 and one end of the resistor R6, the other end of the resistor R6 is connected to the first electrode of the switching transistor Q4, the second electrode of the switching transistor Q5 and one end of the resistor R7, the other end of the resistor R7 is connected to the cathode of the diode D2 and the first electrode of the switching transistor Q5 to form the output terminal of the first driving circuit, the anode of the diode D2 is grounded, and the third electrode of the switching transistor Q5 is connected to a second fixed power supply voltage.

[0014] A further technical solution is that the discrete output branch further includes a second driving circuit, which includes switching transistors Q6 and Q7, diodes D3, D4, and D5, resistors R8, R9, and R10, and a TVS diode D6.

[0015] The main control module is connected to the second electrode of the switching transistor Q6 through resistor R8. The second electrode of the switching transistor Q6 is connected to one end of resistor R9. The other end of resistor R9 is connected to the first electrode of the switching transistor Q6 and one end of resistor R10. The other end of resistor R10 is connected to the first electrode of the switching transistor Q7 and the anode of diode D3 and grounded. The cathode of diode D3 is connected to the main control module.

[0016] The second electrode of the switching transistor Q7 is connected to the first electrode of the switching transistor Q6. The third electrode of the switching transistor Q7 is connected to the cathode of diode D4 and the anode of diode D5 to form the output terminal of the second driving circuit. The anode of diode D4 is grounded, the cathode of diode D5 is connected to the anode of TVS transistor D6, and the cathode of TVS transistor D6 is connected to the second fixed power supply voltage.

[0017] A further technical solution is that the switching transistors Q1, Q2, Q3, Q4, Q5, Q6 and Q7 are transistors.

[0018] A further technical solution is that the discrete output branch also includes a fuse, and the third terminal of the first solid-state relay, the third terminal of the second solid-state relay, the output terminal of the first driving circuit, and the output terminal of the second driving circuit in the discrete output branch are interconnected and connected to one end of the fuse.

[0019] A further technical solution is that the main control module includes a CPCI bridge chip, an FPGA chip, and several driver chips. The CPCI bridge chip is connected to the FPGA chip, the FPGA is connected to several driver chips, and the driver chips are connected to the discrete output branch.

[0020] A further technical solution is that the main control module also includes multiple isolated transceivers, which are connected between the FPGA chip and the discrete output module.

[0021] A further technical solution is that the power conversion module includes multiple power conversion chips.

[0022] The beneficial technical effects of this utility model are:

[0023] The programmable discrete output card provided by this utility model can realize the output of multiple configurable discrete quantities. That is, the output state of each discrete output branch can be controlled by the main control module, so that each discrete output branch can freely switch between five output modes to meet the output requirements of the required discrete quantities and adapt to various applications. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the framework of one embodiment of the programmable discrete output card provided by this utility model.

[0025] Figure 2 This is a schematic diagram of one embodiment of the discrete quantity module provided by this utility model.

[0026] Figure 3 This is a schematic diagram showing the connection between the first solid-state relay and the second solid-state relay in one embodiment of this utility model.

[0027] Figure 4 This is a circuit schematic diagram of one embodiment of the first driving circuit provided by this utility model.

[0028] Figure 5 This is a circuit diagram of one embodiment of the second driving circuit provided by this utility model. Detailed Implementation

[0029] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0030] This utility model provides a programmable discrete output card, including a main control module, a power conversion module, and a discrete output module, wherein...

[0031] The power conversion module is connected to the main control module and is used to supply power to the main control module; the discrete output module includes multiple discrete output branches; the main control module is connected to the multiple discrete output branches and is used to control the output state of each discrete output branch.

[0032] Specifically, such as Figure 2 As shown, programmable discrete output cards are typically integrated into discrete quantity modules along with signal relay boards. Each discrete output branch in the programmable discrete output card includes five output modes: adjustable voltage mode, first fixed voltage mode, second fixed voltage mode, ground mode, and floating mode, corresponding to outputting adjustable voltage, first fixed voltage, second fixed voltage, ground potential, and floating state, respectively. The main control module can control the discrete output branches to switch between these five output modes, thus providing discrete quantities in five states. In this embodiment, a total of 56 discrete output branches are provided.

[0033] The main control module includes a CPCI bridge chip, an FPGA chip, and several driver chips. The CPCI bridge chip is connected to the FPGA chip, the FPGA chip is connected to the driver chips, and the driver chips are connected to discrete output branches. The CPCI bridge chip receives PCI bus signals through a connector. The PCI bus signals are output to the FPGA chip for processing via the CPCI bridge chip. The FPGA chip controls the discrete output branches through the driver chips. In this embodiment, the FPGA chip is a Xilinx XC7A75T-2FGG484I, which has abundant built-in Block RAM resources and 75,520 logic units. The CPCI bridge chip is a CH365, a 32-bit PCI bus interface chip. The driver chip is an SN74HC573APWR, which has multiple signal output pins. Every four signal output pins of the driver chip are adapted and connected to one discrete output branch. The FPGA chip is also connected to a JTAG interface, a FLASH chip, and a clock chip for providing a clock reference.

[0034] The FPGA chip is also connected to a 485 isolated transceiver, which is connected to an RS485 bus for communication with other devices. The main control module also includes multiple isolated transceivers connected between the FPGA chip and the discrete output module. The specific connection configuration can be the same as in existing technologies, used for electrical isolation. The power conversion chip includes multiple power conversion chips. These multiple power conversion chips are connected to the FPGA chip, CPCI bridge chip, and driver chip, respectively, converting the power supply voltage to the operating voltage required by the corresponding chip to power it.

[0035] The following describes the structure of a discrete output branch using one discrete output branch as an example. The discrete output branch includes a first solid-state relay, a second solid-state relay, a resistor R1, and a resistor R2. The first solid-state relay and the second solid-state relay are both model AQY212GSZ.

[0036] The first terminal of the first solid-state relay is connected to the main control module through resistor R1, and the second terminal of the first solid-state relay is grounded; the third terminal of the first solid-state relay is connected to the third terminal of the second solid-state relay; the fourth terminal of the first solid-state relay is connected to an adjustable power supply voltage.

[0037] The first terminal of the second solid-state relay is connected to the main control module through resistor R2, the second terminal of the first solid-state relay is grounded, and the fourth terminal of the second solid-state relay is connected to the first fixed power supply voltage.

[0038] Specifically, such as Figure 3 As shown, the first terminal of the first solid-state relay K1 is connected to the first signal output pin (CH0_A pin) of the driver chip through resistor R1, and the first terminal of the second solid-state relay K2 is connected to the second signal output pin (CH0_B pin) of the driver chip through resistor R2. The first fixed power supply voltage is 5V. When the CH0_A pin outputs a high level to the first terminal of the first solid-state relay K1, the third terminal of the first solid-state relay K1 outputs an adjustable voltage. When the CH0_B pin outputs a high level to the first terminal of the second solid-state relay K2, the third terminal of the second solid-state relay K2 outputs a first fixed voltage (5V).

[0039] Furthermore, the discrete output branch also includes a first driving circuit, which comprises diode D1, resistors R3, R4, R5, R6, and R7, and switching transistors Q1, Q2, Q3, Q4, and Q5.

[0040] like Figure 4As shown, the main control module is connected to the third electrode of switching transistor Q1 and the second electrode of switching transistor Q2 through resistor R3. The cathode of diode D1 is connected to one end of resistor R3, and the anode of diode D1 and the first electrode of switching transistor Q1 are grounded. The third electrode of switching transistor Q2 is connected to the second electrode of switching transistor Q1 and grounded through resistor R4. The first electrode of switching transistor Q2 is connected to a second fixed power supply voltage through resistor R5. The second electrode of switching transistor Q3 is connected to the first electrode of switching transistor Q2. The third electrode of switching transistor Q3 is connected to the second electrode of switching transistor Q4 and one end of resistor R6. The other end of resistor R6 is connected to the first electrode of switching transistor Q4, the second electrode of switching transistor Q5, and one end of resistor R7. The other end of resistor R7 is connected to the cathode of diode D2 and the first electrode of switching transistor Q5 to form the output terminal of the first drive circuit. The anode of diode D2 is grounded, and the third electrode of switching transistor Q5 is connected to the second fixed power supply voltage.

[0041] Specifically, the third signal output pin (CH0_C pin) of the driver chip is connected to the second electrode of the switching transistor Q2 through resistor R3, and the second fixed power supply voltage is 28V. In this embodiment, switching transistors Q1, Q4, and Q5 are NPN transistors, and switching transistors Q2 and Q3 are PNP transistors. For each transistor, the first electrode is the emitter, the second electrode is the base, and the third electrode is the collector. When the CH0_C pin outputs a high level to the second electrode of switching transistor Q2, switching transistor Q2 turns on, thereby pulling the base potential of switching transistor Q3 down to ground, turning on switching transistor Q3, and thus applying the second fixed power supply voltage to the bases of switching transistors Q4 and Q5, turning on both switching transistors Q4 and Q5. The output terminal of the first driver circuit outputs the second fixed power supply voltage (28V). The first driver circuit can also use a source driver chip of model A2982SLWTR-T.

[0042] Furthermore, the discrete output branch also includes a second driving circuit, which includes switching transistors Q6 and Q7, diodes D3, D4, and D5, resistors R8, R9, and R10, and a TVS diode D6.

[0043] The main control module is connected to the second electrode of the switching transistor Q6 through resistor R8. The second electrode of the switching transistor Q6 is connected to one end of resistor R9. The other end of resistor R9 is connected to the first electrode of the switching transistor Q6 and one end of resistor R10. The other end of resistor R10 is connected to the first electrode of the switching transistor Q7 and the anode of diode D3 and grounded. The cathode of diode D3 is connected to the main control module.

[0044] The second electrode of the switching transistor Q7 is connected to the first electrode of the switching transistor Q6. The third electrode of the switching transistor Q7 is connected to the cathode of diode D4 and the anode of diode D5 to form the output terminal of the second driving circuit. The anode of diode D4 is grounded, the cathode of diode D5 is connected to the anode of TVS transistor D6, and the cathode of TVS transistor D6 is connected to the second fixed power supply voltage.

[0045] Specifically, the fourth signal output pin (CH0_D pin) of the driver chip is connected to the second electrode of the switching transistor Q6 through resistor R8. In this embodiment, switching transistors Q6 and Q7 are NPN transistors. The definitions of the first, second, and third electrodes of switching transistors Q6 and Q7 are the same as those for transistors described above, and will not be repeated here. When the CH0_D pin outputs a high level to the second electrode of switching transistor Q6, switching transistors Q6 and Q7 are turned on, thereby pulling the output voltage of the second driver circuit down to ground potential. The second driver circuit can also use a drain driver chip of model ULN2803ADWR.

[0046] The discrete output branch also includes a fuse. The third terminal of the first solid-state relay, the third terminal of the second solid-state relay, the output terminal of the first drive circuit, and the output terminal of the second drive circuit are interconnected and connected to one end of the fuse. The other end of the fuse is connected to the output connector. That is, the output of any discrete output branch is output to the output connector after being protected by the fuse, and is output through the output connector.

[0047] As explained above, when the signal output pin of the driver chip connected to the corresponding circuit outputs a high level, the discrete output branch can be controlled to output discrete quantities in different states. Specifically, when the CHO_A pin is high, the discrete output branch outputs an adjustable voltage; when the CHO_B pin is high, the discrete output branch outputs 5V; when the CHO_C pin is high, the discrete output branch outputs 28V; and when the CHO_D pin is high, the discrete output branch outputs ground potential GND. When the CHO_A, CHO_B, CHO_C, and CHO_D pins are all low, the output of the discrete output branch is in a floating state. It should be noted that when configuring the driver chip pin states, only one of the CHO_A, CHO_B, CHO_C, and CHO_D pins can output a high level at any given time to avoid conflicts between high-voltage discrete outputs and ground-potential discrete outputs.

[0048] The above descriptions are merely preferred embodiments of the present invention, and the present invention is not limited to the above embodiments. It is understood that other improvements and variations that can be directly derived or conceived by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included within the protection scope of the present invention.

Claims

1. A programmable discrete output card, characterized in that, It includes a main control module, a power conversion module, and a discrete output module, among which, The power conversion module is connected to the main control module and is used to supply power to the main control module; the discrete output module includes multiple discrete output branches; the main control module is connected to the multiple discrete output branches and is used to control the output state of each discrete output branch.

2. The programmable discrete output card according to claim 1, characterized in that, The discrete output branch includes a first solid-state relay, a second solid-state relay, a resistor R1, and a resistor R2. The first solid-state relay and the second solid-state relay are both model AQY212GSZ. The first terminal of the first solid-state relay is connected to the main control module through resistor R1, and the second terminal of the first solid-state relay is grounded; the third terminal of the first solid-state relay is connected to the third terminal of the second solid-state relay; the fourth terminal of the first solid-state relay is connected to an adjustable power supply voltage. The first terminal of the second solid-state relay is connected to the main control module through resistor R2, the second terminal of the first solid-state relay is grounded, and the fourth terminal of the second solid-state relay is connected to the first fixed power supply voltage.

3. The programmable discrete output card according to claim 2, characterized in that, The discrete output branch further includes a first driving circuit, which comprises diode D1, resistors R3, R4, R5, R6, and R7, and switching transistors Q1, Q2, Q3, Q4, and Q5. The main control module is connected to the third electrode of the switching transistor Q1 and the second electrode of the switching transistor Q2 through resistor R3. The cathode of the diode D1 is connected to one end of resistor R3, and the anode of the diode D1 and the first electrode of the switching transistor Q1 are grounded. The third electrode of the switching transistor Q2 is connected to the second electrode of the switching transistor Q1 and grounded through resistor R4. The first electrode of the switching transistor Q2 is connected to a second fixed power supply voltage through resistor R5.

4. The programmable discrete output card according to claim 3, characterized in that, The second electrode of the switching transistor Q3 is connected to the first electrode of the switching transistor Q2. The third electrode of the switching transistor Q3 is connected to the second electrode of the switching transistor Q4 and one end of the resistor R6. The other end of the resistor R6 is connected to the first electrode of the switching transistor Q4, the second electrode of the switching transistor Q5, and one end of the resistor R7. The other end of the resistor R7 is connected to the cathode of the diode D2 and the first electrode of the switching transistor Q5 to form the output terminal of the first driving circuit. The anode of the diode D2 is grounded. The third electrode of the switching transistor Q5 is connected to a second fixed power supply voltage.

5. The programmable discrete output card according to claim 4, characterized in that, The discrete output branch further includes a second driving circuit, which includes switching transistors Q6 and Q7, diodes D3, D4, and D5, resistors R8, R9, and R10, and a TVS diode D6. The main control module is connected to the second electrode of the switching transistor Q6 through resistor R8. The second electrode of the switching transistor Q6 is connected to one end of resistor R9. The other end of resistor R9 is connected to the first electrode of the switching transistor Q6 and one end of resistor R10. The other end of resistor R10 is connected to the first electrode of the switching transistor Q7 and the anode of diode D3 and grounded. The cathode of diode D3 is connected to the main control module. The second electrode of the switching transistor Q7 is connected to the first electrode of the switching transistor Q6. The third electrode of the switching transistor Q7 is connected to the cathode of diode D4 and the anode of diode D5 to form the output terminal of the second driving circuit. The anode of diode D4 is grounded, the cathode of diode D5 is connected to the anode of TVS transistor D6, and the cathode of TVS transistor D6 is connected to the second fixed power supply voltage.

6. The programmable discrete output card according to claim 5, characterized in that, The switching transistors Q1, Q2, Q3, Q4, Q5, Q6, and Q7 are transistors.

7. The programmable discrete output card according to claim 4, characterized in that, The discrete output branch also includes a fuse. The third terminal of the first solid-state relay, the third terminal of the second solid-state relay, the output terminal of the first drive circuit, and the output terminal of the second drive circuit in the discrete output branch are interconnected and connected to one end of the fuse.

8. The programmable discrete output card according to claim 1, characterized in that, The main control module includes a CPCI bridging chip, an FPGA chip, and several driver chips. The CPCI bridging chip is connected to the FPGA chip, the FPGA is connected to several driver chips, and the driver chips are connected to the discrete output branch.

9. The programmable discrete output card according to claim 1, characterized in that, The main control module also includes multiple isolation transceivers, which are connected between the FPGA chip and the discrete output module.

10. The programmable discrete output card according to claim 1, characterized in that, The power conversion module includes multiple power conversion chips.

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