CN214067648U - Programmable logic controller device of direct current cabinet - Google Patents
Programmable logic controller device of direct current cabinet Download PDFInfo
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- CN214067648U CN214067648U CN202120022139.1U CN202120022139U CN214067648U CN 214067648 U CN214067648 U CN 214067648U CN 202120022139 U CN202120022139 U CN 202120022139U CN 214067648 U CN214067648 U CN 214067648U
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Abstract
The utility model discloses a programmable logic controller device of a direct current cabinet, which comprises a host and an extension machine, wherein the host comprises a host backboard, a power supply, a high-speed switching value output board, a mainboard, a high-speed switching value input board, an analog input board and a host expansion board, and the host expansion board comprises a first expansion board and a second expansion board; the host backboard is provided with six sockets for inserting the plate; the mainboard adopts a dual-core CPU processing chip; the expansion machine comprises a first expansion machine, a second expansion machine and a third expansion machine, wherein the first expansion machine, the second expansion machine and the third expansion machine are respectively composed of a back plate and an expansion board, the back plate is provided with sockets corresponding to the number of the expansion boards, the expansion boards are vertically inserted into the back plate through terminals, and the input or output of signals of the expansion boards are transmitted among a main board of a host, a host expansion board and the expansion boards through buses. The utility model discloses increased the monitoring function to the interface state, improved secondary system's reliability.
Description
Technical Field
The utility model belongs to direct current pulls the power supply system field, specifically relates to a direct current cabinet programmable logic controller device.
Background
In the direct current traction power supply system, a large amount of locking and tripping switching value signals are involved in the processes of controlling an on-line isolating switch, local closing and opening operations and cross-region or cross-system tripping, and a relay interface or a PLC is adopted in the traditional scheme to realize the acquisition of the switching value signals and the logic design of locking and controlling. The scheme can cause the secondary interface to have complex design, high construction difficulty and high maintenance cost. How to improve the device, realize retrenching the local switching value signal, cross district or cross system signal adopts digital quantity transmission, increases the monitoring function to interface state simultaneously to reduce the design complexity of cubical switchboard secondary interface, improve secondary system's reliability, be the problem that needs to solve.
SUMMERY OF THE UTILITY MODEL
The utility model aims at realizing retrenching the local switching value signal, cross the district or cross system signal and adopt the digital quantity transmission, increase the monitor function to the interface state simultaneously to reduce the design complexity of cubical switchboard secondary interface, improve secondary system's reliability.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a programmable logic controller of a direct current cabinet comprises a host and an expansion machine, wherein the host comprises a host backboard, a power supply, a high-speed switching value output board, a main board, a high-speed switching value input board, an analog input board and a host expansion board, the host expansion board comprises a first expansion board and a second expansion board, and the host comprises 7 boards; the host backboard is provided with six sockets for inserting the plate, and the power supply, the high-speed switching value output board, the high-speed switching value input board, the analog value input board, the main board, the first expansion board and the second expansion board are vertically inserted into the first to sixth sockets of the backboard through terminals in sequence;
the main board adopts a dual-core CPU processing chip, the dual-core CPU processing chip is divided into a protection CPU and a measurement and control CPU, and the protection function part and the measurement and control function part are monitored separately;
the expander comprises a first expander, a second expander and a third expander, wherein the first expander, the second expander and the third expander are respectively composed of a backboard and expansion boards, the first expander is provided with 2 expansion boards, the second expander is provided with 3 expansion boards, the third expander is provided with 5 expansion boards, the number of the backboard corresponding to the expansion boards is provided with a socket, the expansion boards are vertically inserted onto the backboard through terminals, and the input or output of expansion board signals is transmitted among a main board, a host expansion board and the expansion boards of the host through buses.
Furthermore, the protection function part comprises a high-speed switching value input interface, a high-speed switching value output interface, an analog quantity input interface and a Goose interface for information transmission among the multiple IEDs, and the switching value input circuit, the switching value output circuit and the analog quantity input circuit are correspondingly realized through corresponding interfaces.
Furthermore, the measurement and control function part comprises an Ethernet interface and an RS-485 interface and is used for transmitting the internal information of the system to the user side; the test function part is also provided with a debugging interface for testing the functional completeness of the whole device, a GPS time setting interface for ensuring the control instruction action of each direct current cabinet to be consistent and an expansion board interface.
Further, the host expansion board is selected from one or more of a switching value input board, a switching value output board, an analog input board and a temperature monitoring board, and each host expansion board is provided with an independent CPU; except for the host backboard, the switching value input quantity, the switching value output quantity and the analog quantity signal of the host board are directly connected with the mainboard protection CPU through terminals.
Furthermore, the expansion board of the expansion machine is selected from one or more of a switching value input board, a switching value output board, an analog value input board and a temperature monitoring board, each of the expansion board is provided with an independent CPU, and the switching value input quantity, the switching value output quantity, the analog quantity and the temperature signal of the expansion board of the expansion machine are interacted with the measurement and control CPU through a bus on the back board.
Further, the terminal is a CAN terminal.
Further, the bus is a CAN bus and an RS485 bus.
Further, the direct current cabinet programmable logic controller device is powered by a DC24V power supply, a DC220V power supply or a DC1V power supply.
Furthermore, the direct current cabinet programmable logic controller device is provided with a touch electronic screen which is connected with a main board of the host.
The beneficial effects of the utility model reside in that:
1. the control of the internet access switch can be realized in the terminal cabinet, and the secondary wiring design is simplified;
2. the back plate mode is adopted, the expansion plate is flexibly inserted and connected, and different ports are conveniently configured according to the field requirements;
3. data transmission is carried out between the plates in a CAN and RS485 dual-bus mode, and even if one path of communication is abnormal, the other path of communication is replaced;
4. the dual-core processor is equipped, the field protection function and the measurement and control function are independent, and the protection function of the device cannot be influenced by the abnormality of the measurement and control part;
5. the system is provided with a Goose interface, so that important real-time events in the system can be transmitted between stations, and hard wiring between the stations is reduced.
6. The voltage of the switching value input port and the voltage of the switching value output port of the conventional programmable logic controller are both DC24V, and the device is compatible with DC220V, DC1V and DC 24V.
Drawings
FIG. 1 is a schematic structural view of the apparatus;
fig. 2 is a schematic diagram of a functional structure of a host motherboard of the device.
Reference numerals: 1. a high-speed switching value input interface; 2. a high-speed switching value output interface; 3. an analog input interface; 4. a Goose interface; 5. a GPS time setting interface; 6. an RS-485 communication interface; 7. an Ethernet interface; 8. debugging an interface; 9. an expansion board interface; 10. a primary loop with a dual-core processor; 11. a power source; 12. touch type electronic screen
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 1, the utility model discloses a dc cabinet programmable logic controller device, a dc cabinet programmable logic controller, including host computer and expander, the host computer includes host computer backplate, power and high-speed switching value output board, mainboard, high-speed switching value input board, analog input board and host computer expansion board, the host computer expansion board includes first expansion board, second expansion board, the host computer includes 7 plates altogether; the host backboard is provided with six sockets for inserting the plate, and the power supply, the high-speed switching value output board, the high-speed switching value input board, the analog value input board, the main board, the first expansion board and the second expansion board are vertically inserted into the first to sixth sockets of the backboard through terminals in sequence; the mainboard adopts a dual-core CPU processing chip, the dual-core CPU processing chip is divided into a protection CPU and a measurement and control CPU, and the protection function part and the measurement and control function part are monitored separately;
the expander comprises a first expander, a second expander and a third expander, the first expander, the second expander and the third expander are respectively composed of a back plate and expansion plates, the first expander is provided with 2 expansion plates, the second expander is provided with 3 expansion plates, the third expander is provided with 5 expansion plates, the back plate is provided with sockets corresponding to the number of the expansion plates, the expansion plates are vertically inserted onto the back plate through terminals, and the input or output of expansion plate signals is transmitted between the main plate and the host through a bus, and the host expansion plates and the expansion plates.
As shown in fig. 2, the protection function portion includes a high-speed switching value input interface 1, a high-speed switching value output interface 202, an analog value input interface 3, and a Goose interface 4 for information transmission between multiple IEDs, and the switching value input circuit, the switching value output circuit, and the analog value input circuit are implemented by corresponding interfaces.
The measurement and control function part comprises an Ethernet interface 7 and an RS-485 interface 6 and is used for transmitting the internal information of the system to a user side; the test function part is also provided with a debugging interface 8 for testing the functional completeness of the whole device, a GPS time setting interface 5 for ensuring the control instruction action of each direct current cabinet to be consistent and an expansion board interface.
The host expansion board is selected from one or more of a switching value input board, a switching value output board, an analog input board and a temperature monitoring board, and each host expansion board is provided with an independent CPU; except for the host backboard, the switching value input quantity, the switching value output quantity and the analog quantity signal of the host board are directly connected with the mainboard protection CPU through terminals.
The expansion board of the expander is selected from one or more of a switching value input board, a switching value output board, an analog value input board and a temperature monitoring board, each of the expansion board is provided with an independent CPU, and the switching value input quantity, the switching value output quantity, the analog value and the temperature signal of the expansion board of the expander are interacted with the measurement and control CPU through a bus on the back board.
The terminal is a CAN terminal.
The bus is a CAN bus and an RS485 bus.
The direct current cabinet programmable logic controller device is powered by a DC24V or DC220V or DC110V power supply.
The direct current cabinet programmable logic controller device is provided with a touch electronic screen and is connected with a main board of the host.
The host mainboard selects a dual-core CPU processing chip, and separates the local protection function part and the measurement and control function part independently, and the local protection circuit can still be monitored under the abnormal condition of the measurement and control function part. The local protection function part mainly comprises a high-speed switching value input interface 1, a high-speed switching value output interface 2, an analog quantity input interface 3 and a Goose interface 4 for information transmission among multiple IEDs, and corresponding switching value input circuits, switching value output circuits and analog quantity input circuits are realized through corresponding interfaces.
The measurement and control functional part mainly comprises a communication interface which comprises an Ethernet interface 7 and an RS-485 interface 6 and is mainly used for transmitting system internal information to a user side to ensure that a user observes and controls the state of control information in the direct current cabinet, and the debugging interface 8 is used for testing the functional completeness of the whole device after equipment is installed, has a fault and controls peripheral equipment to change; in order to ensure the consistent control command action of each direct current cabinet, a GPS time setting interface 5 is reserved in the measurement and control function part; the device supports a plurality of expansion boards by reserving an expansion board interface 9, and comprises a switching value input board, a switching value output board, an analog value input board, a temperature monitoring board and the like, wherein the expansion boards are provided with independent CPUs (central processing units), and transmit signals to the inside of a system or send the signals out from the inside of the system by a CAN (controller area network) bus and an RS485 bus to form a switching value input loop or a switching value output loop or an analog value expansion loop; the main board of the host forms a main loop 10 with a dual-core processor by combining the loops through a dual-core CPU processing chip; the expansion board can be arranged in the host machine or independently exist as an expansion machine by combining the specific peripheral equipment number on site; the power supply 11 of the device adopts a DC24V power supply, and in the direct current cabinet, the adoption of the DC24V is very convenient and fast without being led out separately, so that the difficulty in leading out the power supply 11 can be reduced. In order to ensure that field maintenance personnel can check the working state of the device and the field control condition more intuitively and conveniently, the device is provided with a touch electronic screen 12.
The field maintenance personnel carry out the program setting according to predetermined logic before using the device, and signals such as external high-speed switching value input, high-speed switching value output, analog quantity and temperature are connected with the internal circuit through the terminal, can gather each signal of outside when the device starts. If the high-speed switching value input switching value output of the protection function part corresponds to the high-speed switching value input switching value output, the signal is directly transmitted into the measurement and control CPU, and if the high-speed switching value input switching value output signal of the expansion board is the switching value input switching value output signal of the expansion board, the signal is transmitted into the measurement and control CPU in a host backboard bus mode; the two CPUs use user-defined logic as a judgment basis and send out proper action instructions. Each extension plate is provided with an 8-bit dial switch, and the extension plates are used for selecting different addresses when CAN and RS485 dual-bus communication is carried out, and the highest support is provided for 256 extension plates; therefore, before the device is started, the addresses of all expansion boards need to be set, namely the positions of the 8-bit dial switches are selected, and the unique addresses are ensured; the switching value input and output states can be transmitted to a control center through an external RS485 interface 6 and an Ethernet interface 7, and the control can be checked through a local touch electronic screen 12.
The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes and modifications made by those skilled in the art should not be construed as departing from the scope of the present invention.
Claims (9)
1. A programmable logic controller device of a direct current cabinet comprises a host and an expansion machine, wherein the host comprises a host backboard, a power supply, a high-speed switching value output board, a main board, a high-speed switching value input board, an analog input board and a host expansion board, the host expansion board comprises a first expansion board and a second expansion board, and the host comprises 7 boards; the host backboard is provided with six sockets for inserting the plate, and the power supply, the high-speed switching value output board, the high-speed switching value input board, the analog value input board, the main board, the first expansion board and the second expansion board are vertically inserted into the first to sixth sockets of the backboard through terminals in sequence;
the system is characterized in that a dual-core CPU processing chip is adopted by the mainboard, the dual-core CPU processing chip is divided into a protection CPU and a measurement and control CPU, and a protection function part and a measurement and control function part of the mainboard are monitored separately;
the expander comprises a first expander, a second expander and a third expander, wherein the first expander, the second expander and the third expander are respectively composed of a backboard and expansion boards, the first expander is provided with 2 expansion boards, the second expander is provided with 3 expansion boards, the third expander is provided with 5 expansion boards, the number of the expansion boards corresponding to the backboard is provided with a socket, the expansion boards are vertically inserted into the backboard through terminals, and the input or output of expansion board signals is transmitted among a main board of a host, a host expansion board and the expansion boards.
2. The direct current cabinet programmable logic controller device of claim 1, wherein the protection function portion comprises a high-speed switching value input interface, a high-speed switching value output interface, an analog value input interface and a Goose interface for information transmission among the plurality of IEDs, and the switching value input circuit, the switching value output circuit and the analog value input circuit are respectively realized through the corresponding interfaces.
3. The direct current cabinet programmable logic controller device of claim 1, wherein the measurement and control function part comprises an ethernet interface and an RS-485 interface, and is used for transmitting system internal information to a user side; the measurement and control function part is also provided with a debugging interface for testing the functional completeness of the whole device, a GPS time setting interface for ensuring the control instruction action of each direct current cabinet to be consistent and an expansion board interface.
4. The programmable logic controller device of claim 1, wherein the host expansion board is selected from one or more of a switching value input board, a switching value output board, an analog input board and a temperature monitoring board, and each host expansion board is provided with an independent CPU; besides the host backboard, the power supply, the high-speed switching value output board, the main board, the high-speed switching value input board, the analog value input board and the switching value input quantity, the switching value output quantity and the analog value signal of the host expansion board are directly connected with the protection CPU through terminals.
5. The direct current cabinet programmable logic controller device as claimed in claim 1, wherein the expansion board of the expander is selected from one or more of a switching value input board, a switching value output board, an analog input board and a temperature monitoring board, each of which is provided with an independent CPU, and the switching value input quantity, the switching value output quantity, the analog quantity and the temperature signal of the expansion board of the expander are interacted with the measurement and control CPU through a bus on the back board.
6. The dc cabinet plc device according to claim 1, wherein the terminal is a CAN terminal.
7. The direct current cabinet programmable logic controller device of claim 1 or 5, wherein the bus is a CAN and RS485 dual bus.
8. The DC cabinet plc device of claim 1, wherein the DC cabinet plc device is powered by a DC24V power source.
9. The direct current cabinet programmable logic controller device according to claim 1, wherein the direct current cabinet programmable logic controller device is provided with a touch electronic screen, and is connected with a main board of a host.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120022139.1U CN214067648U (en) | 2021-01-05 | 2021-01-05 | Programmable logic controller device of direct current cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120022139.1U CN214067648U (en) | 2021-01-05 | 2021-01-05 | Programmable logic controller device of direct current cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214067648U true CN214067648U (en) | 2021-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120022139.1U Active CN214067648U (en) | 2021-01-05 | 2021-01-05 | Programmable logic controller device of direct current cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214067648U (en) |
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2021
- 2021-01-05 CN CN202120022139.1U patent/CN214067648U/en active Active
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