CN111190361A - Controller - Google Patents
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- CN111190361A CN111190361A CN201811355643.2A CN201811355643A CN111190361A CN 111190361 A CN111190361 A CN 111190361A CN 201811355643 A CN201811355643 A CN 201811355643A CN 111190361 A CN111190361 A CN 111190361A
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- 238000004891 communication Methods 0.000 claims abstract description 85
- 238000012545 processing Methods 0.000 claims description 35
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 238000010586 diagram Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 8
- 238000011161 development Methods 0.000 description 4
- 230000003993 interaction Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 235000007516 Chrysanthemum Nutrition 0.000 description 1
- 244000189548 Chrysanthemum x morifolium Species 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/10—Packet switching elements characterised by the switching fabric construction
- H04L49/102—Packet switching elements characterised by the switching fabric construction using shared medium, e.g. bus or ring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/15—Interconnection of switching modules
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/21—Pc I-O input output
- G05B2219/21063—Bus, I-O connected to a bus
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Abstract
The present invention provides a controller comprising: the system comprises a back plate, N control plates, N analog quantity acquisition plates and a network plate, wherein the N control plates, the N analog quantity acquisition plates and the network plate are arranged on the back plate; wherein: the N control panels are respectively connected with the network board through Ethernet buses, the N control panels are connected through the Ethernet buses, and the N control panels are respectively connected with the N analog quantity acquisition boards through high-speed serial communication lines; the control board is used for receiving the data sent by the analog quantity acquisition board through the high-speed serial communication line; the network board is used for communicating with each control board in the N control boards through an Ethernet bus. The controller provided by the invention adopts the Ethernet bus communication connection among the control boards, so that the communication speed of the controller can be improved, and the occupation amount of hardware resources can be reduced.
Description
Technical Field
The invention relates to the field of rail transit, in particular to a controller which can improve the communication speed by adopting Ethernet bus communication connection among control boards.
Background
With the advent of the intelligent and big data era, higher requirements are put forward on the processing speed, channel capacity, integration, modularization, light weight and the like of controllers of rail transit vehicle equipment, power supply devices and trackside equipment.
In the prior art, a controller is mainly configured by a control board and a single processor, and then a communication function between the control boards in the controller is realized by a VME (virtual module express, VME) communication bus or a Compact Peripheral Component Interconnect (CPCI) bus.
Because the communication rate of the VME communication bus is not high and the application range is narrow, and the development difficulty of the CPCI bus is high and the hardware resources of the CPCI bus occupy a large amount, further, both the development difficulty of the CPCI bus and the hardware resources of the CPCI bus cannot meet the development requirements of power electronics and power transmission control technologies, how to improve the communication rate between control boards in a controller and reduce the occupation amount of the hardware resources is a problem to be solved urgently by technical personnel in the field.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a controller, and the Ethernet bus communication connection is adopted among control boards, so that the communication speed of the controller can be improved, and the occupation amount of hardware resources can be reduced.
According to a first aspect of embodiments of the present invention, there is provided a controller comprising: the system comprises a back plate, N control plates, N analog quantity acquisition plates and a network plate, wherein the N control plates, the N analog quantity acquisition plates and the network plate are arranged on the back plate; wherein:
the N control panels are respectively connected with the network board through Ethernet buses, the N control panels are connected through the Ethernet buses, and the N control panels are respectively connected with the N analog quantity acquisition boards through high-speed serial communication lines;
the control board is used for receiving the data sent by the analog quantity acquisition board through the high-speed serial communication line;
the network board is used for communicating with each control board in the N control boards through an Ethernet bus.
Optionally, the N control boards are daisy-chained by an ethernet bus.
Optionally, the controller further includes: n digital quantity input/output boards arranged on the back board; the N digital quantity input/output boards are respectively and directly connected with the N control boards through input/output ports (IO);
the digital quantity input/output board is used for receiving the data sent by the control board.
Optionally, the controller further includes: the first power supply board and the second power supply board are arranged on the back board; the first power supply board is respectively connected with the N digital quantity input/output boards, the N control boards, the network board and the N analog quantity acquisition boards;
the second power panel is respectively connected with the N analog quantity acquisition boards.
Optionally, N is 4.
Optionally, each of the N control boards includes a first ethernet switching chip, and the network board includes a second ethernet switching chip and a third ethernet switching chip; the first Ethernet switching chip in each of the p control boards is connected with the second Ethernet switching chip through an Ethernet bus, the first Ethernet switching chip in each of the q control boards is connected with the third Ethernet switching chip through an Ethernet bus, p and q are positive integers, and the sum of p and q is N.
Optionally, the N first ethernet switching chips in the N control boards are connected through the ethernet bus.
Optionally, each analog quantity acquisition board in the N analog quantity acquisition boards includes an analog/digital conversion chip, a first processor, and a differential processing module; the analog/digital conversion chip is connected with the sensor, and the first processor is respectively connected with the analog/digital conversion chip and the differential processing module; the differential processing module is used for carrying out differential processing on the data sent by the processor.
Optionally, each of the N control boards further includes a second processor and a difference removal processing module, the difference removal processing module is connected to the difference processing module through the high-speed serial communication line, the difference removal processing module is connected to the second processor, and the difference removal processing module is configured to perform difference removal processing on data after difference processing sent by the difference processing module.
Optionally, the first processor is a CPLD, and the second processor is an FPGA.
The controller provided by the embodiment of the invention comprises: the system comprises a back plate, N control plates, N analog quantity acquisition plates and a network plate, wherein the N control plates, the N analog quantity acquisition plates and the network plate are arranged on the back plate; in addition, the N control panels are respectively connected with the network board through Ethernet buses, the N control panels are connected through the Ethernet buses, and the N control panels are respectively connected with the N analog quantity acquisition boards through high-speed serial communication lines; the control board is used for receiving data sent by the analog quantity acquisition board through the high-speed serial communication line; the network board is used for communicating with each of the N control boards through an Ethernet bus. Because the Ethernet bus which is wide in application and high in communication rate is arranged between the control boards of the controller, on one hand, the selectivity of the processor in the controller can be increased, so that the application range of the controller is improved, on the other hand, data can be exchanged among the N control boards in the controller through the Ethernet bus, so that the communication rate in the controller can be improved, and the occupation amount of hardware resources is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a controller according to an exemplary embodiment of the present invention.
Fig. 2 is a schematic diagram of a controller according to another exemplary embodiment of the present invention.
Fig. 3 is a schematic diagram illustrating a communication structure between a network board and a control board in a controller according to still another exemplary embodiment of the present invention.
Fig. 4 is a schematic structural diagram illustrating communication between a control board and an analog quantity acquisition board in a controller according to still another exemplary embodiment of the present invention.
Fig. 5 is a schematic structural diagram illustrating communication between a control board and an analog quantity acquisition board in a controller according to still another exemplary embodiment of the present invention.
Description of reference numerals:
100: a controller;
10: a back plate;
20: a network board;
21: a second Ethernet switching chip;
22: a third Ethernet switching chip;
30. 31, 32, 33, 34: a control panel;
40. 41, 42, 43, 44: an analog quantity acquisition board;
51: a first power supply board;
52: a second power panel;
60. 61, 62, 63, 64: and a digital quantity input/output board.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic diagram of a controller according to an exemplary embodiment of the present invention. As shown in fig. 1, the controller 100 includes: the device comprises a back plate 10, and N control plates 30, N analog quantity acquisition plates 40 and a network plate 20 which are arranged on the back plate 10, wherein N is a positive integer; the N control boards 30 are respectively connected with the network board 20 through ethernet buses, the N control boards 30 are connected through ethernet buses, and the N control boards 30 are respectively connected with the N analog quantity acquisition boards 40 through high-speed serial communication lines; the control board 30 is used for receiving data sent by the analog quantity acquisition board 40 through a high-speed serial communication line; the network board 20 is used to communicate with each of the N control boards 30 via an ethernet bus.
In this embodiment, the controller 100 may be a controller of a rail transit vehicle, a power supply device, and a trackside device, may also be a controller in the field of power electronics or power transmission, and may also be a controller in other fields. The ethernet bus belongs to a communication bus, is wide in application and simple in development, and meanwhile, the ethernet bus is used as a communication bus for data interaction among the control panels, and has the characteristics of expandability, high communication rate and the like.
In this embodiment, the backplane 10 includes connectors (female connectors) for being connected to the N control boards 30, the N analog quantity acquisition boards 40, and the network board 20, respectively, and the backplane 10 is connected to the N control boards 30, the N analog quantity acquisition boards 40, and the network board 20 through the connectors on the backplane 10, and is mainly used for communication connection between the boards, where N is a positive integer, which may be 1, 2, or 4, and specifically, may set the N value according to the needs of actual situations.
In addition, each of the N control boards 30, the N analog quantity acquisition boards 40, and the network board 20 is provided with a connector (male connector) connected to the backplane 10, the N control boards 30 in the controller 100 are connected to a corresponding connector (female connector) on the backplane 10 through the respective connectors (male connectors), and are connected to the network board 20 through the ethernet bus, so as to implement communication between the control boards 30 and the network board 20, and the network board 20 is mainly used for communicating with each of the N control boards 30 through the ethernet bus. Meanwhile, the N control boards 30 are connected to a corresponding connector (female connector) on the backplane 10 via respective connectors (male connectors) on the boards, and then connected via an ethernet bus, so as to implement communication between the N control boards.
In addition, each of the N control boards 30 is connected to a corresponding connector (female connector) on the back board 10 through a connector (male connector) on the respective board, each of the control boards is connected to the N analog acquisition boards 40 through a high-speed serial communication line, and the N control boards 30 are configured to receive data sent by the analog acquisition boards 40 through the high-speed serial communication line. The high-speed serial communication line adopts an RS422 communication mode.
The embodiment of the invention provides a controller, which comprises: the system comprises a back plate, N control plates, N analog quantity acquisition plates and a network plate, wherein the N control plates, the N analog quantity acquisition plates and the network plate are arranged on the back plate; in addition, the N control panels are respectively connected with the network board through Ethernet buses, the N control panels are connected through the Ethernet buses, and the N control panels are respectively connected with the N analog quantity acquisition boards through high-speed serial communication lines; the control board is used for receiving data sent by the analog quantity acquisition board through the high-speed serial communication line; the network board is used for communicating with each of the N control boards through an Ethernet bus. Because the Ethernet bus which is wide in application and high in communication rate is arranged between the control boards of the controller, on one hand, the selectivity of the processor in the controller can be increased, so that the application range of the controller is improved, on the other hand, data can be exchanged among the N control boards in the controller through the Ethernet bus, so that the communication rate in the controller can be improved, and the occupation amount of hardware resources is reduced.
Fig. 2 is a schematic structural diagram of a controller according to another exemplary embodiment of the present invention, and in this embodiment, based on the embodiment shown in fig. 1, N is 4 to describe a structure of the controller and a communication manner between boards in the controller, as shown in fig. 2, the controller 100 includes: 4 control panels, 4 analog quantity acquisition panels, a network panel and a back panel, wherein the 4 control panels are respectively a control panel 31, a control panel 32, a control panel 33 and a control panel 34; 4 analog quantity acquisition boards are 41 respectively, analog quantity acquisition board 42, analog quantity acquisition board 43 and analog quantity acquisition board 44, 4 control panels pass through ethernet bus and are connected with the network board respectively, and carry out chrysanthemum formula through ethernet bus between 4 control panels and connect, 4 control panels pass through high-speed serial communication line and are connected with 4 analog quantity acquisition boards one-to-one respectively, in addition, 4 control panels, each board in 4 analog quantity acquisition boards and the network board links to each other through the connector (female head) that corresponds on respective connector (public head) and the backplate, in order to realize the communication between each board.
In this embodiment, an ethernet communication bus is used as a main communication bus, high-speed serial communication is used as an auxiliary communication mode, ethernet communication is performed according to a mode that a network board and a control board respectively operate a first ethernet switch chip, a second ethernet switch chip and a third ethernet switch chip through respective processors (FPGA, XC7Z045), the control board and an analog quantity acquisition board process transmitted data through the respective processors (FPGA, CPLD), and data interaction is realized through the high-speed serial communication mode. Because the controller has flexible architecture and high modularization degree, different numbers of control boards, analog quantity acquisition boards, network boards, digital quantity input/output boards and combinations thereof can be adopted according to requirements so as to meet specific functional requirements, and meanwhile, the controller has simple principle and is easy to realize and popularize.
The communication connection between the network board and the control board, between the control boards, and between the control board and the analog quantity acquisition board will be described in detail below.
Fig. 3 is a schematic diagram illustrating a communication structure between a network board and a control board in a controller according to still another exemplary embodiment of the present invention, and as shown in fig. 3, N control boards 30 are daisy-chained by an ethernet bus. The N control boards are respectively connected to the network board through ethernet buses, the N control boards are connected to each other through ethernet buses, specifically, each control board of the N control boards 30 is connected to a corresponding connector (female connector) on the backplane 10 through a connector (male connector) on each board, and then daisy-chained through ethernet buses, and the N control boards 30 are respectively connected to the network board 20 through ethernet buses, as illustrated by taking N as 4, as shown in fig. 3, each control board of the 4 control boards includes a first ethernet switch chip, and the network board 20 includes a second ethernet switch chip and a third ethernet switch chip; the first Ethernet switching chip in each of the p control boards is connected with the second Ethernet switching chip through an Ethernet bus, the first Ethernet switching chip in each of the q control boards is connected with the third Ethernet switching chip through an Ethernet bus, wherein p and q are positive integers, the sum of p and q is 4, and the 4 first Ethernet switching chips in the 4 control boards are connected through the Ethernet bus.
Specifically, p and q are both 2, and the Port2 of the first ethernet switch chip of the control board 31 in the controller 100 is in ethernet communication with the Port2 of the first ethernet switch chip of the control board 32 through the ethernet bus; port3 of the first Ethernet switch chip of control board 32 is in Ethernet communication with Port2 of the first Ethernet switch chip of control board 33 via an Ethernet bus; port3 of the first Ethernet switch chip of control board 33 is in Ethernet communication with Port2 of the first Ethernet switch chip of control board 34 via an Ethernet bus. Therefore, the 4 control boards are connected in a daisy chain manner, namely the 4 control boards can be connected through an Ethernet bus to realize the mutual transmission of data. Further, the Port1 of the first ethernet switching chip of the control board 31 in the controller 100 is in ethernet communication with the Port1 of the second ethernet switching chip 21 of the network board 20 in the controller 100 through the ethernet bus; port1 of the first Ethernet switch chip of control board 32 is in Ethernet communication with Port2 of the second Ethernet switch chip 21 of network board 20 via an Ethernet bus; port1 of the first Ethernet switch chip of control board 33 is in Ethernet communication with Port1 of the third Ethernet switch chip 22 of network board 20 via an Ethernet bus; the Port1 of the first ethernet switch chip of the control board 34 is in ethernet communication with the Port2 of the third ethernet switch chip 22 of the network board 20 via the ethernet bus, thereby enabling ethernet communication between the control board 30 and the network board 20.
In addition, with continued reference to fig. 3, each control board in the controller further includes a respective processor, and the processor in each control board is mainly used for operating communication between the first ethernet switch chip in the control board and other control boards, and communication between the first ethernet switch chip and the network board, so as to complete transmission of data; further, the processor and the first ethernet switch chip exchange data mainly through the RGMII interface, but the embodiment does not limit the interface where the processor and the first ethernet switch chip are connected.
The network board in the controller further includes a network board processor, in this embodiment, a ZYNQ7000 series processor XC7Z045 of Xilinx corporation is adopted to operate the second ethernet switch chip and the third ethernet switch chip of the network board to communicate with the control board through the ethernet bus, so as to implement communication between the control board and the network board. Furthermore, in this embodiment, the XC7Z045 processor is used to operate the second ethernet switch chip and the third ethernet switch chip to communicate with the control board, so that the advantage that the XC7Z045 processor can process data in parallel can be fully utilized to reduce the delay of data processing. Of course, the processor in the network board is also not limited to XC7Z045 in the present embodiment, and in addition, the processor in the network board exchanges data with the second ethernet switching chip and the third ethernet switching chip through the RGMII interface.
In an alternative mode, the simultaneous reception and transmission of ethernet data can be realized by adopting a physical connection mode of two pairs of differential signals (1 pair of reception and transmission, 4 lines in total) between the control boards and between the control board and the network board.
In this embodiment, the ethernet bus is disposed between the network board and the N control boards to implement ethernet communication between the network board and the N control boards, and the ethernet bus is disposed between the N control boards to implement ethernet communication between the N control boards, according to the XC7Z045 processor employed in the network board, since the ethernet bus can simultaneously act on the second ethernet switch chip and the third ethernet switch chip of the network board to reduce the delay of data processing, the delay is reduced by half compared with that of one ethernet switch chip, thereby improving the data interaction rate of the controller.
Fig. 4 is a schematic structural diagram illustrating communication between a control board and an analog quantity acquisition board in a controller according to still another exemplary embodiment of the present invention, where, as shown in fig. 4, each of the 4 analog quantity acquisition boards includes an analog/digital conversion chip 411, a first processor 412 and a differential processing module 413; the analog/digital conversion chip 411 is connected with the sensor, and the first processor 412 is respectively connected with the analog/digital conversion chip 411 and the differential processing module 413; the difference processing module 413 is configured to perform difference processing on the data sent by the first processor 412. Each of the 4 control boards further includes a de-differencing module 311 and a second processor 312, the de-differencing module 311 and the differential processing module 413 are connected through a high-speed serial communication line, the de-differencing module 311 is connected with the second processor 312, and the de-differencing module 311 is configured to perform de-differencing on the differentially processed data sent by the differential processing module 312.
Next, the difference removal processing module 311 in the control board 31 in fig. 4 is an RS422 chip, the second processor 312 is an FPGA, the analog/digital conversion chip 411 in the analog acquisition board 41 is an a/D chip, the first processor 412 is a CPLD, and the difference processing module 413 is an RS422 chip.
In the present embodiment, the CPLD 412 in the analog quantity acquisition board 41 is mainly used to process the data acquired by the sensor read by the a/D chip 411, and send the processed data to the RS422 chip 413, and the FPGA 312 in the control board 31 is used to receive the data differentially processed by the RS422 chip 413 in the analog quantity acquisition board 41 and then differentially processed by the RS422 chip 311 in the control board 31, so as to implement communication between the analog quantity acquisition board 41 and the control board 31.
Specifically, the CPLD 412 in the analog quantity acquisition board 41 operates the a/D chip 411 and reads the sampling signal of the sensor, and then the CPLD 412 transmits the acquired data to the RS422 chip 311 of the control board 31 by means of high-speed serial communication line communication. In order to ensure the reliability of the transmitted data and improve the anti-interference capability of the channel in the data transmission process, 4 paths of high-speed serial communication data sent by the CPLD 412 are subjected to differencing by the RS422 chip 413, 4 pairs of differential signals are generated, the 4 pairs of differential signals are transmitted to the RS422 chip 311 in the control board 31 through the high-speed serial communication line, the 4 pairs of differential signals are subjected to differencing by the RS422 chip 311, and the 4 paths of high-speed serial communication data subjected to the differencing are sent to the FPGA 312 in the control board 31, so that the high-speed serial communication between the analog quantity acquisition board 41 and the control board 31 is realized.
It is worth noting that: in this embodiment, data exchange is performed between 4 control boards and 4 analog quantity acquisition boards through high-speed serial communication in a one-to-one manner.
In the controller provided in this embodiment, the analog/digital conversion a/D chip in the analog quantity acquisition board sends the received signal acquired by the sensor to the first processor CPLD in the analog quantity acquisition board, the first processor CPLD sends the received data to the differential processing module RS422 chip through the 4-way high-speed serial communication line for differential processing, the data after differential processing will generate 4 differential signals, the 4 differential signals are transmitted to the de-differential processing module of the control board through the high-speed serial communication line, and the data is sent to the processor of the control board through the high-speed serial communication line after de-differential processing of the de-differential processing module, so as to complete communication between the analog quantity acquisition board and the control board. Because the high-speed serial communication line is adopted for communication connection in the communication process between the analog quantity acquisition board and the control board, the channel interference in the data transmission process is reduced, and the reliability of the transmitted data can be ensured.
Optionally, with continuing reference to fig. 2, the controller provided by the present invention further includes: n digital quantity input/output boards 60 provided on the backplane; the N digital quantity input/output boards 60 are directly connected to the N control boards 30 through input/output ports IO, respectively; the digital quantity input/output board 60 is used for receiving data sent by the control board 30.
Specifically, the CPLD of the analog quantity acquisition board receives the data after differential processing of the signals acquired by the sensor and sent by the A/D chip, the data is sent to the control board again through the high-speed serial communication line, and is subjected to the de-difference processing by the control board, and at this time, the data processed by the control panel is sent to a digital input/output board through a backboard, the digital input/output board is mainly used for receiving the data sent by the control panel, wherein, the N control boards and the N digital quantity input/output boards also adopt a one-to-one mode to transmit data, in addition, the connection between the N control boards and the N digital quantity input/output boards is also connected with the connector (male connector) on each board through the corresponding connector (female connector) on the back board, so as to realize the direct connection of the control board and the input/output port IO of the digital quantity input/output board.
Optionally, with continuing reference to fig. 2, the controller according to the embodiment of the present invention further includes: a first power supply board 51 and a second power supply board 52 provided on the back panel; the first power supply board 51 is respectively connected with the N digital quantity input/output boards 60, the N control boards 30, the network board 20 and the N analog quantity acquisition boards 40; the second power supply board 52 is connected to the N analog quantity acquisition boards 40, respectively.
Specifically, the first power board 51 is connected to the corresponding connector (female) on the back board 10 through the connector (male) on the first power board 51, and is connected to the N digital quantity input/output boards 60, the N control boards 30, the network board 20 and the N analog quantity collecting boards 40 through the connectors (male) corresponding to the boards on the back board 10, respectively, the first power board 51 is mainly used for providing power to each board in the controller 100, the first power board 51 provides DC +5V and GND for other boards through the back board 10, the second power board 52 is connected to the N analog quantity collecting boards 40 through the back board 10, and provides DC +15V, DC-15V and GND for the N analog quantity collecting boards 40, wherein the first power board 51 and the second power board 52 can be batteries, energy storage devices, etc., the types of the first power supply board 51 and the second power supply board 52 can be selected according to specific situations.
In the embodiment of the invention, because the Ethernet buses with wide application and high communication speed are arranged among the control boards of the controller, on one hand, the selectivity of the processor in the controller can be increased, thereby improving the application range of the controller, and on the other hand, the N control boards in the controller can exchange data through the Ethernet buses, thereby improving the communication speed in the controller and reducing the occupation amount of hardware resources.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A controller, comprising: the system comprises a back plate, N control plates, N analog quantity acquisition plates and a network plate, wherein the N control plates, the N analog quantity acquisition plates and the network plate are arranged on the back plate; wherein:
the N control panels are respectively connected with the network board through Ethernet buses, the N control panels are connected through the Ethernet buses, and the N control panels are respectively connected with the N analog quantity acquisition boards through high-speed serial communication lines;
the control board is used for receiving the data sent by the analog quantity acquisition board through the high-speed serial communication line;
the network board is used for communicating with each control board in the N control boards through an Ethernet bus.
2. The controller of claim 1, wherein the N control boards are daisy-chained by an ethernet bus.
3. The controller of claim 1, further comprising: n digital quantity input/output boards arranged on the back board; the N digital quantity input/output boards are respectively directly connected with the N control boards through input/output ports I/O;
the digital quantity input/output board is used for receiving the data sent by the control board.
4. The controller of claim 3, further comprising: the first power supply board and the second power supply board are arranged on the back board; the first power supply board is respectively connected with the N digital quantity input/output boards, the N control boards, the network board and the N analog quantity acquisition boards;
the second power panel is respectively connected with the N analog quantity acquisition boards.
5. The controller of any one of claims 1-4, wherein N is 4.
6. The controller of claim 5, wherein each of the N control boards comprises a first Ethernet switch chip, and the network board comprises a second Ethernet switch chip and a third Ethernet switch chip; the first Ethernet switching chip in each of the p control boards is connected with the second Ethernet switching chip through an Ethernet bus, the first Ethernet switching chip in each of the q control boards is connected with the third Ethernet switching chip through an Ethernet bus, p and q are positive integers, and the sum of p and q is N.
7. The controller of claim 6, wherein N of the first Ethernet switch chips in the N control boards are connected by the Ethernet bus.
8. The controller of claim 6, wherein each of the N analog acquisition boards comprises an analog-to-digital conversion chip, a first processor, and a differential processing module; the analog/digital conversion chip is connected with the sensor, and the first processor is respectively connected with the analog/digital conversion chip and the differential processing module; the differential processing module is used for carrying out differential processing on the data sent by the processor.
9. The controller according to claim 8, wherein each of the N control boards further includes a second processor and a de-differencing module, the de-differencing module and the differencing module are connected via the high-speed serial communication line, the de-differencing module is connected to the second processor, and the de-differencing module is configured to de-differencing the differentially processed data sent by the differencing module.
10. The controller of claim 9, wherein the first processor is a CPLD and the second processor is an FPGA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811355643.2A CN111190361B (en) | 2018-11-14 | 2018-11-14 | Controller for controlling a power supply |
Applications Claiming Priority (1)
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