CN103217930A - Data interaction system for industrial controllers - Google Patents
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Abstract
The invention discloses a data interaction system for industrial controllers. The system at least comprises a first industrial controller, i.e. a working controller, and a second industrial controller, i.e. a spare controller, wherein the working controller and the spare controller are respectively provided with a universal serial bus (USB) on-the-go interface, i.e. a USB OTG interface, the USB OTG interface of the working controller is connected with that of the spare controller through a USB bus. When data is transmitted between the working controller and the spare controller, the working controller can directly transmit the data to a second USB OTG interface of the spare controller through a first USB OTG interface of the working controller, and similarly, the spare controller also can transmit the data into the working controller through the USB OTG interface, so that the data transmission between the working controller and the spare controller can be realized without a third device, and the data transmission complexity between the working controller and the spare controller can be alleviated.
Description
Technical field
The present invention relates to automatic field, relate to the data interaction system between a kind of industrial control unit (ICU) in particular.
Background technology
Now, automatic technology has covered people's life, industrial every aspect.In commercial production, automation control system is to realize that process units efficiently, reliably reaches the assurance of stable operation for a long time.
At present, industrial automation control system adopts the hot backup redundancy scheme substantially, the industrial control unit (ICU) that promptly adopts two covers or many covers to have identical automatic control system, wherein, a cover industrial control unit (ICU) is controlled the operation of production equipment as working controller, remaining industrial control unit (ICU) is as spare controller, when working controller broke down, spare controller and working controller switched, thereby adopted spare controller that production equipment is controlled.
When guaranteeing that primary, spare controller switches, The whole control system is in state stably.Great amount of data transmission is often arranged, to guarantee both data sync between primary, spare controller.In the prior art, two cover industrial control unit (ICU)s are finished the transmission of data usually by third party device in the process of data transmission, be that working controller needs earlier data transmission to be arrived this third party device, by third party device data are sent to spare controller again, thereby have increased the complexity that the automatic control system data transmit.
Summary of the invention
In view of this, the invention provides the data interaction system between a kind of industrial control unit (ICU), to reduce the complexity that the automatic control system data transmit.
For achieving the above object, the invention provides following technical scheme:
Data interaction system between a kind of industrial control unit (ICU), described system comprises first industrial control unit (ICU) and second industrial control unit (ICU) at least, wherein, described first industrial control unit (ICU) is as working controller, described second industrial control unit (ICU) is as spare controller, described working controller comprises a USB OTG interface, and described spare controller comprises the 2nd USB OTG interface;
A described USB OTG interface links to each other by usb bus with described the 2nd USB OTG interface;
Described working controller dispose with described spare controller in the first data communication parameter that is complementary of the second data communication parameter;
Described working controller is used for determining communication mode according to the described first data communication parameter, and according to described communication mode, by a described USB OTG interface data to be sent is transmitted to described spare controller through described usb bus;
Described spare controller is used for receiving the data that described working controller sends by described the 2nd USB OTG interface.
Preferably, the described second data communication parameter comprises: the number of the communication protocol that disposes in the described spare controller, message transmission rate and data buffer;
Accordingly, the described first data communication parameter comprises: the number of the communication protocol that disposes in the described main control, message transmission rate and data buffer.
Preferably, the communication protocol that disposes in described working controller and the described spare controller is the USB2.0 agreement.
Preferably, the message transmission rate of the message transmission rate of described working controller and described spare controller is 480Mbits/s.
Preferably, the data buffer of described working controller comprises at least: the first data buffer swapping and second data buffer;
Accordingly, the data buffer of described spare controller comprises: the 3rd data buffer and the 4th data buffer; Wherein, described the 3rd data buffer is used to receive the data from described first data buffer; Described the 4th data buffer is used to receive the data from described second data buffer.
Preferably, described working controller is used in the data that will write to described first data buffer writing data to be sent to described second data buffer when the 3rd data buffer of described spare controller sends; When finishing when the data in described first data buffer are sent, the data that control will write to described second data buffer send to the 4th data buffer of described spare controller, and during the data in sending described second data buffer, write data to be sent to described first data buffer.
Preferably, described spare controller also is used for sending data by described the 2nd USB OTG interface to described working controller;
Described working controller also is used for receiving the data that described spare controller sends by described usb bus by a described USB OTG interface.
Preferably, described spare controller comprises at least: the 5th data buffer and the 6th data buffer;
Accordingly, described working controller comprises: the 7th data buffer and the 8th data buffer; Wherein, described the 7th data buffer is used to receive the data from described the 5th data buffer; Described the 8th data buffer is used to receive the data from described the 6th data buffer.
Preferably, described spare controller is used in the data that will write to described the 5th data buffer writing data to be sent to described the 6th data buffer when the 7th data buffer of described working controller sends; When finishing when the data in described the 5th data buffer are sent, the data that control will write to described the 6th data buffer send to the 8th data buffer of described spare controller, and during the data in sending described the 6th data buffer, write data to be sent to described the 5th data buffer.
Via above-mentioned technical scheme as can be known, compared with prior art, the invention discloses the data interaction system between a kind of industrial control unit (ICU), this system comprises that at least first industrial control unit (ICU) is a working controller, and second industrial control unit (ICU) is a spare controller.Be provided with USB OTG interface on this working controller and the spare controller, and be connected by the USB OTG interface of usb bus with working controller and spare controller.Because working controller links to each other by USB OTG with spare controller, when working controller need be sent to data in the spare controller, working controller is determined the communication mode of self according to the data communication parameter of spare controller, and directly data are sent to the 2nd USB OTG interface of spare controller by a USB OTG interface of working controller according to this communication mode, need not can realize also that through the 3rd equipment working controller carries out data transmission to spare controller, thus the complexity of the data transmission between reduction working controller and spare controller.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiments of the invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to the accompanying drawing that provides.
Fig. 1 shows the structural representation of an embodiment of the data interaction system between a kind of industrial control unit (ICU) of the present invention;
Fig. 2 shows the structural representation of another embodiment of the data interaction system between a kind of industrial control unit (ICU) of the present invention;
Fig. 3 shows a kind of data transmission flow process figure that adopts ping-pong operation mechanism;
Fig. 4 shows the structural representation of another embodiment of the data interaction system between a kind of industrial control unit (ICU) of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Referring to Fig. 1, show the structural representation of an embodiment of the data interaction system between a kind of industrial control unit (ICU) of the present invention.This system comprises first industrial control unit (ICU) and second industrial control unit (ICU) at least in the present embodiment.Wherein, first industrial control unit (ICU) is set to working controller 1, the second industrial control unit (ICU) and is set to spare controller 2.Wherein, working controller is an industrial control unit (ICU) of controlling the production equipment operation in process of production, and first industrial control unit (ICU) as working controller is an industrial control unit (ICU) usually.Spare controller substitutes the industrial control unit (ICU) that working controller control is produced for when working controller breaks down, and second industrial control unit (ICU) as spare controller can have one or more industrial control unit (ICU) usually.When guaranteeing that primary, spare controller switches, The whole control system is in state stably.Great amount of data transmission is often arranged, to guarantee both data sync between primary, spare controller.
In the present embodiment, working controller 1 and spare controller 2 are provided with USB On-The-Go interface, i.e. USB OTG interface.Set this working controller 1 and be provided with a USB OTG interface 11, this spare controller 2 is provided with the 2nd USB OTG interface 21.Wherein, a USB OTG interface 11 links to each other by usb bus with the 2nd USB OTG21 interface.USB OTG interface 11 on the working controller 1 and the 2nd USB OTG interface 21 on the spare controller can be set at main equipment and slave unit by software program, concrete set-up mode can adopt any way of the master and slave equipment of the existing USB of setting, is not limited at this.
In this working controller 1, dispose the first data communication parameter that the second data communication parameter with spare controller 2 is complementary.Wherein, the second data communication parameter in first messaging parameter of this working controller and the spare controller is that working controller or spare controller communicate required parameters, as comprising in this first messaging parameter and the second communication parameter: parameter informations such as communication protocol, message transmission rates.In the ordinary course of things, when this first data communication parameter and the second data communication parameter were complementary, this primary controller was identical with message transmission rate with communication protocol in the spare controller.Optionally, the communication protocol of spare controller 2 can be the USB2.0 agreement, and when message transmission rate was 480Mbits/s, corresponding, the communication protocol of working controller 1 also was necessary for the USB2.0 agreement, and message transmission rate also is necessary for 480Mbits/s.Like this, second data communication parameter of working controller 1 and the first data communication parameter of spare controller 2 just can be complementary, and working controller 1 could be sent to data in the spare controller 2 according to the first data communication parameter.That is to say that first data parameters of configuration is that the second data communication parameter according to spare controller 2 is provided with in the main control 1.When working controller 1 need be when spare controller sends data, working controller 1 is determined communication mode according to the first data communication parameter, according to the communication mode of determining, pass through usb bus and be sent in the spare controller 2 by the data that a USB OTG interface 11 of working controller 1 will be to be sent.Spare controller 2 receives the data that working controller 1 sends by the 2nd USB OTG interface 21, thereby finishes the data transmission of main control 1 to spare controller 2.
In the present embodiment, working controller 1 is provided with a USB OTG interface 11, and spare controller 2 is provided with 21, two interfaces of the 2nd USB OTG interface and links to each other by usb bus.When main control 1 when spare controller 2 sends data, data to be sent can be passed through two USB OTG interfaces, directly be sent in the spare controller through usb bus, the transmission course of intermediate data does not need the participation of third party device, the complexity of the data transmission between the industrial control unit (ICU) of reduction.
Simultaneously, in the present embodiment, when working controller 1 with after spare controller 2 links to each other by usb bus, owing to disposed the first data communication parameter in the working controller 1, wherein this first data communication parameter be complementary from controlling 2 the second data communication parameter, thereby working controller 1 do not need to adopt the mode of enumerating in traditional USB identifying to remove to discern spare controller 2, and then obtains the second data communication parameter of spare controller 2.Owing to removed the just usually said enumeration process of identifying of working controller 1 and spare controller 2 in the present embodiment, thereby reduced the complexity of data transmission.
In order to improve the speed of data transmission, the present invention also provides another embodiment.
Referring to Fig. 2, show the structural representation of another embodiment of the data interaction system between a kind of industrial control unit (ICU) of the present invention.Different with a last embodiment is in order to improve the speed of data transmission, to reduce the data transmission conflict in the present embodiment.First data communication parameter of working controller 1 and the second data communication parameter of spare controller 2 are complementary, and the quantity of the data buffer that is provided with in the quantity that can also be embodied in this working controller the data buffer that (unlatching) is set and this spare controller is identical.
Working controller 1 is provided with the number of its data buffer zone according to the number of spare controller 2 data buffers, as: working controller 1 and spare controller 2 include two data buffer zones.Two data buffer zones of working controller 1 are first data buffer 12 and second data buffer 13, two data buffer zones of spare controller 2 are the 3rd data buffer 22 and the 4th data buffer 23, wherein, the data that send first data buffer that the 3rd data buffer 22 of spare controller 2 receives working controller 1, the data that send second data buffer that the 4th data buffer 23 of spare controller 2 receives working controller 1.
In the present embodiment, when working controller 1 can adopt the data transfer mode of ping-pong operation when spare controller 2 sends data, show a kind of schematic flow sheet that adopts ping-pong operation mechanism to carry out data transmission referring to Fig. 3.
301: working controller writes data to be sent to first data buffer.
302: the data that working controller control writes to first data buffer send to the 3rd data buffer of spare controller, and working controller writes data to be sent to second data buffer simultaneously.
Wherein, working controller is controlled the USB OTG interface that the data that write to first data buffer are sent to working controller earlier, data to be sent transfer to the 2nd USB OTG interface from control that links to each other with the usb bus other end via an end of the usb bus that links to each other with a USB OTG interface, further transfer to the 3rd data buffer of spare controller.
303: when working controller is finished the data transmission of first data buffer, the data that working controller control writes to second data buffer send to the 4th data buffer of spare controller, meanwhile, working controller writes data to be sent to first data buffer.
Wherein, data in working controller elder generation control second data buffer are sent to a USB OTG interface of working controller, data to be sent transfer to the 2nd USB OTG interface from control that links to each other with the usb bus other end via an end of the usb bus that links to each other with a USB OTG interface, further transfer to the 4th data buffer of spare controller.
Above-mentioned data transmission manner is a round-robin process, finishes the total data transmission until working controller, and this process just stops.
In the present embodiment, data transmission adopts the mode of ping-pong operation, because main control is controlled when the data of first data buffer send and is promptly write data to second data buffer, when the data in first data buffer are sent completely, the working controller data in controller second data buffer immediately sends, compare with adopting data buffer zone transmission data, improved the speed that data send.
In the operating process of reality, sometimes need the data in the spare controller are sent in the working controller, the present invention also provides another embodiment for this reason, shows the structural representation of another embodiment of the data interaction system between a kind of industrial control unit (ICU) of the present invention referring to Fig. 4.
Different with two embodiment in front is also to comprise in this spare controller 2 in the present embodiment: the 5th data buffer 24 and the 6th data buffer 25.The 5th data buffer 24 and the 6th data buffer 25 are used for the data to be sent of spare controller 2 are passed through the 2nd USB OTG interface 21, are sent to a USB OTG interface 11 of working controller 1 via usb bus.
Working controller 1 also comprises: the 7th data buffer 14 and the 8th data buffer 15.Wherein, the 7th data buffer is used for by the data of a USB OTG interface 11 receptions by the 5th data buffer 24 transmissions of spare controller 2.The 8th data buffer is used for by the data of a USB OTG interface 11 receptions by the 6th data buffer 25 transmissions of spare controller 2.
When spare controller 2 need be when working controller 1 sends data, spare controller 2 at first receives the data request command that working controller 1 sends, the USB OTG interface 11 that this data request command can be sent to working controller 1 by first data buffer 12 or second data buffer 22 of working controller 1, and be sent to the 2nd USB OTG interface of spare controller 2 via usb bus, spare controller 2 is determined the data that needs send according to data request command, and adopts ping-pong operation mechanism data to be sent to a USB OTG interface 11 of working controller 1 through the 2nd USB OTG interface 21.
Ping-pong operation mechanism in the present embodiment is identical with the ping-pong operation mechanism principle among the last embodiment.
401: working controller sends data request command to spare controller.
Wherein, this data request command can be sent to the 3rd data buffer of spare controller by first data buffer of working controller, also can be sent to the 4th data buffer of spare controller by second data buffer of working controller.
402: spare controller receives the data command requests of working controller, and determines data to be sent according to this data command requests.
403: spare controller writes data to be sent to the 5th data buffer.
404: the data that spare controller is controlled the 5th data buffer send to the 7th data buffer of working controller, and spare controller writes data to be sent to the 6th data buffer simultaneously.
Wherein, data in spare controller elder generation control the 5th data buffer are sent to the 2nd USB OTG interface of spare controller, data to be sent transfer to a USB OTG interface of the main control that links to each other with the usb bus other end via an end of the usb bus that links to each other with the 2nd USB OTG interface, further transfer to the 7th data buffer of working controller.
405: when spare controller is finished transmission to the data in the 5th data buffer, the data that spare controller is controlled the 6th data buffer send to the 8th data buffer of working controller, meanwhile, spare controller writes data to be sent to the 5th data buffer.
406: execution in step 404 finishes whole data transmissions to be sent until spare controller.
Each embodiment adopts the mode of going forward one by one to describe in this instructions, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (9)
1. the data interaction system between an industrial control unit (ICU), described system comprises first industrial control unit (ICU) and second industrial control unit (ICU) at least, wherein, described first industrial control unit (ICU) is as working controller, described second industrial control unit (ICU) is as spare controller, it is characterized in that described working controller comprises a USB OTG interface, described spare controller comprises the 2nd USB OTG interface;
A described USB OTG interface links to each other by usb bus with described the 2nd USB OTG interface;
Described working controller dispose with described spare controller in the first data communication parameter that is complementary of the second data communication parameter;
Described working controller is used for determining communication mode according to the described first data communication parameter, and according to described communication mode, by a described USB OTG interface data to be sent is transmitted to described spare controller through described usb bus;
Described spare controller is used for receiving the data that described working controller sends by described the 2nd USB OTG interface.
2. system according to claim 1 is characterized in that, the described second data communication parameter comprises: the number of the communication protocol that disposes in the described spare controller, message transmission rate and data buffer;
Accordingly, the described first data communication parameter comprises: the number of the communication protocol that disposes in the described main control, message transmission rate and data buffer.
3. system according to claim 2 is characterized in that, the communication protocol that disposes in described working controller and the described spare controller is the USB2.0 agreement.
4. system according to claim 2 is characterized in that, the message transmission rate of described working controller and the message transmission rate of described spare controller are 480Mbits/s.
5. system according to claim 2 is characterized in that, the data buffer of described working controller comprises at least: the first data buffer swapping and second data buffer;
Accordingly, the data buffer of described spare controller comprises: the 3rd data buffer and the 4th data buffer; Wherein, described the 3rd data buffer is used to receive the data from described first data buffer; Described the 4th data buffer is used to receive the data from described second data buffer.
6. system according to claim 5, it is characterized in that, described working controller is used in the data that will write to described first data buffer writing data to be sent to described second data buffer when the 3rd data buffer of described spare controller sends; When finishing when the data in described first data buffer are sent, the data that control will write to described second data buffer send to the 4th data buffer of described spare controller, and during the data in sending described second data buffer, write data to be sent to described first data buffer.
7. according to claim 1 or 6 described systems, it is characterized in that described spare controller also is used for sending data by described the 2nd USB OTG interface to described working controller;
Described working controller also is used for receiving the data that described spare controller sends by described usb bus by a described USB OTG interface.
8. system according to claim 7 is characterized in that, described spare controller comprises at least: the 5th data buffer and the 6th data buffer;
Accordingly, described working controller comprises: the 7th data buffer and the 8th data buffer; Wherein, described the 7th data buffer is used to receive the data from described the 5th data buffer; Described the 8th data buffer is used to receive the data from described the 6th data buffer.
9. system according to claim 8, it is characterized in that, described spare controller is used in the data that will write to described the 5th data buffer writing data to be sent to described the 6th data buffer when the 7th data buffer of described working controller sends; When finishing when the data in described the 5th data buffer are sent, the data that control will write to described the 6th data buffer send to the 8th data buffer of described spare controller, and during the data in sending described the 6th data buffer, write data to be sent to described the 5th data buffer.
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| CN201310162360.7A CN103217930B (en) | 2013-05-02 | 2013-05-02 | Data interaction system between a kind of industrial control unit (ICU) |
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| CN201310162360.7A CN103217930B (en) | 2013-05-02 | 2013-05-02 | Data interaction system between a kind of industrial control unit (ICU) |
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| CN105518549A (en) * | 2013-08-16 | 2016-04-20 | 通用电气公司 | Systems and methods for interfacing automation control systems to external systems |
| CN106557446A (en) * | 2015-09-28 | 2017-04-05 | 瑞萨电子株式会社 | Bus system |
| CN114265351A (en) * | 2021-12-22 | 2022-04-01 | 上海潜龙电子科技有限公司 | Multifunctional programmable industrial personal computer |
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