CN107979486B - Control system - Google Patents
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- CN107979486B CN107979486B CN201710976413.7A CN201710976413A CN107979486B CN 107979486 B CN107979486 B CN 107979486B CN 201710976413 A CN201710976413 A CN 201710976413A CN 107979486 B CN107979486 B CN 107979486B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
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Abstract
The invention discloses a control system, which comprises control equipment, communication interface equipment, execution equipment, a first channel, a second channel, a third channel and a fourth channel, wherein the execution equipment comprises a first execution unit and a second execution unit, and the first channel is respectively connected with the control equipment and the communication interface equipment; the second channel is respectively connected with the control equipment and the communication interface equipment; the third channel is respectively connected with the communication interface equipment, the first execution unit and the second execution unit; and the fourth channel is connected with the communication interface device, the first execution unit and the second execution unit respectively.
Description
Technical Field
The present invention relates to a control system, and more particularly, to a control system capable of ensuring reliable transmission of communication data.
Background
In practice, in order to improve the data transmission reliability of the control system or the communication system, a dual-system hot standby system or a dual-system hot standby technology is generally adopted. In the dual-system hot standby system, communication interface equipment is divided into a host machine and a standby machine, the host machine is in a working state under normal conditions, the standby machine is in a hot standby state, and when the host machine fails, the standby machine is switched to the host machine to work. The scheme requires synchronous and real-time communication between the host and the standby machine, and if the host is abnormal in function and the heartbeat frame is normally sent, the standby machine cannot acquire the current abnormal condition. Meanwhile, if the switching mechanism fails after the single machine fails, no host works, and system failure is caused. Therefore, in practice, it is necessary to design a control system which can overcome the above-mentioned defects of the dual-system hot standby machine and improve the reliability of the system.
Disclosure of Invention
An object of the present invention is to provide a control system that substantially obviates one or more problems due to limitations and disadvantages of the related art.
According to an aspect of the present invention, a control system is provided, which includes a control device, a communication interface device, an execution device, a first channel, a second channel, a third channel, and a fourth channel, wherein the execution device includes a first execution unit and a second execution unit, and the first channel is connected to the control device and the communication interface device, respectively; the second channel is respectively connected with the control equipment and the communication interface equipment; the third channel is respectively connected with the communication interface equipment, the first execution unit and the second execution unit; and the fourth channel is connected with the communication interface device, the first execution unit and the second execution unit respectively.
Therefore, the control system can realize channel redundancy between the communication equipment and the control equipment and between the communication equipment and the execution equipment, so that the limitation of a double-system hot standby machine in the prior art is eliminated, and the availability and the reliability of the control system are improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and are intended to provide further explanation of the claimed technology.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail embodiments of the present invention with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. The drawings are not to be considered as drawn to scale unless explicitly indicated. In the drawings, like reference numbers generally represent the same component or step. In the drawings:
fig. 1 is a diagram showing an overall configuration of a control system according to the present invention;
fig. 2 is a diagram showing the configuration of a preferred embodiment of the control system according to the present invention;
fig. 3 is a diagram showing the configuration of another preferred embodiment of the control system according to the present invention; and
fig. 4 is a diagram showing the configuration of still another preferred embodiment of the control system according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, exemplary embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a subset of embodiments of the invention and not all embodiments of the invention, with the understanding that the invention is not limited to the example embodiments described herein. All other embodiments, which can be derived by a person skilled in the art from the embodiments described herein without inventive step, are intended to be within the scope of the present invention. In the present specification and the drawings, substantially the same elements and functions will be denoted by the same reference numerals, and repetitive description thereof will be omitted. Moreover, descriptions of functions and constructions well known in the art may be omitted for clarity and conciseness.
First, a control system according to the present invention will be described in detail with reference to fig. 1. The control system described in fig. 1 is very widely used, and in practice, the control system may be a computer system, a communication system, a database system, an automatic control system, a dispatch central control (CTC) system, a Radio Block Center (RBC) system, an Automatic Train Protection (ATP) system, or the like.
In addition, the control system of the present invention can also be applied to the above various systems in the form of subsystems. For example, the control system of the present invention is a subsystem in a dispatch centralized control system, such as a route fault alarm system, which is used to check the route of a train and alarm when a route fault or a fault condition occurs.
Although the above exemplifies an example of the control system of the present invention and its application, the present invention is not limited thereto. Those skilled in the art can select the example and specific application of the control system of the present invention based on the prior art application and practical situation in the field as long as the principle of the present invention can be realized. Hereinafter, for convenience of explanation, a dispatch centering system will be described as an example of the control system
As shown in fig. 1, the control system according to the present invention includes: the device comprises a control device 1, a communication interface device 2, an execution device 3, a first channel A, a second channel B, a third channel C and a fourth channel D, wherein the execution device 3 comprises a first execution unit 31 and a second execution unit 32, and the first channel A is respectively connected with the control device 1 and the communication interface device 2; the second channel B is respectively connected with the control equipment 1 and the communication interface equipment 2; the third channel C is connected to the communication interface device 2, the first execution unit 31, and the second execution unit 32, respectively; and the fourth channel D is connected to the communication interface device 2, the first execution unit 31, and the second execution unit 32, respectively.
Fig. 1 shows a connection relationship of a first channel a and a second channel B with a control device 1 and a communication interface device 2. Fig. 1 shows connection relationships of the third to fourth channels C to D with the communication interface device 2 and the execution device 3.
Specifically, the first channel a is connected to a first port of the control device 1 and a first port of the communication interface device 2, respectively; the second channel B is connected to the second port of the control device 1 and the second port of the communication interface device 2, respectively; the third channel C is connected to the third port of the communication interface device 2, the first port of the first execution unit 31, and the first port of the second execution unit 32, respectively; the fourth channel D is connected to the fourth port of the communication interface device 2, the second port of the first execution unit 31, and the second port of the second execution unit 32, respectively.
The control device 1 is capable of operating and issuing control commands. As shown in fig. 1, the control device 1 is capable of operating and generating a control command, and transmitting the generated control command to the communication interface device 2 through the first channel a and the second channel B. The control device 1 is also able to receive data and perform calculations. As shown in fig. 1, the control device 1 is capable of receiving data from the communication interface device 2 through the first channel a and the second channel B and performing an operation.
The control device 1 may be implemented by a microchip such as a CPU, a GPU or a microprocessor. The control device 1 may also be implemented as a chipset of chips. The control device 1 may also be implemented by a mainframe or a mainframe such as the tianheyi, IBM corporation Z series. With the rapid development of cloud computing, the control device 1 may also be implemented by a cloud computer, a cloud processor, or the like.
Although the example of the control apparatus 1 is exemplarily shown above, the control apparatus 1 of the present invention is not limited to the above examples, and a person skilled in the art may select an implementation manner of the control apparatus 1 according to development of the art as long as the principle of the control apparatus 1 explained in the present invention can be implemented.
The communication interface device 2 is capable of receiving and transmitting control commands issued by the control device 1. As shown in fig. 1, the communication interface device 2 is capable of receiving a control command from the control device 1 through the first channel a and the second channel B and transmitting the control command to the execution device 3 through the third channel C and the fourth channel D (i.e., issuing a control command). The communication interface device 2 is also capable of receiving and transmitting data. As shown in fig. 1, the communication interface device 2 is capable of receiving data through the third channel C, the fourth channel D and transmitting the data to the control device 1 through the first channel a and the second channel B (i.e., uploading data).
The implementation of the communication interface device 2 is different according to different parameters such as interface specification, working mode, transmission rate, transmission distance, etc. For example, the communication interface device 2 may be an IEEE1394 interface, a PCI-e interface, a USB interface, a CoaXPress interface, an SPI interface, an I2C interface, or the like.
The communication interface device 2 may be a single type of interface, e.g. a single USB interface, a single IEEE1394 interface. The communication interface device 2 may also be a plurality of interfaces of a single type, for example a plurality of USB interfaces, a plurality of PCI-e interfaces. The communication interface device 2 may also be a combination of several types of interfaces, for example a combination of an IEEE1394 interface and a USB interface.
Although several examples of the communication interface device 2 have been exemplarily shown above, the present invention is not limited thereto, and a person skilled in the art may select the implementation of the communication interface device 2 of the present invention according to known techniques in the field of communication interfaces and new techniques developed in the future in the field, as long as the principle of the communication interface device 2 of the present invention can be implemented.
The execution device 3 is capable of receiving the control command and executing it. As shown in fig. 1, the execution apparatus 3 can receive and execute a control command through the third channel C and the fourth channel D. The execution device 3 is also capable of generating and transmitting data. As shown in fig. 1, the execution device 3 can generate data and transmit the data to the communication interface device 2 through the third channel C and the fourth channel D.
The execution device 3 may be a peripheral device of the computer system, e.g. a display, a keyboard, a hard disk, etc. The execution device 3 may also be an on-board control device of the train, such as an on-board speed control device, an on-board lighting device, or the like. The actuating device 3 can also be a trackside device, such as a signal collector, a switch controller, a signal light controller, etc.
Although several examples of the actuator 3 have been illustrated above, the present invention is not limited to this, and those skilled in the art can select the implementation manner of the actuator 3 according to the practical application of the control system of the present invention as long as the principle of the present invention can be implemented.
The execution device 3 comprises a first execution unit 31 and a second execution unit 32. The first execution unit 31 and the second execution unit 32 can complete the same execution command and generate the same data and transmit the data to the communication interface device 2.
Preferably, the first execution unit 31 is an execution device host, and the second execution unit 32 is an execution device parallel. That is, the first execution unit 31 and the second execution unit 32 may be regarded as a host and a parallel in the execution device 3, respectively. Both of which enable data redundancy of the control system. That is, by providing the first execution unit 31 and the second execution unit 32, when one of the execution units fails, the other execution unit can still complete executing commands and generating data, thereby improving the usability and reliability of the control system of the present invention.
The data generated by the first execution unit 31 and the second execution unit 32 may be transmitted in the form of data packets. For example, as shown in fig. 1, assuming that the first execution unit 31 generates a data packet X and the second execution unit 32 generates a data packet Y, the first execution unit 31 supplies the data packet X to the third channel C through the first port thereof and supplies the data packet X to the fourth channel D through the second port thereof; the second execution unit 32 provides the data packet Y to the third channel C through its first port and provides the data packet Y to the fourth channel D through its second port. Thus, the communication interface device 2 receives the data packet X and the data packet Y (first group of data packets) at the third port thereof, and receives the data packet X and the data packet Y (second group of data packets) at the fourth port thereof.
The communication interface device 2 may use different processing methods for the two sets of packets.
The first processing is that the communication interface device 2 transmits the two sets of packets to the control device 1 through the first channel a and the second channel B. For example, the communication interface device 2 transmits a first set of packets through its first port and transmits a second set of packets through its second port. In this case, the control apparatus 1 receives the two sets of data packets through the first channel a and the second channel B, and then the control apparatus 1 performs redundancy processing (described in detail below) on the two sets of data packets again.
Another way of doing this is for the communication interface device 2 to filter the two sets of data packets, leaving only one set of data packets and provide the set of data packets to the control device 1 via the first channel a and the second channel B. For example, the communication interface apparatus 2 leaves the first group of packets, and supplies the packet X of the first group of packets to the control apparatus 1 through the first lane a, and supplies the packet Y of the first group of packets to the control apparatus 1 through the second lane B. Thus, the control apparatus 1 finally obtains the packet X from the first execution unit 31 and the packet Y from the second execution unit 32. This processing method can achieve both channel redundancy and data redundancy and reduce the data transmission amount of the communication interface device 2 and the control device 1.
Any one of the first to fourth channels a to D may be implemented by a bus. The implementation of the bus may be selected according to the bus standard, I/O configuration, type of data being transferred, type of communication interface device, etc. For example, the bus may be a PCI bus, ISA bus, USB bus, or the like. Although the above illustrates several examples in which the first to fourth channels a to D are implemented by a bus, the present invention is not limited thereto, and those skilled in the art may adopt the existing technologies known in the bus field or new technologies developed in the future to modify and select the bus implementation as long as the principles of the first to fourth channels a to D of the present invention can be implemented.
Any one of the first to fourth channels a to D may be implemented by an optical fiber. Implementations of optical fibers may be selected based on light criteria, transmission distance, type of communication interface device, etc. For example, the optical fiber may be a multimode fiber, a single mode fiber, a dispersion shifted fiber, or the like. Although the above illustrates several examples in which the first to fourth channels a to D are implemented by optical fibers, the present invention is not limited thereto, and those skilled in the art can modify and select the implementation of optical fibers by using the existing technologies known in the optical fiber field or new technologies developed in the future, as long as the principles of the first to fourth channels a to D of the present invention can be implemented.
Any one of the first to fourth channels a to D may be implemented by a wireless transmission manner. That is, the first to fourth channels a to D may not be implemented by hardware lines like the above bus and optical fiber, but implement transmission and reception of data and control commands by means of wireless transmission. Accordingly, the channel adopting the wireless transmission mode should be provided with a wireless transmission unit at a corresponding port of the corresponding control device 1, communication interface device 2 and/or execution device 3, so as to complete the transmission of the control command and/or data between the devices.
For example, if the first channel a adopts a wireless transmission mode, the first channel a is provided with a first wireless transmission unit at the first port of the control device 1, and is provided with a second wireless transmission unit at the first port of the communication interface device 2, and the first wireless transmission unit and the second wireless transmission unit realize matching through a password or a communication handshake mode so as to ensure the transmission accuracy and confidentiality of data and/or control commands. Similarly, if the first channel B adopts a wireless transmission mode, the first channel B is provided with a third wireless transmission unit at the second port of the control device 1, and is provided with a fourth wireless transmission unit at the second port of the communication interface device 2, and the third wireless transmission unit and the fourth wireless transmission unit realize matching through a password or a communication handshake mode, so as to ensure the transmission accuracy and confidentiality of data and/or control commands.
Although the first channel a to the fourth channel D are implemented by three ways of bus, optical fiber and wireless transmission, the invention is not limited to this, and those skilled in the art can also select the implementation way of each channel of the invention according to the existing technology known in the data transmission field or the new technology developed in the future as long as the principle of the invention can be implemented.
In addition, the four channels of the first channel a to the fourth channel D are not necessarily implemented uniformly by one implementation. For example, the first channel a and the second channel B are both implemented by using buses, and the third channel C and the fourth channel D are both implemented by wireless transmission. For another example, the first channel a is implemented by a bus, the second channel B is implemented by an optical fiber, and the third channel C and the fourth channel D are implemented by a wireless transmission method. Although the above illustrates the case where the first to fourth channels a to D are implemented by different ways, the present invention is not limited to this, and those skilled in the art can select and combine the implementations of the first to fourth channels a to D according to actual needs as long as the principles of the present invention can be implemented.
As shown in fig. 1, the first channel a and the second channel B constitute a dual channel redundancy. Therefore, when any one of the first channel A and the second channel B fails (for example, the first channel A is realized by a bus, and the bus is broken), the other channel can continue to ensure the transmission of data and control commands, so that the availability of the system and the reliability of data transmission are improved.
As shown in fig. 1, the third channel C and the fourth channel D constitute a dual channel redundancy. Therefore, when any one of the third channel C and the fourth channel D fails (for example, the third channel C is implemented by a wireless transmission mode, and a wireless transmission unit at the third port of the communication interface device 2 fails), the other one can continue to ensure the transmission of data and control commands, thereby improving the availability of the system and the reliability of data transmission.
It can be seen that the first channel a and the second channel B form a channel redundancy, the third channel C and the fourth channel D form a channel redundancy, and the first execution unit 31 and the second execution unit 32 form a data redundancy. These channel redundancy and data redundancy together ensure the transmission of data and control commands in the control system, thereby improving the availability and reliability of the system.
A preferred embodiment of the control system of the present invention will be described in detail with reference to fig. 2. Fig. 2 is a diagram showing the configuration of a preferred embodiment of the control system according to the present invention.
As shown in fig. 2, according to the control system of the present invention, preferably, the control apparatus 1 includes a first control unit 11 and a second control unit 12, wherein the first channel a is connected with the first control unit 11 and the second control unit 12, respectively; the second channel B is connected to the first control unit 11 and the second control unit 12, respectively.
Specifically, the first channel a is connected to a first port of the first control unit 11 and a first port of the second control unit 12, respectively; the second channel B is connected to a second port of the first control unit 11 and a second port of the second control unit 12, respectively; the first channel A is connected with a first port of the communication interface device 2; the second channel B is connected to the second port of the communication interface device 2.
The preferred embodiment differs from the control system described above with reference to fig. 1 in the following two aspects: on the one hand, the control device 1 comprises a first control unit 11 and a second control unit 12; the other is the connection relationship between the first channel a and the second channel B and the first control unit 11 and the second control unit 12.
In the present embodiment, the first channel a can supply control commands from the first control unit 11 and the second control unit 12 to the communication interface device 2, respectively, and the second channel B can supply control commands from the first control unit 11 and the second control unit 12 to the communication interface device 2, respectively. The first channel a can supply data from the communication interface device 2 to the first control unit 11 and the second control unit 12, respectively, and the second channel B can supply data from the communication interface device 2 to the first control unit 11 and the second control unit 12, respectively.
The first control unit 11 and the second control unit 12 are able to process the same data and generate the same commands. That is, the first control unit 11 and the second control unit 12 can each operate and each generate the same control command, and supply the generated control commands to the first channel a and the second channel B, respectively. The first control unit 11 and the second control unit 12 can also each receive data and perform an operation. Therefore, the relationship of both the first control unit 11 and the second control unit 12 can also be regarded to some extent as the relationship of the master and the parallel in the control apparatus 1. Thus, both the first control unit 11 and the second control unit 12 together with the first execution unit 31 and the second execution unit 32 achieve data redundancy of the control system according to the invention, thereby improving the availability and reliability of the control system.
In addition, in the preferred embodiment, the communication interface device 2, the execution device 3, the third channel C, and the fourth channel D are the same as or similar to the corresponding components described above with reference to fig. 1, and are not described again here. The implementation of the first to fourth channels a to D is also similar to that described above with reference to fig. 1, and is not described here again.
Further, in the preferred embodiment, the first control unit 11 is capable of performing redundant processing on data from the first execution unit 31 and the second execution unit 32; and the second control unit 12 can perform redundancy processing on the data from the first execution unit 31 and the second execution unit 32.
Specifically, the first control unit 11 can receive data from the first execution unit 31 and the second execution unit 32, wherein, in general, data provided by both the first execution unit 31 as the master and the first execution unit 32 as the parallel are the same, so the first control unit 11 can first determine whether the data provided by the first execution unit 31 and the data provided by the second execution unit 32 are the same, and if so, perform an operation on the data provided by either one of the two, that is, it is equivalent to selecting one of the data provided by the first execution unit 31 and the data provided by the second execution unit 32, and discard the other one. The same principle applies to the second control unit 12.
After the first control unit 11 and the second control unit 12 each perform the operation, the control apparatus 1 can compare the operation result of the first control unit 11 with the operation result of the second control unit 12, and if the operation results of both coincide, can output or operate the operation result of either one of the both as a final operation result.
Similar to that described above with reference to fig. 1, in the present preferred embodiment, the communication interface apparatus 2 may also receive two sets of data packets, i.e., the first set of data packets (data packet X and data packet Y) and the second set of data packets (data packet X and data packet Y), from the first execution unit 31 and the second execution unit 32.
The communication interface device 2 can perform different processing on the two sets of packets.
The first processing is that the communication interface device 2 transmits the two sets of packets to the first control unit 11 and the second control unit 12 through the first channel a and the second channel B, respectively. For example, the communication interface apparatus 2 transmits a first group of packets through its first port and the first channel a, so that the first control unit 11 and the second control unit 12 receive the first group of packets, respectively; the communication interface device 2 transmits the second group of packets through its second port and the second channel B so that the first control unit 11 and the second control unit 12 receive the first group of packets, respectively. In this case, the first control unit 11 receives two sets of data packets, and the second control unit 12 receives two sets of data packets, and then the first control unit 11 and the second control unit 12 perform redundancy processing on the received two sets of data packets.
Another way of handling this is that the communication interface device 2 filters the two sets of packets, leaves only one set of packets and supplies the set of packets to the first control unit 11 and the second control unit 12 through the first channel a and the second channel B. For example, the communication interface apparatus 2 leaves a first group of packets, and supplies the packets X in the first group of packets to the first control unit 11 and the second control unit 12 through the first channel a, respectively; the communication interface apparatus 2 supplies the data packet Y in the first group of data packets to the first control unit 11 and the second control unit 12 through the second channel B, respectively. Thus, the first control unit 11 and the second control unit 12 each obtain the data packet X and the data packet Y. This processing method can achieve both channel redundancy and data redundancy, and reduce the data transmission amount of the communication interface device 2 and the control device 1, and reduce the data processing amount of the first control unit 11 and the second control unit 12.
Another preferred embodiment of the control system of the present invention will be described in detail with reference to fig. 3. Fig. 3 is a diagram showing the configuration of another preferred embodiment of the control system according to the present invention.
As shown in fig. 3, according to the control system of the present invention, preferably, the communication interface apparatus 2 includes a first communication interface unit 21 and a second communication interface unit 22, wherein the first channel a is connected to the first communication interface unit 21 and the second communication interface unit 22, respectively; the second channel B is connected to the first communication interface unit 21 and the second communication interface unit 22, respectively; the third channel C is connected to the first communication interface unit 21 and the second communication interface unit 22, respectively; the fourth channel D is connected to the first communication interface unit 21 and the second communication interface unit 22, respectively.
Specifically, the first channel a is connected to a first port of the first communication interface unit 21 and a first port of the second communication interface unit 22, respectively; the second channel B is connected to the second port of the first communication interface unit 21 and the second port of the second communication interface unit 22, respectively; the third channel C is connected to the third port of the first communication interface unit 21 and the third port of the second communication interface unit 22, respectively; the fourth channel D is connected to the fourth port of the first communication interface unit 21 and the fourth port of the second communication interface unit 22, respectively.
The preferred embodiment differs from the control system described above with reference to fig. 1 in the following two aspects: on the one hand, the communication interface device 2 includes a first communication interface unit 21 and a second communication interface unit 22; the other is the connection relationship between the first channel a to the fourth channel D and the first communication interface unit 11 and the second communication interface unit 22.
In the present embodiment, the first channel a can supply control commands from the control device 1 to the first communication interface unit 21 and the second communication interface unit 22, respectively, and the second channel B can supply control commands from the control device 1 to the first communication interface unit 21 and the second communication interface unit 22, respectively. The first channel a can supply data from the first communication interface unit 21 and the second communication interface unit 22 to the control device 1, respectively, and the second channel B can supply data from the first communication interface unit 21 and the second communication interface unit 22 to the control device 1, respectively.
The third channel C is connected to the first communication interface unit 21 and the first execution unit 31, respectively, and the third channel C is connected to the second communication interface unit 22 and the second execution unit 32, respectively. The fourth channel D is connected to the first communication interface unit 21 and the first execution unit 31, respectively, and the fourth channel D is connected to the second communication interface unit 22 and the second execution unit 32, respectively.
As can be seen, in the present embodiment, the first communication interface unit 21 and the second communication interface unit 22 constitute channel redundancy. Therefore, when any one of the first communication interface unit 21 and the second communication interface unit 22 fails, the other can continue to ensure the issuance of control commands (from the control device 1 to the execution device 3) and the uploading of data (from the execution device 3 to the control device 1), thereby improving the availability of the control system and the reliability of data transmission.
Furthermore, in this preferred embodiment, the control device 1 and the execution device 3 are identical or similar to the corresponding components described above with reference to fig. 1 and are not described here again. The implementation of the first to fourth channels a to D is also similar to that described above with reference to fig. 1, and is not described here again.
Furthermore, in the preferred embodiment, the control device 1 is capable of performing redundant processing on data from the first execution unit 31 and the second execution unit 32.
Specifically, the control apparatus 1 can first determine whether or not the data supplied from the first execution unit 31 and the data supplied from the second execution unit 32 match, and if they match, perform an operation on the data supplied from either one of the two (that is, it is equivalent to selecting one of the data supplied from the first execution unit 31 and the data supplied from the second execution unit 32 and discarding the other), and output or operate the operation result as a final operation result.
Similar to that described above with reference to fig. 1 and 2, in the present preferred embodiment, the first communication interface unit 21 may receive two sets of data packets, i.e., a first set of data packets (data packet X and data packet Y) and a second set of data packets (data packet X and data packet Y), from the first execution unit 31 and the second execution unit 32. The second communication interface unit 22 may receive two sets of data packets, i.e., a first set of data packets (data packet X and data packet Y) and a second set of data packets (data packet X and data packet Y), from the first execution unit 31 and the second execution unit 32.
The communication interface device 2 can perform different processing on the two sets of packets.
The first processing is that the first communication interface unit 21 supplies the first group of packets to the control device 1 through the first channel a, and supplies the second group of packets to the control device 1 through the second channel B; the second communication interface unit 22 supplies the first group of packets to the control device 1 through the first channel a, and supplies the second group of packets to the control device 1 through the second channel B. In this case, the control apparatus 1 receives four sets of data packets in total, and then the control apparatus 1 performs redundancy processing on the four sets of data packets again.
In the second processing manner, the first communication interface unit 21 filters the two sets of packets to leave one set of packets, for example, the first set of packets, and then provides the packet X of the first set of packets to the control device 1 through the first channel a, and provides the packet Y of the first set of packets to the control device 1 through the second channel B. The second communication interface unit 22 also performs the same processing. In this case, the control apparatus 1 receives two sets of packets in total. This processing method can achieve both channel redundancy and data redundancy, and reduce the data transmission amount of the communication interface device 2 and the control device 1, and reduce the data processing amount of the control device 1.
A further preferred embodiment of the control system according to the invention is described in detail below with reference to fig. 4. Fig. 4 is a diagram showing the configuration of still another preferred embodiment of the control system according to the present invention.
As shown in fig. 4, according to the control system of the present invention, preferably, the control device 1 includes a first control unit 11 and a second control unit 12, and the communication interface device 2 includes a first communication interface unit 21 and a second communication interface unit 22, where a first channel a is connected to the first control unit 11 and the second control unit 12, respectively, a second channel B is connected to the first control unit 11 and the second control unit 12, respectively, the first channel a is connected to the first communication interface unit 21 and the second communication interface unit 22, respectively, the second channel B is connected to the first communication interface unit 21 and the second communication interface unit 22, respectively, a third channel C is connected to the first communication interface unit 21 and the second communication interface unit 22, respectively, and a fourth channel D is connected to the first communication interface unit 21 and the second communication interface unit 22, respectively.
Specifically, the first channel a is connected to a first port of the first control unit 11 and a first port of the second control unit 12, the second channel B is connected to a second port of the first control unit 11 and a second port of the second control unit 12, the first channel a is connected to a first port of the first communication interface unit 21 and a first port of the second communication interface unit 22, the second channel B is connected to a second port of the first communication interface unit 21 and a second port of the second communication interface unit 22, the third channel C is connected to a third port of the first communication interface unit 21 and a third port of the second communication interface unit 22, and the fourth channel D is connected to a fourth port of the first communication interface unit 21 and a fourth port of the second communication interface unit 22.
It can thus be seen that the present embodiment differs from the embodiment described above with reference to fig. 2 in that: one is that the communication interface device 2 includes a first communication interface unit 21 and a second communication interface unit 22; the second is the connection relationship between the first channel A to the fourth channel D and other components.
Specifically, it is preferable that the first channel a is capable of supplying the control command from the first control unit 11 to the first communication interface unit 21 and the second communication interface unit 22, respectively, and is capable of supplying the control command from the second control unit 12 to the first communication interface unit 21 and the second communication interface unit 22, respectively; and the second channel B is capable of supplying the control command from the first control unit 11 to the first communication interface unit 21 and the second communication interface unit 22, respectively, and is capable of supplying the control command from the second control unit 12 to the first communication interface unit 21 and the second communication interface unit 22, respectively. It can be seen that the first channel a and the second channel B constitute a dual channel redundancy. Therefore, when any one of the first channel A and the second channel B fails, the other channel can continue to ensure the issuing of the control command, thereby improving the availability and reliability of the system. Moreover, the first control unit 11 and the second control unit 12 and the first communication interface unit 21 and the second communication interface unit 22 form control command redundancy, so that when any one of the first control unit 11 or the second control unit 12 fails, the other can continue to ensure the issuing of the control command, thereby improving the availability and reliability of the system; when any one of the first communication interface unit 21 or the second communication interface unit 22 fails, the other can continue to ensure the issuing of the control command, thereby improving the availability and reliability of the system.
Further, it is preferable that the first channel a is capable of supplying data from the first communication interface unit 21 to the first control unit 11 and the second control unit 12, respectively, and is capable of supplying data from the second communication interface unit 22 to the first control unit 11 and the second control unit 12, respectively; and the second channel B can supply the data from the first communication interface unit 21 to the first control unit 11 and the second control unit 12, respectively, and can supply the data from the second communication interface unit 22 to the first control unit 11 and the second control unit 12, respectively. It can be seen that the first channel a and the second channel B constitute a dual channel redundancy. Therefore, when any one of the first channel A and the second channel B fails, the other channel can continuously ensure the uploading of data, and the availability and reliability of the system are improved. Moreover, the first communication interface unit 21 and the second communication interface unit 22 form data redundancy, so when any one of the first communication interface unit 21 or the second communication interface unit 22 fails, the other one can continuously ensure the uploading of data, thereby improving the availability and reliability of the system.
Preferably, the third channel C can provide the control command from the first communication interface unit 21 to the first execution unit 31 and the second execution unit 32, respectively, the third channel C can provide the control command from the second communication interface unit 22 to the first execution unit 31 and the second execution unit 32, respectively, the fourth channel D can provide the control command from the first communication interface unit 21 to the first execution unit 31 and the second execution unit 32, respectively, and the fourth channel D can provide the control command from the second communication interface unit 22 to the first execution unit 31 and the second execution unit 32, respectively. It can be seen that the third channel C and the fourth channel D constitute a dual channel redundancy. Therefore, when any one of the third channel C and the fourth channel D has a fault, the other one can continuously ensure the issuing of the control command, thereby improving the availability and reliability of the system. Moreover, the first communication interface unit 21 and the second communication interface unit 22 form control command redundancy, so that when any one of the first communication interface unit 21 or the second communication interface unit 22 fails, the other one can continuously guarantee the issuing of the control command, thereby improving the availability and reliability of the system.
Preferably, the third channel C can provide the data from the first execution unit 31 to the first communication interface unit 21 and the second communication interface unit 22, respectively, the third channel C can provide the data from the second execution unit 32 to the first communication interface unit 21 and the second communication interface unit 22, respectively, the fourth channel D can provide the data from the first execution unit 31 to the first communication interface unit 21 and the second communication interface unit 22, respectively, and the fourth channel D can provide the data from the second execution unit 32 to the first communication interface unit 21 and the second communication interface unit 22, respectively. It can be seen that the third channel C and the fourth channel D constitute a dual channel redundancy. Therefore, when any one of the third channel C and the fourth channel D fails, the other one can continuously ensure the uploading of data, and the availability and reliability of the system are improved. Moreover, the first communication interface unit 21 and the second communication interface unit 22 form data redundancy, so when any one of the first communication interface unit 21 or the second communication interface unit 22 fails, the other one can continuously ensure the uploading of data, thereby improving the availability and reliability of the system.
Therefore, looking at the preferred embodiment shown in FIG. 4 in general, when one of the execution units fails, the other execution unit can still complete executing the command and generating data; when one of the communication interface units fails, the other communication interface unit can still finish the uploading of data and the issuing of control commands; when one of the first channel A and the second channel B has a fault, the other channel can still finish the uploading of data and the issuing of a control command; when one of the third channel C and the fourth channel D has a fault, the other channel can still finish the uploading of data and the issuing of control commands. Thereby increasing the availability and reliability of the control system of the present invention.
Similar to that described above with reference to fig. 1, 2, and 3, in the present preferred embodiment, the first communication interface unit 21 may receive two sets of data packets, i.e., the first set of data packets (data packet X and data packet Y) and the second set of data packets (data packet X and data packet Y), from the first execution unit 31 and the second execution unit 32. The second communication interface unit 22 may receive two sets of data packets, i.e., a first set of data packets (data packet X and data packet Y) and a second set of data packets (data packet X and data packet Y), from the first execution unit 31 and the second execution unit 32.
Similarly to the above description, the first communication interface unit 21 may supply the received two sets of packets to the first channel a and the second channel B, respectively, and the second communication interface unit 22 may supply the received two sets of packets to the first channel a and the second channel B, respectively. In this case, the first control unit 11 receives four sets of data packets in total, and the second control unit 12 receives four sets of data packets in total, and then the first control unit 11 and the second control unit 12 perform redundancy processing, respectively.
Alternatively, the first control unit 21 and the second control unit 22 may first perform filtering processing on two sets of received data packets, retain only one set of data packets, and then supply the data packet X and the data packet Y in the set of data packets to the first channel a and the second channel B, respectively, in which case the first control unit 11 and the second control unit 12 each receive two sets of data packets. This makes it possible to achieve both channel redundancy and data redundancy, and to reduce the data transmission amount of the communication interface device 2 and the control device 1, and to reduce the data processing amount of the control device 1.
Further, in the preferred embodiment, the first control unit 11 is capable of performing redundant processing on data from the first execution unit 31 and the second execution unit 32; and the second control unit 12 can perform redundancy processing on the data from the first execution unit 31 and the second execution unit 32.
Specifically, the first control unit 11 can receive data from the first execution unit 31 and the second execution unit 32, where, in general, data provided by both the first execution unit 31 as the master and the first execution unit 32 as the parallel are the same, so the first control unit 11 can first determine whether the data provided by the first execution unit 31 and the data provided by the second execution unit 32 match, and if so, perform an operation on the data provided by either one of the two. The same principle applies to the second control unit 12. After the first control unit 11 and the second control unit 12 each perform the operation, the control apparatus 1 can compare the operation result of the first control unit 11 with the operation result of the second control unit 12, and if the operation results of both coincide, can output or operate the operation result of either one of the both as a final operation result.
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Those skilled in the art will understand that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art may modify the technical solutions described in the foregoing embodiments or may substitute some or all of the technical features; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (8)
1. A control system comprising a control device, a communication interface device, an execution device, a first channel, a second channel, a third channel, and a fourth channel, wherein the execution device comprises a first execution unit and a second execution unit,
the first channel is respectively connected with the control equipment and the communication interface equipment;
the second channel is respectively connected with the control equipment and the communication interface equipment;
the third channel is respectively connected with the communication interface equipment, the first execution unit and the second execution unit; and is
The fourth channel is connected with the communication interface device, the first execution unit and the second execution unit respectively;
the control equipment comprises a first control unit and a second control unit, wherein the first control unit and the second control unit are in the relation of a host and a parallel machine, and can respectively calculate and respectively generate the same control command and respectively provide the generated control command to a first channel and a second channel;
the first execution unit is an execution device host, and the second execution unit is an execution device parallel operation;
the communication interface device comprises a first communication interface unit and a second communication interface unit;
the first control unit is capable of performing redundancy processing on data from the first execution unit and the second execution unit; and
the second control unit is capable of performing redundancy processing on data from the first execution unit and the second execution unit; wherein,
the first execution unit and the second execution unit are capable of completing the same execution command, and generating the same data, and transmitting the data to the communication interface device;
the data generated by the first execution unit and the second execution unit are transmitted in the form of data packets;
the first communication interface unit and the second communication interface unit can receive two groups of data packets from the first execution unit and the second execution unit, wherein each group of data packets comprises a data packet X and a data packet Y;
the first communication interface unit provides the received two groups of data packets to the first channel and the second channel respectively, and the second communication interface unit provides the received two groups of data packets to the first channel and the second channel respectively;
the first control unit receives four sets of data packets in total, and the second control unit receives four sets of data packets in total.
2. The control system of claim 1,
the first channel is respectively connected with the first control unit and the second control unit; and,
the second channel is connected with the first control unit and the second control unit respectively.
3. The control system of claim 2,
the first channel is respectively connected with the first communication interface unit and the second communication interface unit;
the second channel is respectively connected with the first communication interface unit and the second communication interface unit;
the third channel is respectively connected with the first communication interface unit and the second communication interface unit; and is
The fourth channel is connected with the first communication interface unit and the second communication interface unit respectively.
4. The control system of claim 3,
the first channel is capable of supplying a control command from the first control unit to the first communication interface unit and the second communication interface unit, respectively, and is capable of supplying a control command from the second control unit to the first communication interface unit and the second communication interface unit, respectively; and
the second channel is capable of supplying a control command from the first control unit to the first communication interface unit and the second communication interface unit, respectively, and is capable of supplying a control command from the second control unit to the first communication interface unit and the second communication interface unit, respectively.
5. The control system of claim 3,
the first channel is capable of providing data from the first communication interface unit to the first control unit and the second control unit, respectively, and is capable of providing data from the second communication interface unit to the first control unit and the second control unit, respectively; and
the second channel is capable of supplying data from the first communication interface unit to the first control unit and the second control unit, respectively, and is capable of supplying data from the second communication interface unit to the first control unit and the second control unit, respectively.
6. The control system of claim 3,
the third channel is capable of providing control commands from the first communication interface unit to the first execution unit and the second execution unit, respectively; the third channel can provide the control command from the second communication interface unit to the first execution unit and the second execution unit respectively; the fourth channel is capable of providing control commands from the first communication interface unit to the first execution unit and the second execution unit, respectively; the fourth channel is capable of providing control commands from the second communication interface unit to the first execution unit and the second execution unit, respectively.
7. The control system of claim 3,
the third channel is capable of providing data from the first execution unit to the first communication interface unit and the second communication interface unit, respectively; the third channel is capable of providing data from the second execution unit to the first communication interface unit and the second communication interface unit, respectively; the fourth channel is capable of providing data from the first execution unit to the first communication interface unit and the second communication interface unit, respectively; the fourth channel is capable of providing data from the second execution unit to the first communication interface unit and the second communication interface unit, respectively.
8. The control system of claim 1,
the communication interface apparatus includes a first communication interface unit and a second communication interface unit, wherein,
the first channel is respectively connected with the first communication interface unit and the second communication interface unit;
the second channel is respectively connected with the first communication interface unit and the second communication interface unit;
the third channel is respectively connected with the first communication interface unit and the second communication interface unit; and is
The fourth channel is connected with the first communication interface unit and the second communication interface unit respectively.
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