Boiler fan communication network redundant system

Abstract

The utility model relates to the technical field of automatic control systems, and particularly provides a boiler fan communication network redundancy system, which comprises a master station controller, a slave station controller, an electric cabinet, a boiler fan and a looped network, the master station controller, the slave station controller, the electric cabinet and the boiler fan are all electrically connected with the looped network. According to the invention, when a single photoelectric converter fails, equipment jumping caused by abnormity of the single photoelectric converter or interruption of a network line can be avoided.

Description

Technical Field

[0001] The present disclosure relates to the technical field of automatic control systems, and in particular to a boiler fan communication network redundancy system. Background Art

[0002] The boiler fan uses coupling redundancy. In this network, if one end of the PA COUPLER or AFS bus is short-circuited or disconnected, it will not affect the normal operation of the entire Pau bus. However, if the PA bus below the AFS is short-circuited or disconnected and the bus terminal is lost, a non-redundant system failure will occur.

[0003] Please refer to Figure 1 ,exist Figure 1 In the existing field photoelectric converter, there is no redundant design. A single host computer malfunction, equipment abnormality or network disconnection directly causes a large area of ​​field equipment to stop. In particular, when OLM52 fails, the equipment under the MCC cabinet will trip and stop, which will in turn affect the OLM53 communication interruption and the boiler fan trip and stop.

[0004] How to avoid large-scale shutdown of field equipment caused by malfunction of a single host computer, equipment abnormality or network disconnection is one of the important issues that need to be solved in this field. Summary of the invention

[0005] The present disclosure is proposed in view of the above problems. The present disclosure provides a boiler blower communication network redundancy system.

[0006] According to one aspect of the present disclosure, there is provided a boiler fan communication network redundancy system, which includes a master station controller, a slave station controller, an electric cabinet, a boiler fan and a ring network;

[0007] The master station controller, the slave station controller, the electric cabinet and the boiler fan are all electrically connected to the ring network.

[0008] According to another aspect of the present disclosure, the ring network is formed by connecting the first router, the first photoelectric converter, the second photoelectric converter, the second router, the third router, the third photoelectric converter, the fourth photoelectric converter, the fifth photoelectric converter and the fourth router in sequence end to end;

[0009] The master station controller is connected to the first photoelectric converter;

[0010] The slave station controller is connected to the second photoelectric converter;

[0011] The electric cabinet is connected to the third photoelectric converter;

[0012] The boiler fan is connected to the fifth photoelectric converter.

[0013] According to another aspect of the present disclosure, a reserved interface is provided on the fourth optoelectronic converter, and the reserved interface is used to connect an expansion device.

[0014] According to another aspect of the present disclosure, the first router, the first optoelectronic converter, the second optoelectronic converter, the second router, the third router, the third optoelectronic converter, the fourth optoelectronic converter, the fifth optoelectronic converter, and the fourth router in the ring network are connected by a bus.

[0015] According to another aspect of the present disclosure, the bus is a PA bus.

[0016] As will be described in detail below, in the boiler fan communication network redundancy system according to an embodiment of the present disclosure, by setting up a ring network, the master station controller, the slave station controller, the electric cabinet, and the boiler fan are connected to the ring network, so that the master station controller and the slave station controller are backed up to each other, and multiple optoelectronic converters are connected in series. When a single optoelectronic converter fails, equipment jitter will not occur due to the abnormality of a single optoelectronic converter or the interruption of the network line.

[0017] It should 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By describing the embodiments of the present disclosure in more detail in conjunction with the accompanying drawings, the above and other objects, features, and advantages of the present disclosure will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present disclosure, and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the present disclosure and do not constitute a limitation to the present disclosure. In the drawings, the same reference numerals generally represent the same components or steps.

[0019] Figure 1 is a schematic diagram of the prior art;

[0020] Figure 2 is a structural block diagram of the system proposed by the present disclosure;

[0021] Figure 3 is a schematic diagram of the system proposed by the present disclosure.

[0022] DESCRIPTION OF THE REFERENCE NUMERALS

[0023] 1 - Master station controller, 2 - Slave station controller, 3 - Electric cabinet, 4 - Boiler fan, 5 - Ring network, 6 - Expansion device;

[0024] 51 - First router, 52 - First optical - electrical converter, 53 - Second optical - electrical converter, 54 - Second router, 55 - Third router, 56 - Third optical - electrical converter, 57 - Fourth optical - electrical converter, 58 - Fifth optical - electrical converter, 59 - Fourth router. Detailed implementation

[0025] To make the objectives, technical solutions, and advantages of the present disclosure more apparent, the exemplary embodiments according to the present disclosure will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments of the present disclosure. It should be understood that the present disclosure is not limited by the exemplary embodiments described herein.

[0026] Please refer to Figure 1 , in the prior art, the master station controller 1 and the slave station controller 2 are mutually backed up. The communication between the master station controller 1 and the slave station controller 2 is based on the master - slave principle. The master station controller 1 has bus control rights, periodically reads the input information of the slave station controller 2 and periodically sends output information to the slave station controller 2. The slave station controller 2 on the bus only makes relevant responses or replies to the master station controller 1, and the communication data is monitored by the master station controller 1 and the slave station controller 2. When the master station controller 1 fails, it will automatically switch to the slave station controller 2 to issue control instructions to prevent the boiler fan from malfunctioning due to the failure of the master station controller 1 or the corresponding network.

[0027] The communication is realized through the DP communication method. DP communication is a high - speed and low - cost communication method for device - level control systems and distributed I / O. Its full name is PROFBUS - DP. It and PROF BUS - FMS together form the PROFBUS standard. The PROFBUS - DP system has two bus topologies. One is RS - 485, which uses shielded twisted - pair wires, and the topology is a bus type. The communication rate is 9.6 kb / s (1200 m) -1 , 2 kb / s (100 m) -1 , with a maximum of 32 nodes per segment, does not support bus power supply. The other uses optical fiber and is used in occasions with high requirements for electromagnetic compatibility and long distances.

[0028] In Figure 1 , since the electrical cabinet and the boiler fan are both connected to the bus through the same optical - electrical converter, when this optical - electrical converter fails, it will cause the equipment under MCC to trip, and at the same time, it will also affect the interruption of OLM53 communication and the tripping of the boiler fan.

[0029] To solve the above problems, please refer to Figure 2 and Figure 3, the present disclosure proposes a communication network redundancy system for a boiler fan 4, which includes a master station controller 1, a slave station controller 2, an electrical cabinet 3, a boiler fan 4, and a ring network 5.

[0030] The master station controller 1, the slave station controller 2, the electrical cabinet 3, and the boiler fan 4 are all electrically connected to the ring network 5.

[0031] In specific implementation, since both the electrical cabinet 3 and the boiler fan 4 are directly connected to the ring network 5, therefore, neither at the electrical cabinet 3 nor at the boiler fan 4 will equipment jitter occur due to the abnormality of a single optical - electric converter or the interruption of the network line.

[0032] Specifically, to implement the ring network 5, the ring network 5 is formed by sequentially connecting a first router 51, a first optical - electric converter 52, a second optical - electric converter 53, a second router 54, a third router 55, a third optical - electric converter 56, a fourth optical - electric converter 57, a fifth optical - electric converter 58, and a fourth router 59 end to end; the master station controller 1 is connected to the first optical - electric converter 52; the slave station controller 2 is connected to the second optical - electric converter 53; the electrical cabinet 3 is connected to the third optical - electric converter 56; the boiler fan 4 is connected to the fifth optical - electric converter 58. Specifically, the ring network 5 is formed by connecting the above - mentioned devices in sequence through a communication bus.

[0033] In specific implementation, the positions of the third optical - electric converter, the fourth optical - electric converter, and the fifth optical - electric converter can be adjusted arbitrarily.

[0034] To enable the system to have better expansion ability, a reserved interface is provided on the fourth optical - electric converter 57, and the reserved interface is used to connect an expansion device 6.

[0035] In specific implementation, the first router 51, the first optical - electric converter 52, the second optical - electric converter 53, the second router 54, the third router 55, the third optical - electric converter 56, the fourth optical - electric converter 57, the fifth optical - electric converter 58, and the fourth router 59 in the ring network 5 are connected through a bus. Specifically, it can be communicatively connected through a PA bus or a DP bus.

[0036] In specific implementation, the master station controller 1 and the first optical - electric converter 52 are connected by an optical fiber; the slave station controller 2 and the second optical - electric converter 53 are connected by an optical fiber; the boiler fan 4 and the fifth optical - electric converter 58 are connected by an optical fiber, and the electrical cabinet 3 and the third optical - electric converter 56 are connected by an optical fiber.

[0037] It should be noted that in Figure 1 and Figure 3Among them, ACM FP02 is the master / slave station controller, OLM is the optical-electric converter, and F is the router. Specifically, ACNFP02M is the master station controller, OLM51M is the first optical-electric converter, F04 is the first router, F01 is the fourth router, OLM53-1 is the fifth optical-electric converter, OLM53 is the fourth optical-electric converter, OLM52 is the third optical-electric converter, MCC is the electric cabinet, F02 is the third router, F05 is the second router, OLM51R is the second optical-electric converter, and ACNFP02R is the slave station controller.

[0038] The basic principles of the present disclosure have been described above in connection with specific embodiments. However, it should be noted that the advantages, benefits, effects, etc. mentioned in the present disclosure are only examples and not limitations. It cannot be considered that these advantages, benefits, effects, etc. are essential for each embodiment of the present disclosure. In addition, the specific details disclosed above are only for the purpose of illustration and facilitating understanding, rather than limitations. These details do not limit the present disclosure to necessarily adopt the above specific details for implementation.

[0039] The block diagrams of the devices, apparatuses, equipment, and systems involved in the present disclosure are only illustrative examples and do not intend to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open-ended terms, meaning "including but not limited to", and can be used interchangeably with each other. The word "or" and "and" used herein refer to the word "and / or" and can be used interchangeably with each other, unless the context clearly indicates otherwise. The word "such as" used herein refers to the phrase "such as but not limited to" and can be used interchangeably with each other.

[0040] In addition, as used herein, the "or" used in the listing of items starting with "at least one" indicates a separate listing, so that for example, the listing of "at least one of A, B, or C" means A or B or C, or AB or AC or BC, or ABC (i.e., A and B and C). Furthermore, the term "exemplary" does not mean that the described examples are preferred or better than other examples.

[0041] It should also be noted that in the system of the present disclosure, each component can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent solutions of the present disclosure.

[0042] Various changes, substitutions, and alterations to the technology described herein can be made without departing from the teachings defined by the appended claims. Additionally, the scope of the claims of this disclosure is not limited to the specific aspects of the processes, machines, manufactures, compositions of events, means, methods, and acts described above. Processes, machines, manufactures, compositions of events, means, methods, or acts that are currently existing or later to be developed that perform substantially the same function or achieve substantially the same result as the corresponding aspects described herein can be utilized. Accordingly, the appended claims include such processes, machines, manufactures, compositions of events, means, methods, or acts within their scope.

[0043] The foregoing description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the disclosure. Thus, the disclosure is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0044] The foregoing description has been presented for purposes of illustration and description. Additionally, this description is not intended to limit the embodiments of the disclosure to the form disclosed herein. Although numerous example aspects and embodiments have been discussed above, those skilled in the art will recognize some of their variations, modifications, alterations, additions, and subcombinations.

Claims

1. A boiler fan communication network redundancy system, characterized in that: It includes a master station controller (1), a slave station controller (2), an electric cabinet (3), a boiler fan (4) and a ring network (5); The master station controller (1), the slave station controller (2), the electric cabinet (3) and the boiler fan (4) are all electrically connected to the ring network (5).

2. The boiler fan communication network redundancy system according to claim 1, characterized in that: The ring network (5) is formed by connecting a first router (51), a first photoelectric converter (52), a second photoelectric converter (53), a second router (54), a third router (55), a third photoelectric converter (56), a fourth photoelectric converter (57), a fifth photoelectric converter (58) and a fourth router (59) in sequence end to end; The master station controller (1) is connected to the first photoelectric converter (52); The slave station controller (2) is connected to the second photoelectric converter (53); The electric cabinet (3) is connected to the third photoelectric converter (56); The boiler fan (4) is connected to the fifth photoelectric converter (58).

3. The boiler fan communication network redundancy system according to claim 2, characterized in that: The fourth photoelectric converter (57) is provided with a reserved interface, and the reserved interface is used to connect the expansion device (6).

4. The boiler fan communication network redundancy system according to claim 2, characterized in that: The first router (51), the first photoelectric converter (52), the second photoelectric converter (53), the second router (54), the third router (55), the third photoelectric converter (56), the fourth photoelectric converter (57), the fifth photoelectric converter (58) and the fourth router (59) in the ring network (5) are connected via a bus.

5. The boiler fan communication network redundancy system according to claim 4, characterized in that: The bus is a PA bus.

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