CN217689855U - Node type measurement and control device and system based on optical fiber ring network - Google Patents
Node type measurement and control device and system based on optical fiber ring network Download PDFInfo
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- CN217689855U CN217689855U CN202221914317.2U CN202221914317U CN217689855U CN 217689855 U CN217689855 U CN 217689855U CN 202221914317 U CN202221914317 U CN 202221914317U CN 217689855 U CN217689855 U CN 217689855U
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Abstract
The utility model discloses a node formula measurement and control device and system based on optical fiber looped netowrk relates to highway tunnel and observes and controls the field, and the last measurement and control device of node formula measurement and control device includes: the optical fiber ring network communication unit is used for realizing optical fiber cascade communication of the measurement and control device; the network communication unit is used for realizing Ethernet communication or redundant backup of the measurement and control device; the RS485 communication unit is used for expanding a communication protocol; the optical fiber ring network communication unit, the network communication unit and the RS485 communication module are electrically connected with the processor of the measurement and control device respectively. The utility model provides a node formula measurement and control device and system connection are stable, make data transmission be difficult to receive the interference when greatly improving network stability, can also satisfy on-the-spot diversified demand.
Description
Technical Field
The utility model relates to a highway tunnel observes and controls the field, concretely relates to node formula measurement and control device and system based on optic fibre looped netowrk.
Background
For the measurement and control of the devices in the highway tunnel, the conventional measurement and control device generally implements parameter acquisition and data control through a Programmable Logic Controller (PLC). However, in the actual use process of the PLC, the PLC is centrally installed in the control cabinet in the conventional mode, and the access device is often far away from the control cabinet, a large number of cables are needed in the middle for long-distance transmission, which easily causes transmission interference, and when there is a fault, the equipment and the control cabinet need to be checked back and forth, which is time-consuming and labor-consuming; in addition, the PLC master station and the slave station communicate by accessing an Ethernet ring network system, and the network always has the problems of unreliability or instability, once the PLC slave station loses control and is completely paralyzed due to network failure, the system reliability cannot be ensured, particularly, the system paralysis caused by network failure is unacceptable in an application scene with high reliability requirement, such as a high-speed tunnel, so that the manpower maintenance cost is increased, and the whole tunnel passing disorder can be brought when an accident occurs, and the driving safety is influenced; at present, no measurement and control equipment capable of replacing a PLC exists in the market.
In view of this, the present application is specifically made.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that traditional measurement and control device uses PLC to produce transmission interference easily in carrying out highway tunnel measurement and control, and the network is unstable and can't satisfy on-the-spot diversified demand, and aim at provides a node formula measurement and control device and system based on the optic fibre looped netowrk, solves above-mentioned problem.
The utility model discloses a following technical scheme realizes:
in a first aspect, the embodiment of the utility model provides a node formula measurement and control device based on optical fiber looped netowrk, including measurement and control device:
the optical fiber ring network communication unit is used for realizing optical fiber cascade communication of the measurement and control device;
the network communication unit is used for realizing Ethernet communication or redundant backup of the measurement and control device;
the RS485 communication unit is used for expanding a communication protocol;
the optical fiber ring network communication unit, the network communication unit and the RS485 communication module are electrically connected with the processor of the measurement and control device respectively.
In an optional embodiment of the present application, the optical fiber ring network communication unit includes an optical module for supporting optical fiber ring network communication, and the optical module is electrically connected to the processor.
In an optional embodiment of the present application, a housing of the measurement and control device is provided with an SFP interface in cooperation with the optical module unit.
In an optional embodiment of the present application, the network communication unit includes an ethernet communication module, the ethernet communication module is used for implementing service access and data acquisition and transmission of the ethernet ring network, and the processor is electrically connected to the ethernet communication module.
In an optional embodiment of the present application, a housing of the measurement and control device is provided with a hundred mega network interface in cooperation with the ethernet communication module.
In an optional embodiment of the application, the RS485 communication unit includes an RS485 interface module, the RS485 interface module realizes data interaction of the measurement and control device through a communication protocol, and the processor is electrically connected with the RS485 interface module.
In an optional embodiment of the application, the housing of the measurement and control device is provided with an RS485 communication interface in cooperation with the RS485 interface module.
In an optional embodiment of the application, the device further comprises a switching value module, and the shell of the measurement and control device is matched with the switching value module which is provided with an interface.
In an optional embodiment of the present application, the measurement and control device further includes a bluetooth module, the bluetooth module is used for implementing configuration and control of the measurement and control device, and the bluetooth module is electrically connected to the processor.
In a second aspect, the present embodiment provides a node type measurement and control system based on an optical fiber ring network, including a control center and a plurality of node type measurement and control devices based on an optical fiber ring network as before, where the plurality of node type measurement and control devices are cascaded together through SFP interfaces to form a chain structure, and the chain structure is cascaded with the control center to form a closed host-node type optical fiber ring network system.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
the utility model provides a node formula measurement and control device, through optical fiber looped netowrk communication unit, network communication unit and RS485 communication module's setting, replaced prior art use PLC to carry out data acquisition's traditional mode, greatly improved network stability, measurement and control device is last to cooperate each unit to be provided with corresponding interface, can effectively satisfy the diversified demand in operation scene, on this basis, the utility model provides a node formula measurement and control system based on optical fiber looped netowrk, a plurality of node formula measurement and control device cascade through SFP optical fiber interface and form chain structure together, thereby break away from the mode that traditional PLC concentrated installation, conveniently install and the construction wiring nearby, subtract the short device greatly and connect the line to measurement and control device, reduce the interference, node formula measurement and control device adopts the cyclization structure with control center simultaneously, data can communicate with control center from two directions homoenergetic of looped netowrk, consequently middle arbitrary point optical fiber disconnection does not influence, the reliability obtains greatly improving.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is an overall architecture diagram of a node type measurement and control device based on an optical fiber ring network according to this embodiment;
fig. 2 is a shell panel diagram of the node type measurement and control device based on the optical fiber ring network provided in this embodiment:
fig. 3 is a system architecture diagram of the node type measurement and control system based on the optical fiber ring network according to this embodiment.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The traditional expressway tunnel equipment traditionally adopts a PLC (programmable logic controller) to realize acquisition and control. The communication of the PLC adopts a master-slave station mode, the master station is responsible for logically controlling and issuing the slave stations, and the slave stations are responsible for collecting data and reporting to the master station and reversely executing output. Although the PLC is widely used, there are also many disadvantages, for example, the PLC is generally installed in a control cabinet in a centralized manner, and often the access device is far away from the control cabinet, a large amount of cables are required in the middle for long-distance transmission, the network is unstable, and the transmission is susceptible to interference.
Example 1
The embodiment of the utility model provides a node formula measurement and control device based on optical fiber looped netowrk, as shown in fig. 1 and fig. 2, including measurement and control device:
the optical fiber ring network communication unit is used for realizing optical fiber cascade communication between the measurement and control devices;
the network communication unit is used for realizing Ethernet communication or redundant backup of the measurement and control device;
the RS485 communication module is used for expanding a communication protocol;
the optical fiber ring network communication unit, the network communication unit and the RS485 communication module are electrically connected with a processor of the measurement and control device respectively.
It should be appreciated by those skilled in the art that, in the present invention, the master station in the cascade communication may send an instruction to a single node, or may send an instruction to all nodes, and the designed communication method and the communication method between nodes are common knowledge familiar to those skilled in the art, and are not described herein again, and the technical means related to ethernet communication and implementing redundancy backup in the present technical solution are also common technical means in the art, and are not described again.
In an optional embodiment of the present application, the optical fiber ring network communication unit includes an optical module for supporting optical fiber ring network communication, and the optical module is electrically connected to the processor.
The optical fiber ring network communication unit can directly replace a PLC slave station, collects collected information to a control center similar to a PCL master station through an optical fiber cascade mode for processing, specifically, in this embodiment, an integrated optical module adopted in this embodiment is a single-mode single fiber, and has a center wavelength of 1310/1550nm, and a transmission distance of 20KM, and aims to replace the long-distance transmission using a large number of cables in the prior art, it is to be noted that the optical module selected in this embodiment is only a preferred optical module in an expressway tunnel scene, and specific models of the optical module are not limited, further, the encapsulation types of the optical module, including QSFP-DD, QSFP28, QSFP +, SFP28, SFP/eSFP, CXP, CFP, and the like, are not further limited, wherein technical means used in the encapsulation process are methods known by those skilled in the art, and are not described herein again.
In an optional embodiment of the present application, a housing of the measurement and control device is provided with SFP interfaces in cooperation with the optical module, where as a preferred embodiment of the present embodiment, the number of SFP optical module interfaces is two, and the measurement and control device is used to support optical fiber communication, and the purpose of the measurement and control device is to form a chain structure by cascading the SFP optical fiber interfaces, so as to finally implement construction of an optical fiber ring network, specifically, in the present embodiment, as shown in fig. 2, taking node 2 as an example, node 2 includes two SFP optical fiber interfaces, where one SFP optical fiber interface is connected to node 1 while the other SFP optical fiber interface is connected to node 3, so as to implement series connection between node 1, node 2, and node 3, and the rest of the nodes are repeated, and thus the chain structure is finally formed.
In an optional embodiment of the present application, the network communication unit includes an ethernet communication module, the ethernet communication module is configured to implement service access and data acquisition and transmission of an ethernet ring network, and the processor is electrically connected to the ethernet communication module.
In this embodiment, the types of the ethernet communication modules may be 10M Base-T, 100M Base-T, 1000MBase-T, 10G Base-T, and the like, which are all common types in the market, and are not specifically limited, and in particular, in order to simultaneously implement service access and data acquisition and transmission of an ethernet ring network, in particular, a transmission cable may be optionally added, or a center tap on the secondary side of a transformer in a network transformer may be selected to be connected with no power supply or grounded, but receive a single-ended signal, and convert the single-ended signal into a common-mode signal by using a center tap capacitor and a common-mode resistor connected in series with the center tap and grounded, so that the single-ended signal is connected with a twisted pair through a network port and transmitted to the outside; meanwhile, the network transformer can still normally transmit differential signals. Therefore, the purpose of simultaneously implementing service access and data acquisition and transmission of the ethernet ring network by the ethernet communication module is achieved, it should be noted that, in this embodiment, only two implementation methods are exemplarily mentioned for reference, and the specific method is not further limited.
In an optional embodiment of the present application, a housing of the measurement and control device is provided with a hundred mega network interface in cooperation with the ethernet communication module. In this embodiment, as shown in fig. 2, the number of the hundred mega network interfaces is one, and the hundred mega network interfaces serve as auxiliary interfaces in this application, which are intended to serve as a backup for optical fiber ring network communication, so as to implement the connection of the measurement and control device supporting two modes, namely, ethernet ring network and optical fiber ring network, and further improve the stability of network connection and data transmission
In an optional embodiment of the application, the RS485 communication unit comprises an RS485 interface module, the RS485 interface module is realized through a communication protocol, the data interaction of the measurement and control device is realized, and the processor is electrically connected with the RS485 interface module. It should be understood by those skilled in the art that the RS485 bus may adopt a polling method to collect data of devices on the bus one by one, or may also adopt a multi-channel and multi-thread parallel collection method, which is not limited in this embodiment.
In an optional embodiment of the application, the casing of the measurement and control device is matched with the RS485 interface module is provided with an RS485 communication interface. As a preferred embodiment, as shown in fig. 2, the number of RS485 communication interfaces is two, and in the prior art, when the highway and the highway tunnel measurement and control equipment performs data acquisition by an upper computer system through an RS485 interface method, the upper computer system usually has only 1 RS485 interface, so that multiple measurement and control equipment can only be connected to the RS485 interface of the upper computer system in a parallel manner. The RS485 interface of the upper computer system collects data in a mode of polling RS485 equipment addresses, data collection of the next RS485 equipment address is carried out after the data collection is completed, synchronous collection of a plurality of RS485 equipment cannot be achieved, and for solving the problem, two RS485 interface modules are configured on the measurement and control device of the embodiment.
In an optional embodiment of the application, the device further comprises a switching value module, and the shell of the measurement and control device is matched with the switching value module which is provided with an interface. Specifically, in this embodiment, the measurement and control device can support 10 switching value inputs and 10 switching value outputs, and is intended to satisfy most single-point applications, where the number of the interfaces is two and corresponds to the 10 switching value inputs and the 10 switching value outputs, respectively, and it should be noted that the protocol types adopted by the switching value module and the interface types used by the switching value module are both market common types, and are not further limited herein.
In an optional embodiment of the present application, the measurement and control device further includes a bluetooth module, the bluetooth module is used for implementing configuration and control of the measurement and control device, and the bluetooth module is electrically connected to the processor.
Example 2
In a second aspect, the present embodiment provides a node type measurement and control system based on an optical fiber ring network, as shown in fig. 3, the node type measurement and control system includes a control center and a plurality of node type measurement and control devices based on an optical fiber ring network, the node type measurement and control devices are cascaded together through SFP interfaces to form a chain structure, and the chain structure is cascaded with the control center to form a closed optical fiber ring network system.
In the existing mode, PLC's communication adopts master and slave station mode, and the master station is responsible for logical control and issues the slave station, and the slave station is responsible for gathering data and reporting master station and reverse execution output, but PLC installs in the switch board concentratedly, and often the access arrangement is far away from the switch board, and the centre needs a large amount of cables to come long distance transmission, however the utility model provides a node formula system of observing and controlling, replace the PLC slave station with chain structure, collect information and collect the control center of similar PCL master station through the optical fiber cascade mode and handle, and is further, the measurement and control device of this system adopts chain structure to distribute, can be close to equipment fixing or a plurality of equipment selection in the tunnel and install apart from suitable point, can subtract short equipment to the measurement and control device line greatly like this, reduce interference. When a fault occurs, the fault is conveniently searched due to short distance or the connection line is conveniently replaced, and on the basis, the node type measurement and control device adopts the optical fiber cascade mode for communication to form a closed and independent operation network, so that the reliability is high, and the interference is not easy to occur. Meanwhile, a ring forming structure is adopted, data can be communicated with a control center from two directions of a ring network, so that the disconnection of optical fibers at any point in the middle is not influenced, and the reliability is greatly improved.
The above-mentioned embodiments further describe the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a node formula measurement and control device based on optical fiber looped netowrk, measurement and control device is provided with the casing, its characterized in that includes:
the optical fiber ring network communication unit is used for realizing optical fiber cascade communication of the measurement and control device;
the network communication unit is used for realizing Ethernet communication or redundant backup of the node type measurement and control device;
the RS485 communication module is used for expanding a communication protocol;
the optical fiber ring network communication unit, the network communication unit and the RS485 communication module are electrically connected with the processor respectively.
2. The node type measurement and control device based on the optical fiber ring network as claimed in claim 1, wherein the optical fiber ring network communication unit comprises an optical module for supporting optical fiber ring network communication, and the optical module is electrically connected to the processor.
3. The node type measurement and control device based on the optical fiber ring network as claimed in claim 2, wherein a housing of the measurement and control device is provided with an SFP interface in cooperation with the optical module.
4. The node type measurement and control device based on the optical fiber ring network as claimed in claim 1, wherein the network communication unit comprises an ethernet communication module, the ethernet communication module is used for realizing service access and data acquisition and transmission of the ethernet ring network, and the processor is electrically connected with the ethernet communication module.
5. The node type measurement and control device based on the optical fiber ring network according to claim 4, wherein a housing of the measurement and control device is provided with a hundred mega network interface in cooperation with the Ethernet communication module.
6. The node type measurement and control device based on the optical fiber ring network as claimed in claim 1, wherein the RS485 communication unit includes an RS485 interface module, the RS485 interface module realizes data interaction of the measurement and control device through a communication protocol, and the processor is electrically connected to the RS485 interface module.
7. The node type measurement and control device based on the optical fiber ring network as claimed in claim 6, wherein a housing of the measurement and control device is provided with an RS485 communication interface in cooperation with the RS485 interface module.
8. The node type measurement and control device based on the optical fiber ring network as claimed in claim 1, further comprising a switching value module, wherein a housing of the measurement and control device is provided with an interface in cooperation with the switching value module.
9. The node type measurement and control device based on the optical fiber ring network as claimed in claim 1, further comprising a bluetooth module, wherein the bluetooth module is used for realizing configuration and control of the measurement and control device, and the bluetooth module is electrically connected with the processor.
10. An optical fiber ring network-based node type measurement and control system comprises a control center and a plurality of node type measurement and control devices according to any one of claims 1 to 9, wherein the plurality of measurement and control devices are cascaded together through SFP interfaces to form a chain structure, and the chain structure is cascaded with the control center to form a closed host-node type optical fiber ring network system.
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| CN202221914317.2U CN217689855U (en) | 2022-07-22 | 2022-07-22 | Node type measurement and control device and system based on optical fiber ring network |
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| CN202221914317.2U CN217689855U (en) | 2022-07-22 | 2022-07-22 | Node type measurement and control device and system based on optical fiber ring network |
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