CN113014292A

CN113014292A - Optical communication PLC based on classification module method and system thereof

Info

Publication number: CN113014292A
Application number: CN202110361718.3A
Authority: CN
Inventors: 陈永吉; 陈富裕
Original assignee: Tianjin Solong Electronics Co ltd
Current assignee: Tianjin Solong Electronics Co ltd
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2021-06-22
Anticipated expiration: 2041-04-02
Also published as: CN113014292B

Abstract

The invention provides an optical communication PLC based on a classification module method and a system thereof, relating to the technical field of intelligent control and comprising the following steps: the system comprises a cloud server, an upper computer, a first optical splitter, a programmable controller and a second optical splitter; the cloud server, the upper computer, the first optical splitter, the programmable controller and the second optical splitter are sequentially connected; the second optical splitter is connected with a sensor and/or an actuator and/or a PLC extension in a downlink mode; the number of sensors, actuators and PLC extensions is multiple. The method provided by the invention can realize high-speed communication, mass data transmission, quick, efficient and low-cost completion of the control scheme of the PLC and the system thereof, easily integrate the block chain technology and the edge computing technology, realize standardization, universalization, industrialization and intellectualization of the IOT industry, and greatly improve the productivity.

Description

Optical communication PLC based on classification module method and system thereof

Technical Field

The invention relates to the field of an internet of things (IOT), an internet of vehicles, a high-speed train and a ship control system formed by PLC, in particular to a PLC of optical communication and various topological structures of the system, and especially relates to an optical communication upper computer, an optical communication PLC, an optical communication sensor, an optical communication actuator, a communication device and a communication method.

Background

The system has the advantages that the system has no need of the PLC and the system thereof for the Internet of things, the Internet of vehicles, the high-speed rail train and the ship control system, high real-time performance requirements, abundant mass data and high-reliability active and passive control, and meanwhile, different topological structure schemes are adopted due to different system importance, so that strict hardware structure requirements are provided for the PLC and the system thereof, and universal standardization requirements are provided for reusability and portability of software; in the prior art, the upper computer, the PLC, the sensor, the actuator and the system bus are mostly connected by copper wires, generally, one signal needs 2-3 wiring terminals or connectors and can only be accessed to one controller, and in a large PLC system and an IOT system, more signals are needed, so that more wires are connected, the error is easy to occur, and more copper wires need to be arranged; the PLC hardware, the application software and the man-machine interface of each project need to be designed and compiled by a plurality of professionals, the requirements on the professional and skill of the practitioners are high, the installation and debugging efficiency is low, the PLC is easily interfered by a plurality of factors, the problems in signal isolation in the system are high, the comprehensive cost is high, the topological structure of the system is single, and the redundancy of important systems is insufficient;

the upper computer in the prior art is usually composed of a computer and configuration software, and needs to be programmed and debugged by multiple professional technical engineers after passing through a gateway, a router or a protocol converter with a cloud service end, a PLC end and a third-party access equipment end, so that the efficiency is low, and the reusability and the transportability of the program with the PLC are poor;

in the prior art, the PLC, the sensor, the actuator and the third-party equipment are mostly connected by copper wires, copper wiring terminals or copper connectors, each project needs to be programmed by a computer, the reusability of a program is poor, the transportability is poor, and the isolation of communication signals has more problems;

in the prior art, most of the PLC system topological structures are 2-8 core copper wires as buses, the buses are short in transmission distance, low in transmission rate, relatively less in transmission data information and single in system topological structure, when the system is large and the PLC station addresses are more, the error rate is high, the system is complex and tedious in debugging, the problems in communication signal isolation are more, and the comprehensive cost is high;

the control system of new energy automobiles, unmanned automobiles, high-speed rail trains and ships has high requirements on safety, real-time performance and reliability, has high requirements on intelligent degree, requires more data information of required sensors and actuators, adopts a PLC (programmable logic controller) taking copper wires as buses and a system thereof in a single-path topological structure form, cannot realize double topological structures and is used simultaneously, and has no mutual inspection function;

disclosure of Invention

In view of the above, the invention systematically optimizes the prior art PLC and its system topology and application scenario in the internet of things (IOT), the internet of vehicles, the high-speed train and the ship control system, combines the characteristics of optical fiber communication, adopts the technical route of the generalized classification module method for hardware, software and HMI human-machine interfaces such as upper computers, PLCs, sensors, actuators, communication gateways, etc. in the system, the system uses optical fibers as a communication physical carrier, meets the instant plugging and unplugging hardware physical structure and software signal processing solution applied to different topologies of optical fiber single mode and multimode, single fiber and dual fiber in the conventional and important systems, instantly and instantly accesses various wireless and bus type communication devices which are possibly accessed in the system, and adopts the standby solution of optical fiber-optical transceiving-optical fiber relay for the environment which is possibly unfavorable for optical fibers, the PLC terminal and the system bus are all in a topological structure of optical communication, and the defects that the communication speed is low, the content of transmitted information is less, the isolation problem of communication signals is more, the number of copper wires is more, the functions of software, hardware and the topological structure of the system are single, the universality is poor and the like in the prior art with wires as physical communication carriers are overcome; more importantly, the hardware, software and UI interface classification modularization method related by the invention is superior to the existing PLC and the system technical route thereof, is universal in the IOT field, has strong reusability and portability of programs, is easy to generate systems without developing the systems, especially has double-system parallelism, provides powerful guarantee for real-time monitoring of important systems, accords with international standards of IEC61131-3 and IEC61499, is extremely beneficial to the extremely simple integration of IT (information technology)/CT (communication technology)/OT (operation technology), is standardized in the IOT field, can greatly improve productivity, saves copper resources, meets the application of various topological structures, meets the characteristic of systematic standardization, and can meet various communication requirements of the systems when being brought into and taken into the systems.

The invention provides a PLC based on a classification module method and an optical communication system topological structure thereof, comprising the following steps:

the system comprises a cloud server, an upper computer, a first optical splitter, a programmable controller and a second optical splitter;

the upper computer comprises a first upper computer and a second upper computer;

the cloud servers comprise a first cloud server and a second cloud server;

the programmable controller comprises a first programmable controller and a second programmable controller;

the number of the sensors, the actuators and the PLC extensions is multiple;

the sensor, the actuator and the PLC extension uplink are respectively connected to a first programmable controller and a second programmable controller through two second optical splitters;

the programmable controller is respectively connected with a first optical splitter connected with the first upper computer and a first optical splitter connected with the second upper computer;

the first upper computer is connected with the first cloud server and/or the second cloud server;

and the second upper computer is connected with the second cloud server and/or the first cloud server.

Preferably, the upper computer comprises a first CPU module and a first communication module which are connected in communication;

the first communication module comprises one or more of an optical fiber sub-module, a wireless communication sub-module, a bus communication sub-module and an optical transceiver sub-module;

the number of the optical fiber sub-modules, the number of the wireless communication type sub-modules, the number of the blocks and the number of the bus communication sub-modules are multiple, and the number of the optical transceiver sub-modules is multiple.

Preferably, the optical fiber sub-module, the wireless communication sub-module, the bus communication sub-module and the optical transceiver sub-module are all connected to the first CPU module;

the wireless communication sub-modules comprise one or more of an infrared communication module, a microwave communication module, an ultrasonic communication module, a Bluetooth communication module, an RFID communication module, a Zigbee communication module, an LORA communication module, an NB-IOT communication module, a 3G communication module, a 4G communication module and a 5G communication module

The optical fiber sub-module, the wireless communication sub-module, the bus communication sub-module and the optical transceiver sub-module form the first communication module by splicing.

Preferably, the programmable controller comprises a second CPU module and a second communication module connected to each other;

the second communication module comprises one or more of an optical fiber sub-module, a wireless communication sub-module, a bus communication sub-module and an optical transceiver sub-module;

the number of the optical fiber sub-modules, the number of the wireless communication sub-modules and the number of the bus communication sub-modules are multiple, and the number of the optical transceiver sub-modules is at least two.

Preferably, the optical fiber sub-module, the wireless communication sub-module, the bus communication sub-module and the optical transceiver sub-module are all connected to the second CPU module;

The optical fiber sub-module, the wireless communication sub-module, the bus communication sub-module and the optical transceiver sub-module form the second communication module by splicing.

Preferably, the sensor comprises a sensing module, a third CPU module and a third communication module which are connected to each other;

the third communication module comprises at least one of an optical fiber sub-module, a wireless communication sub-module, a bus communication module and an optical transceiver sub-module;

the number of the optical fiber sub-module, the number of the wireless communication sub-module, the number of the sensing module, the number of the bus communication sub-module and the number of the optical transceiver sub-module are at least one.

Preferably, the optical fiber sub-module, the wireless communication sub-module, the bus communication sub-module and the optical transceiver sub-module are all connected to the third CPU module;

The optical fiber sub-module, the wireless communication sub-module, the bus communication sub-module and the optical transceiver sub-module form the third communication module by splicing.

The actuator comprises an execution module, a sensing module, a fourth CPU module and a fourth communication module;

the execution module, the sensing module and the fourth communication module are all connected with the fourth CPU module;

the fourth communication module comprises at least one of an optical fiber sub-module, a wireless communication sub-module, a bus communication module and an optical transceiver sub-module

The number of the optical fiber sub-module, the number of the wireless communication sub-module, the number of the execution module, the number of the bus communication sub-module and the number of the optical transceiver sub-module are at least one.

Preferably, the optical fiber sub-module, the wireless communication sub-module, the bus communication sub-module and the optical transceiver sub-module are all connected to the fourth CPU module;

The optical fiber sub-module, the wireless communication sub-module, the bus communication sub-module and the optical transceiver sub-module form the fourth communication module by splicing.

Preferably, the cloud server, the upper computer, the first optical splitter, the programmable controller, the second optical splitter, the sensor and the actuator form a topology.

The embodiment of the invention has the following beneficial effects: the invention provides a PLC based on a classification module method and an optical communication system topological structure thereof, comprising the following steps: the system comprises a cloud server, an upper computer, a first optical splitter, a programmable controller and a second optical splitter; the cloud server, the upper computer, the first optical splitter, the programmable controller and the second optical splitter are sequentially connected; the second optical splitter is connected with a sensor and/or an actuator and/or a PLC extension in a downlink mode; the number of sensors, actuators and PLC extensions is multiple. The method provided by the invention can realize high-speed communication, mass data transmission, quick, efficient and low-cost completion of the control scheme of the PLC and the system thereof, easily integrate the block chain technology and the edge computing technology, realize standardization, universalization, industrialization and intellectualization of the IOT industry, and greatly improve the productivity.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a topological structure diagram of another PLC and its optical communication system based on a classification module method according to an embodiment of the present invention;

fig. 2 is a diagram of another topology upper computer structure of a PLC and an optical communication system thereof based on a classification module method according to an embodiment of the present invention;

fig. 3 is a structural diagram of another PLC and its optical communication system topology programmable controller based on the classification module method according to an embodiment of the present invention;

fig. 4 is a structural diagram of another PLC and its optical communication system topology sensor based on the classification module method according to an embodiment of the present invention;

fig. 5 is a structural diagram of another PLC based on a classification module method and a topology executor of an optical communication system thereof according to an embodiment of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

At present, most of the PLC and the system thereof in the prior art are terminals and buses connected by copper wires, and when the station addresses of the PLC are more, the communication speed is low, the real-time performance is poor, the wiring is complicated, the requirements on the professional and skill of practitioners are high, the labor, the working hours and the material loss are large, and the productivity is low; based on this, the optical communication PLC based on the classification modularization, and the system method, device, and system thereof provided by the embodiments of the present invention can implement high-speed communication, mass data transmission, and fast, efficient, and low-cost completion of the control scheme of the PLC and the system thereof, easily integrate the blockchain technology and the edge computing technology, implement standardization, generalization, industrialization, and intellectualization of the IOT industry, and greatly improve productivity.

For facilitating understanding of the present embodiment, first, a PLC and an optical communication system topology thereof based on a classification module method disclosed in the embodiments of the present invention are described in detail.

The first embodiment is as follows:

the embodiment of the invention provides a PLC based on a classification module method and an optical communication system topological structure thereof, which comprises the following steps:

the cloud servers comprise a first cloud server and a second cloud server;

the number of the sensors, the actuators and the PLC extensions is multiple;

the number of the optical fiber sub-modules, the number of the wireless communication sub-modules and the number of the bus communication sub-modules are multiple, and the number of the optical transceiver sub-modules is multiple.

the wireless communication sub-module comprises one or more of an infrared communication module, a microwave communication module, an ultrasonic communication module, a Bluetooth communication module, an RFID communication module, a Zigbee communication module, an LORA communication module, an NB-IOT communication module, a 3G communication module, a 4G communication module and a 5G communication module;

the third communication module comprises at least one of an optical fiber sub-module, a wireless communication sub-module, a sensor module, a bus communication module and an optical transceiver sub-module;

the number of the optical fiber sub-modules, the number of the wireless communication sub-modules, the number of the sensor modules, the number of the bus communication sub-modules and the number of the optical transceiver sub-modules are at least one.

Preferably, the actuator comprises an execution module, a sensing module, a fourth CPU module and a fourth communication module;

Preferably, the cloud server, the upper computer, the first optical splitter, the programmable controller and the second optical splitter form a topology.

Further, the optical transceiver sub-module is used for matching IO, peripheral devices, interfaces, driving circuits and the like required by optical transceiving, and can be one or more, and can be laser and/or other visible lights;

the bus communication module is used for matching IO, peripheral devices, interfaces and the like required by bus communication, can be one or more, the CPU module is connected with the bus communication module through the connector in an uplink mode, and the CPU module can be connected with the bus communication module through the connector in a downlink mode and can also be connected through the optical fiber module;

the width of all modules is variable due to hardware configuration, and the length and the height are fixed; all module height structures are divided into an upper sub module and a lower sub module, the upper sub module is used for access equipment communication connection, the lower sub module is used for connection between modules to complete communication and power supply connection, the upper sub module and the lower sub module are connected through a connector to complete access equipment communication and power supply connection, and the upper sub module and the lower sub module are connected integrally through a clamping buckle;

all inter-module connectors are divided into a power supply part and a communication part, the power supply part connector continuously transmits a power supply adapting module output power supply set, and the communication part connector is divided into an SOC inter-chip bus communication part, an inter-module bus communication part and an IO communication part;

the CPU module is in communication connection with the optical fiber modules through the connectors, and the optical fiber modules can be defined as uplink or downlink through HMI and software setting; the CPU module communicates with the wireless communication module, the bus communication module and the optical transceiver module through the connector when going upwards and communicates through the optical fiber module when going downwards;

the first CPU module, the second CPU module and the third CPU module select different SOC chips or microprocessors or microcontrollers due to different data processing requirements of the optical communication upper computer, the PLC, the sensor and the actuator system, and the pin definitions and communication protocols of the SOC chips or microprocessors or microcontrollers and all the inter-module connectors are the same; the optical communication upper computer comprises a plurality of CPU modules, wherein the plurality of CPU modules are communicated through a SOC inter-chip bus communication part connector, and an IO communication part among the CPU modules is suspended;

the optical communication upper computer comprises a plurality of uplink and downlink communication interfaces which can be connected with a plurality of optical fiber modules, a plurality of or wireless communication modules, a plurality of or bus communication modules and a plurality of or optical transceiver modules; the plurality of uplink interfaces can be connected with the plurality of cloud service terminals, and the plurality of downlink interfaces can be connected with more PLC and/or wireless communication and/or bus communication devices and/or laser transceiving modules according to system requirements; thereby meeting the requirements of the topological structures of the common monitoring system and the important monitoring system.

The embodiment of the invention has the following beneficial effects:

1. IT/CT/OT extremely simple fusion;

2. copper resources are saved, and the defect of the isolation problem of the communication signals of the system copper wires is effectively overcome;

3. the labor consumption of 90 percent, the working time of 90 percent, the material consumption of 60 percent and the like in the whole life cycle are saved, a large amount of resources such as copper wires, wiring terminals and the like are saved, the weight of the product is reduced, and the volume is reduced;

4. the working mode of the existing practitioner is changed, and the professional and skill requirements of 90% of practitioners are reduced;

5. the safety coefficient of human bodies and equipment is greatly improved;

6. the parallel operation of important systems, intelligent data comparison and alarm are efficient and accurate;

7. the multi-topology structure of the common system and the important system is instantly changed, and the system is plug and play;

8. IOT system reconfiguration, including software reconfiguration and hardware reconfiguration, specifically embedding programs in a first CPU, a second CPU, a third CPU and a fourth CPU, and realizing information interaction of the system through modularization;

unless specifically stated otherwise, the relative steps, numerical expressions, and values of the components and steps set forth in these embodiments do not limit the scope of the present invention.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and the apparatus described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An optical communication PLC and system based on a classification module method are characterized by comprising:

the cloud servers comprise a first cloud server and a second cloud server;

the number of the sensors, the actuators and the PLC extensions is multiple;

2. The PLC and its system based on the Classification Module method according to claim 1,

the upper computer comprises a first CPU module and a first communication module which are in communication connection;

3. The PLC and its system based on the Classification Module method according to claim 2,

the optical fiber sub-module, the wireless communication sub-module, the bus communication sub-module and the optical transceiver sub-module are all connected with the first CPU module;

4. The PLC and its system based on the Classification Module method according to claim 1,

the programmable controller comprises a second CPU module and a second communication module which are connected;

5. The PLC and its system based on the Classification Module method according to claim 4,

the optical fiber sub-module, the wireless communication sub-module, the bus communication sub-module and the optical transceiver sub-module are all connected with the second CPU module;

6. The PLC and its system based on the Classification Module method according to claim 1,

the sensor comprises a sensing module, a third CPU module and a third communication module which are connected with each other;

7. The PLC and its system based on the Classification Module method according to claim 6,

the optical fiber sub-module, the wireless communication sub-module, the bus communication sub-module and the optical transceiver sub-module are all connected with the third CPU module;

8. The PLC and its system based on the Classification Module method according to claim 1,

the fourth communication module comprises at least one of an optical fiber sub-module, a wireless communication sub-module, a bus communication module and an optical transceiver sub-module;

9. The PLC and its system based on the Classification Module method according to claim 8,

the optical fiber sub-module, the wireless communication sub-module, the bus communication sub-module and the optical transceiver sub-module are all connected with the fourth CPU module;

the wireless communication sub-module comprises any one of an infrared communication module, a microwave communication module, an RFID communication module, a Zigbee communication module, a LORA communication module and a 4G communication module; the wireless communication sub-module comprises,

10. The PLC and its system according to any one of claims 1 to 9, wherein the cloud server, the upper computer, the first splitter, the programmable controller, the second splitter, the sensor, and the actuator form a topology.