CN110072208B - Photovoltaic power generation-based wireless intelligent network communication device - Google Patents
Photovoltaic power generation-based wireless intelligent network communication device Download PDFInfo
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- CN110072208B CN110072208B CN201910406348.3A CN201910406348A CN110072208B CN 110072208 B CN110072208 B CN 110072208B CN 201910406348 A CN201910406348 A CN 201910406348A CN 110072208 B CN110072208 B CN 110072208B
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- 230000006854 communication Effects 0.000 title claims abstract description 47
- 238000004891 communication Methods 0.000 title claims abstract description 45
- 238000010248 power generation Methods 0.000 title claims abstract description 27
- 238000012544 monitoring process Methods 0.000 claims description 22
- 230000005540 biological transmission Effects 0.000 claims description 15
- 230000005059 dormancy Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 9
- 230000003111 delayed effect Effects 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 108700026140 MAC combination Proteins 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
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- 238000009434 installation Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
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- 230000007547 defect Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a wireless intelligent network communication device based on photovoltaic power generation, which is divided into three parts, wherein the bottom layer comprises wireless acquisition nodes for acquiring technical parameters on photovoltaic area equipment, each power generation unit in the middle is provided with a wireless relay node, the wireless relay nodes are in wireless communication with the wireless acquisition nodes and are used for receiving data of the wireless acquisition nodes under the unit, the wireless gateway nodes on the upper layer are in wireless communication with the wireless relay nodes, the data collected by the relay nodes of each unit are received, the data are integrally processed and packaged and then are sent to a server, the server is connected with a database for communication, and the database is connected with a display screen; the wireless network system replaces the traditional wired communication mode by using the WSN technology, and is safer and lower in cost than wireless networks of leased operators.
Description
Technical Field
The invention relates to the technical field of the Internet of things, and the WSN technology replaces the traditional wired communication mode; in particular to a wireless intelligent network communication device based on photovoltaic power generation.
Background
The invention provides a wireless intelligent network communication device based on photovoltaic power generation, which introduces a WSN into a monitoring system and mainly solves the problems of difficult wiring, scattered equipment points, poor flexibility and the like in actual engineering. Although wireless data transmission photovoltaic power generation equipment exists in the market at present, the network of each large operator in China is cited, and the safety problem exists. The wireless sensor network technology is adopted, no extra wiring is needed, the installation is simple and convenient, the safety and the reliability are realized, and the maintainability and the expandability are good. The wireless acquisition node is bound to the photovoltaic area equipment, so that the photovoltaic area equipment has the wireless communication capability. The device can be connected with an upper computer monitoring system, can realize the automatic acquisition of the data of the photovoltaic area equipment and the state switching of the production flow under the condition of not changing the existing working flow and mode, and can also realize the inquiry and the control of the equipment condition by using the monitoring system.
Disclosure of Invention
The invention aims to overcome the defects in the prior wired communication technology, and provides a wireless intelligent network communication device based on photovoltaic power generation, which replaces the traditional wired communication mode by using a WSN technology, and is safer and lower in cost than wireless networks of leased operators.
The invention is realized in such a way that a wireless intelligent network communication device based on photovoltaic power generation is constructed, which is characterized in that; the device is divided into three parts, wherein the bottom layer comprises wireless acquisition nodes for acquiring technical parameters on photovoltaic area equipment, each power generation unit in the middle layer is provided with a wireless relay node, the wireless relay node and the wireless acquisition nodes realize wireless communication and are used for receiving data of the wireless acquisition nodes under the units, the wireless gateway node in the upper layer and the wireless relay nodes realize wireless communication, the data collected by each unit relay node are received, the data collected by each unit relay node are integrally processed and packaged and then sent to a server; the monitoring system can access the database, can also send an instruction to the gateway node, send a command to the bottom layer node and control the running state of the node.
The wireless intelligent network communication device based on photovoltaic power generation is characterized in that; the wireless acquisition node comprises a data interface conversion module, a low-power-consumption main control chip module, a power supply module and a remote wireless radio frequency module;
the wireless relay node comprises a main control chip module with low power consumption, a power supply module and a remote wireless radio frequency module;
The wireless gateway node comprises a main control chip module with low power consumption, a power supply module, a communication interface module and a remote wireless radio frequency module.
The wireless intelligent network communication device based on photovoltaic power generation is characterized in that; the device supports the collection of interfaces of various equipment types, including an RS232/RS485 interface and an Ethernet interface; the corresponding wireless transmission module can convert each interface data into a package data packet according to the unified requirement and transmit the package data packet to the device of the upper layer.
The wireless intelligent network communication device based on photovoltaic power generation is characterized in that; the bottom layer wireless acquisition node, the wireless relay node and the wireless gateway node are designed in an optimized manner through the polling-based MAC protocol on the communication protocol among the nodes, so that the wireless communication node is more efficient and energy-saving.
The wireless intelligent network communication device based on photovoltaic power generation is characterized in that; the wireless relay node not only can collect the equipment data of the bottom wireless acquisition node, but also can resend or forward the data signal to enlarge the network transmission distance.
The wireless intelligent network communication device based on photovoltaic power generation is characterized in that; the wireless gateway node and the server realize reliable connection of the upper computer and the lower computer, and meanwhile, the wireless gateway node can be additionally provided with a 4G/5G module to realize remote data monitoring under the condition of not considering the safety of operators.
The wireless intelligent network communication device based on photovoltaic power generation is characterized in that; the operation is as follows;
After initialization is completed, the wireless acquisition node firstly acquires data from the photovoltaic equipment, and starts a receiving mode to wait for an instruction of the wireless relay node after the data acquisition is completed, and once the wireless relay node sends a polling instruction and the node does not receive the polling instruction within a preset time, the wireless relay node automatically sleeps to wait for next polling; if a polling command of the gateway is received, all acquisition nodes need to judge whether the command polls the data of the acquisition nodes or not, if so, the data is uploaded, if not, the nodes are dormant according to a dormancy instruction of the data packet, the dormancy time is related to the polling sequence number of the acquisition nodes, and until the data is uploaded, the nodes enter a dormancy state to wait for the next work wakeup;
The wireless relay node firstly monitors a command of the gateway node once initialization is completed, if a command of a previous stage is received, a polling command is started to be sent to the acquisition node, a request is sent corresponding to an address of each wireless acquisition node, data of the point is received, a monitoring channel is opened after the transmission is completed, and if the data is not received within a preset time, the next node is polled; and if the data is received, delaying a short period of time to poll the next node after finishing the task, and delaying a period of time after packaging the data and sending the data to the wireless gateway node for processing, and waiting for the next instruction given to the wireless gateway node by the gateway node.
The gateway node firstly monitors a command of an upper computer once initialization is completed, if the command of the upper computer is received, a polling command is started to be sent to a lower wireless relay node, a request is sent corresponding to the address of each wireless relay node, the data of the point is received, a monitoring channel is opened after the data is sent, and if the data is not received within a preset time, the next node is polled; if the data is received, a small period of time is delayed to poll the next node after the completion of the data, until the completion of the task in the group, the data is packed and sent to a server for processing through an RS232/RS 485/Ethernet interface, a period of time is delayed, and an upper computer waits for a next instruction.
The invention has the following advantages: the invention provides a wireless intelligent network communication device based on photovoltaic power generation, which monitors equipment switches and data parameters in the photovoltaic power generation process through a WSN technology. The device supports various types of interfaces including an RS232/RS485 interface and an Ethernet interface. The hardware part of the device comprises a main control chip with low power consumption and a remote wireless radio frequency module. Meanwhile, the software of the device is designed to comprise a driving program of the node, and the communication protocol among the nodes is optimally designed based on the polled MAC protocol, so that the wireless communication node is more efficient, safer and more energy-saving. The device can realize the access of the server database and the state switching of the power generation process, and the user can also realize the monitoring of the photovoltaic field equipment by using the monitoring system. The wireless sensor network is positioned at the bottommost layer of the whole monitoring system, each wireless acquisition node acquires data signals of each device, stores information data in a frame format defined in advance, sends the information data to wireless relay nodes with set addresses of each unit in a wireless communication and dynamic networking mode, and the gateway node inquires the relay nodes of each unit to acquire information, performs basic processing and then sends the information to the server for processing.
The device disclosed by the invention applies an advanced internet of things technology, each wireless acquisition node can convert each data type in the photovoltaic equipment through a protocol, and upload the data to a server through wireless transmission, and the wireless intelligent network communication device is a product of ultra-small, strong-performance, wireless transmission and high-precision data acquisition and transmission. Not only is compensation wires and cables saved, but also distortion and interference of signals are reduced, so that accurate measurement results are obtained. The change condition of the equipment parameters in the photovoltaic power generation process can be monitored in a full period.
Drawings
FIG. 1 is a schematic block diagram of a wireless acquisition node;
fig. 2 is a schematic block diagram of a wireless relay node;
Fig. 3 is a schematic block diagram of a wireless gateway node;
FIG. 4 is a flow chart of a wireless acquisition node procedure;
Fig. 5 is a flow chart of a wireless relay node procedure;
Fig. 6 is a flow chart of a wireless gateway node procedure;
fig. 7 is a schematic diagram of a wireless intelligent network communication device according to the present invention.
Detailed Description
The following detailed description of the present invention will provide clear and complete description of the technical solutions of the embodiments of the present invention, with reference to fig. 1-7, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a photovoltaic power generation-based wireless intelligent network communication device which is divided into three parts by improving, wherein the bottom layer comprises a wireless acquisition node 1 for acquiring technical parameters on photovoltaic area equipment, each power generation unit in the middle is provided with a wireless relay node 2, the wireless relay node 2 is in wireless communication with the wireless acquisition node 1 and is used for receiving data of the wireless acquisition node under the unit, a wireless gateway node 3 on the upper layer is in wireless communication with the wireless relay node 2, the data collected by each unit relay node is received, the data are integrally processed and packaged and then sent to a server 4, the server 4 is connected and communicated with a database 5, and the database 5 is connected with a display screen 6; the device can realize the access of a server database and the state switching of the power generation process, and a user can also realize the monitoring of the photovoltaic field area equipment by using a monitoring system; installing required wireless acquisition nodes 1 on each photovoltaic device on site, acquiring device information through the wireless acquisition nodes, transmitting the device information to a relay node of each unit through a wireless module, packaging the data after the wireless relay node receives the data acquired by each acquisition node, continuously uploading the data to a wireless gateway node, and storing the data in a database after the gateway node packages the data; the monitoring system can access the database, can also send an instruction to the gateway node, send a command to the bottom layer node and control the running state of the node.
As shown in fig. 1, the wireless acquisition node is the lowest link in the communication process and is also the most important link. The system is responsible for collecting and processing collected data and completing read-write operation of the radio frequency chip; the wireless radio frequency module is in charge of wireless sending or receiving work; the energy supply module adopts a rechargeable lithium battery to supply power and original equipment to self-power. The designed collection node is provided with various collection interfaces, and can be used for the most common output communication interface of the photovoltaic equipment. The whole data acquisition is processed through a chip with low power consumption, and the processed data is sent to the wireless relay node in a certain format through the wireless module.
As shown in fig. 2, the wireless relay node is an intermediate link in the communication process, and its functions have two functions: (1) Collecting data of the wireless acquisition node under the unit and forwarding the data to the node at the upper level; (2) The distance of network transmission is extended by retransmission or forwarding of data signals. The energy supply module is powered by a rechargeable lithium battery, and can be powered by the box transformer unit.
As shown in fig. 3, the wireless gateway node is the topmost link in the whole transmission process. It is the controller of the whole wireless network and is responsible for managing the nodes in the network, including establishing new nodes, receiving instructions sent by the upper computer, receiving data sent by the relay node, etc.
The wireless gateway node consists of a CPU, a wireless radio frequency module, an R232/RS 485/Ethernet interface, 4G/5G (optional installation without considering the safety of operators) and a power module. The wireless gateway node uploads the data to the server for storage in an Ethernet mode, and can also receive commands from an upper computer. In operation, the gateway node is always in a receive/transmit state and is powered by an external power source.
As shown in fig. 4, after initialization is completed, the wireless acquisition node firstly performs data acquisition on the photovoltaic device, and after the acquisition is completed, the wireless acquisition node starts a receiving mode to wait for an instruction of the wireless relay node, and once the wireless relay node sends a polling instruction and the node does not receive the polling instruction within a preset time, the wireless acquisition node automatically sleeps to wait for next polling. If a polling command of the relay node is received, all the acquisition nodes need to judge whether the command polls the data of the acquisition nodes or not, if so, the data is uploaded, and if not, the nodes are dormant according to a dormancy instruction of the data packet, the dormancy time is related to the polling sequence number of the acquisition nodes, and until the data uploading is completed, the nodes enter a dormancy state to wait for the next work wakeup.
As shown in fig. 5, once the initialization is completed, the wireless relay node first monitors the command of the gateway node, if the command of the previous stage is received, it starts to send a polling command to the acquisition node, sends a request corresponding to the address of each wireless acquisition node and receives the data of the point, if the sending is completed, it opens the monitoring channel, if the data is not received within a predetermined time, it polls the next node. And if the data is received, delaying a short period of time to poll the next node after finishing the task, and delaying a period of time after packaging the data and sending the data to the wireless gateway node for processing, and waiting for the next instruction given to the wireless gateway node by the gateway node.
As shown in fig. 6, once the initialization is completed, the gateway node first monitors the command of the upper computer, if the command of the upper computer is received, starts to send a polling command to the lower wireless relay node, sends a request corresponding to the address of each wireless relay node and receives the data of the point, and opens the monitoring channel after the sending is completed, if the data is not received within a predetermined time, polls the next node. If the data is received, a small period of time is delayed to poll the next node after the completion of the data, until the completion of the task in the group, the data is packed and sent to a server for processing through an RS232/RS 485/Ethernet interface, a period of time is delayed, and an upper computer waits for a next instruction.
As shown in fig. 7, the general design of the device is that first, the required wireless acquisition nodes are installed on each photovoltaic device on site, the device information is acquired through the wireless acquisition nodes and sent to the relay node of each unit through the wireless module, the wireless relay node packages the data after receiving the data acquired by each acquisition node, the data is continuously uploaded to the wireless gateway node, and the gateway node packages the data and stores the data in the database. The monitoring system can access the database, can also send an instruction to the gateway node, send a command to the bottom layer node and control the running state of the node.
Compared with the wired communication technology, the invention has the following advantages: the device disclosed by the invention applies an advanced internet of things technology, each wireless acquisition node can convert each data type in the photovoltaic equipment through a protocol, and upload the data to a server through wireless transmission, and the wireless intelligent network communication device is a product of ultra-small, strong-performance, wireless transmission and high-precision data acquisition and transmission. Not only is compensation wires and cables saved, but also distortion and interference of signals are reduced, so that accurate measurement results are obtained. The change condition of the equipment parameters in the photovoltaic power generation process can be monitored in a full period.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (1)
1. A photovoltaic power generation based wireless intelligent network communication device, characterized in that; the device is divided into three parts, wherein the bottom layer comprises a wireless acquisition node (1) for acquiring technical parameters on photovoltaic area equipment, each power generation unit in the middle is provided with a wireless relay node (2), the wireless relay node (2) is in wireless communication with the wireless acquisition node (1) and is used for receiving data of the wireless acquisition node under the unit, the wireless gateway node (3) of the upper layer is in wireless communication with the wireless relay node (2), the data collected by each unit relay node is received, the data are integrally processed and packaged and then sent to a server (4), the server (4) is in connection communication with a database (5), and the database (5) is connected with a display screen (6); the device can realize the access of a server database and the state switching of the power generation process, and a user can also realize the monitoring of the photovoltaic field area equipment by using a monitoring system; installing required wireless acquisition nodes (1) on each photovoltaic device on site, acquiring device information through the wireless acquisition nodes, transmitting the device information to a relay node of each unit through a wireless module, packaging data after the wireless relay node receives the data acquired by each acquisition node, continuously uploading the data to a wireless gateway node, packaging the data by the gateway node, and storing the data in a database; the monitoring system can access the database, can also send an instruction to the gateway node, send a command to the bottom layer node and control the running state of the node;
the wireless acquisition node (1) comprises a data interface conversion module, a low-power-consumption main control chip module, a power supply module and a remote wireless radio frequency module;
the wireless relay node (2) comprises a main control chip module with low power consumption, a power supply module and a remote wireless radio frequency module;
the wireless gateway node (3) comprises a main control chip module with low power consumption, a power supply module, a communication interface module and a remote wireless radio frequency module;
The device supports the collection of interfaces of various equipment types, including an RS232/RS485 interface and an Ethernet interface; the corresponding wireless transmission module can convert each interface data into a package data packet according to the unified requirement and transmit the package data packet to the upper layer of equipment;
The bottom layer wireless acquisition node, the wireless relay node and the wireless gateway node are designed in an optimized manner through a polling-based MAC protocol on the communication protocol among the nodes, so that the wireless communication node is more efficient and energy-saving;
The wireless relay node (2) not only can collect the equipment data of the bottom wireless acquisition node, but also can resend or forward the data signal to enlarge the network transmission distance;
the wireless gateway node (3) and the server (4) are reliably connected with the upper computer and the lower computer, and meanwhile, the wireless gateway node can be additionally provided with a 4G/5G module to realize remote data monitoring under the condition of not considering the safety of operators;
The device operates as follows;
After initialization is completed, the wireless acquisition node (1) firstly acquires data from the photovoltaic equipment, starts a receiving mode to wait for an instruction of the wireless relay node after the acquisition is completed, and automatically dormancy to wait for next polling once the wireless relay node sends a polling instruction and the node does not receive the polling instruction within a preset time; if a polling command of the gateway is received, all acquisition nodes need to judge whether the command polls the data of the acquisition nodes or not, if so, the data is uploaded, if not, the nodes are dormant according to a dormancy instruction of the data packet, the dormancy time is related to the polling sequence number of the acquisition nodes, and until the data is uploaded, the nodes enter a dormancy state to wait for the next work wakeup;
The wireless relay node firstly monitors a command of the gateway node once initialization is completed, if a command of a previous stage is received, a polling command is started to be sent to the acquisition node, a request is sent corresponding to an address of each wireless acquisition node, data of the point is received, a monitoring channel is opened after the transmission is completed, and if the data is not received within a preset time, the next node is polled; if the data is received, a small period of time is delayed to poll the next node after the completion of the data until the completion of the task in the group, the data is packed and sent to the wireless gateway node for processing, and a period of time is delayed to wait for the next instruction of the gateway node;
The gateway node firstly monitors a command of an upper computer once initialization is completed, if the command of the upper computer is received, a polling command is started to be sent to a lower wireless relay node, a request is sent corresponding to the address of each wireless relay node, the data of the point is received, a monitoring channel is opened after the data is sent, and if the data is not received within a preset time, the next node is polled; if the data is received, a small period of time is delayed to poll the next node after the completion of the data, until the completion of the task in the group, the data is packed and sent to a server for processing through an RS232/RS 485/Ethernet interface, a period of time is delayed, and an upper computer waits for a next instruction.
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| CN111561961A (en) * | 2020-03-17 | 2020-08-21 | 中国船舶重工集团公司第七一五研究所 | Marine information acquisition system and method for synchronizing additional time information |
| CN111404800B (en) * | 2020-03-25 | 2020-12-15 | 江苏中信博新能源科技股份有限公司 | Hybrid networking communication system and method |
| CN114827776B (en) * | 2022-06-16 | 2024-11-29 | 信息产业电子第十一设计研究院科技工程股份有限公司 | Wireless data acquisition network communication system applied to photovoltaic power generation |
| CN115604674B (en) * | 2022-11-08 | 2023-03-03 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Electromechanical health management system |
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