CN113938972B - Self-adaptive wireless dialing method applied to power grid fusion type terminal - Google Patents
Self-adaptive wireless dialing method applied to power grid fusion type terminal Download PDFInfo
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- CN113938972B CN113938972B CN202111080311.XA CN202111080311A CN113938972B CN 113938972 B CN113938972 B CN 113938972B CN 202111080311 A CN202111080311 A CN 202111080311A CN 113938972 B CN113938972 B CN 113938972B
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- 238000012544 monitoring process Methods 0.000 claims abstract description 6
- 230000005856 abnormality Effects 0.000 claims abstract description 4
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/26—Devices for calling a subscriber
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/165—Performing reselection for specific purposes for reducing network power consumption
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
Abstract
The invention discloses a self-adaptive wireless dialing method applied to a power grid fusion type terminal, which comprises the following steps: the fusion concentrator and the distribution transformer terminal form a fusion terminal, and data are simultaneously accessed to a main station of the marketing and production system; the wireless dialing module App automatically matches user parameters, preferentially selects high-speed network dialing, and records related data; after connection is established, monitoring and recording network state data of all systems; judging the network quality of each system based on a fuzzy comprehensive evaluation algorithm, and adaptively switching the optimal system; when the network is abnormal, the network system is automatically switched, and the network is automatically recovered after the abnormality is relieved; after the network state changes, other apps are notified. The invention can reduce the equipment investment cost and improve the maintenance efficiency on the basis of ensuring the normal operation of the original functions of the concentrator and the distribution transformer terminal. The invention can adaptively select a high-speed network system for connection, and can switch other networks in time when the network fails to ensure the normal operation of the terminal, thereby having good engineering practicability.
Description
Technical Field
The invention relates to the technical field of power distribution network automation, in particular to a self-adaptive wireless dialing method applied to a power grid fusion type terminal.
Background
At present, a smart grid operation control and interactive service system is formed initially according to smart grid construction planning. The distribution transformer area is used as a data source of the marketing system and the distribution system, the concentrator and the distribution transformer terminal are respectively installed on the transformer area side based on respective service demands, and the concentrator and the distribution transformer terminal are independently operated and have the same partial functions, so that an information barrier exists between marketing and distribution, the cost and maintenance workload of transformer area management are greatly increased, and the cost performance is lower.
The main technology of the current wireless dialing is to dial for the appointed network system, or judge the network performance only according to the uplink and downlink thresholds of the flow, and then switch the network system. However, the method does not consider the influence of factors such as packet loss rate, time delay, noise and the like in practical application, and cannot combine with power service to design a switching mechanism from multiple dimensions, so that the self-adaptive capacity is low.
Disclosure of Invention
In order to solve the technical problems, the invention provides a self-adaptive wireless dialing method applied to a power grid fusion type terminal, which can automatically match parameters such as APN, user name, password and the like to carry out dialing connection and automatically switch network systems with higher speed, thereby realizing self-adaptive wireless dialing.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
an adaptive wireless dialing method applied to a power grid fusion type terminal comprises the following steps:
Step 1: constructing a fusion type terminal of a distribution transformer terminal of a concentrator and a distribution service of a marketing service, wherein the physical hardware of the fusion type terminal adopts a modularized design to realize the access of all devices under a distribution area, and application software adopts a container technology and an APP design to simultaneously access data into the marketing service and a distribution service master station; the physical hardware interacts with the application software information through an operating system and a message bus; the application software comprises a basic App and a service App, wherein the basic App comprises a wireless dialing management module App;
Step 2: the wireless dialing management module App identifies the current SIM card operator information and network system, automatically matches corresponding APN, user name and password parameters, preferentially uses the network system with 4G or higher speed to dial, establishes PPP connection, switches APN to retry dialing if the dialing fails, and records the dialing times, failure times and data of last successful time of dialing;
step 3: after dialing is successful, an AT interaction module in the wireless dialing management module App continuously monitors and records network state data of different network modes in a period of time after starting to run;
Step 4: comprehensively judging the network quality corresponding to different network systems by using the network state data through a fuzzy comprehensive evaluation algorithm, sequencing the network quality under each network system, selecting and switching to the network system with the best network quality, automatically switching to the best network system outside the abnormal system when the current network system is monitored to be abnormal, and automatically recovering after the abnormality is relieved;
Step 5: the AT interaction module monitors the current network state in real time, and when the network state changes, the AT interaction module timely sends out a network change message and notifies other apps in the converged terminal through a message bus.
In the above solution, the SIM card operator information in step 2 includes mobile, unicom, and telecom; the network system comprises the following 7 working systems: GSM, WCDMA, LTE, TD-SCDMA, UMTS, CDMA, HDR.
In the above scheme, the network state data in the step 3 includes network traffic sizes, communication packet loss rates, time delays, signal strengths and signal-to-noise ratios under different network formats.
In the above scheme, the specific method for comprehensively evaluating the network quality corresponding to different network systems through the fuzzy comprehensive evaluation algorithm in the step 4 is as follows:
(1) Determining an evaluation factor set: u= { U 1,u2,u3,u4 } = { network traffic size, communication packet loss rate, signal strength, signal to noise ratio };
Determining a judgment grade set: v= { V 1,v2,v3,v4 } = { unblocked, good, crowded, failed };
Determining an evaluation factor weight set: analyzing the influence degree of each evaluation factor on the network quality to obtain a weight set omega= { omega 1,ω2,ω3,ω4 };
(2) Determining the membership degree of the evaluation factors: for each evaluation factor in the evaluation factor set, determining the membership degree of the evaluation factor set relative to each evaluation grade according to experience to obtain a fuzzy matrix R= { R ij } (i is more than or equal to 0 and less than or equal to 4, j is more than or equal to 0 and less than or equal to 4), wherein R ij refers to the membership degree of the evaluation factor u i to the evaluation grade v j;
(3) Calculating a fuzzy comprehensive evaluation index of the network quality of each network system: the larger the y=ω·r·v, the better the network quality representing the corresponding system.
In a further technical scheme, the base App is responsible for managing shared data in different services, and the service App divides the different services according to trend of data flow, including an acquisition service App which is responsible for acquiring and monitoring downlink equipment data of a terminal, a master station service App which is responsible for interfacing with an uplink master station service, and an analysis service App which is responsible for analyzing and acquiring data through edge calculation.
In a further technical scheme, the base App further comprises a data center App, a local communication management App, an expansion module management App, a serial port management App, a bluetooth management App, an traffic acquisition measurement App, a remote signaling pulse sampling App, a security agent App and a security management App.
Through the technical scheme, the self-adaptive wireless dialing method applied to the power grid fusion type terminal has the following beneficial effects:
The invention integrates the concentrator of the marketing service and the distribution transformer terminal of the distribution transformer service, can meet the application requirements of the terminal in different low-voltage distribution areas by configuring the expansion module and the corresponding function APP on the basis of ensuring the normal operation of the original functions, reduces the investment cost of power grid equipment and improves the field maintenance efficiency; the self-adaptive wireless dialing method can automatically match parameters such as APN, user name, password and the like to carry out dialing connection, automatically select a network system with higher speed, timely switch other networks to ensure the normal operation of the terminal when the network fails, timely send out messages to inform other APP in the terminal to make countermeasures when the network state changes, and has good engineering practicability.
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.
Fig. 1 is a schematic diagram of an overall framework of a power grid fusion type terminal according to an embodiment of the present invention;
FIG. 2 is a diagram of an App architecture disclosed in an embodiment of the present invention;
fig. 3 is a schematic diagram of an App wireless dial management module according to an embodiment of the present invention;
Fig. 4 is a flowchart of an adaptive wireless dialing method according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The invention provides a self-adaptive wireless dialing method applied to a power grid fusion type terminal, which is shown in fig. 4 and comprises the following steps:
Step 1: the method comprises the steps of constructing a fusion type terminal of a distribution transformer terminal fused with a concentrator of a marketing service and a distribution service, wherein as shown in fig. 1, physical hardware of the fusion type terminal adopts a modularized design to realize access of all devices under a distribution area, application software adopts a container technology and an APP design, and data is simultaneously accessed to a marketing service and a distribution service main station; the physical hardware interacts with the application software information via the operating system and the message bus.
The application software comprises a basic App and a service App, as shown in fig. 2, the basic App is responsible for managing shared data in different services, and the basic App comprises a data center App, a local communication management App, a wireless dialing management module App, an expansion module management App, a serial port management App, a Bluetooth management App, an traffic acquisition measurement App, a remote signaling pulse sampling App, a security agent App and a security management App.
The service App divides different services according to the trend of the data flow, and comprises an acquisition service class App for acquiring and monitoring the downlink equipment data of the terminal, a main station service class App for interfacing with the uplink main station service and an analysis service class App for analyzing and acquiring the data through edge calculation.
The collection service App comprises a distribution service App and a marketing service App, wherein the distribution service App comprises a low-voltage intelligent switch collection App, a reactive compensation device collection App, a distribution station room environment collection App and the like; the marketing service App comprises an electric meter acquisition task management App, a loop state monitoring App and the like.
The master station service class App comprises IEC104 App, IEC101 App, MQTT-IoT App, low-voltage centralized meter reading App, internet of vehicles cloud communication App and the like.
The analysis service class App comprises an electric energy quality analysis App, a line loss lean analysis App, a topology identification App, a load identification App, a comprehensive fault research judgment App, a distributed energy management App, an electric automobile ordered charging App, a platform region openable capacity prediction App and the like.
Step 2: the wireless dialing management module App identifies the information of the current SIM card operator and the network system, automatically matches the corresponding APN, user name and password parameters, dials by using the network system with the 4G or higher speed preferentially, establishes PPP connection, switches APN to try dialing again if dialing fails, and records the dialing times, failure times and data of last dialing success time.
SIM card operator information includes mobile, corporate, telecommunications; the network system comprises the following 7 working systems: GSM, WCDMA, LTE, TD-SCDMA, UMTS, CDMA, HDR.
As shown in fig. 3, the wireless dial management module App interacts with other apps through MQTT interface messages. The MQTT module has the main functions of MQTT client registration, receiving and processing MQTT messages. The main function of the GUI module is desktop display.
The wireless dialing management module App supports 2 remote communication modules AT most, so that two dialing and AT interaction modules exist. The main function of the wireless dialing management module App is to set APN, execute PPPD command and generate PPP network port. The main functions of the AT interaction module are GPS data acquisition, short message receiving and sending and whether the monitoring module is abnormal or not.
The main function of Manager module is module resource management, which is responsible for allocating dialing ports and recovering unused resources.
The dialing, AT interaction module and Manager module realize the operation of the equipment through the serial port operation API and the equipment operation API.
Step 3: after successful dialing, the AT interaction module in the wireless dialing management module App continuously monitors and records network state data of different network modes in a period of time after starting to operate.
The network state data comprises network traffic sizes, communication packet loss rates, time delays, signal strength and signal to noise ratios under different network systems.
Step 4: and comprehensively judging the network quality corresponding to different network systems by using the network state data through a fuzzy comprehensive evaluation algorithm, sequencing the network quality under each network system, selecting and switching to the network system with the best network quality, automatically switching to the best network system outside the abnormal system when the current network system is monitored to be abnormal, and automatically recovering after the abnormality is relieved.
The specific method for comprehensively judging the network quality corresponding to different network systems through the fuzzy comprehensive evaluation algorithm comprises the following steps:
(1) Determining an evaluation factor set: u= { U 1,u2,u3,u4 } = { network traffic size, communication packet loss rate, signal strength, signal to noise ratio };
Determining a judgment grade set: v= { V 1,v2,v3,v4 } = { unblocked, good, crowded, failed };
Determining an evaluation factor weight set: analyzing the influence degree of each evaluation factor on the network quality to obtain a weight set omega= { omega 1,ω2,ω3,ω4 };
(2) Determining the membership degree of the evaluation factors: for each evaluation factor in the evaluation factor set, determining the membership degree of the evaluation factor set relative to each evaluation grade according to experience to obtain a fuzzy matrix R= { R ij } (i is more than or equal to 0 and less than or equal to 4, j is more than or equal to 0 and less than or equal to 4), wherein R ij refers to the membership degree of the evaluation factor u i to the evaluation grade v j;
(3) Calculating a fuzzy comprehensive evaluation index of the network quality of each network system: the larger the y=ω·r·v, the better the network quality representing the corresponding system.
Step 5: the AT interaction module monitors the current network state in real time, and when the network state changes, the AT interaction module timely sends out a network change message and notifies other apps in the converged terminal through a message bus.
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 (5)
1. The self-adaptive wireless dialing method applied to the power grid fusion type terminal is characterized by comprising the following steps of:
step 1: constructing a fusion type terminal of a distribution transformer terminal fused with a concentrator of a marketing service and a distribution service, wherein the physical hardware of the fusion type terminal adopts a modularized design to realize the access of all devices under a distribution area, and the application software adopts a container technology and an App (application program) design to simultaneously access data into the marketing service and a distribution service master station; the physical hardware interacts with the application software information through an operating system and a message bus; the application software comprises a basic App and a service App, wherein the basic App comprises a wireless dialing management module App;
Step 2: the wireless dialing management module App identifies the current SIM card operator information and network system, automatically matches corresponding APN, user name and password parameters, preferentially uses the network system with 4G or higher speed to dial, establishes PPP connection, switches APN to retry dialing if the dialing fails, and records the dialing times, failure times and data of last successful time of dialing;
step 3: after dialing is successful, an AT interaction module in the wireless dialing management module App continuously monitors and records network state data of different network modes in a period of time after starting to run;
Step 4: comprehensively judging the network quality corresponding to different network systems by using the network state data through a fuzzy comprehensive evaluation algorithm, sequencing the network quality under each network system, selecting and switching to the network system with the best network quality, automatically switching to the best network system outside the abnormal system when the current network system is monitored to be abnormal, and automatically recovering after the abnormality is relieved;
in the step4, the specific method for comprehensively judging the network quality corresponding to different network systems through the fuzzy comprehensive evaluation algorithm is as follows:
(1) Determining an evaluation factor set: u= { U 1,u2,u3,u4 } = { network traffic size, communication packet loss rate, signal strength, signal to noise ratio };
Determining a judgment grade set: v= { V 1,v2,v3,v4 } = { unblocked, good, crowded, failed };
Determining an evaluation factor weight set: analyzing the influence degree of each evaluation factor on the network quality to obtain a weight set omega= { omega 1,ω2,ω3,ω4 };
(2) Determining the membership degree of the evaluation factors: for each evaluation factor in the evaluation factor set, determining the membership degree of the evaluation factor set relative to each evaluation grade according to experience to obtain a fuzzy matrix R= { R ij } (i is more than or equal to 0 and less than or equal to 4, j is more than or equal to 0 and less than or equal to 4), wherein R ij refers to the membership degree of the evaluation factor u i to the evaluation grade v j;
(3) Calculating a fuzzy comprehensive evaluation index of the network quality of each network system: the larger the y=ω·r·v, the better the network quality representing the corresponding system;
Step 5: the AT interaction module monitors the current network state in real time, and when the network state changes, the AT interaction module timely sends out a network change message and notifies other apps in the converged terminal through a message bus.
2. The adaptive wireless dialing method applied to the grid-converged terminal of claim 1, wherein the SIM card operator information in step 2 includes mobile, unicom, and telecom; the network system comprises the following 7 working systems: GSM, WCDMA, LTE, TD-SCDMA, UMTS, CDMA, HDR.
3. The adaptive wireless dialing method applied to the power grid fusion type terminal according to claim 1, wherein the network state data in the step 3 comprises network traffic sizes, communication packet loss rates, time delays, signal strength and signal to noise ratios under different network systems.
4. The self-adaptive wireless dialing method applied to the power grid fusion type terminal according to claim 1, wherein the basic App is responsible for managing shared data in different services, the services App divides the different services according to trend of data flow, and comprises an acquisition service App which is responsible for acquiring and monitoring downlink equipment data of the terminal, a master station service App which is responsible for interfacing with an uplink master station service, and an analysis service App which is responsible for analyzing the acquired data through edge calculation.
5. The adaptive wireless dialing method applied to the power grid fusion type terminal according to claim 1 or 4, wherein the basic App further comprises a data center App, a local communication management App, an expansion module management App, a serial port management App, a bluetooth management App, an exchange metering App, a remote signaling pulse sampling App, a security agent App and a security management App.
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