CN206181093U - Grid -connected PV web monitoring system based on linux - Google Patents
Grid -connected PV web monitoring system based on linux Download PDFInfo
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- CN206181093U CN206181093U CN201621005786.7U CN201621005786U CN206181093U CN 206181093 U CN206181093 U CN 206181093U CN 201621005786 U CN201621005786 U CN 201621005786U CN 206181093 U CN206181093 U CN 206181093U
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Abstract
The utility model discloses a grid -connected PV web monitoring system based on linux, including grid -connected PV system, obs core control ware FPGA, web server, computer or mobile terminal etc. Wherein obs core control ware FPGA adopts different structure double -core mode, 1 control signal who produces the grid -connected PV system of nuclear, and nuclear 0 carries on the linux system and moves functions such as network service, data storage and monitoring. Build the linux system in obs core control ware FPGA's nuclear 0, carry out grid -connected PV web monitoring system's design, include: the web server selects and system architectural design, common gateway interface (CGI) design, the database is selected and with CGI communication design, web monitoring interface's design, provided at last and examined 0 application design, the start -up of different structure dual -core processor and communication mode selection etc. The CGI interfacing that selects enables the server and produces fine interaction with the webpage, the boa server transplanted occupies that the resource is few, system overhead low, monitoring system based on web can monitor grid -connected PV system state by anytime and anywhere.
Description
Technical field
The utility model is related to new energy field, more particularly to a kind of grid-connected Web monitoring systems based on Linux.
Background technology
With the supply of the traditional energies such as the quick consumption of the global reserves energy, coal, oil, natural gas it is more tight
, in order to the exploitation for alleviating a regenerative resources such as energy and environment crisis, wind energy, solar energy are paid high attention to.
Photovoltaic generation as a kind of forms of electricity generation of new forms of energy, with all well and good development prospect.But it is affected by environment larger, and by
In the discontinuous and uncertainty for generating electricity, the electrical network quality of power supply, or even the normal fortune for affecting electrical network can be affected when being incorporated into the power networks etc.
OK.In order to understand grid-connected system operation conditions in real time and be controlled system, need to supervise photovoltaic power generation grid-connecting system
Control.
Monitoring system is the high-tech product for integrating control technology, computer technology and network technology, for industry
Monitoring, control and the management of system, has the advantages that real-time, controling power is strong and convenient and reliable.Computer, automation and logical
The development of the technologies such as letter, makes monitoring system be changed into centralized Control from traditional collecting and distributing control, while it is also established for remote management
Good basis.
With the popularization developed rapidly with internet of computer technology, Web technologies are also used widely.Web technologies
It is that long-range monitoring and management provide a kind of new method, operator can be carried out in different location by Web to control system
Monitoring, understands at any time the running status of system and carries out corresponding management and control.System is provided the user based on the network monitoring pattern of web
One graphical interfaces, can solve multi-platform Interoperability, realize system monitor in real time, and being one is worth research and the skill explored
Art.
Utility model content
The purpose of this utility model is to provide a kind of grid-connected Web monitoring systems based on Linux, to realize photovoltaic
The real-time remote monitoring of grid-connected system.The utility model is mainly adopted the following technical scheme that：
A kind of grid-connected Web monitoring systems based on Linux, including：Photovoltaic parallel in system, core controller FPGA,
Web server, SQLite databases, computer or mobile terminal etc..Core 1 in photovoltaic parallel in system and core controller FPGA
It is connected, Web server is then connected with core 0, and FPGA inner cores 1 can carry out real time data and interact with core 0, meanwhile, Web server
It is connected with computer or mobile terminal.Wherein, core controller FPGA adopts heterogeneous dual-core pattern, core 1 to produce photovoltaic parallel in system
Control signal, core 0 carry linux system carry out the functions such as operational network service, data storage and monitoring.First in core control
Linux system is built in the core 0 of device FPGA；Then the design of grid-connected Web monitoring systems is carried out, including：Web server is selected
Select and its architectural framework design, CGI (CGI) are designed, database is selected and its monitored with CGI communication schemes, Web
The design at interface；Finally give the application programming of core 0, heterogeneous dual-core processor start and communication mode is selected etc..
Linux adopts B/S frameworks, and by Web network services, user can be realized to photovoltaic using computer or mobile terminal accessing webpage
The long-range monitoring of grid-connected system.
Preferably, Zynq-7000 models of the core controller FPGA from heterogeneous dual-core.In FPGA, system work(
Can realize main including three layers：Hardware layer, system layer and application layer.In FPGA, core 1 realizes the related control of photovoltaic parallel in system
System, mainly completes MPPT, SPWM, CAP and ADC scheduling algorithm programming, and the transplanting linux system of core 0 realizes that photovoltaic is monitored, bag
Include：Telnet, data storage and man-machine interaction etc., while dinuclear can also carry out real time data interaction.
Preferably, the utility model gives the linux system of core 0 and realizes overall architecture, including transplanting compiling Uboot,
The linux system file such as Kernal, Devicetree and Rootfs, is called by cgi script, realizes web interface and main frame
Information exchange.Write the application program of multithreading simultaneously, receive comprising web data and send thread, database purchase thread,
The thread such as communication thread, overcurrent-overvoltage and system exception protection between double-core.
Preferably, the Web server selects the high Boa embedded servers of small volume, performance, and it responds fast, resource
Expense is little, can support dynamic CGI and open source.Using CGI as Boa servers and the standard interface of application program,
CGI interfacings can make server produce good interactivity with browser.The small-sized SQLite databases of Systematic selection, it occupies
Resource is few, overhead is low, using simple and flexible.Man-machine interface is write based on HTML/JSP language, mainly there is login circle
Face, photovoltaic administration interface, real time information display interface and historical data display interface.
Preferably, Linux interprocess communications (IPC) mode selects as follows：Message queue is used for Web page Jing CGI
Data, including instruction and low volume data are sent to the webserver；Shared drive is sent in web for CGI and shows in real time, ring
Environment information includes line voltage, electric current, DC bus-bar voltage, electric current and output voltage, electric current etc.；Semaphore is used to complete thread
Between synchronization and mutex mechanism, it is ensured that critical resource is safe and reliable；Signal comes for the signal that reception system signal and user specify
Complete corresponding operation etc.；Socket is used for network service between many main frames, is easy to system maintenance and extension.
Preferably, the core 0 not only runs Linux and realizes that Web is monitored, while waking up and monitoring core 1, and carries out with core 1
Communication.
Preferably, the mechanism that the operation of the core 0 linux system, core 1 run grid-connected application program is a kind of asymmetric
Heterogeneous multiprocessor system, is an important breakthrough of embedded development.In FPGA, core 0 has publicly-owned resource (such as the overall situation with core 1
Timer) and private privileges (such as privately owned interruption), they realize communicating by publicly-owned resource OCM.OCM is in one piece of continuous internal memory
Middle distribution resource, it is one piece of shared drive, needs the address after mapping using internal memory to access.Exist under facility inventory/
Dev/shm device files, the initial mapping address of the shared drive that can be obtained by open functions and mmap functions.In a program
Macrodefinition is carried out, wherein COMM_BASE is the start physical address of double intercore communications, and corresponding side-play amount is added after access map
Mailing address, you can realize double intercore communications.Employing question and answer mechanism in addition avoids dinuclear from producing communication contention aware.
The utility model has the advantage of：
1st, Dinuclear Systems are easy to expand, and low-profile and process performance is powerful is used low in energy consumption, produce heat few；
2nd, selected CGI interfacings can make server and webpage produce good interactivity；The Boa servers of transplanting take
Resource is few, overhead is low；Double-core question and answer communication mechanism can be prevented effectively from two internuclear communication contention awares.
3rd, the monitoring system based on Web can be monitored whenever and wherever possible to photovoltaic parallel in system state.
The technique effect of design of the present utility model, concrete structure and generation is made furtherly below with reference to accompanying drawing
It is bright, to be fully understood from the purpose of this utility model, feature and effect.
Description of the drawings
Fig. 1 is the grid-connected Web monitoring systems structure chart based on Linux of the present utility model；
Fig. 2 is double-core FPGA system functional block diagram of the present utility model；
Fig. 3 is the software architecture diagram of core of the present utility model 0；
Fig. 4 is Web server architectural framework figure of the present utility model；
Fig. 5 is CGI workflow diagrams of the present utility model；
Fig. 6 is linux system programming organization figure of the present utility model；
Fig. 7 is double-core Principle of Communication figure of the present utility model；
Fig. 8 is the Booting sequence figure of core of the present utility model 0；
Fig. 9 is User logs in authentication flow chart of the present utility model；
Figure 10 is the User logs in interface of Web page system of the present utility model；
Figure 11 is user profile matching test figure of the present utility model；
Figure 12 is user management flow chart of the present utility model；
Figure 13 is the grid-connected administration interface of Web page system of the present utility model；
Figure 14 is the real-time display interface of photovoltaic information of Web page system of the present utility model；
Figure 15 is historical data management flow chart of the present utility model；
Figure 16 is the historical data display interface of Web page system of the present utility model.
Specific embodiment
Below in conjunction with the accompanying drawings the utility model is described in further detail with specific embodiment.
A kind of grid-connected Web monitoring systems based on Linux, its structure is as shown in Figure 1.System mainly includes：Photovoltaic
Grid-connected system, core controller FPGA, Web server, SQLite databases, computer or mobile terminal etc..Grid-connected system
System is connected with the core 1 in core controller FPGA, and Web server is then connected with core 0, and FPGA inner cores 1 can be carried out in real time with core 0
Data interaction, meanwhile, Web server is also connected with computer or mobile terminal.Wherein, core controller FPGA adopts heterogeneous dual-core
Pattern, core 1 produce photovoltaic parallel in system control signal, core 0 carry linux system come operational network service, data storage and
The functions such as monitoring.Build linux system in the core 0 of core controller FPGA first；Then grid-connected Web monitorings system is carried out
The design of system, including：Web server is selected and its architectural framework design, CGI (CGI) design, database selection
And its with CGI communication schemes, the design of Web monitoring interfaces；Finally give application programming, the heterogeneous dual-core process of core 0
Device starts and communication mode is selected etc..Linux adopts B/S frameworks, and by Web network services, user can be using computer or movement
Terminal access webpage, realizes the long-range monitoring to photovoltaic parallel in system.
Zynq-7000 models of the core controller FPGA from heterogeneous dual-core.In FPGA, systemic-function realizes main bag
Include three layers：Hardware layer, system layer and application layer, its functional block diagram is as shown in Figure 2.In FPGA, core 1 realizes photovoltaic parallel in system
Relevant control, mainly completes MPPT, SPWM, CAP and ADC scheduling algorithm programming, and the transplanting linux system of core 0 realizes that photovoltaic is supervised
Survey, including：Telnet, data storage and man-machine interaction etc., while dinuclear can also carry out real time data interaction.
Fig. 3 gives the software of core controller FPGA core 0 and realizes overall architecture, including transplanting compiling Uboot,
The linux system file such as Kernal, Devicetree and Rootfs, devises Web interactive interfaces, is called by cgi script, real
The information exchange of existing web interface and main frame.The application program of multithreading has been write simultaneously, and line has been received and sent comprising web data
The thread such as communication thread, overcurrent-overvoltage and system exception protection between journey, database purchase thread, double-core.
Web photovoltaics monitoring system selects the high Boa embedded web servers of small volume, performance, and it responds fast, resource and opens
Pin is little, can support dynamic CGI and open source.Fig. 4 gives Web server architectural framework.Taken as Boa using CGI
The standard interface of business device and application program, the small-sized SQLite databases of Systematic selection, it occupies, and resource is few, overhead is low, makes
Use simple and flexible.Man-machine interface is write based on HTML/JSP language, mainly there is login interface, photovoltaic administration interface, in real time
Information display interface and historical data display interface.
CGI is CGI, and it is the standard interface between systematic difference program and Web server, can make CGI
Program and Web server carry out information transmission, and CGI interfacings can make server produce good interactivity with browser.Its
Workflow diagram is as shown in Figure 5.During compiling CGI application programs, need to be comprising corresponding documents, wherein cgi.c such as cgi.c and cgi.h
The interface function and variable of CGI application programs defined in file, and the function in cgi.c files is stated in cgi.h files
Interface and variable, generating the file destination specified need to pass through the text that self-defining source file combines compiling generation .cgi with cgi.c
Part.When webpage submits Form lists to, i.e., corresponding .cgi file destinations in www/cgi.bin/ can be called, while service
Device calls corresponding .cgi also to transmit information to webpage.
When linux system performs application program, program has to pass through that cross-compiler is compiled, and is the mesh of ARM forms
Mark file.After linux system starts, add application program in/etc/init.d/rcS start script, you can realize application
The starting up of program.System needs to perform multiple threads after starting, including the control command line that reception Web page is sent
Journey, send data to Web page show thread, between database thread, double-core the protection such as communication thread, overcurrent-overvoltage thread and be
The abnormal thread of system.Linux system programming organization is as shown in Figure 6.Linux interprocess communications (IPC) mode is selected such as
Under：Message queue is used for Web page Jing CGI and sends data, including instruction and low volume data to the webserver；Shared drive is used
It is sent in web in CGI and shows in real time, environmental information includes line voltage, electric current, DC bus-bar voltage, electric current and output electricity
Pressure, electric current etc.；Semaphore is used to complete the synchronization and mutex mechanism of cross-thread, it is ensured that critical resource is safe and reliable；Signal is used to connect
Receive signal that system signal and user specify to complete corresponding operation etc.；Socket is used for network service between many main frames, is easy to
System maintenance and extension.
The mechanism that the operation linux system of core 0, core 1 run grid-connected application program is a kind of asymmetric isomery multiprocessing
Mechanism, is an important breakthrough of embedded development.In FPGA, core 0 has publicly-owned resource (such as Global Timer) and private with core 1
There is resource (such as privately owned interruption), they realize communicating by publicly-owned resource OCM.OCM distributes resource in one piece of continuous internal memory,
It is one piece of shared drive, needs the address after mapping using internal memory to access.Presence/dev/shm the equipment under facility inventory
File, the initial mapping address of the shared drive that can be obtained by open functions and mmap functions.Macrodefinition is carried out in a program,
Wherein COMM_BASE is the start physical address of double intercore communications, plus the mailing address of corresponding side-play amount after access map,
It is capable of achieving to be communicated between double-core.Employing question and answer mechanism in addition avoids dinuclear from producing communication contention aware.Double-core Principle of Communication such as Fig. 7 institutes
Show.I.e. when core 1 sends data to core 0, core 1 puts 1 by mark is sent, while sending data.The circulation of core 0 is read and sends mark, if
Send mark and put 1, that is, read data and clear to send mark.In the same manner, data are sent when core 1 receives core 0, core 0 will receive mark
1 is put, while receiving data.The circulation of core 1 is read and receives mark, if receiving mark puts 1, that is, is read data and is removed reception mark.
The Booting sequence of core controller FPGA core 0 realizes that Web is monitored as shown in figure 8, core 0 not only runs Linux, while calling out
Wake up and monitor core 1, and communicated with core 1.Completed based on the network service of linux system using B/S frameworks, realization is remotely stepped on
Record, in real time display, warning and history data store function.
The design of WEB webpages mainly includes：User profile is stored and checking, the registration of system administrator information and history number
According to information Store etc..Fig. 9 is the utility model User logs in authentication flow chart.Enter first when user is using Web server
Row authentication.Logging in first needs registration, is interacted by CGI and SQLite, and user name is stored in database, calls
Sqlite3_open () function opens database, and by sqlite3_get_tab () function data are read.Cgi script is user
The username and password information sent from browser is matched with database data, if success, jumps to photovoltaic main interface
Html web page, otherwise jumps to the former page and logs in again.Its corresponding User logs in interface is as shown in Figure 10.Figure 11 is to log in letter
Breath matching test figure, top half is that the username and password for printing is matched from database, and the latter half is User logs in
Username and password, if the match is successful, point out " Login successful！", and main interface is redirected, otherwise can not point out
Work(, and jump back to login interface.Figure 12 is user management flow chart of the present utility model.When user management is started, system please
The username and password of input keeper is sought, is matched with data in database, determine whether keeper.When be defined as pipe
The laggard access customer administration interface of reason person's authority, keeper can carry out the operation such as user's registration, deletion in interface.Its corresponding net
The grid-connected administration interface of page system is as shown in figure 13.Figure 14 is that the photovoltaic information of Web page system of the present utility model shows in real time
Show interface.Including each variable states information of grid-connected system and system overall operation status information.Figure 15 is of the present utility model
Historical data management flow chart.The webserver can transmit at set intervals the real time information of photovoltaic system in Web page,
Including the information such as line voltage, electric current, DC bus-bar voltage, electric current and output voltage, electric current.System by the data for receiving deposit to
In database, user can inquiry system historic state information at any time according to demand.Determine whether abnormal data simultaneously, if so,
Then it is marked and reports to the police.The historical data display interface of its corresponding Web page system is as shown in figure 16.It is described in detail above
Preferred embodiment of the present utility model.It should be appreciated that the ordinary skill of this area just can basis without the need for creative work
Many modifications and variations are made in design of the present utility model.Therefore, all technical staff in the art are according to of the present utility model
Design by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should on the basis of existing technology
In the protection domain being defined in the patent claims.
Claims (7)
1. a kind of grid-connected Web monitoring systems based on Linux, it is characterised in that including photovoltaic parallel in system, core control
Device FPGA, Web server, computer or mobile terminal, the photovoltaic parallel in system is configured to and the core controller
Core 1 in FPGA is connected, and the Web server is then configured to be connected with the core 0 in the core controller FPGA, the core
Core 1 inside heart controller FPGA can carry out real time data and interact with core 0, meanwhile, Web server is also with computer or movement eventually
End connection；Wherein, core controller FPGA adopts heterogeneous dual-core pattern, core 1 to produce the control signal of photovoltaic parallel in system, core 0
Carry linux system and come operational network service, data storage and monitoring function.
2. grid-connected Web monitoring systems according to claim 1, it is characterised in that the core controller FPGA is
The Zynq-7000 of heterogeneous dual-core；In core controller FPGA, system work(is configured to hardware layer, system layer and application layer；Its
In, core 1 is configured to realize MPPT, SPWM, CAP and ADC control of photovoltaic parallel in system that core 0 is configured to transplant Linux systems
System realizes that photovoltaic is monitored, including：Telnet, data storage and man-machine interaction, while dinuclear is configured to be counted in real time
According to interaction.
3. grid-connected Web monitoring systems according to claim 1, it is characterised in that the overall architecture of the core 0 includes
The application program of the linux system file, Web interactive interfaces and multithreading of transplanting compiling, the Web interactive interfaces pass through CGI
The information exchange of web interface and main frame is realized in routine call, and the application program of the multithreading is received comprising web data and sent
Communication thread, overcurrent-overvoltage and system exception protection thread between thread, database purchase thread, double-core.
4. grid-connected Web monitoring systems according to claim 1, it is characterised in that Web server is configured to Boa
Embedded, the standard interface of Boa servers and application program adopts CGI；Database Systems are small-sized SQLite databases；It is man-machine
Interface includes login interface, photovoltaic administration interface, real time information display interface and historical data display interface.
5. grid-connected Web monitoring systems according to claim 1, it is characterised in that Linux interprocess communication mode quilts
It is configured to：Message queue is used for Web page Jing CGI and sends data, including instruction and low volume data to the webserver；In shared
Deposit to be sent in web for CGI and show in real time, environmental information includes line voltage, electric current, DC bus-bar voltage, electric current and defeated
Go out voltage, electric current etc.；Semaphore is used to complete the synchronization and mutex mechanism of cross-thread, it is ensured that critical resource is safe and reliable；Signal is used
The signal specified in reception system signal and user is completing corresponding operation etc.；Socket is used for network service between many main frames,
It is easy to system maintenance and extension.
6. grid-connected Web monitoring systems according to claim 1, it is characterised in that the core 0 not only runs Linux
Realize that Web is monitored, while waking up and monitoring core 1, and communicated with core 1.
7. grid-connected Web monitoring systems according to claim 1, it is characterised in that the operation linux system of the core 0,
The core 1 runs grid-connected application program, and the core 0 is configured to publicly-owned with the publicly-owned resource of core 1 and private privileges
Resource OCM realizes communication, and the OCM is configured to distribute resource in one piece of continuous internal memory, using the ground after internal memory mapping
Location is accessing；The core 0 employs question and answer mechanism and avoids dinuclear from producing communication contention aware with core 1.
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| CN201621005786.7U CN206181093U (en) | 2016-08-30 | 2016-08-30 | Grid -connected PV web monitoring system based on linux |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110545319A (en) * | 2019-08-23 | 2019-12-06 | 武汉久同智能科技有限公司 | design of SoC core system and method for realizing task communication between cores |
| CN113079138A (en) * | 2021-03-23 | 2021-07-06 | 哈尔滨理工大学 | Online filtering system for biological information data |
| CN113342123A (en) * | 2021-05-20 | 2021-09-03 | 上海电机学院 | MPPT control method based on butterfly optimization algorithm |
-
2016
- 2016-08-30 CN CN201621005786.7U patent/CN206181093U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110545319A (en) * | 2019-08-23 | 2019-12-06 | 武汉久同智能科技有限公司 | design of SoC core system and method for realizing task communication between cores |
| CN113079138A (en) * | 2021-03-23 | 2021-07-06 | 哈尔滨理工大学 | Online filtering system for biological information data |
| CN113342123A (en) * | 2021-05-20 | 2021-09-03 | 上海电机学院 | MPPT control method based on butterfly optimization algorithm |
| CN113342123B (en) * | 2021-05-20 | 2023-05-02 | 上海电机学院 | MPPT control method based on butterfly optimization algorithm |
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