CN202068233U - Intelligent electrical network supervising device based on embedded CPU - Google Patents
Intelligent electrical network supervising device based on embedded CPU Download PDFInfo
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- CN202068233U CN202068233U CN2011201128856U CN201120112885U CN202068233U CN 202068233 U CN202068233 U CN 202068233U CN 2011201128856 U CN2011201128856 U CN 2011201128856U CN 201120112885 U CN201120112885 U CN 201120112885U CN 202068233 U CN202068233 U CN 202068233U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
Abstract
The utility model relates to an electric energy meter suitable for an intelligent electrical network, and specially relates to an intelligent electrical network supervising device based on an embedded CPU. The intelligent electrical network supervising device based on an embedded CPU includes a core plate and a control plate connected to the core plate, and is characterized in that the core plate is provided with an embedded CPU, and a memory connected with the embedded CPU. In the utility model, with the support of the embedded Vxworks operation system, the functions of the recording of electric energy meter data, data operation and processing, radio communication transmission of WCDMA-3G, load control, Ethernet communication, USB communication, man-machine interaction, etc. are realized. Thus the functions of intelligent acquisition of the user station to the user electric consumption information, and load control, etc. are realized.
Description
Technical field
The utility model relates to the electric energy meter that is applicable to intelligent grid, especially based on the intelligent grid supervising device of embedded type CPU.
Background technology
Along with market-oriented reform advances, the digital economy development, the climate change aggravation, the environment supervision requires the adjustment of strictness day by day and various countries' energy policy, and the relation between electrical network and electricity market, the client is more and more tightr.The client progressively improves the requirement of the quality of power supply, and distributings such as regenerative resource generating resource quantity constantly increases, and traditional electric power networks has been difficult to satisfy these demands for development.For this reason, people propose to develop the imagination of intelligent grid, to realize the upgrading of traditional electrical network.Country is to the transformation and the obviously speed-raising of construction of electrical network, according to strengthening the general requirement that intelligent grid is built, guarantee that the intelligent grid construction specification advances in order, realize the overall goal of power consumer power information acquisition system construction " all standing; the full collection; full pre-payment ", unified and standard power information acquisition system and main website, acquisition terminal, the functional configuration of communication unit, type structure, performance index, communication protocol, safety certification, the method of inspection, under the promotion that clauses such as construction and operational management require and the market demand increases day by day, press for the intelligent electric energy meter that matches with it.
The utility model content
The purpose of this utility model provide a kind of with better function, safe coefficient is higher, the more stable intelligent grid supervising device based on embedded type CPU of operation.
For achieving the above object, the technical solution adopted in the utility model is.
A kind of intelligent grid supervising device based on embedded type CPU comprises core board and connected control board, and its special feature is, on described core board embedded type CPU is installed, and the memory that is connected with embedded type CPU.
Wherein memory is storage chip and flash chip at random.
Wherein also comprise the 3G wireless communication module, thus this 3G wireless communication module is electrically connected with control board and the user main website between realize based on the wireless two-way communication of 3G.
The utility model realizes that ammeter data is made a copy of, functions such as data operation and processing, WCDMA-3G wireless communication transmissions, load control, ethernet communication, usb communication, man-machine interaction under the support of embedded Vxworks operating system.Thereby realize the user main website to the intelligent acquisition of user power utilization information and load control etc. function.The utility model adopts the intelligent grid office terminal for supporting based on AT91SAM9260CU embedded type CPU technology and embedded Vxworks operation system technology, and its beneficial effect first has been created hardware foundation by the hardware circuit design based on AT91SAM9260CU embedded type CPU technology for operation embedded OS Vxworks; It two is to adopt the programming mode of multithreading to solve stability and real-time that multitask execution, multidata are handled, has changed shortcomings such as the speed of service is slow, failure rate is high, data are easily lost; Can also pass through WCDMA-3G wireless telecommunications and high speed fibre network communicating function, in real time the electricity consumption situation of monitor user ' and the ruuning situation of electrical network by the monitoring of main website customized task with call survey in real time together, can be analyzed the operational factor of electricity consumption situation and electrical network; The 3rd, be convenient to add up line loss, can copy the power consumption at reuse family in real time, so that add up line loss accurately; The 4th, the special-purpose ESAM circuit that adopts the close SM1 algorithm of state to support for parameter modification and load control message carry out encryption and decryption, guarantees the fail safe of control; The 5th, multiple functional, simple to operate.
Description of drawings
Accompanying drawing 1 is a logic theory block diagram of the present utility model.
Accompanying drawing 2 is the operation logic figure of the utility model under Vxworks operating system is supported.
Embodiment
As shown in Figure 1, the utility model is integrated on the pcb board by single-phase computation chip, AT91SAM9260CU embedded computer, power indicator light, alarm lamp, tripping operation indicator light, LCD display, memory, power-supply system, relay, infrared reception transmitting tube, RS485 communication, ethernet interface circuit, USB interface etc., and the WCDMA-3G module that can conveniently plug.Whole pcb board is contained in the fire-retardant plastic meter shell, fixes with self-tapping screw, and case and drain pan are fixed together by screw.
Electric energy meter of the present utility model comprises core board and connected control board, and embedded type CPU is installed on core board, and the memory that is connected with embedded type CPU, and wherein memory is RAM (storage at random) chip and NAND FLASH (flash memory) chip.
Also comprise the 3G wireless communication module, specifically adopt the WCDMA-3G wireless communication module, thus this 3G wireless communication module is electrically connected with control board and the user main website between realize based on the wireless two-way communication of 3G.
The utility model utilizes WCDMA-3G wireless communication module and light network communication module binary channels transmission data, realizes pre-payment and remote control function.The data of transmission are divided into general data and enciphered data, and revising terminal parameter and controlling the load director data is enciphered data, and calling together and surveying the user power utilization information data is general data, do not need in Chuan Shu the process to encrypt again.The algorithm that has adopted authentication and encrypted, the Information Security height.The process of transmission is that transmitting terminal will send after with data encryption according to the function needs, and receiving terminal carries out operations necessary after with the data decryption of receiving again, and transmitting terminal is sent confirm that data notification operates successfully or fail.
To revise the operational factor of terminal such as main website, earlier message is adopted the close algorithm SM1 of state to encrypt the back and send to the intelligent grid office terminal by WCDMA-3G communication and light network communication module binary channels link with the form that expressly adds MAC, by special-purpose ESAM circuit deciphering back decision operation content, make amendment according to message commands the message received in the intelligent grid office terminal to self parameter.Secondly, main website controls user load according to the user power utilization informational needs, and adopting uses the same method issues the intelligent grid office terminal with order, and the intelligent grid office terminal cuts off or the connecting subscribers participating load according to order request.For the transmission of general data, main website sends request in mode expressly to terminal, and terminal is replied corresponding data and given main website according to the order request that receives.Realize the control of main website to user power utilization management of information and electricity consumption situation.
Operation principle of the present utility model is:
The one, electric energy computation chip is gathered the real-time power network parameter, the AT91SAM9260CU embedded type CPU by the SPI interface with the data of computation chip collection analyze, calculation process, and the data after the analyzing and processing are kept in ram region and the memory; The 2nd, the AT91SAM9260CU embedded type CPU is by control WCDMA-3G wireless communication module and light network communication module, with the message of the receiving processing of classifying, at first be decrypted if the message that receives is parameter modification order or load control command, make respective handling after allowing and main website is carried out the message answer by special-purpose ESAM module based on the close algorithm SM1 of state; If the message that receives is that general data is called survey together, terminal is packed to request msg according to order request and is handled and send to main website by WCDMA-3G module or light network communication module.The 3rd, AT91SAM9260CU embedded type C UP, carries out data to online multifunction electric meter and makes a copy of under the support of DL/T645-2007 multifunction electric meter communication protocol by the RS485 bus.The 4th, the AT91SAM9260CU embedded type CPU is shown to the onsite user by dot matrix LCD with the operational factor and the part real time data of terminal.The 5th, the user can also cooperate LCD to show and terminal realization man-machine interaction by keyboard; The 6th, the user can also make amendment to end message by infrared interface.
The WCDMA-3G communication module adopts the ENFORA0306 of U.S. ENFORA company in the utility model, cooperate with the independent power circuit of periphery design and level shifting circuit and to have formed the WCDMA-3G communication function, the AT91SAM9260CUAT91SAM9260CU embedded type CPU that embedded type CPU adopts American ATMEL to produce, mainly according to all incidents of measuring parameter record sheet, be responsible for driving modules such as WCDMA-3G and carry out transfer of data, and function managements such as hardware clock RX8025T, the moon, day summary with external memory storage, ESAM module and CPU card and LCD.
Also have teledata to receive, send LED light in addition, indication intelligent management terminal is carried out transfer of data, the main website management system can be carried out the parameter setting to the intelligent management terminal, purchase operations such as electric weight writes, data copy reading in advance by the WCDMA-3G communication network, intelligent terminal also can initiatively report the task and the abnormal conditions of customization, to the transmission The data means such as brand-new authentication, encryption, verification, the safety of data transmission height, transmission is reliable.
Main feature of the present utility model is as follows:
A) adopt based on advanced technologies such as the AT91SAM9260CU CPU of ATMELE91SAM9260CU and embedded Vxworks, under the support of the programming theory of multithreading, multitask, make the task of intelligent management terminal processes parallel processing complexity become possibility, improved the operating efficiency of CPU greatly.CPU is that mode with timeslice is the course allocation CUP processing time, when a process goes to finish several things in a synchronous manner, this process must have been finished first thing and do second thing later on again, finishes the thing that will do to the CPU request so according to priority.Under this single-threaded mode of operation, if CUP is regarded as one has 100 timeslices, CPU may just spend 10 timeslices wherein to handle the thing that current process will be done always, just used 10% the timeslice of CPU, and other times have all wasted, and certainly, in fact the mode of operation of CPU is still finished something and done another part thing later on again, just the processing speed of CUP is very fast, soon the facts of finishing dealing with and being asked.In order to improve the utilization rate of CPU, the mode of employing multithreading is gone to finish several things simultaneously and is not disturbed mutually, to finish three things 1,2,3 as current process, CPU can handle this 3 things with 10% time respectively simultaneously so, thereby allow the utilization rate of CPU reach 30%, improved the utilance of CPU widely.It is especially obvious that the getting well of multithreading is in some its advantages of special occasion of processing.Upload data such as the intelligent management terminal, to to make a copy of and preserve ammeter data while uploading also, in this case, if multithreading of no use, it is not unexpected that words generally all can block main thread, such as the subprogram of the checking meter task of checking meter of to stop, wait for that data upload finishes the back in the task of checking meter, very possible like this that ammeter data constantly of losing.Adopt the such problem of multithreading just to be readily solved.Under the support of this technology, the intellectuality of terminal and multifunction have been avoided the cooperative situation of polylith MCU.
B) application of embedded Vxworks operating system is solved a lot of reluctant problems.Vxworks is the very powerful embedded OS of function, and it can be applied to based on Intel x86 series CPU or various embedded type CPU for example on the computer of AT91SAM9260CU.Vxworks is celebrated with its high efficiency and flexibility, has multitask, multi-user's ability.Vxworks operating system software bag not only comprises complete Vxworks operating system, but also has comprised application software such as text editor, high-level language compiler.Why Vxworks is subjected to liking of vast hacker, main cause has two, the version of embedded Vxworks operating system Vxworks operating system on embedded type CPU AT91SAM9260CU that this project is used, it has kept the most of function of Vxworks operating system, makes intelligent terminal aspect Ethernet and being applied to for may of USB aspect.The indispensable ICP/IP protocol station system of Ethernet exploitation that the embedded Vxworks operating system nucleus that this intelligent terminal uses is integrated, for the ethernet communication function of main website and terminal provides strong support, under the situation that the WCDMA-3G communication module can't be worked, finishing transformation task with the communication mode of Ethernet becomes possibility.Secondly, the user can also by USB interface, be stored in outside moving with the terminal inner significant data and deposit on the mouse equipment, for example: USB flash disk etc. according to the needs of oneself.
C) remote control function: because power consumer power information intelligent grid watch-dog has the WCDMA-3G communication interface, but the time real remote monitoring electric energy meter the electricity consumption situation, at the practicable Long-distance Control of the load of multiplexing electric abnormality, cut off power supply.
D) automation centralized management: the WCDMA-3G communication interface of power consumer power information intelligent grid watch-dog cooperates perfect user backstage main website management system, form the automation centralized management, adopt computer management, data are accurately convenient, more can the time real monitoring ammeter electricity consumption situation, the information of each side such as the acquisition management of power use, toll administration, electricity consumption line loss statistics, analysis and electric power safety operation that can be promptly and accurately.
E) intelligent and safe authentication: adopt intelligent and safe authentication ESAM system based on the close algorithm SM1 of state, this system expressly adds the form of MAC, parameter modification order, load control command that main website issues are encrypted, the intelligent management terminal is decrypted downward message by operating special-purpose ESAM decrypt circuit, legal message is in time corresponding, illegal packet abandons, and the fail safe that has improved main website terminal Core Feature control like this and revised has solved the hidden danger of illegal modifications parameter and control;
F) rate controlled function.Charging way has tou power price and ladder electricity price, the tou power price electric energy meter add up according to point, peak, forward and reverse power consumption flat, each rate of paddy and, carry out data qualification by the electricity price of corresponding rate respectively.The user main website realizes load control according to user power utilization information and rate information by the intelligent grid management interrupt;
F) instantaneous parameter measurement: but parameters such as intelligent management terminal measuring voltage, live wire electric current, neutral line current, power, power factor.
The content that is not described in detail in this specification belongs to this area professional and technical personnel's known prior art.
Claims (3)
1. the intelligent grid supervising device based on embedded type CPU comprises core board and connected control board, it is characterized in that: on described core board, embedded type CPU is installed, and the memory that is connected with embedded type CPU.
2. the intelligent grid supervising device based on embedded type CPU as claimed in claim 1 is characterized in that: wherein memory is storage chip and flash chip at random.
3. the intelligent grid supervising device based on embedded type CPU as claimed in claim 1, it is characterized in that: wherein also comprise the 3G wireless communication module, thereby this 3G wireless communication module is electrically connected with control board and the user main website between realize based on the wireless two-way communication of 3G.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011201128856U CN202068233U (en) | 2011-04-21 | 2011-04-21 | Intelligent electrical network supervising device based on embedded CPU |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011201128856U CN202068233U (en) | 2011-04-21 | 2011-04-21 | Intelligent electrical network supervising device based on embedded CPU |
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| CN202068233U true CN202068233U (en) | 2011-12-07 |
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| CN2011201128856U Expired - Fee Related CN202068233U (en) | 2011-04-21 | 2011-04-21 | Intelligent electrical network supervising device based on embedded CPU |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751784A (en) * | 2011-04-21 | 2012-10-24 | 宁夏隆基宁光仪表有限公司 | Device for monitoring smart grid based on embedded CPU |
| CN104283675A (en) * | 2013-07-10 | 2015-01-14 | 中兴通讯股份有限公司 | Concentrator, electricity meter and message processing method of concentrator and electricity meter |
| CN109713786A (en) * | 2017-10-26 | 2019-05-03 | 上海置信电气股份有限公司 | A kind of power distribution station intelligence distribution transformer terminals |
-
2011
- 2011-04-21 CN CN2011201128856U patent/CN202068233U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751784A (en) * | 2011-04-21 | 2012-10-24 | 宁夏隆基宁光仪表有限公司 | Device for monitoring smart grid based on embedded CPU |
| CN104283675A (en) * | 2013-07-10 | 2015-01-14 | 中兴通讯股份有限公司 | Concentrator, electricity meter and message processing method of concentrator and electricity meter |
| WO2015003512A1 (en) * | 2013-07-10 | 2015-01-15 | 中兴通讯股份有限公司 | Concentrator, ammeter, and message processing method therefor |
| CN109713786A (en) * | 2017-10-26 | 2019-05-03 | 上海置信电气股份有限公司 | A kind of power distribution station intelligence distribution transformer terminals |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20160421 |
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| CF01 | Termination of patent right due to non-payment of annual fee |