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– Axis, Pet Shop Boys
“He's talking about, All these bitches in the party wanna fu** me He treats them the way he feels, which is ugly Misery hates itself and loves company So thirsty for that feeling Desperately need to believe what they're hearing so Their smiley face replace the mirror Feed that ego, let's just feel, though Stage got to be extra tall cause he feels low Libido fill the holes in a beer so Make em scream, make em cream, make em bend Make him forget he's more naked than them In the land of make-believe and pretend She loves him up like a husband But he got hundreds of these, it's disgusting Silly little boy, do you think that she doesn't? Buzzards need buzzards, these are not lovers Two scared suckers masturbating on each other Don't forget to wear your rubbers When you're high off the.. ”—Brother Ali - Electric Energy
PV devices benefit environment
Check our our solar panel mounting services for both the ground and roof. We use PV devices, which have been reported to generate 7-17% of electric energy from light energy.
The electric energy meter communication of the pass disposes and measures the design with the supervising system
With the establishment and industrial development of electricity in China of socialist market economy system, it has already been the trend of the times that the electricity moved towards the market as a kind of goods, the commercialized operation of the electric wire netting has already been launched progressively with management. Especially recent years, the construction and modal diversification of the investment of the power plant, make the property right of the new, enlargement power plant of the great majority already no longer been that the country has been exclusive, ” separate the foctory and network, surf the Net at a competitive price ” It is a development trend in the future, in order that the electric quantity carries on exact evaluation to surfing the Net, there must be one set to measure accurately and operating the reliable measuring system [1 ]. The traditional electric energy measuring apparatus has low precision, the low grade defect of automaticity, it is unable to meet the needs of new situation, so set up and measure for the electric energy charge system on foundation with the electric energy, it is urgent requirements of realizing commercialized operation of electric wire netting to improve the electric energy long-range precision, uniqueness, reliability and timeliness that gathers, transmits, deals with.
At present, pass electric energy meters in converting station and power plant are all multi-functional electric meters of the whole electronic formula, the electric energy measures the charge system and communicates with the pass electric energy meter directly in the pass, either terminal to communicate and read his measurement charging data that are gather and turn into with pass electric energy meter in distant place through electric energy. According to experience that the system ran in the past, because the communication configuration parameter mismatch of the electric energy meter of the pass causes system and pass electric energy meter communication interrupt, the electric energy meter of the new clothes can not be inserted slowly systematically, lose and measure the machine format situation of charging and take place repeatedly, have influenced the electric energy of the pass to measure the normal operation of the charge system seriously.
The design philosophies of 2 systems
(1) Reliable and practical. Should be able to totally meet the requirement of monitoring of the line loss online and market of simulation within electric wire netting.
(2) Advance. Choose the most advanced hardware platform and main product at present, guarantee advance and expandability of the system, in order to the requirement of staging and spare part after guaranteeing. The pass ammeter should choose the multi-functional electric energy meter of intelligence, and have serial communication ports, can carry on communication through canonial stipulations and electric energy meter, to measure the disposition of every parameter of the ammeter.
(3) Uniqueness and conformance. Data base niformation keeps unanimity with the data base niformation on the monitoring center computer, should guarantee the electric quantity data are not lost in any fixed time quantum of every pass meter, normalization of communication of concurrent implementation.
(4) Opening. This system must be open structure, operating system, data base system, communication protocol, interface,etc. chosen must accord with the open system standard.
(5) System should have superior characteristic / price than.
Purpose of 3 system design
The communication of the pass electric energy meter of the access system disposes information and manages effectively; Before the electric energy meter reaches field installation, measure the communication function of the electric energy meter effectively, guarantee it accords with the requirement for measuring the charge system of electric energy of the pass with the communication function that the communication of electric energy meter running live is disposed.
Dispose and measure the situation with in-service use of supervising system according to the communication of the electric energy meter of the pass, two kinds of usage mode of system design: Such as (Fig. 1) The communication measuring the central machine room and setting up the electric energy meter of the pass disposes detection and supervising system, to the overall situation ’ Company) Communication of electric energy meter last information and go on to manage in unison,to mounting onto communication of electric energy meters Living disposing and go on in batches measuring communication function. Such as (Fig. 2) The system mounts onto in the notebook computer, runs the administrative staff is running and gauging communication disposing and communication function of the electric energy meter lives. In order to guarantee the conformance of the disposition informations of the above-mentioned two kinds of occupation modes, two systems can upgrade synchronously the database automatically through the network, it is confused to avoid disposing the inconsistent management that causes of information.
Through setting-up and use of this system, try to find out a set of schemes that communication carrying on the electric energy meter of the pass online disposes information.
4 system functions and technical conditions
4. A system function
Set up specialized data base system, the communication of the pass electric energy meter measuring the charge system in inserting the electric energy of the pass disposes information and manages, use this system, runs the communication that the administrative staff can search the electric energy meter of the pass fast disposes information; To the pass electric energy meter of the access system, design the communication protocol software communicating with the pass electric energy meter, the good electric energy meter to disposing, appointed erection site, the system disposes information and electric energy meter and communicates according to the communication in the database automatically, find it is normal that the communication of the electric energy meter disposes the communication function that is a correct and electric energy meter. Through this system, runs the administrative staff can dispose information and manage to the communication of the pass electric energy meter of the access system effectively, to wanting the communication of the electric energy meter of the access system to dispose and measure with the communication function effectively, guarantee it accords with the requirement for measuring the charge system of electric energy of the pass with the communication function that the communication of electric energy meter running live is disposed.
4. 2 technical conditions
A system adopts Microsoft SQL Server 2000 as the management platform of database, carries on save and management of data recording, regard Microsoft VC ++ 6.0 as the software developing platform.
B designs specialized SQL Server script required data list and visit course of application software of automatic generation,etc..
C connects and visits SQL Server database through ODBC interface.
D designs the specialized human-computer interaction interface to carry on the registration, search of data base niformation.
The designs of 5 databases
5.1 Relation between every entity in the data base system
As to a given application environment, the optimal database schema of the structure, set up database and their application system, enable it stored data effectively, meet the application demands of different users. This thesis is to adopt ERWin4.1 software concept, logic, physical model of setting up database. Name the confusion for entity, attribute,etc. that are prevented in the data model, bring the inconvenience, has especially made GMMS data model norm to design, test, maintenance of the project,etc., among them the relation between every entity is shown as rightimage 3:
5. Entity’s attribute specification of 2 passes of tables
The task of logic design of database is to transform the database conceptual model that conceptual phase produces of the database to the logical schema of the database. And every entity relationship attribute of database of a thesis is according to the database solid model and system design of the database administration. The essential attribute that the following is the pass table is designed, make according to GMMS data model norm strictly. The rightimage is a basic information table of pass table (T_GateMeterBase)
6 electric energy meters of communication protocol storehouses
To pass tables of different types which every power supply administration operates live, design the communication software of specialized ammeter, is used for imitating the main website or distant place of the electric energy terminally and communicating with the pass table. The package of software of a set of communication of protocol design of each kind of electric energy meter, the management and operation in the form of DLL, convenient expansion and maintenance management in the future.
The producer offering similar products is numerous on the market at present, this, while bringing more selectivity to user, also the one that has brought between different producer products ” Interoperability ” Question. So-called ” interoperability ” ,It includes the meaning of two respects. First, the interchange ability of the apparatus, namely the apparatuses from different manufacturers can use the similar apparatus interconversion of the same function functionally. Another apparatus interoperability, from different manufacturers the intersection of apparatus and permitted intercommunication, can understand the machine format meaning exchanged correctly, and can realize its function in the environments of different producers.
An open system should be able to meet the requirement for interoperability. The interface design of communication should follow international standard [2 ], open agreement. So the design of the communication system has consulted ISO/OSI reference model, as the foundation by low 3 layers of ISO reference model of 7 floors, adopt physical layer, sublayer of media access control and basic norm on sublayer of logical link control and user level defined of the reference model LAN-RM of the local area network [3 ], make every effort to meet open system equipment and interoperability requirement for the software.
7 system maintenance is designed
There are specialized human-computer interaction interfaces in system design, run the administrative staff can facilitate the appointed sense channel and connect the electric energy meter on the appointed passway. The software disposes the communication parameter of reading the ammeter in the database since communication automatically, load the communication protocol packet from the stipulations storehouse, communicate and read the data information that the ammeter is gathered and produced with the ammeter automatically, including: Dial plate value of electric energy, instant quantity, demand, working condition of the ammeter and load curve information,etc., and adopt the ocular GUI to integrate and reveal relevant data information, judge whether the communication function of the ammeter is normal, produce the communication of the ammeter and dispose and measure the result report with the communication function.
The communication of the pass electric energy meter stated herein is disposed and measured and will be used in the electric energy of power supply bureau of Shaanxi Province to measure the charge system with the supervising system soon. This software can raise reliability and communication efficiency of the system greatly, have higher use value and popularize application prospect. I thank every teacher for every teacher’s diligent guidance and classmates’ hospitable help loyally here, thank you.
Wang SiTong, Wang ChangRui. Gateway and electric energy of the electric market of electric wire netting of domain measure the department. The electric power network technique of the interconnected system, 1999, 23(6) : 62-65.
National standard GB8567-88 ” documenting guide of product development to the computer software ”
Qiu GongWei, Zhao XiangYuan, witch pure duckweed (Qiu Gongwei, Zhao Xiangyuan, Wu Shuping) . Real time control and many microsystems communication skill of intelligent instrument (Communication technology in realtime control and intelligent instrument mutimicrocomputer system) [M]. Beijing: The publishing house of Tsing-Hua University (Beijing: Press of Tsinghua University) ,1996.
Source: Transaction of technical college of the project of Xi’an
There is an electric energy rushing through me right now that has replaced all my usual range of extreme emotions with a strange, crackling flatness. I don’t feel anything, just a cold, highly charged state, like a great flat reservoir of energy; it still for the moment, but as soon as I tap into it, something is going to change. I have a feeling that that will be in the form of some sort of spectacular violence. The question is simply: against whom?
PI introduces the brand-new power reference design that the no-load power consumption is only 10mW
Power Integrations Company released a new design engineering report a few days ago ,Introduce the circuit design of 3 W power that a section of no-load power consumption is only 10 mW in detail. The power has such low no-load power consumption, can offer more electric energy for electronic system, and make the electronic product satisfy such as the energy-consuming product of European Union (EuP) easily Power limit of awaiting the opportune moment that the norm of designing order of environmental protection stipulates.
EuP standard keep power consumption of awaiting the opportune moment confined within 500 mW, a lot of consumption products and household electrical appliance manufacturer with environmental consciousness are seeking more low power budget - 100 mW, 50 mW or even 30 mW of awaiting the opportune moment. The no-load power consumption only awaits the opportune moment for 10 mW the power reserves sufficient margin for miscellaneous leakage circuit components such as the input filter, electric capacity and biasing the component,etc., can the function offers the required electric energy for await the opportune moment by system still at the same time. This kind of function includes it is the electrical supply of controlling the infrared report controller in the consumption amusement apparatus, supply power in order to measure the hardware by starting the electric apparatus of key set, may send and wake signals (for example up automatically, the computer sends out the signal sent out to LCD display unit) Hardware supply power.
The circuit LNK363DN based on Power Integrations introduced is designed in in DER-227, this device adopts SO-8 to capsulate, from LinkSwitch-XT to line type member of product series, IC of switch. This single channel exports the isolated 3 W power, can work under common input voltage of 85 to 265 VAC, voltage of electric current and 5 V of high output 0.6 A the most. It does not need Y electric capacity namely satisfiable EN55022B/CISPR22B limit, satisfiable European Union EuP environmental protection designs the efficiency requirements of EPS v 2.0 of the stars of order and energy at the same time.
Power Integrations products marketing manager Andrew Smith shows: “Consumers favor the green products more and more. For this reason, apparatus manufacturers are developing efficiency more high products actively, the market is turning to energy consumption fast too extremely low, products that especially it is extremely low in energy consumption to await the opportune moment. Our EcoSmartâ Technology can reduce the power consumption level under idler and light load condition by a wide margin, thus satisfy this development trend. ”
Smith then says: “The power introduced biases the component to choose the respect to consider in voltage transformer design and circuit meticulously in DER-227, and the algorithm that it adopts carries on the switch only while needing to keep exporting voltage regulation, thus contribute to realizing the extremely low power consumption. So, the power can be the mains supply immediately when energization, and the electric energy that oneself consumes is very low. ”