Ankorya
The commercialization of electric apartments for students in higher education has become a necessity. On the basis of a discussion of the characteristics of the use of electricity in student flats in higher education schools, this paper details a management system that is well suited to the use of electricity in student flats in higher education schools - - the functionality of the system for the safe use of electricity in student flats and the prospects for its application。
Keywords: student apartment; malicious load recognition; advance payment; safe electricity; advance payment; management system
Students in higher education live in school at four o'clock, classrooms, canteens, dormitories, playgrounds, while students spend relatively much time in dormitories (including sleep). As society progresses and science develops, and people's standard of living improves, there are revolutionary changes in the use of electricity in student dormitories in higher education today. Electrical products such as computers, closed circuit televisions and electric water heaters have also entered student dormitories, and traditional electricity supply to student dormitories is no longer suitable for limited currents, time breaks and transmissions, while the cost of electricity is not properly charged from school fees on average, and the commercialization of electricity in tertiary dormitories has become mandatory。
More noteworthy is the fact that electric stoves, beddings, bed headlamps, etc., which are known as malign loads, are also brought into the dormitories, which poses a great danger to their safety。
In response to the above questions, we have developed a “safe electricity management system for student apartments”, which is well adapted to the use of higher education dormitories
I. System composition
Figure i below shows the hardware frame of the system。
1 the dfe meters in the system are centralized multi-user meters (up to 24 households) specially developed with malign load recognition。
2 the system is organized using a simple, low-cost rs-485 bus with low wiring requirements. When the system manages micro-machines (pcs) closer to the sub-area, the user power table can be connected directly to the system-managing micro-machines through rs-232,485 converters, with signal links if necessary. Dial-up communications can be made at a distance by means of a communication controller (telephone) using a telephone network。
3. System requirements for pc:
Cpu: ben tent 166 mhz or more。
Operating systems: ms-windows 98/2000/nt/xp
Memory: bottom 32mb
Hard drive: at least 30mb available space
Monitor: resolution not less than 800 x 600
Ii. System function
2. 1. Chart parameter setting
(1) a small area number (or building number) and a form number of a meter (set by the manufacturer) may be set by dial-up switches in the table。
(2) the account number (or room number) of the meter may be set by computer。
(3) the limited power (or current) of the load may be set by the computer and may be adjusted as required by the user。
(4) the start-up power of the malicious load (i. E., recognition of the start-up power of the malign load) may be set by computer, and this value may be adjusted to the user's requirements。
(5) a restricted value of a malignant load (i. E., a power factor) can be set by computer, which can be adjusted according to the user situation。
2. 2. Quantification and sales function (prepaid fees)
(1) a single-house pre-charge of the meter may be made through a computer or a sales appliance, which, after operation, replaces the original meter charge。
(2) a single-house power reduction of the meter by computer, showing the difference after operation. Owing to the frequent adjustment of student dormitories, it is generally necessary to adjust once a year, and some schools provide students with a certain amount of free electricity, both of which are being developed。
(3) single-household electricity may be sold via a computer or a sales machine, after operation to show that the amount of electricity is added to the original amount
(4) a table is sold in the form of a computer or an electric machine, after which the amount of electricity is added to the original displayed value. The above functions can be completely replaced by ic meters, which are not only more powerful than ic meters, but are also low-investment and easily managed and reliable。
2. 3 remote copying function
(1) read the account number of each household on a computer。
(2) the remaining amount of electricity per household (the chart is shown in the countdown) is read through the computer, and the actual amount of electricity used is read in the positive meters。
(3) number of power limits for computer reading of meters, start-up power for malignant loads, limit values for malignant loads and severe load over-limits for transmissions。
(4) computer reading of parameters such as current current, voltage, power and power factors for all users on the meter。
(5) a computer search of each household 's current power usage and the cause of the power outage (overload, out of electricity purchases, hyper-odious load limit)。
2. 4. Remote control and alarm functions
(1) forced to break the entire watch and deliver electricity by computer。
(2) forced single-household interruptions and transmissions through computers。
(3) zero total power through computers。
(4) overload (power) or ultra-negative load limits or power purchases are used to automatically cut power. Outages resulting from excess loads or excess load limits may be caused by an automatic break in the meter, by n times of transmission, (the number of outages and the time between them can be adjusted), or by the termination of the overload or overpower factor if the failure occurs。
2. 5. Display function of meters
The panel of the dfe energy table in this system contains 10 led digital tubes and a red lighted diode that indicates whether the meter has pulsed output, as well as a display window for an infrared diode, as shown in figure ii. Displays the following functions:
(1 ) post-electric cycle displays “month of exit”, “small area number”, “table number”
As figure iii(a)
, household number, remaining power
As shown in figure iii(b)
(a) show the month of the plant, the sub-district number, the form number (a) show the household number, the remaining charge note:
1 figure iii (a): the four above shows the year of the plant and july of the year. The lower left corner is the small area number, and the figure shows the first area. Three places in the bottom right corner display a table number, and the chart displays the number 105。
2 figure iii (b): the four above shows the number of the household, and the figure shows the fourth household. The following six digits show the remaining amount of electricity, and the figure shows the remaining amount of 13,521. 9 degrees (if positive, the table shows the actual amount used)。
3 the electricity is first shown in figure iii(a) and then in iii(b), and then in iii(a) after all users and their power rotations have been completed。
(2) pulse states: the red luminous diode scintillation in figure ii and figure iii indicates a pulsed output, i. E. The meter measurement is normal for the corresponding user。
(3) purchase tips indicate that when a household's remaining electricity is reduced to a given value (which can be adjusted), all corresponding digital tubes in figure iii (b) will produce scintillation, reminding users to purchase electricity。
(4) electricity currents, voltage, power, malignant load values, displays of electrical outages and their cause queries: the above parameters are described earlier in the article as being readable through remote microns. The above parameters can also be shown in the windows on the live meter using a dedicated "field debugging device" using a keyboard operation (which is mainly used for the field screen)。
Iii. Ankorre accommodation prepaid system
3. 1 system structure
Acrelcloud-3100 consolidates the needs of higher education institutions by adding functions required for the management of electrical energy in dormitories to the prepaid rates and by addressing the management of electrical energy in dormitories。
3. 2 system functions
The acrelcloud-3100 student dormitories prepaid cloud platform is a cloud platform that is accompanied by an adm130 (in and out) or an adf300l (multi-route metering box) prepaid power table. It is an integrated system consisting mainly of electrically managed websites and centralized copying software, including servers and communication managers. In this special application, special needs such as electrical energy monitoring, time management, malign load management, prepaid expenses management, etc. Are developed。
Batch operation: the system supports batch setting of dormitories, batch initialization, batch downput basic electricity, batch setting negative control, batch setting time control, etc., to facilitate integrated school management。
Malignant load automatic recognition control: automatic recognition control over non-allowed heat-producing appliances (e. G., stoves, hot heat, electro-heat cups, etc.) was observed when the heat-producing appliances were automatically out of power. The duration and number of malicious load pauses can be set through software。
(b) basic electricity: a free monthly allowance for supplementary electricity may be set aside for students, which is not cumulatively covered。
Time control function: support eight time periods for power supply and power outage in dormitories to facilitate the management of student accommodation。
Telemarketing: operators can charge their dormitories to the backstage, and students can charge self-help by studying a cartoon and a school twitter public。
Remote centralized copying form: the copying information is uploaded to the cloud platform via the gateway in real time, quickly and without manual copying。
Remote control: a series of remote control operations, such as a remote zipping or power preservation operation, can be performed on any single meter to facilitate management。
One ton payment: the system supports an intermediate library, interfaces, etc., to connect a school to a cartoon to facilitate the self-purchase of electricity by students。
One enters and three exits: adm130 supports the three-way output, with separate circuits divided into gates, malignant loads, time control, etc。
3. 3 system equipment selection
Concluding remarks
“electro-security management systems for student flats” are specially designed and developed for the current high school dust apartments and their immediate security concerns. More than 600 higher education institutions have now been registered throughout the country, the expansion of higher education institutions and the establishment of new school districts are still under way, and the market for the “equal security management system for student flats” is promising, especially for the upgrading of the old building's electricity supply system, with little change in its original layout, low investment and greater market prospects. In addition, the system can be used for electricity management in the related single dormitories。
