【 Weak current College 】 stepped intelligent IC card meter in water supply

With the continuous improvement of human society, accelerating the process of industrialization and urban construction fast development, which was urban water supply and water management will bring about unprecedented when force. So effective, freshwater resources development has become an important subject of worldwide, most cities in the country is facing a serious shortage of water resources in many regions facing water collection difficult, people paid use of water resources of the self was not high, water disputes El exacerbating the impact of the development of the construction industry. To mitigate water supply contradictions, scientific, accurate and secure way to control water, implement standardization, automation, management, so the researchers successfully developed Ic card prepaid smart meter and sale water management system. The novel, the precise measurement and control, easy operation, easy installation, suitable for all kinds of domestic water meters in use today, is the pipeline water automation of management of the ideal product.

1 the composition of the intelligent IC card

Intelligent IC card meter by automatic controllers, intelligent IC card, mechatronic control valve, water meters and water sales management system consists of five parts. Water metering automatic controller (short name) is a core part of intelligent water meter, it was a mini computer control systems, internal use of single-chip computer technology, sensor technology, automatic control technology and traditional water meters, water consumption for precise measurement and control, Office of the controller chip, circuit design line design novel, have read pseudo, stealing, LCD display, clock control, sound and light tips and many other features, get interference ability, high reliability, accurate measurement.

Intelligent IC card meter using the Ic is now universal IC card data memory, not only can write out prepaid water data, but also for the security encryption and self-correction. The entire card exquisite appearance, users use is extremely convenient.

Mechatronics water control valve is important to perform intelligent water meter components, it receives the directives issued by the controller, you can accurately and timely implementation of on-off valve action, achieve open, cut off the water. This valve design sophistication, the internal structure is compact, simple, compact size, elegant appearance, the person households easy installation.

Water sales management system consists of a computer and supporting equipment, in support of a dedicated software, sales operations and systems management. You can set up users to buy water archives, analyze sales situation, print sales voucher and day, month, year statistics reports, etc., and users of water for analysis, identifying key check. The system has eliminated internal fraud and forgery-proof card functions, operator and write card operation with auto anti censorship, recognizable imitation pseudo card and controller non-normal use, etc. System for man-machine conversation interface design perfection, the operation simple and easy to learn, business service quality and high efficiency.

2 technical performance

2.1 precision grade: rotary wing measuring characteristics consistent with water meter GB/778-96 standard. (See table 1)
2.2 overload flow, pressure loss is less than a meter 0.1MPa
2.3 meter indication error
From minimum flow to not include the flow of low area boundaries of ± 5%;
Flow from including boundaries to include the overload flowrate higher area ± 2% of:
The card data save 2.4IC period greater than 50 years, the usage count is greater than 10000:
2.5 electrical parameters: built-in power voltage 3.6VDC, maximum current is less than 50mA, 5mA for current less than T, quiescent current is less than 50uA.

3 main features

3.1 prepaid features: use of IC card to enter the water, the water meter automatically open valve?
3.2 automatic billing: by month and the water consumption of the corresponding affordable billing, user can always view.
3.3 hint feature: in the remaining water charges less than $ 20 meter automatically when you close the valve, remind user promptly recharge, in which case the user may, through their own card to open the valve.
3.4 one household, one card: Exchange uses to sell false card is penalized as water systems monitored.
3.5 low voltage protection function, when the battery voltage is less than 3.1V, LCD CIOSE represents low voltage, the voltage falls below to automatically close the valve 29V.
3.6 use pseudo card, automatic recognition of parents following meter ERROR.
3.7 water status display, insert the user card, then click display this month, last month, water consumption, water consumption, the remaining amount, last month, this month on water and water, this water amount purchased, date, time, good.

Use method 4

4.1 use more read before use.
4.2 please meter plug counterclockwise rotation down, there will be water for IC card collector who own meter Jack.
4.3 meter display to open the valve OPEN, and then display this month, last month, water consumption, water consumption, the remaining amount, last month, this month on water and water, this water amount purchased, date, time, good, that water has been entered correctly.
4.4 if is fake cards, display the Error.
4.5 after use please promptly remove the Ic card, otherwise there is power consumption.
After the Qing 4.6 do not forget to put a meter cock tight to prevent water and moist air into the electrical boxes.
Purchase of water each 4.7 before inserting one user card view information, display good before recharging.

5 considerations

5.1 installed before cleaning pipe left by gravel, ramie yarn and other debris.
5.2 loading location to avoid baoshai, flooded, frozen and pollution, environment temperature above O relative temperature up to 93%.
5.3 use water temperature 0 ~ + 40¡æ.
5.4 pressure not exceeding 1Mpa

6 development prospects

In China, due to the vast population, around development imbalances. Overall, domestic and most users still use management efficiency low,Technical backwardness of the traditional meter, only in the economy more developed cities residential areas in trial transmission meter. On the domestic multitudinous of small and medium-sized cities and counties, due to their computers and information technology infrastructure to improve, in a longer period, the application card prepayment meter is more practical. And on the economy more developed cities, their computers and information technology infrastructure is good, but people on the water resources protection and conscious awareness of the relatively strong payment, on the water resources of consumption patterns made of high-quality requirements. But from a global perspective, domestic intelligent water meter application is still in its infancy, as countries on energy and environment protection, adequate attention in recent years, water utilities to get a lot of development, the water pipe network of about 20 million users, and also increased year by year, in such a situation, promotion and application of intelligent water meter, change management model that will deliver significant social and economic benefits.