Application of Stepped Smart IC Card Water Meter in Water Supply Business

With the continuous progress of human society, the accelerating process of industrialization, and the rapid development of urban construction, these have brought unprecedented power to urban water supply and water management. Therefore, the effective and rational development and utilization of freshwater resources has become an important issue worldwide, and most cities in China are facing a serious lack of water resources. Many regions are faced with difficulty in collection and payment of water fees, and people are self-contained about the use of water resources for compensation. Not high, water disputes El tends to seriously affect the development of industry construction. In order to ease the contradiction of water supply, scientifically, accurately, and safely control water use and achieve standardized and automated management, the researchers successfully developed the Ic card prepayment intelligent water meter and water sales management system. The product is novel, accurate in measurement control, simple in operation, and easy to install. It is suitable for all types of water meters currently used in China and is an ideal product for automatic management of pipeline water.

1 The composition of a smart IC card The smart IC card water meter consists of five parts: an automatic controller, a smart IC card, a mechatronic control valve, a water meter, and a water sales management system. The water metering automatic controller (abbreviation) is the core component of the smart water meter. It is composed of a set of ultra-small computer control systems in the south. The internal use of single-chip computer technology, sensing technology, automatic control technology and traditional water meter combination, water The use of accurate metering control, the controller chip line design, circuit design, with identification, anti-theft, LCD display, hour hand control, sound and light tips and other functions, engage in strong interference, high reliability, measurement accurate.

The IC used in the smart IC card water meter is currently an internationally-available IC card data storage device. It can not only write pre-ordered water data freely, but also implements anti-counterfeiting encryption and self-correction processing. The whole card is exquisite and easy to use.

The electromechanical integration water control valve is an important execution part of the intelligent water meter. It receives the instructions issued by the controller and can accurately and timely perform the action of the switch valve to achieve the purpose of opening and cutting off the water source. The valve is compact in design, compact and simple in internal structure, small and exquisite in appearance, beautiful in appearance, and easy to install.

The water sales management system is composed of computers and supporting equipment. With the support of special software, sales and system management can be carried out. Users can create water-purchasing records, analyze sales situation, print sales vouchers, and daily, monthly, and annual statistical reports, etc., and analyze the user's water use situation, and find out where the problems are. The system has the function of preventing internal cheating and anti-counterfeiting cards. The operator's card-writing operation is automatically prevented from deletion, and the imitation pseudo-card and controller's non-normal use markings can be identified. The system man-machine dialogue interface is well-designed, operation is concise and easy to learn, business service is of good quality and high efficiency.

2 Technical performance 2.1 Accuracy grade: The measurement characteristic accords with the rotor type water gauge GB/778-96 standard.
2.2 When the overload flow, the pressure loss of the water meter is less than 0.1MPa
2.3 The indication error of the water meter is from the minimum flow rate to the low zone ±5% of the demarcation flow.
From ±2% including demarcation flow to high zone including overload traffic:
2.4 The data retention period in the IC card is greater than 50 years and the number of uses is greater than 10,000:
2.5 Electrical parameters: Built-in power supply voltage 3.6VDC, maximum current less than 50mA, T for current less than 5mA, quiescent current less than 50uA.

3 Main functions 3.1 Prepaid functions: After using the Ic card to input the water fee, the water meter automatically opens the valve?
3.2 Automatic billing: Reasonable billing according to the corresponding price for each month's amount of water consumption, users can view at any time.
3.3 Prompt function: When the remaining water fee is less than 20 yuan, the water meter will automatically close the valve to remind the user to recharge in time. At this time, the user can open the valve through his own card.
3.4 One-for-one card: The exchange uses fake cards to discuss the whole process of fuzzy control of the water sale system.
3.5 Low voltage protection function, when the battery voltage is less than 3.1V, the liquid crystal display CIOSE indicates low voltage, when the voltage is lower than 29V, the valve is automatically closed.
3.6 When using a dummy card, the water meter automatically recognizes the parent ERROR.
3.7 The status of water consumption shows that after inserting the user card, the water consumption of the month, the water consumption of the previous month, the remaining amount, the water fee of the current month, the water fee of the previous month, the amount of water purchased, the date, time, and good are displayed in order.

4 How to use 4.1 Please read the operating instructions carefully before use.
4.2 Please rotate the water meter cock counter-clockwise and trap the water-capable IC card in the jack of your own water meter.
4.3 Water Meter Display OPEN Open the valve, and then display the current month's water consumption, the previous month's water consumption, the remaining amount, this month's water fee, and the previous month's water fee. The amount, date, time, and good of the purchase of water indicate that the water fee is correct. enter.
4.4 If it is a fake card, Error is displayed.
4.5 Please remove the Ic card in time after use, otherwise there will be power consumption.
4.6 After completion, do not forget to tighten the water meter cock to prevent water and damp air from entering the electrical box.
4.7 Each user must purchase the user card to view the information before the purchase, and display the good before recharging.

5 Cautions 5.1 Before installation, the sand, hemp, and other debris left in the pipeline should be cleaned.
5.2 Installation position Avoid explosion, flooding, freezing and pollution. The ambient temperature is above 0°C and the relative temperature does not exceed 93%.
5.3 The use of water temperature 0 ~ +40 °C.
5.4 water pressure does not exceed 1Mpa

6 Development Prospects In China, due to its vast territory and large population, the development of various regions is uneven. On the whole, most users in China still use traditional metering devices with low management efficiency and relatively backward technology, and only try remote metering in the economically developed metropolitan residential communities. For many small and medium-sized cities and districts and counties in China, due to the incomplete infrastructure of their computers and information technology, the application of pre-paid water meter cards is more practical in a relatively long period of time. For large and medium-sized cities with more advanced economies, their computer and information technology bases are relatively good, and people have a relatively strong awareness of water resources protection and consciously paying fees, and have put forward high-quality requirements for the consumption of water resources. However, from a global perspective, the application of domestic smart water meters is still in its infancy. With the country’s full attention to energy and environmental protection, the water business has been greatly developed in recent years. At present, there are about 20 million users of water pipelines, and In the year-by-year increase, under such a situation, the promotion and application of smart water meters and changes in the management model will inevitably bring about huge social and economic benefits.