Prepaid smart water meter is a new type of water meter that uses modern microelectronic technology, modern sensing technology, intelligent stored value card technology to measure water consumption and conduct water data transmission and settlement transactions, that is, install on traditional mechanical water meter. A new intelligent meter made by electronic control module and electronically controlled valve. Since the pre-paid smart meter base table mature professional development is optional water meter factory products, as well as free software, the following components technology directly determines the pre-paid smart meter and quality of life. 1. The main chip of the electronic control module: it is the core component of the data collection, processing, display and preservation of the charging base meter, and also the technical core of the prepaid water meter, showing the technical and quality level of the water meter. The quality and technology of the main chip are uneven. There are also large-scale integrated circuits based on American Ti Company. The technology is mature, powerful, and stable. This technology is in the forefront of the domestic prepaid water meter manufacturing industry. The adoption of this technology is the first to introduce a five-card product in the domestic pre-paid industry, which meets the need for multi-table installation of duplex buildings and the need for one-card operation for a multi-family housing.
2. Electric control valve: Due to the water quality of the pipe network, the damage to the water meter valve is serious, which directly affects the metering of the prepaid smart water meter. The selection of the electronic control valve must have a long service life, high switch reliability and small pressure loss. It is not easy to scale in use, and the current ceramic valve is shouxuan.
3. Working battery: The life cycle of the civil smart water meter specified by the state is six years. The power supply battery must be high in energy, low in power consumption and longer than six years, and the low-voltage self-test and protection function should be designed in the smart water meter. If the battery is under voltage, the smart water meter will automatically prompt and save the data, and the valve will be closed for a delay.
4, IC card card: CPU card capacity, stability, and security.
Prepaid smart water meter usage:
1. User account opening: After the water meter is installed, the valve has been opened when the user card is not brushed. At this time, the overdraft water quantity of the water meter is used. When the user first swipes the user card to the meter, it indicates that the meter has been opened and will be automatically Deduct the amount of water already used.
2, the user purchases water: the user puts the user card of the purchased water into the RF sensing area of ​​the water meter, the module will display as shown in Figure 1, the display "" indicates that the data is being exchanged, and then the new purchase amount is displayed.
3, reading method: When users want to check their own water conditions, put the user card into the RF sensing area of ​​the water meter to wake up the water meter. At this time, the new accumulated water consumption of your Zui is displayed on the LCD screen in turn, and the remaining water volume
4, swipe error: If the user swipe the card too fast or does not put the best position, it will display the wrong card character and then display the accumulated, remaining, new water purchase. (When this happens, users do not worry, Will not cause any loss, please re-swipe the card)
5, close the valve alarm:
(1) The remaining water is insufficient. When the remaining water volume is reduced to the alarm water volume (the alarm water volume is set by the management department), the valve will be automatically closed to remind the user to purchase water in time. At this time, the user can use his user card to swipe the card to open the valve. Water, every 1 time will automatically close the valve to remind the user to buy water. When the remaining water volume is reduced to 0, you can open the valve into the overdraft state by brushing the user card to continue the water (when the management department sets the overdraft water amount), when continue After the overdraft water volume is used, the valve will be automatically shut down and will not be opened by the user card. Only after the user refills the water to recharge, the valve can be opened to continue the water, and the used overdraft water is subtracted.
(2), battery power shortage prompt: When the water meter battery voltage is lower than the set value, the water meter valve will automatically close. At this time, the user card can be used to open the valve to continue the water. After 48 hours, if the battery is not replaced, it will be completely Close the valve, only open the valve after replacing the battery. When the battery is short of power, you should inform the management department to replace the battery in time. When the battery is short, the water meter will automatically prompt.
6, fault prompt: When the valve is faulty (such as: because the weather is too cold, the valve is frozen) or due to other reasons, the valve will be faulty, then the LCD will display a faulty prompt, it should be timely to the management department Reaction resolved.
7, user replenishment card: After the user card is lost, please go to the management department to reissue a user card.
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