IC card, RF card smart water meter

IC card, RF card smart water meter

IC card and RF card smart water meters (also known as IC card water meters, magnetic card water meters, and electronic water meters) can be divided into contact smart water meters and non-contact smart water meters. Non contact smart water meters, commonly known as RF card water meters, card swiping water meters, and card swiping water meters, are widely used in households, apartments, commercial buildings, and other places where tap water and hot water are charged per household.



Automatic charging: prepaid mode, postpaid mode
Prepaid mode, which means buying water first and then using it: the initial available water volume of the water meter is zero, and the valve is closed. After opening an account and purchasing water at the water sales point, users can receive an RF card water meter and an RF card water meter household card. Place the card in the sensing area of the corresponding water meter, and the water meter will read the available water volume in the card, then open the valve to supply water normally. After the available water in the water meter is used up, the valve is closed, and the user holds the card to purchase water at the water selling point. Then, the recharged user card is placed in the sensing area of the water meter, and the first process is repeated.

Post payment mode, which means using water first and paying later: the initial available water volume of the water meter is zero, and the valve status is closed. The management department sets the allowed water usage for users and pre charges it to the user's card when opening an account. The user places the user card in the sensing area of the corresponding water meter, the water meter reads the available water volume, and then opens the valve to supply water normally. After the available water in the water meter is used up, the valve is closed and the user can use their card to pay at the water sales point. Then the water selling point recharges the user's card, repeating the first process.

Automatically implement tiered water pricing
The water meter is equipped with a clock and can store water usage for 12 months. When the user card is placed in the sensing area of the water meter, the water meter will write the monthly water consumption into the user card. Every time the user purchases water, the system will automatically read the monthly water consumption from the user card and calculate the additional water fee based on the tiered water price, which will be paid when the user purchases water.

Card replacement, recycling and transfer function
The user card can only successfully transact with the corresponding water meter once for each water purchase. If the card is lost, it can be replenished according to the software database management function, and the water volume will not be lost or duplicated.
When the water meter needs to be replaced, use the recycling transfer card to read out the data in the meter, embed the new meter, and the old meter information enters the new meter.

Mechanical and electronic display modes
The IC card water meter retains the character wheel and pointer display of the mechanical water meter, while adding a liquid crystal display. Even if there is a malfunction in the electronic part, the accumulated water consumption can be read based on the display of the mechanical character wheel.

2、 Product advantages

·Immersion sealed, capable of working in damp or underwater environments;
·Adopting RF card technology for convenient user operation;
·Pilot valve, unaffected by scale and water pressure, more stable,
Generally, IC card water meters use ball valves, and valve switches are easily affected by scale and water pressure. The ball valve body and outer wall will produce scale when immersed in water for a long time, which increases the frictional resistance and affects the on-off valve; When the water pressure increases, the resistance of the ball valve will also increase exponentially, which will have a significant impact on the opening and closing of the valve;
The bottle stopper type working principle of the pilot valve is not affected by scale and water pressure;
The pilot controlled valve using a combination of magnetic and hydraulic technology has low power consumption and stable opening and closing under low pressure.
·The base meter, valves, etc. are equipped with magnetic transmission and special isolation sealing design, which solves the problem of dynamic sealing and water leakage of ordinary IC card water meters.
The ball of a ball valve is directly connected to the motor and is usually sealed with a rubber ring. Over time, it is prone to aging and deformation, resulting in water leakage; The base meter and valve of Longkang IC card water meter are both magnetically driven, and the isolation layer is reinforced and sealed with a copper shell, with a pressure resistance of up to 35 kilograms and no water leakage;

Anti attack design
Anti magnetic and anti vibration
When a magnetic object approaches the water meter, the water meter will automatically close the valve to avoid interference with the measurement of the water meter by the magnetic object;
The vibration of water pipes may cause the water meter to rotate, resulting in incorrect measurement. The Longkang IC card water meter can eliminate the erroneous measurement caused by water pipe vibration.

Protection function
·Battery undervoltage protection function: When the battery voltage is too low, it will prompt and record, and can be returned to the management system through the user card for corresponding processing; Simultaneously, control the opening and closing of the valve based on the remaining battery capacity.
·Magnetic interference protection function: When the water meter is subjected to external magnetic interference or damage to the water meter's communication line, the valve can be closed to prevent users from illegally interfering with the operation of the water meter and continuing to use water without measuring through the water meter; After the external attack is withdrawn, embedding the user card can restore normal operation.
·Battery activation function: To avoid the lag effect of lithium batteries, automatic discharge operation is provided at the beginning of each month.

Card replacement function
When a user accidentally loses their user card, a new user card can be reissued through the backend management system, and the previous water purchase record can be added to the user card. The water meter can automatically determine whether the previous water purchase record is valid.
·Clock and calendar functions: The system runs a schedule when powered on, automatically identifying leap years and months. Provide a way to set the calendar and clock for the entire water meter before leaving the factory through the parameter setting card.
·Inspection function: It can support embedding inspection cards in the water meter to read out all the data in the water meter for maintenance personnel and backend management systems to inspect and analyze.

Other functions of the product
·Measurement function: Users purchase water through their user card and place it in the radio frequency sensing area of the water meter. The purchased water is accumulated in the meter and the actual water consumption is calculated; When the user purchases water next time, the user card will automatically bring the water consumption and its status in the table to the backend management system.
·Display function: Parameters such as the current water purchase amount, remaining water amount, and cumulative water consumption can be effectively displayed on the LCD. Users can view the remaining water amount and cumulative water consumption information in the table through their user card.
·Alarm function: The water meter can provide alarm prompts through display or valve control for battery undervoltage, insufficient remaining water, valve failure, and misoperation.
·Parameter setting function: The management can set the alarm water volume, recharge limit, overdraft limit and other parameters in the water meter through user water purchase according to their actual needs.