One-card and multi-meter multi-mode charging radio frequency card prepaid intelligent water meter and charging method
A smart water meter, multi-mode technology, applied in coin-operated equipment for distributing discrete items, coin-operated equipment for rental items, coin-free or similar appliances, etc. Problems such as normal work, to achieve the effect of fast reading and writing speed, reducing management difficulty, and large memory space
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[0047] Such as figure 1 , figure 2 As shown, a multi-mode charging radio frequency card prepaid smart water meter with one card and multiple meters includes a valve drive circuit, a power management circuit, a display module, a read-write card module, a memory, and a microprocessor: the read-write card module is used for reading card; the microprocessor includes a configuration module, a card information collection module, a total water consumption calculation module, a valve status monitoring module, a power supply judgment module, a flow collection module and a ladder billing module; the configuration module is used to configure the alarm amount to the ladder billing module And the charging ladder; the card information acquisition module is used to read and write the recharge amount from the card reading and writing module; the total water consumption calculation module is used to calculate the total consumption according to the pulse signal sent by the flow sensor, and sen...
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