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【Product Function】 Hengshui IC card water meter is used to measure the flow of water in pipelines, and also features a card-swiping function. Users pay the water fee to the management department, which writes the purchased water volume onto the IC card. After the user inputs the information from the IC card into the water meter, the water meter will automatically open the valve to supply water. During the user's water usage, the microcomputer in the water meter will automatically deduct the remaining amount. Once the purchased water volume is exhausted, the water meter will automatically close the valve to stop the water supply. The user must purchase water again and swipe the card to open the valve for water supply. The economical housing water meter runs slower, and new discount information for economical housing water meters will be announced.
Hengshui IC card water meter product features and performance:
1. Ultra-low power consumption: Uses a dedicated imported microprocessor (MSP430 series produced by Texas Instruments, USA), with an ultra-low power consumption design.
Introduction to MSP430 microcontroller: The MSP430 series microcontroller is a 16-bit ultra-low power mixed signal processor (Mixed Signal Processor) launched by Texas Instruments in 1996. It is called a mixed signal processor because it integrates multiple different functional analog circuits, digital circuit modules, and microprocessors onto one chip to provide a "single-chip" solution. This series of microcontrollers is widely used in portable instruments and devices that require battery power.
Features of MSP430 microcontroller:
1. Strong processing capability
The MSP430 series microcontroller is a 16-bit microcontroller that uses a reduced instruction set (RISC) architecture, featuring a rich set of addressing modes (7 types of source operand addressing, 4 types of destination operand addressing), concise 27 core instructions, and a large number of analog instructions; Numerous registers and on-chip data memory can participate in various calculations; and it has efficient table lookup processing instructions. These features ensure the programming of high-efficiency source programs. The economical housing water meter runs slower, and new discount information for economical housing water meters will be announced.
2. Fast computation speed
The MSP430 series microcontroller can achieve a 40ns instruction cycle under the drive of a 25MHz crystal. With a 16-bit data width, 40ns instruction cycle, and multifunctional hardware multiplier (capable of performing multiply-accumulate operations) working together, it can implement certain algorithms for digital signal processing (such as FFT, etc.).
3. Ultra-low power consumption
The reason the MSP430 microcontroller has ultra-low power consumption is due to its unique approach in reducing the supply voltage of the chip and having a flexible and controllable operating clock.
First, the MSP430 series microcontroller operates at a power supply voltage of 1.8-3.6V. Therefore, when operating at a 1MHz clock condition, the chip's current is as low as around 165μA, and the low power consumption in RAM retention mode is only 0.1μA.
