The reference design is a single-phase anti-tampering energy meter that figures out the line frequency, power factor, RMS current, RMS voltage, active and reactive energy, active, reactive, and apparent power, as well as active and reactive power. When there is 220V attached to the line connection, the meter will turn on.
The total accumulated energy will be displayed on the LCD screen.
It is a single-phase meter that is completely functional and has additional features like battery backup, RTC, and anti-tamper features. By watching and comparing both currents, the tamper situation is first discovered (neutral and high-voltage line). The external 16-bit two-channel ADC is coupled to two current measurement channels.
While channel 1 gauges the output voltage of the current transformer, channel 0 gauges the voltage on the shunt.
RMS currents measured concurrently on the two current channels and their difference. On the voltage channel as well as the current channel, anti-aliasing low-pass filters are used. To measure the current, the system utilized a current transformer and a shunt resistor.
The Global Single-Phase Anti-Tamper Energy Meter market accounted for $XX Billion in 2021 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2022 to 2030.
A fully working single-phase meter with improved features including battery backup, RTC, and anti-tamper features by “EE online” is the MCP3911 with PIC18F85K90 Single-Phase Anti-Tamper Energy Meter.
The MCP3911 device is used to measure the voltage channel, and the 12-bit SAR ADC included inside the microcontroller is used to measure the two current channels. Two sensor current transformers and a shunt are used in this system to measure the current.
The PIC18F85K90 microcontroller provides an isolated USB connection for meter calibration and access to the device power calculations. It drives the LCD directly and communicates with the MCP2200 through UART.
The system computes the line frequency, power factor, RMS current, RMS voltage, active and reactive energy, active, reactive, and apparent power. System calibration and monitoring are done with the help of the Microchip Energy Meter Software.
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