Design Of A Smart Meter With High-stability Current Sampling

The single phase wifi energy meter employs highly stable current sampling components, typically including low-drift resistors, precision transformers, or advanced sensor technology, enabling stable measurement performance under various current conditions.

The sampling section of the 3 phase smart energy meter not only needs to adapt to a wide current range but also must maintain consistent data acquisition under environmental fluctuations such as temperature changes or electromagnetic interference. Traditional shunt or transformer-based differential amplifier processing circuits are one of the mainstream technical approaches.

The single phase smart meter measurement chain uses a high-precision analog-to-digital converter (ADC) to convert analog current signals into digital data, providing a reliable input for subsequent microcontroller systems. This conversion architecture is widely adopted in smart metering industry standards to comply with international metrological standards and product consistency requirements.