Acoustic Imaging Device

To implement these monitoring systems, ADCs (Analog-to-Digital Converters) are required to monitor multi-phase voltage and current. However, to meet the stringent requirements of various standards, and to measure and optimize power factor losses, these converters must be synchronized to ensure they sample all three phases (plus neutral) simultaneously.

Acoustic Imaging Device

16-bit, 8-channel, 200ksps.

The ADC simultaneously measures three-phase voltage and current along with the neutral line. By digitally processing the sampled and converted data, parameters such as active, reactive, apparent energy, and power factor can be determined, allowing for dynamic adjustment of line loads to correct the power factor. The result is improved power supply efficiency. Performing an FFT (Fast Fourier Transform) on the sampled data enables frequency and harmonic distortion metering, while also highlighting information such as the impact of system losses and spurious noise.

The figure on the right shows the overall architecture of the ADC chip.



Overall Architecture of the ADC Chip


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