Single Phase Analog Power Meter

Single Phase Analog Power is a method of measuring electrical currents and voltages. The process is performed using 48-bit registers and a sample counter to keep track of the number of samples. The registers are then stored in a background process which notifies a foreground process to average the results. The averaging process is triggered by cycle boundaries and produces stable results. The process also allows for frequency measurements which require straight-line interpolation between zero-crossing voltage samples.

Single-phase measurement is an important step in assessing the energy usage of appliances and electrical systems. Single-phase measurement is required for many applications, including in large industrial facilities and multi-family dwellings. This type of measurement is used to accurately measure the power consumed by most appliances. The MAXQ3180 is a versatile, high-precision, multifunction analog front-end that can measure single-phase power.

This design includes a chip-scale transformer and an isolated dc-to-dc converter. These two devices communicate with each other using serial or parallel data channels. The resulting signal is sent to the MCU using the same potential as the neutral line. The two-channel ADCs communicate with each other using chip-scale transformers and optocouplers.