The BLE power meter solution from Nuvoton

To achieve high accuracy in energy measurement along with outstanding Bluetooth Low Energy connectivity, the BLE power meter solution from Nuvoton is an indispensable choice.

The BLE power meter includes the NuMicro® M251 microcontroller and the NADC24 analog-to-digital converter. The NADC24 is a high-precision 24-bit Delta-Sigma ADC, specifically designed for capturing voltage or current signals.

The M251 microcontroller is responsible for reading and calculating data, displaying real-time voltage, current, and power information through the user interface (UI). Additionally, data can be transmitted to mobile devices for display via the BLE module.

EPI Vietnam Technologies is proud to be the authorized distributor of Nuvoton in the Vietnamese market, partnering with Nuvoton to provide advanced technological solutions with the following specific features:

Features:

– Line frequency

– RMS voltage

– RMS current

– Apparent power

– Active power

– Reactive power

– Power factor

Technical Specifications:

NADC24 (ADC ΔΣ 24 bit):

– PGA Gain: 1 to 128

– Data Rate: 1.25 SPS to 96kSPS

– Data Rate 10 SPS with 22-bit ENOB

– 4 External Differential Channels or 8 External Single Channels

– Internal Reference Voltage Generator (1.2V /2.4V)

– Internal Temperature Sensor: ±2℃

– Low Power Consumption: 1.38 mA

– SPI Compatible Interface

– Driver up to 10cm x 10cm Panel

Advantages:

– Using NADC24 chip – 24-bit Delta Sigma ADC with high precision

– BLE wireless connection, convenient “smart meter” reading

– Integrated design, neat, saving production costs

Learn more: NADC24

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Block diagram

Contact EPI Vietnam Technologies Design solution

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