Smart Electricity Meter

[#1]

• Description
• Features
• Block Diagram
• Product
• Documentation
• Tools

Description

With the growing consumption of energy worldwide, particularly in the residential market, utility providers need increasingly accurate and cost-effective energy metering solutions.

The electricity meter is used for measurement and registration of active and reactive energy in single-phase, two-wire networks for direct connection.

NXP’s connectivity solutions for smart metering address the challenges smart cities face for reliable, secure communications for remote metering and home energy management.

We enable remote metering with NAN technologies like IEEE® 802.15.4 and Wireless MBUS. Additionally, NXP fosters smart energy management inside homes with HAN technologies like ZigBee®.

Features

• All measurements performed by SD ADC
• Shunt resistor measurements amplified by Programmable Gain Amplifier (PGA)
• Phase shift between phase voltage and phase current measurements compensated by phase shifter block
• Active and passive tamper detection with time stamping
• Highest-resolution AFE with 4 x 24-Bit SD ADC
• LCD controller

Block Diagram

Product

Category Name 1:	MCU
Product URL 1	Arm® Cortex®-M0+|Kinetis® KM3x 50-75 MHz 32-bit MCUs | NXP
Product Description 1	Kinetis® KM3x MCUs enable single-chip one-, two-, and three-phase electricity meters, as well as flow meters and other precision measurement applications.

Category Name 2:	Sensor
Product URL 1	±8g, Low g, Digital Accelerometer | NXP
Product Description 1	The NXP® MMA8491Q 3-axis accelerometer is an ultra-low-power tilt sensor that is ideal for smart meters.
Product URL 2	Digital Sensor - 3D Accelerometer | NXP
Product Description 2	The 14-bit accelerometer and 16-bit magnetometer are combined with a high-performance ASIC to enable an eCompass solution capable of a typical orientation resolution of 0.1° and sub-5° compass heading accuracy for most applications.

Category Name 3:	Secure
Product URL 1	A71CH | Plug and Trust for IoT | NXP
Product Description 1	A71CH is a ready-to-use secure element for IoT devices providing a root of trust at the IC level and delivers, chip-to-cloud security right out of the box, so you can safely connect to IoT clouds and services, including AWS, IBM Watson IoT™ Platform, and Google Cloud™ IoT Core without writing security code or exposing keys.

Category Name 4:	Zigbee
Product URL 1	Zigbee and IEEE 802.15.4 wireless microcontroller with 512 kB Flash, 32 kB RAM | NXP
Product Description 1	The JN5169 is an ultra-low-power, high-performance wireless MCU suitable for ZigBee applications.

Category Name 5:	NFC
Product URL 1	PN5180 | Full NFC Forum-compliant frontend IC | NXP
Product Description 1	The PN5180 is a high-performance full NFC Forum-compliant frontend IC for various contactless communication methods and protocols.

Category Name 6:	Power management
Product URL 1	TEA172x | NXP
Product Description 1	These highly integrated devices enable low no-load power consumption below 10 mW, reduce component count for a cost-effective application design, and provide advanced control modes that deliver exceptional efficiency.

Documentation

Filter-Based Algorithm for metering applications:  https://www.nxp.com/docs/en/application-note/AN4265.pdf

Tools

Product	Link
TWR-KM34Z75M: Kinetis M Series Tower System Module	TWR-KM34Z75M|Tower System Board|Kinetis MCUs | NXP
Single-Phase Metering	Single Phase Meter | NXP
Two Phase Power Meter Reference Design	Two Phase Power Meter Reference Design | NXP
Three-Phase Power Meter Reference Design	Three Phase Power Meter | NXP

[acosara]

Is the three phase power meter reference design available to buy/borrow anywhere? None of these reference designs seem to be available. Is the source code for the three phase meter available somewhere? There's only an executable in the design resources section.