The Kinetis M Collection One-Section Energy Meter Reference Design from NXP is designed for the measurement and registration of lively and reactive power in single-phase two-wire networks for direct connection.
With the rising international demand for power, correct and cost-effective power metering options have develop into essential for utility suppliers, significantly within the residential market. To sort out this downside, NXP has launched a reference design for a single-phase energy meter. The Kinetis M collection one-phase energy meter reference design presents an correct, cost-effective, and feature-rich resolution for power metering in single-phase two-wire networks. Its high-performance analog entrance finish, superior performance, and strong elements guarantee exact power measurement, compliance with worldwide requirements, and environment friendly operation.
The Kinetis M Collection One-Section Energy Meter Reference Design from NXP presents a high-performance analog entrance finish (AFE) coupled with an embedded programmable achieve amplifier (PGA). This mixture considerably enhances the accuracy of power measurement whereas offering an economical shunt sensing circuit implementation and invoice of supplies (BOM). The one-phase meter reference design is particularly designed for the measurement and registration of lively and reactive power in single-phase two-wire networks for direct connection. The reference design contains a certification in line with European EN50470-1, EN50470-3 (class B and C), in addition to IEC 62053-21 and IEC 62052-11 worldwide requirements for digital meters of lively power courses 2 and 1. This ensures its compliance with the strict accuracy necessities of power metering purposes.
The reference design relies on the Kinetis KM34Z128 MCU, which options an ARM Cortex-M0+ core working at as much as 50 MHz. It presents a high-resolution analog entrance finish with 4 24-bit sigma-delta ADCs, delivering distinctive signal-to-noise ratio (SNR). The MCU contains built-in voltage references (VREF) and a programmable achieve amplifier (PGA) with low drift over temperature, guaranteeing correct and steady power measurement. The reference design additionally incorporates superior options to reinforce performance and suppleness. An built-in switched-mode energy provide (buck converter) ensures environment friendly operation of the meter electronics whereas offering ample energy for elective modules resembling non-volatile reminiscence (NVM) for knowledge logging and firmware storage. Moreover, a low-power, 3-axis Xtrinsic tilt sensor is included for digital tamper detection, permitting the meter to detect surprising adjustments in its coordinates and shield towards bodily tampering.
The reference design additionally integrates a battery which presents energy backup to the MCU in case of energy outages. This ensures steady operation and activation of the meter when required, resembling when a person button is pressed or a tamper occasion happens. The design additionally incorporates tamper switches to guard the primary and terminal covers, additional enhancing safety. Moreover, an RF communication module allows superior meter studying (AMR) and distant monitoring, facilitating environment friendly administration of power consumption. The Kinetis M Collection One-Section Energy Meter Reference Design is accompanied by complete software program help. A number of superior metering algorithms, resembling filter-based and FFT-based strategies, are supplied to facilitate correct power measurement. The design incorporates the MQX real-time working system and a complete peripheral library, simplifying improvement and integration into metering purposes.
This reference design has been examined by NXP. It comes with required design assets resembling pattern code, schematics, complete documentation, and so on. Yow will discover extra knowledge concerning the reference design on the corporate’s web site. To learn extra about this reference design click on right here.
