Two-Phase Power Meter Reference Design

TWO-PHASE-POWER-METER

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With the growing consumption of energy worldwide, particularly in the residential market, utility providers need increasingly accurate and cost-effective energy metering solutions. The Kinetis® M series two-phase electricity meter reference design addresses these accuracy and cost needs by providing a high-performance analog front end combined with an embedded programmable gain amplifier to increase the accuracy of energy measurement.

框图

Two Phase Meter

Two Phase Power Meter Reference Design Block Diagram
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支持的器件

无线连接

多协议MCU

  • KW41Z: Kinetis® KW41Z-2.4 GHz双模式：BLE和802.15.4无线连接微控制器(MCU)，基于Arm® Cortex®-M0+内核

传感器

运动传感器

  • FXOS8700CQ: 数字运动传感器——3D加速度传感器（±2g/±4g/±8g）+3D磁力计

处理器和微控制器

KM系列Cortex-M0+

  • KM1x: Kinetis KM1x-50 MHz，主流精确计量微控制器，基于ARM® Cortex®-M0+内核
  • KM3x: 50–75 MHz带段式LCD的精确计量微控制器，基于Arm® Cortex®-M0+内核

Features

  • 200 A current range (CL200, TA 30A)
  • 85 to 264 V, 50/60 Hz voltage range
  • Two types of installation: Form 2S or Form 12S
  • Accuracy class: ANSI C12.20-2002 Class 0.2
  • Line frequency measurement (for precision zero-cross detection)
  • Current transformer sensing circuit implementation for each phase
  • Low-power modes including the use of built-in RTC (Li-battery backup)
  • AMI expansion header supporting 2.4 GHz 802.15.4 or HAN/NAN (with 6loWPAN IPv6) communications for AMR and remote control
  • EMC proven design (ANSI C62.41, IEC 61000-4-4)
  • Peripherals
    • 8 x 20 segment LCD, including charge pump
    • LED pulse outputs (kWh, kVARh)
    • Isolated (4 kV) RS-232 port for monitoring, parameterization and firmware upgrade (optional)
    • Infrared optical port according to ANSI C12.18-2006 (optional)

购买选项

MKM14Z128ACHH5-Image

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  • MKM14Z128ACHH5

  • Kinetis KM14: 50MHz Cortex-M0+ Metrology MCU, 128KB Flash, 16KB SRAM, 44-LGA.

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MKM33Z128ACLH5-Image

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  • MKM33Z128ACLH5

  • Kinetis KM33: 50MHz Cortex-M0+ Metrology MCU, 128KB Flash, 16KB SRAM, Segment LCD, 64-LQFP.

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