PIC18F87J72設計的單相電能檢測技術
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本文介紹了PIC18F87J72主要特性，方框圖，電能檢測PICtail? Plus子板主要特性以及子板電路圖。Microchip 公司的PIC18F87J72 是高性能MCU，采用nanoWatt技術，具有兩路24位模擬前端（AFE），LCD驅動器。每路的SINAD為-90dB，THD為-101dBc，SFDR為103dB,低漂移內部基準電壓（12 ppm/°C)，可編程數據速率到64ksps,增益高達32V/V，目標應用在電表，功率測量和監視，手提儀表和醫療監視。
PIC18F87J72目標應用：? Energy Metering
? Power Measurement and Monitoring
? Portable Instrumentation
? Medical Monitoring
圖1。PIC18F87J72（80引腳）方框圖
PIC18F87J72電能檢測PICtail? Plus子板
The PIC18F87J72 Energy Monitoring PICtail? Plus Daughter Board is a single phase energy monitor daughter board featuring the PIC18F87J72 high performance 8-bit MCU with 16/24-bit delta-sigma A/D converters. This low cost design uses a shunt for the current sensor in place of expensive current transformers. The PIC18F87J72 calculates active/reactive energy, forward/reverse energy, active/reactive/apparent power and RMS current/voltage. The Energy Monitoring PICtail Plus Daughter Board interfaces to the Explorer 16 Development Board (DM240001) where additional evaluation can be performed. Through the Explorer 16 Development Board, wired and wireless network connections can be made through other PICtail Daughter boards such as the Ethernet PICtail (AC164123) and the WiFi PICtail (AC164136-4).
This Kit Contains:
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