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Subject: Re: electronic power meter
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Date: 08/13/02 at 6:37 PM
Posted by: amarie g
In Reply to: Re: electronic power meter posted by Russ Kincaid on 08/13/02 at 5:32 PM:
the meter is fully digital and measures true power. it uses the ADE7756 energy metering ic. the ADE7756 is designed to interface to a microcontroller through a serial interface (SPI) and provides measurement for the system. the SPI port allows the user to calibrate various components of the meter, including gain, offset, and phase errors. the purpose of the microcontroller is to send display data to the LCD and control the various functions of the meter. various calibration parameters meter's data during power-down are sored in the EEPROM of the MCU. the entire meter is calibrated through an external calibration routine by a PC through an external SPI interface.
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