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- W2361805150 abstract "The development scheme of an instrument based on embedded system for measuring the characteristic parameters of grounding grid is discussed. To avoid the power frequency interference and realize exact measurement,it adopts AC variable-frequency method and searches the optimal measuring frequency from 30 to 70 Hz with 1 Hz step. It is composed of AC variable frequency power source,measurement processing module and 32-bit processor with embedded ARM7TDMI control core. The system software includes quasi-synchronous sampling,digital filtering and electric parameter calculation,burnt in the embedded ARM chip. The scheme makes full use of embedding technique,implementing the parameter measurement with less hardware of sensors and A / D converter. Appli-cations prove that the scheme is efficient and reliable,meeting the measurement requirements." @default.
- W2361805150 created "2016-06-24" @default.
- W2361805150 creator A5083443331 @default.
- W2361805150 date "2007-01-01" @default.
- W2361805150 modified "2023-09-24" @default.
- W2361805150 title "Measurement instrument based on embedded system for grounding grid" @default.
- W2361805150 hasPublicationYear "2007" @default.
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