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Address: No.9 Luxing Avenue, Luxing Industrial Park, Guangshui City, Hubei Province
DC voltage collection box
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DC sampling refers to the continuous change of the analog quantity through the transmitter into a linear relationship with the measured DC voltage signal, and then sent to the measurement and control unit, the measurement and control unit to sample the DC quantity. DC sampling does not require high conversion rate of A/D converter, and the software algorithm is simple. As long as the sampling results are multiplied by the corresponding scale coefficient, the effective values of current and voltage can be obtained, so the sampling procedure is simple and the reliability of the software is good.
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DC sampling refers to the continuous change of the analog quantity through the transmitter into a linear relationship with the measured DC voltage signal, and then sent to the measurement and control unit, the measurement and control unit to sample the DC quantity. DC sampling does not require high conversion rate of A/D converter, and the software algorithm is simple. As long as the sampling results are multiplied by the corresponding scale coefficient, the effective values of current and voltage can be obtained, so the sampling procedure is simple and the reliability of the software is good.
DC sampling is characterized:
(1) DC sampling does not require high conversion rate of A/D converter, and the software algorithm is simple. As long as the sampling results are multiplied by the corresponding scale coefficient, the effective value of current and voltage can be obtained, so the sampling procedure is simple and the reliability of the software is good.
(2) DC sampling is converted into a DC signal through rectification and filtering, so it has strong anti-interference ability.
(3) DC sampling input circuit, often using R-C filter circuit, its time constant is large (generally tens of milliseconds to hundreds of milliseconds), so the sampling real-time difference, and can not reflect the measured analog waveform, especially not suitable for micro protection and fault recording
(4) DC sampling requires a transmitter, which increases equipment investment and floor space
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