Block chain multistage control load intelligent analysis module
A technology of intelligent analysis and block chain, applied in the field of block chain, can solve problems affecting system potential, system incompleteness, manpower, material resources, time waste, etc., to improve credibility and security, data credibility, and improve accuracy Effect
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Embodiment 2
[0046] Embodiment 2, on the basis of Embodiment 1, the core of the metering module is the AD7755 chip, which is an ASIC specially used for power testing and electric energy measurement, and is one of the core chips of the current electronic watt-hour meter. The power measurement part includes AD7755, shunt, voltage divider current, basic voltage source, protection circuit diagram, optocoupler output circuit.
[0047] The internal structure of the AD7755 is as image 3 As shown, the chip integrates a frequency converter (D / F), a gain fixed amplifier, a high-pass filter (HPF), a voltage monitor and an internal reference source of 2.5V, and a 16-bit second-order analog-to-digital converter (ADC) , low-pass filter (LPF), gain-selectable amplifier (PGA), digital multiplier, accompanying correction circuit, and voltage divider circuit to sample the current and voltage signals respectively; after the signals of the current channel and voltage channel are amplified by the amplifier, t...
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