Multipath alternating current split-phase synchronous sampling method and circuit
A synchronous sampling and circuit technology, applied in the direction of measuring electricity, measuring electrical variables, instruments, etc., can solve the problems of phase difference, AC volume acquisition deviation, etc., achieve the effect of improving data accuracy, sampling signal stability, and saving hardware resources
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[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0025] Such as figure 1 As shown, the multi-channel AC phase-separated synchronous sampling circuit includes multiple multi-channel analog switches, and the three phases A, B, and C of the AC analog quantity are respectively connected to a multi-channel analog switch, and each multi-channel analog switch is connected to One input channel of the high-speed synchronous sampling AD converter, the output terminal of the high-speed synchronous sampling AD converter is connected to the MCU processor. The MCU processor uses the FSMC bus interface to control AD conversion and read the conversion results. The MCU processor controls the synchronous switching of each multi-channel analog switch to ensure synchronous sampling of the AC traffic of each phase.
[0026] figure 2 It is a circuit implementation method of this scheme. The multi-channel analog switch...
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