Curve restoration anti-interference measuring device and method thereof
A measurement method and measurement device technology, which is applied in the field of flow and concentration measurement in the process of dredging medium transportation, can solve problems such as poor authenticity and real-time performance, and distortion of measurement results, and achieve the effects of easy handling, improved accuracy, and fast sampling speed
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Embodiment 1
[0032] Such as figure 2 As shown, a curve reduction anti-interference measurement device of the present invention includes an electromagnetic flowmeter, a CPU chip, a power frequency AC excitation source, a potentiometer and a filter circuit.
[0033] The electromagnetic flowmeter is used to detect the flow information in the measurement pipeline. The electromagnetic flowmeter can be realized by using the existing technology, and this embodiment does not involve the improvement of the structure of the electromagnetic flowmeter. In this embodiment, the electromagnetic flowmeter includes an excitation coil and a pair of measuring electrodes; where the two electrodes in the pair of measuring electrodes are respectively denoted as measuring electrode S and measuring electrode P; the pair of measuring electrodes runs through the measuring pipeline and is arranged in the same direction as the fluid flow.
[0034] At present, most electromagnetic flowmeters adopt low-frequency squa...
Embodiment 2
[0042] On the basis of Embodiment 1, this embodiment provides a curve reduction anti-interference measurement method based on the device described in Embodiment 1, including the following steps:
[0043] S1. The AC excitation signal output by the power frequency AC excitation source is applied to the excitation coil of the electromagnetic flowmeter to establish a continuous alternating magnetic field, and the electromotive force is measured on the measurement electrode pair of the electromagnetic flowmeter; the two electrodes in the measurement electrode pair are respectively recorded For measuring electrode S and measuring electrode P;
[0044] S2. The measuring electrode S is connected to the two ends of the potentiometer through the wire A and the wire B respectively, and the measuring electrode P is electrically connected to the adjustment terminal of the potentiometer through the wire C, wherein the measuring electrode S, the wire A and the potentiometer constitute the fir...
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