Induction type non-magnetism remote water gauge

Abstract

The invention relates to an induction type non-magnetism remote water gauge which comprises a base gauge and a signal processing device arranged on glass on the surface of the base gauge. The signal processing device comprises a signal collecting sensing coil and a signal processing circuit. The signal collecting sensing coil comprises an outer inductance coil and four inner inductance coils distributed in the outer inductance coil according to the cross-shaped quadrants. A stainless steel sheet is arranged at the position, corresponding to the signal collecting sensing coil, of the base gaugeand is in an 8 shape. The 8-shaped stainless steel sheet rotates along with a rotating shaft of the base gauge and shields the inner inductance coils according to opposite angles so as to change themagnetic flux of the inner inductance coils. The signal processing circuit conducts continuous sampling and processing on the inner inductance coils. The water gauge does not internally contain a permanent magnet and other magnetic elements, is little affected by inner magnetic force and outer magnetic force, and is far in detection distance and precise in measurement.

Description

technical field [0001] The invention relates to a water meter, in particular to an inductive non-magnetic remote transmission water meter resistant to strong magnetic interference. Background technique [0002] In the prior art, there are two measurement methods of the remote water meter: the pulse measurement method and the photoelectric induction measurement method. The pulse counting remote water meter uses the principle of non-magnetic induction to convert the rotation of the mechanical watch gear or the rotation of the pointer into an electrical pulse signal. [0003] Chinese patent CN201020049396.6 discloses an intelligent water meter device that can resist strong magnetism, and Chinese patent CN201420357838.1 discloses a non-magnetic remote water meter with sampling separation on a large pointer; the above two water meters are all in the water meter The impeller is provided with a semicircular anti-magnetic stainless steel sheet, and the damping waveform and non-damp...

AI Technical Summary

Problems solved by technology

However, the problem brought about by this is: when there is external strong magnetic interference, it will have a great impact on the damping waveforms received by inductance one and inductance two, resulting in errors and errors in counting

[0004] Chinese patent CN107024252 discloses a non-magnetic remote water meter resistant to strong magnetic interference. In order to solve the above problems, three winding coils distributed in an equilateral triangle are used; it improves the detection accuracy and effect, but the detection distance There are restrictions, less than 6mm, making this sampling detection method unable to be directly applied on the surface glass of traditional wet water meters

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