Detection device with quantifiable detection distance for metal rotary water meter

Abstract

The invention discloses a detection device with a quantifiable detection distance for a metal rotary water meter, and solves the problems mentioned in the background technology. In order to achieve the purpose, the invention provides the following technical scheme: the detection device with the quantifiable detection distance for the metal rotary water meter comprises a partially metallized disc,a metal sector, an axis and other structures; the metallized disc is of a disc structure, a metalized metal sector is arranged in the metalized disc, a circular concentric hole is formed in the centerof the metalized disc in a matched mode to form an axis, the interior of each exciting coil is divided into four fan-shaped areas, an induction coil is placed in each fan-shaped area, a wiring port in one end of each induction coil is electrically connected together, and the other end of each induction coil is electrically connected to a signal amplifying circuit and a measuring device. The detection device has the beneficial effect that the distance from a metal sheet to a PCB can be quantified.

Description

technical field [0001] The invention belongs to the technical field of instruments, and in particular relates to a detection device for a metal rotary water meter with a quantifiable detection distance. Background technique [0002] At present, in the measurement of rotary water and gas meters, the flow of liquid or gas drives the rotation of mechanical rotating parts. The commonly used detection principle is to drive the rotation of the measuring element through the propeller in the water meter, and then convert the rotation signal of the measuring element into Electrical signals were recorded and quantified by the device. [0003] In the existing technical scheme: the invention patent of the inductive angle sensor with the patent number ZL200680007522.8, the metal sheet is used as the measuring element, and the PCB coil is used as the detection circuit; the symmetrical coil pair is output to the comparator, and the metal sheet cannot be quantified. The distance of the PCB...

AI Technical Summary

Problems solved by technology

[0003] In the existing technical scheme: the invention patent of the inductive angle sensor with the patent number ZL200680007522.8, the metal sheet is used as the measuring element, and the PCB coil is used as the detection circuit; the symmetrical coil pair is output to the comparator, and the metal sheet cannot be quantified. The distance of the PCB circuit board, the measurement distance is not far enough, the measurement speed is not fast enough, and the algorithm cannot be used to correct it when it is disturbed; because the distance from the metal sheet to the PCB circuit board cannot be quantified, it may be at a critical position when it leaves the factory, and it may exceed the limit due to environmental changes in the future. The detection distance cannot guarantee the stability of long-term operation

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