Non-magnetic induction type water meter and testing method

Abstract

The invention relates to the technical field of water meters and discloses a non-magnetic induction type water meter and a testing method. The water meter includes a shell of which the middle protrudes towards the upper side and the lower side. A water inlet and a water outlet are formed in the two ends of the shell respectively. A device cavity is formed in the upper portion of the shell, a fixing shaft is fixedly arranged at the bottom of the device cavity, the lower end of the fixing shaft is rotationally connected with a fan-shaped disc, the lower end of the fan-shaped disc is fixedly connected with a metal sheet, and an induction coil is fixedly arranged at the position, above a pointer of the metal sheet, of the bottom of the device cavity. According to the invention, the fan-shapeddisc is divided into more than two pairs of fan-shaped steel sheets; therefore, a multi-bit code for reflecting the rotating position of the fan-shaped metal sheet pointer is formed; due to the factthat the codes are refined, it means that the rotating positions of the fan-shaped metal sheet pointers which can be detected are more refined, one display digit on the character wheel corresponding to the multiple codes can be used, and the liquid flow backflow situation and the carry situation can be accurately determined according to the coding sequence.

Description

technical field [0001] The invention relates to the technical field of water meters, in particular to a non-magnetic induction water meter and a testing method. Background technique [0002] The main metering device of the magnetic induction water meter in the prior art includes a fan-shaped metal sheet pointer rotating with the liquid flow, an induction coil, and a gear set rotating with the fan-shaped sheet metal pointer. When the liquid flows through the water meter, the fan-shaped metal pointer is driven to rotate, and the gear is driven by the fan-shaped metal pointer to rotate. By setting the torque conversion device between the fan-shaped metal pointer and the gear set, the gear reflects real-time flow. As for the electronic metering part, the magnetic field sensing device detects the rotation position of the fan-shaped metal sheet pointer, and encodes the electrical signal formed by the induction to reflect the flow of the liquid, and then calculates the volume of t...

AI Technical Summary

Problems solved by technology

[0003] There are only two fan-shaped steel sheets on the fan-shaped metal sheet pointer that rotates with the liquid flow, and the magnetic induction signal can only be converted into 0 yards and 1 yards, and the rotation position codes formed by it are few, which corresponds to the accurate reading of the character wheel. The accuracy is poor and the error is large. When there is a backflow situation, it is not easy to judge the actual situation through the encoded data; when there is a digital carry situation, due to the above-mentioned problem of less coding, it is difficult to judge whether it should be carried or has been carried through the code.

At the same time, because the installation height of the induction coil cannot be adjusted according to the actual situation, the pulse signal received by the induction coil on the fan-shaped disk is lost.

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