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Water meter

A water meter and magnetic field technology, applied in instruments, volume measurement, liquid/fluid solid measurement, etc., can solve problems such as accurate detection failure

Inactive Publication Date: 2008-09-10
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the above-mentioned water consumption detection device, the magnetic sensor is adapted to detect the magnetic field that the magnet on the water wheel has generated, which may have a strong external magnetic field acting on it, resulting in the realization of the magnetic field of the magnet on the water wheel. Failure of accurate detection of magnetic field

Method used

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Examples

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no. 1 example

[0020] Referring to FIG. 1, description now proceeds to a water meter according to a first embodiment of the present invention. In this figure, indicated by reference numeral 100 is the main unit of the water meter, which is connected to a water pipe 110 for supplying tap water. The water pipe 110 is manufactured as a metal or resin pipe or the like, and is used for domestic service of tap water from an external line. The flow detector 120, which is a measuring element of known construction, includes: a water wheel 121 that rotates at a number of revolutions per unit time ("rpm" in this case) proportional to the flow of water flowing through the water pipe 110; and The counter 122, which counts the number of revolutions, is thus adapted to the measurement of the flow rate of tap water flowing in the water pipe 110 to prepare and output data on the flow rate as flow data. For the flow detector 120 , a water wheel 121 is installed in the water pipe 110 so as to rotate at an rpm...

no. 2 example

[0035] Referring to Fig. 3, description now proceeds to a water meter according to a second embodiment of the present invention. In this figure, a water meter unit 100 is connected to a water pipe 110 for supplying tap water. The water pipe 110 is manufactured as a metal or resin pipe or the like, and is used for domestic service of tap water from an external line. The flow detector 120 as a measuring element includes: a water wheel 121, which rotates with the number of revolutions per unit time which is proportional to the flow rate; Measurement of flow to prepare and output data about flow as flow data. The water wheel 121 is installed in the water pipe 110 so as to rotate at an rpm proportional to the flow of water in the water pipe 110 . The water wheel 121 is provided with a magnet 123 that rotates with the rotation of the water wheel 121 . The rotation of the magnet 123 is detected by the rotation number detection magnetic sensor 124 . This magnetic sensor 124 provid...

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Abstract

The invention relates to a water meter (100) which includes a flow detector (120) of a magnetism sensor (123) for detecting rpm of a water wheel (12) in proportion to flow, and an magnetism sensor (160) for detecting magnetism field acting from outside, wherein, a pre-estimate flow is displayed as a metered flow through detection to outside magnetism field of the magnetism sensor, and is used as a precautionary measure for outside magnetism field that avoid abuse water to save water fee.

Description

technical field [0001] The present invention relates to a water meter for measuring the amount of water consumed in a system or the like to be measured. Background technique [0002] For use in the measurement of water consumption in general households or offices, such a water meter has become common, as disclosed in Fig. 1 on page 4 of Japanese Utility Model Application Publication No. 5-27625, wherein the water meter has : a water consumption detecting device for detecting the amount of water consumed in a system to be measured to output a signal; a controller adapted for compiling the signal output from the water consumption detecting device into data; and a display for displaying the The edited data of the controller. [0003] Such a conventional water meter uses a combination of a water wheel that rotates at rpm proportional to the flow of water flowing in the water line, and a magnetic sensor that is used as a water usage detection device. The rpm of the water wheel ...

Claims

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Application Information

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IPC IPC(8): G01F1/58G01F15/00
CPCY02B10/50
Inventor 武田正春铃木重久
Owner KK TOSHIBA
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