Intelligent sampling and metering device for identifying magnetic-field interference and identification method

A technology of measuring device and sampling device, which is applied to measuring device, volume/mass flow generated by electromagnetic effect, and application of electromagnetic flowmeter to detect fluid flow, etc. interference, etc.

Pending Publication Date: 2018-02-27
GOLDCARD HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the equilateral triangle formed by the three magnetic sensors, take any corner corresponding to the vertical line and extend it, and load an external magnetic field of a certain strength on the extension line. In this case, it is impossible to identify external magnetic field interference. purpose, resulting in missed detection
[0007] To sum up, among the various metering solutions currently in use, the conventional two metering magnetic sensor solution is extremely susceptible to measurement

Method used

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  • Intelligent sampling and metering device for identifying magnetic-field interference and identification method
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  • Intelligent sampling and metering device for identifying magnetic-field interference and identification method

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Experimental program
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Embodiment 1

[0036] Such as Figures 1 to 2 As shown, the intelligent sampling and metering device in this embodiment can be a gas meter or a meter, including a metering device and a sampling device, and the metering device includes a metering code disc 11 and a magnet 10 installed on the metering code disc 11, and the magnet 10 is a magnet Or magnetic steel, preferred magnetic steel in the present embodiment, sampling device comprises control board (not shown in the figure) and the sensor group that is located on the control board, sensor group is installed on the opposite side of control board and measuring code disc 11, The sensor group in this preferred embodiment includes a first sensor group and a second sensor group distributed on two concentric circles, the first sensor group and the second sensor group respectively include several sensors distributed on the same circumference, and the magnetic steel The projection on the control board is located in the area between two concentric ...

Embodiment 2

[0057] Such as Figure 5 As shown, compared with Embodiment 1, the difference of this embodiment is that the line connecting sensor a and sensor d is a straight line passing through the center of the circle, the line connecting sensor b and sensor c is a straight line passing through the center of the circle, and the two straight lines The included angle between them is γ, satisfying 0°<γ<180°. Such a design can meet different installation layouts and performance requirements of devices, and it can also achieve the effect of this embodiment, which will not be described in detail here.

Embodiment 3

[0059] Such as Figure 6 As shown, compared with Embodiment 1, the difference of this embodiment is that the second sensor group in this embodiment includes sensor b and sensor c, and sensor b and sensor c are symmetrically distributed on both sides of sensor a or sensor d , that is, sensor b and sensor c take the y-axis connecting sensor a and sensor d as the symmetric axis, and are symmetrically distributed on both sides of the y-axis. Such a design can meet different installation layouts and performance requirements of devices, and it can also The effect of this embodiment is achieved, which will not be described in detail here.

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Abstract

The invention discloses an intelligent sampling metering device and identification method for identifying magnetic field interference, which belongs to the technical field of gas meters and solves the technical problem of inaccurate identification of external magnetic field interference in the prior art. The intelligent sampling metering device in the present invention includes a metering device and a sampling device, the metering device includes a metering code disc and a magnet installed on the metering code disc, the sampling device includes a control board and a sensor group located on the control board, and the sensor group includes the first sensors distributed on two concentric circles group and the second sensor group, the first sensor group and the second sensor group respectively include several sensors distributed on the same circumference, the projection of the magnet on the control board is located in the area between the two concentric circles, and the metering code disc drives the magnet Rotation, the rotation of the magnet causes the state change of the magnetic signal in the sensor group, and the judgment of the external interference magnetic field is realized through the change of the magnetic signal state of the sensor group.

Description

【Technical field】 [0001] The invention relates to the technical field of gas meters, in particular to an intelligent sampling and metering device. 【Background technique】 [0002] In the prior art, the intelligent sampling and metering device generally measures the flow rate by judging the magnetic signal sent by the magnetic sensor by the controller. In this way, the intelligent sampling and metering device will face the problem of external magnetic field interference, so how can it be used in any magnetic field interference situation? It is the key to flow metering equipment to identify the interference of external magnetic field. [0003] Taking a gas meter as an example, the current gas meters that use magnetic sensor devices as the source of metering signals are basically implemented using two or three magnetic sensors. There are two ways to detect external magnetic field attacks. One is that a specific magnetic sensor is used to detect external magnetic field attacks, ...

Claims

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Application Information

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IPC IPC(8): G01F1/58
CPCG01F1/582
Inventor 金磊盛成龙佟志达丁渊明赵继高陈冬
Owner GOLDCARD HIGH TECH
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