CN2348360Y - Anti-magnetic device for electronic water meter - Google Patents
Anti-magnetic device for electronic water meter Download PDFInfo
- Publication number
- CN2348360Y CN2348360Y CN 98244972 CN98244972U CN2348360Y CN 2348360 Y CN2348360 Y CN 2348360Y CN 98244972 CN98244972 CN 98244972 CN 98244972 U CN98244972 U CN 98244972U CN 2348360 Y CN2348360 Y CN 2348360Y
- Authority
- CN
- China
- Prior art keywords
- magnetic
- water meter
- electronic water
- magnetic shielding
- utility
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses an anti-magnetic device for an electronic water meter, belonging to a magnetic shade device of a magnetic-sensing type electronic water meter used for defending the interference of an external strong magnetic field. In the utility model, a magnetic shield cavity is composed of a plurality of magnetic shield assemblies. A magnetic-sensing sensor and a working permanent magnet are positioned in the magnetic shade cavity, the interference of the external strong magnetic field can be effectively weakened, and the utility model can work normally. The utility model has the advantages of good anti-magnetic performance, simple structure, small size, and light weight.
Description
The utility model relates to electronic water meter and the magnetic shielding technology of using magneto-dependent sensor.
The principle of work of the electronic water meter of existing employing magneto-dependent sensor is basic identical, be installed in work permanent magnet on the water meter moving parts (as: impeller, gear or pointer etc.) with this part movement near magneto-dependent sensor the time, sensor produces and the proportional electronic signal of discharge the permanent magnet magnetic field sensitive.But for the electronic water meter of not taking effective antimagnetic measure, when having served as strong external disturbance Magnetic Field Source near water meter, magneto-dependent sensor will be influenced by it and operation irregularity occur, cause electronic water meter variable mistake, bring very burden for the accounting management of checking meter.Electronic water meter on the market no matter be to be used for IC-card prepaid device, still is used for automatic meter reading system now, and its antimagnetic jamming performance is generally very poor, has above-mentioned hidden danger, and is anxious to be solved.
The purpose of this utility model is: provide a kind of magnetosensitive sensor-type magnetism preventing device of electronic water meter, it has the good anti-magnetic property that is better than existing other electronic water meter, guarantees that electronic water meter can operate as normal under non-industrialness high-intensity magnetic field disturbs; It is little also to have volume simultaneously, lightweight characteristics.
The purpose of this utility model reaches like this, and a kind of antimagnetic composite set by the synthetic magnetic shielding chamber of several magnetic shielding component groups, carries out magnetic shielding to magneto-dependent sensor in the chamber and work permanent magnet.The magnetic shielding assembly material is magnetic conductivity sheet material (as iron plate etc.), is shaped as bowl-shape; Be combined into magnetic cover the screen chamber the magnetic shielding component count be no less than 2; Magneto-dependent sensor is positioned at the magnetic shielding chamber with the work permanent magnet.
The utility model magnetism preventing device makes the external disturbance Magnetic Field Source weaken greatly the effect of magneto-dependent sensor, and can not influence sensor signal does not take place normally, and magnetism preventing device has smaller volume, is included within the water meter housing, and is in light weight, thereby reaches goal of the invention.
Can also further specify by following examples the utility model.Magnetism preventing device shown in the drawings is combined into magnetic shielding chamber 4 by 3 bowl-shape magnetic shielding assemblies 1,2,3, and sensor 5 and the work permanent magnet 7 that is installed on the water meter rotational parts 6 all are in the magnetic shielding chamber 4.Affact the magnetic field intensity at place, axis apart from the outside high-intensity magnetic field source at 40mm place, axis, magnetic shielding chamber, decay to below one of percentage of not having anti-magnetic mechanism situation.Just because of this, the operate as normal of the zero power consumption magneto-dependent sensor 5 that embodiment uses is not subjected to the influence in outside high-intensity magnetic field source, has guaranteed that the electronic water meter variable externally also meets the relevant measurement standard of water meter under the disturbed condition of high-intensity magnetic field source.
The utility model magnetism preventing device is applicable to the rotor water gauge and the helical vane type water meter of various bores.Magnetic shielding element shapes, size and water meter structure adapt, and the number of packages in magnetic shielding assembly material and composition magnetic shielding chamber is decided on the magnetic shielding degree of requirement.The magnetic shielding assembly is directly punching press or be cast as subassembly reduce to constitute the component count in magnetic shielding chamber also.
Evaluation about the anti-magnetic property of water meter does not still have national standard, the utility model magnetism preventing device guarantees that electronic water meter can operate as normal under non-industrialness high-intensity magnetic field disturbs, and promptly can defend the interference to electronic water meter of high-intensity magnetic field interference source (as: various permanent magnet) that vast tap water user may start with.The utility model embodiment used surface magnetic flux density greater than 4000 Gausses' Nd-Fe-B permanent magnet as the high field interference source, this permanent magnet is the high-intensity magnetic field interference source that the general user is difficult to start with, and is used for anti-magnetic property of the present utility model is carried out more strict test.
Claims (4)
1, a kind of magnetism preventing device of electronic water meter is characterized in that: be combined into magnetic shielding chamber (4) by magnetic shielding assembly (1), (2), (3), magneto-dependent sensor in the chamber (5) and work permanent magnet (7) are carried out magnetic shielding.
2, magnetism preventing device of electronic water meter according to claim 1 is characterized in that: being shaped as of magnetic shielding assembly is bowl-shape, and material is a magnetic conductivity sheet material.
3, magnetism preventing device of electronic water meter according to claim 1 is characterized in that: the quantity of forming the magnetic shielding assembly in magnetic shielding chamber is no less than 2.
4, magnetism preventing device of electronic water meter according to claim 1 is characterized in that: magneto-dependent sensor (5) and work permanent magnet (7) are positioned at magnetic shielding chamber (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98244972 CN2348360Y (en) | 1998-10-30 | 1998-10-30 | Anti-magnetic device for electronic water meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98244972 CN2348360Y (en) | 1998-10-30 | 1998-10-30 | Anti-magnetic device for electronic water meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2348360Y true CN2348360Y (en) | 1999-11-10 |
Family
ID=33990899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98244972 Expired - Fee Related CN2348360Y (en) | 1998-10-30 | 1998-10-30 | Anti-magnetic device for electronic water meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2348360Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459241A (en) * | 2014-12-10 | 2015-03-25 | 国家电网公司 | Intelligent electric meter with mistaken meter reading preventing function |
-
1998
- 1998-10-30 CN CN 98244972 patent/CN2348360Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459241A (en) * | 2014-12-10 | 2015-03-25 | 国家电网公司 | Intelligent electric meter with mistaken meter reading preventing function |
| CN104459241B (en) * | 2014-12-10 | 2017-07-07 | 国家电网公司 | The anti-error intelligent electric meter checked meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |