CN203607178U - Low-power-consumption magnetic shielding non-contact potentiometer - Google Patents
Low-power-consumption magnetic shielding non-contact potentiometer Download PDFInfo
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- CN203607178U CN203607178U CN201320842067.0U CN201320842067U CN203607178U CN 203607178 U CN203607178 U CN 203607178U CN 201320842067 U CN201320842067 U CN 201320842067U CN 203607178 U CN203607178 U CN 203607178U
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- potentiometer
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- high impedance
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 230000001419 dependent effect Effects 0.000 claims abstract description 12
- 239000004065 semiconductor Substances 0.000 claims description 8
- 150000001875 compounds Chemical group 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- -1 rotating shaft Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model relates to the field of electronic apparatuses, and specifically relates to a low-power-consumption magnetic shielding non-contact potentiometer. The potentiometer comprises a sensing circuit. The potentiometer is characterized by comprising magnetic steel, a high impedance magneto-dependent sensor, a rotary shaft and a magnetic shell for accommodating the parts, wherein the magnetic steel is fixed at one end of the rotary shaft and can rotate with the rotary shaft, and the high impedance magneto-dependent sensor is arranged inside a magnetic field generated when the magnetic steel rotates and is communicated with the sensing circuit. The potentiometer provided by the utility model has the advantages that the defect that the common non-contact potentiometer is high in inherent power consumption and is interfered by outside magnetic fields is overcome in the aspect of product performance; in addition, the potentiometer is in the non-contact manner, so that the service life is greatly prolonged compared with that of conventional potentiometers; a 360-degree effective working range can be realized.
Description
Technical field
The utility model relates to field of electronic devices, is specifically related to a kind of low-watt consumption magnetic shielding noncontact potentiometer.
Background technology
At present, common potentiometer is brush contact working method, and structure is by resistive element, sliding brush, the compositions such as rotating shaft, shell.Supply power voltage is carried in resistive element two ends, and brush slides and surveys the also voltage of output brush position on it, is the mode directly contacting.There are several intrinsic defects in it:
1. brush slides to rub and exists on resistive element, causes its working life limited, and simultaneously due to wearing and tearing, precision also can change;
2. due to the relation of structure, resistive element cannot be accomplished 360 °, and therefore potentiometer exists blind area;
3. the voltage signal that potentiometer generally can only output linearity changes, is difficult to realize for special output signal and curve.
In order to overcome, the existing complex structure of above-mentioned contact-cup anemometer, life-span are limited, the linearity changes, has work blind area and the single deficiency of output signal with wearing and tearing, those skilled in the art have developed a kind of non-contact digital potentiometer, this potentiometer comprises magnet steel, hall sensing transducer and rotating shaft, in the time that magnet steel rotates with rotating shaft, the magnetic field when Hall element that is positioned at magnet steel below gathers its rotation, obtain angle position signal by sensing circuit processing, and by change-over circuit, angle position signal is converted to required signal.But there is the problem that power consumption is high, be easily subject to external magnetic field interference in this type of non-contact digital potentiometer.
Summary of the invention
The purpose of this utility model is according to above-mentioned the deficiencies in the prior art part, a kind of low-watt consumption magnetic shielding noncontact potentiometer is provided, magneto-dependent sensor in this potentiometer is by adopting high impedance magnetic resistance semiconductor to replace conventional Hall semiconductor to reduce the power consumption of Hall element, and the problem that disturbed by external magnetic field in inside cavity formation magnetic field shielding space to solve potentiometer by the permeance of magnetic conductive shell.
The utility model object realizes and being completed by following technical scheme:
A kind of low-watt consumption magnetic shielding noncontact potentiometer, comprise sensing circuit, it is characterized in that described potentiometer comprises the magnetic conductive shell of magnet steel, high impedance magneto-dependent sensor, rotating shaft and accommodating above-mentioned parts, described magnet steel is fixed on one end of described rotating shaft and can rotates with described rotating shaft, the inside, magnetic field that described high impedance magneto-dependent sensor produces while being arranged at described magnet steel rotation, and be communicated with described sensing circuit.
Described magnetic conductive shell is made up of separately steel layer.
Described magnetic conductive shell is by plastic layer and steel layer is compound forms.
Described high impedance magneto-dependent sensor is made up of high impedance magnetosensitive semiconductor and the input pin and the output pin that are positioned on described high impedance magnetosensitive semiconductor.
Described magnetic conductive shell top has through hole, and described rotating shaft is fixedly connected with by ball bearing with described through hole.
Described magnet steel and described rotating shaft coaxially arrange.
The utility model has the advantages that, in properties of product, solved the defect that the intrinsic power consumption of common noncontact potentiometer itself is high and disturbed by external magnetic field; In addition, adopt cordless, compare traditional potentiometer useful life and greatly improve; Can realize the efficient working range of 360 °; Provide that output signal is optional, impulse stroke is optional, can realize flexible and changeable output.
Accompanying drawing explanation
Fig. 1 is structural front view of the present utility model;
Fig. 2 is vertical view of the present utility model;
Fig. 3 is operation principle schematic diagram of the present utility model.
Embodiment
Feature of the present utility model and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that technical staff's of the same trade understanding:
As Fig. 1-3, in figure, mark 1-13 is respectively: magnet steel 1, wiring board 2, bonnet 3, terminals 4, magnetic conductive shell 5, ball bearing 6, through hole 7, jump ring 8, rotating shaft 9, high impedance magneto-dependent sensor 10, high impedance magnetic resistance semiconductor 11, input pin 12, output pin 13.
Embodiment: as shown in Figure 1, 2, 3, the present embodiment is specifically related to a kind of low-watt consumption magnetic shielding noncontact potentiometer, and this potentiometer is made up of magnetic conductive shell 5, rotating shaft 9, magnet steel 1, wiring board 2, bonnet 3 etc.Between magnetic conductive shell 5 and bonnet 3, be fixedly connected with.Magnetic conductive shell 5 tops have through hole 7, and rotating shaft 9 is fixedly connected with through hole 7 by two groups of ball bearings 6, and ball bearing 6 can provide well axial and radial support by countershaft 9.Rotating shaft is fixedly installed magnet steel 1 on 9 lower surfaces, and the other end is fixedly connected with driving link, make magnet steel 1 can with rotating shaft 9 coaxial rotatings.Bonnet 3 upper surfaces are provided with wiring board 2, and wiring board 2 comprises high impedance magneto-dependent sensor 10, sensing circuit and change-over circuit.Wherein wiring board 2 is arranged at the inside, magnetic field producing when magnet steel 1 rotates along with rotating shaft 9.
The present embodiment is in the specific implementation: as shown in Fig. 1,2, the bottom of magnetic conductive shell 5 completes encapsulation by bonnet 3, is completed and is fixedly connected with between the two by glue.Between the gap of bonnet 3 and wiring board 2, use epoxy resin encapsulated.The interior electric part of magnetic conductive shell 5 and bonnet 3 part isolation, to realize high-protection level, meet service condition under adverse circumstances.
As shown in Figure 1, be fixedly installed jump ring 8 in rotating shaft 9 and the junction of through hole 7, with further fixed rotating shaft 9, prevent that it from rotating, axial endplay occurring again in through hole 7.
As shown in Figure 1, on the bottom of magnetic conductive shell 5, be provided with multiple terminals 4, the object of terminals 4 be to make the present embodiment potentiometer can with other associated external equipment, as connections such as memory device, signal receiving and recording equipments, facilitate technical staff to operate.
As shown in Figure 3, high impedance magneto-dependent sensor 10 in the present embodiment is made up of high impedance magnetosensitive semiconductor 11 and the input pin 12 being located thereon and output pin 13, owing to adopting novel high impedance magnetoresistance material to replace normally used Hall material, high material impedance obviously declines the operating current under equal voltage, has solved the high problem of common Hall element power consumption.According to contrast test, the static working current in the present embodiment is decreased to 0.04mA from 7～10mA of Hall element, declines approximately 99.6%.
As shown in Figure 1, it is that basic permeability magnetic material is made that magnetic conductive shell 5 in the present embodiment adopts steel, iron, conventionally formed separately by a steel layer, also can by plastic layer and steel layer is compound form, by utilizing the permeance of metal shell, form the space to magnetic field shielding in the inside cavity of magnetic conductive shell 1, solved the problem that noncontact potentiometer is disturbed by external magnetic field.
The beneficial effect of the present embodiment is that the contact type measurement that changes potentiometer in method of testing is the non-contact measurement of low-watt consumption magnetic shielding noncontact potentiometer.In properties of product, solve the defect that the intrinsic power consumption of common noncontact potentiometer itself is high and disturbed by external magnetic field.By the use of 2 innovative designs in the present embodiment, make low-watt consumption magnetic shielding noncontact potentiometer realize the target of low-power consumption and anti-magnetic interference.
Claims (6)
1. a low-watt consumption magnetic shielding noncontact potentiometer, comprise sensing circuit, it is characterized in that described potentiometer comprises the magnetic conductive shell of magnet steel, high impedance magneto-dependent sensor, rotating shaft and accommodating above-mentioned parts, described magnet steel is fixed on one end of described rotating shaft and can rotates with described rotating shaft, the inside, magnetic field that described high impedance magneto-dependent sensor produces while being arranged at described magnet steel rotation, and be communicated with described sensing circuit.
2. a kind of low-watt consumption magnetic shielding noncontact potentiometer according to claim 1, is characterized in that described magnetic conductive shell is made up of separately steel layer.
3. a kind of low-watt consumption magnetic shielding noncontact potentiometer according to claim 1, is characterized in that described magnetic conductive shell by plastic layer and steel layer is compound forms.
4. a kind of low-watt consumption magnetic shielding noncontact potentiometer according to claim 1, is characterized in that described high impedance magneto-dependent sensor is made up of high impedance magnetosensitive semiconductor and the input pin and the output pin that are positioned on described high impedance magnetosensitive semiconductor.
5. a kind of low-watt consumption magnetic shielding noncontact potentiometer according to claim 1, is characterized in that described magnetic conductive shell top has through hole, and described rotating shaft is fixedly connected with by ball bearing with described through hole.
6. a kind of low-watt consumption magnetic shielding noncontact potentiometer according to claim 1, is characterized in that described magnet steel and described rotating shaft coaxially arrange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320842067.0U CN203607178U (en) | 2013-12-18 | 2013-12-18 | Low-power-consumption magnetic shielding non-contact potentiometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320842067.0U CN203607178U (en) | 2013-12-18 | 2013-12-18 | Low-power-consumption magnetic shielding non-contact potentiometer |
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| Publication Number | Publication Date |
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| CN203607178U true CN203607178U (en) | 2014-05-21 |
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| CN201320842067.0U Expired - Fee Related CN203607178U (en) | 2013-12-18 | 2013-12-18 | Low-power-consumption magnetic shielding non-contact potentiometer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106782962A (en) * | 2017-01-11 | 2017-05-31 | 上海思博机械电气有限公司 | A kind of straight-line displacement potentiometer |
| CN107086100A (en) * | 2017-05-04 | 2017-08-22 | 湖南科技大学 | Magnetosensitive non-contact point potentiometer |
| CN107131893A (en) * | 2017-05-04 | 2017-09-05 | 湖南科技大学 | High-voltage breaker operation mechanism on-line monitoring angular displacement sensor |
| CN108489378A (en) * | 2018-01-25 | 2018-09-04 | 深圳市傲睿智能科技有限公司 | A kind of magnetic sensitive angle sensor |
| CN112367062A (en) * | 2020-09-25 | 2021-02-12 | 佛山市皓科控制技术有限公司 | Two-wire system 4-20MA current loop output non-contact magnetic-sensing potentiometer |
-
2013
- 2013-12-18 CN CN201320842067.0U patent/CN203607178U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106782962A (en) * | 2017-01-11 | 2017-05-31 | 上海思博机械电气有限公司 | A kind of straight-line displacement potentiometer |
| CN106782962B (en) * | 2017-01-11 | 2023-04-28 | 上海思博机械电气有限公司 | Linear displacement potentiometer |
| CN107086100A (en) * | 2017-05-04 | 2017-08-22 | 湖南科技大学 | Magnetosensitive non-contact point potentiometer |
| CN107131893A (en) * | 2017-05-04 | 2017-09-05 | 湖南科技大学 | High-voltage breaker operation mechanism on-line monitoring angular displacement sensor |
| CN107086100B (en) * | 2017-05-04 | 2018-12-18 | 湖南科技大学 | Magnetosensitive non-contact point potentiometer |
| CN108489378A (en) * | 2018-01-25 | 2018-09-04 | 深圳市傲睿智能科技有限公司 | A kind of magnetic sensitive angle sensor |
| CN112367062A (en) * | 2020-09-25 | 2021-02-12 | 佛山市皓科控制技术有限公司 | Two-wire system 4-20MA current loop output non-contact magnetic-sensing potentiometer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 |