CN109239627A - Hall sensor - Google Patents
Hall sensor Download PDFInfo
- Publication number
- CN109239627A CN109239627A CN201811103809.1A CN201811103809A CN109239627A CN 109239627 A CN109239627 A CN 109239627A CN 201811103809 A CN201811103809 A CN 201811103809A CN 109239627 A CN109239627 A CN 109239627A
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- Prior art keywords
- module
- hall sensor
- control module
- hall
- induced voltage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
- G01R33/07—Hall effect devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/007—Environmental aspects, e.g. temperature variations, radiation, stray fields
- G01R33/0076—Protection, e.g. with housings against stray fields
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Toxicology (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
The present invention discloses a kind of Hall sensor, wherein a kind of Hall sensor include include power module, control module, Hall plate, electromagnetic screen and sensitivity control module；The wherein power module provides power supply for modules all into Hall sensor；The Hall plate is at least partially housed in the screening arrangement, for generating the induced voltage signal mutually directly proportional to magnetic induction intensity when sensing magnetic field perpendicular inside screening arrangement；Electromagnetic screen shields external magnetic field interference for gathering internal magnetic field；Sensitivity control module, for adjusting the sensitivity of Hall plate output induced voltage signal；The control module, for controlling sensitivity control module and the sensitivity for the induced voltage signal that Hall plate exports being adjusted according to setup parameter.Technical solution of the present invention can effectively avoid signal from, by external electromagnetic interference, improving the measurement accuracy of Hall sensor in measurement process.
Description
Technical field
The present invention relates to sensor technical field, in particular to a kind of Hall sensor.
Background technique
Hall sensor is an energy converter, converts changing magnetic field to the variation of output voltage.Hall sensor energy
It is enough in measurement magnetic field, additionally can measure the physical quantity for generating and influencing magnetic field, such as be used to survey close to switch, position
Amount, tachometric survey and current measure device.
Such as Hall sensor detects electric current, and conductor to be detected is usually introduced sensor internal, is led by measuring this
The magnetic field that body generates obtains flowing through the size of current of the conductor.However usually to work in electromagnetism more complicated for Hall sensor
Environment, the induced voltage signal generated after the variation of Hall plate induced magnetic field are easy to be caused output to amplifier by electromagnetic interference
Distorted signals, influence the precision of Hall sensor.
Summary of the invention
The main object of the present invention is to provide a kind of Hall sensor, it is intended to improve the precision of Hall sensor.
To achieve the above object, Hall sensor proposed by the present invention includes power module, control module, Hall plate, electricity
Magnetic shielding device and sensitivity control module；Wherein
The power module provides power supply for modules all into Hall sensor；
The Hall plate is at least partially housed in the screening arrangement, for sense it is perpendicular in screening arrangement
Magnetic field when, generate the induced voltage signal mutually directly proportional to magnetic induction intensity；
The electromagnetic screen shields external magnetic field interference for gathering internal magnetic field；
The control module, for controlling the induced electricity that sensitivity control module exports Hall plate according to setup parameter
The sensitivity of pressure signal is adjusted.
Preferably, the output end of the power module is connect with the input terminal of the electric current drive module, and the electric current drives
The output end of dynamic model block is connect with the driving end of the Hall plate, the input of the output end of the Hall plate and the amplification module
End connection；The output end of the amplification module exports amplified induced voltage signal.
Preferably, the Hall sensor further includes program controling module；The first end of described program control module and institute
The controlled end connection of power module is stated, the second end of described program control module is connect with the control terminal of the control module.
Preferably, the Hall sensor further includes temperature sensor, and the temperature sensor and the control module connect
It connects；
The temperature sensor, for detecting the operating temperature of Hall sensor；The control module is according to detecting
It states operating temperature and temperature-compensating is carried out to the induced voltage signal of output.
Preferably, the Hall sensor further includes offset module, the input terminal of the offset module and the control mould
Block connection, the offset module are used to eliminate the offset of Hall plate output induced voltage signal.
Preferably, the Hall sensor further includes output clamper module, the first end of the output clamper module and institute
Control module connection is stated, the second end of the output clamper module is connect with the output end of the sensitivity control module.
Preferably, the Hall sensor further includes voltage regulator module, and the voltage regulator module is to the sensitivity
The induced voltage signal of control module output exports after carrying out amplitude adjusting.
Preferably, the Hall sensor further includes protective module, the protection of the protective module and the amplification module
End is connect with the output end of the sensitivity control module.
Preferably, the protective module includes zener diode, the plus earth of the zener diode, the pressure stabilizing two
The cathode of pole pipe is connect with the output end of the sensitivity control module.
Technical solution of the present invention passes through setting power module, electric current drive module, Hall plate, difference block and signal amplification
Module forms a kind of Hall sensor.Power module provides power supply, and Hall plate is worked normally.Hall plate will be felt
Sensitivity control module described in the obtained induced voltage signal output answered, carries out adjustment of sensitivity through sensitivity control module
After export to external equipment.Technical solution of the present invention shields Hall plate by electromagnetic screen, can effectively avoid
Signal, by external electromagnetic interference, improves the measurement accuracy of Hall sensor in measurement process, while being provided with sensitive
Adjustment module is spent, flexible modulation is carried out to the sensitivity of output signal, meets the needs of different occasions.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the first functional block diagram of one embodiment of Hall sensor of the present invention；
Fig. 2 is the second functional block diagram of one embodiment of Hall sensor of the present invention.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 101 | Power module | 107 | Temperature sensor |
| 102 | Hall plate | 108 | Offset module |
| 103 | Electromagnetic screen | 109 | Export clamper module |
| 104 | Sensitivity control module | 110 | Linear convergent rate output module |
| 105 | Control module | 111 | Protective module |
| 106 | Program controling module |
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and should not be understood as referring to
Show or imply its relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " are defined as a result,
Two " feature can explicitly or implicitly include at least one of the features.In addition, the technical solution between each embodiment can
It to be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution occurs
It is conflicting or when cannot achieve should people think that the combination of this technical solution is not present, also not the present invention claims protection
Within the scope of.
The present invention proposes a kind of Hall sensor.
Referring to Fig.1, in embodiments of the present invention, which includes power module 101, Hall plate 102, electromagnetic screen
Cover device 103, sensitivity control module 104 and control module 105；Wherein
The power module 101 provides power supply for modules all into Hall sensor.It should be noted that this reality
It applies in example, power module 101 is realized using the higher power supply chip of output voltage precision.The power supply chip can export it is multiple not
With the power supply of voltage value, to meet the power supply requirement of modules inside Hall sensor.
The sensitivity control module 104 exports the sensitivity of induced voltage signal for adjusting the Hall plate 102.
The control module 105, for controlling sensitivity control module 104 and being exported to Hall plate 102 according to setup parameter
The sensitivity of induced voltage signal be adjusted.Be stored with relative program in control module 105, in program can setup parameter,
To determine the sensitivity of 102 output signal of Hall plate.
The Hall plate 102, for generating mutually directly proportional to magnetic induction intensity when sensing perpendicular magnetic field
Induced voltage signal.It should be noted that the power end of Hall plate 102 is connect with power module 102, the ground connection of Hall plate 102
End ground connection.
In the present embodiment, the Hall plate 102, which is completely in, is contained in the electromagnetic screen 103.Electromagnetic shielding dress
It sets by wrapping up Hall plate 102, to make external electromagnetism that can not interfere with the normal work of Hall plate 102, simultaneously
The electromagnetic screen 103 can gather the magnetic field inside screening arrangement, so that the signal that Hall plate 102 acquires more is concentrated,
It can be improved the signal-to-noise ratio of signal source.The electromagnetic screen 103 is made of the permeability magnetic material for capableing of anti-electromagnetic interference, such as
Magnetic core.
Technical solution of the present invention passes through setting power module 101, control module 105, Hall plate 102, electromagnetic screen
103 and sensitivity control module 104, form a kind of Hall sensor.Power module 101 provides power supply, is Hall sensor
Constant current is provided, Hall plate 102 is worked normally.Hall plate 102 is defeated by the obtained induced voltage signal of induction
Out to external, Hall plate is shielded by electromagnetic screen 103, can effectively avoid signal in measurement process by
External electromagnetic interference.The control module 105 can also adjust the sensitivity of output signal by sensitivity control module, with
Meets the needs of under different occasions.
Referring to Fig. 2, in the present embodiment, the driving end of the output end of the power module 101 and the Hall plate 102 connects
It connects, the output induced voltage signal of the Hall plate 102.
Further, the Hall sensor further includes program controling module；The first end of described program control module 106
It is connect with the controlled end of the power module 101, the second end of described program control module 106 and the control module 105
Control terminal connection.
It should be noted that program controling module 106 is used for the control being burned onto initialization program in Hall sensor
In module 105, and the program in control module 105 is upgraded.
Further, the Hall sensor also temperature sensor 108, the temperature sensor 108 and the control mould
Block 106 connects；The temperature sensor 108, for detecting the operating temperature of Hall sensor.
The temperature sensor 107, for detecting the operating temperature of Hall sensor；The control module 105 is according to inspection
It measures the operating temperature and temperature-compensating is carried out to the induced voltage signal of output.It should be noted that experiment can be passed through in advance
Mode measure temperature to Hall sensor output induced voltage signal influence, that is, obtain Hall sensor temperature-compensating
Amount.By getting the temperature value of current Hall sensor, amount of temperature compensation is obtained by way of tabling look-up, adjusts induced voltage
Output, to improve output accuracy.
Further, the Hall sensor further includes offset module 108, the input terminal of the offset module 108 and institute
The connection of control module 105 is stated, the offset module 108 is used to eliminate the offset that Hall plate 102 exports induced voltage signal.It is worth
Illustrate, when electric current to be detected is zero, the induced voltage signal of output is not zero usual Hall sensor, exists partially
Move phenomenon.To eliminate this influence, it is corrected, is improved by the induced voltage signal of 108 pairs of offset module outputs of setting
The precision of output signal.
Further, the Hall sensor further includes clamper module 109, and the clamper module 109 is used for output
Induced voltage signal carries out clamper, so that the amplitude stability of the induced voltage signal of output improves defeated in a pre-set interval
The stability of induced voltage signal out.
Further, the Hall sensor includes linear convergent rate module 110, and the linear convergent rate module 110 is to described
The induced voltage signal that sensitivity control module 104 exports exports after being adjusted.In the present embodiment, linear convergent rate module 110
The slope of its linear convergent rate can be adjusted.Slope described here refers to the induced voltage that linear convergent rate module 110 exports
The ratio of signal and effect and the magnetic field strength of Hall plate 102.
Wherein, the linear convergent rate module 110 includes bleeder circuit and linearity control circuit；The bleeder circuit receives sense
Voltage signal is answered, induced voltage signal is divided, the linearity control circuit carries out the induced voltage signal after partial pressure
It is exported after linear regulation.After the adjusting of linear block, the driving capability of induced voltage signal is increased, magnetic induction is increased
The output area of voltage signal.
Further, the Hall sensor further includes voltage regulator module 109,109 pairs of institutes of the voltage regulator module
It is exported after stating the induced voltage signal progress amplitude adjusting of the output of amplification module 105.Voltage regulator module 109 receives Hall plate
The induced voltage signals of 102 outputs, and optimization processings are filtered etc. to induced voltage signal, then in output to external connection
Equipment.
Further, the Hall sensor further includes protective module 111, the protective module 111 and the amplification mould
The protection end of block 105 is connect with the output end of the amplification module 105.In the present embodiment, the protective module 111 includes pressure stabilizing
Diode, the plus earth of the zener diode, the cathode of the zener diode and the sensitivity control module 104
Output end connection.By the way that protective module 111 is arranged, the security reliability of Hall sensor is improved.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (10)
1. a kind of Hall sensor, which is characterized in that including power module, control module, Hall plate, electromagnetic screen and spirit
Sensitivity control module；Wherein
The power module provides power supply for modules all into Hall sensor；
The Hall plate is at least partially housed in the screening arrangement, for sense it is perpendicular inside screening arrangement
When magnetic field, the induced voltage signal mutually directly proportional to magnetic induction intensity is generated；
The electromagnetic screen shields external magnetic field interference for gathering internal magnetic field；
The sensitivity control module, for adjusting the sensitivity of the Hall plate output induced voltage signal；
The control module, for controlling sensitivity control module and believing the induced voltage that Hall plate exports according to setup parameter
Number sensitivity be adjusted.
2. Hall sensor as described in claim 1, which is characterized in that the output end of the power module and the Hall plate
The connection of driving end, the output end of the Hall plate connect with the input terminal of the amplification module；The output of the amplification module
End exports amplified induced voltage signal.
3. Hall sensor as described in claim 1, which is characterized in that the Hall sensor further includes process control mould
Block；The first end of described program control module is connect with the controlled end of the power module, and the second of described program control module
End is connect with the control terminal of the control module.
4. Hall sensor as described in claim 1, which is characterized in that the Hall sensor also temperature sensor, it is described
Temperature sensor is connect with the control module；
The temperature sensor, for detecting the operating temperature of Hall sensor；The control module is according to detecting the work
Make temperature and temperature-compensating is carried out to the induced voltage signal of output.
5. Hall sensor as described in claim 1, which is characterized in that the Hall sensor further includes offset module, institute
The input terminal for stating offset module is connect with the control module, and the offset module is for eliminating Hall plate output induced voltage letter
Number offset.
6. Hall sensor as described in claim 1, which is characterized in that the Hall sensor further includes output clamper mould
Block, it is described output clamper module first end connect with the control module, it is described export clamper module second end with it is described
The output end of sensitivity control module connects.
7. Hall sensor as described in claim 1, which is characterized in that the Hall sensor further includes that voltage adjusts mould
Block, the voltage regulator module export after carrying out amplitude adjusting to the induced voltage signal that the sensitivity control module exports.
8. Hall sensor as claimed in claim 6, which is characterized in that the Hall sensor includes linear convergent rate module,
The linear convergent rate module includes bleeder circuit and linearity control circuit；The bleeder circuit receives induced voltage signal, to sense
Voltage signal is answered to be divided, the linearity control circuit exports after carrying out linear regulation to the induced voltage signal after partial pressure.
9. Hall sensor as claimed in any of claims 1 to 8 in one of claims, which is characterized in that the Hall sensor also wraps
Protective module is included, the protective module is connect with the output end of the sensitivity control module.
10. Hall sensor as claimed in claim 9, which is characterized in that the protective module includes zener diode, described
The plus earth of zener diode, the cathode of the zener diode are connect with the output end of the amplification module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811103809.1A CN109239627A (en) | 2018-09-20 | 2018-09-20 | Hall sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811103809.1A CN109239627A (en) | 2018-09-20 | 2018-09-20 | Hall sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109239627A true CN109239627A (en) | 2019-01-18 |
Family
ID=65056039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811103809.1A Pending CN109239627A (en) | 2018-09-20 | 2018-09-20 | Hall sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109239627A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111483494A (en) * | 2020-05-28 | 2020-08-04 | 哈尔滨峰峰科技开发有限公司 | Anti-interference and high-precision intelligent railway axle counting equipment |
| CN112485539A (en) * | 2020-11-18 | 2021-03-12 | 上海电力大学 | Electromagnetic environment monitoring device and monitoring method |
| CN114200188A (en) * | 2021-12-06 | 2022-03-18 | 天津航空机电有限公司 | Bidirectional current detection device and method for switching device and intelligent switch |
| WO2023051180A1 (en) * | 2021-09-30 | 2023-04-06 | Oppo广东移动通信有限公司 | Smart finger ring |
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| US7843193B2 (en) * | 2007-09-21 | 2010-11-30 | Research In Motion Limited | System for testing magnetic sensitivity of Hall-effect switch |
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| CN205482990U (en) * | 2016-03-23 | 2016-08-17 | 宁波锦澄电子科技股份有限公司 | High -speed hall sensor able to programme linear |
| CN206057424U (en) * | 2016-07-11 | 2017-03-29 | 深圳市知用电子有限公司 | A kind of current measuring device |
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| JPS61172075A (en) * | 1984-03-14 | 1986-08-02 | Matsushita Electric Works Ltd | Method for adjusting sensitivity of magnetic proximity switch |
| US7843193B2 (en) * | 2007-09-21 | 2010-11-30 | Research In Motion Limited | System for testing magnetic sensitivity of Hall-effect switch |
| CN102869995A (en) * | 2010-04-28 | 2013-01-09 | 矢崎总业株式会社 | Electrical current detection device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111483494A (en) * | 2020-05-28 | 2020-08-04 | 哈尔滨峰峰科技开发有限公司 | Anti-interference and high-precision intelligent railway axle counting equipment |
| CN112485539A (en) * | 2020-11-18 | 2021-03-12 | 上海电力大学 | Electromagnetic environment monitoring device and monitoring method |
| WO2023051180A1 (en) * | 2021-09-30 | 2023-04-06 | Oppo广东移动通信有限公司 | Smart finger ring |
| CN114200188A (en) * | 2021-12-06 | 2022-03-18 | 天津航空机电有限公司 | Bidirectional current detection device and method for switching device and intelligent switch |
| CN114200188B (en) * | 2021-12-06 | 2024-03-29 | 天津航空机电有限公司 | Bidirectional current detection device and method for switching device and intelligent switch |
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Application publication date: 20190118 |