CN203551757U - Experimental device used for measuring solenoid axis magnetic induction intensity by adopting Hall effect method - Google Patents
Experimental device used for measuring solenoid axis magnetic induction intensity by adopting Hall effect method Download PDFInfo
- Publication number
- CN203551757U CN203551757U CN201320642139.7U CN201320642139U CN203551757U CN 203551757 U CN203551757 U CN 203551757U CN 201320642139 U CN201320642139 U CN 201320642139U CN 203551757 U CN203551757 U CN 203551757U
- Authority
- CN
- China
- Prior art keywords
- hall element
- solenoid
- current
- master controller
- hall
- 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
Links
Images
Landscapes
- Measuring Magnetic Variables (AREA)
Abstract
The utility model provides an experimental device used for measuring solenoid axis magnetic induction intensity by adopting a Hall effect method. An axis of a solenoid is provided with a guide rail, which is provided with a Hall element and a linear motor, and then the Hall element is connected with the linear motor by a connecting rod. The linear motor is connected with a driver, and a numerical control constant current source is connected with the solenoid and the Hall element. A main controller is connected with the Hall element. By setting the position of the Hall element, the linear motor can be used to drive the Hall element to move to the position. By setting the value of the solenoid field current IM and the value of the Hall element driving current IS, four output voltages of the Hall element under the different IM and IS in different directions can be measured according to the symmetric measurement method, and therefore the magnetic induction intensity can be calculated. The experimental device is advantageous in that the positioning is accurate, the direction and the value of the exciting current and the driving current can be changed conveniently, the measuring time can be controlled accurately, the heating of the solenoid can be prevented, and therefore the experimental precision can be improved, the experimental device can be protected, the Hall element can be used to drive the current detection device, and the burnout of the Hall element caused by the overlarge current can be prevented.
Description
Technical field
The utility model relates to a kind of Experiment of College Physics device, specifically relates to the experimental provision that a kind of Hall effect method is measured solenoid axis magnetic induction density.
Background technology
Hall effect refers to the carrying object that is placed in magnetic field, if direction of current is vertical with magnetic direction, in the direction perpendicular to electric current and magnetic field, can produce an additional transverse electric field, be called Hall field, thereby can produce a voltage in carrying object both sides, this voltage is called Hall voltage, and this phenomenon is called Hall effect, because the initial Shi You of this phenomenon postgraduate of John Hopkins University Hall was found in 1879.
Hall effect has a lot of purposes.Along with developing rapidly of semiconductor physics, Hall effect has become one of Main Means of research semiconductor material, measure by experiment Hall coefficient and the conductivity of semiconductor material, can judge its conduction type, be N-type semiconductor or P-type semiconductor, and can calculate the important parameters such as carrier concentration and mobility.Further measure Hall coefficient and the temperature variant relation of conductivity of semiconductor material, can also obtain the impurity ionization energy of semiconductor material and energy gap etc.In addition, in industry, national defence and scientific research, aspects such as particle cyclotron, controlled thermonuclear reaction, isotopic separation, earth resources detection, earthquake prediction and magnetic material research, often will measure magnetic field.The method of measuring magnetic field is a lot, mainly contains ballistic galvanometer method, Hall effect method, nuclear magnetic resonance method and sedimentation balance method etc.Wherein Hall effect method have simple in structure, probe size is little, measurement is fast and the direct advantage such as continuous-reading.Development along with electronic technology, the hall device that utilizes Hall effect to make, simple in structure, the life-span is long, reliability is high, frequency response wide (up to 10GHz), has been widely used in a lot of aspects such as Non-Electricity Measurement, Automatic Detection and Control and information processing.
Therefore, the experiment of Hall effect measuring magnetic field just becomes a very common experimental project in Experiment of College Physics.In Experiment of College Physics at present, Hall effect experiment is generally to take Hall element to measure the distribution of solenoid axis magnetic induction density.Normally in long straight solenoid, pass to exciting current I
m, make its inner magnetic field that produces, adopt screw to change Hall element in the position at the inner axis of solenoid place by scale, survey it at certain drive current I
sunder output Hall voltage V
h, next according to formula V
h=K
hi
sb (K wherein
hfor Hall element sensitivity, be known quantity), just can calculate magnetic induction density B.But, when producing Hall effect, because being accompanied by multiple side effect, so that test the output voltage of the Hall element recording and be not equal to real Hall voltage V
h, but comprising the auxiliary voltage that various side effects cause simultaneously.According to the mechanism of production of various side effects, conventionally adopt the symmetrical measurement method of electric current and magnetic field commutator, substantially the impact of side effect can be eliminated from measurement result.Specific practice is to keep I
sand B (is I
m) size constant, set its positive dirction, measure successively following four groups of different directions I
swith B combination, i.e. (+I
s,+B), (+I
s,-B), (I
s,-B) and (I
s,+B) time Hall element output voltage, be respectively V
1, V
2, V
3and V
4, then substitution formula can obtain
the Hall voltage V trying to achieve by this symmetrical measurement method
halthough, also there is the side effect that cannot eliminate individually, the error of its introducing is very little, negligible.
Current experimental provision mainly has the following disadvantages:
One, adopts screw to change Hall element in the position at the inner axis of solenoid place by scale, complex operation, and positioning precision is not high.
Its two, symmetrical measurement method generally adopts dpdt double-pole double-throw (DPDT) commutation plug-in strip to realize, in experiment, each position all needs to switch four times, operation is dull to be repeated, and the contact component that easily weares and teares, and affects experimental precision.
They are three years old, because the exciting current in solenoid is larger, easily heating works long hours, while measuring on request, connect, measure complete horse back and disconnect, but often do not note in student experimenting, solenoid is worked always, generate heat even hot, not only affect experiment effect but also easily instrument caused to damage.
Its four, the exciting current in solenoid is larger, the drive current in Hall element is smaller, in experimentation, if student mistake, by the two wrong, can be burnt Hall element.
Summary of the invention
In order to overcome the above-mentioned deficiency of prior art, the utility model proposes a kind of novel Hall effect method and measure the experimental provision of solenoid axis magnetic induction density, this device adopts linear electric motors to drive Hall element to move in solenoid, accurate positioning is convenient, solenoid exciting current and Hall element drive current adopt digital-control constant-flow source to provide, can change easily direction and size, and can the control survey time, solenoid heating avoided.
The utility model solves the technical scheme that its technical matters adopts: at a solenoid axis place, one guide rail is set, a guide rail part is positioned at solenoid inside, one Hall element is set above, can move freely along guide rail, another part is positioned at solenoid outside, and linear electric motors are set above, between linear electric motors and Hall element, by connecting link, be connected, to drive Hall element to move along guide rail, a displacement transducer is set on connecting link, be used for determining the position of Hall element in solenoid.Linear electric motors are connected with linear motor driver, linear motor driver and displacement transducer are connected with master controller by interface respectively, by the Hall element displacement adjusting knob on master controller, can set the position of Hall element in solenoid, during measurement, by master controller, by linear motor driver, control linear electric motors and move, thereby drive Hall element to move to setting position along guide rail.Digital-control constant-flow source is connected with solenoid and Hall element by interface, be respectively it exciting current and drive current are provided, digital-control constant-flow source is connected with master controller by interface, by the solenoid exciting current on master controller and Hall element drive current switching key and digital-control constant-flow source current adjusting knob, can set respectively the size of solenoid exciting current and Hall element drive current, and show by digital-control constant-flow source electric current display screen, be specially button and press the size that solenoid exciting current can be set, button is upspring the size of Hall element drive current can be set, during measurement, by master controller, can make the direction of the two change successively by the requirement of symmetrical measurement method, and can control turn-on time, avoid the long-time heating power of solenoid.Hall element drive current detection means is connected with master controller, once electric current is excessive, automatically disconnects, and avoids Hall element to burn.Master controller is connected with Hall element by interface, measures its output voltage, the voltage in the time of can showing different direction of current successively by Hall element voltage switching query key.By the Hall element displacement adjusting knob on master controller, set the position of Hall element in solenoid, by master controller, by linear motor driver, controlling linear electric motors moves, drive Hall element to move to setting position, by electric current switching key on master controller and digital-control constant-flow source current adjusting knob, set respectively the size of solenoid exciting current and Hall element drive current, the Hall element voltage measurement of pressing on master controller starts button, under master controller effect, by the requirement of symmetrical measurement method, measures successively four groups of different directions I
shall element output voltage during with B, and then can calculate the magnetic induction density of Hall voltage and this position.
The beneficial effects of the utility model are; adopt linear electric motors accurate positioning convenient; adopt digital-control constant-flow source can change easily direction and the size of solenoid exciting current and Hall element drive current; the accurate control survey time; avoid solenoid heating, thereby improve experimental precision, Protection device; adopt Hall element drive current detection means, can avoid the excessive Hall element that burns of electric current.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Accompanying drawing is structural representation of the present utility model.
1. Hall elements in figure, 2. solenoid, 3. connecting link, 4. displacement transducer, 5. linear electric motors, 6. guide rail, 7. linear motor driver, 8. the interface one of linear electric motors and driver, 9. the interface two of linear electric motors and driver, interface between 10-13. linear motor driver and master controller, the interface one of 14. master controllers and displacement transducer, the interface two of 15. master controllers and displacement transducer, voltage interface one between 16. master controllers and Hall element, voltage interface two between 17. master controllers and Hall element, 18. digital-control constant-flow sources and Hall element drive current interface one, 19. digital-control constant-flow sources and Hall element drive current interface two, 20. Hall element drive current detection means, interface between 21. master controllers and Hall element drive current detection means, interface between 22-25. master controller and digital-control constant-flow source, 26. digital-control constant-flow sources, 27. digital-control constant-flow sources and solenoid exciting current interface one, 28. digital-control constant-flow sources and solenoid exciting current interface two, 29. digital-control constant-flow source current adjusting knobs, 30. solenoid exciting currents and Hall element drive current switching key, 31. digital-control constant-flow source electric current display screen, 32. Hall element voltage measurements start button, 33. Hall element voltages switch query key, 34. Hall element voltage display screen, 35. Hall element displacement adjusting knob, 36. Hall element displacement display screen, 37. master controllers.
Embodiment
In figure, at solenoid 2 axis places, one guide rail 6 is set, guide rail 6 parts are positioned at solenoid 2 inside, and a Hall element 1 is set above, can move freely along guide rail 6, another part is positioned at solenoid 2 outsides, one linear electric motors 5 are set above, between linear electric motors 5 and Hall element 1, by connecting link 3, are connected, can drive Hall element 1 to move along guide rail 6, one displacement transducer 4 is set on connecting link 3, is used for determining the position of Hall element 1 in solenoid 2.Linear electric motors 5 are connected with linear motor driver 7 with the interface 29 of driver with interface 1 and the linear electric motors of driver by linear electric motors, linear motor driver 7 is connected with master controller 37 with the interface 10-13 between master controller by linear motor driver, displacement transducer 4 is connected with master controller 37 with the interface 2 15 of displacement transducer with interface 1 and the master controller of displacement transducer by master controller, is used for detecting the position of Hall element 1.Hall element displacement adjusting knob 35 on master controller 37 can be set the position of Hall element 1 in solenoid 2, during measurement, by master controller 37, by linear motor driver 7, control linear electric motors 5 motions, thereby drive Hall element 1 to move to setting position along guide rail 6.Digital-control constant-flow source 26 is connected with Hall element 1 with Hall element drive current interface 2 19 with Hall element drive current interface 1 and digital-control constant-flow source by digital-control constant-flow source, for it provides drive current; Digital-control constant-flow source 26 is connected with solenoid 2 with solenoid exciting current interface 2 28 with solenoid exciting current interface 1 and digital-control constant-flow source by digital-control constant-flow source, for it provides exciting current.Digital-control constant-flow source 26 is connected with master controller 37 with the interface 22-25 between digital-control constant-flow source by master controller, by the solenoid exciting current on master controller 37 and Hall element drive current switching key 30 and digital-control constant-flow source current adjusting knob 29, can set respectively the size of solenoid exciting current and Hall element drive current, and show by digital-control constant-flow source electric current display screen 31, be specially button and press the size that solenoid exciting current can be set, button is upspring the size of Hall element drive current can be set, during measurement, by master controller, can make the direction of the two change successively, and can control turn-on time, avoid the long-time heating power of solenoid.Hall element drive current detection means 20 is connected with master controller 37 with the interface 21 between Hall element drive current detection means by master controller, once electric current is excessive, automatically disconnects, and avoids Hall element 1 to burn.Master controller 37 is connected with Hall element 1 with the voltage interface 2 17 between Hall element with voltage interface 1 and master controller between Hall element by master controller, measure its output voltage, voltage in the time of can inquiring about different direction of current successively by Hall element voltage switching query key 33, and show on Hall element voltage display screen 34.
Specific experiment operation steps is:
(1) by the Hall element displacement adjusting knob 35 on master controller 37, set the position of Hall element 1 in solenoid 2, such as high order end, by master controller 37, by linear motor driver 7, control linear electric motors 5 motions, thereby drive Hall element 1 to move to setting position along guide rail 6.
(2) press solenoid exciting current and the Hall element drive current switching key 30 on master controller 37, by digital-control constant-flow source current adjusting knob 29, set solenoid exciting current I
msize, and show by digital-control constant-flow source electric current display screen 31; Solenoid exciting current and the Hall element drive current switching key 30 of upspringing on master controller 37, by digital-control constant-flow source current adjusting knob 29, set Hall element drive current I
ssize, and show by digital-control constant-flow source electric current display screen 31.
(3) the Hall element voltage measurement of pressing on master controller 37 starts button 32, by master controller 37, by controlling digital-control constant-flow source 26, keeps I
sand B (is I
m) size constant, set its positive dirction, by the requirement of symmetrical measurement method, measure successively following four groups of different directions I
swith B combination, i.e. (+I
s,+B), (+I
s,-B), (I
s,-B) and (I
s,+B) time Hall element output voltage, be respectively V
1, V
2, V
3and V
4, and storage gets up, and next by Hall element voltage, switches query key 33 again and just can inquire about V when the different direction of current
1, V
2, V
3and V
4value, and show on Hall element voltage display screen 34.
(4) substitution formula then
obtain Hall voltage V
h.
(5) according to formula V
h=K
hi
sb (K wherein
hfor Hall element sensitivity, be known quantity), calculate magnetic induction density B herein.
(6) change successively the position of Hall element 1 in solenoid 2, obtain corresponding magnetic induction density B, just can draw out the distribution curve of solenoid axis magnetic induction density.
Above structure of the present utility model is set forth, but the not conditional intention of the embodiment that the utility model is introduced, and within not deviating from the scope of the utility model purport, the utility model can have multiple variation and modification.
Claims (4)
1. a Hall effect method is measured the experimental provision of solenoid axis magnetic induction density, it comprises a long straight solenoid, solenoid axis place arranges a guide rail, Hall element and linear electric motors are set above, by connecting link, be connected, linear electric motors are connected with driver, digital-control constant-flow source is connected with solenoid and Hall element, master controller is connected with Hall element, it is characterized in that: the Hall element displacement adjusting knob on master controller can be set the position of Hall element in solenoid, during measurement, by master controller, by linear motor driver, controlling linear electric motors moves, thereby drive Hall element to move to setting position along guide rail.
2. Hall effect method according to claim 1 is measured the experimental provision of solenoid axis magnetic induction density, it is characterized in that: digital-control constant-flow source is connected with solenoid and Hall element by interface, be respectively it exciting current and drive current are provided, digital-control constant-flow source is connected with master controller by interface, by the solenoid exciting current on master controller and Hall element drive current switching key and digital-control constant-flow source current adjusting knob, can set respectively the size of solenoid exciting current and Hall element drive current, and show by digital-control constant-flow source electric current display screen.
3. Hall effect method according to claim 1 is measured the experimental provision of solenoid axis magnetic induction density, it is characterized in that: during measurement, by master controller, can make the direction of solenoid exciting current and Hall element drive current change successively by the requirement of symmetrical measurement method, and can control turn-on time, avoid the long-time heating power of solenoid.
4. Hall effect method according to claim 1 is measured the experimental provision of solenoid axis magnetic induction density, it is characterized in that: Hall element drive current detection means is connected with master controller, once electric current is excessive, automatically disconnects, and avoids Hall element to burn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642139.7U CN203551757U (en) | 2013-10-18 | 2013-10-18 | Experimental device used for measuring solenoid axis magnetic induction intensity by adopting Hall effect method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642139.7U CN203551757U (en) | 2013-10-18 | 2013-10-18 | Experimental device used for measuring solenoid axis magnetic induction intensity by adopting Hall effect method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203551757U true CN203551757U (en) | 2014-04-16 |
Family
ID=50469854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320642139.7U Expired - Fee Related CN203551757U (en) | 2013-10-18 | 2013-10-18 | Experimental device used for measuring solenoid axis magnetic induction intensity by adopting Hall effect method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203551757U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108154773A (en) * | 2018-02-02 | 2018-06-12 | 浙江大学城市学院 | A kind of novel and multifunctional solenoid internal magnetic field distribution measuring experiment instrument |
| CN108549043A (en) * | 2018-06-26 | 2018-09-18 | 合肥中科离子医学技术装备有限公司 | A kind of cyclotron magnetic survey hall probe temperature control equipment |
| CN108710091A (en) * | 2018-05-03 | 2018-10-26 | 华中农业大学 | Input adjusting part and the solenoidal field determination experiment instrument comprising the component |
| CN114843063A (en) * | 2022-04-29 | 2022-08-02 | 盐城工学院 | Controllable magnetic field device for electrochemical test |
-
2013
- 2013-10-18 CN CN201320642139.7U patent/CN203551757U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108154773A (en) * | 2018-02-02 | 2018-06-12 | 浙江大学城市学院 | A kind of novel and multifunctional solenoid internal magnetic field distribution measuring experiment instrument |
| CN108710091A (en) * | 2018-05-03 | 2018-10-26 | 华中农业大学 | Input adjusting part and the solenoidal field determination experiment instrument comprising the component |
| CN108710091B (en) * | 2018-05-03 | 2024-03-22 | 华中农业大学 | Input adjusting assembly and solenoid magnetic field measurement experiment instrument comprising same |
| CN108549043A (en) * | 2018-06-26 | 2018-09-18 | 合肥中科离子医学技术装备有限公司 | A kind of cyclotron magnetic survey hall probe temperature control equipment |
| CN108549043B (en) * | 2018-06-26 | 2024-05-31 | 合肥中科离子医学技术装备有限公司 | Magnetic measurement Hall probe temperature control device of cyclotron |
| CN114843063A (en) * | 2022-04-29 | 2022-08-02 | 盐城工学院 | Controllable magnetic field device for electrochemical test |
| CN114843063B (en) * | 2022-04-29 | 2023-03-10 | 盐城工学院 | Controllable magnetic field device for electrochemical test |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203551757U (en) | Experimental device used for measuring solenoid axis magnetic induction intensity by adopting Hall effect method | |
| CN203858219U (en) | Device for measuring seebeck coefficient and electrical resistivity of thermoelectric material | |
| CN103197147B (en) | A kind of multi-functional contact resistance automatic measuring instrument of solar cell and measuring system thereof | |
| CN107797080B (en) | Device for realizing Hall sensor calibration by adopting NMR (nuclear magnetic resonance) equipment | |
| CN103076576B (en) | Magnetic field intensity measurement mechanism | |
| CN103472087B (en) | Thermoelectric material Seebeck coefficient measurement apparatus and method | |
| CN110133326B (en) | Multichannel single-chip differential wheel speed sensor testing tool, system and method | |
| CN103675017A (en) | Testing device and method for thermal conductivity coefficient of material | |
| Dewi et al. | Design and development of DC high current sensor using Hall-Effect method | |
| CN110501570B (en) | Electric energy measuring device and current measuring mechanism thereof | |
| CN106019180A (en) | Alkali metal atomic magnetometer air chamber electric heating magnetic field measurement method | |
| CN105288783B (en) | The method for detecting position and device of syringe pump, syringe pump sliding block | |
| CN104597387B (en) | A kind of semiconductor chilling plate parameter test device and Multi-parameter Measurement Method | |
| CN103575968A (en) | Non-contact direct current detection device | |
| CN201051137Y (en) | Magnetism parameter measurement device for lanthanon permanent magnet | |
| CN103558247B (en) | A kind of Automatic thermal conductivity coefficient measurement equipment based on thermoelectric semiconductor | |
| CN103336178B (en) | Conductor DC resistance intelligent test system and method thereof | |
| CN102539853B (en) | Adjustable and controllable electric arc generation device | |
| CN203037836U (en) | Magnetic field strength measurement device | |
| CN205067632U (en) | Characteristic test appearance of tongue tube | |
| CN202350734U (en) | Deep groove sensor of roughness measuring instrument | |
| CN103559824A (en) | Physical standard battery potential difference meter experiment instrument and method for measuring potential difference by means of the experiment instrument | |
| CN204857013U (en) | Laser response helmholtz test instrument | |
| US2673326A (en) | Apparatus and method for testing magnetic material | |
| Šimša et al. | Electrical properties of single crystals of hexagonal ferrites with the W structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20141018 |
|
| EXPY | Termination of patent right or utility model |