CN203596127U - Novel magnetoresistive sensor and geomagnetic field experimental instrument - Google Patents
Novel magnetoresistive sensor and geomagnetic field experimental instrument Download PDFInfo
- Publication number
- CN203596127U CN203596127U CN201320636414.4U CN201320636414U CN203596127U CN 203596127 U CN203596127 U CN 203596127U CN 201320636414 U CN201320636414 U CN 201320636414U CN 203596127 U CN203596127 U CN 203596127U
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- exciting current
- sensor
- digital voltmeter
- sliding brush
- power outlet
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Abstract
The utility model relates to a novel magnetoresistive sensor and geomagnetic field experimental instrument, comprising a test platform pedestal, Helmholtz coils, a disc with angle indication, a magnetic resistance sensor, a pedestal horizontal adjusting bolts, an exciting current change-over switch, an exciting current indication digital ammeter, a sensor signal output socket, a digital voltmeter, a digital voltmeter zero setting rotary knob, an anode exciting current output socket, a cathode exciting current output socket, an exciting current adjusting rotary knob, a reset button, a digital voltmeter zero setting change-over switch, sensor seven-path signal output lines, a support, a tray, a sliding brush connecting device, a connecting key, a concentric metal conductive circular ring group, and a brush antenna group. The magnetoresistive sensor and geomagnetic field experimental instrument is characterized in that the sliding brush connecting device transmits electric signals, and the connecting key is connected with the sliding brush connecting device and the disc with angle indication, preventing the sensor seven-path signal output lines from twisting. The magnetoresistive sensor and geomagnetic field experimental instrument is convenient to use, long in service life, and is suitable for experiment teaching.
Description
Technical field
The utility model relates to a kind of novel magnetoresistive transducer and terrestrial magnetic field experiment instrument, belongs to instruments used for education.
Background technology
Along with scientific and technological development, the value of sensor is gradually by people are familiar with.Magnetoresistive transducer and terrestrial magnetic field experiment instrument are the new instrument of developing in recent years, and domestic colleges and universities all use this quasi-instrument to make teaching aid, for physics experiment teaching.Current widely used magnetoresistive transducer and terrestrial magnetic field experiment instrument are due to the non-standard operation in defect and magnetoresistive transducer and the use of terrestrial magnetic field experiment instrument of Instrument Design existence, its spoilage is up to 50%/term, the basic reason of damaging is that two stiff ends of signal wire rotate relatively while using, easily like this makes signal wire reach fatigue limit and ruptures.The utility model adopts the structure of similar motor brush, can avoid signal wire relatively to rotate, protection instrument.
Summary of the invention
The purpose of this utility model is: a kind of novel magnetoresistive transducer and terrestrial magnetic field experiment instrument are provided, change original structure, increase the service life.
For achieving the above object, the utility model is by the following technical solutions: a kind of novel magnetoresistive transducer and terrestrial magnetic field experiment instrument, comprise test platform base, Hai Muhuo coil, band angle indication disk, magnetoresistive transducer, base horizontal adjustment bolt, exciting current reversing switch, exciting current designation number reometer, sensor signal accessory power outlet, digital voltmeter, digital voltmeter zeroing knob, anodal exciting current accessory power outlet, negative pole exciting current accessory power outlet, exciting current adjusting knob, reset button, digital voltmeter zeroing reversing switch, sensor seven road output lines, support, pallet, sliding brush coupling arrangement, connecting key, metallic conduction annulus group with one heart, brush feeler group.It is characterized in that: sensor signal accessory power outlet connecting sensor seven road output lines, through sliding brush coupling arrangement, are welded on magnetoresistive transducer; Test platform fixing support for base, support connecting trays; Band angle indication disk is fixedly connected with key, connects sliding brush coupling arrangement, reaches the object of measuring terrestrial magnetic field size.
The utlity model has following beneficial effect: (1) realizes the measurement function of weak terrestrial magnetic field; (2) facilitate student to operate; (3) save laboratory cost, have good economic benefit; (4) being adapted at Ge great colleges and universities promotes.
Accompanying drawing explanation
Fig. 1 is the utility model structural drawing.
Fig. 2 is novel magnetoresistive transducer and terrestrial magnetic field experiment instrument core texture figure (pallet vertical view).
Embodiment
Below in conjunction with accompanying drawing, the utility model is elaborated.
As Fig. 1, shown in Fig. 2, a kind of novel magnetoresistive transducer and terrestrial magnetic field experiment instrument, comprise test platform base 1, Hai Muhuo coil 2, band angle indication disk 3, magnetoresistive transducer 4, base horizontal adjustment bolt 5, exciting current reversing switch 6, exciting current designation number reometer 7, sensor signal accessory power outlet 8, digital voltmeter 9, digital voltmeter zeroing knob 10, anodal exciting current accessory power outlet 11, negative pole exciting current accessory power outlet 12, exciting current adjusting knob 13, reset button 14, digital voltmeter zeroing reversing switch 15, sensor seven road output lines 16, support 17, pallet 18, sliding brush coupling arrangement 19, connecting key 20, metallic conduction annulus group 21 with one heart, brush feeler group 22.
It is characterized in that: concentric metallic conduction annulus group 21, brush feeler group 22 are installed on sliding brush coupling arrangement 19; Between annulus in metallic conduction annulus group 21, separate with insulating material with one heart, brush feeler group 22 is slided in the concentric metallic conduction annulus group 21 of correspondence.Metallic conduction annulus group 21 can be transmitted seven road electric signal with one heart, and fixing concentric metallic conduction annulus group 21, allows brush feeler group 22 rotate, and sliding brush coupling arrangement 19 can be realized the slip electrical connection of stiff end and round end, transmits electric signal; There is the circular hole of a diameter 23mm at pallet 18 centers; Support 17 support trays 18, make a call to the hole of four diameter 5mm on pallet 18, make a call to the hole corresponding to position in hole on four and pallet 18 on test platform base 1, and four holes are for fixed support 17; Signal wire one end of sliding brush coupling arrangement 19 is welded on magnetoresistive transducer 4; Connecting key 20 connects sliding brush coupling arrangement 19 and band angle indication disk 3, realizes both relatively rotating.Sliding brush coupling arrangement 19 rotates, and prevents that sensor seven road output lines 16 are wound around.
The method that realizes mensuration terrestrial magnetic field is: Hai Muhuo time coil 2 is connected in series with anodal exciting current accessory power outlet 11 and negative pole exciting current accessory power outlet 12, regulates exciting current adjusting knob 13, provides an externally-applied magnetic field, for magnetoresistive transducer 4 is calibrated.Magnetoresistive transducer 4 is parallel to be fixed on band angle indication disk 3, utilize level indication, adjusting base horizontal adjustment bolt 5, band angle indication disk 3 is adjusted to horizontality, press reset button 14, eliminate remanent magnetism, rotating band angle indication disk 3 finds and is shown as peaked position when digital voltmeter 9, band angle indication disk 3 Rotate 180s ° left and right, finds the position that is shown as minimum value when digital voltmeter 9.Regulate exciting current reversing switch 6, repeatedly repeat said process, read experimental data; Sensor seven road output lines 16 can not rupture because of band angle indication disk 3 multiple rotaries, thus protection instrument.
The utility model, compared with present widely used instrument, has solved the transmission problem of signal from stiff end to round end, has reduced the maintenance load of instrument, and this technology can be promoted to instrument producer and colleges and universities.
Claims (1)
1. a novel magnetoresistive transducer and terrestrial magnetic field experiment instrument, device comprises: test platform base (1), Hai Muhuo coil (2), band angle indication disk (3), magnetoresistive transducer (4), base horizontal adjustment bolt (5), exciting current reversing switch (6), exciting current designation number reometer (7), sensor signal accessory power outlet (8), digital voltmeter (9), digital voltmeter zeroing knob (10), anodal exciting current accessory power outlet (11), negative pole exciting current accessory power outlet (12), exciting current adjusting knob (13), reset button (14), digital voltmeter zeroing reversing switch (15), sensor seven road output lines (16), support (17), pallet (18), sliding brush coupling arrangement (19), connecting key (20), metallic conduction annulus group (21) with one heart, brush feeler group (22), it is characterized in that: sensor signal accessory power outlet (8) connecting sensor seven road output lines (16), through sliding brush coupling arrangement (19), are welded on magnetoresistive transducer (4), test platform base (1) fixed support (17), support (17) connecting trays (18), band angle indication disk (3) is fixedly connected with key (20), connects sliding brush coupling arrangement (19), reaches the object of measuring terrestrial magnetic field size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320636414.4U CN203596127U (en) | 2013-10-16 | 2013-10-16 | Novel magnetoresistive sensor and geomagnetic field experimental instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320636414.4U CN203596127U (en) | 2013-10-16 | 2013-10-16 | Novel magnetoresistive sensor and geomagnetic field experimental instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203596127U true CN203596127U (en) | 2014-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320636414.4U Expired - Fee Related CN203596127U (en) | 2013-10-16 | 2013-10-16 | Novel magnetoresistive sensor and geomagnetic field experimental instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203596127U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105280065A (en) * | 2015-11-11 | 2016-01-27 | 韩秋红 | Earth magnetic field power generation demonstration experiment instrument |
| CN108089139A (en) * | 2018-01-30 | 2018-05-29 | 江苏多维科技有限公司 | Resettable bipolar switch sensor |
-
2013
- 2013-10-16 CN CN201320636414.4U patent/CN203596127U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105280065A (en) * | 2015-11-11 | 2016-01-27 | 韩秋红 | Earth magnetic field power generation demonstration experiment instrument |
| CN108089139A (en) * | 2018-01-30 | 2018-05-29 | 江苏多维科技有限公司 | Resettable bipolar switch sensor |
| CN108089139B (en) * | 2018-01-30 | 2024-02-27 | 江苏多维科技有限公司 | Double-pole switch sensor capable of resetting |
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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: 20140514 Termination date: 20141016 |
|
| EXPY | Termination of patent right or utility model |