CN1888936A - Eductional geomagnetic field measurement experimental apparatus - Google Patents
Eductional geomagnetic field measurement experimental apparatus Download PDFInfo
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- CN1888936A CN1888936A CN 200610029120 CN200610029120A CN1888936A CN 1888936 A CN1888936 A CN 1888936A CN 200610029120 CN200610029120 CN 200610029120 CN 200610029120 A CN200610029120 A CN 200610029120A CN 1888936 A CN1888936 A CN 1888936A
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- geomagnetic field
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Abstract
The magnetic field test experiment equipment for teaching field belongs to test technology field. It relates to test system, pedestal, bracket, the first pin, rotating cylinder, the first handle, rotary table, the second handle, bushing, motherboard, copper pole, the second pin, dial and hand. The test system is made up by sensor, exterior circuit and data display part. The two parts fix on the motherboard respectively by two copper poles, the four copper poles connects with rotary table, the second handle connects with it which connects with the second pin by bushing. The second pin tightly assorts to rotating cylinder, the latter connects to bracket through the first pin which tightly assorts to bracket. The hand and the first handle fix on the rotating cylinder, the dial stick to the left to bracket that sets on the pedestal vertically. Its magnetoresistance sensor is small and low cost with high sensitivity, resist-electromagnetism yawp, resist-disturb capability, and dependability and is suitable to the teaching experiment in high school and academy.
Description
Technical field
The present invention relates to a kind of device of field of measuring technique, what be specifically related to is a kind of Eductional geomagnetic field measurement experimental apparatus.
Background technology
There is the terrestrial magnetic field in the earth, and the terrestrial magnetic field belongs to feeble field, and average on the ground magnetic induction density is about 0.5 to 0.6 Gauss (promptly 0.5 * 10
-4Tesla, 1 milli tesla=10 Gausses).Geomagnetic field intensity changes with the place is different with direction, as a kind of important natural magnetic source, at aspects such as military affairs, industry, medical science, mine locatings important use is arranged all.In the direct current weak magnetic measurement, also often need to know its numerical value, and manage to eliminate its influence.Therefore developing a kind of principle advanced person, simple, highly sensitive, cheap geomagnetic field measuring device, is very necessary.This device is used for the sensor or the Physical Experiment of middle school and universities as teaching equipment, also has very important practical significance.
Usually direction and the size of representing the terrestrial magnetic field with magnetic dip and magnetic induction density.Find by literature search, the surplus grade of author kingdom is in document " application of novel magnetoresistive transducer in geomagnetic field measuring " (2002 21 volume the 16th phase 43-45 pages or leaves), can measure the terrestrial magnetic field with magnetoresistive transducer though once mention, but document focuses on discussing the principle of magnetoresistive transducer and how using, experimental provision has just been done simple introduction, do not provide concrete Experimental equipment, and its experimental provision is also too simple, lacks functions such as necessary peripheral processes circuit and demonstration.
Existing in the market magnetic field measuring device, as gaussmeter, teslameter and fluxmeter etc., adopt the Hall effect principle mostly, though measurement range is bigger, also have a Presentation Function, but sensitivity is on the low side, the linearity is also bad, relatively be fit to measure than high-intensity magnetic field, the low-intensity magnetic field time error of measuring as the terrestrial magnetic field is bigger.In addition, though this quasi-instrument has been made product, price is expensive partially, and energy measurement magnetic dip not, and the teaching experimental equipment and the research that are not suitable as middle school and universities are used.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of Eductional geomagnetic field measurement experimental apparatus is provided.Among the present invention, magnetoresistive transducer has that volume is little, cost is low, highly sensitive, anti-electromagnetic noise and interference performance is strong, reliability is high and be easy to characteristics such as installation, can be used in the education experiment of middle school and universities.
The present invention is achieved by the following technical solutions, the present invention includes: measuring system, base, support, first bearing pin, rotating shaft, first handle, rotating disk, second handle, axle sleeve, base plate, copper post, second bearing pin, index dial, pointer.
Sensor and peripheral circuit are fixed on the base plate by two copper posts, and the numerical value display part also is fixed on the base plate by two copper posts.Four copper posts connect by screw thread and rotating disk.Second handle is connected on the rotating disk by screw.Rotating disk links to each other with second bearing pin by axle sleeve, and rotating disk can rotate around second bearing pin.Second bearing pin and rotating shaft wringing fit.Rotating shaft is connected on the support by first bearing pin, and rotating shaft can be around the rotation of first bearing pin, first bearing pin and and support wringing fit.Pointer and first handle by screw retention in rotating shaft.During installation, the pointer center line is by the axle center of rotating shaft, and parallel with rotating disk.Index dial fastens with glue on left side brackets.0 degree direction of index dial should be aimed at the center line of pointer, and promptly horizontal direction is zero.Support is vertically mounted on the base by screw.
During measurement, whether in surrounding environment have irony material, should avoid its interference to measurement result if at first checking.
Apparatus of the present invention are placed on the surface level, adjust first handle and make rotating disk parallel with base.Rotate second handle, the axis that makes rotating disk center on second bearing pin rotates, and keeps the parallel all the time base of rotating disk.Observe the reading of numerical value display part, when reading is maximum, note the numerical value (direction of reading maximum promptly is the direction of the horizontal component of terrestrial magnetic field magnetic induction density) of this moment.Be rotated further second handle then, observe the reading of numerical value display part, when reading hour, note the numerical value of this moment, by simple computation, just can draw the horizontal component value of terrestrial magnetic field magnetic induction density.
Apparatus of the present invention are placed on the surface level, adjust first handle and make rotating disk parallel with base.Rotate first handle, the axis that makes rotating disk center on first bearing pin rotates.Observe the reading of numerical value display part, when reading is maximum, write down the numerical value of this moment, note the angular readings (being the angle between rotating disk and the surface level) of pointer simultaneously.Be rotated further first handle then, observe the reading of numerical value display part, when reading hour, note the numerical value of this moment, note the angular readings (being the angle between rotating disk and the surface level) of pointer simultaneously,, just can draw the magnetic induction density value of magnetic dip and terrestrial magnetic field by simple computation.
The present invention is a kind of geomagnetic field measuring device based on magnetoresistive transducer, suitable teaching usefulness, has principle advanced person, simple in structure, highly sensitive, easy and simple to handle, lower-price characteristic.Utilize this experimental provision,, just can obtain comparatively accurate magnetic dip and terrestrial magnetic field magnetic induction density by simple computation.In addition, by finishing experiments of measuring, the operator not only can understand the characteristic of terrestrial magnetic field, the principle of magnetoresistance, magnetoresistive transducer and using method, but also learned a kind of simple method of accurate measurement low-intensity magnetic field, be adapted at promoting in the sensor of middle school and universities or the Physical Experiment.
The present invention accurately measures the geomagnetic field intensity except that being used for, also can be applicable to be with a wide range of applications in the fields such as compass, vehicular traffic detection, navigational system, counterfeit money discriminating, safety detection, position measurement, food machinery, mine locating, Medical Instruments and non-contact type current measurement.
Description of drawings
Fig. 1 is a principal section of the present invention structural representation
Fig. 2 is a structure vertical view of the present invention
Embodiment
As shown in Figure 1 and Figure 2, the present invention includes: measuring system 3, base 4, support 5, first bearing pin 6, rotating shaft 7, first handle 8, rotating disk 9, second handle 10, axle sleeve 11, base plate 12, copper post 13, second bearing pin 14, index dial 15, pointer 16.
For avoiding that measurement result is produced interference, base 4, support 5, rotating shaft 7, first handle 8, rotating disk 9, second handle 10, base plate 12, second bearing pin 14, index dial 15 all adopt the bakelite material, and first bearing pin 6, axle sleeve 11, copper post 13 and pointer 16 adopt copper product.
Measuring system 3 is made up of sensor and peripheral circuit 1 and numerical value display part 2, sensor in sensor and the peripheral circuit 1 adopts magnetoresistive transducer, peripheral circuit is made up of SET/RESET charge circuit, OFFSET circuit, amplifying circuit, analog to digital conversion circuit that magnetoresistive transducer needs, and numerical value display part 2 adopts LED to show.Notice during installation guaranteeing that measuring system 3 is parallel to rotating disk 9.
Sensor and peripheral circuit 1 are fixed on the base plate 12 by two copper posts 13, and numerical value display part 2 also is fixed on the base plate 12 by two copper posts 13.Four copper posts 13 connect by screw thread and rotating disk 9.Second handle 10 is connected on the rotating disk 9 by screw.Rotating disk 9 links to each other with second bearing pin 14 by axle sleeve 11, and rotating disk 9 can rotate around second bearing pin 14.Second bearing pin 14 and rotating shaft 7 wringing fits.Rotating shaft 7 is connected on the support 5 by first bearing pin 6, and rotating shaft 7 can be around first bearing pin 6 rotations, first bearing pin 6 and and support 5 wringing fits.Pointer 16 and first handle 8 by screw retention in rotating shaft 7.During installation, pointer 16 center lines are by the axle center of rotating shaft 7, and parallel with rotating disk 9.Index dial 15 fastens with glue on left side brackets 5.0 degree direction of index dial 15 should be aimed at the center line of pointer 16, and promptly horizontal direction is zero.Support 5 is vertically mounted on the base 4 by screw.
During measurement, whether in surrounding environment have irony material, should avoid its interference to measurement result if at first checking.
Apparatus of the present invention are placed on the surface level, adjust first handle 8 and make rotating disk 9 parallel with base 4.Rotate second handle 10, rotating disk 9 is rotated around the axis of second bearing pin 14, and keep the parallel all the time base 4 of rotating disk 9.Observe the reading of numerical value display part 2, when reading is maximum, note the numerical value of this moment, the direction of reading maximum promptly is the direction of the horizontal component of terrestrial magnetic field magnetic induction density.Be rotated further second handle 10 then, observe the reading of numerical value display part 2, when reading hour, note the numerical value of this moment, by simple computation, just can draw the horizontal component value of terrestrial magnetic field magnetic induction density.
Apparatus of the present invention are placed on the surface level, adjust first handle 8 and make rotating disk 9 parallel with base 4.Rotate first handle 8, rotating disk 9 is rotated around the axis of first bearing pin 6.Observe the reading of numerical value display part 2, when reading is maximum, write down the numerical value of this moment, note the angular readings of pointer simultaneously, i.e. angle between rotating disk and the surface level.Be rotated further first handle 8 then, observe the reading of numerical value display part 2, when reading hour, note the numerical value of this moment, note the angular readings of pointer simultaneously, i.e. angle between rotating disk and the surface level, by simple computation, just can draw the magnetic induction density value of magnetic dip and terrestrial magnetic field.
Claims (7)
1, a kind of Eductional geomagnetic field measurement experimental apparatus, comprise: measuring system (3), base (4), support (5), first bearing pin (6), rotating shaft (7), first handle (8), rotating disk (9), second handle (10), axle sleeve (11), base plate (12), copper post (13), second bearing pin (14), index dial (15), pointer (16), it is characterized in that: measuring system (3) is made up of sensor and peripheral circuit (1) and numerical value display part (2), sensor and peripheral circuit (1) and numerical value display part (2) are fixed on the base plate (12) by two copper posts (13) respectively, four copper posts (13) and rotating disk (9) connect, second handle (10) is connected on the rotating disk (9), rotating disk (9) links to each other with second bearing pin (14) by axle sleeve (11), second bearing pin (14) and rotating shaft (7) wringing fit, rotating shaft (7) is connected on the support (5) by first bearing pin (6), first bearing pin (6) and and support (5) wringing fit, pointer (16) and first handle (8) are fixed in the rotating shaft (7), index dial (15) sticks on the left side brackets (5), and support (5) is vertically set on the base (4).
2, Eductional geomagnetic field measurement experimental apparatus according to claim 1 is characterized in that: measuring system (3) is parallel to rotating disk (9).
3, Eductional geomagnetic field measurement experimental apparatus according to claim 1 is characterized in that: pointer (16) center line is by the axle center of rotating shaft (7), and parallel with rotating disk (9).
4, Eductional geomagnetic field measurement experimental apparatus according to claim 1 is characterized in that: rotating disk (9) can rotate around second bearing pin (14), and rotating shaft (7) can be around first bearing pin (6) rotation.
5, Eductional geomagnetic field measurement experimental apparatus according to claim 1 is characterized in that: 0 degree direction of index dial (15) should be aimed at the center line of pointer (16), and promptly horizontal direction is zero.
6, Eductional geomagnetic field measurement experimental apparatus according to claim 1 is characterized in that: base (4), support (5), rotating shaft (7), first handle (8), rotating disk (9), second handle (10), base plate (12), second bearing pin (14), index dial (15) all adopt the bakelite material.
7, Eductional geomagnetic field measurement experimental apparatus according to claim 1 is characterized in that: first bearing pin (6), axle sleeve (11), copper post (13) and pointer (16) adopt copper product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610029120XA CN100489561C (en) | 2006-07-20 | 2006-07-20 | Educational geomagnetic field measurement experimental apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610029120XA CN100489561C (en) | 2006-07-20 | 2006-07-20 | Educational geomagnetic field measurement experimental apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1888936A true CN1888936A (en) | 2007-01-03 |
| CN100489561C CN100489561C (en) | 2009-05-20 |
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ID=37578223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610029120XA Expired - Fee Related CN100489561C (en) | 2006-07-20 | 2006-07-20 | Educational geomagnetic field measurement experimental apparatus |
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| CN (1) | CN100489561C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103090900A (en) * | 2011-11-08 | 2013-05-08 | 美新半导体（无锡）有限公司 | Test method and test system for integrated sensor |
| CN105277815A (en) * | 2014-07-14 | 2016-01-27 | 国家电网公司 | Equipment for detecting diamagnetism |
| CN105572432A (en) * | 2016-02-05 | 2016-05-11 | 广州市交通运输职业学校 | Circuit teaching experiment-based measuring device |
| CN104101908B (en) * | 2013-07-30 | 2017-04-12 | 中国冶金地质总局山东正元地质勘查院 | Device for measuring geomagnetic field vector by spherical bias coil |
| CN110159889A (en) * | 2018-03-19 | 2019-08-23 | 许昌学院 | A kind of traffic construction measurement and positioning support device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4458205A (en) * | 1980-10-24 | 1984-07-03 | Hings Donald L | Geomagnetic prospecting method with measurements obtained during an internal of one to ten minutes time duration |
| EP0877228B1 (en) * | 1997-05-09 | 2003-08-06 | Tesa Sa | Magnetoresistance sensor for measuring dimensions |
| CN2773715Y (en) * | 2005-03-17 | 2006-04-19 | 上海复旦天欣科教仪器有限公司 | Magnetic resistance sensor and geomagnetic experimental facility |
-
2006
- 2006-07-20 CN CNB200610029120XA patent/CN100489561C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103090900A (en) * | 2011-11-08 | 2013-05-08 | 美新半导体（无锡）有限公司 | Test method and test system for integrated sensor |
| CN103090900B (en) * | 2011-11-08 | 2015-07-01 | 美新半导体（无锡）有限公司 | Test method and test system for integrated sensor |
| CN104101908B (en) * | 2013-07-30 | 2017-04-12 | 中国冶金地质总局山东正元地质勘查院 | Device for measuring geomagnetic field vector by spherical bias coil |
| CN105277815A (en) * | 2014-07-14 | 2016-01-27 | 国家电网公司 | Equipment for detecting diamagnetism |
| CN105277815B (en) * | 2014-07-14 | 2017-11-21 | 国家电网公司 | One kind detects diamagnetic equipment |
| CN105572432A (en) * | 2016-02-05 | 2016-05-11 | 广州市交通运输职业学校 | Circuit teaching experiment-based measuring device |
| CN105572432B (en) * | 2016-02-05 | 2018-08-07 | 广州市交通运输职业学校 | A kind of measuring device based on electric circuit teaching experiment |
| CN110159889A (en) * | 2018-03-19 | 2019-08-23 | 许昌学院 | A kind of traffic construction measurement and positioning support device |
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| Publication number | Publication date |
|---|---|
| CN100489561C (en) | 2009-05-20 |
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Granted publication date: 20090520 Termination date: 20120720 |