Electromagnetic levelness measuring device
The invention relates to an electromagnetic levelness measuring device comprising a first permanent magnet, a glass tube, a plurality of hall elements, and a second permanent magnet. The first permanent magnet is arranged over the glass tube; the plurality of the hall elements are horizontally space...
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| creator | DING ZHAOLU CHEN YIBAO CHAI YONGSHENG YANG SHANGXIAN JIANG MAN ZHOU JING PANG XUEWEI XIE YUPING |
| description | The invention relates to an electromagnetic levelness measuring device comprising a first permanent magnet, a glass tube, a plurality of hall elements, and a second permanent magnet. The first permanent magnet is arranged over the glass tube; the plurality of the hall elements are horizontally spaced under the glass tube in parallel; the second permanent magnet is arranged below the plurality of hall elements; the glass tube is filled with oil liquid and a movable air bubble is in the oil liquid; the first permanent magnet and the second permanent magnet are used for generating a magnetic field, the air bubble is used for changing medium in the magnetic field so that the magnetic field intensity changes correspondingly, and the plurality of hall elements outputs corresponding hall current according to the change of the magnetic field intensity. The electromagnetic levelness measuring device has advantages of simple production process, low production cost and high detection accuracy compared to the prior art. |
| format | Patent |
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The first permanent magnet is arranged over the glass tube; the plurality of the hall elements are horizontally spaced under the glass tube in parallel; the second permanent magnet is arranged below the plurality of hall elements; the glass tube is filled with oil liquid and a movable air bubble is in the oil liquid; the first permanent magnet and the second permanent magnet are used for generating a magnetic field, the air bubble is used for changing medium in the magnetic field so that the magnetic field intensity changes correspondingly, and the plurality of hall elements outputs corresponding hall current according to the change of the magnetic field intensity. 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The first permanent magnet is arranged over the glass tube; the plurality of the hall elements are horizontally spaced under the glass tube in parallel; the second permanent magnet is arranged below the plurality of hall elements; the glass tube is filled with oil liquid and a movable air bubble is in the oil liquid; the first permanent magnet and the second permanent magnet are used for generating a magnetic field, the air bubble is used for changing medium in the magnetic field so that the magnetic field intensity changes correspondingly, and the plurality of hall elements outputs corresponding hall current according to the change of the magnetic field intensity. The electromagnetic levelness measuring device has advantages of simple production process, low production cost and high detection accuracy compared to the prior art.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | GYROSCOPIC INSTRUMENTS MEASURING MEASURING DISTANCES, LEVELS OR BEARINGS NAVIGATION PHOTOGRAMMETRY OR VIDEOGRAMMETRY PHYSICS SURVEYING TESTING |
| title | Electromagnetic levelness measuring device |
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