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Double-magnetic-circuit sensor

A sensor and dual magnetic circuit technology, applied in the field of magnetic circuit sensors, can solve problems such as difficult coil movement and reduced sensitivity, and achieve the effect of improving sensitivity and facilitating use and analysis

Active Publication Date: 2021-06-15
INST OF ENG MECHANICS CHINA EARTHQUAKE ADMINISTRATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] When the existing magnetoelectric sensor is not in use, the elastic deformation of the mounting plate is used to adjust the position of the coil, but when the initial vibration occurs, the setting of the mounting plate will also make the movement of the coil more difficult, resulting in a decrease in sensitivity

Method used

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Embodiment

[0055] refer to Figure 1 to Figure 5 , the embodiment of the present invention discloses a dual magnetic circuit sensor, which includes a yoke 110 , a connecting rod 300 , two permanent magnets 120 , two armatures 130 , two mounting plates 210 and two winding brackets 400 .

[0056] The yoke 110 is in the shape of "I", and the yoke 110 includes two spaces 111 and a mounting hole connecting the two spaces 111 . The two permanent magnets 120 are respectively installed in the two spaces 111, and the N poles or S poles of the two permanent magnets 120 abut against the middle of the yoke 110, that is, the magnetic poles of the two permanent magnets 120 are arranged opposite to each other, so that the yoke 110 The whole is N pole or S pole, and the two armatures 130 are respectively located in the two spaces 111. The two armatures 130 are arranged in one-to-one correspondence with the two permanent magnets 120. The armatures 130 are installed on the side of the permanent magnet 120...

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Abstract

The invention discloses a double-magnetic-circuit sensor, which belongs to the field of magnetic circuit sensors and comprises a yoke, a connecting rod, two permanent magnets, two armatures, two mounting plates and two winding brackets, wherein N poles or S poles of the two permanent magnets abut against the middle of the yoke, and the armatures are installed on the sides, away from the yoke, of the permanent magnets; the two mounting plates are mounted on the two sides of the yoke respectively, the permanent magnet is sleeved with the winding supports, the two winding supports are fixedly connected with the connecting rod, and the two ends of the connecting rod are slidably connected with the two mounting plates respectively. The double-magnetic-circuit sensor disclosed by the invention can generate two groups of electromotive force signals at the same time, the electromotive force signals are convenient to use and analyze, meanwhile, the connecting rod is in sliding connection with the yoke, and when vibration is received, the connecting rod can quickly drive the winding bracket to synchronously vibrate so that sensitivity of the double-magnetic-circuit sensor is improved.

Description

technical field [0001] The invention relates to the field of magnetic circuit sensors, in particular to a dual magnetic circuit sensor. Background technique [0002] The magnetoelectric sensor uses the principle of electromagnetic induction to convert the input motion speed into the induced potential output in the coil. It directly converts the mechanical energy of the measured object into electrical signal output, and does not need an external power supply for its work. It is a typical passive sensor. Generally, an elastic member is provided in the magnetoelectric sensor to transmit the input motion. [0003] When the existing magnetoelectric sensors are not in use, the elastic deformation of the mounting plate is used to adjust the position of the coil, but at the initial vibration, the setting of the mounting plate will also make the movement of the coil more difficult, resulting in a decrease in sensitivity. Contents of the invention [0004] The technical problem to...

Claims

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Application Information

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IPC IPC(8): G01H11/02G01V1/18
CPCG01H11/02G01V1/182
Inventor 杨巧玉高峰杨学山
Owner INST OF ENG MECHANICS CHINA EARTHQUAKE ADMINISTRATION
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