CN203177957U - Magneto-electric absolute speed sensor - Google Patents
Magneto-electric absolute speed sensor Download PDFInfo
- Publication number
- CN203177957U CN203177957U CN 201320169119 CN201320169119U CN203177957U CN 203177957 U CN203177957 U CN 203177957U CN 201320169119 CN201320169119 CN 201320169119 CN 201320169119 U CN201320169119 U CN 201320169119U CN 203177957 U CN203177957 U CN 203177957U
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- CN
- China
- Prior art keywords
- spring
- cavity
- coil
- damping ring
- magneto
- 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
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Abstract
The utility model discloses a magneto-electric absolute speed sensor comprising a first spring, a second spring, a shell, a damping ring, magnetic steel, a coil, a spindle, an outgoing line, a first cavity and a second cavity. The coil and the damping ring are positioned on the spindle. The first spring and the coil are positioned inside the first cavity. One end of the first spring is connected with the coil, and the other end of the first spring is connected with the inner wall of the first cavity. The second spring and the damping ring are positioned inside the second cavity. One end of the second spring is connected with the damping ring, and the other end of the second spring is connected with the inner wall of the second cavity. The magnetic steel is positioned between the first cavity and the second cavity. The outgoing line is connected with the coil. The vibration acceleration in any direction can be measured by the magneto-electric absolute speed sensor. The measuring method is simple and the cost is low. The magnetic distance between a top rod and the magnetic steel is always unchangeable so that the stability of working performance is enhanced, the coil is protected against being broken and is also convenient to change. Therefore, the measuring accuracy of the sensor is enhanced.
Description
Technical field
The utility model relates to a kind of sensor, relates in particular to a kind of magneto-electric absolute velocity sensor.
Background technology
The used magnetoelectric sensor of measurement mechanical vibration both at home and abroad all is the velocity profile sensor at present, and two kinds of versions are generally arranged.A kind of is that shell and the center magnet steel of sensor is affixed, and pornographic movie is bearing in shell to coil and the magnet steel annular is asked between the crack by playing, and shell and coil that another kind of version is sensor are affixed, and magnet steel supports with spring leaf.When sensor is installed on the vibrating object, make magnet steel and coil produce relative motion, thereby generation is proportional to the voltage signal of vibration velocity, want the measuring vibrations acceleration, then need connect differentiating circuit in addition, rate signal is transformed into acceleration signal, because the error that differential produces is bigger, thereby make the distortion of acceleration waveform, can not get acceleration signal accurately.
The utility model content
The purpose of this utility model provides a kind of simple in structure with regard to being in order to address the above problem, the magneto-electric absolute velocity sensor that measuring accuracy is high.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises first spring, second spring, housing, damping ring, magnet steel, coil, mandrel, extension line, first cavity and second cavity, described coil and described damping ring are arranged on the described mandrel, described first spring and described coil are arranged in described first cavity, one end of described first spring is connected with described coil, the other end of described first spring is connected with the inwall of described first cavity, described second spring and described damping ring are arranged in described second cavity, one end of described second spring is connected with described damping ring, the other end of described second spring is connected with the inwall of described second cavity, be provided with described magnet steel between described first cavity and described second cavity, described extension line is connected with described coil.
The beneficial effects of the utility model are:
The utility model can be measured the vibration acceleration of any direction, and measuring method is simple, and cost is lower; yoke distance between push rod and the magnet steel is constant all the time, has improved the stability of serviceability, and the protection coil is difficult for fractureing; be convenient to replacing, thereby improved the measuring accuracy of sensor.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among the figure: 1-first spring, 2-second spring, the 3-damping ring, the 4-magnet steel, the 5-coil, the 6-mandrel, the 7-extension line, 8-first cavity, 9-second cavity, the 10-housing,
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, the utility model comprises first spring 1, second spring 2, housing 10, damping ring 3, magnet steel 4, coil 5, mandrel 6, extension line 7, first cavity 8 and second cavity 9, coil 5 and damping ring 3 are arranged on the mandrel 6, first spring 1 and coil 5 are arranged in first cavity 8, one end of first spring 1 is connected with coil 5, the other end of first spring 1 is connected with the inwall of first cavity 8, second spring 2 and damping ring 3 are arranged in second cavity 9, one end of second spring 2 is connected with damping ring 3, the other end of second spring 2 is connected with the inwall of second cavity 9, be provided with magnet steel 4 between first cavity 8 and second cavity 9, extension line 7 is connected with coil 5.
Principle of work of the present utility model: when vibration measuring, sensor is fixed or is pressed in system under test (SUT), magnet steel 4 vibrates with the vibration of system under test (SUT) with housing 2, is contained in coil 5 on the mandrel 6 and damping ring 3 and forms the mass of inertia systems and move in magnetic field.Spring leaf 1 radial rigidity is very big, axial rigidity is very little, makes inertia system both obtain reliable radial support, guarantees to have very low axial natural frequency again.Damping ring 3 can increase the inertia system quality on the one hand, reduces natural frequency, and the damping force that motion produces in magnetic field makes vibrational system have rational damping on the other hand.Because of the ingredient of coil 4 as mass, when it moves in magnetic field, its output voltage is directly proportional with the speed of coil cutting magnetic line, mass is close to static in absolute space, thus the relative displacement of measured object (it and housing affixed) and mass, relative velocity just approximate its absolute displacement and absolute velocity respectively.
Claims (1)
1. magneto-electric absolute velocity sensor, it is characterized in that: comprise first spring, second spring, housing, damping ring, magnet steel, coil, mandrel, extension line, first cavity and second cavity, described coil and described damping ring are arranged on the described mandrel, described first spring and described coil are arranged in described first cavity, one end of described first spring is connected with described coil, the other end of described first spring is connected with the inwall of described first cavity, described second spring and described damping ring are arranged in described second cavity, one end of described second spring is connected with described damping ring, the other end of described second spring is connected with the inwall of described second cavity, be provided with described magnet steel between described first cavity and described second cavity, described extension line is connected with described coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320169119 CN203177957U (en) | 2013-04-08 | 2013-04-08 | Magneto-electric absolute speed sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320169119 CN203177957U (en) | 2013-04-08 | 2013-04-08 | Magneto-electric absolute speed sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203177957U true CN203177957U (en) | 2013-09-04 |
Family
ID=49074640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320169119 Expired - Fee Related CN203177957U (en) | 2013-04-08 | 2013-04-08 | Magneto-electric absolute speed sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203177957U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925987A (en) * | 2013-09-27 | 2014-07-16 | 安徽省传感器厂 | Inertia moving coil type electric sensor |
| CN114371308A (en) * | 2022-01-14 | 2022-04-19 | 上海大学 | Magnetic suspension absolute speed sensor |
-
2013
- 2013-04-08 CN CN 201320169119 patent/CN203177957U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925987A (en) * | 2013-09-27 | 2014-07-16 | 安徽省传感器厂 | Inertia moving coil type electric sensor |
| CN114371308A (en) * | 2022-01-14 | 2022-04-19 | 上海大学 | Magnetic suspension absolute speed sensor |
| CN114371308B (en) * | 2022-01-14 | 2022-08-30 | 上海大学 | Magnetic suspension absolute speed sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20140408 |