CN209198485U - A kind of bearing velocity sensor - Google Patents
A kind of bearing velocity sensor Download PDFInfo
- Publication number
- CN209198485U CN209198485U CN201822018781.3U CN201822018781U CN209198485U CN 209198485 U CN209198485 U CN 209198485U CN 201822018781 U CN201822018781 U CN 201822018781U CN 209198485 U CN209198485 U CN 209198485U
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- China
- Prior art keywords
- bearing
- rotary shaft
- lower case
- runing rest
- velocity sensor
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Abstract
The utility model discloses a kind of bearing velocity sensors, including power plant module, housing module and induction module three parts.Wherein, housing module includes upper housing, lower case and is arranged in the intracorporal bearing mounting base of the lower casing, and the right side of lower case is tightened by threaded hole and has eccentric block；Power plant module includes the rotary shaft that rotation is connected in lower case and the motor shaft actuation magnet for being fixed on rotation shaft end；Induction module includes the runing rest for being fixed on rotary shaft upper end, the induced magnet being embedded on runing rest and the circuit board being fixed on inside upper housing, and circuit board is equipped with Hall semiconductor sensing element and single-chip microcontroller.The utility model relates to a kind of bearing velocity sensors, using Hall effect, compared to traditional close to switch, longer life expectancy, precision is higher, and speed-measuring structure is allowed to form closing form, it is not easily susceptible to external interference, mechanism and rotation between centers is tested by motor shaft and is attracted magnet actuation, be easily installed.
Description
Technical field
The utility model relates to sensor fields, and in particular to a kind of bearing velocity sensor.
Background technique
Velocity sensor is the instrument for being capable of measuring the measured object speed of service.Velocity sensor application is very extensive, it can be applied
In production equipment, extraordinary locomotive, wind-power electricity generation etc..Such as plate, tubing cutting on line, cable or sand paper tachometric survey etc..By
It is noncontacting measurement in them, measurement sensitivity or the object that can not be touched are very suitable to, such as flannelette, fur textile, coating
Or adhesive surface, foam rubber surface object test the speed；There are also the controls of the metal-processing industry such as speed, coating process of measurement steel
System etc..
Velocity sensor is generallyd use close to switch in the prior art, is easy to receive external interference, and without forming closing
Structure, therefore be easy to stir into sundries, to reduce measurement accuracy, reduce service life.
Utility model content
Purpose of utility model: providing a kind of bearing velocity sensor, with Hall effect, and by tested mechanism and rotary shaft
Between magnet be attracted by motor shaft be attracted, be easily installed, by sealing riveting between upper housing and lower case, allow speed-measuring structure shape
It at closing form, avoids external impurities and stirs into enclosure interior, to solve the above problem of the existing technology.
Technical solution: a kind of bearing velocity sensor, comprising: housing module, power plant module and induction module three parts.
Wherein, housing module, comprising: upper housing, lower case and setting are in the intracorporal bearing mounting base of the lower casing；
Power plant module, comprising: the rotary shaft and be fixed on the rotation shaft end that rotation is connected in the lower case
Motor shaft be attracted magnet；
Induction module, comprising: the runing rest for being fixed on the rotary shaft upper end, the sense being embedded on the runing rest
The Hall semiconductor sense answering magnet and the circuit board being fixed on inside the upper housing and being welded on the circuit board
Answer element and single-chip microcontroller.
In a further embodiment, the both ends of the rotary shaft are equipped with external screw thread, and the motor shaft is attracted magnet and institute
The inner wall for stating runing rest is equipped with the internal screw thread coincideing with aforementioned external screw thread, is connected through a screw thread mode and rotary shaft screws admittedly
It is fixed, and it is consistent with rotary shaft direction of rotation to screw direction, for realizing self-locking, so that rotation is propped up when rotary shaft high speed rotation
Frame, which is attracted magnet with motor shaft, the more to be turned the more tight.
In a further embodiment, bearing is installed, the bearing and the bearing are installed in the bearing mounting base
Seat interference fit, is used for fixing bearing, undertakes radial load.
In a further embodiment, the right side of the lower case is tightened by threaded hole eccentric block, for certainly
Fixed entire sensor is not rotated with the rotation of rotary shaft, improves the stability of device.
In a further embodiment, sealing riveting is used between the upper housing and lower case, including is arranged described
The rivet of sealant and the connection upper housing and lower case between upper housing and lower case at binding face, for being whole
A device forms enclosed construction, prevents the measurement accuracy for stirring into sundries influence sensor.
In a further embodiment, with the view perpendicular to rotary shaft central axes, the section of the runing rest
For circle, the induced magnet is embedded in close to edge, the pre-position apart from the rotary shaft central axes of runing rest,
When the every rotation of runing rest one week, the induced magnet being embedded on runing rest just passed through a Hall semiconductor sensing element,
Velocity of rotation is calculated according to the pulse of Hall semiconductor sensing element.
In a further embodiment, distance of the Hall semiconductor sensing element away from rotary shaft central axes and aforementioned sense
It answers magnet consistent, when rotary shaft drives the induced magnet rotation being fixed on runing rest, Hall voltage is generated, by Hall half
Conductor sense element senses by single-chip microcontroller recording impulse data and calculate current rotating speed.
The utility model has the advantages that being attracted magnet the utility model relates to a kind of bearing velocity sensor by motor shaft, being easy to pacify
Dress allows speed-measuring structure to form closing form by the riveting between upper housing and lower case, and site safety is high, avoids measuring
When stir into sundries.Using Hall effect, the rotation of magnet is perceived by Hall semiconductor components and devices, obtain pulse, by calculating,
To export revolving speed, stall alert can also be provided by setting speed value；Being arranged that single-chip microcontroller on circuit boards is readable can
It writes, can artificially program the detection accuracy for changing sensor, to cope with different application scenarios, opened compared to traditional approaching
It closes, longer life expectancy, precision is higher, is not easy to receive external interference.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the utility model.
Fig. 2 is the main view of the utility model.
Fig. 3 is the schematic diagram of the utility model runing rest and induced magnet.
Fig. 4 is the schematic diagram of the utility model circuit board.
Fig. 5 is the utility model upper housing and lower case riveting portion schematic diagram.
Each appended drawing reference in figure are as follows: motor shaft is attracted magnet 1, rotary shaft 2, bearing 3, eccentric block 4, lower case 5, rotation branch
Frame 6, upper housing 7, circuit board 8, Hall semiconductor sensing element 801, single-chip microcontroller 802, bearing mounting base 9, induced magnet 10, riveting
Nail 11.
Specific embodiment
In the following description, a large amount of concrete details are given more thoroughly to manage in order to provide to the utility model
Solution.It is, however, obvious to a person skilled in the art that the utility model may not need it is one or more of these thin
It saves and is carried out.In other examples, in order to avoid obscuring with the utility model, for more well known in the art
Technical characteristic is not described.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
As shown in Figure 1 to Figure 3, a kind of bearing velocity sensor, the hereinafter referred to as device.The device is by power plant module, shell
Module and induction module three parts composition.Wherein, power plant module includes rotary shaft 2, and 2 end of rotary shaft is fixed with motor
Axis is attracted magnet 1, and the device is connected to motor by motor shaft actuation magnet 1 and is pull-in on motor axis center；Housing module
Including upper housing 7 and lower case 5, bearing mounting base 9 is equipped in the lower case 5；Induction module includes being fixed on the rotation
The runing rest 6 of 2 upper end of axis is embedded with induced magnet 10 on the runing rest 6, is fixed with circuit inside the upper housing 7
Plate 8.When rotary shaft 2 drives the runing rest 6 to rotate, the induced magnet 10 being embedded on runing rest 6 is also rotated with it,
When electric current is by a conductor being located in magnetic field, magnetic field can generate one to the electronics in conductor and transport perpendicular to electronics
Active force on dynamic direction, to generate potential difference on the both direction perpendicular to conductor and magnetic induction line, this potential difference can
To be recorded by the single-chip microcontroller 802 on circuit board 8, and calculate current rotating speed.
As a preferred embodiment, the both ends of the rotary shaft 2 are equipped with external screw thread, and the motor shaft is attracted magnet 1 and institute
The inner wall for stating runing rest 6 is equipped with the internal screw thread coincideing with aforementioned external screw thread, the motor shaft be attracted magnet 1 and rotary shaft 2 it
Between, the mode that is connected through a screw thread between runing rest 6 and rotary shaft 2 is tightened, and screws the rotation in direction Yu rotary shaft 2
Direction is consistent, the advantage of doing so is that can be realized it is self-locking, i.e., when 2 high speed rotation of rotary shaft, motor shaft be attracted magnet 1 and rotation
It between shaft 2, the more can turn the more tight between runing rest 6 and rotary shaft 2, prevent from falling off in use.
As a preferred embodiment, bearing 3, the bearing 3 and the bearing mounting base 9 are installed in the lower case 5
Interference fit is used for fixing bearing 3, undertakes radial load.
As a preferred embodiment, the right side of the lower case 5 is fixed with eccentric block 4, the eccentric block 4 and lower case 5
Between be connected through a screw thread, when the device measures, real work position be 2 axis direction of rotary shaft be in a horizontal state,
The side of lower case 5 is arranged in eccentric block 4, and eccentric block 4 is consolidated by test of many times in the as lower end under actual measurement state
It is fixed effectively to force down the center of gravity of whole device in the position, it prevents from influencing measurement result because generating shake etc. when measurement.
As a preferred embodiment, sealing riveting is used between the upper housing 7 and lower case 5, including be connected and fixed institute
The rivet 11 of upper housing 7 Yu lower case 5 is stated, is equipped with sealant (not shown) in the upper housing 7 and the joint surface of lower case 5,
For forming enclosed construction for whole device, the measurement accuracy for stirring into sundries influence sensor is prevented, and be convenient for subsequent dismounting.
As a preferred embodiment, the circuit board 8 is equipped with Hall semiconductor sensing element 801 and single-chip microcontroller 802, when
When rotary shaft 2 drives the induced magnet 10 being fixed on runing rest 6 to rotate, Hall voltage is generated, is incuded by Hall semiconductor
Element 801 incudes, 802 recording impulse data of single-chip microcontroller, it is made to detect revolving speed.
As a preferred embodiment, with the view perpendicular to 2 central axes of rotary shaft, the section of the runing rest 6
For circle, the induced magnet 10 is embedded in the edge close to runing rest 6, the positioning apart from 2 central axes of rotary shaft
Place is set, when the every rotation of runing rest 6 one week, is embedded in the induced magnet 10 on runing rest 6 just by a Hall semiconductor
Sensing element 801 calculates velocity of rotation according to the pulse of Hall semiconductor sensing element 801.
Specific working principle and the course of work are as follows: utilizing Hall effect, i.e. carrier in solid material is adding outside
When being moved in magnetic field because by Lorentz force effect and so that track is shifted, and material two sides generate charge accumulated,
The electric field perpendicular to current direction is formed, the Lorentz force for being finally subject to carrier balances each other with electric field repulsion, thus two
A stable potential difference i.e. Hall voltage is set up in side, makes displacement that Hall element be driven to move in magnetic field using Hall effect
Hall electric heating is generated, i.e., displacement signal is converted into electric heating variable signal, to be calculated by single-chip microcontroller 802 according to pulse signal
Current rotating speed.When needing to test the speed to testee, first passes through motor shaft actuation magnet 1 and be attracted testee and rotary shaft 2
Get up, drives rotary shaft 2 to rotate when testee rotates, so that the runing rest 6 being fixed in rotary shaft 2 is driven to rotate, into
And the induced magnet 10 being embedded on the runing rest 6 is driven to rotate, induced magnet 10 is embedded in the side of runing rest 6,
Whenever runing rest 6 turns around, induced magnet 10 just passes through an initial position, the Hall semiconductor being mounted on circuit board 8
Sensing element 801 generates Hall voltage just by a potential difference, the single-chip microcontroller 802 on circuit board 8 is produced according to Hall voltage
Raw frequency calculates the linear velocity of current induced magnet 10 in real time, further according to the pass of linear velocity and 6 radius of runing rest
System, calculates the revolving speed of rotary shaft 2, the revolving speed of rotary shaft 2 is the revolving speed of testee.
As described above, although the utility model has been indicated and described referring to specific preferred embodiment, it must not
It is construed to the limitation to the utility model itself.In the spirit and scope for not departing from the utility model that appended claims define
Under the premise of, it can be made a variety of changes in the form and details.
Claims (7)
1. a kind of bearing velocity sensor, it is characterized in that including:
Housing module, including upper housing, lower case and setting are in the intracorporal bearing mounting base of the lower casing；
Power plant module, including rotating the rotary shaft being connected in the lower case and being fixed on the electricity of the rotation shaft end
Arbor is attracted magnet；
Induction module, including being fixed on the runing rest of the rotary shaft upper end, the induction magnetic being embedded on the runing rest
Iron, the circuit board being fixed on inside the upper housing and the Hall semiconductor sensing element being welded on the circuit board and
Single-chip microcontroller.
2. a kind of bearing velocity sensor according to claim 1, it is characterised in that: the both ends of the rotary shaft are equipped with outer
Screw thread, the motor shaft is attracted magnet and the inner wall of the runing rest is equipped with the internal screw thread coincideing with aforementioned external screw thread, passes through
Thread connecting mode is tightened with rotary shaft, and it is consistent with rotary shaft direction of rotation to screw direction.
3. a kind of bearing velocity sensor according to claim 1, it is characterised in that: be equipped in the bearing mounting base
Bearing, the rotary shaft are inserted into the bearing, between the bearing and the bearing mounting base, interference between bearing and rotary shaft
Cooperation.
4. a kind of bearing velocity sensor according to claim 1, it is characterised in that: pass through spiral shell on the right side of the lower case
Pit, which is tightened, eccentric block.
5. a kind of bearing velocity sensor according to claim 1, it is characterised in that: between the upper housing and lower case
Using sealing riveting, including the sealant between the upper housing and lower case at binding face is arranged in and connects on described
The rivet of shell and lower case.
6. a kind of bearing velocity sensor according to claim 1, it is characterised in that: perpendicular to rotary shaft central axes
View, the section of the runing rest are circle, and the induced magnet is embedded in the edge close to runing rest, apart from institute
State the pre-position of rotary shaft central axes.
7. a kind of bearing velocity sensor according to claim 1, it is characterised in that: the Hall semiconductor sensing element
Distance away from rotary shaft central axes is consistent with aforementioned induced magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822018781.3U CN209198485U (en) | 2018-12-04 | 2018-12-04 | A kind of bearing velocity sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822018781.3U CN209198485U (en) | 2018-12-04 | 2018-12-04 | A kind of bearing velocity sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209198485U true CN209198485U (en) | 2019-08-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822018781.3U Active CN209198485U (en) | 2018-12-04 | 2018-12-04 | A kind of bearing velocity sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN209198485U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112255426A (en) * | 2020-09-15 | 2021-01-22 | 北京烁科精微电子装备有限公司 | Rotating speed detection device and wafer cleaning device with same |
| CN113391086A (en) * | 2021-06-18 | 2021-09-14 | 宁波中车时代传感技术有限公司 | Shaft end rotating speed sensor and manufacturing method thereof |
-
2018
- 2018-12-04 CN CN201822018781.3U patent/CN209198485U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112255426A (en) * | 2020-09-15 | 2021-01-22 | 北京烁科精微电子装备有限公司 | Rotating speed detection device and wafer cleaning device with same |
| CN113391086A (en) * | 2021-06-18 | 2021-09-14 | 宁波中车时代传感技术有限公司 | Shaft end rotating speed sensor and manufacturing method thereof |
| CN113391086B (en) * | 2021-06-18 | 2023-11-03 | 宁波中车时代传感技术有限公司 | Shaft end rotating speed sensor and manufacturing method |
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