CN207585547U - A kind of rotation angle measurement structure - Google Patents
A kind of rotation angle measurement structure Download PDFInfo
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- CN207585547U CN207585547U CN201721627459.XU CN201721627459U CN207585547U CN 207585547 U CN207585547 U CN 207585547U CN 201721627459 U CN201721627459 U CN 201721627459U CN 207585547 U CN207585547 U CN 207585547U
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- rotor case
- reflection type
- read head
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Abstract
A kind of rotation angle measurement structure, it is therefore an objective to the miniaturization of motor and code-disc system is realized, in order to be applied in compact-sized device.Rotation angle measurement structure includes groove rotor case, reflection type photoelectricity read head, groove rotor case is fixed on the rotor of motor, reflection type photoelectricity read head is located at groove rotor case axially or radially position, when rotor drives the movement of groove rotor case, the continuous variation that reflection type photoelectricity read head will read groove, according to the number of variation, the angle of rotor rotation can be calculated.It is integrated with rotor that the structure realizes traditional form code-disc, system bulk is greatly reduced, specially with technique, cost etc..
Description
Technical field
The present invention relates to a kind of rotation angle measurement structure, specifically a kind of angle measuring sensor structure is related to
The technical field arrived is sensor field.
Background technology
For motor servo control, important sensor is motor angle sensor, includes light by the way of at present
Electric-type angular transducer, magnetic coding type angular transducer, rotation pressure swing type angular transducer etc..
Wherein, photo-electric angle sensor has the characteristics that relevant block, but high-precision photo-electric angle sensor or
The photo-electric angle sensor price of person's absolute type is relatively expensive, at present, the general photo-electric angle sensor for using increment type
It is in the majority, and need the installation and placement of reserved larger space realization photo-electric angle sensor；Magnetic coding type angular transducer is
Motor angle information is obtained by Hall effect, advantage is small, is easy to make absolute type angular transducer, shortcoming is anti-
There should be delay, be influenced greatly by magnetic interference；It is to obtain angle using the principle of inverse electromotive force to rotate pressure swing type angular transducer
Information is spent, due to structure bulky and complexity, application scenarios are less at present, and most of application scenarios are by magnetic coding type angle sensor
Device replaces.
Utility model content
In view of the above-mentioned problems, the purpose of the present invention is to provide a kind of compact-sized, lower-cost angle measurement structures
Mode can have faster reaction speed, and small, it is easy to accomplish.Rotation angle measurement structure includes groove rotor
Shell, reflection type photoelectricity read head, groove rotor case are fixed on the rotor of motor, and reflection type photoelectricity read head is located at groove rotor case diameter
To and axial position, when rotor drives the movement of groove rotor case, reflection type photoelectricity read head will read the continuous of groove
Variation according to the number of variation, can calculate the angle of rotor rotation.The structure realizes traditional form code-disc and motor
System bulk is greatly reduced, specially with technique, cost etc. in the integration of rotor.
To achieve these goals, the present invention is using following technical scheme, and is carried out by taking a kind of typical embodiment as an example
Explanation.Following embodiment contributes to those skilled in the art to further understand the utility model, but does not limit in any form
The utility model.It should be pointed out that those of ordinary skill in the art, in the premise for not departing from the utility model design
Under, various modifications and improvements can be made.These belong to scope of protection of the utility model.
A kind of rotation angle measurement structure, including groove rotor case (1), reflection type photoelectricity read head (2)；Wherein groove rotor
Shell (1) is fixed on the rotor of motor, and reflection type photoelectricity read head (2) is fixed on circuit board (3)；Outside groove rotor case (1)
There is axial direction or radial direction groove on shell；Reflection type photoelectricity read head (2) is different when reading at groove from non-groove
Value, when rotor drives groove rotor case (1) to move, reflection type photoelectricity read head (2) reading value constantly changes, according to variation
Number, can calculate rotor rotation angle.
Groove rotor case (1) groove number of turns can be a circle groove, can also be carved with multi-turn groove, and each circle groove corresponds to one
Reflection type photoelectricity read head (2).
Groove can be only engraved in groove rotor case (1) in the radial direction by groove rotor case (1)；Groove can be only engraved in
On the axial direction of line rotor case (1)；It also can be by groove in the same time in the axial direction and radial direction of groove rotor case (1)
On.
Advantages of the present invention and advantageous effect are：
1. the present invention can make system structure compact, reduce cost, and be easily achieved, can be applied to it is a variety of with volume will
In the device asked.
2. the present invention is the detection based on photovoltaic, there is rapid reaction.
Description of the drawings
Fig. 1 is the schematic diagram of the axial groove mode of a circle of the present invention；
Fig. 2 is the schematic diagram of the multi-turn axial direction groove mode of the present invention；
Fig. 3 is the multi-turn axial direction groove of the present invention and the schematic diagram of radial direction groove mode；
In figure, 1 is groove rotor case；2 be reflection type photoelectricity read head；3 be circuit board.
Specific embodiment
The utility model is described in further detail with a kind of embodiment below in conjunction with the accompanying drawings.It is to be appreciated that
The utility model is not limited to above-mentioned specific embodiment, and those skilled in the art can make various within the scope of the claims
Deformation and modification, this has no effect on the substantive content of the utility model.
The present invention is described in further detail with reference to the accompanying drawings and examples.
As shown in Figure 1 and Figure 2, a kind of rotation angle measurement structure provided by the invention, it is therefore an objective to realize the small of code-disc system
Type, in order to be applied in compact-sized device.Rotation angle measurement structure includes groove rotor case, reflection type photoelectricity is read
Head, groove rotor case are fixed on the rotor of motor, and reflection type photoelectricity read head is located at the radial and axial position of groove rotor case, when
When rotor drives the movement of groove rotor case, continuous variation that reflection type photoelectricity read head will read groove, according to variation
Number can calculate the angle of rotor rotation.It is integrated with rotor that the structure realizes traditional form code-disc, greatly
It is big to reduce system bulk, specially with technique, cost etc..
A kind of rotation angle measurement structure, including groove rotor case 1, reflection type photoelectricity read head 2；Wherein groove rotor case 1
It is fixed on the rotor of motor, reflection type photoelectricity read head 2 is fixed on circuit board 3；Have on the shell of groove rotor case 1 axial
Direction or radial direction groove；It is different value when reflection type photoelectricity read head 2 is read at groove at non-groove, when rotor band
When dynamic groove rotor case 1 moves, 2 reading value of reflection type photoelectricity read head constantly changes, and according to the number of variation, can calculate motor
The angle of rotor rotation.
As depicted in figs. 1 and 2, the 1 groove number of turns of groove rotor case can be a circle groove, can also be carved with multi-turn groove, each
It encloses groove and corresponds to a reflection type photoelectricity read head 2.
As shown in Figure 3, groove can be only engraved in groove rotor case 1 in the radial direction by groove rotor case 1；It can be by groove
It is only engraved on the axial direction of groove rotor case 1；It also can be by groove in the same time in the axial direction of groove rotor case 1 and radial direction side
Upwards.
Claims (3)
1. a kind of rotation angle measurement structure, which is characterized in that including groove rotor case (1), reflection type photoelectricity read head (2)；Its
Middle groove rotor case (1) is fixed on the rotor of motor, and reflection type photoelectricity read head (2) is fixed on circuit board (3)；Groove rotor
There is axial direction or radial direction groove on the shell of shell (1).
A kind of 2. rotation angle measurement structure according to claim 1, which is characterized in that the groove rotor case (1)
The groove number of turns for one circle or multi-turn, it is each circle groove correspond to a reflection type photoelectricity read head (2).
3. a kind of rotation angle measurement structure according to claim 1, which is characterized in that groove is only engraved in groove rotor case
(1) in the radial direction or groove is only engraved on the axial direction of groove rotor case (1) or groove is in the same time in groove rotor
The axial direction of shell (1) and in the radial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721627459.XU CN207585547U (en) | 2017-11-29 | 2017-11-29 | A kind of rotation angle measurement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721627459.XU CN207585547U (en) | 2017-11-29 | 2017-11-29 | A kind of rotation angle measurement structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207585547U true CN207585547U (en) | 2018-07-06 |
Family
ID=62734409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721627459.XU Active CN207585547U (en) | 2017-11-29 | 2017-11-29 | A kind of rotation angle measurement structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207585547U (en) |
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2017
- 2017-11-29 CN CN201721627459.XU patent/CN207585547U/en active Active
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