CN108613687A - angle detector structure - Google Patents
angle detector structure Download PDFInfo
- Publication number
- CN108613687A CN108613687A CN201810823440.5A CN201810823440A CN108613687A CN 108613687 A CN108613687 A CN 108613687A CN 201810823440 A CN201810823440 A CN 201810823440A CN 108613687 A CN108613687 A CN 108613687A
- Authority
- CN
- China
- Prior art keywords
- piezoelectric ceramics
- angle detector
- driving circuit
- shell
- detector structure
- 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.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The present invention provides a kind of angle detector structures, which is characterized in that including main control chip, main shaft, shell, circuit board mount, wiring board, processing chip, encoder code disc, piezoelectric ceramics, driving circuit and temperature sensor；The main control chip is electrically connected with the driving circuit, the piezoelectric ceramics and the temperature sensor, the temperature that the main control chip is used to be detected according to the temperature sensor controls the voltage that the driving circuit changes the piezoelectric ceramics both ends, to control the length along main shaft axial direction of the piezoelectric ceramics.
Description
Technical field
The present invention relates to field of precision measurement, more particularly to a kind of angle detector structure.
Background technology
Angle detector is a kind of sensor for the detection of high-accuracy rotation angle, on being normally applied, due to temperature
Variation, will cause encoder main shaft and circuit board mount to expand deformation.At this time being bonded in causes on encoder main shaft
Encoder code disc and installation and the relative distance of the wiring board on circuit board mount will shift, and distance between the two is
Determine a key factor of code device signal quality.The signal quality of the sine wave of generation will influence the positional precision of feedback,
Therefore, temperature change will cause the positional precision of encoder feedback to change.
Therefore, the prior art is defective, needs to improve.
Invention content
The embodiment of the present invention provides a kind of angle detector structure, can be with the accuracy in detection of angle detector structure.
The embodiment of the present invention provides a kind of angle detector structure, including main control chip, main shaft, shell, circuit board mount,
Wiring board, processing chip, encoder code disc, piezoelectric ceramics, driving circuit and temperature sensor；
The main shaft includes the outer barrel and inner tube of coaxial arrangement, and one end of said inner tube and the inner bottom wall of the outer barrel connect
Connect, the other end grafting of said inner tube in the housing, one end of the shell be plugged on said inner tube and the outer barrel it
Between gap in, said inner tube is connect far from one end of the outer barrel with the encoder code disc；The circuit board mount is set
It is placed on the inner wall of one end far from the outer barrel of the shell, one end far from the outer barrel of the circuit board mount is set
It is equipped with mounting groove, one end of the piezoelectric ceramics is mounted in the mounting groove, the other end of the piezoelectric ceramics and the line
The connection of road plate, the processing chip be set to the one side of the direction encoder code disc of the wiring board and with the encoder
Code-disc is opposite, and the temperature sensor is set on the main shaft；It is coated with heat insulating coat in the outside wall surface of the main shaft；
The main control chip is electrically connected with the driving circuit, the piezoelectric ceramics and the temperature sensor,
The temperature that the main control chip is used to be detected according to the temperature sensor controls the driving circuit and changes the piezoelectric ceramics
The voltage at both ends, to control the length along main shaft axial direction of the piezoelectric ceramics.
Description of the drawings
Fig. 1 is the structural schematic diagram of the angle detector structure in the embodiment of the present invention.
Fig. 2 is the structural schematic diagram of the main shaft of the angle detector structure in the embodiment of the present invention.
Fig. 3 is the structural schematic diagram of the shell of the angle detector structure in the embodiment of the present invention.
Specific implementation mode
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, do not indicate or imply the indicated device or element must have a particular orientation, with spy
Fixed azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are only used for
Purpose is described, relative importance is not understood to indicate or imply or implicitly indicates the quantity of indicated technical characteristic.
" first " is defined as a result, the feature of " second " can explicitly or implicitly include one or more feature.
In description of the invention, the meaning of " plurality " is two or more, unless otherwise specifically defined.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be to be electrically connected or can mutually communicate to be mechanical connection；It can be directly connected, it can also be by between intermediary
It connects connected, can be the interaction relationship of the connection or two elements inside two elements.For the ordinary skill of this field
For personnel, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or "lower"
It may include that the first and second features are in direct contact, can also not be to be in direct contact but pass through it including the first and second features
Between other characterisation contact.Moreover, fisrt feature second feature " on ", " top " and " above " include first special
Sign is right over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include fisrt feature immediately below second feature and obliquely downward, or be merely representative of
Fisrt feature level height is less than second feature.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the present invention.In order to
Simplify disclosure of the invention, hereinafter the component of specific examples and setting are described.Certainly, they are merely examples, and
And it is not intended to limit the present invention.In addition, the present invention can in different examples repeat reference numerals and/or reference letter,
This repetition is for purposes of simplicity and clarity, itself not indicate between discussed various embodiments and/or setting
Relationship.In addition, the present invention provides various specific techniques and material example, but those of ordinary skill in the art can be with
Recognize the application of other techniques and/or the use of other materials.
Fig. 1 is please referred to, the embodiment of the present invention provides a kind of angle detector structure, including main control chip, shell 10, main shaft
20, circuit board mount 30, encoder code disc 40, piezoelectric ceramics 50, driving circuit, temperature sensor, processing chip 60, wiring board
70, elastomeric isolation set 80.
Wherein, referring to Fig. 2, which includes the outer barrel 21 and inner tube 22 of coaxial arrangement, and inner tube 22 is in circle
Tubulose, the outer barrel 21 are cylindrical.One end of the inner tube 22 is connect with the inner bottom wall of the outer barrel 21, and the other end of the inner tube 22 is inserted
It is connected in shell 10.One end of shell 10 is plugged in the gap between inner tube 22 and outer barrel 21, the separate outer barrel 21 of inner tube 22
One end connect with encoder code disc 40；Circuit board mount 30 is set to the inner wall of one end of separate institute's outer barrel 21 of shell 10
On, one end of the separate outer barrel 21 of circuit board mount 30 is provided with mounting groove, and one end of piezoelectric ceramics 50 is mounted on the installation
In slot, the other end of the piezoelectric ceramics 50 is connect with the wiring board 70, and the processing chip 60 is set to the wiring board
The one side of the 70 direction encoder code disc 40 is simultaneously opposite with the encoder code disc 40, and the temperature sensor is set to institute
It states on main shaft.The mutual elasticity of madial wall of the lateral wall and the shell 10 of elastomeric isolation set 80 is supported.The outside wall surface of the main shaft
On be coated with heat insulating coat.And the main shaft is identical with the rate of expanding with heat and contract with cold of circuit board mount.
Wherein, which is connect with the encoder code disc 40 using binder.
Wherein, main control chip is electrically connected with the driving circuit, the piezoelectric ceramics and the temperature sensor,
The temperature that the main control chip is used to be detected according to the temperature sensor controls the driving circuit and changes the piezoelectric ceramics
The voltage at both ends, to control the length along main shaft axial direction of the piezoelectric ceramics.
Wherein, which sets according to the coefficient of expansion of the main shaft 20 and circuit board mount 30 being affected by temperature
A fixed function is supplied to piezoelectric ceramics 50 according to the function when receiving the temperature of temperature sensor detection to control
Voltage swing, to control the length of piezoelectric ceramics 50.When temperature is higher, and main shaft 20 and circuit board mount 30 expand, pressure
The length of electroceramics 50 is smaller.When temperature is relatively low, when main shaft 20 and circuit board mount 30 are shunk, the length of piezoelectric ceramics 50 compared with
Greatly.So that the testing result of angle detector structure is not acted upon by temperature changes, so as to improve the accurate of detection
Degree.
The main shaft 20, circuit board mount 30 are made of identical material so that its effect having the same of expanding with heat and contract with cold.
Specifically, which is in ladder tubulose.Circuit board mount 30 is connected through a screw thread with the shell 10.Or
Person, circuit board mount 30 are connected with the interference fit of the shell 10.
Circuit board mount 30 includes the first connecting tube 31 and the second connecting tube 32 for being connected with each other and being coaxially disposed, described
The radius of first connecting tube 31 is more than the radius of second connecting tube 32, and first connecting tube 31 connects with the shell 10
It connects, pre-determined distance is spaced between second connecting tube 32 and the madial wall of the shell 10；The mounting groove is set to the second company
On one end far from first connecting tube 31 of take over 32.
Referring to Fig. 3, shell 10 includes the connection of third connecting tube 11 and the 4th for being connected with each other and being coaxially disposed
One end of pipe 22, the third connecting tube 11 of shell 10 is plugged in the gap between inner tube 22 and outer barrel 21.
In some embodiments, angle detector structure further includes first electrode layer and the second electrode lay.First electrode
Layer is set on the bottom wall of the mounting groove on circuit board mount 30, and the second electrode lay is set on wiring board 70, the drive
Dynamic circuit is electrically connected with the first electrode layer and the second electrode lay respectively, the first electrode layer and the second electrode lay point
It is not electrically connected with the both ends of the piezoelectric ceramics 50.First electrode layer and the second electrode lay are silver-coated electrode layer.
In some embodiments, the quantity of mounting groove is two, and the piezoelectric ceramics 50 is two and difference
It is in the form of a column.
In some embodiments, the quantity of mounting groove is one, and the quantity of the piezoelectric ceramics 50 is 1, the installation
Slot is annular in shape, and the piezoelectric ceramics 50 is annular in shape.
In some embodiments, it is provided with limit on the end face of one end of the direction of the circuit board mount wiring board 70
It sells, is provided with limit hole on the corresponding wiring board, which can axially slidably be plugged on limit along limit hole
Kong Zhong, to realize the limit to wiring board.
In the description of this specification, reference term " embodiment ", " certain embodiments ", " schematically implementation
What the description of mode ", " example ", " specific example " or " some examples " etc. meant to describe in conjunction with the embodiment or example
Particular features, structures, materials, or characteristics are contained at least one embodiment or example of the present invention.In this specification
In, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, the specific spy of description
Sign, structure, material or feature can be combined in any suitable manner in any one or more embodiments or example.
In conclusion although the present invention is disclosed above with preferred embodiment, above preferred embodiment is not to limit
The system present invention, those skilled in the art can make various changes and profit without departing from the spirit and scope of the present invention
Decorations, therefore protection scope of the present invention is subject to the range that claim defines.
Claims (8)
1. a kind of angle detector structure, which is characterized in that including main control chip, main shaft, shell, circuit board mount, wiring board,
Processing chip, encoder code disc, piezoelectric ceramics, driving circuit and temperature sensor；
The main shaft includes that the outer barrel of coaxial arrangement and inner tube, one end of said inner tube are connect with the inner bottom wall of the outer barrel,
In the housing, one end of the shell is plugged between said inner tube and the outer barrel for the other end grafting of said inner tube
In gap, one end far from the outer barrel of said inner tube is connect with the encoder code disc；The circuit board mount is set to
On the inner wall of one end far from the outer barrel of the shell, one end far from the outer barrel of the circuit board mount is provided with
One end of mounting groove, the piezoelectric ceramics is mounted in the mounting groove, the other end of the piezoelectric ceramics and the wiring board
Connection, the processing chip be set to the one side of the direction encoder code disc of the wiring board and with the encoder code disc
Relatively, the temperature sensor is set on the main shaft；It is coated with heat insulating coat in the outside wall surface of the main shaft；And the main shaft
It is identical with the rate of expanding with heat and contract with cold of circuit board mount；
The main control chip is electrically connected with the driving circuit, the piezoelectric ceramics and the temperature sensor, described
The temperature that main control chip is used to be detected according to the temperature sensor controls the driving circuit and changes the piezoelectric ceramics both ends
Voltage, to control the length along main shaft axial direction of the piezoelectric ceramics.
2. angle detector structure according to claim 1, which is characterized in that further include elastomeric isolation set, the elasticity
Separation sleeve is socketed in said inner tube and is inserted on one end of the shell, and the lateral wall that the elastomeric isolation covers is interior with the shell
The mutual elasticity of side wall is supported.
3. angle detector structure according to claim 1, which is characterized in that the shell is in ladder tubulose.
4. angle detector structure according to claim 1, which is characterized in that the circuit board mount includes being connected with each other
And the first connecting tube and the second connecting tube of coaxial arrangement, the radius of first connecting tube are more than second connecting tube
Radius, first connecting tube and the cage connection are spaced pre- between second connecting tube and the madial wall of the shell
If distance；
The mounting groove is set on one end far from first connecting tube of second connecting tube.
5. angle detector structure according to claim 1, which is characterized in that further include first electrode layer and the second electricity
Pole layer, the first electrode layer are set on the bottom wall of the mounting groove, and the second electrode lay is set on the wiring board,
The driving circuit is electrically connected with the first electrode layer and the second electrode lay respectively, the first electrode layer and the second electricity
Pole layer is electrically connected with the both ends of the piezoelectric ceramics respectively.
6. angle detector structure according to claim 5, which is characterized in that the driving circuit include control chip with
And driving circuit, the control chip and driving circuit may be contained on the wiring board, the control chip and the drive
Dynamic circuit electrical connection, the driving circuit are electrically connected with the first electrode layer and the second electrode lay.
7. angle detector structure according to claim 1, which is characterized in that the quantity of the mounting groove is two, institute
Piezoelectric ceramics is stated to be two and be in the form of a column respectively.
8. angle detector structure according to claim 1, which is characterized in that the quantity of the mounting groove is one, institute
The quantity for stating piezoelectric ceramics is 1, and the mounting groove is annular in shape, and the piezoelectric ceramics is annular in shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810823440.5A CN108613687A (en) | 2018-07-25 | 2018-07-25 | angle detector structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810823440.5A CN108613687A (en) | 2018-07-25 | 2018-07-25 | angle detector structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108613687A true CN108613687A (en) | 2018-10-02 |
Family
ID=63666731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810823440.5A Withdrawn CN108613687A (en) | 2018-07-25 | 2018-07-25 | angle detector structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108613687A (en) |
-
2018
- 2018-07-25 CN CN201810823440.5A patent/CN108613687A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181002 |