CN109959330A - A kind of angular displacement sensor - Google Patents
A kind of angular displacement sensor Download PDFInfo
- Publication number
- CN109959330A CN109959330A CN201711402756.9A CN201711402756A CN109959330A CN 109959330 A CN109959330 A CN 109959330A CN 201711402756 A CN201711402756 A CN 201711402756A CN 109959330 A CN109959330 A CN 109959330A
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- China
- Prior art keywords
- brush
- encoder
- displacement sensor
- angular displacement
- supporting plate
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- 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
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- 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
- G01D5/142—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 using Hall-effect devices
-
- 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
- G01D5/16—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 by varying resistance
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The present invention relates to field of electrical components, in particular to a kind of angular displacement sensor.It includes pedestal and capping, ring rotation brush supporting plate and annular fixinig plate are equipped in the space that the pedestal and capping are formed, fixinig plate is equipped with the ring resistance piece of opening close to rotary brush supporting plate side, the resistor disc open at one end connector is slidably contacted with the connection of conducting wire group, thereon with the first brush, rotary brush supporting plate and the second brush sliding contact；Further include being located at circular encoder track on fixinig plate, be uniformly distributed several encoders in the encoder track, the first brush corresponding with encoder is equipped with sensing element, and the sensing element reads encoder and is converted to encoder output.Angular displacement sensor Effective Electrical Travel range of the invention is big, and circle can reach 360 °, and linear precision is high；Encoder test point is uniformly arranged in fixed plate, and rectifiable angular displacement sensor output as a result, export pulse code signal simultaneously.
Description
Technical field
The present invention relates to field of electrical components, in particular to a kind of angular displacement sensor.
Background technique
Angular displacement sensor is a kind of height for meeting sexual intercourse in function with voltage output and rotation angle or straight-line displacement
Accuracy Displacement sensor is usually used in the Aeronautics and Astronautics such as aerospace device, guided missile, aircraft, weapon system and industrial SERVO CONTROL
In.Its working principle is that electric resistance partial pressure principle, at work, additional positive and negative operating voltage, using 0V point as 0 ° of basic point, effective
Forward and reverse movement in electric stroke range, displacement is proportional with output voltage, realizes the accurate positioning of displacement.In reality
Application in, general angular displacement sensor is effectively measured as 0 °~300 °, and is influenced in resistance by environment and generate change
When change, so that output result is there are biggish error, precision cannot be guaranteed.Existing angular encoder diagonal displacement measurement is more
Accurately, more common for magnetic coder, encoder output is generated according to magnetic field detected, and each encoder directly exists
Its surface generates maximum magnetic field strength.Since external magnetic field is interfered, so that the noise for receiving signal is larger, ferromagnetic material is such as encountered
Angle measurement, in fact it could happen that failure；In addition, manufacturing cost is larger since structure is complicated for magnetic coder, circuit structure is complicated,
It cannot be widely used.Meanwhile the prior art rarely have be related to going by encoder handle and verify displacement sensor
As a result, linear precision is high, the angle with encoding function high reliablity very to needing to design a kind of 360 ° of total travel models in equipment
Displacement sensor.
Summary of the invention
Goal of the invention of the invention is: in view of the above problems, a kind of 360 ° of strokes are provided, linear precision is high,
With the high angular displacement sensor of coding checkout functional reliability.
The technical solution adopted by the invention is as follows:
Ring rotation electricity is equipped in the space that a kind of angular displacement sensor, including pedestal and capping, the pedestal and capping are formed
Brush supporting plate and annular fixinig plate, the rotary brush supporting plate are oppositely arranged with fixinig plate, and the fixinig plate is connect with pedestal, fixed
Piece is equipped with the ring resistance piece of opening close to rotary brush supporting plate side, the resistor disc open at one end connector connect with conducting wire group,
It is slidably contacted with the first brush thereon, first brush connects with the first brush support for being fixed on rotary brush supporting plate side
It connects, rotary brush supporting plate and the second brush sliding contact, the fixed plate is equipped with the second brush support of the second brush of support；
Further include being located at circular encoder track on fixinig plate, several encoders is uniformly distributed in the encoder track, with volume
Code corresponding first brush of device scale is equipped with sensing element, and the sensing element reads encoder and is converted to encoder output
Signal；Second brush is equipped with multichannel contact, and the rotary brush supporting plate is equipped with and matches with the second brush contact
Brush track；The rotary brush supporting plate is rotated with swivel, drives the first brush and sensing element rotation.
Further, bearing is socketed on the inside of the fixed plate, the bearing is socketed on the outside of rotary body.
Further, the pedestal is in Flange-shaped Parts, and periphery is equipped with several fixed holes.
Further, the centre of the resistor disc opening portion is equipped with close to switch, described close to switch and the conducting wire
Group connection, the first brush generate a trigger signal when skipping over close switch.
Further, the radially distributed pattern being made of several zero resistance positions and high resistance position of the encoder,
The sensing element is resistance sensing element, the zero resistance position and high resistance position contacted with sensing element be separately encoded as 0 and
1。
Further, the radially distributed pattern being made of several N pole fields and S pole field of the encoder, institute
Stating sensing element is Hall switch.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1. angular displacement sensor Effective Electrical Travel range of the invention is big, circle can reach 360 °, and touching is reliable, compact-sized,
Linear precision is high；Full-time, full data tracking is carried out to key position simultaneously to feed back；Encoder test point is uniformly arranged fixed plate
On, the output of rectifiable angular displacement sensor passes through counter and reflects accurate rotation where axis as a result, exports pulse code signal simultaneously
Indexing is set.
2. of the invention make fixed plate and axis connection to be measured by bearing, so that sensor setting fastening is steady
It is fixed, it reduces and shakes, service life can be greatly prolonged.
3. connecting by Flange-shaped Parts pedestal with mechanism, the outer surface for the axis of being measured is set, connection is simple and convenient, has
Benefit maintenance replacement.
4. the present invention, the centre of the resistor disc opening portion is equipped with close to switch, axis revolution number meter is recorded, to axis
More week rotation controls there is preferable feedback, while may also set up the service life of the revolution number of axis and overhauling all numbers.
5. the present invention, by the way that the setting of zero resistance position and high resistance position is arranged, so that code device signal acquisition is simple high
Effect, and setting easy to manufacture, it is at low cost；Zero resistance position and high resistance position respectively correspond the 0 and 1 of code device signal, so that electric
Road is simple, stablizes at low cost.
6. the present invention, encoder is radially distributed to have several N pole fields and S pole field for non-contacting inductor,
Rotational life is long.
Fig. 1 is angular displacement sensor structure schematic diagram of the present invention；
Fig. 2 is fixed plate structure schematic diagram；
Fig. 3 is that a kind of resistor chain of encoder lists intention；
Fig. 4 is a kind of pole arrangement schematic diagram of encoder.
Marked in the figure: 1- pedestal, 2- rotary brush supporting plate, 3- fixinig plate, 31- resistor disc, 32- wire guide, 33- connector,
34- close to switch, the second brush of 4-, 41- second point brush support, the first brush of 5-, the first brush of 51- support, 6- export line group,
7- capping, 8- bearing, 9- encoder, 91- sensing element, 92- zero resistance position, 93- high resistance position, 94-N pole field, 95-
S pole field, 10- encoder track, 11- fixed hole.
Specific embodiment
With reference to the accompanying drawing, the present invention is described in detail.
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in Figure 1, 2, what a kind of angular displacement sensor, including pedestal 1 and capping 7, the pedestal 1 and capping 7 were formed
Ring rotation brush supporting plate 2 and annular fixinig plate 3 are equipped in space, the rotary brush supporting plate 2 is oppositely arranged with fixinig plate 3,
Centre is equipped with the gap of 5mm~10mm.The pedestal 1 is in Flange-shaped Parts, and periphery is equipped with several fixed holes 11.Screw passes through
Fixed hole 11 is connect with machine non-rotating part, so that angular displacement sensor is fixed on the machine for the function of being measured.Institute
Fixinig plate 3 is stated with pedestal 1 by being clamped, bolting, bond or be threadedly coupled, so that fixed plate 3 and pedestal 1 and capping 7 are relatively
It is static.The fixinig plate 3 is equipped with the resistor disc 31 of annular opening close to the side of rotary brush supporting plate 2, and the resistor disc 31 is opened
One end connector 33 of mouth is slidably contacted with the connection of conducting wire group 6, resistor disc 31 with the first brush 5.First brush 5 be fixed on
First brush support 51 of 2 side of rotary brush supporting plate connects, and 4 sliding contact of rotary brush supporting plate 2 and the second brush is described solid
Fixed board 3 is equipped with the second brush support 41 of the second brush 4 of support.Certainly, the first brush support 51 and the second brush branch
Elastomeric element is equipped in seat 41, so that the first brush 5 and the second brush 4 and wanted contact surface contact position are good.With the second brush
The conducting wire of 4l connection is connect by wire guide 32 with export line group 6.Resistor disc 31 accesses the size and the of the resistance of measuring circuit
The angle that one brush 5 and an opening are formed is in a linear relationship, i.e. the first brush 5 is since one end, resistance position 0 at this time, angle
It is zero, when the resistance of 5 rotary side of the first brush access is gradually increased, the angle of resistance increase and the rotation of the first brush 5 is in just
Than turning over 360 ° when rotating back into starting point one end.
Further, be equipped in the centre of 31 opening portion of resistor disc close to switch 34, it is described close to switch 34 with
The conducting wire group 6 connects, and the first brush 5 generates a trigger signal when skipping over close switch 34.Therefore, one is crossed in the first brush 5
It week when by close to switch 34, approaches switch 34 and is triggered output information, record the revolution number of axis.
Further, 8 outside of bearing is socketed on the inside of the fixed plate 3, the bearing 8 is socketed on the outside of rotary body.When
External member is so set between bearing and fixed plate, the axis of different-diameter is adapted to, so that angle displacement transducer utensil of the invention
There is extensive adaptability, when installation does not destroy the structure and mechanical property of axis.
The angular displacement sensor further includes being located at circular encoder track 10 on fixinig plate 3, the encoder track 10
On be uniformly distributed several encoders 9, first brush 5 corresponding with encoder 9 is equipped with sensing element 91, the induction
Element 91 reads encoder 9 and is converted to encoder output；Second brush 4 is equipped with multichannel contact, described
Rotary brush supporting plate 2 is equipped with the brush track matched with 4 contact of the second brush, and the brush track is equipped with and communicates biography with contact
Pass electric signal.Therefore the signal that sensing element 91 is read passes through the independent contact being arranged on brush and rail return connection, so that
The signal fed back is not interfere with each other, and substantially increases the independence and stability of signal.The rotary brush supporting plate 2 is revolved with swivel
Turn, the first brush 5 and sensing element 91 is driven to rotate.Encoder 9 can be set as 4 to 120, will not have in 360 ° 90 ° extremely
3 ° are done a label, and the coding on coded level ruler 9 is read when sensing element 91 is by coded level ruler 9.For example, working as encoder
9 when being equipped with 4, only needs label two in encoder 9, such as 00 represents 0 ° 360 °, and 01 represents 90 °, and 10 represent 180 °,
11 represent 270 °.Correction, angle position are compared with the angle of angle linear relationship side two to using resistance in the angle of mark
Displacement sensor, which has, largely resists external interference, improves angle and measurement accuracy occurs.
In the present embodiment, as shown in figure 3, the encoder 9 is radially distributed several zero resistance positions 92 and height electricity
The pattern that position 93 forms is hindered, the sensing element 91 is resistance sensing element, the zero resistance position 92 and high resistance position 93 and sense
The contact of element 91 is answered to be separately encoded as 0 and 1.
In some embodiments, as shown in figure 4, the encoder 9 is radially distributed several N pole fields 94 and S
The pattern that pole field 95 forms, the sensing element 91 are Hall switch.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, is actually not limited thereto.So if those skilled in the art
It is enlightened by it, it is without departing from the spirit of the invention, similar with the technical solution without creatively designing
Mode and embodiment, are within the scope of protection of the invention.
Claims (6)
1. a kind of angular displacement sensor, including pedestal (1) and capping (7), which is characterized in that the pedestal (1) and capping (7) shape
At space in be equipped with ring rotation brush supporting plate (2) and annular fixinig plate (3), the rotary brush supporting plate (2) and fixinig plate
(3) it is oppositely arranged, the fixinig plate (3) connect with pedestal (1), and fixinig plate (3) is equipped with opening close to rotary brush supporting plate (2) side
Ring resistance piece (31), resistor disc (31) the open at one end connector (33) connect with conducting wire group (6), thereon with the first brush
(5) it slidably contacts, first brush (5) connects with the first brush support (51) for being fixed on rotary brush supporting plate (2) side
It connects, rotary brush supporting plate (2) and the second brush (4) sliding contact, the fixed plate (3) are equipped with support the second brush (4)
Second brush support (41)；It further include being located at circular encoder track (10) on fixinig plate (3), on the encoder track (10)
It is uniformly distributed several encoders (9), the first brush (5) corresponding with encoder (9) is equipped with sensing element (91), institute
It states sensing element (91) reading encoder (9) and is converted to encoder output；Second brush (4) is equipped with multi-pass
Road contact, the rotary brush supporting plate (2) are equipped with the brush track matched with the second brush (4) contact；The rotary brush
Supporting plate (2) is rotated with swivel, drives the first brush (5) and sensing element (91) rotation.
2. angular displacement sensor according to claim 1, which is characterized in that be socketed with bearing on the inside of the fixed plate (3)
(8), the bearing (8) is socketed on the outside of rotary body.
3. angular displacement sensor according to claim 1, which is characterized in that the pedestal (1) is in Flange-shaped Parts, and periphery is set
There are several fixed holes (11).
4. angular displacement sensor according to claim 1, which is characterized in that the centre of resistor disc (31) opening portion is set
Have close to switch (34), described to connect close to switch (34) with the conducting wire group (6), the first brush (5) is skipped over close to switch
(34) trigger signal is generated when.
5. angular displacement sensor according to claim 1, which is characterized in that the encoder (9) is radially distributed to be had
The pattern of several zero resistance positions (92) and high resistance position (93) composition, the sensing element (91) is resistance sensing element, described
Zero resistance position (92) and high resistance position (93) are contacted with sensing element (91) to be separately encoded as 0 and 1.
6. angular displacement sensor according to claim 1, which is characterized in that the encoder (9) is radially distributed to be had
The pattern of several N pole fields (94) and S pole field (95) composition, the sensing element (91) are Hall switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711402756.9A CN109959330A (en) | 2017-12-22 | 2017-12-22 | A kind of angular displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711402756.9A CN109959330A (en) | 2017-12-22 | 2017-12-22 | A kind of angular displacement sensor |
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| Publication Number | Publication Date |
|---|---|
| CN109959330A true CN109959330A (en) | 2019-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711402756.9A Pending CN109959330A (en) | 2017-12-22 | 2017-12-22 | A kind of angular displacement sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536865A (en) * | 2020-05-09 | 2020-08-14 | 浙江芯球智能科技有限公司 | A device that can be used to precisely measure the angle of rotation |
| CN112985472A (en) * | 2021-05-21 | 2021-06-18 | 深圳清华大学研究院 | Contact type ultra-smooth encoder |
| CN112994365A (en) * | 2021-02-24 | 2021-06-18 | 长安大学 | Motor resistance type rotor position detection device and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106684662A (en) * | 2017-01-22 | 2017-05-17 | 苏州元谋智能机器人系统有限公司 | Conductive slip ring for measuring absolute rotation angle |
| CN206291849U (en) * | 2016-12-22 | 2017-06-30 | 四川永星电子有限公司 | A kind of Precise Angular Displacement Sensor |
-
2017
- 2017-12-22 CN CN201711402756.9A patent/CN109959330A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206291849U (en) * | 2016-12-22 | 2017-06-30 | 四川永星电子有限公司 | A kind of Precise Angular Displacement Sensor |
| CN106684662A (en) * | 2017-01-22 | 2017-05-17 | 苏州元谋智能机器人系统有限公司 | Conductive slip ring for measuring absolute rotation angle |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536865A (en) * | 2020-05-09 | 2020-08-14 | 浙江芯球智能科技有限公司 | A device that can be used to precisely measure the angle of rotation |
| CN112994365A (en) * | 2021-02-24 | 2021-06-18 | 长安大学 | Motor resistance type rotor position detection device and method |
| CN112985472A (en) * | 2021-05-21 | 2021-06-18 | 深圳清华大学研究院 | Contact type ultra-smooth encoder |
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Application publication date: 20190702 |