CN206160925U - Constant-speed rotary non-contact linear displacement sensor - Google Patents
Constant-speed rotary non-contact linear displacement sensor Download PDFInfo
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- CN206160925U CN206160925U CN201620831452.9U CN201620831452U CN206160925U CN 206160925 U CN206160925 U CN 206160925U CN 201620831452 U CN201620831452 U CN 201620831452U CN 206160925 U CN206160925 U CN 206160925U
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- soft iron
- iron block
- constant speed
- fixed
- slide block
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 33
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 118
- 229910052742 iron Inorganic materials 0.000 claims abstract description 59
- 238000007493 shaping process Methods 0.000 claims abstract description 22
- 230000000737 periodic effect Effects 0.000 claims abstract description 15
- 230000003321 amplification Effects 0.000 claims description 17
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 17
- 230000000694 effects Effects 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 6
- 230000001960 triggered effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000004907 flux Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
A constant-speed rotary non-contact linear displacement sensor. A motor rotating at a constant speed drives two small wheels M1M2 on the same plane to rotate anticlockwise at a constant speed V simultaneously under the action of a track, a soft iron bulge on the track periodically and circularly moves at the constant speed V along the surface of the track and presents periodic constant-speed linear motion within the maximum distance L between the two small wheels, a sliding rod is arranged above the periodic constant-speed linear motion track presented by the soft iron on the track and is parallel to the periodic constant-speed linear motion track of the soft iron, one end of the sliding rod is fixed with a magnetoelectric sensor, the other end of the sliding rod is provided with a sliding block which can freely move left and right along the sliding rod and serves as a linear displacement sensor, the output end of each group of magnetoelectric linear displacement sensors is respectively connected with the input ends of a corresponding amplifying/shaping circuit of a pre-branch, the output end of each group of amplifying and shaping circuit is respectively connected with the two input, the output end of the OR gate is connected to the trigger end of the D flip-flop working in the bistable state, and the Q end of the D flip-flop is the final output end.
Description
Technical field
The utility model is related to a kind of mechanical straight-line displacement sensing device, and especially by the motor of constant speed rotary soft iron is made
The motion triggers for producing periodicity uniform rectilinear's displacement are operated in bistable d type flip flop upset, and with d type flip flop output switching activity
The size of pulsewidth T of pulse voltage is reflecting the sensor of displacement.
Background technology
In the market there is many defects, resistance scale sheet using cost performance highest linear displacement transducer resistance scale
It is a slide rheostat in matter, at the resistance guide rail two ends of resistance scale constant voltage is added, the brush on slide block is in resistance
Slide on guide rail, and the change of the position with slide block brush in resistance guide rail is changing the size of intrinsic standoff ratio, so as to realize coming
From the relation of the linear change of the change and change in location size of the slide block brush in resistance guide rail of slide block output voltage size,
It is finally reached the purpose of straight-line displacement measurement.First the brush of electronic ruler must closely be affixed with resistance guide rail surface, and phase
The tightness degree of patch affects contact resistance size so as to cause output display numeral bounce, and this there is installs asking for neutrality degree
Topic, if installing, neutrality degree is undesirable, this allows for slide block sliding process center brush and resistance guide rail on resistance guide rail
Surface tightness degree changes, and its contact resistance also changes therewith, has a strong impact on output linearity degree.And brush and resistive element
There is serious friction abrasion in surface, not only straight limit displacement measurement speed, and because prolonged serious wear affects it
Service life.Resistance scale during long-time use, because aging and sealing problem causes internal brush and resistance guide rail meter
Face can also affect its contact resistance to cause the problem of measuring accuracy into substantial amounts of dust and its other impurities.
The content of the invention
In order to solve the deficiency of above-mentioned resistance scale, the utility model provides brand-new straight-line displacement sensing device, not only
Solve the problems, such as that conventional, electric-resistance chi installs neutrality degree and causes its brush and resistance guide rail contact Resistance Influence output linearity degree, more
It is important that solving the brush of conventional, electric-resistance chi and resistance guide rail surface has serious contact wear, not only having a strong impact on it makes
With life-span and the problem of straight limit displacement measurement speed.
The utility model solves the technical scheme that its technical problem adopted：Using two diameter identical steamboat M1 and
M2, and two steamboats are in the same plane, the distance that same crawler belt, M1 and M2 are cased with M1 and M2 surfaces is maintained at L and makes
Obtain crawler belt two straight lines to be presented up and down and keeps being parallel to each other, a soft iron block is placed with crawler belt（It is raised）, effect is triggering magnetic
Electric-type sensor, according to counterclockwise, with the rotation of constant speed V, steamboat M2 is by crawler belt in M1 by the motor driving of a constant revolution for M1
Drive under according to identical speed counterclockwise with the rotation of constant speed V, soft iron block on crawler belt keeps constant speed V along crawler belt table
Face moves in periodic cycle, and present on upper crawler belt with constant speed V L apart from it is interior be periodicity uniform rectilinear fortune
Dynamic, the translational speed that its speed for moving will be significantly larger than linear displacement transducer slide block has foot in order to linear displacement transducer
Enough response times.Have above upper crawler belt a slide bar and with upper crawler belt keeping parallelism, and between upper crawler belt most
Big distance is maintained at soft iron block can be triggered in the ultimate range that magnetoelectric sensor can be responded.One is fixed with the B ends of slide bar
Individual irremovable magnetoelectric sensor, its A end have another can on slide bar the magnetoelectric sensor that moves freely of left and right,
Effect acts as the slide block of linear displacement transducer.This slide block（Magnetoelectric sensor）The track moved left and right on slide bar is with
Soft iron block periodicity uniform rectilinear motion track on crawler belt keeps parallel to each other.The output end difference of two groups of magnetoelectric sensors
It is connected with corresponding amplification/shaping circuit input, soft iron block triggers every group of magnetoelectric sensor institute in moving process
The voltage for inducing after the effect for amplifying shaping for corresponding to amplifications/shaping circuit therewith by becoming to have certain output amplitude and be in
Two groups of inputs of OR circuit, the output end of OR gate and the triggering end CLK phase of d type flip flop are sent to after the pulse voltage of existing rule
Even, d type flip flop is operated in bistable state state, and the pulsewidth width T sizes of its Q end voltage pulse output u0 are output shift quantity
Parameter.The effect of OR circuit is its output end UC when soft iron block forms trigger voltage when through every group of magnetoelectric sensor
All by low electric 0 flat turn it is high level 1 and triggers D tentaculums and overturn.D type flip flop Q ends present low electricity when assuming original state
Flat 0, when steamboat M1 drives steamboat M2 simultaneously according to counterclockwise with identical constant speed V turn under motor driving and by crawler belt
It is dynamic, the soft iron block on crawler belt also with same constant speed V along whole track surface cycle movement when reach B end fixations can not
During mobile magnetoelectric sensor lower section and induced voltage is induced, this pulse voltage becomes after amplification and rectification circuit process
Regular trigger voltage u1 with certain amplitude is sent to OR circuit input UA, and OR circuit output end UC is by low electric 0 flat turn
For high level 1 and trigger d type flip flop upset, its output Q ends high level 1 is switched to by low level 0 and keeps constant.With soft iron block
Continue constant speed movement to the left, until moving to slide block（Another magnetoelectric sensor that can be moved left and right on slide bar）Lower section
When will induce voltage and be amplified after shaping by another group of amplification/shaping circuit formed another have certain amplitude rule
Trigger voltage u2 and be sent to the input UB of OR circuit, OR circuit output end UC switchs to high level by low level 0 again
1, now d type flip flop overturn again, its Q end switchs to low level 0 and keeps constant by high level 1.When straight-line displacement sensing
When moving freely, d type flip flop overturns pulsewidth T and two groups of magneto-electrics of formed pulse voltage to the slide block of device for left and right on slide bar
Relative distance between sensor is presented direct ratio change, and most at last displacement switchs to the change of pulse voltage width parameter T, reaches
The purpose of contactless straight-line displacement measurement.
The beneficial effects of the utility model are：Slide block（One group of magnetoelectric sensor that can be moved left and right on slide bar）With
Track surface is done between the soft iron block of periodicity linear uniform motion without any contact, thus do not exist conventional, electric-resistance chi brush with
Contact wear between resistance guide rail surface limits measuring speed and affects the problem of its service life, greatly improves straight-line displacement
The service life and straight-line displacement measuring speed of sensor, because soft iron block is protected in whole cycle uniform rectilinear's moving process
Constant speed is held, and its translational speed is significantly larger than slide block magnetoelectric sensor and speed is moved left and right on slide bar, ensures that
There is good repeatability and sufficiently fast response time in whole straight-line displacement measurement process.Two magnetoelectric sensor institutes are defeated
Go out pulse voltage triggering be operated in bistable d type flip flop upset and with D send out device upset formation pulse voltage pulsewidth T
Width reflecting the change of displacement, reflect that displacement is compared with output voltage size variation with conventional, electric-resistance chi and solve
It installs neutrality degree affects impact of the contact resistance variation between its brush and resistance guide rail to output voltage, causes straight line position
The problem of the accuracy of shift measurement.Even if causing track surface into a large amount of dusts and other impurities because long-time use,
Otherwise triggering of the soft iron block to two groups of magnetoelectric sensors is affected, the accuracy of its measurement result finally still can not be affected.
Description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is schematic diagram of the present utility model
Fig. 2 is two magnetoelectric sensor structure charts in the utility model
Fig. 3 is utility model works principle schematic
1. is the steamboat M1 of motor direct drive in figure, 2. Jing straight with M1 it is identical and with M1 at steamboat in the same plane
M2,3. descends crawler belt, 4. goes up crawler belt, 5. soft iron block, 6. slide block, 7. fixes magnetoelectric sensor, 8. slide bar, 9. spring wire, 10.
The second amplification/shaping circuit corresponding with fixed magnetoelectric sensor, 11, the first amplification/shaping circuit corresponding with slide block, 12
Trigger voltage u2,13. trigger voltages u1,14. OR circuits, 15. trigger voltages u3,16.D triggers, 17. output pulse electricity
Pressure u0,18. soft iron blocks, 19. permanent magnets, 20. coils, 21. coil leads, 22. coil leads.
Specific embodiment
In FIG, steamboat M1（1）With steamboat M2（2）Diameter is identical, and in the same plane, M1M2 distances keep
It is fixed as L so that lower crawler belt（3）With upper crawler belt（4）Change is in line and parallel to each other.M1（1）It is inverse with constant speed V in the case where motor drives
Hour hands are rotated, and M2 (2) is driven by M1 (1) in the case where being acted on by whole piece crawler belt and rotated counterclockwise with constant speed V.Soft iron block（5）
Whole piece track surface is moved in periodic cycle with constant speed V, does periodically even apart from interior in L with constant speed V in upper and lower crawler belt
Speed linear motion.Slide bar（8）With lower crawler belt（3）Upper crawler belt（4）It is parallel to each other, fixed magnetoelectric sensor（7）In slide bar（8）B
End position immobilizes, slide block（6）In slide bar（8）Upper left and right moves freely, slide bar（8）With upper crawler belt（4）Distance is fixed on to be made
Soft iron block（5）Cause slide block（6）With fixed magnetoelectric sensor（7）Response be defined apart from interior.Slide block（6）Motion track is along soft
Iron block（5）The straight line portion movement of the movement locus of whole cycle loopy moving, fixed magnetoelectric sensor（7）With slide block
（6）Along soft iron block（5）The movement locus straight line portion of whole cycle loopy moving is presented relative motion.Slide block（6）Output
End Jing spring wires（9）With the first amplification/shaping circuit（11）Input is connected, the first amplification/shaping circuit（11）Output end with
OR circuit（14）Input UB is connected, fixed magnetoelectric sensor（7）Output end and the second amplification/shaping circuit（10）Input
End is connected, the second amplification/shaping circuit（10）Output end and OR circuit（14）Input UA is connected, OR circuit（14）Output
End UC and d type flip flop（16）Triggering end CLK is connected, d type flip flop（16）Q ends are final output end Out.
In fig. 2, coil（20）It is wrapped in permanent magnet（19）On, through coil（20）Magnetic flux will not change, when soft
Iron（18）Near permanent magnet（19）Breach when, due to soft iron（18）Magnetic conductivity it is bigger than air, permanent magnet and breach can be caused
Air is so the magneto resistive ratio soft iron of the closed magnetic circuit for being formed（18）The magnetic resistance of the closed magnetic circuit formed with permanent magnet is big, finally draws
Rise through coil（20）Magnetic flux change and in coil produce induced voltage and by coil lead 21 and 22 draw into
The process of row amplification/shaping.
In fig. 3, it is assumed that initial time slide block（6）In slide bar（8）Location A, d type flip flop (16) Q ends be low level
0, as steamboat M1 (1) and M2 (2) are rotated counterclockwise with constant speed V, the soft iron block on crawler belt（5）Also with constant speed V
Motion, at the t0 moment fixed magnetoelectric sensor is moved to（7）During lower section, fixed magnetoelectric sensor（7）Export pulse electricity
Pressure Jing second amplifies/shaping circuit（10）After become with certain amplitude trigger voltage u1 and send into OR circuit（14）Input
UA, OR circuit（14）The end UC of output switchs to high level 1, d type flip flop by low level 0（16）Upset, its Q ends output high level
1 and keep constant, in t1 moment, soft iron block（5）Move to slide block（6）Lower section, slide block（The magnetoelectricity that can be moved left and right on slide bar
Formula sensor）A pulse voltage is exported through the first amplification/shaping circuit（11）Amplify and become to be touched with certain amplitude after shaping
Generate electricity and press u2 and send into OR circuit（14）Input UB, OR circuit（14）Output end UC switchs to high level 1, D by low level 0
Trigger（16）Overturn again at the t1 moment, its Q end is returned to low level 0 and keeps constant by high level 1, output pulse electricity
Pressure u0 pulsewidths are T0, if slide block（6）Move to slide bar（8）Position a1 positions, d type flip flop（16）Overturn again at the t2 moment
For low level 0, the pulsewidth of voltage pulse output is T1, slide block（6）Move to slide bar（8）During a2 positions, d type flip flop（16）In t3
Moment is overturn again as low level 0, and voltage pulse output pulsewidth is T2, slide block（6）Move to slide bar（8）During a3 positions, D triggerings
Device（16）Overturn again as low level 0 at the t4 moment, voltage pulse output pulsewidth is T3, slide block（6）Move to slide bar（8）A4 positions
When putting, d type flip flop（16）Overturn again as low level 0 at the t5 moment, voltage pulse output pulsewidth is T4.Soft iron block（5）Carrying out
Belt surface is moved in periodic cycle with constant speed V, slide block（6）With fixed magnetoelectric sensor（7）In soft iron block（5）Motion
On track, with soft iron block（5）Its response can be triggered apart from interior, with soft iron block（5）Distance keep immobilize.Fixed magneto-electric
Sensor（7）, in soft iron block（5）Movement locus, a fixed position above is constant, slide block（6）Along soft iron block（5）Movement
Track moves freely.Slide block（6）With fixed magnetoelectric sensor（7）, along soft iron block（5）Motion track keeps relative motion.It is soft
Iron block（5）Speed is moved in periodic cycle with constant speed V in track surface, slide block is significantly larger than（6）Pass with fixed magneto-electric
Sensor（7）, along soft iron block（5）Motion track keeps the speed of relative motion, with during the response for ensureing whole straight-line displacement measurement
Between.Fixed magnetoelectric sensor（7）With slide block（6）, in soft iron block（5）Above motion track, by soft iron block（5）Periodically touch
Send out.Fixed magnetoelectric sensor（7）, in soft iron block（5）Pulse voltage u1 exported after periodic triggers, cause be operated in it is double
The d type flip flop of stable state（16）Output switching activity, with slide block（6）In soft iron block（5）Pulse voltage u2 exported after periodic triggers,
Cause the bistable d type flip flop of work（16）Output switching activity state it is contrary.By being in bistable d type flip flop（16）, institute
Voltage pulse output u0（17）Pulse width T, with fixed magnetoelectric transducer（7）And slide block（6）, along soft iron block（5）It is mobile
Relative distance between track is directly proportional.
Claims (8)
1. a kind of identical two steamboat M1 (1) of constant speed rotary formula contactless linear displacement transducer, including diameter, M2（2）, under
Crawler belt（3）, upper crawler belt（4）, soft iron block（5）, slide block（6）, fixed magnetoelectric sensor（7）, slide bar（8）, spring wire（9）, the
Two amplifications/shaping circuit（10）, the first amplification/shaping circuit（11）, OR circuit（14）, and be operated in bistable D touch
Send out device（16）, steamboat M1 (1) and steamboat M2 (2) is in the same plane simultaneously while be enclosed within same crawler belt, distance is maintained at L and causes
Upper crawler belt（4）With lower crawler belt（3）Become two straight lines parallel to each other, steamboat M1 is driven and with perseverance by the motor of a constant revolution
Determine V rotate counterclockwises, steamboat M2 is driven with constant speed V rotate counterclockwise by crawler belt by steamboat M1, it is characterized by：Track surface is consolidated
A fixed soft iron block（5）, moved in periodic cycle with constant speed V in whole track surface, and in upper crawler belt（4）With lower shoe
Band（3）On do periodicity linear uniform motion, slide bar（8）With lower crawler belt（3）Upper crawler belt（4）Parallel to each other, fixed magneto-electric is passed
Sensor（7）In slide bar（8）B end positions immobilize, slide block（6）In slide bar（8）Upper left and right moves freely, slide bar（8）With upper shoe
Band（4）Distance is fixed on makes soft iron block（5）Cause slide block（6）With fixed magnetoelectric sensor（7）Response be defined apart from interior, it is sliding
Block（6）Motion track is along soft iron block（5）The straight line portion movement of the movement locus of whole cycle loopy moving, fixed magneto-electric
Sensor（7）With slide block（6）Along soft iron block（5）The movement locus straight line portion of whole cycle loopy moving is presented relative fortune
It is dynamic, slide block（6）Output end Jing spring wire（9）With the first amplification/shaping circuit（11）Input is connected, the first amplification/shaping electricity
Road（11）Output end and OR circuit（14）Input UB is connected, fixed magnetoelectric sensor（7）Output end with second amplify/it is whole
Shape circuit（10）Input is connected, the second amplification/shaping circuit（10）Output end and OR circuit（14）Input UA is connected, or
Gate circuit（14）Output end UC and d type flip flop（16）Triggering end CLK is connected, d type flip flop（16）Q ends are final output end Out.
2. constant speed rotary formula contactless linear displacement transducer according to claim 1, it is characterized by：Soft iron block（5）
Moved in periodic cycle with constant speed V in track surface, slide block（6）With fixed magnetoelectric sensor（7）In soft iron block（5）
On movement locus, with soft iron block（5）Its response can be triggered apart from interior, with soft iron block（5）Distance keep immobilize.
3. constant speed rotary formula contactless linear displacement transducer according to claim 1, it is characterized by：Fixed magneto-electric
Sensor（7）, in soft iron block（5）Movement locus above a fixed position it is constant, slide block（6）Along soft iron block（5）Movement
Track moves freely.
4. constant speed rotary formula contactless linear displacement transducer according to claim 1, it is characterized by：Slide block（6）With
Fixed magnetoelectric sensor（7）, along soft iron block（5）Motion track keeps relative motion.
5. constant speed rotary formula contactless linear displacement transducer according to claim 1, it is characterized by：Soft iron block（5）
Speed is moved in periodic cycle with constant speed V in track surface, slide block is significantly larger than（6）With fixed magnetoelectric sensor（7）
Along soft iron block（5）Motion track keeps the speed of relative motion.
6. constant speed rotary formula contactless linear displacement transducer according to claim 1, it is characterized by：Fixed magneto-electric
Sensor（7）With slide block（6）, in soft iron block（5）Above motion track, by soft iron block（5）Periodic triggers.
7. constant speed rotary formula contactless linear displacement transducer according to claim 1, it is characterized by：Fixed magneto-electric
Sensor（7）, in soft iron block（5）Pulse voltage u1 exported after periodic triggers, causes and is operated in bistable d type flip flop
（16）Output switching activity, with slide block（6）In soft iron block（5）Pulse voltage u2 exported after periodic triggers, causes work bistable
The d type flip flop of state（16）Output switching activity state it is contrary.
8. constant speed rotary formula contactless linear displacement transducer according to claim 1, it is characterized by：By being in bistable
The d type flip flop of state（16）, institute voltage pulse output u0（17）Pulse width T, with fixed magnetoelectric sensor（7）And slide block
（6）, along soft iron block（5）Relative distance between motion track is directly proportional.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620831452.9U CN206160925U (en) | 2016-08-02 | 2016-08-02 | Constant-speed rotary non-contact linear displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620831452.9U CN206160925U (en) | 2016-08-02 | 2016-08-02 | Constant-speed rotary non-contact linear displacement sensor |
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| Publication Number | Publication Date |
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| CN206160925U true CN206160925U (en) | 2017-05-10 |
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| CN201620831452.9U Expired - Fee Related CN206160925U (en) | 2016-08-02 | 2016-08-02 | Constant-speed rotary non-contact linear displacement sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398203A (en) * | 2019-08-14 | 2019-11-01 | 东风设备制造有限公司 | Long range laser length measurement method and device |
-
2016
- 2016-08-02 CN CN201620831452.9U patent/CN206160925U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398203A (en) * | 2019-08-14 | 2019-11-01 | 东风设备制造有限公司 | Long range laser length measurement method and device |
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Granted publication date: 20170510 Termination date: 20180802 |