CN106483320A - A kind of speed detector, variator and Rotating speed measring method - Google Patents
A kind of speed detector, variator and Rotating speed measring method Download PDFInfo
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- CN106483320A CN106483320A CN201510540685.3A CN201510540685A CN106483320A CN 106483320 A CN106483320 A CN 106483320A CN 201510540685 A CN201510540685 A CN 201510540685A CN 106483320 A CN106483320 A CN 106483320A
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Abstract
The invention provides a kind of speed detector, variator and Rotating speed measring method, it is related to automobile technical field, the capacity of resisting disturbance for solving the problems, such as speed detector of the prior art is poor.Speed detector includes：It is arranged in transmission case body, for light shining the luminescence unit of the setting regions of rotating shaft to be measured；It is arranged in transmission case body, for by the photoimaging of the setting regions of described rotating shaft to be measured reflection and be converted to the image-generating unit of signal of video signal；And be connected with described image-generating unit signal, the signal of video signal for being fed back according to described image-generating unit calculates the processing unit of the rotating speed of described rotating shaft to be measured.Speed detector of the present invention is applied to detect the rotating speed of the input shaft of variator.
Description
Technical field
The present invention relates to automobile technical field, particularly to the inspection of a kind of speed detector, variator and rotating speed
Survey method.
Background technology
It is provided with speed detector in variator, be generally used for detecting the rotating speed of the input shaft of variator,
The rotating speed of the input shaft of variator is passed to control system by speed detector, and control system is according to variator
The rotating speed of input shaft the miscellaneous part in automobile is controlled.
At present, speed detector generally includes：It is sheathed on the pulse wheel on the input shaft of variator, setting
In the other Hall element of pulse wheel, pulse wheel is the element that is magnetic, when input shaft rotates, pulse wheel with
Input shaft rotates together so that the magnetic field around Hall element produces change, and Hall element senses arteries and veins
Punching wheel produces the signal of telecommunication of change after rotating the change bringing magnetic field, control system is fed back according to Hall element
Change the signal of telecommunication calculate input shaft rotating speed.
But, because the magnetic field that pulse wheel produces easily is disturbed by ferrous components, and exist in variator
The components and parts (such as bolt) of a lot of ironys, therefore, during input shaft rotates, Hall element week
There is uncertain change because of the interference of the components and parts of the irony in variator in the change enclosing magnetic field,
So that the change fed back by Hall element the signal of telecommunication calculate the rotating speed of input shaft with reality defeated
The rotating speed entering axle is not inconsistent.That is, the poor anti jamming capability of above-mentioned speed detector.
Content of the invention
In view of this, it is contemplated that proposing a kind of speed detector, to solve rotating speed of the prior art
The poor problem of the capacity of resisting disturbance of detection means.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that：
A kind of speed detector, including：
It is arranged in transmission case body, for light shining the luminescence unit of the setting regions of rotating shaft to be measured；
Be arranged in transmission case body, for by the photoimaging of the setting regions of described rotating shaft to be measured reflection and turn
It is changed to the image-generating unit of signal of video signal；
And be connected with described image-generating unit signal, based on the signal of video signal being fed back according to described image-generating unit
Calculate the processing unit of the rotating speed of described rotating shaft to be measured.
Further, described processing unit includes：
Be connected with described image-generating unit signal, for the same area that judges in two neighboring signal of video signal and
Judge the judging unit of the displacement between the same area in two neighboring signal of video signal；
And be connected with described judging unit, for the two neighboring image letter according to the judgement of described judging unit
Number same area between displacement calculate described rotating shaft to be measured rotating speed computing unit.
Preferably, described speed detector also includes lens subassembly, and described lens subassembly is installed on described change
In fast device housing, for the setting regions of anaclasis that described luminescence unit is sent to described rotating shaft to be measured,
And by the anaclasis of described rotating shaft reflection to be measured to image-generating unit.
Alternatively, described luminescence unit includes light emitting diode.
It is preferred that described image-generating unit includes imaging sensor.
With respect to prior art, speed detector of the present invention has the advantage that：
When above-mentioned speed detector being used for the rotating speed detecting the input shaft of variator, due to luminescence unit
All it is arranged in transmission case body with image-generating unit, processing unit is connected with image-generating unit signal, luminescence unit
Light shine the setting regions of rotating shaft to be measured, light reflects in the setting regions of rotating shaft to be measured, imaging is single
Unit by the photoimaging of the setting regions reflection of rotating shaft to be measured and is converted to signal of video signal, and processing unit is according to imaging
The signal of video signal of unit feedback calculates the rotating speed of rotating shaft to be measured.Compared with speed detector of the prior art,
The speed detector that the present invention provides calculates rotating speed, again due to light after converting optical signals to signal of video signal
Propagation will not disturb because of the material of other components and parts in variator, therefore, the present invention provide rotating speed
The strong antijamming capability of detection means.
Another object of the present invention is to proposing a kind of variator, to solve Rotating speed measring dress of the prior art
The poor problem of the capacity of resisting disturbance put.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that：
A kind of variator, including：Input shaft, and for detecting the Rotating speed measring dress of described input shaft rotating speed
Put.
Further, described input shaft is provided with multiple grooves, the length direction of described groove is defeated with described
The axial direction entering axle is identical, and multiple described grooves are along the circumferentially-spaced arrangement of described input shaft.
Preferably, the width of the circumference along described input shaft for the two adjacent described grooves is different.
With respect to prior art, variator of the present invention has the advantage that：
Described variator is had the advantage that identical, here with above-mentioned speed detector with respect to prior art
Repeat no more.
Another object of the present invention is to proposing a kind of Rotating speed measring method, to solve rotating speed of the prior art
The poor problem of the capacity of resisting disturbance of detection means.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that：
A kind of Rotating speed measring method, is applied to the speed detector as described in technique scheme, including：
Luminescence unit light shines the setting regions of rotating shaft to be measured；
Image-generating unit by the image formation by rays of described rotating shaft reflection to be measured and is converted to signal of video signal；
Processing unit calculates the rotating speed of described rotating shaft to be measured according to the signal of video signal that described image-generating unit feeds back.
Further, described processing unit includes judging unit and computing unit, and described processing unit is according to institute
The step of the rotating speed that the signal of video signal stating image-generating unit feedback calculates described rotating shaft to be measured specifically includes：
Described judging unit judges the same area in two neighboring signal of video signal, and judges two neighboring image
The displacement between same area in signal；
Between the same area of the two neighboring signal of video signal that described computing unit judges according to described judging unit
Displacement calculate described rotating shaft to be measured rotating speed.
With respect to prior art, Rotating speed measring method of the present invention has the advantage that：
Described Rotating speed measring method is had the advantage that identical, here with above-mentioned variator with respect to prior art
Repeat no more.
Brief description
The accompanying drawing constituting the part of the present invention is used for providing a further understanding of the present invention, and the present invention shows
Meaning property embodiment and its illustrate for explaining the present invention, does not constitute inappropriate limitation of the present invention.In accompanying drawing
In：
Fig. 1 is the structural representation of the speed detector described in the embodiment of the present invention；
Fig. 2 is the system schematic of the speed detector described in the embodiment of the present invention；
The image schematic diagram one that Fig. 3 is formed for image-generating unit in the speed detector described in the embodiment of the present invention；
The image schematic diagram two that Fig. 4 is formed for image-generating unit in the speed detector described in the embodiment of the present invention；
Fig. 5 is the flow chart one of the Rotating speed measring method described in the embodiment of the present invention；
Fig. 6 is the flowchart 2 of the Rotating speed measring method described in the embodiment of the present invention.
Description of reference numerals：
1- luminescence unit, 2- rotating shaft to be measured,
21- setting regions, 3- image-generating unit,
4- processing unit, 5,51,52- groove,
6- case of transmission, 7- plug connector.
Specific embodiment
It should be noted that in the case of not conflicting, the embodiment in the present invention and the feature in embodiment
Can be mutually combined.
To describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Embodiment one
Refer to Fig. 1 and Fig. 2, embodiments provide a kind of speed detector, including：Luminous
Unit 1, image-generating unit 3 and processing unit 4, wherein, luminescence unit 1 and image-generating unit 3 may be contained within becoming
The inside of fast device housing 6, processing unit 4 is connected with image-generating unit 3 signal.
When above-mentioned speed detector being used for be used in the variator of automobile detecting turning of the input shaft of variator
When fast, processing unit 4 can be connected with the controller signals in automobile by plug connector 7, makes the controller can
The rotating speed of the input shaft according to variator controls other components and parts in automobile.Using above-mentioned speed detector
The process detecting the rotating speed of rotating shaft 2 to be measured is：Luminescence unit 1 light shines the setting area of rotating shaft 2 to be measured
Domain 21, light reflects in the setting regions 21 of rotating shaft 2 to be measured, and image-generating unit 3 is by rotating shaft 2 to be measured
The photoimaging of setting regions 21 reflection is simultaneously converted to signal of video signal, and processing unit 4 feeds back according to image-generating unit 3
Signal of video signal calculate rotating shaft 2 to be measured rotating speed.Compared with speed detector of the prior art, this
The speed detector that bright embodiment provides calculates rotating speed, again due to light after converting optical signals to signal of video signal
The propagation of line will not be disturbed because of the material of other components and parts in variator, and therefore, the embodiment of the present invention carries
For speed detector strong antijamming capability.
Above-mentioned processing unit 4 includes the judging unit being connected with image-generating unit 3 signal, and and judging unit
The computing unit that signal connects, the process that above-mentioned processing unit 4 calculates rotating speed specifically includes：Judging unit pair
Two signal of video signal of ratio, judge the same area in two signal of video signal, and judge in two signal of video signal
The displacement of same area；Computing unit according to the displacement of above-mentioned same area and receives two images
The time interval of signal calculates rotating speed.Above-mentioned two signal of video signal can be adjacent or non-conterminous, due to treating
Survey the possible velocity of rotation of rotating shaft 2 very fast, therefore for avoiding there is not same area among two signal of video signal,
Calculate the rotating speed of rotating shaft 2 to be measured preferably by two adjacent signal of video signal.
When being embodied as, judge in two signal of video signal for the ease of the judging unit in speed detector
Same area, can carry out coarse process to the setting regions 21 of rotating shaft 2 to be measured, for example, please continue to refer to
Fig. 1, the setting regions 21 of rotating shaft 2 to be measured is provided with multiple grooves 5, the length direction of groove 5 with to be measured
The axis direction of rotating shaft 2 is identical, multiple groove 5 being provided at circumferentially spaced along rotating shaft 2 to be measured.Below to treat
Survey to be provided with rotating shaft 2 and the work process of above-mentioned judging unit and computing unit is carried out as a example multiple grooves 5
Explanation：Refer to Fig. 3, the subregion of groove 52 and groove 51 in the image in Fig. 3, can be seen
Zone Full, after rotating shaft 2 to be measured turns over certain angle, refers to Fig. 4, permissible in the image in Fig. 4
See the subregion of groove 51 and the Zone Full of groove 52；Then judging unit is by the image in Fig. 3
With in the image of Fig. 4 it can be seen that region be set as same area A (include rotating shaft 2 to be measured on be located at
Region between groove 52 and groove 51, the subregion of the groove 52 of display in Fig. 3, and Fig. 4
The subregion of the groove 51 of middle display), and computing unit is schemed relatively according to same area A in the diagram
Displacement L of same area A in 3, and computing unit receives the corresponding image of image in Fig. 3
The time interval of the corresponding signal of video signal of the image in signal and Fig. 4 calculates the rotating speed of rotating shaft 2 to be measured.
In order that luminescence unit 1 is irradiated to the light in the setting regions 21 of rotating shaft 2 to be measured, and rotating shaft to be measured 2
Setting regions 21 reflex to image-generating unit 3 light intensity enhancing it is preferable that speed detector also wraps
Include lens subassembly (not shown), specifically, lens subassembly includes being installed on multiple in case of transmission 6
Mirror, wherein at least one lens are located between luminescence unit 1 and the setting regions 21 of rotating shaft to be measured 2, light
The light that unit 1 sends via lens refractive illumination in the setting regions 21 of rotating shaft 2 to be measured, at least one
Lens are located between setting regions 21 and the image-generating unit 3 of rotating shaft 2 to be measured, the light warp of rotating shaft 2 reflection to be measured
By being irradiated to after the refraction of lens on image-generating unit 3.Lens can by the light collection dissipating, thus
Make the intensity enhancing of light.Additionally, lens can change the angle of light that is to say, that can pass through to change
The quantity of lens and installation site, by the setting area of the anaclasis of remotely located luminescence unit 1 to axle to be measured
It is also possible to the anaclasis reflecting the setting regions 21 of axle to be measured are on the image-generating unit 3 of distant place on domain 21,
So that the installation site of luminescence unit 1 and image-generating unit 3 can be diversified, it is not limited to a certain fixed area
Domain (does not for example have luminescence unit 1 during lens subassembly can be only installed at relative with the setting regions 21 of axle to be measured
Place, so that light can shine directly into the setting regions 21 of axle to be measured).
It should be noted that above-mentioned luminescence unit 1 can be any components and parts that can send light, due to
The small volume of light emitting diode, therefore selects light emitting diode in embodiments of the present invention as luminescence unit 1.
Above-mentioned image-generating unit 3 can be imaging sensor, and imaging sensor includes sensitive chip, and sensitive chip can
With by video conversion as signal of video signal.Light emitting diode and imaging sensor can be separately mounted to transmission case
It is also possible to first light emitting diode and imaging sensor be integrated in body 6, then it is installed to speed change again
In device housing 6.Above-mentioned processing unit 4 can be arranged in case of transmission 6 it is also possible to be arranged at speed change
Outside device housing 6, the processing unit 4 of the rotation speed detection unit in Fig. 1 is arranged at outside case of transmission 6, becomes
It is provided with plug connector 7, plug connector 7 is connected with imaging sensor and processing unit 4 respectively outside fast device housing 6,
So that the signal of video signal of imaging sensor lift to be passed to processing unit 4.Judgement in above-mentioned processing unit 4
Unit can be DSP (digital signal processor, digital signal processor), and computing unit can be
MCU (Micro Control Unit, micro-control unit).
Embodiment two
The embodiment of the present invention two provides a kind of variator, including：Input shaft and such as above-described embodiment one provide
Speed detector, this speed detector is installed in variator, for detecting the rotating speed of input shaft.
The speed detector that the variator that the embodiment of the present invention two provides is provided with above-described embodiment one is with respect to existing
Technology is had the advantage that identical, will not be described here.
Judge the same area in two signal of video signal for the ease of the judging unit in speed detector, please
Refering to Fig. 1, in a preferred embodiment, input shaft is provided with multiple grooves 5, the length of groove 5
Direction is identical with the axis direction of input shaft, multiple groove 5 being provided at circumferentially spaced along input shaft.So set
Meter, in the circumference of input shaft, being provided with the region of groove 5 and the region being not provided with groove 5 has significantly not
Same, therefore, when carrying out judging the same area in two signal of video signal, more spies can be found
Levy a little to help judge.Certainly, the length direction of groove 51 also can be axially inclined with respect to input shaft.
Judging unit in order to be easy to further in speed detector judges the same zone in two signal of video signal
Domain is it is preferable that two adjacent grooves 5 are different along the width of the circumference of input shaft.Be so designed that, when send out
When light is irradiated to the setting regions of input shaft by light unit 1, in the signal of video signal that image-generating unit 3 is formed,
Represent the signal of video signal in region being provided with wider width groove 5, the area representing the groove 5 being provided with narrower width
The signal of video signal in domain has obvious difference with the signal of video signal representing the region being not provided with groove 5, therefore,
When carrying out judging the same area in two signal of video signal, more characteristic points can be found to help
Judge, thus further increasing the precision of the rotating speed that speed detector calculates.It is noted that
Above-mentioned each groove 5 can be with input shaft equal length vertically it is also possible to compare along the length of input shaft axial direction
Input shaft length vertically is little, such as, in Fig. 1, only the setting regions in input shaft arranges groove 5.
Embodiment three
Refer to Fig. 5, the embodiment of the present invention three provides a kind of Rotating speed measring method, is applied to above-mentioned enforcement
The speed detector that example one provides, this Rotating speed measring method includes：
Step 100, luminescence unit 1 light shine the setting regions 21 of rotating shaft 2 to be measured；
Image formation by rays that rotating shaft 2 to be measured is reflected by step 200, image-generating unit 3 is simultaneously converted to signal of video signal；
Step 300, processing unit 4 calculate rotating shaft 2 to be measured according to the signal of video signal that image-generating unit 3 feeds back
Rotating speed.
When being embodied as, the light that luminescence unit 1 sends can shine directly into the setting regions of rotating shaft 2 to be measured
21 it is also possible to be irradiated to the setting regions 21 of rotating shaft 2 to be measured after the refraction of lens；Similarly, it is imaged
Unit 3 can accept the light directly reflecting via the setting regions 21 of rotating shaft 2 to be measured it is also possible to accept to treat
The light that the setting regions 21 of survey rotating shaft 2 directly reflects is again via the light projecting after the refraction of lens.
Refer to Fig. 6, processing unit 4 includes judging unit and computing unit, processing unit 4 is according to imaging
The step of the rotating speed that the signal of video signal of unit 3 feedback calculates rotating shaft 2 to be measured specifically includes：
Step 301, judging unit judge the same area in two neighboring signal of video signal, and judge adjacent two
The displacement between same area in individual signal of video signal；
The same area of the two neighboring signal of video signal that step 302, computing unit judge according to judging unit it
Between displacement calculate rotating speed.When being embodied as, can be by the same area of two neighboring signal of video signal between
Displacement, the radius of rotating shaft 2 to be measured, and receive the relation meter of the time interval between two signal of video signal
Calculate the rotating speed of axle to be measured.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Within bright spirit and principle, any modification, equivalent substitution and improvement made etc., should be included in this
Within bright protection domain.
Claims (10)
1. a kind of speed detector is it is characterised in that include：
It is arranged in case of transmission (6), be used for light shining the setting regions (21) of rotating shaft to be measured (2)
Luminescence unit (1)；
It is arranged in case of transmission (6), for by the setting regions (21) of described rotating shaft (2) to be measured
The photoimaging reflecting the image-generating unit (3) being converted to signal of video signal；
And be connected with described image-generating unit (3) signal, for fed back according to described image-generating unit (3)
Signal of video signal calculates the processing unit (4) of the rotating speed of described rotating shaft (2) to be measured.
2. speed detector according to claim 1 is it is characterised in that described processing unit (4)
Including：
Be connected with described image-generating unit (3) signal, for judge in two neighboring signal of video signal same area,
And the judging unit of the displacement between the same area judging in two neighboring signal of video signal；
And be connected with described judging unit, for the two neighboring image letter according to the judgement of described judging unit
Number same area between displacement calculate described rotating shaft (2) to be measured rotating speed computing unit.
3. speed detector according to claim 1 is it is characterised in that described speed detector
Also include lens subassembly, described lens subassembly is installed in described case of transmission (6), for by described
The light that light unit (1) sends converge to described rotating shaft to be measured (2) setting regions (21) and will be described
The light that rotating shaft (2) to be measured is reflected converges to image-generating unit (3).
4. speed detector according to claim 1 is it is characterised in that described luminescence unit (1)
Including light emitting diode.
5. speed detector according to claim 1 is it is characterised in that described image-generating unit (3)
Including imaging sensor.
6. a kind of variator is it is characterised in that include：Input shaft, and be used for detecting that described input shaft turns
Speed, the speed detector as described in claim 1-5 any one.
7. variator according to claim 6 is it is characterised in that be provided with multiple on described input shaft
Groove (5), the length direction of described groove (5) is identical with the axial direction of described input shaft, multiple described grooves
(5) along the circumferentially-spaced arrangement of described input shaft.
8. variator according to claim 7 is it is characterised in that adjacent two described grooves (5)
The circumference along described input shaft width different.
9. a kind of Rotating speed measring method, is applied to the Rotating speed measring dress as described in claim 1-5 any one
Put it is characterised in that including：
Luminescence unit (1) light shines the setting regions (21) of rotating shaft to be measured (2)；
Image formation by rays that described rotating shaft (2) to be measured is reflected by image-generating unit (3) is simultaneously converted to signal of video signal；
Processing unit (4) calculates described rotating shaft to be measured according to the signal of video signal that described image-generating unit (3) feeds back
(2) rotating speed.
10. Rotating speed measring method according to claim 9 is it is characterised in that described processing unit (4)
Including judging unit and computing unit, described processing unit (4) is fed back according to described image-generating unit (3)
The step that signal of video signal calculates the rotating speed of described rotating shaft (2) to be measured specifically includes：
Described judging unit judges the same area in two neighboring signal of video signal, and judges two neighboring image
The displacement between same area in signal；
Between the same area of the two neighboring signal of video signal that described computing unit judges according to described judging unit
Displacement calculate described rotating shaft (2) to be measured rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510540685.3A CN106483320A (en) | 2015-08-28 | 2015-08-28 | A kind of speed detector, variator and Rotating speed measring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510540685.3A CN106483320A (en) | 2015-08-28 | 2015-08-28 | A kind of speed detector, variator and Rotating speed measring method |
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| CN106483320A true CN106483320A (en) | 2017-03-08 |
Family
ID=58235967
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510540685.3A Pending CN106483320A (en) | 2015-08-28 | 2015-08-28 | A kind of speed detector, variator and Rotating speed measring method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110155028A (en) * | 2019-04-11 | 2019-08-23 | 汉腾汽车有限公司 | A kind of one axis speed signal acquisition of AMT hybrid electric vehicle gearshift case and method |
| CN112798813A (en) * | 2021-01-25 | 2021-05-14 | 河南科技大学 | Method for testing rotating speed of revolution driven member in pair-rolling friction pair |
| RU213793U1 (en) * | 2022-08-03 | 2022-09-29 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Владимирский Государственный Университет имени Александра Григорьевича и Николая Григорьевича Столетовых" (ВлГУ) | Shaft speed measuring device |
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| EP0396257A1 (en) * | 1989-04-21 | 1990-11-07 | Kowa Company Ltd. | Method and apparatus for measuring the velocity of a fluid |
| CN101074965A (en) * | 2007-06-26 | 2007-11-21 | 南京航空航天大学 | Method and apparatus for measuring rotation speed based on image discriminating position |
| CN201247072Y (en) * | 2008-05-30 | 2009-05-27 | 安徽宏实光机电高科有限公司 | Rotary encoder based on linear array CCD relevant speed-measuring technology |
| CN103424077A (en) * | 2012-05-23 | 2013-12-04 | 联想(北京)有限公司 | Motion detection device, detection method and electronic equipment |
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| EP0396257A1 (en) * | 1989-04-21 | 1990-11-07 | Kowa Company Ltd. | Method and apparatus for measuring the velocity of a fluid |
| CN101074965A (en) * | 2007-06-26 | 2007-11-21 | 南京航空航天大学 | Method and apparatus for measuring rotation speed based on image discriminating position |
| CN201247072Y (en) * | 2008-05-30 | 2009-05-27 | 安徽宏实光机电高科有限公司 | Rotary encoder based on linear array CCD relevant speed-measuring technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110155028A (en) * | 2019-04-11 | 2019-08-23 | 汉腾汽车有限公司 | A kind of one axis speed signal acquisition of AMT hybrid electric vehicle gearshift case and method |
| CN112798813A (en) * | 2021-01-25 | 2021-05-14 | 河南科技大学 | Method for testing rotating speed of revolution driven member in pair-rolling friction pair |
| RU213793U1 (en) * | 2022-08-03 | 2022-09-29 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Владимирский Государственный Университет имени Александра Григорьевича и Николая Григорьевича Столетовых" (ВлГУ) | Shaft speed measuring device |
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Application publication date: 20170308 |