CN106124794A - A kind of speed switch based on technique of laser imaging and speed detection method - Google Patents
A kind of speed switch based on technique of laser imaging and speed detection method Download PDFInfo
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- CN106124794A CN106124794A CN201610629074.0A CN201610629074A CN106124794A CN 106124794 A CN106124794 A CN 106124794A CN 201610629074 A CN201610629074 A CN 201610629074A CN 106124794 A CN106124794 A CN 106124794A
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- laser
- speed
- speed switch
- imaging
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- 238000003384 imaging method Methods 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000001514 detection method Methods 0.000 title claims abstract description 14
- 238000004891 communication Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000011514 reflex Effects 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims 1
- 230000033001 locomotion Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004446 light reflex Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/36—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
- G01P3/38—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light using photographic means
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
The invention provides a kind of speed switch based on technique of laser imaging.Described speed switch based on technique of laser imaging includes that laser imaging assembly, digital signal processor, microcontroller and output circuit, described laser imaging assembly, described digital signal processor, described microcontroller and described output circuit are sequentially connected with setting；Described laser imaging assembly includes lasing light emitter, lens subassembly, the imaging sensor of image and control chip, described control chip electrically connects setting with described lasing light emitter, described imaging sensor communicates to connect with described digital signal processor, the laser that described lasing light emitter sends guides and is radiated at described UUT surface by described lens subassembly, and described imaging sensor catches the image on described UUT surface.The present invention also provides for a kind of speed detection method based on described speed switch based on technique of laser imaging.
Description
Technical field
Relate to the present invention a kind of speed switch based on technique of laser imaging and speed detection method.
Background technology
Speed switch is a kind of basic speed monitoring equipment, and existing speed switch many employings electromagnetic induction principle produces
Pulse signal, this pulse signal frequency is compared by sensor with predetermined frequency, when the pulse frequency of monitored parts is less than
During speed switch setpoint frequency, switch is open mode；When the pulse frequency of monitored parts is more than speed switch setpoint frequency
Switch is closure state.
But, use the speed switch major defect of electromagnetic induction principle to have: linear velocity one, cannot be monitored, can only monitor
Rotary speed；Two, monitored rotary shaft must have metal lug, in order to produces pulse signal during rotation.
So the typical application scenarios of existing speed switch is as shown in Figure 1, it can be seen that this kind of speed switch is only
It is only applicable to monitor rotary speed, requires that monitored parts are necessary for metal material, metal tooth depth and the tooth to rotary shaft simultaneously
Width all has strict demand.Under a lot of engineer applied occasions, the forms of motion of monitored object is linear motion, and this kind of speed is opened
Pass cannot realize function；Rotary shaft is nonmetal, or when physical size is unsatisfactory for requiring in figure one, this kind of speed switch also without
Method realizes function.Just because of the disadvantages described above of induction speed switch, limit its application in industrial circle.
Therefore, it is necessary to provide a kind of speed switch based on technique of laser imaging using contactless imaging technique and
Speed detection method.
Summary of the invention
It is an object of the invention to provide a kind of speed based on technique of laser imaging using contactless imaging technique
Switch and speed detection method.
Technical scheme is as follows: a kind of speed switch based on technique of laser imaging, including for portion to be measured
Part carries out the laser imaging assembly of imaging, for obtaining the digital signal processor of described UUT exercise data, for sentencing
The microcontroller of disconnected UUT motion conditions and for the output circuit to the outside output signal of telecommunication, described laser imaging group
Part, described digital signal processor, described microcontroller and described output circuit are sequentially connected with setting；Described laser imaging assembly
Including for providing the lasing light emitter of laser, for the lens subassembly of guided laser transmission, for absorbing the figure that described laser is formed
The imaging sensor of picture and for controlling the control chip of described operation of laser sources power, described control chip and described lasing light emitter
Electrical connection is arranged, and described imaging sensor communicates to connect with described digital signal processor, and the laser that described lasing light emitter sends leads to
Crossing described lens subassembly and guide and be radiated at described UUT surface, described imaging sensor catches described UUT surface
Image, and described image is sent to described digital signal processor.
Preferably, described lens subassembly includes opposing parallel spaced first plane mirror and the second plane mirror, and
With described imaging sensor relative spacing arrange concavees lens, the laser that described first plane mirror and described lasing light emitter send in
45 ° of angles are arranged, and described laser reflexes to described second plane mirror through described first plane mirror, and described second plane mirror will
Described laser with 30 ° of corner reflections to the surface of described UUT.
Preferably, described concavees lens receive the reflection laser being perpendicular to described UUT surface, and described reflection are swashed
Light converges to described imaging sensor.
Preferably, described digital signal processor is connected with described micro-controller communications by SPI communication interface.
Preferably, described output circuit includes the photoelectrical coupler being sequentially connected electrically setting and drives audion, described light
Electric coupler electrically connects setting with described microcontroller, and described driving audion electrically connects setting with extraneous relay.
Preferably, the outside of described microcontroller is additionally provided with the rotational potentiometer for realizing regulating preset speed, institute
State rotational potentiometer and electrically connect setting by a/d converter with described microcontroller.
Preferably, described lasing light emitter is laser diode.
A kind of speed detection method based on above-mentioned speed switch based on technique of laser imaging, comprises the steps:
A, laser imaging assembly utilize laser to obtain the laser image of UUT；
B, digital signal processor receive and process described laser image, and obtain the velocity information of described UUT；
C, the duty of switch of regulating the speed based on described velocity information.
Preferably, in stepb, described digital signal processor is suitable according to the time to the imaging sequence of described laser image
Sequence is analyzed process, thus obtains the velocity information of described UUT.
Preferably, in step c, the preset speed of described velocity information with described speed switch is contrasted, and adjusts
The duty of whole described speed switch: if the preset speed less than described speed switch of described UUT velocity information
Degree, the most described speed switch is open mode；If preset more than described speed switch of described UUT velocity information
Speed, the most described speed switch is closed mode.
The beneficial effects of the present invention is: described speed switch based on technique of laser imaging and speed detection method use
Non-contact laser imaging technique, the linear motion of UUT or rotary motion all can be monitored to, simultaneously to be measured
Material and the surface texture of parts do not have particular/special requirement, extend speed switch purposes in industrial circle the most greatly.
Accompanying drawing explanation
Fig. 1 is the structural representation of the induction speed switch of prior art；
Fig. 2 is the system structure schematic diagram of the speed switch based on technique of laser imaging that the present invention provides；
Fig. 3 is the structured flowchart of speed switch based on technique of laser imaging shown in Fig. 2；
Fig. 4 is the structural representation of laser imaging assembly in speed switch based on technique of laser imaging shown in Fig. 2；
Fig. 5 is the structural representation of microcontroller in speed switch based on technique of laser imaging shown in Fig. 2；
Fig. 6 is the structural representation of output circuit in speed switch based on technique of laser imaging shown in Fig. 2；
Fig. 7 is the FB(flow block) of speed detection method based on the speed switch based on technique of laser imaging shown in Fig. 2.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.
The description of specific distinct unless the context otherwise, the element in the present invention and assembly, the shape that quantity both can be single
Formula exists, it is also possible to presented in multiple, this is not defined by the present invention.Although the step in the present invention is entered with label
Go arrangement, but be not used to limit the precedence of step, unless expressly stated the order of step or holding of certain step
Based on row needs other steps, otherwise the relative rank of step is adjustable in.It is appreciated that used herein
Term "and/or" relates to and contains one or more of any and all possible group in the Listed Items being associated
Close.
It is the system of the speed switch based on technique of laser imaging that the present invention provides please refer to Fig. 2 and Fig. 3, Fig. 2
Structural representation；Fig. 3 is the structured flowchart of speed switch based on technique of laser imaging shown in Fig. 2.The embodiment of the present invention provides
Speed switch based on technique of laser imaging 100 include the laser imaging assembly 10 for UUT being carried out imaging, use
In obtaining the digital signal processor 20 of described UUT exercise data, for judging the microcontroller of UUT motion conditions
Device 30 and for outside output the signal of telecommunication output circuit 40, described laser imaging assembly 10, described digital signal processor
20, described microcontroller 30 and described output circuit 40 are sequentially connected with setting.
Referring to Fig. 4, described laser imaging assembly 10 includes the lasing light emitter 11 for providing laser, passes for guided laser
Defeated lens subassembly 12, for absorbing the imaging sensor 13 of the image that described laser is formed and for controlling described lasing light emitter 10
The control chip 14 of operating power.Wherein, described control chip 14 electrically connects setting with described lasing light emitter 11, and described imaging senses
Device 13 communicates to connect with described digital signal processor 20.Preferably, described lasing light emitter 11 is laser diode, described control core
Sheet 14 is single-chip microcomputer.
In described laser imaging assembly 10, the laser that described lasing light emitter 11 sends is guided also by described lens subassembly 12
Being radiated at described UUT surface, described imaging sensor 13 catches the image on described UUT surface, and by described figure
As sending to described digital signal processor 20.
In the present embodiment, described lens subassembly 12 includes opposing parallel spaced first plane mirror 121 and second
Plane mirror 122, and spaced concavees lens 123 opposing parallel with described imaging sensor 13.
Wherein, the laser that described first plane mirror 121 and described lasing light emitter send is that 45 ° of angles are arranged, and described sharp
Light reflexes to described second plane mirror 122 through described first plane mirror 121, described second plane mirror 122 by described laser with 30 °
Corner reflection is to the surface of described UUT.And, described concavees lens 123 receive the reflection being perpendicular to described UUT surface
Laser, and by described reflection laser aiming to described imaging sensor 13, so that described imaging sensor 13 is based on laser
Imaging technique obtains the laser image on described UUT surface.
The image sequence of the laser image on UUT surface described in described imaging sensor 13 Real-time Collection.Described image
Sequence is arranged in order sequentially in time, thus reflects the moving situation of described UUT.Selectively, described imaging sensing
Device 13 can be cmos image sensor or ccd image sensor.
Described digital signal processor 20 receives the described image sequence that described imaging sensor 13 sends, and swashs described
The imaging sequence of light image is analyzed process sequentially in time, thus judges the motion conditions of described UUT,
And then obtain the velocity information of described UUT.
In the present embodiment, described microcontroller 30 is led to described digital signal processor 20 by SPI communication interface 50
Letter connects.The velocity information of described UUT is sent by described digital signal processor 20 by described SPI communication interface 50
To described microcontroller 30.
And, the preset speed of described velocity information with described speed switch 100 is contrasted by described microcontroller 30,
And adjust the duty of described speed switch 100: if described UUT velocity information less than described speed switch 100
Preset speed, the most described speed switch 100 is open mode；If described UUT velocity information more than described speed
The preset speed of switch 100, the most described speed switch 100 is closed mode.Refer to Fig. 5, be based on laser imaging shown in Fig. 2
The structural representation of microcontroller in the speed switch of technology.Preferably, described microcontroller 30 is MCU unit.
Further, in order to adjust the preset speed of described speed switch 100, the outside of described microcontroller 30 is all right
Being provided with the rotational potentiometer for realizing regulating preset speed, described rotational potentiometer is micro-with described by a/d converter 302
Controller 30 electrical connection is arranged, thus realizes the regulation of described preset speed.
Referring to Fig. 6, described output circuit 40 includes the photoelectrical coupler 41 being sequentially connected electrically setting and drives audion
42.Wherein, described photoelectrical coupler 41 electrically connects setting, described driving audion 42 and extraneous relay with described microcontroller 30
Device electrical connection is arranged.In the present embodiment, described output circuit 40 can be defeated under the control action of described microcontroller 30
Go out the signal of telecommunication thus regulate the movement velocity of described UUT by described outer relay.
Refer to Fig. 7, be the stream of speed detection method based on the speed switch based on technique of laser imaging shown in Fig. 2
Journey block diagram.Described speed detection method 200 specifically includes following steps:
S1, laser imaging assembly utilize laser to obtain the laser image of UUT；
S2, digital signal processor receive and process described laser image, and obtain the velocity information of described UUT；
S3, the duty of switch of regulating the speed based on described velocity information.
Specifically, in step sl, described laser imaging assembly utilizes technique of laser imaging to obtain described portion to be measured in real time
The laser image of part, and form the image sequence arranged sequentially in time.
In step s 2, the imaging sequence of described laser image is carried out by described digital signal processor sequentially in time
Relative analysis processes, thus obtains the velocity information of described UUT.
In step s3, the preset speed of described velocity information with described speed switch is contrasted, and adjust described
The duty of speed switch:
If the preset speed less than described speed switch of described UUT velocity information, the most described speed switch is
Open mode；
If the preset speed more than described speed switch of described UUT velocity information, the most described speed switch is
Closed mode.
Compared to prior art, the speed switch based on technique of laser imaging 100 of present invention offer and velocity measuring side
Method 200 uses non-contact laser imaging technique, and the linear motion of UUT or rotary motion all can be monitored to, with
Time material and the surface texture of UUT are not had particular/special requirement, extend speed switch the most greatly in industrial circle
Purposes.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of the spirit or essential attributes of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter
From the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all by fall in the implication of equivalency and scope of claim
Change is included in the present invention.Should not be considered as limiting involved claim by any reference in claim.
Although moreover, it will be appreciated that this specification is been described by according to embodiment, but the most each embodiment only wraps
Containing an independent technical scheme, this narrating mode of description is only that for clarity sake those skilled in the art should
Description can also be formed those skilled in the art through appropriately combined as an entirety, the technical scheme in each embodiment
May be appreciated other embodiments.
Claims (10)
1. a speed switch based on technique of laser imaging, it is characterised in that: include for UUT is carried out imaging
Laser imaging assembly, for obtaining the digital signal processor of described UUT exercise data, for judging that UUT is transported
Emotionally condition microcontroller and for outside output the signal of telecommunication output circuit, described laser imaging assembly, described numeral letter
Number processor, described microcontroller and described output circuit are sequentially connected with setting；
Described laser imaging assembly include the lasing light emitter for providing laser, for guided laser transmission lens subassembly, for
Absorb the imaging sensor of the image that described laser is formed and for controlling the control chip of described operation of laser sources power, described
Control chip electrically connects setting with described lasing light emitter, and described imaging sensor communicates to connect with described digital signal processor, institute
State the laser that lasing light emitter sends and guide and be radiated at described UUT surface, described imaging sensor by described lens subassembly
Catch the image on described UUT surface, and described image is sent to described digital signal processor.
Speed switch based on technique of laser imaging the most according to claim 1, it is characterised in that: described lens subassembly bag
Include opposing parallel spaced first plane mirror and the second plane mirror, and arrange with described imaging sensor relative spacing
Concavees lens, the laser that described first plane mirror and described lasing light emitter send is that 45 ° of angles are arranged, and described laser is through described the
One plane mirror reflexes to described second plane mirror, described second plane mirror by described laser with 30 ° of corner reflections to described portion to be measured
The surface of part.
Speed switch based on technique of laser imaging the most according to claim 2, it is characterised in that: described concavees lens receive
It is perpendicular to the reflection laser on described UUT surface, and described reflection laser is converged to described imaging sensor.
Speed switch based on technique of laser imaging the most according to claim 1, it is characterised in that: at described digital signal
Reason device is connected with described micro-controller communications by SPI communication interface.
Speed switch based on technique of laser imaging the most according to claim 1, it is characterised in that: described output circuit bag
Including and be sequentially connected electrically the photoelectrical coupler of setting and drive audion, described photoelectrical coupler electrically connects with described microcontroller and sets
Putting, described driving audion electrically connects setting with extraneous relay.
Speed switch based on technique of laser imaging the most according to claim 1, it is characterised in that: described microcontroller
Outside is additionally provided with the rotational potentiometer for realizing regulating preset speed, and described rotational potentiometer passes through a/d converter with described
Microcontroller electrical connection is arranged.
Speed switch based on technique of laser imaging the most according to claim 1, it is characterised in that: described lasing light emitter is sharp
Optical diode.
8. a speed detection method based on the speed switch based on technique of laser imaging described in claim 1, its feature
It is: comprise the steps:
A, laser imaging assembly utilize laser to obtain the laser image of UUT；
B, digital signal processor receive and process described laser image, and obtain the velocity information of described UUT；
C, the duty of switch of regulating the speed based on described velocity information.
Speed detection method the most according to claim 8, it is characterised in that: in stepb, described digital signal processor
The imaging sequence of described laser image is analyzed process sequentially in time, thus obtains the speed of described UUT
Degree information.
Speed detection method the most according to claim 8, it is characterised in that: in step c, by described velocity information with
The preset speed of described speed switch contrasts, and adjusts the duty of described speed switch:
If the preset speed less than described speed switch of described UUT velocity information, the most described speed switch is for opening
State；
If the preset speed more than described speed switch of described UUT velocity information, the most described speed switch is for closing
State.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610629074.0A CN106124794A (en) | 2016-08-03 | 2016-08-03 | A kind of speed switch based on technique of laser imaging and speed detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610629074.0A CN106124794A (en) | 2016-08-03 | 2016-08-03 | A kind of speed switch based on technique of laser imaging and speed detection method |
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| CN106124794A true CN106124794A (en) | 2016-11-16 |
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| CN201610629074.0A Pending CN106124794A (en) | 2016-08-03 | 2016-08-03 | A kind of speed switch based on technique of laser imaging and speed detection method |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60237371A (en) * | 1984-05-11 | 1985-11-26 | Mitsubishi Electric Corp | Optical speed detector |
| CN1985235A (en) * | 2004-04-29 | 2007-06-20 | 皇家飞利浦电子股份有限公司 | Relative movement sensor |
| CN201069443Y (en) * | 2007-06-26 | 2008-06-04 | 南京航空航天大学 | Rotary speed measuring device based on image recognition and location |
| CN201181924Y (en) * | 2007-09-21 | 2009-01-14 | 江西吉安电机制造有限责任公司 | Middle and small generator excitation integrated controller |
| CN101407985A (en) * | 2008-03-14 | 2009-04-15 | 松下电化住宅设备机器(杭州)有限公司 | Method for controlling safe on-off of washing machine |
| CN102128947A (en) * | 2010-01-14 | 2011-07-20 | 宝山钢铁股份有限公司 | Method and sensor for detecting relative sliding velocity between plate and mould in stamping process |
| CN102981009A (en) * | 2012-11-20 | 2013-03-20 | 北京工业大学 | Indirect speed measuring device |
| CN104345170A (en) * | 2013-07-29 | 2015-02-11 | 王启平 | Hydraulic generator rotating speed measuring system |
| CN205910209U (en) * | 2016-08-03 | 2017-01-25 | 南京信息工程大学 | Speed switch based on laser imaging technique |
-
2016
- 2016-08-03 CN CN201610629074.0A patent/CN106124794A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60237371A (en) * | 1984-05-11 | 1985-11-26 | Mitsubishi Electric Corp | Optical speed detector |
| CN1985235A (en) * | 2004-04-29 | 2007-06-20 | 皇家飞利浦电子股份有限公司 | Relative movement sensor |
| CN201069443Y (en) * | 2007-06-26 | 2008-06-04 | 南京航空航天大学 | Rotary speed measuring device based on image recognition and location |
| CN201181924Y (en) * | 2007-09-21 | 2009-01-14 | 江西吉安电机制造有限责任公司 | Middle and small generator excitation integrated controller |
| CN101407985A (en) * | 2008-03-14 | 2009-04-15 | 松下电化住宅设备机器(杭州)有限公司 | Method for controlling safe on-off of washing machine |
| CN102128947A (en) * | 2010-01-14 | 2011-07-20 | 宝山钢铁股份有限公司 | Method and sensor for detecting relative sliding velocity between plate and mould in stamping process |
| CN102981009A (en) * | 2012-11-20 | 2013-03-20 | 北京工业大学 | Indirect speed measuring device |
| CN104345170A (en) * | 2013-07-29 | 2015-02-11 | 王启平 | Hydraulic generator rotating speed measuring system |
| CN205910209U (en) * | 2016-08-03 | 2017-01-25 | 南京信息工程大学 | Speed switch based on laser imaging technique |
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