CN207850293U - A kind of elastic heat dissipating piece formal parameter self-operated measuring unit based on machine vision - Google Patents
A kind of elastic heat dissipating piece formal parameter self-operated measuring unit based on machine vision Download PDFInfo
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- CN207850293U CN207850293U CN201820125162.1U CN201820125162U CN207850293U CN 207850293 U CN207850293 U CN 207850293U CN 201820125162 U CN201820125162 U CN 201820125162U CN 207850293 U CN207850293 U CN 207850293U
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- cooling fin
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- measuring unit
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Abstract
The utility model discloses a kind of elastic heat dissipating piece formal parameter self-operated measuring unit based on machine vision, including light source module, industrial lens, image capture module and the image processor for being equipped with automatic measurement software, light source module is for irradiating cooling fin to be measured, industrial lens are for shooting cooling fin to be measured, the end face picture data of the cooling fin to be measured of image capture module acquisition shooting carries out image procossing by automatic measurement software and measures external form of cooling fin size.The utility model is by the way that light source module, industrial lens and image capture module to be mounted on motorized precision translation stage, so that having relative displacement between light source module, industrial lens and image capture module and static cooling fin to be measured when movement, the different location of cooling fin is irradiated, shooting, collecting its picture data, it is sent into image processor, key position point coordinates is extracted after carrying out image procossing by automatic measurement software, to realize the measurement to cooling fin different location appearance and size.
Description
Technical field
The utility model is related to the cooling fin machinery dimension automatic measuring devices in large-scale diesel engine cooling system, especially relate to
And a kind of elastic heat dissipating piece formal parameter self-operated measuring unit based on machine vision.
Background technology
For the cooling fin in the cooling system of the mechanical equipments such as large-scale diesel engine, periodicity is generally rolled by scale copper
Bending.In use, cooling fin is welded between two thin plates, increase the area that cooling system is contacted with air, to reach good
Good heat dissipation effect.Each period vertex of welding process requirement, cooling fin should be soldered properly with thin plate, in order to reach
This requirement needs appearance and size of the cooling fin in rolling to accurately control, and required precision is typically about 50 microns.Traditional control
Method processed is to carry out contact type measurement using artificial vernier caliper after rolling.Because elasticity is very big after cooling fin rolling, tradition
Contact measurement method can not ensure measurement accuracy.
Invention content
Outside the purpose of this utility model is to overcome a kind of above-mentioned insufficient elastic heat dissipating piece based on machine vision of offer
Shape parameter self-operated measuring unit, it is characterised in that including light source module, industrial lens, image capture module and be equipped with automatic survey
The image processor of software is measured, the light source module is for irradiating cooling fin to be measured, and industrial lens are for shooting to be measured dissipate
Backing, the end face that the acquisition of described image acquisition module illuminates the cooling fin to be measured of postindustrial camera lens shooting by light source module are shone
Sheet data, the picture data are sent into image processor, and carrying out image procossing by automatic measurement software measures external form of cooling fin ruler
It is very little.
Further, further include motorized precision translation stage, described image acquisition module is on motorized precision translation stage, electric translation
The movement of platform is controlled by the Survey Software in image processor.
Preferably, the light source module uses the plurality of LEDs annular light source equipped with diffusing panel.
Specifically, the light source module is fixed in industrial lens, and industrial lens are mounted on image capture module.
Preferably, the industrial lens use high-resolution telecentric lens.
Preferably, described image acquisition module uses high-resolution CCD CMOS cameras.
Specifically, motorized precision translation stage includes stepper motor, electric machine controller, motor driver, is provided with slide unit and slide unit
The straight line slide unit module of guide rail, the electric machine controller provide control signal to stepper motor, and motor driver carries out signal
Driving motor rotates after amplification, when motor rotates, slide unit is driven to be moved horizontally along slide unit guide rail, is mounted on slide unit to drive
Image capture module, industrial lens and light source module movement, the slide unit guide rail initiating terminal and clearing end are respectively arranged with position
Sensor is set, the position sensor differentiates that slide unit and image capture module, industrial lens and the light source module installed thereon are
The no slide unit guide rail initiating terminal and clearing end for moving to measurement.
Preferably, further include part clamp, placed with the posture kept flat naturally for cooling fin to be measured and ensure to measure
Reliably.
The utility model by using light source module, industrial lens, the image capture module on motorized precision translation stage,
Cooling fin to be measured is irradiated, is shot and then acquires its picture data so that between image capture module and cooling fin
There is relative displacement, which is sent into image processor, and key position is extracted after carrying out image procossing by automatic measurement software
Point coordinates, to realize the measurement to cooling fin different location appearance and size.Especially by by light source module, industrial lens and image
Acquisition module be mounted on motorized precision translation stage on so that translation stage move when light source module, industrial lens and image capture module and
There is relative displacement between static cooling fin to be measured, be irradiated, shot with the different location to cooling fin and then acquires it
Picture data.Part clamp ensures that cooling fin is positioned over the posture kept flat naturally on part clamp, and slide unit is facilitated to be led from slide unit
Rail initiating terminal to clearing end slides reliable measurements.Light source module uses the plurality of LEDs annular light source equipped with diffusing panel, plurality of LEDs
It is applied in combination, the uniformity that light is sent out will be got well, and the more uniform light source that shines subsequently uses diffusing panel or other optical elements to carry out
Simpler when processing, the light that such light source is sent out is irradiated to reflective very strong cooling fin (metallic copper material system to be measured
At) on, the effect of similar window reflections sunlight will not be just formed, this effect can influence the shooting and processing of subsequent image.Work
Industry camera lens uses high-resolution telecentric lens, when defocus is imaged due to cooling fin to be measured is inaccurate because focusing, diffusion of point image spot
Center be still object point center, in this way when later image is handled, the accurate location that object can be calculated by algorithm is (or other
Geometric parameter).Image capture module uses high-resolution CCD CMOS cameras, and CCD noises are low, are imaged wide dynamic range,
CMOS high resolutions are satisfied by the precision of Image Acquisition.
Description of the drawings
Fig. 1 measuring device structural schematic diagrams；
Fig. 2 measuring devices shoot cooling fin local pictures；
Fig. 3 measuring device measurement flow charts；
Software interface figure when Fig. 4 computer disposal images.
In figure：
1- computers, 2- image capture modules, 3- light source modules, 4- industrial lens, 5- part clamps, 6- electric translations
Platform, 7- automatic measurement softwares.
Specific implementation mode
The utility model is further illustrated with reference to the accompanying drawings and embodiments.
Embodiment one：
As shown in Figure 1, a kind of elastic heat dissipating piece formal parameter self-operated measuring unit based on machine vision, it is characterised in that
Including light source module, industrial lens, image capture module and the image processor for being equipped with automatic measurement software, in the present embodiment
Image processor is computer, and the light source module is for irradiating cooling fin to be measured, and industrial lens are for shooting to be measured dissipate
Backing, the end face that the acquisition of described image acquisition module illuminates the cooling fin to be measured of postindustrial camera lens shooting by light source module are shone
Sheet data, the picture data are sent into computer, extract key position point coordinates after carrying out image procossing by automatic measurement software, survey
Measure external form of cooling fin size.As shown in Fig. 2, the extraction of key position point judges, using seeking image local peak i.e. the
Key position point (x1, y1), the second key position point (x2, y2), third key position point (x3, y3), the 4th key position
XOY plane (being paper plane in the present embodiment) coordinate value method of point (x4, y4) obtains, and acquires the first key position point and third
The spacing M1 (M1=x3-x1) of key position point acquires the spacing M2 (M2=of the second key position point and the 4th key position point
x4-x2)；The vertical interval L1 (L1=y1-y2) of first key position point and the second key position point, third key position point and
The vertical interval L2 (L2=y3-y4) of 4th key position point measures always the coordinate value and consecutive points of N number of key position point
Spacing, wherein N are positive integer, measure external form of cooling fin size.
As shown in Figure 1, the elastic heat dissipating piece formal parameter self-operated measuring unit of the utility model further includes motorized precision translation stage,
Described image acquisition module is mounted on motorized precision translation stage, and the movement of motorized precision translation stage is by the Survey Software control in image processor
System.
The light source module is fixed in industrial lens, and industrial lens are mounted on image capture module.Work as electric translation
When platform moves, image capture module movement is driven so that have relative displacement between image capture module and cooling fin, with realization pair
The measurement of cooling fin different location appearance and size.
Embodiment two：
The elastic heat dissipating piece formal parameter self-operated measuring unit of the utility model, with embodiment one the difference is that described
Light source module uses the plurality of LEDs annular light source equipped with diffusing panel.Find that luminous more uniform light source is follow-up by test of many times
More simple and reliable when being handled using diffusing panel or other optical elements, radiation response is better, and plurality of LEDs is applied in combination,
Irradiate uniformity is better than single or multiple incandescent lamps.Because fin material to be measured is copper, surface is smooth and reflectivity
It is high.If lighting source has stronger directionality, certain specific positions in measurement process can form similar mirror-reflection, from
And make the extraction of camera partial exposure excessive influence key position point (source location).And it is disorderly and unsystematic to diffuse light direction, it can
To irradiate cooling fin to be measured (target) from all angles, and the light in each direction is not strong, and target illumination is uniform, Bu Huiyin
Play strong mirror-reflection.The effect of diffusing panel is that the light of LED light source is become the better diffused light of uniformity, more preferable to obtain
Illuminating effect.
Remaining content is the same as embodiment one.
Embodiment three：
The elastic heat dissipating piece formal parameter self-operated measuring unit of the utility model, with embodiment two the difference is that described
Industrial lens use high-resolution telecentric lens.Telecentric lens are the optical lens designed based on telecentric beam path, main feature
When being that defocus is imaged due to cooling fin to be measured (i.e. object to be measured) is inaccurate because focusing, the center of diffusion of point image spot is still in object point
The heart can calculate the accurate location (or other geometric parameters) of object in this way when later image is handled by algorithm, therefore,
In the utility model high-precision Optical imaging measurement to be achieved telecentric lens are used for guarantee measurement accuracy.
Remaining content is the same as embodiment two.
Example IV：
The elastic heat dissipating piece formal parameter self-operated measuring unit of the utility model, with embodiment three the difference is that described
Image capture module uses high-resolution CCD CMOS cameras.In general, industrial camera used at present uses CCD
Or two kinds of cmos sensor, CCD noises are low, are imaged wide dynamic range, but price is more expensive, and the resolution ratio that can reach does not have CMOS
It is high.In the present embodiment because using active optical illumination (LED), it is not high to noise requirements, using both can, as long as
Resolution ratio is enough.
Remaining content is the same as embodiment three.
Embodiment five：
The elastic heat dissipating piece formal parameter self-operated measuring unit of the utility model, it is with example IV the difference is that electronic
Translation stage specifically includes stepper motor, electric machine controller, motor driver, the straight line slide unit mould for being provided with slide unit and slide unit guide rail
Group, electric machine controller are an electronic devices, it receives the instruction that computer is sent out with RS485 agreements, and motor is given after conversion
Driver；Motor driver is a power amplifying device, its amplified signal is rotated with driving motor；Motor is executing agency,
Slide unit module horizontal rectilinear motion is driven when rotation；Slide unit module is a mechanical part, it converts the rotary motion of motor
For horizontal movement.The electric machine controller provides control signal to stepper motor, and motor driver is amplified control signal
Driving motor rotates afterwards, when motor rotates, slide unit is driven to be moved horizontally along slide unit guide rail, to drive the figure being mounted on slide unit
As acquisition module, industrial lens and light source module movement, to realize the measurement to appearance and size at cooling fin different location；It is described
Slide unit guide rail initiating terminal and clearing end are respectively set position sensor, and the position sensor differentiates slide unit and installs thereon
Whether image capture module, industrial lens and light source module move to the slide unit guide rail initiating terminal and clearing end of measurement.Although logical
Computer is crossed to obtaining the initiating terminal that can also be measured of processing of image, but using position sensor judge it is simpler with
Reliably.The position sensor is usually mechanical contact, when the contact of sensor is contacted by slide unit, the electrode on sensor
Short circuit, you can judge that slide unit arrived designated position, at this moment drive the signal of slide unit to stop, slide unit is in place, can start to measure；
Photoelectric position sensor can be used.
It further include part clamp.When measurement, cooling fin to be measured is lain on part clamp naturally, fixed.It is electronic flat
Moving stage drives image capture module, industrial lens and light source module, and the survey to cooling fin different parts has been realized in translational motion together
Amount.
The same example IV of remaining content.
As shown in figure 3, for the elastic heat dissipating piece formal parameter self-operated measuring unit measurement flow chart of the utility model, measure
Flow is as follows：
Step 1：When starting to measure, the automatic measurement software in computer starts motorized precision translation stage and detects self-contained position
Sensor is set, differentiates whether slide unit and image capture module, industrial lens and the light source module installed thereon move to measurement
Initiating terminal, if it is not, then it is driven to move to the initiating terminal of measurement；If it is, carrying out in next step.
Step 2：Automatic measurement software in computer starts light source module and illuminates cooling fin to be measured, starts Image Acquisition mould
Block shoots the picture of the end face of cooling fin.
Step 3：Image capture module send the image of cooling fin to computer, and figure is carried out by automatic measurement software therein
As processing, the coordinate of key position point is extracted, the appearance and size of cooling fin is measured.
Step 4：Automatic measurement software differentiates whether motorized precision translation stage reaches measurement terminating point, if it is not, then return to step 2
It repeats；If so, carrying out again in next step.
Step 5：Automatic measurement software carries out data processing to external form of cooling fin dimension data, including averages, is maximum
Value, minimum value, tolerance etc..
Step 6：Automatic measurement terminates.
As shown in figure 4, the computer disposal figure of the elastic heat dissipating piece formal parameter self-operated measuring unit for the utility model
As when software interface figure.In a computer, in interface, left side is the control area of motorized precision translation stage to automatic measurement software installation
And data display area；Left side is the display area of the heat dissipation picture of image capture module current shooting.
Claims (8)
1. a kind of elastic heat dissipating piece formal parameter self-operated measuring unit based on machine vision, it is characterised in that including light source die
Block, industrial lens, image capture module and the image processor for being equipped with automatic measurement software, the light source module is for irradiating
Cooling fin to be measured, industrial lens are shone for shooting cooling fin to be measured, the acquisition of described image acquisition module by light source module
The end face picture data of the cooling fin to be measured of bright postindustrial camera lens shooting, which is sent into image processor, by automatic
Survey Software carries out image procossing and measures external form of cooling fin size.
2. elastic heat dissipating piece formal parameter self-operated measuring unit according to claim 1, it is characterised in that further include electronic
Translation stage, described image acquisition module are mounted on motorized precision translation stage, and the movement of motorized precision translation stage is by the survey in image processor
Measure software control.
3. elastic heat dissipating piece formal parameter self-operated measuring unit according to claim 2, it is characterised in that the light source die
Block uses the plurality of LEDs annular light source equipped with diffusing panel.
4. elastic heat dissipating piece formal parameter self-operated measuring unit according to claim 3, it is characterised in that the light source die
Block is fixed in industrial lens, and industrial lens are mounted on image capture module.
5. elastic heat dissipating piece formal parameter self-operated measuring unit according to claim 4, it is characterised in that the industry mirror
Head uses high-resolution telecentric lens.
6. elastic heat dissipating piece formal parameter self-operated measuring unit according to claim 5, it is characterised in that described image is adopted
Collect module and uses high-resolution CCD CMOS cameras.
7. elastic heat dissipating piece formal parameter self-operated measuring unit according to claim 6, it is characterised in that motorized precision translation stage
Including stepper motor, electric machine controller, motor driver, the straight line slide unit module for being provided with slide unit and slide unit guide rail, the electricity
Machine controller provides control signal to stepper motor, and motor driver is amplified rear driving motor to signal and rotates, and motor turns
When dynamic, slide unit is driven to be moved horizontally along slide unit guide rail, to drive the image capture module being mounted on slide unit, industrial lens and
Light source module moves, and position sensor is respectively set in the slide unit guide rail initiating terminal and clearing end, and the position sensor is sentenced
Whether the other slide unit and image capture module 2 installed thereon, industrial lens 4 and light source module 3 move to the slide unit guide rail of measurement
Initiating terminal and clearing end.
8. elastic heat dissipating piece formal parameter self-operated measuring unit according to claim 7, it is characterised in that further include part
Fixture.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820125162.1U CN207850293U (en) | 2018-01-24 | 2018-01-24 | A kind of elastic heat dissipating piece formal parameter self-operated measuring unit based on machine vision |
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| CN201820125162.1U CN207850293U (en) | 2018-01-24 | 2018-01-24 | A kind of elastic heat dissipating piece formal parameter self-operated measuring unit based on machine vision |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737875A (en) * | 2019-02-22 | 2019-05-10 | 深圳精创视觉科技有限公司 | Polaroid dimension measuring device |
| CN110595362A (en) * | 2019-09-29 | 2019-12-20 | 上海交通大学 | Sealing strip size detection equipment and method based on visual identification |
-
2018
- 2018-01-24 CN CN201820125162.1U patent/CN207850293U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737875A (en) * | 2019-02-22 | 2019-05-10 | 深圳精创视觉科技有限公司 | Polaroid dimension measuring device |
| CN110595362A (en) * | 2019-09-29 | 2019-12-20 | 上海交通大学 | Sealing strip size detection equipment and method based on visual identification |
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