CN101424518B - Push button space detecting method and system - Google Patents
Push button space detecting method and system Download PDFInfo
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- CN101424518B CN101424518B CN2007101242224A CN200710124222A CN101424518B CN 101424518 B CN101424518 B CN 101424518B CN 2007101242224 A CN2007101242224 A CN 2007101242224A CN 200710124222 A CN200710124222 A CN 200710124222A CN 101424518 B CN101424518 B CN 101424518B
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Abstract
The invention is suitable for the detection field and provides a method and a system for detecting the spacing among keys. The method comprises the following steps: the upper surface image and the lower surface image of a keyboard are respectively collected, wherein the upper surface image is the image containing the arris of the keyboard, and the lower surface image is the image containing the keys of the keyboard; the upper surface image and the lower surface image are overlapped with each other to synthesize a piece of image simultaneously containing the arris and the keys of the keyboard; the spacing between the arris and the edge of the keys in the synthesized image is detected. In the embodiment of the invention, before the jointing technique of the keyboard, the spacing among the keys of the keyboard is detected, thereby the rejection of the keyboard is avoided and the production cost is reduced. The accurate spacing value among the keys can be obtained, so that the error is reduced, and the detecting results are more objective.
Description
Technical field
The invention belongs to detection range, relate in particular to a kind of detection method and system of press button gap.
Background technology
The portable terminal keyboard generally is divided into multiple working procedure in process of production, and the per pass operation is given a function or corresponding outward appearance for the portable terminal keyboard.In the per pass operation,, may cause the spacing disunity of each button in the portable terminal keyboard because the position deviation of equipment or operations of operators lack factors such as unitarity.When proceeding down one bonding process, because each press button gap disunity in the portable terminal keyboard causes the incompleteness of button font in the portable terminal keyboard, thereby makes this portable terminal keyboard become defective products.Therefore, manufacturer need detect the quality of portable terminal keyboard.
Prior art is generally directly observed the portable terminal keyboard by the operator, judges with feeling whether this portable terminal keyboard is qualified by rule of thumb.Cause asthenopia because the operator observes for a long time, be easy to cause flase drop or omission, and different operators also can provide different judged results to same product, and the operator can not provide the clearance distance value between the button accurately.Not only error is bigger, and is simultaneously also accurate inadequately.Simultaneously because prior art is that the portable terminal keyboard after fitting is detected, thereby work as because the press button gap disunity in the portable terminal keyboard, and when causing the portable terminal keyboard defective, with production cost, the waste resources of production of the manufacturer that is multiplied.
Summary of the invention
The object of the present invention is to provide a kind of detection method of press button gap, be intended to solve prior art, cause flase drop, false retrieval, problem that the detection degree of accuracy is low owing to adopt spacing between the button of manual detection portable terminal keyboard.
The present invention is achieved in that a kind of detection method of press button gap, and described method comprises the steps:
Employing is positioned at the upper surface of the last light source irradiation keyboard of keyboard top, the collection reflected light obtains the upper surface image of keyboard, employing is positioned at the lower surface of the following light source irradiation keyboard of keyboard below, acquisition of transmission light obtains the lower surface image of keyboard, described upper surface image is the image that comprises the rib of keyboard, described lower surface image is the image that comprises the button of keyboard, described keyboard comprises body, be positioned at the rib and the button that is positioned at the body back side in body front, the opposite position of described rib between the adjacent key at the described body back side, described body is the plastic parts of printing opacity, the junction of described body and button has tangible refraction action to light, the cross section of described rib is the semicircle shape projection, described body, the top and the button of rib are the plane;
With described upper surface image and the stack of described lower surface image, a synthetic width of cloth comprises the rib of keyboard and the image of button simultaneously;
Measure the distance values between the rib and button edge in the described synthetic image;
The distance values of described measurement and default normal pitch value are compared, and in error range, if then testing result is a non-defective unit, otherwise testing result is substandard products to the distance values of judging described measurement.
Another object of the present invention is to provide a kind of detection system of press button gap, described system comprises:
Image collecting device, be used to adopt the upper surface of the last light source irradiation keyboard that is positioned at the keyboard top, the collection reflected light obtains the upper surface image of keyboard, employing is positioned at the lower surface of the following light source irradiation keyboard of keyboard below, acquisition of transmission light obtains the lower surface image of keyboard, described upper surface image is the image that comprises the rib of keyboard, described lower surface image is the image that comprises the button of keyboard, described keyboard comprises body, be positioned at the rib and the button that is positioned at the body back side in body front, the opposite position of described rib between the adjacent key at the described body back side, described body is the plastic parts of printing opacity, the junction of described body and button has tangible refraction action to light, and the cross section of described rib is the semicircle shape projection, described body, the top and the button of rib are the plane;
The image overlay unit, the upper surface image and the lower surface image that are used for described image collecting device is gathered superpose, and a synthetic width of cloth comprises the rib of keyboard and the image of button simultaneously;
The spacing detecting unit is used for detecting synthetic image rib in described image overlay unit and the spacing between the button edge;
Described spacing detecting unit comprises:
The distance measurement unit is used for measuring synthetic image rib in described image overlay unit and the distance values between the button edge;
The spacing comparison judgment unit is used for distance values that described distance measurement unit is measured and compares with default normal pitch value, and whether the distance values of judging described measurement is in error range, if, then testing result is a non-defective unit, otherwise testing result is substandard products.
In embodiments of the present invention, the press button gap to keyboard before the attaching process of keyboard detects, and has avoided scrapping of whole keyboard, has reduced production cost.Accurately measure by spacing, can obtain the distance values accurately between each button, reduced error, make testing result more objective the button of keyboard.
Description of drawings
Fig. 1 is the overall appearance figure of the portable terminal keyboard that provides of the embodiment of the invention;
Fig. 2 is the realization flow figure of the detection method of the press button gap that provides of the embodiment of the invention;
Fig. 3 is the structural representation of the image collecting device that provides of the embodiment of the invention;
Fig. 4 is the design sketch of the upper surface image of the rib that comprises the portable terminal keyboard gathered;
Fig. 5 is the design sketch of the lower surface image of the button that comprises the portable terminal keyboard gathered;
Fig. 6 is that the structure of the detection system of the press button gap that provides of the embodiment of the invention is formed synoptic diagram.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In embodiments of the present invention, utilize optical imaging concept to gather the upper surface image and the lower surface image that comprises the button of keyboard of the rib that comprises keyboard respectively, to comprise keyboard rib upper surface image and to comprise the lower surface image of button of keyboard superimposed, a synthetic width of cloth comprises the image of the button of the rib of keyboard and keyboard simultaneously, by measuring the distance of rib and button edge in this image, can detect the spacing of the button of keyboard.
Keyboard in the embodiment of the invention comprises body, be positioned at the rib and the button that is positioned at the body back side in body front, the opposite position of rib between the adjacent key at the body back side wherein, this body is the plastic parts of printing opacity, the junction of this body and button has tangible refraction action to light, the cross section of rib is the semicircle shape projection, and the top and the button of body, rib are the plane.。Below be example with the portable terminal keyboard, describe the detection method of the press button gap that the embodiment of the invention provides in detail.
As shown in Figure 1, be typical portable terminal keyboard.It is made of body 10, rib 101 and the button 102 that is positioned at body 10 belows.Wherein body 10 is plastic parts of a kind of printing opacity.Rib 101 is positioned at the upper surface of body 10, and above the body 10 and between the interval of button 102 correspondence positions.The cross section of rib 101 is the semicircle shape projection, and the top of rib 101, body 10 and button 102 are the plane.
Because after the portable terminal keyboard has carried out attaching process, when whether the spacing that detects the button of portable terminal keyboard again meets the demands, production cost with the portable terminal keyboard that is multiplied, and the press button gap detection method that the embodiment of the invention provides is before the portable terminal keyboard is carried out attaching process, press button gap to this portable terminal keyboard detects, therefore, can save the production cost of portable terminal keyboard.
Fig. 2 shows the realization flow of the detection method of the press button gap that the embodiment of the invention provides, and details are as follows:
In step S101, utilize optical imaging concept to gather the upper surface image and the lower surface image of keyboard respectively.The upper surface image of gathering is the image that comprises the rib of keyboard, and the lower surface image of collection is the image that comprises the button of keyboard.
As shown in Figure 3, be the image collecting device that the embodiment of the invention adopts.This image collecting device comprises camera 1, be connected the camera lens 2 of camera 1 lower end, for portable terminal keyboard upper surface provides the last light source 3 of radiation source, be used for fixing the transparent bearing 4 of portable terminal keyboard, and the following light source 5 that radiation source is provided for portable terminal keyboard lower surface.In order to control the light source switch of light source 3 and following light source 5, this image collecting device can also comprise light source switch control module (scheming not shown).This light source switch control module realizes that by program it also can be by realizations such as hardware circuits.For fear of the detection effect of the press button gap of the edge effect portable terminal keyboard of transparent bearing 4, the length of this transparent bearing 4 and wide all greater than the length in the visual field of camera 1 and wide.In order to form uniform hot spot in keyboard surface, avoid stopping camera 1 images acquired from the interior ring of light source, last light source 3 is an annular light source.
When upper surface image of gathering the portable terminal keyboard and lower surface image, earlier the portable terminal keyboard is fixed on the transparent bearing 4 of image collecting device shown in Figure 3, shift out the visual field of camera 1 to avoid the portable terminal keyboard.
Start the light source switch control program, opening light source 3 under the control of light source switch control program earlier.Because the portable terminal keyboard is to be made of the rib 101 of body 10, convex and plane button 102, when ring light that last light source 3 sends is radiated on the portable terminal keyboard that is fixed on the transparent bearing 4, because the cross section of rib 101 is the projection of semicircle shape, according to reflection of light principle and image-forming principle, then the major part ring light that is radiated at rib 101 both sides is reflected away, can't enter camera lens 2, be black thereby make both sides imaging in camera 1 of rib.Because all the other places of portable terminal keyboard are the plane, according to reflection of light principle and image-forming principle, then the major part reflected light that is radiated at the ring light on this plane enters camera lens 2, makes the photoreceptor of camera 1 saturated, thereby makes planar section imaging in camera 1 be white.According to above-mentioned principle, the upper surface image of shining the portable terminal keyboard that also finally collects through last light source 3 is the image that comprises the rib of portable terminal keyboard.The periphery of rib 101 is black in this image, and all the other places are white in color.Its effect as shown in Figure 4.
In step S102, the upper surface image of the rib that comprises button that collects and the lower surface image that comprises the button of keyboard are handled, make the testing result of press button gap more accurate.
In order more obviously to give prominence on the border of rib in the upper surface image that makes collection and the button in the lower surface image, at first the upper surface image and the lower surface image of gathering are carried out binary conversion treatment, because binary conversion treatment is the known technology of image processing field, does not repeat them here.It is white that upper surface image after binary conversion treatment, rib 101 are rendered as it peripheral, and the centre is the hollow figure of brown.In order to make the rib 101 after the processing still is a unified continuous entity, then upper surface image is filled processing, is the known technology of image processing field owing to fill processing, does not repeat them here.Upper surface image after handle is owing to be subjected to the influence of noise or other factors, and less white portion also appears in the place beyond rib 101, upper surface image is carried out filtration treatment, to filter out above-mentioned white portion.Through after the above-mentioned processing, make the image of the rib that comprises the portable terminal keyboard of collection more complete, its border is more obviously and outstanding.In Flame Image Process, for clearer demonstration measured target, the bottom surface with image is treated to black usually, and measured target is treated to white.
In like manner, the lower surface image of the button that comprises the portable terminal keyboard gathered is also carried out binary conversion treatment, filled processing, filtration treatment and color treatments.Through after the above-mentioned processing, make the lower surface image of the button that comprises the portable terminal keyboard of collection more complete, its border is more obviously and outstanding.
In step S103, the upper surface image that will comprise the rib of keyboard superposes with the lower surface image that comprises the button of keyboard, and a synthetic width of cloth comprises the rib of keyboard and the image of button simultaneously.Because two width of cloth images being synthesized the technology of piece image is known technology, in embodiments of the present invention, no longer is described in greater detail.
In step S104, the spacing at rib and button edge in the image after detection is synthetic.When needs detect spacing between rib 101 and the button 102 whether during conformance with standard, measure the distance values between rib 101 and the button 102 earlier.Again the distance values that measures and default normal pitch value are compared, judge that the distance values that measures is whether in the error allowed band, if then this portable terminal keyboard is a non-defective unit; If not, then this portable terminal keyboard is substandard products.
In step S105, the report testing result.As above-mentioned testing result being shown by display device (as display etc.), as when testing result is non-defective unit, display device shows and OK gives a green light simultaneously.When if testing result is substandard products, display device shows NG, sends out a warning simultaneously.Also can adopt audio output device to give the operator, be convenient to the operator non-defective unit and substandard products are classified above-mentioned test results report.In order to save human resources, can also directly non-defective unit and substandard products be classified by control program control relevant hardware directly according to testing result.
Fig. 6 shows the structure of the detection system of the press button gap that the embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention.
For the rib and the spacing between the button edge that make detection more accurate, to reach best testing result, the upper surface image of the rib that comprises the portable terminal keyboard that graphics processing unit 30 is gathered image collecting device 20 respectively and the lower surface image that comprises the button of portable terminal keyboard are carried out binary conversion treatment successively, are filled processing, filtration treatment and color treatments, its concrete processing procedure does not repeat them here as mentioned above.
The upper surface image of the rib that comprises the portable terminal keyboard after graphics processing unit 30 is handled in image overlay unit 40 superposes with the lower surface image that comprises the button of portable terminal keyboard, and a synthetic width of cloth comprises the rib of portable terminal keyboard and the image of button simultaneously.
Rib in the image that 50 pairs of image overlay unit of spacing detecting unit 40 synthesize and the spacing between the button detect.When needs detect spacing between rib 101 and the button 102 whether during conformance with standard, earlier measure distance values between rib 101 and the button 102 by distance measurement unit 501, the distance values that distance measurement unit 501 is measured by spacing comparison judgment unit 502 compares with default normal pitch value again, judges that the distance values that measures is whether in the error allowed band.
The testing result of test results report unit 60 report spacing comparison judgment units 502.Promptly when spacing comparison judgment unit 502 judged that the distance values measured is in error range, test results report unit 60 these portable terminal keyboards of report were non-defective unit; When spacing comparison judgment unit 502 judged that the distance values measured is not in error range, test results report unit 60 these portable terminal keyboards of report were substandard products.It can be directly shows by display device that with the testing result of spacing comparison judgment unit 502 as when testing result is non-defective unit, display device shows OK, gives a green light simultaneously.When if testing result is substandard products, display device shows NG, sends out a warning simultaneously.Also can adopt audio output device to give the operator, be convenient to the operator non-defective unit and substandard products are classified above-mentioned test results report.In order to save human resources, also can directly non-defective unit and substandard products be classified by control program control relevant hardware directly according to testing result.
In embodiments of the present invention, the press button gap to button before the attaching process of button detects, thereby has avoided scrapping of button, has reduced the production cost of enterprise.Accurately measure by spacing, can obtain the distance values accurately between each button, make criterion unified, error is reduced keyboard.Adopt the spacing detection system to replace manual detection, not only saved human resources, also make testing result more objective.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the detection method of a press button gap is characterized in that, described method comprises the steps:
Employing is positioned at the upper surface of the last light source irradiation keyboard of keyboard top, the collection reflected light obtains the upper surface image of keyboard, employing is positioned at the lower surface of the following light source irradiation keyboard of keyboard below, acquisition of transmission light obtains the lower surface image of keyboard, described upper surface image is the image that comprises the rib of keyboard, described lower surface image is the image that comprises the button of keyboard, described keyboard comprises body, be positioned at the rib and the button that is positioned at the body back side in body front, the opposite position of described rib between the adjacent key at the described body back side, described body is the plastic parts of printing opacity, the junction of described body and button has tangible refraction action to light, the cross section of described rib is the semicircle shape projection, described body, the top and the button of rib are the plane;
With described upper surface image and the stack of described lower surface image, a synthetic width of cloth comprises the rib of described keyboard and the image of button simultaneously;
Measure the distance values between the rib and button edge in the described synthetic image;
The distance values of described measurement and default normal pitch value are compared, and in error range, if then testing result is a non-defective unit, otherwise testing result is substandard products to the distance values of judging described measurement.
2. the method for claim 1 is characterized in that, before the step with described upper surface image and the stack of described lower surface image, described method also comprises the steps:
Respectively described upper surface image and described lower surface image are carried out binary conversion treatment, fill and handle, and/or filtration treatment.
3. method as claimed in claim 1 or 2, it is characterized in that, compare with the normal pitch value of presetting in distance values described measurement, whether the distance values of judging described measurement is in error range, if then testing result is a non-defective unit, otherwise, testing result is after the step of substandard products, and described method also comprises the steps:
The report testing result.
4. the detection system of a press button gap is characterized in that, described system comprises:
Image collecting device, be used to adopt the upper surface of the last light source irradiation keyboard that is positioned at the keyboard top, the collection reflected light obtains the upper surface image of keyboard, employing is positioned at the lower surface of the following light source irradiation keyboard of keyboard below, acquisition of transmission light obtains the lower surface image of keyboard, described upper surface image is the image that comprises the rib of keyboard, described lower surface image is the image that comprises the button of keyboard, described keyboard comprises body, be positioned at the rib and the button that is positioned at the body back side in body front, the opposite position of described rib between the adjacent key at the described body back side, described body is the plastic parts of printing opacity, the junction of described body and button has tangible refraction action to light, and the cross section of described rib is the semicircle shape projection, described body, the top and the button of rib are the plane;
The image overlay unit, the upper surface image and the lower surface image that are used for described image collecting device is gathered superpose, and a synthetic width of cloth comprises the rib of keyboard and the image of button simultaneously;
The spacing detecting unit is used for detecting synthetic image rib in described image overlay unit and the spacing between the button edge;
Described spacing detecting unit comprises:
The distance measurement unit is used for measuring synthetic image rib in described image overlay unit and the distance values between the button edge;
The spacing comparison judgment unit is used for distance values that described distance measurement unit is measured and compares with default normal pitch value, and whether the distance values of judging described measurement is in error range, if, then testing result is a non-defective unit, otherwise testing result is substandard products.
5. system as claimed in claim 4, it is characterized in that, described image collecting device comprises camera, be connected in the camera lens of described camera lower end, be positioned at the last light source of described camera lens below, be positioned at the described transparent bearing that is used for fixing keyboard of going up the light source below, be positioned at the following light source of the below of described transparent bearing.
6. system as claimed in claim 5 is characterized in that, described upward light source is an annular light source.
7. system as claimed in claim 5 is characterized in that, the length of described transparent bearing and wide all greater than the length in the visual field of described camera and wide.
8. as the described system of the arbitrary claim of claim 4 to 7, it is characterized in that described system also comprises:
Graphics processing unit is used for respectively the upper surface image and the lower surface image of described image collecting device collection being carried out binary conversion treatment, and fill and handle, and/or filtration treatment.
9. as the described system of the arbitrary claim of claim 4 to 7, it is characterized in that described system also comprises:
The test results report unit is used to report the testing result of described spacing detecting unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101242224A CN101424518B (en) | 2007-10-31 | 2007-10-31 | Push button space detecting method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101242224A CN101424518B (en) | 2007-10-31 | 2007-10-31 | Push button space detecting method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101424518A CN101424518A (en) | 2009-05-06 |
| CN101424518B true CN101424518B (en) | 2011-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007101242224A Expired - Fee Related CN101424518B (en) | 2007-10-31 | 2007-10-31 | Push button space detecting method and system |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5755935B2 (en) * | 2011-05-13 | 2015-07-29 | 富士機械製造株式会社 | Component pitch measuring apparatus and component pitch measuring method |
| CN103727883B (en) * | 2014-01-03 | 2016-08-17 | 苏州吉视电子科技有限公司 | Utilize method and the device thereof of button clearance measurement relative height of keyboard |
| CN106482653A (en) * | 2015-08-28 | 2017-03-08 | 华硕电脑股份有限公司 | Optical measurement device and gap method for measurement |
| CN107131830B (en) * | 2017-06-23 | 2023-10-03 | 广东宇星众鼎精密科技有限公司 | Key testing equipment |
| CN108732190A (en) * | 2018-04-11 | 2018-11-02 | 大连中启伟创科技有限公司 | A kind of detection method and detecting system of the air-conditioning panel based on machine vision |
| TWI670683B (en) * | 2018-06-22 | 2019-09-01 | 技嘉科技股份有限公司 | Keyboard inspection method and inspection system same |
| CN110705551B (en) * | 2019-10-09 | 2022-05-20 | 北京百度网讯科技有限公司 | Key position identification method and device, electronic equipment and storage medium |
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| CN2431635Y (en) * | 2000-08-09 | 2001-05-23 | 英业达股份有限公司 | Keyboard key checking device |
| CN1637622A (en) * | 2003-12-30 | 2005-07-13 | 施乐公司 | Real-time web inspection method and apparatus using combined reflected and transmitted light images |
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2007
- 2007-10-31 CN CN2007101242224A patent/CN101424518B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2431635Y (en) * | 2000-08-09 | 2001-05-23 | 英业达股份有限公司 | Keyboard key checking device |
| CN1637622A (en) * | 2003-12-30 | 2005-07-13 | 施乐公司 | Real-time web inspection method and apparatus using combined reflected and transmitted light images |
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| JP特开平10-221017A 1998.08.21 |
| JP特开平9－204527A 1997.08.05 |
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