CN105527301B - The detecting system and detection method of the voltage class of electric heating tube - Google Patents
The detecting system and detection method of the voltage class of electric heating tube Download PDFInfo
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- CN105527301B CN105527301B CN201610081153.2A CN201610081153A CN105527301B CN 105527301 B CN105527301 B CN 105527301B CN 201610081153 A CN201610081153 A CN 201610081153A CN 105527301 B CN105527301 B CN 105527301B
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
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Abstract
The present invention provides a kind of detecting system and detection method of the voltage class of electric heating tube, which includes：There is ceramic ring and voltage class specification on electric heating tube, set reference specification in the controller；The two poles of the earth that marginal position positioning unit makes first camera position electric heating tube are controlled by controller, also control speckle locating unit makes first camera position ceramic ring, also control the pixel value for making first camera detect ceramic ring as number statistic unit, and comparison pixels value and reference specification；Second camera is set to detect voltage class specification by controller controlling profile matching unit, and compare voltage class specification and reference specification, if pixel value and voltage class specification are matched with reference specification, it is then certified products, if any in pixel value and voltage class specification mismatch with reference specification, for defective work.The present invention provides a kind of detecting systems and detection method of the voltage class of electric heating tube, improve detection stability and detection efficiency, reduce omission factor and false drop rate.
Description
Technical field
The present invention relates to the detection field of electric heating tube, the detecting system of especially a kind of voltage class of electric heating tube and
Detection method.
Background technology
Heating element based on electric heating tube is widely used in every field, especially household electric appliances.Electricity adds
Heat pipe is tubular electrothermal element, is made of metal tube, spiral resistance wire and crystal magnesium oxide powder etc..In general, stainless
It is evenly distributed high temperature resistance silk in steel seamless pipe, heat conductivility and the good crystallization oxygen of insulation performance are inserted in gap section
Change magnesium powder, advanced structure, the thermal efficiency is high, and fever is uniform.And when have in high temperature resistance silk electric current by when, the heat of generation passes through
Magnesia powder is spread to metal tube surface, then is transmitted in heated object or air, to achieve the purpose that heating.It is suitable for
Heat air, oil, water, chemical mediator, hot-die, fused salt, alkali and low-melting alloy etc..
It, can be there are many mode classification for electric heating tube：
(1) according to the occupation mode of electric heating tube, electric heating tube has cast aluminium (electric iron), indentation aluminum component (grill), does
It burns and is used (air conditioner) etc. under (barbecue tube), heating water (insulating pot), heating oily (fryer), blowing state；
(2) according to the tubing of electric heating tube, Bundy tube, aluminum pipe, copper pipe, stainless steel tube, Ying Gelai pipes etc. can be divided into；
(3) according to the temperature under electric heating tube use state, cryotronl, high temperature pipe can be divided into.
It is cased with ceramic ring on the two poles of the earth of electric heating tube, voltage class specification printed words are printed on tube body.It can be from the color of ceramic ring
Or specification printed words judge the voltage class of the electric heating tube.Row color sensor commonly used in the trade detects electric heating tube porcelain at present
The color of ring is distinguished.But in the actual production process, due to ceramic ring position deviation, ceramic ring color have aberration etc., cause
It is bad to detect stability, False Rate is high.Meanwhile electric heating tube product voltage class specification printed words distinguish main manually naked eyes
Mode detects.However, electric heating tube is in process of production because voltage class specification printed words are easy to obscure, it is to perplex industry always
The problem of producer.Voltage class specification printed words are printed with type matrix, and often difference only has a number sometimes between product
Word, in the past mode manually detect differentiation product specification, efficiency is very low, and cannot ensure the accuracy of sorting.
Invention content
The purpose of the present invention is to provide a kind of detecting systems and detection method of the voltage class of electric heating tube, to solve
Existing detection stability is poor, False Rate is high and inefficient problem.
In order to achieve the above object, the present invention provides a kind of detection methods of the voltage class of electric heating tube, including：
Product sample to be detected is established, the product sample includes at least one electric heating tube, the electric heating tube
The two poles of the earth be arranged with ceramic ring respectively, there is voltage class specification, in the controller setting reference on the tube body of the electric heating tube
Specification；
The electric heating tube is placed in the visual field of first camera, the electric heating tube is irradiated by first light source, is led to
It crosses the controller and controls the position that a marginal position positioning unit makes the two poles of the earth of first camera positioning electric heating tube, also control one
Speckle locating unit makes first camera position the position of ceramic ring on the two poles of the earth, and also controlling a pixels statistics unit makes first camera detect
The pixel value of ceramic ring, and compare whether the pixel value matches with reference specification；
The electric heating tube is placed in the visual field of second camera, the electric heating tube is irradiated by second light source, is led to
Crossing the controller also controlling profile matching unit makes second camera detect the voltage class specification on electric heating tube tube body, and compares
Whether the voltage class specification is matched with reference specification, if the pixel value and voltage class specification with reference specification
Match, then detect certified products, if any in the pixel value and voltage class specification mismatch with reference specification, detects not
Certified products.
Further, it is additionally provided in the controller with reference to spacing threshold, the edge is controlled by the controller
Between position positioning unit makes the position at the two poles of the earth of first camera positioning electric heating tube and obtains the spacing between the two poles of the earth, and comparison is somebody's turn to do
Away from whether falling within the section with reference to spacing threshold, if within and the pixel value and voltage class specification and reference gauge
Lattice match, then detect certified products, if any not within and in the pixel value and voltage class specification and reference specification is not
Matching, then detect defective work.
Further, between spacing or outer ledge of the spacing between described the two poles of the earth between the inside edge at the two poles of the earth
Spacing.
Further, a controller by one drag two pattern respectively with a first camera system and one second
Camera system connects.
Further, the color of the ceramic ring is selected from the color of three kinds of different colour systems.
The present invention also provides a kind of detecting systems of the voltage class of electric heating tube, including：
First camera system, including first camera, marginal position positioning unit, speckle locating unit, pixels statistics unit
With the first light source for irradiating electric heating tube to be detected, the first camera respectively with the marginal position positioning unit,
Speckle locating unit is connected with pixels statistics unit；
Second camera system, including second camera, outline unit and for irradiating electric heating tube to be detected
Two light sources, the second camera are connect with outline unit；
Controller, respectively with the marginal position positioning unit, speckle locating unit, pixels statistics unit and outline
Unit connects, and reference specification is provided in the controller；
Wherein, controlling the marginal position positioning unit by the controller makes first camera position the two of electric heating tube
The position of pole also controls the position that the speckle locating unit makes first camera position ceramic ring on the two poles of the earth, also controls the pixel
Statistic unit makes the pixel value of first camera detection ceramic ring, and compares whether the pixel value matches with reference specification, passes through institute
Stating controller and also controlling the outline unit makes voltage class specification on second camera detection electric heating tube tube body, and compares
Whether the voltage class specification is matched with reference specification, if the pixel value and voltage class specification with reference specification
Match, then detect certified products, if any in the pixel value and voltage class specification mismatch with reference specification, detects not
Certified products.
Further, it is additionally provided in the controller with reference to spacing threshold, the edge is controlled by the controller
Between position positioning unit makes the position at the two poles of the earth of first camera positioning electric heating tube and obtains the spacing between the two poles of the earth, and comparison is somebody's turn to do
Away from whether falling within the section with reference to spacing threshold, if within and the pixel value and voltage class specification and reference gauge
Lattice match, then detect certified products, if any not within and in the pixel value and voltage class specification and reference specification is not
Matching, then detect defective work.
Further, between spacing or outer ledge of the spacing between described the two poles of the earth between the inside edge at the two poles of the earth
Spacing.
Further, a controller by one drag two pattern respectively with a first camera system and one second
Camera system connects.
Further, the color of the ceramic ring is selected from the color of three kinds of different colour systems.
The present invention provides a kind of detecting systems and detection method of the voltage class of electric heating tube, are carried out in conjunction with to ceramic ring
Color detection and the result being detected to voltage class specification judge the voltage class of electric heating tube, can detect due to spy
The defective work determined to mix other kinds of electric heating tube in the product sample of type and generated can also detect that voltage class is advised
Defective work caused by lattice cause to mismatch with pixel value due to processing mistake etc., improves detection stability and detection
Efficiency reduces omission factor and false drop rate.
Description of the drawings
Fig. 1 is the structural schematic diagram of the detecting system of the voltage class of electric heating tube provided in an embodiment of the present invention；
Fig. 2 is the sectional view at electric heating tube the two poles of the earth provided in an embodiment of the present invention；
Fig. 3 is the vertical view of electric heating tube tube body provided in an embodiment of the present invention；
Fig. 4 be it is provided in an embodiment of the present invention voltage class be 127V and the two poles of the earth on ceramic ring be black when detecting system
Detection result figure；
Fig. 5 be it is provided in an embodiment of the present invention voltage class be 100V and the two poles of the earth on ceramic ring be respectively pink and white when
The detection result figure of detecting system；
Fig. 6 be it is provided in an embodiment of the present invention voltage class be 220V and the two poles of the earth on ceramic ring be pink when detection system
The detection result figure of system.
In figure, 1：Ceramic ring, 2：Tube body, 3：Voltage class specification.
Specific implementation mode
The specific implementation mode of the present invention is described in more detail below in conjunction with schematic diagram.According to following description and
Claims, advantages and features of the invention will become apparent from.It should be noted that attached drawing is all made of very simplified form and
Using non-accurate ratio, only for the purpose of facilitating and clarifying the purpose of the embodiments of the invention.
As shown in Figures 1 to 3, the present invention provides a kind of detecting systems of the voltage class of electric heating tube, including：
First camera system, including first camera, marginal position positioning unit, speckle locating unit, pixels statistics unit
(not shown) and first light source for irradiating electric heating tube to be detected, the first camera are fixed with the marginal position respectively
Bit location, speckle locating unit are connected with pixels statistics unit；
Second camera system, including second camera, outline unit (not shown, alternatively referred to as side shape matching unit) and
Second light source for irradiating electric heating tube to be detected, the second camera are connect with outline unit；
Controller, respectively with the marginal position positioning unit, speckle locating unit, pixels statistics unit and outline
Unit connects, and reference specification is provided in the controller；
Wherein, controlling the marginal position positioning unit by the controller makes first camera position the two of electric heating tube
The position of pole also controls the position that the speckle locating unit makes first camera position ceramic ring 1 on the two poles of the earth, also controls the pixel
Statistic unit makes the pixel value of first camera detection ceramic ring, and compares whether the pixel value matches with reference specification, passes through institute
Stating controller and also controlling the outline unit makes voltage class specification 3 on second camera detection electric heating tube tube body 2, and
Compare whether the voltage class specification 3 matches with reference specification, if the pixel value and voltage class specification are and reference gauge
Lattice match, then detect certified products, if any in the pixel value and voltage class specification mismatch with reference specification, detect
To defective work.
It is to be understood that for qualified voltage heat pipe, since ceramic ring color and the voltage class of the electric heating tube are advised
Lattice match, therefore have both contained reference pixel specification in the reference specification and also included reference voltage grade specification, and
The two matches.Therefore, can compare the pixel value detected whether matched with reference specification (reference color specification) (whether phase
Together), can also compare the voltage class specification detected whether matched with reference specification (reference voltage grade specification) (whether phase
Together).
With continued reference to FIG. 1, in the present embodiment, first light source and second light source are strip source.For the first phase
Machine and second camera can be judged according to the difference of used camera with monochrome pixels value or color pixel values.
In the present embodiment, it is additionally provided in the controller with reference to spacing threshold, described in controller control
Marginal position positioning unit makes the position at the two poles of the earth of first camera positioning electric heating tube and obtains the spacing between the two poles of the earth, and compares
The spacing whether fall with reference to spacing threshold section within, if within and the pixel value and voltage class specification with ginseng
Specification matching is examined, then certified products are detected, if any and reference gauge not within and in the pixel value and voltage class specification
Lattice mismatch, then detect defective work.
Further, between spacing or outer ledge of the spacing between described the two poles of the earth between the inside edge at the two poles of the earth
Spacing.In the present embodiment, as shown in Fig. 2, the spacing between the inside edge of two-stage is defined as the spacing between two-stage, i.e.,
For L, it is required that accuracy of detection be 0.5mm, by the way that the X-coordinate value of the two poles of the earth inward flange position can be obtained the spacing as difference.
As a non-limiting embodiment, a controller by one drag two pattern respectively with first phase
Machine system is connected with a second camera system.Specifically, so-called one drag two pattern, i.e. a controller can control two non-intelligence
Energy camera, two cameras collocation, two TRIG signals triggerings, first camera collocation TRIG1, second camera collocation TRIG2,
TRIG1, TRIG2 trigger sequence are unlimited.Mainly had using the advantage of one drag two pattern：Hardware cost is saved, is brought to client
Economic benefit；Switch board arrangement is more concise and beautiful, installs own degree higher；System integration higher saves communication resources.
Further, the color of the ceramic ring is selected from the color of three kinds of different colour systems.For example, ceramic ring is by white, pink, black three
Kind of color it is mashed up in vain, black, pinky white, pink, five kinds of specification products of black and white, but not limited to this.In the present embodiment
In, electric heating tube to be detected is had by product voltage class specification printed words point：110V, 220V, 127V, 230V, 100V totally five
Class.
The present invention also provides a kind of detection methods of the voltage class of electric heating tube, including：
Product sample to be detected is established, the product sample includes at least one electric heating tube, the electric heating tube
The two poles of the earth be arranged with ceramic ring respectively, there is voltage class specification, in the controller setting reference on the tube body of the electric heating tube
Specification；
The electric heating tube is placed in the visual field of first camera, the electric heating tube is irradiated by first light source, is led to
It crosses the controller and controls the position that the marginal position positioning unit makes the two poles of the earth of first camera positioning electric heating tube, also control
The speckle locating unit makes first camera position the position of ceramic ring on the two poles of the earth, and also controlling the pixels statistics unit makes the first phase
The pixel value of machine testing ceramic ring, and compare whether the pixel value matches with reference specification；
The electric heating tube is placed in the visual field of second camera, the electric heating tube is irradiated by second light source, is led to
Cross the controller also control the outline unit make second camera detection electric heating tube tube body on voltage class specification,
And compare whether the voltage class specification matches with reference specification, if the pixel value and voltage class specification are and reference gauge
Lattice match, then detect certified products, if any in the pixel value and voltage class specification mismatch with reference specification, detect
To defective work.
In the present embodiment, first light source and second light source are strip source.For first camera and second camera, root
According to the difference of used camera, can be judged with monochrome pixels value or color pixel values.
In the present embodiment, it is additionally provided in the controller with reference to spacing threshold, described in controller control
Marginal position positioning unit makes the position at the two poles of the earth of first camera positioning electric heating tube and obtains the spacing between the two poles of the earth, and compares
The spacing whether fall with reference to spacing threshold section within, if within and the pixel value and voltage class specification with ginseng
Specification matching is examined, then certified products are detected, if any and reference gauge not within and in the pixel value and voltage class specification
Lattice mismatch, then detect defective work.
Further, between spacing or outer ledge of the spacing between described the two poles of the earth between the inside edge at the two poles of the earth
Spacing.In the present embodiment, the spacing between the inside edge of two-stage is defined as the spacing between two-stage, as L, it is required that
Accuracy of detection be 0.5mm, by the way that the X-coordinate value of the two poles of the earth inward flange position can be obtained the spacing as difference.
As a non-limiting embodiment, a controller by one drag two pattern respectively with first phase
Machine system is connected with a second camera system.Specifically, so-called one drag two pattern, i.e. a controller can control two non-intelligence
Energy camera, two cameras collocation, two TRIG signals triggerings, first camera collocation TRIG1, second camera collocation TRIG2,
TRIG1, TRIG2 trigger sequence are unlimited.Mainly had using the advantage of one drag two pattern：Hardware cost is saved, is brought to client
Economic benefit；Switch board arrangement is more concise and beautiful, installs own degree higher；System integration higher saves communication resources.
Further, the color of the ceramic ring is selected from the color of three kinds of different colour systems.For example, ceramic ring is by white, pink, black three
Kind of color it is mashed up in vain, black, pinky white, pink, five kinds of specification products of black and white, but not limited to this.In the present embodiment
In, electric heating tube to be detected is had by product voltage class specification printed words point：110V, 220V, 127V, 230V, 100V totally five
Class.
In addition, by product voltage class printed words come when distinguishing electric heating tube voltage class, present invention employs profiles
Matching unit is detected electric heating tube.This is because needing to consider following several respects factor when detecting：
(1) there are offsets for the position of character print；
(2) interference of character beside key character is eliminated, once positioning error influences detection；
(3) five class characters of 110V 220V 127V 230V 100V only need to detect numerical portion, but due to five classes
There are the identical of individual characters, such as 110 and 100,220 and 230 between different three digit characters；So to ensure that detection is stablized
It distinguishes, needs to be detected three characters using outline unit respectively.
Outline unit is the shape matching based on profile, it refers to weighing shape according to certain measurement criterion
Between similitude.It has a wide range of applications in fields such as computer vision, pattern-recognition, remote Sensing Image Analysis, Text regions.
The present invention distinguishes product category by product voltage class specification, is actually directed to the discrimination of three-figure number,
The function that OCR is identified is not used and uses outline unit, and main advantage is following several respects：
(1) realization of OCR functions is the positioning function based on tool, and current production character print position offset is larger,
Outline unit has framing function and OCR functions do not have positioning function, needs to assist other positioning tools；
(2) it because of factors such as the depth, font size difference, type matrix abrasion, the Print direction position offsets of type matrix printing, causes
Font printing consistency is poor, if needing to establish a large amount of font character library using OCR functions, it is clear that this can bring huge work
Amount.Outline unit has a profile scaling with its sample image 10%, function be using the similarity of shape come
Detection operation can be completed in judging result, therefore, primary setting.
~6 are please referred to Fig.4, the embodiment of the present invention additionally provides under different voltages grade specification and different ceramic ring colors
Detection result figure.In figure, NG represents defective work, and OK represents certified products.
The present invention also uses said detecting system and detection method to carry out detection experiment, please refers to table 1.
Table 1
In conjunction with table 1 it is found that being detected experiment using the detecting system and detection method, omission factor can be substantially reduced
And false drop rate, in this experiment, it is zero to enable to omission factor and false drop rate.
The present invention provides a kind of detecting systems and detection method of the voltage class of electric heating tube, are carried out in conjunction with to ceramic ring
Color detection and the result being detected to voltage class specification judge the voltage class of electric heating tube, can detect due to spy
The defective work determined to mix other kinds of electric heating tube in the product sample of type and generated can also detect that voltage class is advised
Defective work caused by lattice cause to mismatch with pixel value due to processing mistake etc., improves detection stability and detection
Efficiency reduces omission factor and false drop rate.
The preferred embodiment of the present invention is above are only, does not play the role of any restrictions to the present invention.Belonging to any
Those skilled in the art, in the range of not departing from technical scheme of the present invention, to the invention discloses technical solution and
Technology contents make the variations such as any type of equivalent replacement or modification, belong to the content without departing from technical scheme of the present invention, still
Within belonging to the scope of protection of the present invention.
Claims (10)
1. a kind of detection method of the voltage class of electric heating tube, which is characterized in that including：
Establish product sample to be detected, the product sample includes at least one electric heating tube, and the two of the electric heating tube
Pole is arranged with ceramic ring respectively, has voltage class specification on the tube body of the electric heating tube, sets reference specification in the controller；
The electric heating tube is placed in the visual field of first camera, the electric heating tube is irradiated by first light source, passes through institute
It states controller and controls the position that a marginal position positioning unit makes the two poles of the earth of first camera positioning electric heating tube, also control a spot
Positioning unit makes first camera position the position of ceramic ring on the two poles of the earth, and also controlling a pixels statistics unit makes first camera detect ceramic ring
Pixel value, and compare whether the pixel value matches with reference specification；
The electric heating tube is placed in the visual field of second camera, the electric heating tube is irradiated by second light source, passes through institute
Stating controller also controlling profile matching unit makes second camera detect the voltage class specification on electric heating tube tube body, and compares institute
State whether voltage class specification matches with reference specification, if the pixel value and voltage class specification are matched with reference specification,
It then detects certified products, if any in the pixel value and voltage class specification mismatch with reference specification, detects and do not conform to
Lattice product.
2. the detection method of the voltage class of electric heating tube as described in claim 1, which is characterized in that in the controller also
It is provided with and refers to spacing threshold, controlling the marginal position positioning unit by the controller makes first camera position electrical heating
The position at the two poles of the earth of pipe simultaneously obtains the spacing between the two poles of the earth, and compare the spacing whether fall with reference to spacing threshold section it
It is interior, if within and the pixel value and voltage class specification are matched with reference specification, certified products are detected, if not at it
It is any in the interior and described pixel value and voltage class specification to be mismatched with reference specification, then detect defective work.
3. the detection method of the voltage class of electric heating tube as claimed in claim 2, which is characterized in that between described the two poles of the earth
Spacing is the spacing between spacing or outer ledge between the inside edge at the two poles of the earth.
4. the detection method of the voltage class of electric heating tube as described in claim 1, which is characterized in that a controller
It is connect respectively with a first camera system and a second camera system by one drag two pattern.
5. the detection method of the voltage class of electric heating tube as described in claim 1, which is characterized in that the color of the ceramic ring
Color selected from three kinds of different colour systems.
6. a kind of detecting system of the voltage class of electric heating tube, which is characterized in that including：
First camera system, including first camera, marginal position positioning unit, speckle locating unit, pixels statistics unit and use
In irradiate electric heating tube to be detected first light source, the first camera respectively with the marginal position positioning unit, spot
Positioning unit is connected with pixels statistics unit；
Second camera system, including second camera, outline unit and the second light for irradiating electric heating tube to be detected
Source, the second camera are connect with outline unit；
Controller, respectively with the marginal position positioning unit, speckle locating unit, pixels statistics unit and outline unit
It connects, reference specification is provided in the controller；
Wherein, the two poles of the earth that the marginal position positioning unit makes first camera position electric heating tube are controlled by the controller
Position also controls the position that the speckle locating unit makes first camera position ceramic ring on the two poles of the earth, also controls the pixels statistics
Unit makes the pixel value of first camera detection ceramic ring, and compares whether the pixel value matches with reference specification, passes through the control
Device processed, which also controls the outline unit, makes second camera detect the voltage class specification on electric heating tube tube body, and compares institute
State whether voltage class specification matches with reference specification, if the pixel value and voltage class specification are matched with reference specification,
It then detects certified products, if any in the pixel value and voltage class specification mismatch with reference specification, detects and do not conform to
Lattice product.
7. the detecting system of the voltage class of electric heating tube as claimed in claim 6, which is characterized in that in the controller also
It is provided with and refers to spacing threshold, controlling the marginal position positioning unit by the controller makes first camera position electrical heating
The position at the two poles of the earth of pipe simultaneously obtains the spacing between the two poles of the earth, and compare the spacing whether fall with reference to spacing threshold section it
It is interior, if within and the pixel value and voltage class specification are matched with reference specification, certified products are detected, if not at it
It is any in the interior and described pixel value and voltage class specification to be mismatched with reference specification, then detect defective work.
8. the detecting system of the voltage class of electric heating tube as claimed in claim 7, which is characterized in that between described the two poles of the earth
Spacing is the spacing between spacing or outer ledge between the inside edge at the two poles of the earth.
9. the detecting system of the voltage class of electric heating tube as claimed in claim 6, which is characterized in that a controller
It is connect respectively with a first camera system and a second camera system by one drag two pattern.
10. the detecting system of the voltage class of electric heating tube as claimed in claim 6, which is characterized in that the face of the ceramic ring
Color of the color sorting from three kinds of different colour systems.
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