CN103789922A - Method and device for detecting crochet hook part, and knitting machine - Google Patents
Method and device for detecting crochet hook part, and knitting machine Download PDFInfo
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- CN103789922A CN103789922A CN201410064199.4A CN201410064199A CN103789922A CN 103789922 A CN103789922 A CN 103789922A CN 201410064199 A CN201410064199 A CN 201410064199A CN 103789922 A CN103789922 A CN 103789922A
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Abstract
The invention relates to the field of knitting machines, in particular to a method and device for detecting a crochet hook part, and a knitting machine. The method comprises the steps of obtaining real-time images of the crochet hook part; extracting form information of the crochet hook part from the real-time images of the crochet hook part; comparing the form information of the crochet hook part with form information of a complete crochet hook part to obtain the similarity of the form information, wherein the form information of the complete crochet hook part is extracted from images of the complete crochet hook part, is obtained in advance, and is stored; determining whether the crochet hook part is complete or not according to the similarity of the form information. According to the method and device for detecting the crochet hook part, and the knitting machine, the phenomenon that the crochet hook part which is partly broken continues working, so that defective products or waste products are produced by a knitting machine cannot happen, and working efficiency of the knitting machine is high.
Description
Technical field
The present invention relates to knitting machine field, in particular to the detection method of crochet hook part, checkout gear and the knitting machine of crochet hook part.
Background technology
Knitting machine contains multiple weaving crochet hook parts, and when knitting machine is in the time working long hours, crochet hook part easily ruptures, if find not in time and solve, can produce nonconforming substandard products.
In correlation technique, the detection method of crochet hook part is by add a fiber device in the front of crochet hook part, whether detect crochet hook part by light reflection principle ruptures, the sensor of traditional fiber device is had good positioning, when weaving crochet hook part rotates in light area, if crochet hook part does not rupture, have light and reflect back, reflect back if unglazed, show the fracture of crochet hook part.
But the crochet hook part of knitting machine is in real work, crochet hook part is likely part fracture, so still, have light transmitting and go back, so can produce erroneous judgement, the post-rift crochet hook part of part is worked on, cause knitting machine to produce defect ware or waste product, the operating efficiency of knitting machine is lower.
Summary of the invention
The object of the present invention is to provide the detection method of crochet hook part, checkout gear and the knitting machine of crochet hook part, to solve the above problems.
The detection method that crochet hook part is provided in an embodiment of the present invention, comprising: the real-time imaging that obtains described crochet hook part;
From the real-time imaging of described crochet hook part, extract the shape information of described crochet hook part;
The shape information of the complete crochet hook part extracting by the shape information of described crochet hook part and in the image of the complete crochet hook part that obtains and preserve in advance compares, and obtains the similarity of shape information;
Determine that according to the similarity of described shape information whether described crochet hook part is complete.
Preferably; in the detection method of above-mentioned crochet hook part; after determining that according to the similarity of described shape information whether described crochet hook part is complete, also comprise: if the similarity of described shape information is less than default similarity threshold, sends and shut down and/or alarm command.
Preferably, in the detection method of above-mentioned crochet hook part, described crochet hook part comprises: needle tip, top and shank;
The described shape information that extracts described crochet hook part from the real-time imaging of described crochet hook part, comprising:
From the real-time imaging of described crochet hook part, extract the real time length information at the real time length information of described needle tip, described top and the real time length information of described shank.
Preferably, in the detection method of above-mentioned crochet hook part, the shape information of the described complete crochet hook part extracting by the shape information of described crochet hook part and in the image of the complete crochet hook part that obtains and preserve in advance compares, and obtains the similarity of shape information, comprising:
The length information of the needle tip of the real time length information of described needle tip and described complete crochet hook part is compared, obtain the similarity of the length of needle tip;
The length information at the top of the length information at the top of described crochet hook part and described complete crochet hook part is compared, obtain the similarity of the length at top;
The length information of the shank of the length information of the shank of described crochet hook part and described complete crochet hook part is compared, obtain the similarity of the length of shank.
Preferably, in the detection method of above-mentioned crochet hook part, the described similarity according to described shape information determines that whether described crochet hook part is complete, comprising:
If the similarity of the length of described needle tip is greater than default threshold value, determine that described crochet hook part is complete;
If the similarity of the length of described needle tip is less than the similarity of the length at described default threshold value and described top and is greater than described default threshold value, determine the needle tip fracture of described crochet hook part;
If the similarity of the length of described needle tip is less than the similarity of the length at described default threshold value, described top and is less than described default threshold value, and the similarity of the length of described shank is greater than described default threshold value, determine the top fracture of described crochet hook part;
If the similarity of the length of described needle tip is less than the similarity that the similarity of the length at described default threshold value, described top is less than the length of described default threshold value, described shank and is less than described default threshold value, determine the shank fracture of described crochet hook part.
The checkout gear that crochet hook part is also provided in an embodiment of the present invention, comprising: camera, image processor;
Described camera obtains the real-time imaging of described crochet hook part and sends it to described image processor;
Described image processor extracts the shape information of described crochet hook part from the real-time imaging of described crochet hook part, the shape information of the complete crochet hook part extracting by the shape information of described crochet hook part and in the image of the complete crochet hook part that obtains and preserve in advance compares, obtain the similarity of shape information, and determine that according to the similarity of shape information whether described crochet hook part is complete.
Preferably; in the checkout gear of above-mentioned crochet hook part; also comprise: controller; described controller obtains the similarity of the shape information of described crochet hook part from described image processor; if the similarity of described shape information is less than default similarity threshold, sends and shut down and/or alarm command to the control system of the knitting machine at described crochet hook part place.
Preferably, in the checkout gear of above-mentioned crochet hook part, described image processor comprises: shape information extraction unit and shape information comparing unit;
The shape information that described shape information extraction unit extracts described crochet hook part from the real-time imaging of described crochet hook part sends to described shape information comparing unit;
Described shape information comparing unit receives the shape information of described crochet hook part, and the shape information of the complete crochet hook part extracting in the image of the shape information of described crochet hook part and the complete crochet hook part that obtains and preserve is in advance compared, determine that according to the similarity of described shape information whether described crochet hook part is complete.
Preferably, in the checkout gear of above-mentioned crochet hook part, described shape information extraction unit comprises: length extraction unit;
Described shape information comparing unit comprises: length comparing unit;
Length information, the length information of needle tip and the length information of shank that described length extraction unit extracts the top of described crochet hook part from the real-time imaging of described crochet hook part send to described length comparing unit;
Described length comparing unit receives length information, the length information of needle tip and the length information of shank at the top of described crochet hook part, and length information, the length information of needle tip and the length information of shank at the top of the complete crochet hook part extracting in the image of the length information of the length information of the length information at the top of described crochet hook part, needle tip and shank and the complete crochet hook part that obtains and preserve are in advance compared, determine that according to result relatively whether described crochet hook part is complete.
Knitting machine is also provided in an embodiment of the present invention, has comprised the control system for controlling the operation of crochet hook part, also comprised the checkout gear of the crochet hook part as described in above-described embodiment.
The detection method of the crochet hook part that the embodiment of the present invention provides, checkout gear and the knitting machine of crochet hook part, it is by obtaining the real-time imaging of crochet hook part, and from the real-time imaging of crochet hook part, extract the shape information of crochet hook part, compare from the shape information of crochet hook part and the shape information that obtains and preserve in advance the complete crochet hook part extracting the image of complete crochet hook part, obtain the similarity of shape information; Determine that according to the similarity of shape information whether crochet hook part is complete.In the time that crochet hook part part ruptures, the shape information of the crochet hook part extracting from the real-time imaging of crochet hook part is different from the shape information of complete crochet hook part, therefore can not produce erroneous judgement, can not make the post-rift crochet hook part of part work on, cause knitting machine to produce defect ware or waste product, the operating efficiency of knitting machine is higher.
Accompanying drawing explanation
Fig. 1 shows the schematic diagram of a kind of embodiment of the detection method of crochet hook part of the present invention;
The structural representation of a kind of embodiment of Fig. 2 crochet hook part of the present invention.
The specific embodiment
Also by reference to the accompanying drawings the present invention is described in further detail below by specific embodiment.
The detection method that crochet hook part is provided in an embodiment of the present invention, as shown in Figure 1, comprising:
S101: the real-time imaging that obtains crochet hook part;
S102: the shape information that extracts crochet hook part from the real-time imaging of crochet hook part;
S103: the shape information of the complete crochet hook part extracting by the shape information of crochet hook part and in the image of the complete crochet hook part that obtains and preserve in advance compares, and obtains the similarity of shape information;
S104: determine that according to the similarity of shape information whether crochet hook part is complete.
Wherein, the real-time imaging that obtains crochet hook part can or obtain the automatic or manual screenshotss of video by the mode of taking pictures, in order to ensure the daylighting of real-time imaging, backlight or parallel backlight light filling that a side setting that can deviate from mutually with camera or video recorder at crochet hook part can scattering; The shape information of the crochet hook part that extracts from the real-time imaging of crochet hook part can be length information, width information, shape information of crochet hook part etc.
The detection method of the crochet hook part that the embodiment of the present invention provides, by obtaining the real-time imaging of crochet hook part, and from the real-time imaging of crochet hook part, extract the shape information of crochet hook part, compare from the shape information of crochet hook part and the shape information that obtains and preserve in advance the complete crochet hook part extracting the image of complete crochet hook part, obtain the similarity of shape information; Determine that according to the similarity of shape information whether crochet hook part is complete.In the time that crochet hook part part ruptures, the shape information of the crochet hook part extracting from the real-time imaging of crochet hook part is different from the shape information of complete crochet hook part, therefore can not produce erroneous judgement, can not make the post-rift crochet hook part of part work on, cause knitting machine to produce defect ware or waste product, the operating efficiency of knitting machine is higher.
Preferably, in the detection method of above-mentioned crochet hook part, after determining that according to the similarity of shape information whether crochet hook part is complete, also comprise: if the similarity of shape information is less than default similarity threshold, sends and shut down and/or alarm command.
By after whether definite crochet hook part is complete; be less than default similarity threshold if increase the similarity of shape information; send the action of shutdown and/or alarm command; when can rapid pin imperfect to crochet hook part; the similarity of shape information is less than the situation of default similarity threshold and makes the reply of shutting down or reporting to the police, and reduces the probability of producing defect ware or waste product at the knitting machine at the imperfect rear crochet hook part of crochet hook part place.
Preferably, in the detection method of above-mentioned crochet hook part, as shown in Figure 2, crochet hook part comprises: needle tip 201, top 202 and shank 203; The shape information that extracts crochet hook part from the real-time imaging of crochet hook part, comprising: real time length information, the real time length information at top and the real time length information of shank of from the real-time imaging of crochet hook part, extracting needle tip.
Comprise real time length information, the real time length information at top and the real time length information of shank of needle tip by the shape information of the further crochet hook part clearly extracting from the real-time imaging of crochet hook part, be convenient to carry out the comparison of the shape information of crochet hook part and the shape information of complete crochet hook part.
Preferably, in the detection method of above-mentioned crochet hook part, the shape information of the complete crochet hook part extracting by the shape information of crochet hook part and in the image of the complete crochet hook part that obtains and preserve in advance compares, obtain the similarity of shape information, comprise: the length information of the needle tip of the real time length information of needle tip and complete crochet hook part is compared, obtain the similarity of the length of needle tip; The length information at the top of the length information at the top of crochet hook part and complete crochet hook part is compared, obtain the similarity of the length at top; The length information of the shank of the length information of the shank of crochet hook part and complete crochet hook part is compared, obtain the similarity of the length of shank.
By further clearly obtaining the method for the similarity of shape information, be convenient to determine fast the similarity of shape information, and then determine that according to the similarity of shape information whether crochet hook part is complete fast.
Preferably, in the detection method of above-mentioned crochet hook part, determine that according to the similarity of shape information whether crochet hook part is complete, comprising: if the similarity of the length of needle tip is greater than default threshold value, determine that crochet hook part is complete; If the similarity of the length of needle tip is less than the similarity of the length at default threshold value and top and is greater than default threshold value, determine the needle tip fracture of crochet hook part; If the similarity of the length of needle tip is less than the similarity of the length at default threshold value, top and is less than default threshold value, and the similarity of the length of shank is greater than default threshold value, the top of definite crochet hook part fracture; If the similarity of the length of needle tip is less than the similarity that the similarity of the length at default threshold value, top is less than the length of default threshold value, shank and is less than default threshold value, determine the shank fracture of crochet hook part.
By further clearly determining according to the similarity of shape information the method whether crochet hook part is complete, be convenient to determine that according to the similarity of shape information whether crochet hook part is complete fast.
The checkout gear that crochet hook part is also provided in an embodiment of the present invention, comprising: camera, image processor; Camera obtains the real-time imaging of crochet hook part and sends it to image processor; Image processor extracts the shape information of crochet hook part from the real-time imaging of crochet hook part, the shape information of the complete crochet hook part extracting by the shape information of crochet hook part and in the image of the complete crochet hook part that obtains and preserve in advance compares, obtain the similarity of shape information, and determine that according to the similarity of shape information whether crochet hook part is complete.
The checkout gear of the crochet hook part that the embodiment of the present invention provides, obtain the real-time imaging of crochet hook part by camera, and from the real-time imaging of crochet hook part, extract the shape information of crochet hook part by image processor, compare from the shape information of crochet hook part and the shape information that obtains and preserve in advance the complete crochet hook part extracting the image of complete crochet hook part, obtain the similarity of shape information; Determine that according to the similarity of shape information whether crochet hook part is complete.In the time that crochet hook part part ruptures, shape information by the crochet hook part that extracts from the real-time imaging of crochet hook part is different from the shape information of complete crochet hook part, therefore can not produce erroneous judgement, can not make the post-rift crochet hook part of part work on, cause knitting machine to produce defect ware or waste product, the operating efficiency of knitting machine is higher.
Preferably; in the checkout gear of above-mentioned crochet hook part; also comprise: controller; controller obtains the similarity of the shape information of crochet hook part from image processor; if the similarity of shape information is less than default similarity threshold, sends and shut down and/or alarm command to the control system of the knitting machine at crochet hook part place.
By controller is set; be less than default similarity threshold according to shape information similarity; send and shut down and/or alarm command to the control system of the knitting machine at crochet hook part place; when can rapid pin imperfect to crochet hook part; the similarity of shape information is less than the situation of default similarity threshold and makes the reply of shutting down or reporting to the police, and reduces the probability of producing defect ware or waste product at the knitting machine at the imperfect rear crochet hook part of crochet hook part place.
Preferably, in the checkout gear of above-mentioned crochet hook part, image processor comprises: shape information extraction unit and shape information comparing unit; The shape information that shape information extraction unit extracts crochet hook part from the real-time imaging of crochet hook part sends to shape information comparing unit; Shape information comparing unit receives the shape information of crochet hook part, and the shape information of the complete crochet hook part extracting in the image of the shape information of crochet hook part and the complete crochet hook part that obtains and preserve is in advance compared, determine that according to the similarity of shape information whether crochet hook part is complete.
The shape information that extracts crochet hook part by shape information extraction unit is set from the real-time imaging of crochet hook part sends to shape information comparing unit; The shape information that shape information comparing unit receives crochet hook part is set, and the shape information of the complete crochet hook part extracting by the shape information of crochet hook part and in the image of the complete crochet hook part that obtains and preserve in advance compares, determine that according to the similarity of shape information whether crochet hook part is complete, can not produce erroneous judgement, can not make the post-rift crochet hook part of part work on, cause knitting machine to produce defect ware or waste product, make the operating efficiency of knitting machine higher.
Preferably, in the checkout gear of above-mentioned crochet hook part, shape information extraction unit comprises: length extraction unit; Shape information comparing unit comprises: length comparing unit; Length information, the length information of needle tip and the length information of shank that length extraction unit extracts the top of crochet hook part from the real-time imaging of crochet hook part send to length comparing unit; Length comparing unit receives length information, the length information of needle tip and the length information of shank at the top of crochet hook part, and length information, the length information of needle tip and the length information of shank at the top of the complete crochet hook part extracting in the image of the length information of the length information of the length information at the top of crochet hook part, needle tip and shank and the complete crochet hook part that obtains and preserve are in advance compared, determine that according to result relatively whether crochet hook part is complete.
Comprise length extraction unit by further clear and definite shape information extraction unit, shape information comparing unit comprises length comparing unit, thereby completing length information by length extraction unit and length comparing unit compares, determine that according to comparative result whether crochet hook part is complete, whether definite crochet hook part that can be is rapidly and efficiently complete.
Knitting machine is also provided in an embodiment of the present invention, has comprised the control system for controlling the operation of crochet hook part, also comprised, as the checkout gear of the crochet hook part of above-described embodiment.
The knitting machine that the embodiment of the present invention provides, by comprising the control system for controlling the operation of crochet hook part and comprising as the checkout gear of the crochet hook part of above-described embodiment, obtain the real-time imaging of crochet hook part by the camera in the checkout gear of crochet hook part, and from the real-time imaging of crochet hook part, extract the shape information of crochet hook part by the image processor in the checkout gear of crochet hook part, compare from the shape information of crochet hook part and the shape information that obtains and preserve in advance the complete crochet hook part extracting the image of complete crochet hook part, obtain the similarity of shape information; Determine that according to the similarity of shape information whether crochet hook part is complete.In the time that crochet hook part part ruptures, shape information by the crochet hook part that extracts from the real-time imaging of crochet hook part is different from the shape information of complete crochet hook part, therefore can not produce erroneous judgement, can not make the post-rift crochet hook part of part work on, cause knitting machine to produce defect ware or waste product, the operating efficiency of knitting machine is higher.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. the detection method of crochet hook part, is characterized in that, comprising: the real-time imaging that obtains described crochet hook part;
From the real-time imaging of described crochet hook part, extract the shape information of described crochet hook part;
The shape information of the complete crochet hook part extracting by the shape information of described crochet hook part and in the image of the complete crochet hook part that obtains and preserve in advance compares, and obtains the similarity of shape information;
Determine that according to the similarity of described shape information whether described crochet hook part is complete.
2. the detection method of crochet hook part according to claim 1; it is characterized in that; after determining that according to the similarity of described shape information whether described crochet hook part is complete, also comprise: if the similarity of described shape information is less than default similarity threshold, sends and shut down and/or alarm command.
3. the detection method of crochet hook part according to claim 2, is characterized in that, described crochet hook part comprises: needle tip, top and shank;
The described shape information that extracts described crochet hook part from the real-time imaging of described crochet hook part, comprising:
From the real-time imaging of described crochet hook part, extract the real time length information at the real time length information of described needle tip, described top and the real time length information of described shank.
4. the detection method of crochet hook part according to claim 3, is characterized in that,
The shape information of the described complete crochet hook part extracting by the shape information of described crochet hook part and in the image of the complete crochet hook part that obtains and preserve in advance compares, and obtains the similarity of shape information, comprising:
The length information of the needle tip of the real time length information of described needle tip and described complete crochet hook part is compared, obtain the similarity of the length of needle tip;
The length information at the top of the length information at the top of described crochet hook part and described complete crochet hook part is compared, obtain the similarity of the length at top;
The length information of the shank of the length information of the shank of described crochet hook part and described complete crochet hook part is compared, obtain the similarity of the length of shank.
5. the detection method of crochet hook part according to claim 4, is characterized in that, the described similarity according to described shape information determines that whether described crochet hook part is complete, comprising:
If the similarity of the length of described needle tip is greater than default threshold value, determine that described crochet hook part is complete;
If the similarity of the length of described needle tip is less than the similarity of the length at described default threshold value and described top and is greater than described default threshold value, determine the needle tip fracture of described crochet hook part;
If the similarity of the length of described needle tip is less than the similarity of the length at described default threshold value, described top and is less than described default threshold value, and the similarity of the length of described shank is greater than described default threshold value, determine the top fracture of described crochet hook part;
If the similarity of the length of described needle tip is less than the similarity that the similarity of the length at described default threshold value, described top is less than the length of described default threshold value, described shank and is less than described default threshold value, determine the shank fracture of described crochet hook part.
6. the checkout gear of crochet hook part, is characterized in that, comprising: camera, image processor;
Described camera obtains the real-time imaging of described crochet hook part and sends it to described image processor;
Described image processor extracts the shape information of described crochet hook part from the real-time imaging of described crochet hook part, the shape information of the complete crochet hook part extracting by the shape information of described crochet hook part and in the image of the complete crochet hook part that obtains and preserve in advance compares, obtain the similarity of shape information, and determine that according to the similarity of shape information whether described crochet hook part is complete.
7. the checkout gear of crochet hook part according to claim 6; it is characterized in that; also comprise: controller; described controller obtains the similarity of the shape information of described crochet hook part from described image processor; if the similarity of described shape information is less than default similarity threshold, sends and shut down and/or alarm command to the control system of the knitting machine at described crochet hook part place.
8. the checkout gear of crochet hook part according to claim 7, is characterized in that, described image processor comprises: shape information extraction unit and shape information comparing unit;
The shape information that described shape information extraction unit extracts described crochet hook part from the real-time imaging of described crochet hook part sends to described shape information comparing unit;
Described shape information comparing unit receives the shape information of described crochet hook part, and the shape information of the complete crochet hook part extracting in the image of the shape information of described crochet hook part and the complete crochet hook part that obtains and preserve is in advance compared, determine that according to the similarity of described shape information whether described crochet hook part is complete.
9. the checkout gear of crochet hook part according to claim 8, is characterized in that, described shape information extraction unit comprises: length extraction unit;
Described shape information comparing unit comprises: length comparing unit;
Length information, the length information of needle tip and the length information of shank that described length extraction unit extracts the top of described crochet hook part from the real-time imaging of described crochet hook part send to described length comparing unit;
Described length comparing unit receives length information, the length information of needle tip and the length information of shank at the top of described crochet hook part, and length information, the length information of needle tip and the length information of shank at the top of the complete crochet hook part extracting in the image of the length information of the length information of the length information at the top of described crochet hook part, needle tip and shank and the complete crochet hook part that obtains and preserve are in advance compared, determine that according to result relatively whether described crochet hook part is complete.
10. knitting machine, is characterized in that, comprises the control system for controlling the operation of crochet hook part, also comprises the checkout gear of the crochet hook part as described in claim 6-9 any one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410064199.4A CN103789922B (en) | 2014-02-25 | 2014-02-25 | The detection method of crochet hook part, checkout gear and the knitting machine of crochet hook part |
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| CN201410064199.4A CN103789922B (en) | 2014-02-25 | 2014-02-25 | The detection method of crochet hook part, checkout gear and the knitting machine of crochet hook part |
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| CN109881356A (en) * | 2018-12-25 | 2019-06-14 | 西安工程大学 | Hosiery machine knitting needle on-line measuring device and method based on SVM image classification |
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| Publication number | Publication date |
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| CN103789922B (en) | 2016-05-25 |
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