Shoe Sole Size Measurement System and Method

Abstract

A sole size detection system includes a conveying device, a scanning device, and a computing device. The sole size detection method includes: conveying the sole to a working area by the conveying device; in the working area, the scanning device acquires sole surface contour information; transmitting the sole surface contour information to the computing device, which obtains curve data on at least one reference straight line based on the sole surface contour information; calculating a detection length based on the curve data; and comparing the detection length with a standard length range, thereby accurately detecting the size of soles with curved shapes.

Claims

1. A sole size detection system for detecting the size of a sole, wherein a portion of an upper surface of the sole near its periphery has at least one set of size markings, and the at least one set of size markings includes two marking points; the sole size detection system comprises: a conveying device for placing the sole and conveying the sole to a working area; a scanning device disposed in the working area, the scanning direction of the scanning device facing the conveying device, the scanning device scanning the sole on the conveying device to obtain sole surface contour information; a computing device electrically connected to the scanning device, the computing device obtaining curve data on at least one reference straight line based on the sole surface contour information, wherein the at least one reference straight line is formed by connecting the two marking points of the at least one set of size markings, and the computing device calculating a detection length based on the curve data; the computing device storing at least one standard length range, and generating a prompt signal when the detection length does not conform to the standard length range.

2. The sole size detection system as described in claim 1, wherein the computing device first smooths the curve data to form a smoothed curve data; the computing device calculates the detection length based on the smoothed curve data.

3. The sole size detection system as described in claim 2, wherein the smoothed curve data includes a plurality of data points, the computing device obtains a horizontal position value and a depth position value based on each data point, the computing device calculates an adjacent distance between two adjacent data points based on the horizontal position value and the depth position value of two adjacent data points, and sums up the adjacent distances of the data points to obtain the detection length.

4. The sole size detection system as described in claim 3, wherein each data point has a horizontal original value and a depth original value, the computing device first converts the horizontal original value and the depth original value to obtain a horizontal actual value and a depth actual value, adds a horizontal offset value to the horizontal actual value to obtain the horizontal position value; and adds a depth offset value to the depth actual value to obtain the depth position value.

5. The sole size detection system as described in claim 3, wherein, The computing device calculates the Euclidean distance between two adjacent data points to obtain the adjacent distance.

6. The sole size detection system as described in claim 1, comprising a recycling device electrically connected to the computing device, the recycling device moving soles that do not conform to the standard length range from the conveying device to a recycling area based on the prompt signal.

7. The sole size detection system as described in claim 1, wherein the scanning device is a three-dimensional photography device, and the acquired sole surface contour information is an image and has the three-dimensional shape of the sole.

8. The sole size detection system as described in claim 1, wherein the scanning device is a laser scanning device, and the acquired sole surface contour information has a plurality of point cloud data of the three-dimensional shape of the sole.

9. A method for detecting the size of a shoe sole, wherein a portion of the upper surface of the shoe sole near its periphery has at least one set of size markings, and the at least one set of size markings includes two marking points; the method for detecting the size of a shoe sole includes the following steps: A. The shoe sole is conveyed to a work area by a conveying device; B. In the work area, a scanning device acquires surface contour information of the shoe sole; C. The surface contour information of the shoe sole is transmitted to a computing device, which obtains curve data on at least one reference straight line based on the surface contour information of the shoe sole; D. The computing device calculates a detection length based on the curve data; E. The computing device compares a standard length range with the detection length.

10. The sole size detection method as described in claim 9, wherein the scanning device in step B is a three-dimensional photography device, and the acquired sole surface contour information is an image and has the three-dimensional shape of the sole.

11. The sole size detection method as described in claim 9, wherein the scanning device in step B is a laser scanning device, and the acquired sole surface contour information has a plurality of point cloud data of the three-dimensional shape of the sole.

12. The sole size detection method as described in claim 9, wherein in step C, the at least one reference line is formed by connecting the two mark points of the at least one size mark group.

13. The sole size detection method as described in claim 9, wherein before step D, the method further comprises: the computing device first smoothing the curve data to form a smoothed curve data; the computing device calculating the detection length based on the smoothed curve data.

14. The sole size detection method as described in claim 13, wherein the smoothed curve data includes a plurality of data points, the computing device obtains a horizontal position value and a depth position value based on each of the data points, the processing module calculates an adjacent distance between two adjacent data points based on the horizontal position value and the depth position value of two adjacent data points, and sums up the adjacent distances of the data points to obtain the detection length.

15. The sole size detection method as described in claim 14, wherein each data point has a horizontal original value and a depth original value, the computing device first converts the horizontal original value and the depth original value to obtain a horizontal actual value and a depth actual value, adds a horizontal offset value to the horizontal actual value to obtain the horizontal position value, and adds a depth offset value to the depth actual value to obtain the depth position value.

16. The method for detecting sole size as described in claim 14, wherein, The computing device calculates the Euclidean distance between two adjacent data points to obtain the adjacent distance.

17. The sole size detection method as described in claim 14, wherein after step E, when the detected length does not conform to the standard length range, a prompt signal is generated, a recycling device is electrically connected to the computing device, and the recycling device moves the sole that does not conform to the standard length range from the conveying device to a recycling area according to the prompt signal.

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