CN107928677B - Sole shape acquisition device and sole shape acquisition method - Google Patents
Sole shape acquisition device and sole shape acquisition method Download PDFInfo
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- CN107928677B CN107928677B CN201711421961.XA CN201711421961A CN107928677B CN 107928677 B CN107928677 B CN 107928677B CN 201711421961 A CN201711421961 A CN 201711421961A CN 107928677 B CN107928677 B CN 107928677B
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- sole shape
- acquisition
- shape acquisition
- sole
- pressure sensor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
- A61B5/1074—Foot measuring devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/1036—Measuring load distribution, e.g. podologic studies
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
- A61B5/1077—Measuring of profiles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6887—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient mounted on external non-worn devices, e.g. non-medical devices
Abstract
The invention relates to a sole shape acquisition device and a sole shape acquisition method, wherein the sole shape acquisition device comprises a device frame, a plurality of sole shape acquisition columns with axes extending along the up-down direction are distributed on the device frame, and the sole shape acquisition device further comprises a pressure detection device for acquiring pressure values on each sole shape acquisition column. When the device is used, the feet of a user are placed on the corresponding sole shape acquisition columns, the pressure detection device detects the pressure value of the corresponding sole shape acquisition columns, then the height value of the corresponding sole position can be converted according to a formula, and the plurality of sole shape acquisition columns are equivalent to the coordinate division of the sole shape of the user, so that the acquisition of the sole shape information of the user is realized.
Description
Technical Field
The invention relates to a sole shape acquisition device and a sole shape acquisition method in the field of human body information acquisition.
Background
Human body information acquisition is an emerging technical field, wherein, human body overall dimension information is widely applied to fields such as clothing, shoes and caps, medical treatment, sports, house, and the like, and products customized according to personal body dimensions can greatly improve applicability and comfort of the products, and bring better use experience to customers. Whether the shoes fit the feet is extremely important for the health of the joints of the feet, so the acquisition of foot information is particularly important from the medical aspect and the daily life aspect.
Chinese patent CN105105416B discloses a foot shape data collector and a foot shape measuring method, and the foot shape data collector in the disclosure includes a foot pedal, a light shielding plate under the foot pedal, and a bottom camera under the light shielding plate. When the feet of the user are positioned at the pedal position, the bottom camera positioned below the light shielding plate is used for collecting image information of the light shielding plate, and the sole outline information of the user is extracted according to the brightness distribution of the holes on the light shielding plate. The existing foot-shaped data collector has the following problems: the device can only collect the outline shape of the sole of the user, cannot effectively collect the height shape of the bottom surface of the foot of the user, and cannot provide the optimal treatment or user experience for the user.
Disclosure of Invention
The invention aims to provide a sole shape acquisition method capable of acquiring the height shape of the bottom surface of a user's foot; the invention also aims to provide a sole shape acquisition device used in the sole shape acquisition method.
In order to solve the technical problems, the technical scheme of the sole shape acquisition method in the invention is as follows:
the method for collecting the sole shape comprises the following steps that firstly, the feet of a user are placed on corresponding sole shape collecting columns of a sole shape collecting device; and secondly, calculating the sole surface height H at the corresponding position of the sole according to the pressure value F of the corresponding sole shape acquisition column detected by the pressure detection device, wherein H=λF+d, and λ is more than or equal to 0.03 and less than or equal to 0.035,0.5 and d is more than or equal to 0.6.
λ=0.033，d=0.54。
The technical scheme of the sole shape acquisition device in the invention is as follows:
the sole shape acquisition device comprises a device frame, a plurality of sole shape acquisition columns with axes extending along the up-down direction are distributed on the device frame, and the sole shape acquisition device further comprises a pressure detection device for acquiring pressure values on the sole shape acquisition columns.
The sole shape acquisition device further comprises a signal acquisition device for acquiring pressure signals of the pressure detection device.
The pressure detection device is a film pressure sensor arranged at the bottom of each sole shape acquisition column, and the film pressure sensor is provided with a plurality of force measuring points which are respectively contacted with the bottom of each sole shape acquisition column.
The device frame includes upper plate, middle layer board and the lower plywood of upper and lower interval arrangement, each sole shape acquisition post all set up in on the upper plate, film pressure sensor set up in on the upper plate face of middle layer board, signal acquisition ware is for setting up the signal acquisition printed board between middle layer board, is provided with signal acquisition circuit on the signal acquisition printed board, film pressure sensor passes through the flexible band and links to each other with signal acquisition printed board, has the connecting circuit that realizes film pressure sensor and signal acquisition printed board sampling connection in the flexible band.
The film pressure sensor and the signal acquisition printed board are arranged in parallel at intervals in the up-down direction, and the flexible belt is of a U-shaped structure.
The lower layer plate is provided with a cushion block for heightening the signal acquisition printed board, and the signal acquisition printed board is connected to the cushion block through a screw.
The signal acquisition printed board is provided with a USB interface for signal output.
The pressure detection device is a film pressure sensor arranged at the bottom of each sole shape acquisition column, and the film pressure sensor is provided with a plurality of force measuring points which are respectively contacted with the bottom of each sole shape acquisition column; or the pressure detection device is a resistance pressure sensor or a capacitance pressure sensor arranged at the bottom of each sole-shaped acquisition column.
The beneficial effects of the invention are as follows: when the device is used, the feet of a user are placed on the corresponding sole shape acquisition columns, the pressure detection device detects the pressure value of the corresponding sole shape acquisition columns, then the height value of the corresponding sole position can be converted according to a formula, and the plurality of sole shape acquisition columns are equivalent to the coordinate division of the sole shape of the user, so that the acquisition of the sole shape information of the user is realized.
Further, the pressure detection device is a film pressure sensor, the film pressure sensor is an existing integral structure type pressure detection device, the film pressure sensor is provided with a plurality of force measuring points which are respectively contacted with the bottoms of the collecting columns of the sole shapes, so that the pressure collection of the collecting columns of the sole shapes can be realized through the film pressure sensor with an integral structure, and the integral structure is simple in structure and convenient to set.
Drawings
FIG. 1 is a schematic view of a configuration of an embodiment of a sole shape acquisition device according to the present invention;
FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;
FIG. 3 is a schematic diagram of the cooperation of the film pressure sensor and the signal acquisition printed board in FIG. 1;
FIG. 4 is a schematic diagram showing the film pressure sensor and the signal acquisition printed board in FIG. 3 after being unfolded;
FIG. 5 is a graph of mass M versus depth H in an experiment of the present invention;
FIG. 6 is a graph of pressure value F versus depth H in an experiment of the present invention;
FIG. 7 is a graph of mass M versus pressure value F in an experiment of the present invention;
fig. 8 is a 3D data model diagram of the sole shape in the present invention.
Detailed Description
Examples of the sole shape acquisition device are shown in fig. 1 to 7: including device frame 1, the device frame includes stand 4 and sets up upper plate 2, middle layer board 5 and the lower plywood 6 of the upper and lower direction removal of upper plate is equipped with a plurality of sole shape acquisition posts 3, and the top of each sole shape acquisition post is the bulb structure, can guarantee user's travelling comfort like this, and each sole shape acquisition post all is provided with the valgus along 7 in the downside of upper plate, and the valgus along 7 is used for stopping the cooperation with the upper plate in order to restrict the upward movement limit of each sole shape acquisition post. The middle layer plate is provided with a pressure detection device, in this embodiment, the pressure detection device is a film pressure sensor 8 with the model of IMM00014 produced by the Artemisia group flexible sensor limited company, the film sensor belongs to the prior art, the film sensor comprises a flexible film body, a plurality of measuring points are distributed on the flexible film body, the lower end of each sole shape acquisition column 3 is respectively pressed on the corresponding measuring point, and a film circuit for transmitting the acquisition signals of the corresponding measuring points outwards is arranged in the flexible film body. A signal collector for collecting pressure signals is arranged between the middle layer plate 5 and the lower layer plate 6, the signal collector comprises signal collecting printed boards 10 which are arranged on the lower side of the film pressure sensor in parallel, the film pressure sensor is connected with the signal collecting printed boards 10 through flexible belts 11, the flexible belts 11 are bent into a U shape, a signal collecting circuit is arranged on the signal collecting printed boards 10, and a connecting circuit for realizing sampling connection of the film pressure sensor 8 and the signal collecting printed boards 10 is arranged in the flexible belts. The cushion block 12 of the heightening signal acquisition board is arranged on the lower layer board, the signal acquisition printed board 10 is connected to the cushion block through screws, and the electronic devices on the signal acquisition printed board are prevented from being damaged due to contact with the lower side board through the heightening signal acquisition printed board. The signal acquisition printed board is provided with a USB interface 9 for signal output. When the method is used, the USB interface is connected with the test computer through the USB line, and the 2D model and the 3D model are calculated and generated through the test computer.
The height h=h=λf+d corresponding to the sole position, λ represents the correction coefficient, d represents the correction value, λ=0.033, d=0.54 in this embodiment, i.e. h=0.033f+0.54, F represents the pressure of the corresponding sole shape acquisition column acquired by the membrane pressure sensor. The origin process of the formula is as follows:
the sensors were tested as follows:
the above table means that the mass M of the weight required to obtain a sensor pressure value F of 65 is 319.1g, and the weight of this weight, when placed on the fire-retardant mud, can be such that the depth H of fire-retardant mud is 3mm. The relationship between the mass M and the depth H obtained from the seven sets of data is shown in fig. 5, the relationship between the pressure value F and the depth H is shown in fig. 6, and the relationship between the mass M and the pressure value F is shown in fig. 7:
namely: equation 1, m=3.7611 f+88.372
Equation 2, h=0.0089M-0.3115
Equation 3, h=0.0326 f+0.6051
Bringing equation 1 into equation 2 yields equation 4, h=0.0089 (3.7611 f+88.372) -0.3115=0.0335f+0.475.
Integrating and averaging the formula 3 and the formula 4 to obtain a final relation between the pressure value and the depth: h=0.033f+0.54
Taking the sensor pressure 65 as an example, the error value between H=0.033×65+0.54= 2.685 and the true depth of 3mm is within the allowable range; taking the sensor pressure 300 as an example, h=0.033×300+0.54=10.44, and the true depth 11.62 are also within the allowable error range, because the measurement accuracy requirement for the sole height is not particularly high. The signal acquisition printed board is connected with the film pressure sensor through the U-shaped flexible belt, so that the oversize of the whole sole profile acquisition device can be avoided.
In other embodiments of the invention: the pressure detection of each sole shape acquisition column can be realized without using a film pressure sensor, for example, the pressure sensors with the number corresponding to that of each sole shape acquisition column are arranged; the film pressure sensor can be replaced by a resistance pressure sensor or a capacitance pressure sensor; λ may also be chosen from 0.03, 0.035 or other values between 0.03 and 0.035, and d may also be chosen from 0.5, 0.6 or other values between 0.5 and 0.6.
An embodiment of the sole contour acquisition method is shown in fig. 1 to 8: the method comprises the steps that firstly, the feet of a user are placed on corresponding sole shape acquisition columns of a sole shape acquisition device; and secondly, calculating the sole surface height H at the corresponding position of the sole according to the pressure value F of the corresponding sole shape acquisition column detected by the pressure detection device, wherein H=0.033F+0.54. The specific structure of the sole shape acquisition device is the same as that described in the above-described embodiments of the sole shape acquisition device, and will not be described in detail herein.
Further, as shown in fig. 8: and generating a corresponding 3D data model through a test computer according to each H value.
Claims (2)
1. The sole shape acquisition method is characterized in that: the method comprises the steps that firstly, the feet of a user are placed on corresponding sole shape acquisition columns of a sole shape acquisition device; calculating the sole surface height H at the corresponding position of the sole according to the pressure value F of the corresponding sole shape acquisition column detected by the pressure detection device, wherein lambda is more than or equal to 0.03 and less than or equal to 0.035,0.5 and d is more than or equal to 0.6, the sole shape acquisition device comprises a device frame, a plurality of sole shape acquisition columns with axes extending in the up-down direction are distributed on the device frame, the sole shape acquisition device further comprises a pressure detection device for acquiring the pressure value on each sole shape acquisition column, the device further comprises a signal acquisition device for acquiring the pressure signal of the pressure detection device, the pressure detection device is a film pressure sensor arranged at the bottom of each sole shape acquisition column, and the film pressure sensor is provided with a plurality of force measuring points respectively contacted with the bottom of each sole shape acquisition column; or the pressure detection device is a resistance pressure sensor or a capacitance pressure sensor arranged at the bottom of each sole shape acquisition column, the device frame comprises an upper layer plate, a middle layer plate and a lower layer plate which are arranged at intervals up and down, each sole shape acquisition column is arranged on the upper layer plate, the film pressure sensor is arranged on the upper plate surface of the middle layer plate, the signal collector is a signal acquisition printed plate arranged between the middle layer plate and the lower layer plate, the signal acquisition printed plate is provided with a signal acquisition circuit, the film pressure sensor is connected with the signal acquisition printed plate through a flexible belt, a connecting circuit for realizing the sampling connection of the film pressure sensor and the signal acquisition printed plate is arranged in the flexible belt, the flexible belt is of a U-shaped structure, the lower layer plate is provided with a cushion block for heightening the signal acquisition printed plate, the signal acquisition printed plate is connected on the cushion block through a screw, the signal acquisition printed plate is provided with a USB interface for signal output, and the pressure detection device is a film pressure sensor arranged at the bottom of each sole shape acquisition column and is provided with a plurality of acquisition points respectively contacted with the sole shape.
2. The sole shape acquisition method according to claim 1, characterized in that: λ=0.033, d=0.54.
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