Height detection device

Abstract

The invention relates to the technical field of height measurement, in particular to a height detection device which comprises the steps that a testee is guided to stand upright, and the back face of the body is attached to a vertical plane; acquiring limb position information of the front side of the testee by using a binocular camera, and judging whether the limb shapes of all parts of the front side of the testee are kept in mirror symmetry along the vertical direction or not according to the limb position information; if the limb forms of all the parts of the front face of the testee are not kept in mirror symmetry in the vertical direction, the limb forms of all the parts of the front face of the testee are corrected, and if the limb forms of all the parts of the front face of the testee are kept in mirror symmetry in the vertical direction, the vertical plane is controlled to rotate by any angle ranging from 10 degrees to 30 degrees to incline towards the back; and the height of the testee is measured in an inclined state of the vertical plane. Therefore, the problem of how to improve the height measurement accuracy is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of height measurement, and in particular to a height detection device. Background Art

[0002] Currently, there are various devices and methods for height detection and measurement. For example, in the traditional mechanical structure, a person's height is measured by a sliding bar that slides up and down above the head after the person stands up. Another example is the application of visual camera technology, laser irradiation and other technologies in the field of height detection to achieve contactless measurement.

[0003] Due to the different forms of height detection and the different places of impact on the market, the accuracy of height detection is completely different. The inaccuracy of height detection is mainly due to: the body shapes of different testers vary greatly, some have hunched backs, some have tilted shoulders, etc. Everyone has a different standing posture, which will directly affect the accuracy of the measurement.

[0004] The National Physical Fitness Monitoring Center has issued the "National Physical Fitness Measurement Standard (Revised in 2023)", which has specific requirements for height testing. Although this standard can promote the standardization of testing, it cannot absolutely avoid deviations in testing; the main reason is that when the tester stands, the naturally formed shape of the human body is difficult to correct to meet the requirements of the standard. Everyone's body shape is different, and it is difficult to guarantee that everyone's height test is very accurate. Summary of the invention

[0005] The invention provides a height detection device to solve the problem of how to improve the accuracy of height measurement.

[0006] The first aspect of the present invention provides a height detection method, comprising the following steps: guiding a tester to stand upright with the back of the body in contact with a vertical plane; using a binocular camera to collect limb position information of the tester's front, and judging whether the limb shapes of various parts of the tester's front are mirror-symmetrical along the vertical direction according to the limb position information; if the limb shapes of various parts of the tester's front are not mirror-symmetrical along the vertical direction, correcting the limb shapes of various parts of the tester's front, if the limb shapes of various parts of the tester's front are mirror-symmetrical along the vertical direction, controlling the vertical plane to rotate to any angle of 10 to 30 degrees to tilt toward the back; and measuring the tester's height when the vertical plane is tilted.

[0007] Optionally, correcting the shape of each part of the front limbs of the tester includes: applying a force to a bent part of the tester; and correcting the shape of each part of the limbs by the force.

[0008] Optionally, before correcting the front body shape of each part of the tester, the method further includes: generating voice prompts for the body shape of each part; and using the voice prompts to guide the tester to adjust the body shape of each part.

[0009] Optionally, measuring the height of the tester in a tilted vertical plane includes: controlling a pressure plate above the tester to move in a direction close to the tester's head; if it is detected that the actual resistance applied to the pressure plate is greater than a preset resistance, determining that the pressure plate has compacted the tester's head, and controlling a laser rangefinder to measure a first distance between the laser rangefinder and the pressure plate; obtaining a second distance between the laser rangefinder and a sole plate under the tester's feet, and calculating the tester's height based on the first distance, the second distance and the thickness of the pressure plate.

[0010] Optionally, the limb position information includes: the tip of the nose, the chin, the midpoint of the chest, the pubic symphysis and the midpoint of the heel, and whether the limb shapes of various parts of the front of the tester remain mirror-symmetrical along the vertical direction is determined based on the limb position information, including: if it is detected that the tip of the nose, the chin, the midpoint of the chest, the pubic symphysis and the midpoint of the toes are on a mirror plane of mirror symmetry, then it is determined that the limb shapes of various parts of the front of the tester remain mirror-symmetrical along the vertical direction; otherwise, it is determined that the limb shapes of various parts of the front of the tester do not remain mirror-symmetrical along the vertical direction.

[0011] The second aspect of the present invention provides a height detection device, including: a support frame; a detection plate, the bottom of the detection plate is connected to the bottom of the support frame by a rotation axis; a groove, the groove limits the head of the tester on the vertical plane of the detection plate, the back of the tester's head is embedded in the groove, the size of the back of the head is compensated by the groove, the top of the tester's head is flush with the detection board, and the tester is assisted to maintain a vertical state; a binocular camera, used to collect limb position information of the tester's front; a correction component, used to correct the limb shape of each part of the tester's front; an adjustment component, used to adjust the detection plate to rotate about the rotation axis, so that the detection plate rotates at any angle from 10 degrees to 30 degrees and tilts toward the back; a measuring component, used to measure the height of the tester when the detection board is tilted.

[0012] Optionally, the correction component includes first to fourth correction sub-components arranged on both sides of the central axis of the detection board, wherein the first correction sub-component and the second correction sub-component cooperate with each other to correct the upper limbs of the tester, and the third correction sub-component and the fourth correction sub-component cooperate with each other to restrict the lower limbs of the tester.

[0013] Optionally, the first correcting subassembly and the second correcting subassembly have the same structure, and the structure of the first correcting subassembly and the second correcting subassembly includes: a moving unit, a first servo motor, a first gear, a second gear, a second gear frame, a bearing frame, a bearing, a first correcting plate, a rack and a guide rail, wherein the telescopic end of the first electric telescopic rod in the moving unit is connected to the first correcting plate, and the power output end of the first servo motor is connected to the first gear; the first gear is meshed with the rack through a second gear arranged on the second gear frame; the second gear frame is fixedly connected to the moving unit, and the second gear frame is fixedly connected to the moving unit, and the L-shaped bearing frame and the inverted L-shaped guide rail on both sides below the fixed moving unit are rollingly connected through bearing locking.

[0014] Optionally, the third correcting subassembly and the fourth correcting subassembly have the same structure, and the structure of the third correcting subassembly and the fourth correcting subassembly include: the telescopic end of the second electric telescopic rod and the second correcting plate, wherein the telescopic end of the second electric telescopic rod is connected to the second correcting plate.

[0015] Optionally, the adjustment component includes a first adjustment sub-component, a second adjustment sub-component and a driving sub-component, wherein the first adjustment sub-component includes: a first curved rod and a second curved rod hinged through a first rotating joint, and the second adjustment sub-component includes: a third sub-rod and a fourth sub-rod hinged through a second rotating joint; the two free ends of the first adjustment sub-component respectively form a first four-bar mechanism with the support frame and the upper back side of the detection plate through a rotating axis, and the two free ends of the second adjustment sub-component respectively form a second four-bar mechanism with four equal sides through a rotating axis with the first adjustment sub-component, and a driving sub-component is arranged between the diagonal rotation nodes of the second four-bar mechanism, and the driving sub-component drives the diagonal rotation nodes of the first adjustment sub-component and the second adjustment sub-component to perform telescopic movement with a limited stroke, and the inclination angle of the detection plate is adjusted through the cooperation of the first adjustment sub-component and the second adjustment sub-component.

[0016] Optionally, the first four-bar mechanism includes: a first curved bar, a second curved bar, a detection plate and a support frame, which are connected in sequence through axial rotation, wherein one end of the first curved bar and one end of the second curved bar are connected to each other through a first rotation joint, the other end of the first curved bar and the support frame are connected to each other through a rotation axis, and the other end of the second curved bar and the detection plate are connected to each other through a rotation axis.

[0017] Optionally, the second four-bar mechanism includes: a third sub-rod, a fourth sub-rod, a partial curved rod of the second curved rod and a partial curved rod of the first curved rod, which are connected in sequence through axial rotation; wherein, one end of the third sub-rod and one end of the fourth sub-rod are connected to each other through a second rotation joint, one end of the partial curved rod of the first curved rod and one end of the partial curved rod of the second curved rod are connected to each other through a first rotation joint, the other end of the third sub-rod and the other end of the partial curved rod of the first curved rod are connected to each other through a rotation axis, and the other end of the fourth sub-rod and the other end of the partial curved rod of the second curved rod are connected to each other through a rotation axis.

[0018] Optionally, one end of the driving subassembly is connected to the hinge shaft of the first rotary joint; the other end of the driving subassembly is connected to the hinge shaft of the second rotary joint.

[0019] Optionally, the driving subassembly includes a spring for maintaining tension and a cylinder, wherein the spring is disposed outside the cylinder, and two ends of the cylinder are respectively connected to the first rotary joint and the second rotary joint.

[0020] Optionally, the measuring component includes a connecting plate, a fixed plate, a mounting plate, a screw, a pressure plate, a transmission block, a second servo motor and a laser rangefinder, wherein the pressure plate and the laser rangefinder are arranged on the front of the detection plate, and the connecting plate, the fixed plate, the screw, the transmission block and the second servo motor are arranged on the back of the detection plate; the laser rangefinder is arranged under the mounting plate, and the mounting plate is fixedly connected to the detection plate; the connecting plate and the fixed plate are both vertically fixedly connected to the detection plate, and the screw is relatively rotatably mounted on the connecting plate and the fixed plate; the transmission block passes through the detection plate and is fixedly connected to the pressure plate; the second servo motor is fixed on the fixed plate, and its power output end is connected to the screw.

[0021] Optionally, it also includes: a foot support plate is vertically fixed at the bottom of the front side of the detection plate, and two U-shaped heel fixators are provided on the upper surface of the foot support plate; the opening angle of the two heel fixators is 60 degrees.

[0022] Thus, the present invention includes the following beneficial effects:

[0023] When measuring the height of the tester, the embodiment of the present invention first guides the tester to stand upright and the back of the body to fit closely with the vertical plane. Since the tester can make the posture during the test more standard when the tester fits closely, the measurement error is reduced by guiding the back of the tester to actively fit the detection plate; secondly, the limb position information collected by the binocular camera determines whether the limb morphology of each part of the tester maintains mirror symmetry. Since the limb morphology of each part maintains mirror symmetry, it indicates that the posture of the tester is standard, so the tester's posture can be accurately determined by the binocular camera; then when the tester's posture is not standard, the tester's posture can be corrected, and after the tester's posture is standard, the vertical plane is controlled to tilt, and the tester's height is measured in the vertical plane tilted state. Since the tester has no support point in the vertical plane tilted state, the body will naturally be in a tense state, so that the tester's body is more in line with the test standard. Thus, the embodiment of the present invention can enable each tester to measure his height in a relatively standard posture, avoid the influence of different people's standing postures on the height measurement, and effectively improve the accuracy of height measurement.

[0024] The greatest advantage of the present invention is that it breaks through the traditional method of measuring height, including the detection method of standing upright or lying on one's back; because the feet of the human body support the human body, the supporting force can make the tester unconsciously tilt the body at any angle; the randomness of this tilt brings unpredictable results to the height measurement, resulting in non-standard and inaccurate measurement.

[0025] The present invention allows the tester to unload force from the feet by allowing the tester to lean back at a certain angle toward the back, thereby removing the supporting force of the feet on the human body, forcing the tester's body to accept standard testing rules, and allowing the test results to be kept accurate to the greatest extent.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0028] Figure 1 is a flow chart of a height detection method according to an embodiment of the present invention;

[0029] Figure 2 Schematic diagram of different positions of the nose tip, chin, midpoint of the chest cavity, pubic symphysis and midpoint of the heel of the tester when the human body is standing upright and bending sideways according to an embodiment of the present invention;

[0030] Figure 3is a structural diagram of a height detection device according to an embodiment of the present invention;

[0031] Figure 4 is a structural diagram of a correction component according to an embodiment of the present invention;

[0032] Figure 5 is a structural diagram of a measurement component according to an embodiment of the present invention;

[0033] Figure 6 FIG. 4 is a structural diagram of a height detection device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0034] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0035] The current inaccuracy of height measurement is probably due to the following reasons: 1. Due to the influence of the thickness of the tester's hair, the detection method with contact with the hair is more accurate than the detection method without contact with the hair; 2. Because the body shapes of different testers vary greatly, some have hunched backs, some have tilted shoulders, etc. Everyone has a different standing posture, which will directly affect the accuracy of the measurement.

[0036] Based on this, the National Physical Fitness Monitoring Center promulgated the "National Physical Fitness Measurement Standard (Revised in 2023)", which makes specific requirements for height testing. Although this standard can promote the standardization of testing, it cannot absolutely avoid deviations in testing; the main reason is that when the tester stands, the naturally formed shape of the human body is difficult to correct to meet the requirements of the standard. Everyone's body shape is different, and it is difficult to ensure that everyone's height test is very accurate.

[0037] In order to ensure that each tester can meet the requirements of the measurement standards, the embodiments of the present invention propose a height detection method and device to solve the problem of how to improve the accuracy of height measurement. The height detection method and device of the embodiments of the present invention are described below with reference to the accompanying drawings.

[0038] Specifically, Figure 1 A schematic flow chart of a height detection method provided in an embodiment of the present invention.

[0039] like Figure 1 As shown, the height detection method comprises the following steps:

[0040] In step S101 , the tester is guided to stand upright with the back of the body in contact with a vertical plane.

[0041] It can be understood that the fit in the embodiment of the present invention can refer to a close fit, that is, to allow the test subject to keep as little gap as possible between the back of the body and the vertical plane during the test, or even to leave no gap. Therefore, the embodiment of the present invention guides the test subject to stand upright, and the height detected in the upright state is a more accurate result. At the same time, the back of the body is guided to fit the vertical plane, and the vertical plane is used to assist the test subject to stand upright. Therefore, by guiding the test subject to stand upright and the back of the body to fit the vertical plane, the test subject actively adjusts his standing posture to meet the measurement standard of the test.

[0042] In an embodiment of the present invention, the embodiment of the present invention can use a variety of methods to guide the tester to stand upright and fit the back of the body to the vertical plane. For example, relevant guiding voices can be played through a voice device, and relevant guiding texts can be displayed on a display screen. The back of the body fits the vertical plane and the content of the relevant guiding texts can be, for example, "Please stand upright and fit the back of the body to the vertical plane"; for example, a guide can also be set up to guide the tester. When performing a height test, those skilled in the art can select any one or more of the above methods according to the situation without specific limitation.

[0043] It should be noted that, in the test guidance process, the embodiment of the present invention can also guide the test toes to be separated by 60 degrees. By guiding the test toes to be separated, the tester can better maintain an upright posture.

[0044] In the embodiment of the present invention, the back side includes the heel, sacrum, and two shoulder blades. In specific applications, for example: the embodiment of the present invention makes detection requirements for height detection, guiding the tester to stand barefoot on the bottom plate of the height tester with his back to the column, with the torso naturally straight, the head upright, the eyes looking straight ahead, and the upper edge of the tragus and the lowest point of the lower edge of the eye socket in the horizontal position; the upper limbs are naturally drooping, the legs are straight, the heels are close together, the toes are separated by about 60°, the heels, sacrum and the two shoulder blades are in contact with the column, forming a "three-point one-line" standing posture.

[0045] Next, the height detection device according to the embodiment of the present invention will be described with reference to the accompanying drawings.

[0046] Figure 3 4 is a block diagram of a height detection device according to an embodiment of the present invention.

[0047] like Figure 3 As shown, the height detection device includes: a support frame 1, a detection plate 2, a groove 24, a binocular camera 11, an adjustment component and a measurement component.

[0048] Among them, the bottom of the detection board 2 is connected to the bottom of the support frame 1 by a rotation axis; the groove 24 limits the tester's head to the vertical plane of the detection board, and the back of the tester's head is embedded in the groove 24. The groove 24 compensates for the size of the back of the head, so that the top of the tester's head is flush with the detection board and assists the tester to maintain a vertical state; the binocular camera 11 is used to collect the limb position information of the tester's front; the correction component is used to correct the limb shape of each part of the tester's front; the adjustment component is used to adjust the detection board 2 to tilt toward the back at any angle of 10 to 30 degrees from the rotation axis; the measurement component is used to measure the height of the tester when the detection board 2 is tilted.

[0049] It can be understood that the embodiment of the present invention can determine whether the limb shapes of various parts of the tester maintain mirror symmetry through the limb position information collected by the binocular camera. Since when the limb shapes of various parts maintain mirror symmetry, it indicates that the tester's posture is standard, the tester's posture can be accurately determined through the binocular camera; then when the tester's posture is not standard, the tester's posture can be corrected, and after the tester's posture is standard, the vertical plane is controlled to tilt, and the tester's height is measured in the tilted state of the vertical plane. Since the tester has no support point in the tilted state of the vertical plane, the body will naturally be in a tense state, making the tester's body more in line with the test standard.

[0050] It should be noted that the groove is to maintain verticality and restrict the head to the vertical plane. The functions of the groove include: first, to compensate for the size of the back of the head so that the top of the tester's head is flush with the test board; second, to position the head and assist the human body to maintain a vertical state.

[0051] In an embodiment of the present invention, the correction component includes first to fourth correction sub-components arranged on both sides of the central axis of the detection board 2, wherein the first correction sub-component and the second correction sub-component cooperate with each other to correct the shoulders of the tester, and the third correction sub-component and the fourth correction sub-component cooperate with each other to restrict the legs of the tester.

[0052] It can be understood that the embodiments of the present invention can apply force to the protruding and curved parts of the tester's limbs to ensure that the various parts of the frontal shape of the tester's body maintain mirror symmetry. For example, force can be applied to the legs and shoulders to fix the legs, and different forces can be applied through the shoulders, so that the shoulders maintain mirror symmetry under different forces.

[0053] Specifically, if Figure 4As shown, the structures of the first correction subassembly and the second correction subassembly are the same, and the structures of the first correction subassembly and the second correction subassembly include: a moving unit 31, a first servo motor 311, a first gear 312, a second gear 313, a second gear frame 3131, a bearing frame 314, a bearing 315, a first correction plate 32, a rack 33 and a guide rail 34, wherein the telescopic end of the first electric telescopic rod in the moving unit 31 is connected to the first correction plate 32, and the power output end of the first servo motor 311 is connected to the first gear 312; the first gear 312 is meshed with the rack 33 through the second gear 313 set on the second gear frame 3131; the second gear frame 3131 is fixedly connected to the moving unit 31, and the second gear frame 3131 is fixedly connected to the moving unit 31, and the L-shaped bearing frame 314 and the inverted L-shaped guide rail on both sides below the fixed moving unit 31 are engaged and rollingly connected through bearings 315. As shown Figure 4 As shown, the bearing 315 is tilted. The advantage of the tilted setting is that the first electric telescopic rod in the mobile unit 31 can withstand forces from two directions at the same time, thereby ensuring balanced force.

[0054] like Figure 3 As shown, the structures of the third correcting subassembly and the fourth correcting subassembly are the same, and the structures of the third correcting subassembly and the fourth correcting subassembly include: the telescopic end of the second electric telescopic rod 41 and the second correcting plate 42, wherein the telescopic end of the second electric telescopic rod 41 and the second correcting plate 42 are connected.

[0055] In an embodiment of the present invention, the adjustment component includes a first adjustment sub-component, a second adjustment sub-component and a driving sub-component, wherein the two free ends of the first adjustment sub-component respectively form a first four-bar mechanism with the support frame 1 and the upper back side of the detection plate 2 through a rotating axis, the two free ends of the second adjustment sub-component respectively form a second four-bar mechanism with four equal sides through a rotating axis with the first adjustment sub-component, and a driving sub-component is arranged between the diagonal rotation nodes of the second four-bar mechanism. The driving sub-component drives the diagonal rotation nodes of the first adjustment sub-component and the second adjustment sub-component to perform telescopic movement with a limited stroke, and the inclination angle of the detection plate 2 is adjusted through the cooperation of the first adjustment sub-component and the second adjustment sub-component.

[0056] It can be understood that the embodiment of the present invention can adjust the inclination angle of the detection plate 2 through the first adjusting sub-assembly, the second adjusting sub-assembly and the driving sub-assembly, and measure the height of the tester in the inclined state of the vertical plane. Since the tester has no support point in the inclined state of the vertical plane, the body will naturally be in a tense state, making the tester's body more in line with the test standards.

[0057] Specifically, if Figure 3As shown, the first adjusting subassembly includes a first curved rod 51 and a second curved rod 52 hinged by a first rotating joint, and the first four-bar mechanism includes: a first curved rod 51, a second curved rod 52, a detection plate 2 and a support frame 1 connected in sequence by axial rotation; wherein, one end of the first curved rod 51 and one end of the second curved rod 52 are interconnected by the first rotating joint, the other end of the first curved rod 51 and the support frame 1 are interconnected by a rotating axis, and the other end of the second curved rod 52 and the detection plate 2 are connected by a rotating axis.

[0058] like Figure 3 As shown, the second adjusting subassembly includes a first sub-rod 53 and a second sub-rod 54 hinged through a second rotary joint, wherein one end of the driving subassembly is connected to the hinge axis of the first rotary joint; and the other end of the driving subassembly is connected to the hinge axis of the second rotary joint.

[0059] like Figure 3 As shown, the driving subassembly includes a spring 55 for maintaining tension and a cylinder 56, wherein the spring 55 is disposed outside the cylinder 56, and two ends of the cylinder 56 are respectively connected to the first rotary joint and the second rotary joint.

[0060] The spring always keeps a tension state, that is, there is always tension. When the cylinder has no force, the spring will pull the second four-bar mechanism to make the detection plate vertical; when the cylinder is inflated, the cylinder push rod will extend, squeeze the spring, and make the detection plate tilt.

[0061] The first four-bar mechanism includes: a first curved rod 51, a second curved rod 52, a detection plate 2 and a support frame 1 which are connected in sequence through axial rotation; wherein one end of the first curved rod 51 and one end of the second curved rod 52 are connected to each other through a first rotation joint, the other end of the first curved rod 51 and the support frame 1 are connected to each other through a rotation axis, and the other end of the second curved rod 52 and the detection plate 2 are connected to each other through a rotation axis.

[0062] The second four-bar mechanism includes: a third sub-rod 53, a fourth sub-rod 54, a partial curved rod of the second curved rod 52 and a partial curved rod of the first curved rod 51, which are connected in sequence through axial rotation; wherein, one end of the third sub-rod 53 and one end of the fourth sub-rod 54 are connected to each other through a second rotation joint, one end of the partial curved rod of the first curved rod 51 and one end of the partial curved rod of the second curved rod 52 are connected to each other through a first rotation joint, the other end of the third sub-rod 53 and the other end of the partial curved rod of the first curved rod 51 are connected to each other through a rotation axis, and the other end of the fourth sub-rod 54 and the other end of the partial curved rod of the second curved rod 52 are connected to each other through a rotation axis.

[0063] In the embodiment of the present invention, Figure 5As shown, the measuring assembly includes a connecting plate 22, a fixing plate 23, a mounting plate 25, a screw 61, a pressure plate 62, a transmission block 621, a second servo motor 63 and a laser rangefinder 64, wherein the pressure plate 62 and the laser rangefinder 64 are arranged on the front of the detection plate 2, and the connecting plate 22, the fixing plate 23, the screw 61, the transmission block 621 and the second servo motor 63 are arranged on the back of the detection plate 2; the laser rangefinder 64 is arranged below the mounting plate 25, and the mounting plate 25 is fixedly connected to the detection plate 2; the connecting plate 22 and the fixing plate 23 are both vertically fixedly connected to the detection plate 2, and the screw 61 is relatively rotatably mounted on the connecting plate 22 and the fixing plate 23; the transmission block 621 passes through the detection plate 2 and is fixedly connected to the pressure plate 62; the servo motor 63 is fixed on the fixing plate 23, and its power output end is connected to the screw 61.

[0064] The servo motor 63 can be set to a working torque, and when the working torque is exceeded, the servo motor will stop working. This motor can be used to carry 621 to move on the screw when working; when it is overhead, the torque suddenly increases and stops working.

[0065] In the embodiment of the present invention, Figure 3 and Figure 6 As shown, the height detection device also includes: a foot support plate 21 is vertically fixed at the bottom of the front side of the detection plate 2, and two U-shaped heel fixers 211 are provided on the upper surface of the foot support plate 21; the opening angle of the two heel fixers 211 is 60 degrees.

[0066] It should be noted that the above explanations of the embodiment of the height detection method are also applicable to the height detection device of this embodiment, and will not be repeated here.

[0067] According to the height detection device proposed in the embodiment of the present invention, the limb position information collected by the binocular camera determines whether the limb shapes of each part of the tester maintain mirror symmetry. Since the limb shapes of each part maintain mirror symmetry, it indicates that the posture of the tester is standard, so the posture of the tester can be accurately determined by the binocular camera; then, when the posture of the tester is not standard, the posture of the tester can be corrected, and after the posture of the tester is standard, the vertical plane is controlled to tilt, and the height of the tester is measured in the tilted state of the vertical plane. Since the tester has no support point in the tilted state of the vertical plane, the body will naturally be in a tense state, making the tester's body more in line with the test standard. Therefore, the embodiment of the present invention can enable each tester to measure his height in a relatively standard posture, avoid the influence of different people's standing postures on the height measurement, and effectively improve the accuracy of height measurement.

[0068] The present invention also includes the following steps, through which the structure of the present invention can be further summarized or explained in detail.

[0069] In step S102, the binocular camera is used to collect the limb position information of the tester's front, and it is determined whether the limb shapes of the tester's front parts are mirror-symmetrical along the vertical direction according to the limb position information. The binocular camera 11 is installed on the support frame 1 and is used to collect the tester's body parameters.

[0070] The limb position information may include: the tip of the nose, the chin, the midpoint of the chest, the pubic symphysis, and the midpoint of the heel. A binocular camera is a device that uses the principle of stereoscopic vision to obtain three-dimensional information of a scene. By simulating the human binocular vision system, two cameras are used to capture two images of the scene from different angles, and then the depth information of the objects in the scene is determined by calculating the position deviation of corresponding points in the image (called parallax).

[0071] It is understandable that in the embodiments of the present invention, a computer can be used to process the information collected by the binocular camera, and the limb position information can be analyzed to determine whether the limb shapes of the front parts of the tester's body maintain mirror symmetry.

[0072] In the embodiment of the present invention, Figure 2 As shown, judging whether the limb shapes of the various parts of the front of the tester are mirror-symmetrical along the vertical direction according to the limb position information, including: if it is detected that the nose tip, chin, midpoint of the chest cavity, pubic symphysis and midpoint of the toes are on the mirror plane of mirror symmetry, then it is determined that the limb shapes of the various parts of the front of the tester are mirror-symmetrical along the vertical direction; otherwise, it is determined that the limb shapes of the various parts of the front of the tester are not mirror-symmetrical along the vertical direction.

[0073] It can be understood that when the tester is standing upright, the limbs of the tester's front part are mirror-symmetrical along the vertical direction. Therefore, the embodiment of the present invention determines whether the tester is standing upright by judging whether the nose tip, chin, midpoint of the chest cavity, pubic symphysis and midpoint of the toes are on the mirror plane of mirror symmetry. Figure 2 As shown, Figure 2 The human body model on the left is an example of maintaining mirror symmetry. Figure 2 The human body model on the right is an example of a situation where mirror symmetry is not maintained.

[0074] Specifically, 1. System construction and calibration:

[0075] A binocular vision system was built, using two cameras to capture the frontal image of the test subject from symmetrical positions.

[0076] Calibrate the binocular camera to obtain the internal and external parameters of the camera to ensure that the three-dimensional coordinates of the objects in the scene can be accurately calculated. Traditional methods such as Zhang Zhengyou's calibration method can be used, or more efficient calibration techniques such as direct linear transformation and perspective transformation short array method can be explored.

[0077] 2. Image acquisition and preprocessing:

[0078] Collect the tester's front limb image to ensure that the image is clear and the feature points are obvious. Preprocess the image, including grayscale, filtering and denoising, to improve the accuracy of subsequent feature point extraction.

[0079] 3. Feature point extraction and matching:

[0080] Use feature point detection algorithms such as SIFT, SURF or ORB to extract key points in the image. For binocular images, find the corresponding feature point pairs through feature point matching algorithms.

[0081] 4. Stereo matching and 3D reconstruction:

[0082] The disparity map is calculated using a stereo matching algorithm (such as SGBM) to obtain depth information. The 3D limb model of the tester is reconstructed based on the disparity map and camera parameters.

[0083] 5. Symmetry analysis:

[0084] For the limb model obtained by 3D reconstruction, define the symmetry plane (such as the vertical plane through the center of the body). Calculate the corresponding points of each body part on both sides of the symmetry plane and analyze the position and angle differences of these points. Design an algorithm to evaluate the symmetry of the limb morphology, which can be achieved by calculating the distance and angle difference between corresponding points or using machine learning methods to predict symmetry.

[0085] 6. Result output:

[0086] Output the analysis results in a visual way, such as marking the parts with large symmetry differences on the tester's image. Provide quantitative indicators for symmetry assessment, such as symmetry scores or difference percentages.

[0087] 7. System optimization:

[0088] According to the experimental results, the camera parameters are adjusted, the feature point extraction and matching algorithms are improved, and the symmetry analysis method is optimized to improve the accuracy and robustness of the system.

[0089] In step S103, if the limbs of the tester's front part do not maintain mirror symmetry along the vertical direction, the limbs of the tester's front part are corrected. If the limbs of the tester's front part maintain mirror symmetry along the vertical direction, the vertical plane is controlled to tilt and rotate at any angle of 10 to 30 degrees toward the back. Preferably, the vertical plane is optimally tilted and rotated by 20 degrees.

[0090] It is understandable that, when the test subject fails to maintain an upright position that meets the standard, or in other words, the test subject fails to adjust his upright position to meet the standard conditions within a period of time, the embodiment of the present invention can correct the limb shapes of the test subject's front part, and when the test subject is in an upright position, control the inclination of the vertical plane, and measure the test subject's height in the inclined vertical plane state. Since the test subject has no support point in the inclined vertical plane state, the body will naturally be in a tense state, making the test subject's body more in line with the test standard.

[0091] If the front shape of the tester's body remains in a linear symmetrical state, the plane carries the tester's entire body with the bottom of the heel as the axis and rotates toward the tester's back at any angle of 10 to 30 degrees. The effect of tilting to the above angle is to make the tester's lower limbs unable to exert force, thereby unloading the force on the body; thereby making it impossible to actively control the body to bend, making it easier for the device to adjust the bent body.

[0092] In the embodiment of the present invention, correcting the shapes of various parts of the front limbs of the tester includes: applying a force to the bent parts of the tester; and correcting the shapes of various parts of the limbs by the force.

[0093] Among them, the bent parts may be legs, waist, shoulders, etc.

[0094] It can be understood that the embodiments of the present invention can apply force to the protruding and curved parts of the tester's limbs to ensure that the various parts of the frontal shape of the tester's body maintain mirror symmetry. For example, force can be applied to the legs and shoulders to fix the legs, and different forces can be applied through the shoulders, so that the shoulders maintain mirror symmetry under different forces.

[0095] In the embodiment of the present invention, before correcting the body shapes of the tester's front parts, the method further includes: generating voice prompts for the body shapes of the tester's front parts; and guiding the tester to adjust the body shapes of the tester's front parts using the voice prompts.

[0096] It can be understood that before the embodiment of the present invention applies force to correct the shape of each part of the tester's front limbs, the tester can be guided to adjust the shape of each part of the limbs through voice prompts, and the tester can be guided to actively adjust through voice prompts, giving the user a better height measurement experience.

[0097] It should be noted that if the limb shapes of the various parts of the test subject's front body still do not maintain mirror symmetry during the voice prompts, the limb shapes of the various parts of the test subject's front body will be corrected by applying force. At the same time, in order to give the user a better experience, the user can be informed by voice or other means that the limb shapes of various parts will be corrected before the force is applied.

[0098] In step S104, the height of the tester is measured in a state where the vertical plane is tilted.

[0099] It can be understood that since the test subject has no support point when the vertical plane is tilted, the body will naturally be in a tense state, making the test subject's body more in line with the test standards. Therefore, the present invention is implemented to measure the test subject's height when the vertical plane is tilted, which can effectively improve the accuracy of height measurement.

[0100] like Figure 3-Figure 6 As shown, in an embodiment of the present invention, the height of a tester is measured in a tilted vertical plane state, including: controlling a pressure plate above the tester to move in a direction close to the tester's head; if it is detected that the actual resistance of the pressure plate is greater than a preset resistance, it is determined that the pressure plate has compacted the tester's head, and a laser rangefinder is controlled to measure a first distance between the laser rangefinder and the pressure plate; a second distance between the laser rangefinder and the sole of the foot under the tester's feet is obtained, and the height of the tester is calculated according to the first distance, the second distance and the thickness of the pressure plate.

[0101] Among them, the preset resistance refers to the force that can compact the test subject's hair without causing physical harm to the test subject. The preset resistance can be calibrated in advance. For example, it can be comprehensively calibrated according to factors such as the test subject's age, gender, body shape, etc., and the preset resistance suitable for the test subject can be determined according to the calibrated correspondence table.

[0102] It can be understood that after the embodiment of the present invention uses a pressing plate that is perpendicular to a relative plane to press the tester's hair, the distance from the heel to the pressing plate is directly measured, which is the tester's height, thereby avoiding the influence of the tester's hair thickness on the height measurement and further improving the accuracy of height detection.

[0103] Specifically, since the laser rangefinder and the sole plate under the tester's feet are usually fixed, the second distance can be calibrated and determined before the height test. Of course, the second distance can also be directly detected by the laser rangefinder when the tester is not standing on the sole plate.

[0104] Since the pressing plate is movable, after the tester's hair is pressed with the pressing plate perpendicular to the relative plane, the first distance is directly detected by the laser rangefinder. At the same time, the influence of the thickness of the pressing plate on the measurement accuracy is also considered. Therefore, after obtaining the first distance and the second distance, the actual height of the tester is calculated based on the first distance, the second distance and the thickness of the pressing plate.

[0105] The following is an example to illustrate the height detection method, as follows:

[0106] a. Ask the tester to stand upright with the back of the body in close contact with the vertical plane; the tester's toes are separated by 60 degrees;

[0107] b. Use a binocular camera to collect the limb position information of the tester's front face. The computer analyzes the collected limb position information and determines whether the limb shapes of each part of the tester's front face are mirror-symmetrical;

[0108] c. If there is no straight line symmetry, the computer will prompt the tester through the voice system which part of the limb needs to be corrected;

[0109] d. If the front view of the subject's body remains linearly symmetrical, the plane carries the subject's entire body and rotates it toward the back of the subject at any angle between 10 and 30 degrees with the bottom of the heel as the axis.

[0110] e. After pressing the subject's hair with a vertical pressing plate relative to the plane, directly measure the distance from the heel to the pressing plate, which is the subject's height.

[0111] According to the height detection method proposed in the embodiment of the present invention, when measuring the height of the tester, first guide the tester to stand upright and the back of the body to fit closely with the vertical plane. Since the tester can make the posture during the test more standard when the tester fits closely, the measurement error is reduced by guiding the tester to actively fit; secondly, determine whether the limbs of each part of the tester maintain mirror symmetry through the limb position information collected by the binocular camera. Since the limbs of each part maintain mirror symmetry, it indicates that the posture of the tester is standard, so the tester's posture can be accurately determined by the binocular camera; then, when the tester's posture is not standard, the tester's posture can be corrected, and after the tester's posture is standard, control the vertical plane to tilt, and measure the tester's height in the vertical plane tilted state. Since the tester has no support point in the vertical plane tilted state, the body will naturally be in a tense state, so that the tester's body is more in line with the test standard. Thus, the embodiment of the present invention can make each tester measure his height in a relatively standard posture, avoid the influence of different people's standing postures on the height measurement, and effectively improve the accuracy of height measurement.

[0112] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0113] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "N" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0114] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or N executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present invention belong.

[0115] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, the steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array, a field programmable gate array, etc.

[0116] A person of ordinary skill in the art may understand that all or part of the steps carried by the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the above-mentioned program may be stored in a computer-readable storage medium, which, when executed, includes one of the steps of the method embodiment or a combination thereof.

[0117] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A height detection device, characterized in that: include: Support frame (1); A detection plate (2), the bottom of the detection plate (2) being connected to the bottom of the support frame (1) via a rotating shaft; A groove (24), wherein the groove (24) limits the head of the tester to the vertical plane of the test board, and the back of the head of the tester is embedded in the groove (24). The groove (24) compensates for the size of the back of the head, so that the top of the head of the tester is flush with the test board, and assists the tester to maintain a vertical state; A binocular camera (11) is used to collect limb position information of the test subject from the front; A correction component, used for correcting the limb shapes of each part of the front of the tester; An adjustment component, used for adjusting the detection plate (2) to tilt toward the back at any angle of 10 to 30 degrees on the rotation axis; A measuring component is used to measure the height of the tester when the detection board (2) is in an inclined state.

2. The height detection device according to claim 1, characterized in that: The correction component comprises first to fourth correction sub-components arranged on both sides of the central axis of the detection board (2), wherein the first correction sub-component and the second correction sub-component cooperate with each other to correct the upper limbs of the tester, and the third correction sub-component and the fourth correction sub-component cooperate with each other to restrict the lower limbs of the tester; The first correction subassembly and the second correction subassembly have the same structure, and the first correction subassembly and the second correction subassembly include: a moving unit (31), a first servo motor (311), a first gear (312), a second gear (313), a second gear frame (3131), a bearing frame (314), a bearing (315), a first correction plate (32), a rack (33) and a guide rail (34), wherein: The telescopic end of the first electric telescopic rod in the mobile unit (31) is connected to the first correction plate (32), and the power output end of the first servo motor (311) is connected to the first gear (312); the first gear (312) is meshedly connected to the rack (33) via a second gear (313) arranged on a second gear frame (3131); the second gear frame (3131) is fixedly connected to the mobile unit (31), and the second gear frame (3131) is fixedly connected to the mobile unit (31), and the L-shaped bearing frames (314) and the inverted L-shaped guide rails on both sides below the fixed mobile unit (31) are buckled and rollingly connected via bearings (315); The third correction subassembly and the fourth correction subassembly have the same structure, and the structures of the third correction subassembly and the fourth correction subassembly include: a telescopic end of a second electric telescopic rod (41) and a second correction plate (42), wherein the telescopic end of the second electric telescopic rod (41) and the second correction plate (42) are connected.

3. The height detection device according to claim 1, characterized in that: The regulating assembly includes a first regulating subassembly, a second regulating subassembly and a driving subassembly, wherein: The first adjusting subassembly comprises: a first curved rod (51) and a second curved rod (52) hingedly connected via a first rotating joint; two free ends of the first adjusting subassembly respectively form a first four-bar mechanism with the upper back surface of the support frame (1) and the detection plate (2) via a rotating axis; The second adjusting subassembly comprises: a third auxiliary rod (53) and a fourth auxiliary rod (54) hingedly connected by a second rotating joint; two free ends of the second adjusting subassembly respectively form a second four-bar mechanism with four sides of equal length with the first adjusting subassembly through a rotating axis, the driving subassembly is arranged between the diagonal rotating nodes of the second four-bar mechanism, the driving subassembly drives the diagonal rotating nodes of the first adjusting subassembly and the second adjusting subassembly to perform telescopic movement with a limited stroke, and the inclination angle of the detection plate (2) is adjusted by the cooperation of the first adjusting subassembly and the second adjusting subassembly; The first four-bar mechanism comprises: a first curved bar (51), a second curved bar (52), a detection plate (2) and a support frame (1) which are connected in sequence by shaft rotation; wherein one end of the first curved bar (51) and one end of the second curved bar (52) are connected to each other via a first rotation joint, the other end of the first curved bar (51) and the support frame (1) are connected to each other via a rotation axis, and the other end of the second curved bar (52) and the detection plate (2) are connected to each other via a rotation axis; The second four-bar mechanism comprises: the third auxiliary rod (53), the fourth auxiliary rod (54), a partial curved rod of the second curved rod (52) and a partial curved rod of the first curved rod (51), which are connected in sequence by shaft rotation; wherein one end of the third auxiliary rod (53) and one end of the fourth auxiliary rod (54) are connected to each other through a second rotation joint, one end of the partial curved rod of the first curved rod (51) and one end of the partial curved rod of the second curved rod (52) are connected to each other through a first rotation joint, the other end of the third auxiliary rod (53) and the other end of the partial curved rod of the first curved rod (51) are connected to each other through a rotation shaft, and the other end of the fourth auxiliary rod (54) and the other end of the partial curved rod of the second curved rod (52) are connected to each other through a rotation shaft; One end of the driving subassembly is connected to the hinge shaft of the first rotating joint; the other end of the driving subassembly is connected to the hinge shaft of the second rotating joint; The driving subassembly comprises a spring (55) for maintaining tension and a cylinder (56), wherein the spring (55) is arranged outside the cylinder (56), and two ends of the cylinder (56) are respectively connected to the first rotating joint and the second rotating joint.

4. The height detection device according to claim 1, characterized in that: The measuring assembly comprises a connecting plate (22), a fixing plate (23), a mounting plate (25), a screw rod (61), a pressing plate (62), a transmission block (621), a second servo motor (63) and a laser rangefinder (64), wherein the pressing plate (62) and the laser rangefinder (64) are arranged on the front side of the detection plate (2), and the connecting plate (22), the fixing plate (23), the screw rod (61), the transmission block (621) and the second servo motor (63) are arranged on the back side of the detection plate (2); The laser rangefinder (64) is arranged below the mounting plate (25), and the mounting plate (25) is fixedly connected to the detection plate (2); The connecting plate (22) and the fixing plate (23) are both vertically fixedly connected to the detection plate (2); the screw rod (61) is relatively rotatably mounted on the connecting plate (22) and the fixing plate (23); the transmission block (621) passes through the detection plate (2) and is fixedly connected to the pressure plate (62); The second servo motor (63) is fixed on the fixed plate (23), and its power output end is connected to the screw rod (61).

5. The height detection device according to claim 1, characterized in that: Also includes: A foot support plate (21) is vertically fixed to the bottom of the front side of the detection plate (2), and two U-shaped heel fixers (211) are provided on the upper surface of the foot support plate (21); the opening angle of the two heel fixers (211) is 60 degrees.

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