A height detection device

Abstract

The present invention relates to the technical field of height measurement, and particularly relates to a height detection device. The method includes: guiding the tester to stand upright with the back of the body in contact with the vertical plane; using a binocular camera to collect the limb position information of the front of the tester, and judging whether the limb forms of each part of the front of the tester are mirror-symmetric along the vertical direction according to the limb position information; if the limb forms of each part of the front of the tester are not mirror-symmetric along the vertical direction, correcting the limb forms of each part of the front of the tester, and if the limb forms of each part of the front of the tester are mirror-symmetric along the vertical direction, controlling the vertical plane to rotate backward at an arbitrary angle of 10 degrees to 30 degrees; measuring the height of the tester in the inclined state of the vertical plane. Thus, problems such as how to improve the accuracy of height measurement are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of height measurement, and particularly relates 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, after a person stands, a sliding rod that slides up and down above the head is used to measure the person's height; for another example, technologies such as visual camera technology and laser irradiation are applied to the field of height detection to achieve non-contact measurement.

[0003] Due to the different forms of height detection and the influencing places in the market, the accuracy of height detection is completely different. The main reasons for inaccurate height detection are: the body types of different testers vary greatly, some are hunched, some have tilted shoulders, etc. Everyone has a different standing posture, which will directly affect the measurement accuracy.

[0004] The National Physical Fitness Monitoring Center of China has promulgated the "National Physical Fitness Measurement Standard (Revised in 2023)", which has specific requirements for height detection. Although this standard can promote the standardization of detection, it does not absolutely avoid detection deviations; the main reason is that when the tester stands, it is very difficult to correct the natural form of the human body to conform to the regulations of the standard. Everyone's body shape is different, and it is very difficult to ensure that the height detection of each person is very accurate. Summary of the Invention

[0005] The present invention provides a height detection device to solve problems such as how to improve the accuracy of height measurement.

[0006] In a first aspect embodiment of the present invention, a height detection method is provided, including the following steps: guiding the tester to stand upright and the back of the body to fit with the vertical plane; using a binocular camera to collect the limb position information of the front of the tester, and judging whether the limb forms of each part of the front of the tester are mirror-symmetrical along the vertical direction according to the limb position information; if the limb forms of each part of the front of the tester are not mirror-symmetrical along the vertical direction, then correcting the limb forms of each part of the front of the tester, and if the limb forms of each part of the front of the tester are mirror-symmetrical along the vertical direction, then controlling the vertical plane to rotate backward at an arbitrary angle of 10 degrees to 30 degrees; measuring the height of the tester in the tilted state of the vertical plane.

[0007] Optionally, correcting the limb forms of each part of the front of the tester includes: applying a force to the bent part of the tester; correcting the limb forms of each part through the force.

[0008] Optionally, before correcting the limb forms of each part of the front of the tester, it further includes: generating a voice prompt for each part of the limb form; using the voice prompt to guide the tester to adjust each part of the limb form.

[0009] Optionally, when measuring the height of the tester in a state where the vertical plane is inclined, it includes: controlling the pressing plate above the tester to move along the direction close to the tester's head; if it is detected that the actual resistance received by the pressing plate is greater than the preset resistance, it is determined that the pressing plate has compacted the tester's head, and controlling the laser rangefinder to measure the first distance between the laser rangefinder and the pressing plate; obtaining the second distance between the laser rangefinder and the sole plate under the tester's feet, and calculating the height of the tester according to the first distance, the second distance and the thickness of the pressing plate.

[0010] Optionally, the limb position information includes: the tip of the nose, the chin, the midpoint of the chest cavity, the pubic symphysis and the midpoint of the heel. Judging whether the limb forms of each part on 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 tip of the nose, the chin, the midpoint of the chest cavity, the pubic symphysis and the midpoint of the toes are on the mirror plane of mirror symmetry, it is determined that the limb forms of each part on the front of the tester are mirror-symmetrical along the vertical direction, otherwise it is determined that the limb forms of each part on the front of the tester are not mirror-symmetrical along the vertical direction.

[0011] An embodiment of 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 rotating shaft; a groove, the groove restricts the tester's head on the vertical plane of the detection plate, the back of the tester's head is embedded in the groove, compensates for the size of the back of the head through the groove, makes the tester's head top flush with the detection plate, and assists the tester to ensure a vertical state; a binocular camera, used to collect the limb position information of the tester's front; a correction component, used to correct the limb forms of each part on the front of the tester; an adjustment component, used to adjust the detection plate to rotate around the rotating shaft so that the detection plate rotates backward at any angle between 10 degrees and 30 degrees; a measurement component, used to measure the height of the tester in a state where the detection plate is inclined.

[0012] Optionally, the correction component includes first to fourth correction sub-components arranged on both sides of the central axis of the detection plate. Among them, 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 correction sub-component and the second correction sub-component have the same structure. The structures of the first correction sub-component and the second correction sub-component include: a moving unit, a first servo motor, a first gear, a second gear, a second gear rack, a bearing rack, a bearing, a first correction plate, a rack and a guide rail. Among them, the telescopic end of the first electric telescopic rod in the moving unit is connected to the first correction plate, and the power output end of the first servo motor is connected to the first gear; the first gear is meshed and connected to the rack through the second gear arranged on the second gear rack; the second gear rack is fixedly connected to the moving unit, and the second gear rack is fixedly connected to the moving unit. The L-shaped bearing racks and the inverted L-shaped guide rails on both sides below the fixed moving unit are connected by bearings in a snap-fit and rolling manner.

[0014] Optionally, the third correction sub-component and the fourth correction sub-component have the same structure. The structures of the third correction sub-component and the fourth correction sub-component include: the telescopic end of the second electric telescopic rod and the second correction plate. Among them, the telescopic end of the second electric telescopic rod is connected to the second correction plate.

[0015] Optionally, the adjustment component includes a first adjustment sub-component, a second adjustment sub-component and a driving sub-component. Among them, 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 are respectively connected to the support frame and the upper back surface of the detection plate through rotating shafts to form a first four-bar mechanism, and the two free ends of the second adjustment sub-component are respectively connected to the first adjustment sub-component through rotating shafts to form a second four-bar mechanism with equal side lengths. 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 movements with a limited stroke, and the tilt 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 rod, a second curved rod, a detection plate and a support frame sequentially connected through rotating shafts. Among them, one end of the first curved rod and one end of the second curved rod are connected to each other through a first rotating joint, the other end of the first curved rod and the support frame are connected to each other through a rotating shaft, and the other end of the second curved rod and the detection plate are connected to each other through a rotating shaft.

[0017] Optionally, the second four-bar mechanism includes: a third auxiliary rod, a fourth auxiliary rod, a partial curved rod of the second curved rod, and a partial curved rod of the first curved rod, which are sequentially connected in series through a rotating shaft; wherein, one end of the third auxiliary rod and one end of the fourth auxiliary rod are connected to each other through a second rotating 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 rotating joint, the other end of the third auxiliary rod and the other end of the partial curved rod of the first curved rod are connected to each other through a rotating shaft, and the other end of the fourth auxiliary rod and the other end of the partial curved rod of the second curved rod are connected to each other through a rotating shaft.

[0018] Optionally, one end of the driving sub-assembly is connected to the hinge shaft of the first rotating joint; the other end of the driving sub-assembly is connected to the hinge shaft of the second rotating joint.

[0019] Optionally, the driving sub-assembly includes a spring and a cylinder that maintain tension, wherein the cylinder is sleeved with the spring, and both ends of the cylinder are connected to the first rotating joint and the second rotating joint respectively.

[0020] Optionally, the measuring assembly includes a connecting plate, a fixing plate, a mounting plate, a screw, a pressing plate, a transmission block, a second servo motor, and a laser rangefinder. The pressing plate and the laser rangefinder are arranged on the front surface of the detection plate, and the connecting plate, the fixing plate, the screw, the transmission block, and the second servo motor are arranged on the back surface of the detection plate; the laser rangefinder is arranged below the mounting plate, and the mounting plate is fixedly connected to the detection plate; both the connecting plate and the fixing plate are fixedly connected to the detection plate perpendicularly, the screw is rotatably mounted between the connecting plate and the fixing plate; the transmission block passes through the detection plate and is fixedly connected to the pressing plate; the second servo motor is fixed on the fixing plate, and its power output end is connected to the screw.

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

[0022] Therefore, the present invention has the following beneficial effects:

[0023] In the embodiment of the present invention, when measuring the height of a tester, the tester is first guided to stand upright with the back of the body closely attached to the vertical plane. Since the tester's close attachment can make the posture during the test more standard, the measurement error is reduced by guiding the back of the tester's body to actively attach to the detection board. Secondly, the binocular camera is used to collect the limb position information to determine whether the limb shapes of each part of the tester are mirror-symmetrical. Since the mirror symmetry of the limb shapes of each part indicates that the tester's posture is standard, the binocular camera can accurately determine the tester's posture. 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 height of the tester is measured in the tilted state of the vertical plane. Since there is no support point for the tester 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. Thus, the embodiment of the present invention can enable each tester to measure height in a relatively standard posture, avoid the influence of the standing postures of different people on 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 height measurement methods, including the detection methods of standing upright or lying face up. Since the human foot has a supporting effect on the human body, this supporting force can make the tester involuntarily tilt the body at any angle. This randomness of tilting brings unpredictable results to height measurement, resulting in non-standard and inaccurate measurements.

[0025] By making the tester lean backward at a certain angle in the back direction, the present invention can relieve the force on the tester's feet, remove the supporting force of the human foot on the human body, and make the tester's body have to accept the standard test rules, enabling the test results to be kept accurate to the greatest extent.

[0026] The additional aspects and advantages of the present invention will be partly given in the following description, partly become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above-mentioned and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the following description of the embodiments in conjunction with the drawings, where:

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

[0029] Figure 2 is a schematic diagram of different positions of the tip of the tester's nose, chin, midpoint of the chest cavity, pubic symphysis, and midpoint of the heel when the human body is upright and bent sideways according to the embodiment of the present invention;

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

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

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

[0033] Figure 6 Structural diagram of a height detection device according to an embodiment of the present invention. Detailed implementation manners

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

[0035] Currently, the inaccuracy of height detection generally has the following situations: 1. Due to the influence of the hair thickness of the tester, it is determined that the detection method in contact with the hair will be more accurate than the detection method without contact with the hair; 2. Due to the great differences in the body shapes of different testers, some people bend their waists, some have tilted shoulders, etc., and 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 has promulgated the "National Physical Fitness Test Standard (Revised in 2023)", which makes specific requirements for height detection. Although this standard can promote the standardization of detection, it does not absolutely avoid detection deviations; the main reason is that when the tester stands, it is very difficult to correct the natural form of the human body to meet the standard regulations. The body shapes of each person are different, and it is very difficult to ensure that the height detection of each person is very accurate.

[0037] In order to ensure that each tester meets the requirements of the measurement standard, the embodiments of the present invention propose a height detection method and device to solve problems such as how to improve the accuracy of height measurement. The height detection method and device of the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0038] Specifically, Figure 1 Flow chart of a height detection method provided by an embodiment of the present invention.

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

[0040] In step S101, the tester is guided to stand upright and the back of the body is attached to the vertical plane.

[0041] It can be understood that the fitting in the embodiments of the present invention may refer to a close fit, that is, when the tester is tested, as small a gap as possible, or even no gap, is left between the back of the body and the vertical plane. Thus, in the embodiments of the present invention, by guiding the tester to stand upright, the height detected in the upright state is a more accurate result. At the same time, by guiding the back of the body to fit with the vertical plane and using the vertical plane to assist the tester to stand upright, through the two actions of guiding the tester to stand upright and the back of the body to fit with the vertical plane, the tester actively adjusts the standing posture to meet the measurement standards of the test.

[0042] In the embodiments of the present invention, various methods can be adopted to guide the tester to stand upright and the back of the body to fit with the vertical plane. For example, relevant guiding voices can be played through a voice device, and relevant guiding texts can be displayed through a display screen. The content of the back of the body fitting with the vertical plane and the relevant guiding texts can be, for example, "Please stand upright and the back of the body fits with the vertical plane"; for another example, guiding personnel can also be arranged to guide the tester. Those skilled in the art can specifically select any one or more of the above methods according to the situation during height measurement, without specific limitations.

[0043] It should be noted that during the test guiding process in the embodiments of the present invention, the tester can also be guided to separate the toes by 60 degrees. By guiding the separation of the toes, the tester can better maintain the upright posture.

[0044] In the embodiments of the present invention, the back includes the heel, the sacral part, and two scapulas. In specific applications, for example: the embodiments of the present invention have detection requirements for height detection. The tester is guided to stand barefoot on the bottom plate of the height tester with the back facing the column, the torso is naturally straight, the head is upright, the eyes are looking straight ahead, and the upper edge of the tragus is at the same horizontal level as the lowest point of the lower edge of the orbit; the upper limbs are naturally hanging down, the two legs are straight, the two heels are together, the toes are separated by about 60°, and the heel, the sacral part, and the two scapulas are in contact with the column, standing in a "three-point straight line" posture.

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

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

[0047] As Figure 3 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 rotating shaft; the groove 24 restricts the head of the tester to the vertical plane of the detection board. The back of the tester's head is embedded in the groove 24 to compensate for the size of the back of the head, making the top of the tester's head flush with the detection board and assisting 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 postures of various parts of the tester's front; the adjustment component is used to adjust the detection board 2 to tilt backward at any angle from 10 degrees to 30 degrees around the rotating shaft; the measurement component is used to measure the height of the tester in the tilted state of the detection board 2.

[0049] It can be understood that in the embodiment of the present invention, the limb position information collected by the binocular camera can be used to determine whether the limb postures of various parts of the tester are mirror-symmetrical. Since the tester's posture is standard when the limb postures of various parts are mirror-symmetrical, the posture of the tester 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 height of the tester is measured in the tilted state of the vertical plane. Since there is no support point for the tester 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 remains vertical and restricts the head to the vertical plane. The functions of the groove include: First, compensating for the size of the back of the head to make the top of the tester's head flush with the detection board; Second, positioning the head to assist the human body to maintain a vertical state.

[0051] In the embodiment of the present invention, the correction component includes the first to fourth correction sub-components arranged on both sides of the central axis of the detection board 2. Among them, 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 in the embodiment of the present invention, a force can be applied to the protruding and bent parts of the tester's limbs to ensure that the parts of the tester's front body shape are mirror-symmetrical. For example, a force can be applied to the legs and shoulders, the legs are fixed by the force, and different forces are applied through the shoulders so that the shoulders are mirror-symmetrical under different forces.

[0053] Specifically, as Figure 4As shown, the structures of the first correction sub-component and the second correction sub-component are the same. The structures of the first correction sub-component and the second correction sub-component include: a moving unit 31, a first servo motor 311, a first gear 312, a second gear 313, a second gear rack 3131, a bearing rack 314, a bearing 315, a first correction plate 32, a rack 33, and a guide rail 34. Among them, 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 and connected to the rack 33 through the second gear 313 provided on the second gear rack 3131; the second gear rack 3131 is fixedly connected to the moving unit 31, and the second gear rack 3131 is fixedly connected to the moving unit 31. The L-shaped bearing racks 314 on both sides below the fixed moving unit 31 and the inverted L-shaped guide rail are buckled and roll-connected through the bearing 315. As Figure 4 shown, the bearing 315 is inclined. The advantage of the inclined setting is that the first electric telescopic rod in the moving unit 31 can simultaneously bear the acting forces from two directions, ensuring balanced force.

[0054] As Figure 3 shown, the structures of the third correction sub-component and the fourth correction sub-component are the same. The structures of the third correction sub-component and the fourth correction sub-component include: the telescopic end of the second electric telescopic rod 41 and the second correction plate 42. Among them, the telescopic end of the second electric telescopic rod 41 is connected to the second correction plate 42.

[0055] In the embodiment of the present invention, the adjustment component includes a first adjustment sub-component, a second adjustment sub-component, and a driving sub-component. Among them, the two free ends of the first adjustment sub-component are respectively formed into a first four-bar mechanism with the upper back surfaces of the support frame 1 and the detection plate 2 through a rotating shaft. The two free ends of the second adjustment sub-component are respectively formed into a second four-bar mechanism with equal side lengths with the first adjustment sub-component through a rotating shaft. 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 movements 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 adjustment sub-component, the second adjustment sub-component, and the driving sub-component, and measure the height of the tester in the inclined state of the vertical plane. Since there is no support point for the tester 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 standard.

[0057] Specifically, as Figure 3As shown in the figure, the first regulating sub-component includes a first curved rod 51 and a second curved rod 52 hinged by a first rotary joint. The first four-bar mechanism includes, connected in sequence by a rotating shaft: the first curved rod 51, the second curved rod 52, the detection plate 2, and the support frame 1. One end of the first curved rod 51 is interconnected with one end of the second curved rod 52 through the first rotary joint. The other end of the first curved rod 51 is interconnected with the support frame 1 through a rotating shaft. The other end of the second curved rod 52 is interconnected with the detection plate 2 through a rotating shaft.

[0058] As Figure 3 shown in the figure, the second regulating sub-component includes a first auxiliary rod 53 and a second auxiliary rod 54 hinged by a second rotary joint. One end of the driving sub-component is connected to the hinge shaft of the first rotary joint; the other end of the driving sub-component is connected to the hinge shaft of the second rotary joint.

[0059] As Figure 3 shown in the figure, the driving sub-component includes a spring 55 and a cylinder 56 that maintains tension. The spring 55 is sleeved outside the cylinder 56. Both ends of the cylinder 56 are connected to the first rotary joint and the second rotary joint respectively.

[0060] The spring always maintains a tension state, that is, there is always tension. When there is no force on the cylinder, 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 and squeeze the spring to make the detection plate inclined.

[0061] The first four-bar mechanism includes, connected in sequence by a rotating shaft: the first curved rod 51, the second curved rod 52, the detection plate 2, and the support frame 1. One end of the first curved rod 51 is interconnected with one end of the second curved rod 52 through the first rotary joint. The other end of the first curved rod 51 is interconnected with the support frame 1 through a rotating shaft. The other end of the second curved rod 52 is interconnected with the detection plate 2 through a rotating shaft.

[0062] The second four-bar mechanism includes, connected in sequence by a rotating shaft: 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. One end of the third auxiliary rod 53 is interconnected with one end of the fourth auxiliary rod 54 through the second rotary joint. One end of the partial curved rod of the first curved rod 51 is interconnected with one end of the partial curved rod of the second curved rod 52 through the first rotary joint. The other end of the third auxiliary rod 53 is interconnected with the other end of the partial curved rod of the first curved rod 51 through a rotating shaft. The other end of the fourth auxiliary rod 54 is interconnected with the other end of the partial curved rod of the second curved rod 52 through a rotating shaft.

[0063] In the embodiment of the present invention, as Figure 5As shown, the measuring assembly includes a connecting plate 22, a fixing plate 23, a mounting plate 25, a screw 61, a pressing plate 62, a transmission block 621, a second servo motor 63, and a laser rangefinder 64. Among them, 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 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; both the connecting plate 22 and the fixing plate 23 are vertically and 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 pressing 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 set the working torque. 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 at the top, the torque suddenly increases and it stops working.

[0065] In the embodiment of the present invention, as Figure 3 and Figure 6 shown, the height detection device further includes: a foot support plate 21 is vertically and fixedly connected to the bottom of the front side of the detection plate 2, and two U-shaped heel fixators 211 are arranged on the upper surface of the foot support plate 21; the opening angle between the two heel fixators 211 is 60 degrees.

[0066] It should be noted that the foregoing explanation of the embodiment of the height detection method also applies to the height detection device of this embodiment, and will not be elaborated here.

[0067] According to the height detection device proposed in the embodiment of the present invention, it is determined whether the limb shapes of the tester in each part maintain mirror symmetry through the limb position information collected by the binocular camera. Since when the limb shapes in each part 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 height of the tester is measured in the tilted state of the vertical plane. Since there is no support point for the tester 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. Thus, the embodiment of the present invention can enable each tester to measure height in a relatively standard posture, avoid the influence of the standing postures of different people on height measurement, and effectively improve the accuracy of height measurement.

[0068] The present invention further includes the following steps, and through the following steps, the structure in the present invention can be further generalized or explained in detail.

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

[0070] Among them, the limb position information may include: the tip of the nose, the chin, the midpoint of the chest cavity, the pubic symphysis, and the midpoint of the heels. A binocular camera is a device that uses the principle of stereovision to obtain the 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 (referred to as parallax) of the corresponding points in the images.

[0071] It can be understood that in the embodiments of the present invention, a computer can be used to process the information collected by the binocular camera, and by analyzing and judging the limb position information, it is determined whether the limb postures of various parts of the tester's front are mirror-symmetrical.

[0072] In the embodiments of the present invention, as Figure 2 shown, determining whether the limb postures of various parts of the tester's front are mirror-symmetrical along the vertical direction based on the limb position information includes: if it is detected that the tip of the nose, the chin, the midpoint of the chest cavity, the pubic symphysis, and the midpoint of the toes are on the mirror plane of mirror symmetry, it is determined that the limb postures of various parts of the tester's front are mirror-symmetrical along the vertical direction; otherwise, it is determined that the limb postures of various parts of the tester's front are not mirror-symmetrical along the vertical direction.

[0073] It can be understood that when the tester stands upright, the limb postures of various parts of the tester's front are mirror-symmetrical along the vertical direction. Therefore, in the embodiments of the present invention, by judging whether the tip of the nose, the chin, the midpoint of the chest cavity, the pubic symphysis, and the midpoint of the toes are on the mirror plane of mirror symmetry, it is determined whether the tester maintains an upright state. As Figure 2 shown, Figure 2 The human model on the left exemplifies the case of maintaining mirror symmetry, Figure 2 and the human model on the right exemplifies the case of not maintaining mirror symmetry.

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

[0075] Build a binocular vision system, and use two cameras to capture the front images of the tester 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 calibration method can be used, or more efficient calibration techniques such as direct linear transformation and perspective transformation short matrix method can be explored.

[0077] 2. Image acquisition and preprocessing:

[0078] Collect the limb images of the tester from the front, ensuring that the images are clear and the feature points are obvious. Preprocess the images, including grayscale conversion, filtering and denoising, etc., 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 the key points in the images. For binocular images, find the corresponding feature point pairs through the feature point matching algorithm.

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

[0082] Use the stereo matching algorithm (such as SGBM) to calculate the disparity map, and then obtain the depth information. According to the disparity map and the camera parameters, reconstruct the 3D limb model of the tester.

[0083] 5. Symmetry analysis:

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

[0087] 7. System optimization:

[0088] According to the experimental results, adjust the camera parameters, improve the feature point extraction and matching algorithms, and optimize the symmetry analysis method to improve the accuracy and robustness of the system.

[0089] In step S103, if the limb shapes of each part of the tester from the front do not maintain mirror symmetry along the vertical direction, correct the limb shapes of each part of the tester from the front. If the limb shapes of each part of the tester from the front maintain mirror symmetry along the vertical direction, control the vertical plane to tilt and rotate at an arbitrary angle from 10 degrees to 30 degrees backward. Preferably, the vertical plane tilts and rotates 20 degrees optimally.

[0090] It can be understood that in the embodiments of the present invention, when the tester does not maintain a standard upright state, or rather, when the tester's upright posture is not adjusted to meet the standard conditions within a period of time, the embodiments of the present invention can correct the limb postures of various parts on the front of the tester, and when the tester is in an upright posture, control the inclination of the vertical plane, and measure the height of the tester in the inclined state of the vertical plane. Since there is no support point for the tester 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 standard.

[0091] If the front morphological state of the tester's body part maintains a linear symmetry state, the plane carries the entire body of the tester with the lower part of the heel as the axis and rotates at an arbitrary angle of 10 degrees to 30 degrees in the direction of the tester's back. The effect of reaching the above angle is: making the lower limbs of the tester's body unable to exert force and unloading the body; thus, the tester cannot actively control the body to form a bend, which is convenient for the device to adjust the bent body.

[0092] In the embodiments of the present invention, correcting the limb postures of various parts on the front of the tester includes: applying a force to the bent parts of the tester; correcting the limb postures of various parts through the force.

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

[0094] It can be understood that the embodiments of the present invention can apply a force to the prominently bent parts of the tester's limbs to ensure that all parts of the front morphological state of the tester's body maintain mirror symmetry. For example, a force can be applied to the legs and shoulders, fixing the legs through the force, and applying different forces through the shoulders so that the shoulders maintain mirror symmetry under different applied forces.

[0095] In the embodiments of the present invention, before correcting the limb postures of various parts on the front of the tester, it further includes: generating a voice prompt for the limb postures of various parts; using the voice prompt to guide the tester to adjust the limb postures of various parts.

[0096] It can be understood that before correcting the limb postures of various parts on the front of the tester by applying a force, the embodiments of the present invention can guide the tester to adjust the limb postures of various parts through a voice prompt, guiding the tester to actively adjust through the voice prompt, and giving the user a better height measurement experience.

[0097] It should be noted that if it is detected that the limb postures of various parts on the front of the tester's body still do not maintain mirror symmetry between voice prompts, then correct the limb postures of various parts on the front of the tester by applying a force. At the same time, in order to give the user a better experience, before applying the force, the user can be informed in the form of voice, etc. that the correction of the limb postures of various parts will be carried out soon.

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

[0099] It can be understood that since there is no support point for the tester in the state where the vertical plane is inclined, the body will naturally be in a tense state, making the tester's body more in line with the test standard. Therefore, measuring the height of the tester in the state where the vertical plane is inclined in the present invention can effectively improve the accuracy of height measurement.

[0100] Such as Figures 3 - 6 As shown, in the embodiment of the present invention, measuring the height of the tester in a state where the vertical plane is inclined includes: controlling the pressing plate above the tester to move along the direction close to the tester's head; if it is detected that the actual resistance received by the pressing plate is greater than the preset resistance, it is determined that the pressing plate has compacted the tester's head, and controlling the laser rangefinder to measure the first distance between the laser rangefinder and the pressing plate; obtaining the second distance between the laser rangefinder and the sole plate under the tester's feet, and calculating the height of the tester according to the first distance, the second distance and the thickness of the pressing plate.

[0101] Among them, the preset resistance refers to the force that can compact the tester's hair and will not cause physical harm to the tester at the same time. The preset resistance can be calibrated in advance. For example, it can be comprehensively calibrated according to factors such as the age, gender, and body shape of the tester, and the preset resistance suitable for the tester is determined according to the calibrated corresponding relationship table.

[0102] It can be understood that after the embodiment of the present invention compacts the tester's hair with a pressing plate perpendicular to the plane, and directly measures the distance from the heel to the pressing plate, which is the height of the tester, thereby avoiding the influence of the hair thickness of the tester on 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 fixedly arranged, the second distance can be calibrated and determined before height detection. Of course, it can also be directly detected by the laser rangefinder when the tester is not standing on the sole plate to obtain the second distance.

[0104] Since the pressing plate can move, after the tester's hair is compacted with a pressing plate perpendicular to the plane, the first distance is directly detected by the laser rangefinder, and 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 according to the first distance, the second distance and the thickness of the pressing plate.

[0105] The height detection method will be elaborated through an example below, specifically as follows:

[0106] a. Let the tester stand upright and the back of the body be closely attached to 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. The computer analyzes and judges the collected limb position information: whether the limb postures of all parts of the tester's body front maintain mirror symmetry;

[0108] c. If there is no linear symmetry, the computer uses the voice system to prompt the tester of the limb parts that need to be corrected;

[0109] d. If the front posture of the tester's body part maintains a linear symmetry state; the plane carries the entire body of the tester and rotates at any angle between 10 degrees and 30 degrees in the direction of the tester's back with the area below the heel as the axis;

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

[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 closely fit the back of the body to the vertical plane. Since the tester can be closely fitted to make the posture more standard during the test, the measurement error is reduced by guiding the tester to actively fit; secondly, determine whether the limb postures of all parts of the tester maintain mirror symmetry through the limb position information collected by the binocular camera. Since the limb postures of all parts maintain mirror symmetry, it means that the tester's posture is standard, so 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, control the vertical plane to tilt, and measure the height of the tester in the tilted state of the vertical plane. Since there is no support point for the tester 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. Thus, the embodiment of the present invention can enable each tester to measure height in a relatively standard posture, avoid the influence of the standing postures of different people on height measurement, and effectively improve the accuracy of height measurement.

[0112] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection 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 can be combined in a suitable manner in any one or N embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

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

[0114] Any process or method description shown in a flowchart or described otherwise herein can be understood to represent a module, segment, or portion of code including one or N executable instructions for implementing a customized logical function or process. And the scope of the preferred embodiments of the present invention includes additional implementations where functions may be executed in a substantially simultaneous manner or in an order opposite to that shown or discussed, according to the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention pertain.

[0115] It should be understood that various parts of the present invention can be implemented by hardware, software, firmware, or a combination thereof. In the above 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 in hardware, as in another embodiment, any one or a combination of the following well-known technologies in the art can be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application specific integrated circuits having appropriate combinational logic gate circuits, programmable gate arrays, field programmable gate arrays, etc.

[0116] Those of ordinary skill in the art of the present technology can understand that all or part of the steps carried by the methods for implementing the above embodiments can be completed by instructing relevant hardware through a program. The above program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiments.

[0117] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A height detection device, characterized in that, Comprising: Support frame (1); Detection plate (2), the bottom of the detection plate (2) is connected to the bottom of the support frame (1) by a rotating shaft; Groove (24), the groove (24) restricts 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 (24), compensates for the size of the back of the head through the groove (24), makes the top of the tester's head flush with the detection plate, and assists the tester to ensure a vertical state; The binocular camera (11) is installed on the support frame (1) for collecting the limb position information of the front of the tester; and judging whether the limb forms of each part of the tester's body are mirror-symmetrical on the front; Correction component, used to correct the limb forms of each part of the tester on the front; the correction component includes the first to fourth correction sub-components arranged on both sides of the central axis of the detection plate (2); 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 sub-component and the second correction sub-component have the same structure, and the structure of the first correction sub-component and the second correction sub-component includes: moving unit (31), first servo motor (311), first gear (312), second gear (313), second gear rack (3131), bearing rack (314), bearing (315), first correction plate (32), rack (33) and guide rail (34); Adjustment component, used to adjust the detection plate (2) to tilt backward at an arbitrary angle of 10 degrees to 30 degrees around the rotating shaft; the adjustment component includes a first adjustment sub-component, a second adjustment sub-component and a driving sub-component; The first adjustment sub-component includes: a first curved rod (51) and a second curved rod (52) hinged by a first rotating joint; the two free ends of the first adjustment sub-component respectively form a first four-bar mechanism with the upper back of the support frame (1) and the detection plate (2) through a rotating shaft; The second adjustment sub-component includes: a third auxiliary rod (53) and a fourth auxiliary rod (54) hinged by a second rotating joint; the two free ends of the second adjustment sub-component respectively form a second four-bar mechanism with equal side lengths with the first adjustment sub-component through a rotating shaft; The driving sub-component includes a spring (55) that maintains tension and a cylinder (56), the cylinder (56) is sleeved with the spring (55), and the two ends of the cylinder (56) are respectively connected to the first rotating joint and the second rotating joint; Measurement component, used to measure the height of the tester in the tilted state of the detection plate (2); the measurement component includes a connecting plate (22), a fixing plate (23), a mounting plate (25), a screw (61), a pressing plate (62), a transmission block (621), a second servo motor (63) and a laser rangefinder (64).

2. The height detection device according to claim 1, 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 and connected to the rack (33) through the second gear (313) arranged on the second gear rack (3131); the second gear rack (3131) is fixedly connected to the moving unit (31), and the L-shaped bearing brackets (314) and the inverted L-shaped guide rails on both sides below the moving unit (31) are snap-connected and roll-connected through bearings (315); The third correction sub-assembly and the fourth correction sub-assembly have the same structure. The structure of the third correction sub-assembly and the fourth correction sub-assembly includes: the telescopic end of the second electric telescopic rod (41) and the second correction plate (42), wherein the telescopic end of the second electric telescopic rod (41) is connected to the second correction plate (42).

3. The height detection device according to claim 1, wherein, The driving sub-assembly is arranged between the diagonal rotation nodes of the second four-bar mechanism. The driving sub-assembly drives the diagonal rotation nodes of the first adjustment sub-assembly and the second adjustment sub-assembly to perform telescopic movements with limited strokes, and adjusts the tilt angle of the detection plate (2) through the cooperation of the first adjustment sub-assembly and the second adjustment sub-assembly; 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) sequentially connected in sequence through a rotating shaft; wherein, one end of the first curved rod (51) is mutually connected to one end of the second curved rod (52) through a first rotating joint, the other end of the first curved rod (51) is mutually connected to the support frame (1) through a rotating shaft, and the other end of the second curved rod (52) is mutually connected to the detection plate (2) through a rotating shaft; The second four-bar mechanism includes: 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) sequentially connected in sequence through a rotating shaft; wherein, one end of the third auxiliary rod (53) is mutually connected to one end of the fourth auxiliary rod (54) through a second rotating joint, one end of the partial curved rod of the first curved rod (51) is mutually connected to one end of the partial curved rod of the second curved rod (52) through a first rotating joint, the other end of the third auxiliary rod (53) is mutually connected to the other end of the partial curved rod of the first curved rod (51) through a rotating shaft, and the other end of the fourth auxiliary rod (54) is mutually connected to the other end of the partial curved rod of the second curved rod (52) through a rotating shaft; One end of the driving sub-assembly is connected to the hinge shaft of the first rotating joint; the other end of the driving sub-assembly is connected to the hinge shaft of the second rotating joint.

4. The height detection device according to claim 1, wherein The pressing plate (62) and the laser rangefinder (64) are arranged on the front surface 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 surface 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); Both the connecting plate (22) and the fixing plate (23) are perpendicularly and fixedly connected to the detection plate (2), and 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 pressing plate (62); The second servo motor (63) is fixed on the fixing 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, It further includes: At the bottom of the front surface of the detection plate (2), a foot support plate (21) is perpendicularly fixed, and two U-shaped heel fixators (211) are arranged on the upper surface of the foot support plate (21); the opening angle between the two heel fixators (211) is 60 degrees.

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