A separate baby height measuring device

Abstract

The present invention discloses a separate baby height measuring device, comprising: a placement table, a barcode group, a code scanning device and a controller; a head plate is arranged at one end of the placement table, a foot pedal is arranged on the placement table, the foot pedal is movably connected with the placement table, the code scanning device and the controller are both arranged on the foot pedal, the barcode group is arranged on the top surface of the placement table, a restraint device is arranged on the placement table, and the code scanning device is electrically connected with the controller. When measuring the height of a baby, first place the baby on the placement table, abut the head against the head plate, restrain and straighten the legs through the restraint device, and calculate the height of the baby. The device can accurately measure the height of the baby, and can prevent the baby from moving around during measurement, resulting in inaccurate measurement, and more accurate values ​​can be obtained when measuring babies with slow development.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and more particularly to a separate baby height measuring device. Background Art

[0002] At present, medical science mostly uses height values ​​and growth cycles to calculate the development of infants. For children with autonomous consciousness, measurement is relatively convenient and can effectively cooperate with medical staff to measure. However, for infants who do not yet have self-awareness, measuring height requires specific instruments. When measuring infants, they are measured when they are asleep, or they are manually restrained. Both of the above methods have defects. When sleeping, infants are in a curled-up state and their height cannot be accurately measured. Manual restraint cannot completely fix the infant and ensure that its legs are straight. All of the above will lead to measurement errors. For normal infants, the above errors can be ignored, but for infants with slow development, the above errors cannot be ignored. Therefore, it is necessary to propose a separate infant height measurement device to at least partially solve the problems existing in the prior art. Summary of the invention

[0003] A series of simplified concepts are introduced in the Summary of the Invention, which will be further described in detail in the Detailed Description of the Invention. The Summary of the Invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0004] In order to at least partially solve the above-mentioned problems, the present invention provides a detachable infant height measuring device, comprising: a placement table, a barcode group, a code scanning device and a controller; a head plate is provided at one end of the placement table, a foot pedal is provided on the placement table, the foot pedal is movably connected to the placement table, the code scanning device and the controller are both provided on the foot pedal, the barcode group is provided on the top surface of the placement table, a restraint device is provided on the placement table, and the code scanning device is electrically connected to the controller.

[0005] Preferably, a slide rail is provided on the side wall of the placement platform, and both ends of the foot pedal are connected to the slide rail via sliding blocks.

[0006] Preferably, a receiving groove is provided on the top surface of the placement platform, the receiving groove is arranged in a normal direction to the foot pedal, the restraint device is arranged in the receiving groove, and the barcode groups are respectively located on both sides of the receiving groove.

[0007] Preferably, the barcode group includes an incremental barcode and an equidistant barcode; the incremental barcode and the equidistant barcode are arranged in parallel and are respectively located on both sides of the accommodation groove, and the barcode scanning device can scan the incremental barcode and the equidistant barcode.

[0008] Preferably, the distance between the stripes at both ends of the incremental barcode is the total length of the measuring device, and the spacing between adjacent stripes of the incremental barcode increases in geometric progression.

[0009] Preferably, the stripe width of the equidistant barcode is the same as the distance between two adjacent stripes.

[0010] Preferably, a transmission module is provided on the foot pedal, and the transmission module is electrically connected to the controller.

[0011] Preferably, a slide groove is provided on the slide rail, a limit mark device is provided on the foot pedal, two ends of the limit mark device pass through the slide groove and are connected to the slider, and the limit mark device is electrically connected to the controller.

[0012] Preferably, the limit mark device includes a shell, a connecting rod, a limit block, an elastic member, a connecting rod and a position detection device; both ends of the connecting rod are connected to the limit block through the elastic member, the connecting rod is arranged on the limit block and passes through the slide groove to be connected to the slider shaft, a clamping plate is arranged on one side of the limit block, the clamping plate is located inside the shell, the limit blocks are arranged at both ends of the shell, and the limit blocks are movably connected to the shell, a plurality of movable grooves are arranged on the connecting rod, a mounting rod is arranged in the shell, the mounting rod passes through the movable groove, a plurality of position detection devices are arranged on the outer wall of the shell, the position detection device is annularly wrapped around the shell, the cross-section of the shell is a Lello triangle, and the position detection device is electrically connected to the controller.

[0013] Preferably, the restraint device comprises two fixing clamps, two limiting clamps and a wrist restraint; the two fixing clamps are arranged in the accommodation groove, and the two fixing clamps are symmetrically arranged, the limiting clamp is arranged in the fixing clamp and is movably connected with the fixing clamp, and the two limiting clamps are both provided with a movable rod, one end of the movable rod is connected to the limiting clamp shaft, and the other end of the movable rod is connected to the wrist restraint shaft;

[0014] The fixing fixture is a U-shaped fixture, and the inner wall of the fixing fixture is provided with a plurality of latch teeth;

[0015] The limit clamp comprises an insertion end, a clamping end and an abutting end, the insertion end is inserted into the U-shaped opening of the fixing clamp, the clamping end is provided with a plurality of clamping teeth adapted to the inner wall of the fixing clamp, the clamping end is clamped with the inner wall of the fixing clamp through the clamping teeth, and the abutting end is provided with an arc surface;

[0016] The wrist restraint comprises two clamping members, the movable rod is connected to the clamping member axis, the two clamping members are connected by a connecting belt, and the clamping member is arc-shaped.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] 1. The detachable infant height measuring device described in the present invention, when measuring the height of an infant, firstly, places the infant on the placement table, places the head against the head plate, restrains and straightens the legs through the restraint device, then moves the foot pedal to the sole of the infant's foot, starts the code scanning device, scans the barcode group under the foot pedal, then performs waveform conversion through the controller, and calculates the height of the infant. The device can accurately measure the height of the infant, and can prevent the infant from moving around during measurement, resulting in inaccurate measurement. More accurate values ​​can be obtained when measuring infants with slow development.

[0019] The separate infant height measuring device of the present invention, other advantages, objectives and features of the present invention will be partially reflected through the following description, and will also be partially understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a schematic structural diagram of the separate infant height measuring device of the present invention.

[0022] Figure 2 It is a schematic diagram of the stripe distribution pattern of the barcode group in the separate infant height measuring device of the present invention.

[0023] Figure 3 This is a waveform diagram generated when two barcode scanning devices in the separate baby height measuring device of the present invention scan a barcode group.

[0024] Figure 4 The exploded view of the limit mark device in the separate infant height measuring device of the present invention.

[0025] Figure 5 for Figure 4 Enlarged view of the middle limit block.

[0026] Figure 6 It is a schematic diagram of the structure of the combined use of the restraint device in the separate infant height measuring device of the present invention.

[0027] Figure 7 for Figure 6 Schematic diagram of the structure after decomposition.

[0028] Figure 8 It is a cross-sectional view of the fixing fixture and the limiting fixture.

[0029] In the figure: 1 placement table, 2 head plate, 3 foot pedal, 4 slider, 5 accommodation slot, 6 barcode group, 61 incremental barcode, 62 equidistant barcode, 7 scanning device, 8 controller, 9 transmission module, 10 constraint device, 101 fixing fixture, 102 limit fixture, 103 wrist constraint, 104 movable rod, 105 clamping part, 106 connecting belt, 11 slide groove, 12 limit marking device, 121 shell, 122 connecting rod, 123 limit block, 124 elastic part, 125 connecting rod, 126 position detection device. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0031] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0032] like Figure 1-Figure 8 As shown, the present invention provides a detachable baby height measuring device, comprising: a placement table 1, a barcode group 6, a code scanning device 7 and a controller 8; a head plate 2 is provided at one end of the placement table 1, a foot pedal 3 is provided on the placement table 1, the foot pedal 3 is movably connected to the placement table 1, the code scanning device 7 and the controller 8 are both provided on the foot pedal 3, the barcode group 6 is provided on the top surface of the placement table 1, a restraint device 10 is provided on the placement table 1, and the code scanning device 7 is electrically connected to the controller 8.

[0033] The working principle and beneficial effects of the above technical solution: through the design of the above structure, when measuring the height of an infant, first place the infant on the placement table 1, and place the head against the head plate 2, restrain and straighten the legs through the restraint device 10, and then move the foot pedal 3 to the sole of the infant's feet, start the code scanning device 7, the code scanning device 7 will scan the barcode group 6 under the foot pedal 3, and then perform waveform conversion through the controller 8, and calculate the height of the infant. The device can accurately measure the height of the infant, and can prevent the infant from moving around during measurement, resulting in inaccurate measurement, and more accurate values ​​can be obtained when measuring infants with slow development.

[0034] In one embodiment, the side wall of the placement platform 1 is provided with a slide rail, and the two ends of the foot pedal 3 are connected to the slide rail through a slider 4. The top surface of the placement platform 1 is provided with a housing groove 5, and the housing groove 5 is arranged in a normal direction to the foot pedal 3. The constraint device 10 is arranged in the housing groove 5, and the barcode group 6 is respectively located on both sides of the housing groove 5. The barcode group 6 includes an incremental barcode 61 and an equidistant barcode 62; the incremental barcode 61 and the equidistant barcode 62 are arranged in parallel and are respectively located on both sides of the housing groove 5, and the code scanning device 7 can scan the incremental barcode 61 and the equidistant barcode 62. The distance between the stripes of the incremental barcode 61 at both ends is the total length of the measuring device, and the spacing between adjacent stripes of the incremental barcode 61 increases in geometric progression. The stripe width of the equidistant barcode 62 is the same as the spacing between two adjacent stripes. A transmission module 9 is provided on the foot pedal 3, and the transmission module 9 is electrically connected to the controller 8. The slide rail is provided with a slide groove 11, the foot pedal 3 is provided with a limit mark device 12, both ends of the limit mark device 12 pass through the slide groove 11 and are connected to the slider 4, and the limit mark device 12 is electrically connected to the controller (8).

[0035] The working principle and beneficial effects of the above technical solution: Through the design of the above structure, the head plate 2 is made of silicone material, which can reduce the pressure on the baby's head, and the foot pedal 3 can slide along the placement table 1 through the cooperation of the slide rail and the slider 4. The accommodation groove 5 is perpendicular to the sliding direction of the foot pedal 3. The barcode group 6 is provided with rectangular stripes, and the width and length of each rectangular stripe are the same. The barcode scanning device 7 can generate different waveform electrical signals after scanning the stripes at different positions of the barcode group 6. The controller 8 belongs to the prior art, and its working principle is to be able to collect data on the changes in the electrical signal generated by the barcode scanning device 7. When the barcode scanning device 7 and the barcode group 6 are relatively displaced, the waveform generated by the barcode scanning device 7 will change. The controller 8 calculates the change in the waveform and converts it into specific length data. The barcode group 6 is divided into an incremental barcode 61 and an equidistant barcode 62 according to the different spacing between adjacent stripes. The spacing between adjacent stripes of the incremental barcode 61 near the head plate 2 is relatively dense. If the spacing between the first and second stripes of the incremental barcode 61 near the head plate 2 is a, then the spacing between the second and third stripes is a×b, and the spacing between the third and fourth stripes is a×b×b. The spacing between adjacent stripes increases in an arithmetic progression with a common ratio of b. The spacing between adjacent stripes of the equidistant barcode 6 is the same. If the stripe width of the equidistant barcode 62 is c, and the width of the blank space between adjacent stripes is c. When the code scanning device 7 moves relative to the barcode group 6, it will scan stripes at different positions. When the code scanning device 7 scans a blank position of the barcode group 6, it is recorded as a trough; when the external detector scans a stripe of the barcode group 6, it is recorded as a peak. The controller 8 can calculate the spacing between the peak and the trough to obtain specific length data. When the barcode scanning device 7 and the incremental barcode 61 produce relative displacement, the controller 8 can calculate the length value corresponding to the waveform point at the stop position; the equidistant barcodes 62 are arranged at equal intervals, and when the barcode scanning device 7 and the equidistant barcodes 62 produce displacement, a stable waveform can be generated, and the controller 8 calculates the relative sliding distance of the pedal 3; since the two waveform signals are generated together, the combination of the waveforms can ensure that the controller 8 calculates the sliding direction of the pedal 3, thereby improving the measurement accuracy through the combination relationship of the waveforms. The pedal 3 is provided with a transmission module 9 for interacting with a Bluetooth device, and the length data processed by the controller 8 can be transmitted to the PAD or other Bluetooth devices via the transmission module 9 to achieve data interaction. The limit mark device 12 is connected to the slider 4 and can move together with the pedal 3. When measuring the height of an infant, after turning on the limit mark device 12, the pedal 3 can be moved to make the limit mark device 12 abut against the infant's heel. The actual position of the lowest point of the sole of the foot is recorded by contacting the infant's heel. The code scanning device 7 can scan the edge of the limit mark device 12. When performing ultra-precision measurement, the controller 8 will automatically correct the value recorded by the limit mark device 12 with the value scanned by the code scanning device 7, thereby obtaining accurate height data.

[0036] In one embodiment, the limit marking device 12 includes a housing 121, a connecting rod 122, a limit block 123, an elastic member 124, a connecting rod 125 and a position detection device 126; both ends of the connecting rod 125 are connected to the limit block 123 through the elastic member 124, the connecting rod 122 is arranged on the limit block 123 and passes through the slide groove 11 and is connected to the slider 4 axis, a card plate is arranged on one side of the limit block 123, the card plate is located inside the housing 121, and the limit block 12 3 are arranged at both ends of the shell 121, and the limit blocks 123 are movably connected to the shell 121, a plurality of movable grooves are arranged on the connecting rod 125, a mounting rod is arranged in the shell 121, and the mounting rod passes through the movable grooves, a plurality of position detection devices 126 are arranged on the outer wall of the shell 121, the position detection devices 126 are annularly wrapped around the shell 121, the cross section of the shell 121 is a Lello triangle, and the position detection devices 126 are electrically connected to the controller 8.

[0037] The working principle and beneficial effects of the above technical solution: through the design of the above structure, when the limit mark device 12 is activated, the position detection device 126 will abut against the sole of the baby together with the shell 121, and under the action of the restraint device 10, the sole of the foot can be completely contacted and attached to the curved surface of the shell 121. Because the shell 121 is a Lello triangle, the sole of the baby can completely step on the curved surface of the shell 121. As the baby's legs are straightened, the limit mark device 12 drives the foot pedal 3 to move to the limit position of the baby's body length, and the shell 121 is rotated with the connecting rod 122 as the rotation axis until the baby's sole can no longer kick the limit mark device 12. At this time, the skin of the sole of the foot will contact the position detection device 126, and the position detection device 126 will record the horizontal and vertical coordinates of the skin in contact with it. Then the position detection device 126 identifies the position of the baby's heel according to the horizontal and vertical coordinates, and places the heel at the The coordinates are converted into length data and transmitted to the controller 8 to correct the value of the code scanning device 7. Compared with the circle, the Lello triangle has a larger arc surface that can form a complete contact with the sole of the baby's foot, thereby avoiding the circular shell 121 being too large, resulting in an increase in the volume of the device, or the foot being too small to fit completely on the surface of the shell 121, resulting in measurement errors. When the baby shakes the limit mark device 12 horizontally, the limit block 123 can effectively reduce the impact of the horizontal shaking on the slide groove 11 through the cooperation between the elastic member 124 and the connecting rod 125. The value scanned by the code scanning device 7 can be corrected through the limit mark device 12, so as to obtain more accurate height data. At the same time, it can also swing horizontally to prevent the baby's feet from hitting the stationary position monitoring device 126 and getting injured. The limit mark device 12 is connected to the slider 4 through the slide groove 11, so that the baby can adjust the position of the foot pedal 3 by straightening his legs.

[0038] In one embodiment, the restraint device 10 includes two fixing clamps 101, two limiting clamps 102 and a wrist constraint 103; the two fixing clamps 101 are arranged in the accommodation groove 5, and the two fixing clamps 101 are symmetrically arranged, the limiting clamps 102 are arranged in the fixing clamps 101, and are movably connected to the fixing clamps 101, and the two limiting clamps 102 are both provided with a movable rod 104, one end of the movable rod 104 is connected to the axis of the limiting clamps 102, and the other end of the movable rod 104 is connected to the axis of the wrist constraint 103;

[0039] The fixing fixture 101 is a U-shaped fixture, and the inner wall of the fixing fixture 101 is provided with a plurality of latch teeth;

[0040] The limit clamp 102 includes an insertion end, a clamping end and an abutting end. The insertion end is inserted into the U-shaped opening of the fixing clamp 101. The clamping end is provided with a plurality of clamping teeth adapted to the inner wall of the fixing clamp 101. The clamping end is clamped with the inner wall of the fixing clamp 101 through the clamping teeth. The abutting end is provided with an arc surface.

[0041] The wrist restraint 103 includes two clamping members 105 , the movable rod 104 is axially connected to the clamping members 105 , the two clamping members 105 are connected by a connecting belt 106 , and the clamping members 105 are arc-shaped.

[0042] The working principle and beneficial effects of the above technical solution: through the design of the above structure, the fixing clamp 101 can be movably installed in the accommodation groove 5. Before measuring the height of the baby, it is first necessary to insert the insertion end of the limiting clamp 102 into the U-shaped opening of the fixing clamp 101, so that the teeth of the clamping end and the teeth of the inner wall of the fixing clamp 101 are clamped, and then the clamping parts 105 are pre-connected to each other through the connecting belt 106 to form a ring-shaped wrist restraint 103, and the baby to be measured is placed in the placement table 1, and the back is placed in the accommodation groove 5. The two side walls of the accommodation groove 5 can support the baby to prevent it from twisting or curling up, and the outer sides of the knees of the baby's legs are abutted against the abutment end. When the legs are placed, the outer sides of the knees will be abutted against the abutment end. The connecting end pushes the limit fixture 102 to move into the fixing fixture 101. The insertion depth of the limit fixture 102 varies with the baby's body shape, weight, etc. Because the baby cannot control the leg muscles well, the limit fixture 102 is sufficient to fix the baby's legs. The feet pass through the wrist restraint 103, and the connecting belt 106 is adjusted to adjust the restraint force of the wrist restraint 103 on the ankle. The baby's legs can be straightened through the restraint device 10 and the soles of the feet can be in contact with the limit mark device 12. Combined with the correction of the back by the accommodation groove 5, the baby can be kept stretched during measurement, thereby improving the measurement accuracy and avoiding measurement errors caused by the baby curling up or manual support.

[0043] In one embodiment, the controller 8 can decode and calculate the image scanned by the code scanning device 7. The peak (i.e., rising edge) and trough (i.e., falling edge) of the waveform output by the code scanning device 7 can be converted into a quadratic curve for fitting. The gray value f(i) output by a certain pixel received on the photosensitive surface of the code scanning device 7 can be expressed by the following formula, that is,

[0044]

[0045] Wherein, g(x) is the light intensity distribution of the barcode group 6 scanned by the barcode scanning device 7, and the quadratic curve of g(x) is:

[0046] g(x)=ax 2 +bx+c

[0047] Substituting into the formula we get

[0048]

[0049] Wherein, a is the basic spacing of the stripes in the increasing barcode 61; b is the equal-proportional value in the increasing barcode 61; c is the spacing of the stripes in the equal-distance barcode 62;

[0050] Assume that the number of the maximum difference point i = 0, we can get that the numbers of the pixels on the left and right sides of point 0 are -1 and 1 respectively, and the corresponding grayscale values ​​are f(-1) and f(1). The three-point formula is combined to get

[0051]

[0052] Substitute into the formula

[0053]

[0054] The value of the vertex x of the quadratic curve can be obtained

[0055]

[0056] Substitute the calculated values ​​of the quadratic curve vertices into Figure 3 The exact height of the baby can be calculated from the curve. The fringe waveforms of the incremental barcode 61 and the equidistant barcode 62 can be input into the controller 8 in advance through the above formula to form a Figure 3The waveform curve is obtained, and the rising edge (peak) and falling edge (trough) of the waveform curve are numerically marked. After that, the scanning device 7 can scan the incremental barcode 61 and the equidistant barcode 62, and calculate the grayscale value of the scanned stripes by the above formula, so as to obtain the vertex value of the quadratic curve at that point. The vertex value of the quadratic curve is compared with the reference graph in the controller 8 to obtain the precise position of the scanning device 7, and is converted into the height value of the baby in combination with the reference graph, so that the device can obtain the accurate height value of the baby.

[0057] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0058] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A separate baby height measuring device, characterized in that: include: A placement platform (1), a barcode group (6), a code scanning device (7) and a controller (8); a head plate (2) is arranged at one end of the placement platform (1); a foot pedal (3) is arranged on the placement platform (1); the foot pedal (3) is movably connected to the placement platform (1); the code scanning device (7) and the controller (8) are both arranged on the foot pedal (3); the barcode group (6) is arranged on the top surface of the placement platform (1); a restraining device (10) is arranged on the placement platform (1); and the code scanning device (7) is electrically connected to the controller (8); The top surface of the placement platform (1) is provided with a receiving groove (5), the receiving groove (5) and the foot pedal (3) are arranged in a normal direction, the restraining device (10) is arranged in the receiving groove (5), and the barcode group (6) is respectively located on both sides of the receiving groove (5); The restraint device (10) comprises two fixing clamps (101), two limiting clamps (102) and a wrist restraint (103); the two fixing clamps (101) are arranged in the accommodation groove (5), and the two fixing clamps (101) are symmetrically arranged, the limiting clamp (102) is arranged in the fixing clamp (101) and is movably connected to the fixing clamp (101), and a movable rod (104) is arranged on the two limiting clamps (102), one end of the movable rod (104) is connected to the axis of the limiting clamp (102), and the other end of the movable rod (104) is connected to the axis of the wrist restraint (103); The fixing clamp (101) is a U-shaped clamp, and the inner wall of the fixing clamp (101) is provided with a plurality of latch teeth; The limiting clamp (102) comprises an insertion end, a clamping end and an abutting end, the insertion end is inserted into the U-shaped opening of the fixing clamp (101), the clamping end is provided with a plurality of clamping teeth adapted to the inner wall of the fixing clamp (101), the clamping end is clamped with the inner wall of the fixing clamp (101) via the clamping teeth, and the abutting end is provided with an arc surface; The wrist restraint (103) comprises two clamping members (105), the movable rod (104) is axially connected to the clamping members (105), the two clamping members (105) are connected via a connecting belt (106), and the clamping members (105) are arc-shaped.

2. The separate infant height measuring device according to claim 1, characterized in that: The side wall of the placement platform (1) is provided with a slide rail, and both ends of the foot pedal (3) are connected to the slide rail via a slider (4).

3. The detachable baby height measuring device according to claim 1, characterized in that: The barcode group (6) comprises an incremental barcode (61) and an equidistant barcode (62); the incremental barcode (61) and the equidistant barcode (62) are arranged in parallel and are respectively located on two sides of the accommodation groove (5); the barcode scanning device (7) can scan the incremental barcode (61) and the equidistant barcode (62).

4. The separate infant height measuring device according to claim 3, characterized in that: The distance between the stripes at both ends of the incremental barcode (61) is the total length of the measuring device, and the spacing between adjacent stripes of the incremental barcode (61) increases in sequence in a geometric progression.

5. The detachable baby height measuring device according to claim 3, characterized in that: The stripe width of the equidistant barcode (62) is the same as the distance between two adjacent stripes.

6. The separate infant height measuring device according to claim 1, characterized in that: A transmission module (9) is provided on the foot pedal (3), and the transmission module (9) is electrically connected to the controller (8).

7. The detachable baby height measuring device according to claim 2, characterized in that: The slide rail is provided with a slide groove (11), the foot pedal (3) is provided with a limit mark device (12), both ends of the limit mark device (12) pass through the slide groove (11) and are connected to the slider (4), and the limit mark device (12) is electrically connected to the controller (8).

8. The separate infant height measuring device according to claim 7, characterized in that: The limit mark device (12) comprises a housing (121), a connecting rod (122), a limit block (123), an elastic member (124), a connecting rod (125) and a position detection device (126); both ends of the connecting rod (125) are connected to the limit block (123) through the elastic member (124); the connecting rod (122) is arranged on the limit block (123) and passes through the slide groove (11) to be connected to the slider (4) axis; a card plate is arranged on one side of the limit block (123); the card plate is located inside the housing (121); the limit block (12 3) are arranged at both ends of the shell (121), and the limit block (123) is movably connected to the shell (121), a plurality of movable grooves are arranged on the connecting rod (125), a mounting rod is arranged in the shell (121), and the mounting rod passes through the movable groove, a plurality of position detection devices (126) are arranged on the outer wall of the shell (121), the position detection device (126) is annularly wrapped on the shell (121), the cross-section of the shell (121) is a Lello triangle, and the position detection device (126) is electrically connected to the controller (8).

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