CN116447962B - Scar thickness measuring equipment based on piezoelectric effect - Google Patents
Scar thickness measuring equipment based on piezoelectric effect Download PDFInfo
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- CN116447962B CN116447962B CN202310219044.2A CN202310219044A CN116447962B CN 116447962 B CN116447962 B CN 116447962B CN 202310219044 A CN202310219044 A CN 202310219044A CN 116447962 B CN116447962 B CN 116447962B
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- 231100000241 scar Toxicity 0.000 title claims abstract description 56
- 230000000694 effects Effects 0.000 title claims abstract description 18
- 230000001681 protective effect Effects 0.000 claims abstract description 33
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 230000008859 change Effects 0.000 claims abstract description 6
- 239000000523 sample Substances 0.000 claims description 52
- 238000005259 measurement Methods 0.000 claims description 27
- 241001272720 Medialuna californiensis Species 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004441 surface measurement Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention discloses scar thickness measuring equipment based on a piezoelectric effect, which comprises an electrometer, a cable, an upper cover, an outer protective cover, a rotary positioning shell, a guide pressing strip and a piezoelectric measuring mechanism, wherein the outer protective cover is arranged below the upper cover in a threaded connection mode, the rotary positioning shell is arranged in the circumferential side wall of the outer protective cover in a rotary connection mode, the piezoelectric measuring mechanism is sleeved in the outer protective cover, the piezoelectric measuring mechanism can output corresponding charges according to the change of the scar outline and further convert the charges into scar thickness, the outer protective cover and the rotary positioning shell are matched to adjust the height of the piezoelectric measuring mechanism, one end of the cable penetrates through the center of the upper cover and is arranged on the piezoelectric measuring mechanism, the electrometer is arranged at one end, away from the upper cover, of the cable, and the guide pressing strip is arranged below the rotary positioning shell. The invention belongs to the technical field of medical appliances, and particularly relates to scar thickness measuring equipment based on a piezoelectric effect.
Description
Technical Field
The invention belongs to the technical field of medical appliances, and particularly relates to scar thickness measuring equipment based on a piezoelectric effect.
Background
The scar is caused by various reasons, when in treatment, doctors need to evaluate the current condition of the scar, the thickness of the scar is an important influencing factor, the current hospital measurement mode mainly comprises visual measurement, ruler measurement and ultrasonic measurement, the accuracy of the visual measurement or ruler is not high, and the error is larger when in body surface measurement with radian.
The ultrasonic measurement thickness dimension has the defects that the coupling effect of the probe and the contact surface is poor, the reflected echo is low, the measurement is inaccurate, even if the couplant is smeared, the gradient and the pits on the surface of the scar are difficult to compensate, the sound wave is scattered when encountering the bottom surface, the probe cannot receive a bottom wave signal, and the measurement effect is poor.
Accordingly, it is highly desirable to provide a device that can precisely measure scar thickness.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention provides scar thickness measuring equipment based on the piezoelectric effect.
The technical scheme adopted by the invention is as follows: the invention provides scar thickness measuring equipment based on a piezoelectric effect, which comprises an electrometer, a cable, an upper cover, an outer protective cover, a rotary positioning shell, guide pressing strips and a piezoelectric measuring mechanism, wherein the outer protective cover is arranged below the upper cover in a threaded connection mode, the rotary positioning shell is rotatably arranged in the circumferential side wall of the outer protective cover, the piezoelectric measuring mechanism is sleeved in an inner cavity of the outer protective cover, one end of the cable penetrates through the center of the upper cover and is arranged on the piezoelectric measuring mechanism, the electrometer is arranged at one end of the cable, which is far away from the upper cover, the guide pressing strips are arranged below the rotary positioning shell, and in order to protect skin during measurement, the bottoms of the guide pressing strips are arc-shaped, and meanwhile, the guide pressing strips are arranged on the skin surface in pairs, so that the whole equipment is completely parallel to the skin surface at the scar position, the piezoelectric measuring mechanism is perpendicular to the skin surface during measurement, measurement accuracy is improved, and errors caused by oblique measurement are avoided.
Further, the piezoelectric measuring mechanism comprises a measuring probe rod, a fixing flange, a guide sleeve, a miniature precision spring, a conducting probe rod and a PIEZOR piezoelectric film, wherein the fixing flange is arranged below an inner cavity of the outer protective cover, the guide sleeve is arranged at the center of the upper wall of the fixing flange, the measuring probe rod penetrates through the fixing flange to be slidably arranged in the guide sleeve, the bottom of the miniature precision spring is arranged at the top end of the measuring probe rod, the conducting probe rod penetrates through the guide sleeve to be arranged on the miniature precision spring, the conducting probe rod can vertically slide in the guide sleeve, the PIEZOR piezoelectric film is arranged at the top end of the conducting probe rod, positive and negative electrodes are arranged on the upper side and the lower side of the PIEZOR piezoelectric film, the positive and negative electrodes are connected with a cable, and when the PIEZOR piezoelectric film receives pressure within a range of 0-10N, the output electric charge quantity is in high linear correlation with the pressure, and the electrometer can measure the electric charge quantity of the positive and negative electrodes on two sides of the PIEZOR piezoelectric film through the cable, so that the pressure born by the PIEZOR piezoelectric film is obtained.
Further, in order to prevent that the measurement probe rod from causing the damage to human skin surface, measurement bulb is equipped with to measure the probe rod bottom, simultaneously, in order to avoid the conduction probe rod to cause the damage to PIEZOR piezoelectric film, conduction probe rod top is equipped with the conduction bulb, and indentation measuring mechanism is when not working, measurement probe rod is under the natural sagging of gravity effect, the conduction bulb is tangent with PIEZOR piezoelectric film under miniature precision spring's effect, and PIEZOR piezoelectric film is normal state.
Further, the outer protection casing includes casing and last boss, go up boss threaded connection and locate in the upper cover, the casing is located down of the boss, it is equipped with the electrode groove that is used for installing positive and negative electrode to go up the boss hole, it is equipped with the step one that is used for fixed PIEZOR piezoelectric film to go up boss hole and be close to electrode groove bottom position, it is equipped with the step two that is used for locating fixed flange to go up the casing hole lower extreme, casing circumference lateral wall bottom is equipped with the altitude mixture control locating hole, in order to make rotatory positioning shell can reciprocal rotation, the central angle of altitude mixture control locating hole is greater than 180 degrees and less than 270 degrees, the altitude mixture control locating hole includes rotation groove, indent thread groove, breaks away from groove and evagination thread groove, rotation groove is located in the casing circumference lateral wall, indent thread groove is adjacent locates rotation groove one end, indent thread groove is concentric with rotation groove, the groove width of indent thread groove is greater than rotation groove's groove width, the one end that rotation groove was kept away from to the indent thread groove is located adjacently, the groove width that breaks away from rotation groove width is less than evagination thread groove.
Further, the rotary positioning shell comprises a half moon rotating plate, an inner concave thread arc plate, an outer convex thread arc plate and a connecting rod, wherein the half moon rotating plate is arranged in a rotating groove in the inner side wall of the outer protective cover, the outer convex thread arc plate is adjacently arranged at one end of the half moon rotating plate, the outer convex thread arc plate can be meshed and fixed with the inner concave thread groove, the inner concave thread arc plate is adjacently arranged at one end, far away from the outer convex thread arc plate, of the half moon rotating plate, the inner concave thread arc plate can be meshed and fixed with the outer convex thread groove, the connecting rod is symmetrically arranged on bottom walls of the inner concave thread arc plate and the outer convex thread arc plate respectively, when the rotary positioning shell rotates from the inner concave thread arc plate to the outer convex thread arc plate, the outer convex thread arc plate rotates to a position in a separating groove with wider width, the inner concave thread arc plate rotates to a rotating groove with wider width, the rotary positioning shell is separated from the meshing position, and the rotary positioning shell can move up and down to adjust the height.
The beneficial effects obtained by the invention by adopting the structure are as follows:
in the piezoelectric measuring mechanism, by utilizing the characteristic that the PIEZOR piezoelectric film is subjected to linear output charge after being pressed within 0-10N, the height of the scar outline is changed by measuring the force transmission action of the probe rod, the miniature precision spring and the conducting probe rod, the measuring probe rod presses the miniature precision spring to deform and generate pressure, the pressure is transmitted to the PIEZOR piezoelectric film through the conducting probe rod, so that the PIEZOR piezoelectric film deforms to generate voltage, the pressure applied by the piezoelectric material is obtained through the voltage change, the scar height can be obtained through further calculation, the sensitivity of the piezoelectric film is high, and the piezoelectric film is very sensitive to the change of the scar height;
the guide sleeve can ensure that the miniature precise spring is in the vertical direction, and prevent the miniature precise spring from being inclined after being stressed, so that inaccurate measurement is caused;
the connecting and fixing mode of the rotary positioning shell and the outer protective cover ensures that the device can measure the scar protruding outwards and the scar sinking inwards, the rotary positioning shell is rotated to separate the threaded connection part of the rotary positioning shell and the outer protective cover, the height can be adjusted by moving up and down, and the rotary positioning shell and the outer protective cover reversely rotate after reaching the required height, so that the threaded connection part is meshed, the operation is concise and rapid, the screw thread is not required to be screwed for a long time, and when the pit-shaped scar is measured, the height of the measuring probe rod is only required to be adjusted to be lower than the height of the guide depression bar;
the guide pressing strips are arranged in pairs, the bottoms of the guide pressing strips are arc-shaped, when the equipment slides on the skin, the skin can be protected from being scratched, meanwhile, when the guide pressing strips are placed on the surface of the skin, the whole equipment is completely parallel to the surface of the skin at the scar, the measuring probe rod is perpendicular to the scar direction, and errors can not be generated due to the fact that the measuring direction is not perpendicular.
Drawings
Fig. 1 is a schematic structural diagram of a scar thickness measuring device based on piezoelectric effect according to the present invention;
FIG. 2 is a cross-sectional view of a piezoelectric measurement mechanism;
FIG. 3 is a state diagram of a piezoelectric measurement mechanism;
FIG. 4 is an enlarged view of section I of FIG. 3;
FIG. 5 is an exploded view of a scar thickness measuring device based on piezoelectric effect according to the present invention;
FIG. 6 is a schematic view of the structure of the rotary positioning housing;
FIG. 7 is a bottom view of the rotational positioning housing;
FIG. 8 is a schematic structural view of an outer shield;
FIG. 9 is an isometric view of an outer shield;
FIG. 10 is a bottom view of the outer shield;
FIG. 11 is a cross-sectional view taken along the direction A-A in FIG. 10;
FIG. 12 is a schematic view of dynamic mechanical linearity of a PIEZOR piezoelectric film;
FIG. 13 is a schematic diagram of a force analysis of a piezoelectric measurement mechanism.
Wherein, 1, an electrometer, 2, a cable, 3, an upper cover, 4, an outer protective cover, 5, a rotary positioning shell, 6, a guide pressing strip, 7, a piezoelectric measuring mechanism, 8, a measuring probe rod, 9, a fixed flange, 10, a guide sleeve, 11, a miniature precision spring, 12, a conductive probe rod, 13, a PIEZOR piezoelectric film, 14, a positive electrode, a negative electrode, 15 and a conductive ball head, 16, measuring ball heads, 17, a half moon rotating plate, 18, a concave thread arc plate, 19, a convex thread arc plate, 20, a connecting rod, 21, a shell, 22, an upper boss, 23, an electrode groove, 24, a first step, 25, a height adjusting positioning hole, 26, a second step, 27, a rotating groove, 28, a concave thread groove, 29, a disengaging groove, 30 and a convex thread groove.
In fig. 13, L1 is the initial length of the micro precision spring, L2 is the length of the micro precision spring after being pressed, P is the scar to be measured on the skin, H is the height of the highest point of the scar, F is the pressure exerted by the piezoelectric film of PIEZOR, m is the deformation height of the stress point of the piezoelectric film of PIEZOR, it is known that h=l1-l2+m, f=k (L1-L2), K is the elastic coefficient of the micro precision spring, and since the pressure exerted by the piezoelectric film of PIEZOR is very small and the deformation m is much smaller than H, the change after the compression of the spring can be regarded as the height of the scar, i.e. h≡l1-L2.
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention; all other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate orientation or positional relationships based on those shown in the drawings, merely to facilitate description of the invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
As shown in fig. 1 and 2, the scar thickness measuring device based on the piezoelectric effect provided by the invention comprises an electrometer 1, a cable 2, an upper cover 3, an outer protective cover 4, a rotary positioning shell 5, a guide pressing strip 6 and a piezoelectric measuring mechanism 7, wherein the outer protective cover 4 is arranged below the upper cover 3 in a threaded connection manner, the rotary positioning shell 5 is rotatably connected and arranged in the circumferential side wall of the outer protective cover 4, the piezoelectric measuring mechanism 7 is sleeved in the inner cavity of the outer protective cover 4, one end of the cable 2 penetrates through the upper cover 3 and is arranged on the piezoelectric measuring mechanism 7, the electrometer 1 is arranged at one end of the cable 2 far away from the upper cover 3, the guide pressing strip 6 is arranged below the rotary positioning shell 5, and in order to protect skin during measurement, the bottom of the guide pressing strip 6 is arc-shaped, meanwhile, the guide pressing strip 6 is arranged on the skin surface in pairs, so that the whole device is completely parallel to the skin surface at the scar, the piezoelectric measuring mechanism 7 is perpendicular to the skin surface during measurement, measurement accuracy is improved, and errors caused by oblique measurement are avoided.
As shown in fig. 2, 3, 5 and 12, the piezoelectric measuring mechanism 7 includes a measuring probe 8, a fixing flange 9, a guiding sleeve 10, a micro precision spring 11, a conducting probe 12 and a piezo piezoelectric film 13, the fixing flange 9 is arranged below the inner cavity of the outer protective cover 4, the guiding sleeve 10 is arranged at the center of the upper wall of the fixing flange 9, the measuring probe 8 penetrates through the fixing flange 9 and is slidably arranged in the guiding sleeve 10, the bottom of the micro precision spring 11 is arranged at the top end of the measuring probe 8, the conducting probe 12 penetrates through the guiding sleeve 10 and is arranged on the micro precision spring 11, the conducting probe 12 can slide up and down in the guiding sleeve 10, the piezo piezoelectric film 13 is arranged at the top end of the conducting probe 12, positive and negative electrodes 14 are arranged at the upper side and the lower side of the piezo piezoelectric film 13, the positive and negative electrodes 14 are connected with the cable 2, when the piezo piezoelectric film 13 receives pressure within the range of 0-10N, the output charge quantity and the pressure are in a high linear relation, and the charge quantity of the positive and negative electrodes 14 at the two sides of the piezo piezoelectric film 13 can be measured through the cable 2, so that the pressure of the piezo film 13 receives the pressure, and the pressure of the piezo film 13 is obtained.
As shown in fig. 3 and 4, in order to prevent the measuring probe rod 8 from damaging the skin surface of the human body, the bottom of the measuring probe rod 8 is provided with a measuring ball head 16, meanwhile, in order to avoid the conducting probe rod 12 from damaging the PIEZOR piezoelectric film 13, the top end of the conducting probe rod 12 is provided with a conducting ball head 15, when the indentation measuring mechanism is not working, the measuring probe rod 8 naturally sags under the action of gravity, the conducting ball head 15 is tangent to the PIEZOR piezoelectric film 13 under the action of the miniature precision spring 11, and the PIEZOR piezoelectric film 13 is in a normal state.
As shown in fig. 8-11, the outer protective cover 4 comprises a shell 21 and an upper boss 22, the upper boss 22 is in threaded connection with the upper cover 3, the shell 21 is arranged below the upper boss 22, an electrode groove 23 for installing the positive and negative electrodes 14 is arranged in an inner hole of the upper boss 22, a step one 24 for fixing the PIEZOR piezoelectric film 13 is arranged at the bottom position of the upper boss 22 near the electrode groove 23, a step two 26 for positioning the fixed flange 9 is arranged at the lower end of the inner hole of the shell 21, a height-adjusting positioning hole 25 is arranged at the bottom of the circumferential side wall of the shell 21, in order to enable the rotary positioning shell 5 to rotate reciprocally, the central angle of the height-adjusting positioning hole 25 is larger than 180 degrees and smaller than 270 degrees, the height-adjusting positioning hole 25 comprises a rotary groove 27, an inner groove 28, a disengaging groove 29 and an outer groove 30, the rotary groove 27 is arranged in the circumferential side wall of the shell 21, the inner groove 28 is adjacently arranged at one end of the rotary groove 27, the inner groove 28 is concentric with the rotary groove 27, the groove width of the inner groove 28 is larger than the groove width of the rotary groove 27, the disengaging groove 29 is adjacently arranged at one end of the inner groove 28, the end of the rotary groove 28 is far away from the rotary groove 27, and the width of the rotating groove 30 is larger than the outer groove 27 is larger than the adjacent groove 30.
As shown in fig. 6 and 7, the rotary positioning shell 5 includes a half moon rotating plate 17, an inner concave thread arc plate 18, an outer convex thread arc plate 19 and a connecting rod 20, the half moon rotating plate 17 is disposed in a rotating groove 27 in the inner side wall of the outer protective cover 4, the outer convex thread arc plate 19 is disposed adjacent to one end of the half moon rotating plate 17, the outer convex thread arc plate 19 can be meshed and fixed with the inner concave thread arc plate 28, the inner concave thread arc plate 18 is disposed adjacent to one end of the half moon rotating plate 17 away from the outer convex thread arc plate 19, the inner concave thread arc plate 18 can be meshed and fixed with the outer convex thread arc plate 30, the connecting rod 20 is symmetrically disposed on bottom walls of the inner concave thread arc plate 18 and the outer convex thread arc plate 19, when the rotary positioning shell 5 is rotated from the inner concave thread arc plate 18 to the outer convex thread arc plate 19, the outer convex thread arc plate 19 is rotated to a position in a separating groove 29 with a wider groove width, the inner concave thread arc plate 18 is rotated to a position of the rotating groove 27 with a wider groove width, the rotary positioning shell 5 is separated from the height adjusting positioning hole 25 from the meshing position, and the rotary positioning shell 5 can be moved up and down to adjust the height.
When the device is specifically used, the outer wall of the outer protective cover 4 is held by a hand, the guide pressing strips 6 are placed on two sides of a scar of a patient, if the scar is positioned on the surface of four limbs, the length direction of the guide pressing strips 6 is the same as the extending direction of the four limbs, after the guide pressing strips 6 are attached to the surface of the skin, the guide pressing strips 6 are parallel to the surface of the skin, and the piezoelectric measuring mechanism 7 is perpendicular to the guide pressing strips 6, so that the measuring probe rod 8 of the piezoelectric measuring mechanism 7 is perpendicular to the surface of the skin to be measured, and at the moment, the thickness of the scar is the height of the measuring probe rod 8 along the change of the scar in the direction perpendicular to the skin.
When the scar protrudes from the skin surface, the rotary positioning shell 5 is rotated along the outer thread arc plate 19 towards the direction of the detachment groove 29, so that the outer protective cover 4 and the rotary positioning shell 5 are detached, at this time, the outer thread arc plate 19 is not meshed with the inner concave thread groove 28 any more, the inner concave thread arc plate 18 is not meshed with the outer thread groove 30 any more, the rotary positioning shell 5 is moved up and down along the height direction of the height adjustment positioning hole 25, the bottom of the measuring bulb 16 is flush with the bottom of the guide depression bar 6, after reaching the required height, the rotary positioning shell is rotated reversely, the threaded connection is re-meshed, then the outer protective cover 4 is held by hand and slides along the direction of the guide depression bar 6, so that the measuring bulb 16 slides from the front end of the scar to the tail end of the scar, in the moving process, the measuring probe 8 moves upwards along with the outline of the scar, when the measuring probe 8 moves upwards, the miniature precision spring 11 compresses upwards, pushes the conducting probe 12 upwards, the conducting bulb 15 of the conducting probe 12 presses the EZOR piezoelectric film 13 to slightly deform, and the PIZOR piezoelectric film 13 deforms, and then the positive and negative electrode 14 and the positive electrode 14 are slightly deformed, and the electric charge 1 is detected by the electrometer.
As shown in fig. 12, since the force applied to the piezoelectric PIEZOR film 13 and the output electric charge are linearly and positively correlated, the electric charge measured by the electrometer 1 can be used to obtain the pressure F applied to the piezoelectric PIEZOR film 13, and as can be seen from the force analysis in fig. 13, f=k (L1-L2), so that the compression deformation amount L1-l2=f/K of the spring can be obtained, the maximum height of deformation of the force applied point of the piezoelectric PIEZOR film 13 is m, and therefore, the height h=l1-l2+m of the scar, while the pressure applied to the piezoelectric PIEZOR film 13 is small, the deformation amount is in the um level, m is far smaller than the scar height H, the error in the um level has little influence on the scar thickness evaluation, and therefore the height of the scar can be approximately equal to the spring compression deformation amount, i.e., h≡l1-L2, and thus the thickness H of the scar can be obtained.
When the scar to be measured is a pit-shaped scar lower than the skin surface, the rotary positioning shell 5 is rotated by the same method, so that the bottom height of the measuring ball head 16 is lower than the bottom height of the guide pressing strip 6, when the guide pressing strip 6 is placed on two sides of the scar, the measuring ball head 16 is naturally positioned at the lowest position of the pit of the scar, then the measuring ball head 16 moves from the lowest point to the highest point of the scar by sliding the measuring equipment back and forth by the same method, in the process, charges are also generated by the PIEZOR piezoelectric film 13, and the thickness of the pit-shaped scar can be obtained through calculation.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
The invention and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the invention as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present invention.
Claims (5)
1. Scar thickness measuring equipment based on piezoelectricity effect, including upper cover (3), its characterized in that: the novel anti-theft device is characterized by further comprising an outer protective cover (4), a rotary positioning shell (5), a guide pressing strip (6) and a piezoelectric measuring mechanism (7), wherein the outer protective cover (4) is arranged below the upper cover (3) in a threaded connection mode, the rotary positioning shell (5) is arranged in the circumferential side wall of the outer protective cover (4) in a rotary connection mode, the piezoelectric measuring mechanism (7) is sleeved in an inner cavity of the outer protective cover (4), and the guide pressing strip (6) is arranged below the rotary positioning shell (5);
the piezoelectric measuring mechanism (7) comprises a PIEZOR piezoelectric film (13), a measuring probe rod (8), a fixing flange (9), a guide sleeve (10), a miniature precision spring (11) and a conducting probe rod (12), wherein the PIEZOR piezoelectric film (13) is arranged on the side wall of the inner cavity of the outer protective cover (4), the fixing flange (9) is arranged below the inner cavity of the outer protective cover (4), the guide sleeve (10) is arranged at the center of the upper wall of the fixing flange (9), the measuring probe rod (8) penetrates through the fixing flange (9) to be slidably arranged in the guide sleeve (10), the bottom of the miniature precision spring (11) is arranged at the top end of the measuring probe rod (8), and the conducting probe rod (12) penetrates through the guide sleeve (10) to be arranged on the miniature precision spring (11);
the PIEZOR piezoelectric film (13) is arranged at the top end of the conducting probe rod (12), and positive and negative electrodes (14) are arranged on the upper side and the lower side of the PIEZOR piezoelectric film (13);
the bottom of the measuring probe rod (8) is provided with a measuring ball head (16), and the top end of the conducting probe rod (12) is provided with a conducting ball head (15);
the rotary positioning shell (5) comprises a half-moon rotating plate (17), an inner concave thread arc plate (18), an outer convex thread arc plate (19) and a connecting rod (20), wherein the half-moon rotating plate (17) is arranged in the inner side wall of the outer protective cover (4), the outer convex thread arc plate (19) is adjacently arranged at one end of the half-moon rotating plate (17), the inner concave thread arc plate (18) is adjacently arranged at one end, far away from the outer convex thread arc plate (19), of the half-moon rotating plate (17), and the connecting rod (20) is symmetrically arranged on the bottom walls of the inner concave thread arc plate (18) and the outer convex thread arc plate (19) respectively;
in the piezoelectric measuring mechanism (7), by utilizing the characteristic that the PIEZOR piezoelectric film (13) is pressed in 0-10N and then outputs electric charge linearly, the thickness of the scar outline is changed through the force transmission function of the measuring probe rod (8), the miniature precision spring (11) and the conducting probe rod (12), the measuring probe rod (8) presses the miniature precision spring (11) to deform and generate pressure, the pressure is transmitted to the PIEZOR piezoelectric film (13) through the conducting probe rod (12), the PIEZOR piezoelectric film (13) deforms to generate voltage, and accordingly the pressure applied by the piezoelectric material is obtained through the voltage change, and the scar thickness is calculated.
2. A scar thickness measurement device based on a piezoelectric effect according to claim 1, characterized in that: the outer protective cover (4) comprises a shell (21) and an upper boss (22), wherein the upper boss (22) is in threaded connection with the upper cover (3), the shell (21) is arranged below the upper boss (22), an electrode groove (23) for installing positive and negative electrodes (14) is formed in an inner hole of the upper boss (22), a first step (24) is formed in the inner hole of the upper boss (22) close to the bottom of the electrode groove (23), and a second step (26) is formed in the lower end of the inner hole of the shell (21).
3. A scar thickness measurement device based on a piezoelectric effect according to claim 2, characterized in that: the bottom of the circumferential side wall of the shell (21) is provided with a height adjusting and positioning hole (25), and the central angle of the height adjusting and positioning hole (25) is larger than 180 degrees and smaller than 270 degrees.
4. A scar thickness measurement device based on a piezoelectric effect according to claim 3, characterized in that: the height-adjusting positioning hole (25) comprises a rotating groove (27), an inner concave thread groove (28), a disengaging groove (29) and an outer convex thread groove (30), wherein the rotating groove (27) is formed in the circumferential side wall of the shell (21), the inner concave thread groove (28) is adjacently arranged at one end of the rotating groove (27), the inner concave thread groove (28) is concentric with the rotating groove (27), the groove width of the inner concave thread groove (28) is larger than that of the rotating groove (27), the disengaging groove (29) is adjacently arranged at one end, away from the rotating groove (27), of the inner concave thread groove (28), the groove width of the disengaging groove (29) is larger than that of the rotating groove (27), the outer convex thread groove (30) is adjacently arranged at one end, away from the disengaging groove (29), and the groove width of the outer convex thread groove (30) is smaller than that of the rotating groove (27).
5. A scar thickness measurement device based on a piezoelectric effect according to claim 4, characterized in that: the guide pressing strips (6) are arranged in pairs, and the bottoms of the guide pressing strips (6) are arc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310219044.2A CN116447962B (en) | 2023-03-09 | 2023-03-09 | Scar thickness measuring equipment based on piezoelectric effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310219044.2A CN116447962B (en) | 2023-03-09 | 2023-03-09 | Scar thickness measuring equipment based on piezoelectric effect |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116447962A CN116447962A (en) | 2023-07-18 |
| CN116447962B true CN116447962B (en) | 2023-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310219044.2A Active CN116447962B (en) | 2023-03-09 | 2023-03-09 | Scar thickness measuring equipment based on piezoelectric effect |
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| CN (1) | CN116447962B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4314481A (en) * | 1978-12-22 | 1982-02-09 | Kistler Instruments Ag | Piezeolectric strain transducer |
| CN101563113A (en) * | 2006-08-03 | 2009-10-21 | 利兰斯坦福青年大学托管委员会 | Device and bandage for treating or preventing scars and/or scars, and method and kit therefor |
| CN106871773A (en) * | 2017-02-14 | 2017-06-20 | 肇庆市嘉仪仪器有限公司 | A kind of online noncontact thickness-measuring equipment and its measuring method |
| CN110887587A (en) * | 2019-12-30 | 2020-03-17 | 济南大学 | A large-range piezoelectric thin-film three-dimensional force sensor and its measurement method |
| CN113884231A (en) * | 2021-09-29 | 2022-01-04 | 中国科学院光电技术研究所 | A device for testing the output force of piezoelectric ceramic driver |
-
2023
- 2023-03-09 CN CN202310219044.2A patent/CN116447962B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4314481A (en) * | 1978-12-22 | 1982-02-09 | Kistler Instruments Ag | Piezeolectric strain transducer |
| CN101563113A (en) * | 2006-08-03 | 2009-10-21 | 利兰斯坦福青年大学托管委员会 | Device and bandage for treating or preventing scars and/or scars, and method and kit therefor |
| CN106871773A (en) * | 2017-02-14 | 2017-06-20 | 肇庆市嘉仪仪器有限公司 | A kind of online noncontact thickness-measuring equipment and its measuring method |
| CN110887587A (en) * | 2019-12-30 | 2020-03-17 | 济南大学 | A large-range piezoelectric thin-film three-dimensional force sensor and its measurement method |
| CN113884231A (en) * | 2021-09-29 | 2022-01-04 | 中国科学院光电技术研究所 | A device for testing the output force of piezoelectric ceramic driver |
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| CN116447962A (en) | 2023-07-18 |
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