阅读说明：本技术 一种基于单片机控制的高精度咬合力测量仪及方法 (High-precision occlusal force measuring instrument and method based on single chip microcomputer control ) 是由 史振宇 蒋森河 王继来 王兆辉 刘逢时 于 2019-09-30 设计创作，主要内容包括：本发明公开了一种基于单片机控制的高精度咬合力测量仪及方法,包括测量仪主体,测量仪主体通过L型连接管与咬合端连接,L型连接管和测量仪主体插接连接,所述咬合端包括上下相对设置的两咬合垫,两咬合垫之间夹持可更换的压电薄膜传感器,压电薄膜传感器与信号处理单元连接,信号处理单元与单片机连接,单片机将压电薄膜传感器的电压信号转换为咬合力数值。该测量仪采用压电薄膜传感器,增加咬合的舒适度和测量结果精确性,通过L型连接管的设置,能避免咬合时邻近牙齿的咬合干扰。(The invention discloses a high-precision occlusal force measuring instrument and a high-precision occlusal force measuring method based on single chip microcomputer control. The measuring instrument adopts the piezoelectric film sensor, improves the comfort level of occlusion and the accuracy of measuring results, and can avoid occlusion interference of adjacent teeth during occlusion by arranging the L-shaped connecting pipe.)

1. The utility model provides a high accuracy interlock force measuring apparatu based on single chip microcomputer control, characterized by includes the measuring apparatu main part, and the measuring apparatu main part passes through L type connecting pipe and is connected with the interlock end, L type connecting pipe and measuring apparatu main part plug-in connection, the interlock end includes relative two interlock pads that set up from top to bottom, the removable piezoelectric film sensor of centre gripping between two interlock pads, and piezoelectric film sensor is connected with signal processing unit, and signal processing unit and single chip microcomputer are connected, and the single chip microcomputer converts the voltage signal of piezoelectric film sensor into interlock force numerical value.

2. The occlusal force measuring instrument of claim 1, wherein the two occlusal pads are connected by a buckle, and the outer end surfaces of the occlusal pads are arc-shaped.

3. The occlusal force measuring instrument of claim 1, wherein the upper occlusal pad of the occlusal end has a top portion higher than the top wall of the L-shaped connecting tube, and a lower occlusal pad of the occlusal end has a bottom portion lower than the bottom wall of the L-shaped connecting tube.

4. The bite force measuring instrument according to claim 1, wherein said L-shaped connecting tube is a hollow tube, and a longitudinal section of said L-shaped connecting tube is an ellipse.

5. The occlusal force measuring instrument according to claim 1, wherein the L-shaped connection tube is detachably connected to the measuring instrument body, and a mechanical switch is provided outside the measuring instrument body, and the L-shaped connection tube is clamped or released by the mechanical switch.

6. The occlusal force measuring instrument according to claim 5, wherein the mechanical switch comprises a rocker button disposed outside the measuring instrument body, the rocker button is connected to a double-rocker clamping mechanism disposed inside the measuring instrument body, the double-rocker clamping mechanism comprises a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are respectively connected to two sides of the rocker button, the bottom of the first connecting rod is hinged to the first clamp, the first clamp is further fixedly connected to the measuring instrument body through a first rotating shaft, the bottom of the second connecting rod is hinged to the second clamp, and the second clamp is further fixedly connected to the measuring instrument body through a second rotating shaft.

7. An occlusal force measuring instrument as claimed in claim 6, wherein the middle part of said rocker button is hinged to the measuring instrument body through a fixed pivot, said first and second clamps are disposed opposite to each other, and a slot for engaging the L-shaped connecting tube is disposed on both opposite sides of the rocker button, and when one side of the rocker button is pressed, the two clamps of the dual-rocker clamping mechanism are driven to operate in a face-to-face manner to clamp the L-shaped connecting tube, and when the other side of the rocker button is pressed, the two clamps of the dual-rocker clamping mechanism are driven to operate in a back-to-face manner to release the L-shaped.

8. The occlusal force measuring instrument according to claim 1, wherein the signal processing unit comprises a charge amplifier, a temperature compensator, a low pass filter, an a/D converter connected in sequence, the charge amplifier is connected with the piezoelectric thin film sensor, and the a/D converter is connected with the single chip microcomputer; and an indicator light, a display screen and an electrifying switch are arranged on the outer side of the measuring instrument main body, and the display screen is connected with the single chip microcomputer.

9. The occlusal force measuring instrument according to claim 1, wherein the measuring instrument body has a spindle shape in its outer shape, and has an internal cavity to accommodate the signal processing unit and the single chip microcomputer.

10. A method for bite force detection using a bite force measuring instrument according to any of claims 1-9, comprising the steps of:

opening the upper and lower occlusion pads at the occlusion end, fixing the piezoelectric film sensor between the two occlusion pads, closing the two occlusion pads, and inserting and fixing the L-shaped connecting pipe into the measuring instrument main body;

the L-shaped connecting pipe extends into the mouth of a tested person along the outer side of the dentition of the tested person, so that the occlusion pad is arranged above a single crown of a lower jaw to be measured, the occlusion pad deforms under the action of occlusion force, and a voltage signal is transmitted to the single chip microcomputer through the signal processing unit after the piezoelectric film sensor is stressed;

the single chip microcomputer converts the voltage signal into an occlusal force numerical value to generate an occlusal force oscillogram, and transmits the occlusal force numerical value and the occlusal force oscillogram to an upper computer for evaluating the occlusal ability of the testee;

and disassembling the L-shaped connecting pipe, taking out the piezoelectric film sensor, and sterilizing the L-shaped connecting pipe and the occlusion pad.

Technical Field

The disclosure belongs to the technical field of oral tooth occlusal force detection, and particularly relates to a high-precision occlusal force measuring instrument and method based on single chip microcomputer control.

Background

The occlusal force refers to the chewing pressure generated by the contraction of masticatory muscles when upper and lower jaw teeth are in contact, is an important mark reflecting the oral and jaw chewing system, and is widely applied to evaluation indexes of postoperative chewing function recovery of diseases such as bruxism, mandibular joint disorder, surgical treatment and the like. The occlusal force analysis has important significance in the field of oral medicine research, and the determination of the occlusal force is helpful for understanding the functional condition of the oral and jaw system and the health condition of tissues such as tooth bodies, periodontal tissues, masticatory muscles and the like, and is a common objective evaluation index for oral restoration and orthodontic treatment. Therefore, when measuring the occlusal force of a single tooth, the occlusal end can easily reach the designated position, and the occlusion of the adjacent tooth is not influenced, which is very important, and meanwhile, the signal output by the sensor can effectively avoid the disturbance of external electromagnetic waves and the self power frequency of the human body, and an accurate feedback value can be obtained. However, the inventor finds that the currently commonly used occlusal force measuring instrument has a deficiency in accurately positioning and avoiding electromagnetic interference when measuring the occlusal force of a single tooth.

The existing patent related to an occlusal force measuring device, such as the patent with the publication number of CN105030259A, adopts a resistance strain type measuring instrument, utilizes the deformation of a cantilever support due to the occlusal force to change the resistance of a resistance strain gauge so as to measure the occlusal force, but because the thickness of the cantilever support with a hemispherical convex surface is larger, the normal occlusion process is disturbed, the occlusion end cannot be detached and replaced and sterilized at high temperature, the deformation amount for long-term use is large, the measuring result is not accurate enough, and meanwhile, the rectangular holding hand feeling of the measuring instrument body is not good; for example, in the patent with publication number CN106974665A, the occlusion end is designed as an air bag with a certain initial air pressure, and the corresponding relationship between the air pressure difference of the air bag and the occlusion force is established by detecting the initial air pressure value inside the air bag and the air pressure inside the air bag under different external pressures, but the error caused by the air expansion inside the air bag due to the oral cavity temperature during measurement is not considered, and meanwhile, the air bag has a large volume, which affects the chewing muscle force of the patient and also causes the interference of the occlusion of the adjacent teeth; for example, in the patent with publication number CN105686838A, the bite end and the body of the measuring instrument are designed to be in a straight line, in practical application, the measuring instrument needs to be extended into the oral cavity from the side edge of the oral cavity to avoid the bite interference of the adjacent teeth to the cantilever, which increases the operation difficulty in clinic, and meanwhile, the electrical signal output by the resistance strain sensor is not amplified and filtered, so that there are many interference signals, and the measurement result is not accurate enough.

Disclosure of Invention

The present disclosure aims to overcome the above disadvantages of the prior art, and provides a high-precision bite force measuring instrument and method based on single chip microcomputer control; the measuring instrument adopts the piezoelectric film sensor, improves the comfort level of occlusion and the accuracy of measuring results, and can avoid occlusion interference of adjacent teeth during occlusion by arranging the L-shaped connecting pipe.

The first invention of this disclosure is to propose a high-precision occlusal force measuring instrument based on single chip microcomputer control, in order to achieve the above-mentioned purpose, this disclosure adopts the following technical scheme:

the utility model provides a high accuracy interlock power measuring apparatu based on single chip microcomputer control, includes the measuring apparatu main part, and the measuring apparatu main part passes through L type connecting pipe and interlock end connection, L type connecting pipe and measuring apparatu main part plug-in connection, the interlock end is including relative two interlock pads that set up from top to bottom, the removable piezoelectric film sensor of centre gripping between two interlock pads, and piezoelectric film sensor is connected with signal processing unit, and signal processing unit and single chip microcomputer are connected, and the single chip microcomputer converts piezoelectric film sensor's voltage signal into interlock power numerical value.

As a further technical scheme, the two occlusion pads are connected through a buckle, and the outer end surfaces of the occlusion pads are arc-surface-shaped.

As a further technical scheme, the top of the upper occlusion pad of the occlusion end is higher than the top wall of the L-shaped connecting pipe, and the bottom of the lower occlusion pad of the occlusion end is lower than the bottom wall of the L-shaped connecting pipe.

As a further technical scheme, the L-shaped connecting pipe is a hollow pipeline, and the longitudinal section of the L-shaped connecting pipe is oval.

As a further technical scheme, the L-shaped connecting pipe is detachably connected with the measuring instrument main body, a mechanical switch is arranged on the outer side of the measuring instrument main body, and the L-shaped connecting pipe is clamped or loosened by the mechanical switch.

As a further technical scheme, mechanical switch is including setting up in the wane button in the measuring apparatu main part outside, and the wane button is connected with the inside double-rocker clamping mechanism who arranges the measuring apparatu main part in, double-rocker clamping mechanism includes first connecting rod and second connecting rod, and first connecting rod, second connecting rod are connected respectively in wane button both sides, and first connecting rod bottom is articulated with first anchor clamps, and first anchor clamps still are through first pivot and measuring apparatu main part fixed connection, and second connecting rod bottom is articulated with second anchor clamps, and second anchor clamps still are through second pivot and measuring apparatu main part fixed connection.

As a further technical scheme, rocker button middle part is connected through fixed rotating shaft and measuring apparatu main part are articulated, first anchor clamps and second anchor clamps set up relatively, and but the two opposite side all sets up the draw-in groove of block L type connecting pipe, press rocker button one side can drive two anchor clamps of double-rocker clamping mechanism and press from both sides tight L type connecting pipe towards the function, press rocker button opposite side can drive two anchor clamps of double-rocker clamping mechanism and operate dorsad and loosen L type connecting pipe.

As a further technical scheme, the signal processing unit comprises a charge amplifier, a temperature compensator, a low-pass filter and an A/D converter which are sequentially connected, the charge amplifier is connected with the piezoelectric film sensor, and the A/D converter is connected with the single chip microcomputer.

As a further technical scheme, an indicator lamp, a display screen and an electrifying switch are arranged on the outer side of the measuring instrument main body, and the display screen is connected with the single chip microcomputer.

As a further technical scheme, the appearance of the measuring instrument main body is in a spindle shape, and the measuring instrument main body is provided with an internal cavity for accommodating the signal processing unit and the single chip microcomputer.

A second object of the present disclosure is to provide a method for bite force detection using the bite force measuring instrument, which includes the following steps:

opening the upper and lower occlusion pads at the occlusion end, fixing the piezoelectric film sensor between the two occlusion pads, closing the two occlusion pads, and inserting and fixing the L-shaped connecting pipe into the measuring instrument main body;

the L-shaped connecting pipe extends into the mouth of a tested person along the outer side of the dentition of the tested person, so that the occlusion pad is arranged above a single crown of a lower jaw to be measured, the occlusion pad deforms under the action of occlusion force, and a voltage signal is transmitted to the single chip microcomputer through the signal processing unit after the piezoelectric film sensor is stressed;

the single chip microcomputer converts the voltage signal into an occlusal force numerical value to generate an occlusal force oscillogram, and transmits the occlusal force numerical value and the occlusal force oscillogram to an upper computer for evaluating the occlusal ability of the testee;

and disassembling the L-shaped connecting pipe, taking out the piezoelectric film sensor, and sterilizing the L-shaped connecting pipe and the occlusion pad.

The beneficial effect of this disclosure does:

the utility model discloses an interlock power measuring apparatu adopts piezoelectric film sensor, reduces the thickness of interlock grinding apparatus, increases the comfort level and the accuracy nature of interlock.

The occlusal force measuring instrument disclosed adopts the connecting pipe of "L" type design, can directly stretch into along the dentition and can accurately reach the assigned position in the testing process, has avoided the occlusion interference of neighbouring tooth during the interlock.

According to the occlusal force measuring instrument, the spindle-shaped shell which accords with human engineering is adopted as the measuring instrument main body, so that the holding comfort level can be increased.

This disclosed occlusal force measuring apparatu, with display screen and pilot lamp setting keep away from the measuring end at the measuring apparatu main part, can show occlusal force measuring numerical value and oscillogram in real time, remove the loaded down with trivial details of connecting computer display from.

The measuring instrument for the occlusal force is simple in structure, and the measuring end is convenient to disassemble for high-temperature disinfection.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

Fig. 1 is a schematic structural view of an occlusion force measuring instrument;

fig. 2 is a schematic diagram of an application of the bite force measuring instrument;

fig. 3 is a front view of the bite force measuring instrument;

fig. 4 is a schematic diagram of a cavity distribution of the bite force measuring instrument;

FIG. 5 is a connection diagram of the signal processing unit of the bite force measuring instrument with the single chip microcomputer and the piezoelectric film sensor;

FIG. 6 is an enlarged schematic view of the mechanical switch;

in the figure, 1, a bite pad; 2. a piezoelectric thin film sensor; 3. an L-shaped connecting pipe; 4. a meter body; 5. a mechanical switch; 6. a charge amplifier; 7. a temperature compensator; 8. a low-pass filter; 9. an A/D converter; 10. a single chip microcomputer; 11. an indicator light; 12. a display screen; 13. a rocker button; 14. fixing the rotating shaft; 15. the device comprises a first connecting rod 16, a second connecting rod 17, a first rotating shaft 18, a second rotating shaft 19, a first clamp 20 and a second clamp.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;

for convenience of description, the words "up", "down", "left" and "right" in this disclosure, if any, merely indicate correspondence with up, down, left and right directions of the drawings themselves, and do not limit the structure, but merely facilitate description of the disclosure and simplify description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the disclosure.

As introduced in the background art, the inventor finds that the existing commonly used occlusal force measuring instrument has defects in the aspects of accurate positioning and electromagnetic interference avoidance when measuring the occlusal force of a single tooth, and in order to solve the technical problems, the application provides a high-precision occlusal force measuring instrument and method based on single chip microcomputer control.

The application provides a high accuracy interlock power measuring apparatu based on single chip microcomputer control, including the measuring apparatu main part, the measuring apparatu main part passes through L type connecting pipe and is connected with the interlock end, L type connecting pipe and measuring apparatu main part plug-in connection, the interlock end is including relative two interlock pads that set up from top to bottom, the removable piezoelectric film sensor of centre gripping between two interlock pads, and piezoelectric film sensor is connected with signal processing unit, and signal processing unit and single chip microcomputer are connected, and the single chip microcomputer converts piezoelectric film sensor's voltage signal into interlock power numerical value.