Bite force measuring device

Abstract

The present invention discloses a bite force measurement device, which relates to the field of bite force detection, and includes a control terminal and at least one bite force sensing unit; the bite force sensing unit includes a sensing body and a sensing head connected to the sensing body, the sensing head is provided with at least one hollow part, and the hollow part is provided with a pressure measuring unit; when an animal bites at the position of the hollow part, the pressure measuring unit measures the bite force data; the control terminal is connected to the bite force sensing unit by an electrical signal to receive the bite force data, and evaluate the bite force of the animal according to the bite force data. The bite force measurement device provided by the present invention can improve the adaptability of bite force measurement for animals of different body sizes.

Description

Technical Field

[0001] The invention relates to the field of bite force detection, and in particular to a bite force measuring device. Background Art

[0002] In order to judge the oral health of animals, it is necessary to detect the bite conditions of animals. Since dogs and other animals are lively and active and cannot communicate, it is difficult to measure their actual bite force. Therefore, the theoretical limit of their bite force is usually calculated by simulation. However, the simulation method has a weak basis, and the numerical error of the animal's bite force is very large, making it difficult to accurately judge the oral health of the animal. Existing bite force measurement devices are usually only suitable for small animals or large animals, and cannot be used for bite force measurement of animals of different sizes at the same time. In addition, there are problems such as inaccurate control of the bite position during the measurement process, low accuracy of the measurement data, and large data deviation. Problems such as the willingness of the animal to cooperate during the measurement process are also important factors affecting the bite force measurement.

[0003] Therefore, it is necessary to propose a new bite force measurement device to improve the adaptability of bite force measurement for animals of different body sizes. Summary of the invention

[0004] The purpose of the present invention is to provide a bite force measurement device, which can improve the adaptability of bite force measurement for animals of different body sizes.

[0005] The technical solution of the present invention is: a bite force measurement device, comprising a control terminal and at least one bite force sensing unit;

[0006] The bite force sensing unit includes a sensing body and a sensing head connected to the sensing body, the sensing head is provided with at least one hollow part, and the hollow part is provided with a pressure measuring unit; when the animal bites at the position of the hollow part, the pressure measuring unit measures the bite force data;

[0007] The control terminal is connected to the bite force sensing unit by electrical signals to receive the bite force data, and performs data correction based on the bite force magnitude and bite position to obtain the real bite force data.

[0008] Thereby, the bite force of the animal is assessed based on the bite force data.

[0009] Optionally, the pressure measuring unit adopts a piezoelectric pressure sensor.

[0010] Optionally, a cover is provided on a side of the pressure measuring unit away from the sensing head, and a gap is provided between the cover and a surface of the sensing head; and an area of ​​the cover is not less than an area of ​​the hollow portion.

[0011] Optionally, the sensing head is a cylinder, and the hollow portion is located on a peripheral surface of the sensing head.

[0012] Optionally, a plurality of the hollow portions are staggeredly distributed, and a ratio of an area of ​​the hollow portion to an area of ​​a circumferential surface of the cylinder is in a range of 0.5-0.9.

[0013] Optionally, a hollow hole is provided inside the sensing head, and the hollow hole is used to pass a wire connecting the pressure measuring unit and the sensing body and / or the control terminal.

[0014] Optionally, an attractant glue layer is further provided on the outer surface of the sensing head.

[0015] Optionally, the attractant glue layer is movably mounted on the outer surface of the sensing head via an attractant glue fixing mechanism; the attractant glue fixing mechanism includes a threaded fixing structure or a snap-fit ​​structure.

[0016] Optionally, an adjustment structure is provided in the sensing body, and the adjustment structure is connected to the sensing head to adjust the telescopic length of the sensing head.

[0017] Optionally, a power storage device is provided in the sensing body, and an interface is installed on the sensing body for connecting a power source and / or the control terminal to provide electric energy for the power storage device.

[0018] A bite force measurement device provided by the present invention includes a control terminal and at least one bite force sensing unit, the bite force sensing unit includes a sensing body and a sensing head connected to the sensing body; at least one hollow portion is provided on the sensing head, and a pressure measuring unit is provided in the hollow portion. When an animal bites at the position of the hollow portion, the pressure measuring unit measures the bite force data, and the data is then processed through the control terminal to evaluate the bite force of the animal.

[0019] The present invention provides a bite force measuring device, wherein at least one hollow portion is provided on the sensing head and a pressure measuring unit is provided in each hollow portion, so that the device can be applied to the bite force measurement of animals of different sizes, thereby solving the problem that the prior art can only be applied to animals of the same size. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1A schematic structural diagram of a bite force measurement device provided by an embodiment of the present invention;

[0022] Figure 2 Based on Figure 1 A schematic structural diagram of a sensor head of a bite force measuring device shown;

[0023] Figure 3 Based on Figure 1 A schematic structural diagram of a sensor head of a bite force measuring device shown;

[0024] Figure 4 Based on Figure 3 A schematic cross-sectional view of the sensor head taken along line AA is shown;

[0025] Figure 5 It is a cross-sectional schematic diagram of a sensing head in another embodiment. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] like Figure 1-Figure 3 As shown, a bite force measuring device provided by the present invention generally includes a control terminal 1 and at least one bite force sensing unit 2. The bite force sensing unit 2 includes a sensing body 3 and a sensing head 4. The sensing head 4 is connected to the sensing body 3. At least one hollow portion 41 is provided on the sensing head 4. A pressure measuring unit 42 is provided in the hollow portion 41. When the animal bites at the hollow portion 41 of the sensing head 4, the pressure measuring unit 42 is pressurized and generates a force signal (such as a voltage signal, a current signal, a magnetic field signal, etc.), so that the pressure measuring unit 42 measures and obtains bite force data. The control terminal 1 is electrically connected to the bite force sensing unit 2. The control terminal 1 can receive the bite force data measured by the pressure measuring unit 42, and evaluate the bite force of the animal based on the bite force data.

[0028] Preferably, the bite force data includes the bite force magnitude and the bite position, wherein the bite force magnitude is measured by the pressure measuring unit 42, and the bite position is determined by the position of the pressure measuring unit 42. After receiving the bite force data measured by the pressure measuring unit 42, the control terminal 1 performs data correction based on the bite force magnitude and the bite position to obtain the real bite force data, thereby being able to accurately evaluate the bite force magnitude of the animal based on the bite force data, solving the problem of large deviation of the bite force data.

[0029] Specifically, the control terminal 1 is a terminal integrated with a data processing device and a data display device. For example, the control terminal 1 can be a processor, a computer device, etc. The data processing device includes a single-chip microcomputer, an A / D converter, a low-pass filter and a charge amplifier; the data display device includes a display screen, etc. In a specific embodiment, after receiving the bite force data (i.e., the force signal generated by the pressure measurement unit 42 under pressure, such as a voltage signal, a current signal, a magnetic field signal, etc.), the charge amplifier amplifies the weak voltage signal output by the piezoelectric sensor sheet and converts it into a voltage signal that can be measured by the device. Among them, the low-pass filter is used to eliminate external electromagnetic wave interference, and outputs a clean voltage signal after filtering by the filter circuit; the clean voltage signal is output to the A / D converter, and the analog electrical signal is converted into a digital signal that can be recognized by the control terminal 1. The single-chip microcomputer is used to convert the input digital signal through a formula to obtain the bite force data, and transmit it to the data display device, and display the bite force data on the display screen. It should be understood that the control terminal 1 is not limited to the above-mentioned device, and it can be a data processing system or device well known to those skilled in the art, and its purpose is to process and analyze the bite force data measured by the pressure measurement unit 42 to evaluate the bite force.

[0030] The bite force sensing unit 2 includes a sensing body 3 and a sensing head 4. Figure 2-4 As shown, at least one hollow portion 41 is provided on the sensing head 4. In an optional embodiment, the sensing head 4 is cylindrical in shape to be more suitable for the bite force of the animal. The hollow portion 41 is located on the peripheral surface of the sensing head 4. A pressure measuring unit 42 is provided in each hollow portion 41.

[0031] Optionally, the pressure measuring unit 42 uses a piezoelectric pressure sensor. A piezoelectric pressure sensor converts the measured pressure into an electrical signal using the piezoelectric effect of a piezoelectric material. When a piezoelectric element made of a piezoelectric material is subjected to pressure, the amount of charge generated is linearly related to the force applied. By measuring the amount of charge, the magnitude of the measured pressure can be known. The piezoelectric pressure sensor can be a diaphragm type or a piston type pressure sensor. Figure 4As shown, taking the diaphragm piezoelectric pressure sensor as an example, it is mainly composed of a body, a diaphragm and a piezoelectric element. When the diaphragm piezoelectric pressure sensor is arranged in the hollow part 41, the body of the diaphragm piezoelectric pressure sensor is located at the bottom of the hollow part 41, and the diaphragm is located at the notch of the hollow part 41, and basically covers the notch of the hollow part 41. By arranging a plurality of hollow parts 41 and a plurality of pressure measuring units 42 on the peripheral surface of the sensing head 4, the diaphragm of the diaphragm piezoelectric pressure sensor can cover most of the peripheral surface of the sensing head 4. When measuring the bite force of an animal, the teeth of the animal bite on the diaphragm of the diaphragm piezoelectric pressure sensor, and the diaphragm is pressed down by force, which acts on the piezoelectric element of the diaphragm piezoelectric pressure sensor to generate an electrical signal, thereby measuring the bite force data. Then, the control terminal 1 is used to process and analyze the data, and the bite force of the animal can be evaluated.

[0032] The number of the hollow part 41 can be one or more. When the number of the hollow part 41 is one, the surface of the pressure measuring unit 42 can be designed to be an arc shape adapted to the peripheral surface of the sensing head 4, so that it can have a larger area and be more easily bitten by animals, thereby facilitating measurement. Figure 2 and 3 As shown, when there are multiple hollow parts 41, several hollow parts 41 are staggered so that the hollow parts 41 occupy as much area of ​​the peripheral side surface of the sensing head 4 (cylinder) as possible, making it easy for animals to bite, thereby facilitating measurement. Optionally, the ratio of the area of ​​the hollow part 41 to the area of ​​the peripheral side surface of the sensing head 4 (cylinder) is in the range of 0.5-0.9.

[0033] In a preferred embodiment, Figure 5 As shown, a cover 43 is provided on the side of the pressure measuring unit 42 away from the sensing head 4. There is a gap between the cover 43 and the surface of the sensing head 4, and the cover 43 covers the notch of the hollow part 41, and the area of ​​the cover 43 is not less than the area of ​​the hollow part 41. The provision of the cover 43 can protect the pressure measuring unit 42, and can increase the force measurement area of ​​the pressure measuring unit 42, so that when in use, it is easier for animals to bite, thereby facilitating measurement. Optionally, the shape of the cover 43 can be an arc-shaped piece adapted to the peripheral surface of the sensing head 4, and the peripheries of adjacent covers 43 fit each other, so as to avoid large-area exposure of the peripheral surface of the sensing head 4.

[0034] The present invention provides a bite force measurement device, wherein a plurality of hollow parts 41 are provided on the sensing head 4, and a pressure measurement unit 42 is provided in each hollow part 41, so as to realize the measurement of the bite force of the animal. When the animal is small, its mouth and teeth are small, and the bite force is also weak. During measurement, the small animal can only bite a small number of pressure measurement units 42 (for example, 1-4). Then, the control terminal 1 is used to process and analyze the data, and the bite force of the small animal can be evaluated. When the animal is large, its mouth and teeth are large, and the bite force is also strong. During measurement, the large animal can bite a large number of pressure measurement units 42 (for example, 4-10). Then, the control terminal 1 is used to process and analyze the data measured by the large number of pressure measurement units 42, and the bite force of the large animal can be evaluated. By using a larger number of pressure measuring units 42 to perform distributed force bearing and measurement on the bite force of large animals, the measurement accuracy can be improved and the problem of a single pressure measuring unit 42 having a small pressure tolerance range can be avoided.

[0035] In a specific embodiment, Figure 2-5 As shown in the figure, a hollow hole 44 is provided inside the sensing head 4. The hollow hole 44 is used to pass the wires connecting the pressure measuring unit 42 and the sensing body 3 and / or the control terminal 1. By hiding the wires inside the sensing head 4, the problem of easy damage caused by the exposed wires is avoided. It should be understood that the electrical signal connection between the sensing body 3 and the control terminal 1 can be a wired connection through a wire, or a wireless connection can be performed by setting a wireless communication module in the sensing body 3.

[0036] In a specific embodiment, the outer surface of the sensing head 4 is also provided with an attractant glue layer (not shown in the figure) to attract animals to bite the sensing head 4. Preferably, the attractant glue layer covers the outer surface of the sensing head 4, so as to induce the animal to bite the sensing head 4 vigorously, and the result of measuring the animal's bite force is more accurate. The attractant glue layer is movably mounted on the outer surface of the sensing head 4 through an attractant glue fixing mechanism, so as to facilitate adjustment of the relative position of the attractant glue layer and the sensing head 4 and replacement of the attractant glue layer after the attractant glue layer is damaged and fails due to multiple bites.

[0037] In a preferred embodiment, the attractant adhesive layer is arranged along the length direction of the sensing head 4, and the attractant adhesive fixing mechanism includes a threaded fixing structure or a buckle structure. The attractant adhesive layer is installed on the outer surface of the sensing head 4 by means of bolts or buckle structures. Exemplarily, an opening adapted to the screw is provided on the attractant adhesive layer, and at least two screw holes adapted to the screw are arranged along the axial direction of the sensing head 4, and the attractant adhesive layer is installed on the sensing head 4 by means of the screw, the opening, and the screw hole.

[0038] In a specific embodiment, an adjustment structure 5 and a power storage device 6 are provided in the sensing body 3. The adjustment structure 5 is connected to the sensing head 4 to adjust the telescopic length of the sensing head 4. The adjustment structure 5 can be a mechanical structure well known to those skilled in the art, such as a slide rail and slide table structure, a lead screw structure, an elastic member structure, etc. An interface (not shown in the figure) is installed on the sensing body. The interface is used to connect the power supply and / or the control terminal 1 to provide power to the power storage device 6.

[0039] The present invention provides a bite force measuring device, wherein at least one hollow portion is provided on the sensing head and a pressure measuring unit is provided in each hollow portion, so that the device can be applied to the bite force measurement of animals of different sizes, thereby solving the problem that the prior art can only be applied to animals of the same size.

[0040] The present invention provides a bite force measurement device, wherein a plurality of pressure measurement units are arranged on the sensing head, so that when measuring the bite force, the bite position of the animal during the biting process can be determined according to the position of the bitten pressure measurement unit. Thus, the bite force data of the plurality of bitten pressure measurement units can be corrected in combination with the bite position to obtain the real bite force data, which can improve the accuracy of the measured data, thereby solving the problem of large deviation of the bite force data.

[0041] Of course, the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any modifications made according to the spirit of the main technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A bite force measuring device, characterized in that: comprising a control terminal and at least one bite force sensing unit; The bite force sensing unit includes a sensing body and a sensing head connected to the sensing body, the sensing head is provided with at least one hollow part, and the hollow part is provided with a pressure measuring unit; when the animal bites at the position of the hollow part, the pressure measuring unit measures the bite force data; The control terminal is electrically connected to the bite force sensing unit to receive the bite force data and evaluate the bite force of the animal based on the bite force data; A cover is provided on one side of the pressure measuring unit away from the sensing head, and a gap exists between the cover and the surface of the sensing head; the area of ​​the cover is not less than the area of ​​the hollow part; The induction head is a cylinder, and the hollow portion is located on the peripheral surface of the induction head; A plurality of the hollow parts are staggeredly distributed, and the ratio of the area of ​​the hollow part to the area of ​​the circumferential surface of the cylinder is in the range of 0.5-0.9; A hollow hole is provided inside the sensing head, and the hollow hole is used to pass a wire connecting the pressure measuring unit and the sensing body and / or the control terminal; The outer surface of the induction head is also provided with an attractant glue layer; The attractant glue layer is movably mounted on the outer surface of the sensor head through an attractant glue fixing mechanism; the attractant glue fixing mechanism includes a threaded fixing structure or a buckle structure; An adjustment structure is provided in the sensing body, and the adjustment structure is connected to the sensing head to adjust the telescopic length of the sensing head.

2. The bite force measuring device according to claim 1, characterized in that: The pressure measuring unit adopts a piezoelectric pressure sensor.

3. The bite force measuring device according to claim 1, characterized in that: The induction body is provided with a power storage device, and the induction body is provided with an interface for connecting a power source and / or the control terminal to provide electric energy for the power storage device.

Images