CN217111269U - Three-dimensional pressure measuring device - Google Patents
Three-dimensional pressure measuring device Download PDFInfo
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- CN217111269U CN217111269U CN202220289695.XU CN202220289695U CN217111269U CN 217111269 U CN217111269 U CN 217111269U CN 202220289695 U CN202220289695 U CN 202220289695U CN 217111269 U CN217111269 U CN 217111269U
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Abstract
The application relates to the technical field of pressure measurement, in particular to a three-dimensional pressure measurement device. The three-dimensional pressure measuring device comprises a force application hemispherical component, a pressure sensing component and a force guide component, wherein the bottom of the force application hemispherical component is a plane, the top of the force application hemispherical component protrudes upwards, the pressure sensing component is arranged below the force application hemispherical component, the force guide component is arranged between the force application hemispherical component and the pressure sensing component, one end of the force guide component is connected with the force application hemispherical component, and the other end of the force guide component is connected with the pressure sensing component. The application utilizes the hemispherical structure to decouple the whole model, can simultaneously realize the advantages of small volume and flexible material manufacturing, and can also realize the sensing array form of multi-point measurement in a plane by measuring the portable three-dimensional pressure.
Description
Technical Field
The application relates to the technical field of pressure measurement, in particular to a three-dimensional pressure measurement device.
Background
With the development of intelligent sensing and communication technologies, intelligent wearable devices have been widely applied to human motion tracking and environmental perception and interaction, and the like, wherein the intelligent shoe pads, intelligent shoes, intelligent seat cushions and the like are also developed endlessly and additional functions are increasingly expanded.
Many common force sensors in life measure forces in a single direction, such as common cantilever beam electronic scales, extensometers, and the like, and the sensors internally resolve three-dimensional forces from space into one-dimensional forces through a certain mechanical structure. Three-dimensional force, namely three pairs of perpendicular force components in a cartesian coordinate system, is usually applied and is expressed by the relation between the direction and the magnitude of one force in space, the directions of the three forces are artificially specified, and the magnitudes of the forces in the three directions need to be measured.
The inter-dimensional coupling of the sensor means that when the sensor measures multi-dimensional force and force is applied to one dimension independently, the interference of the force application dimension on other dimensions of the sensor is large. The main task of a sensor is to acquire and output the forces in all dimensions actually applied to the sensor, and to approximate the actual values as close as possible. In real life, however, there is no perfect sensor. Such sensors are limited by volume and process requirements, and often have a trade-off in terms of accuracy, cost, volume and the like, so that the value of the measurement output always has an error from the true value, and therefore, the key point of the measurement of the oblique applied force is to minimize the inter-dimensional coupling between the sensors and to make the output signal of the sensors as close to the true value as possible.
The definition of the oblique applied force is that on the plane where two objects contact, since the objects have a sideslip component, a pair of equal and opposite forces are generated, in the cartesian coordinate system, the force defining the normal direction is Fz, and the oblique applied force can be synthesized by the force components in the two directions Fx and Fy. The insole sole (or cushion) sensor and the touch sensor are mainly applied in the scene, the insole sole (or cushion) sensor and the touch sensor are mainly used for measuring the force in the normal direction and the shearing force direction of the sole during walking, and the sole health condition is analyzed through a certain algorithm (work of an algorithm group) and an array structure, so that a pathological analysis result is obtained. The touch sensor is arranged in a finger of the mechanical arm, and the state of the mechanical arm for grabbing the object can be known in real time by measuring the shearing force, so that the control is performed. According to the application scene, a three-dimensional force sensor which is small in size, light in weight and structurally made of flexible materials needs to be designed, and the size of inclined applied force is decoupled from the three-dimensional force sensor so as to achieve applications such as flexible wearable performance, man-machine interaction and robot precision measurement.
SUMMERY OF THE UTILITY MODEL
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and drawings.
The utility model aims to overcome the aforesaid not enough, provide a three-dimensional pressure measurement device, utilized hemisphere structure to carry out whole model decoupling zero, can realize the advantage of small volume and with flexible material preparation simultaneously, portable three-dimensional pressure's measurement can also realize the sensing array form of many point measurements in the plane.
The application provides a three-dimensional pressure measurement device. The three-dimensional pressure measuring device comprises a force application hemispherical component, a pressure sensing component and a force guide component, wherein the bottom of the force application hemispherical component is a plane, and the top of the force application hemispherical component is upwards convex; the pressure sensing part is arranged below the force application hemispherical part; the force guide component is arranged between the force application hemispherical component and the pressure sensing component, one end of the force guide component is connected with the force application hemispherical component, and the other end of the force guide component is connected with the pressure sensing component.
The pressure sensing part carries out corresponding signal output through the transmitted applied force so as to measure the pressure.
In some embodiments, the pressure sensing component includes a plurality of pressure sensors distributed in an annular equidistant array, and the pressure sensors output signals, wherein the pressure sensors adopt a flexible circuit board as the signal output.
In some embodiments, the pressure sensor is a piezoresistive pressure sensor, a capacitive pressure sensor, an inductive pressure sensor, or a piezoelectric pressure sensor.
In some embodiments, the force-guiding component comprises a plurality of force-guiding columns arranged in an annular and equidistant array for force transmission.
In some embodiments, the force-transmitting pillars are in one-to-one correspondence with the pressure sensors, facilitating force transmission.
In some embodiments, the center point of the force-transmitting pillar corresponds to the center point of the pressure sensor, facilitating force transmission.
In some embodiments, the force applying hemispherical member is hemispherical to increase compression comfort.
In some embodiments, the force applying hemispherical member is a semi-ellipsoid.
In some embodiments, the force applying hemispherical component and the force guiding component are integrally connected, so that measurement errors are avoided.
In some embodiments, each force guiding column is integrally connected with the force application hemispherical component, so that measurement errors are avoided.
In some embodiments, the Shore A hardness of the force application hemispherical component is 0-40, so that the force application hemispherical component is prevented from being too hard and losing softness.
In some embodiments, the force applying hemispherical member is made of a flexible elastic material, which increases the flexibility.
Through adopting foretell technical scheme, the beneficial effect of this application is:
1. the application utilizes the hemispherical structure to decouple the whole model, can simultaneously realize the advantages of small volume and flexible material manufacturing, and can also realize the sensing array form of multi-point measurement in a plane by measuring the portable three-dimensional pressure.
2. This application can arrange a plurality of devices in order to realize the three-dimensional power measurement of multiple spot in certain region, and then can realize wearable pressure distribution measuring equipment such as intelligent cushion, intelligent shoe-pad.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Clearly, such objects and other objects of the present application will become more apparent after a detailed description of the preferred embodiments thereof as illustrated in the various figures and drawings.
These and other objects, features and advantages of the present application will become more apparent from the following detailed description of one or more preferred embodiments, which is to be read in connection with the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application and not to limit the application.
In the drawings, like parts are designated with like reference numerals, and the drawings are schematic and not necessarily drawn to scale.
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only one or several embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to such drawings without creative efforts.
FIG. 1 is a first schematic structural view of a three-dimensional pressure measurement device according to some embodiments of the present disclosure;
fig. 2 is a schematic structural diagram of a three-dimensional pressure measurement device according to some embodiments of the present disclosure.
Description of the main reference numerals:
1. a force application hemispherical member;
2. a force-guiding member;
3. a pressure sensing component.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail with reference to the following detailed description. It should be understood that the detailed description and specific examples, while indicating the present application, are given by way of illustration only.
In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; either directly or indirectly through intervening media, either internally or in any other relationship. However, the direct connection means that the two bodies are not connected through a transition structure, but are connected through a connection structure to form a whole. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a three-dimensional pressure measurement device in some embodiments of the present application.
According to some embodiments of the present application, there is provided a three-dimensional pressure measurement device. A three-dimensional pressure measuring device comprises a force application hemispherical component 1, a pressure sensing component 2 and a force guide component 3, wherein the bottom of the force application hemispherical component 1 is a plane, and the top of the force application hemispherical component 1 is upwards convex; the pressure sensing part 3 is arranged below the force application hemispherical part 1; the force guide component 2 is arranged between the force application hemispherical component 1 and the pressure sensing component 3, and one end of the force guide component 2 is connected with the force application hemispherical component 1; the other end of the force guide part 2 is connected with the pressure sensing part 3, wherein, the three-dimensional pressure measuring device adopts 3 or 4 and more pressure sensors.
The force application hemispherical component 1 is a force application hemisphere, and the force guide component 2 is made of silicone rubber (mSiO 2. nH2O) with the Shore hardness of 0, and is formed by heating and reverse molding through a mold or 3D printing. And V-1510 soft glue is adopted between the force guide component 2 and the pressure sensing component 3. The pressure sensor in the pressure sensing component 3 is an FSR pressure sensor, the pressure sensor is provided with FSR sensing contacts, an FPC (flexible printed circuit) is used as a base material of the FSR sensor, signals of a plurality of paths of sensors are led out through routing, the three-dimensional pressure measuring device adopts 3 or more than 4 pressure sensing components 3, downward force is applied to the force application hemispherical component 1, the applied force is transmitted to the pressure sensing components 3 through the force guide component 2, and the pressure sensing components 3 perform corresponding signal output through the transmitted applied force to measure the pressure.
According to some embodiments of the present application, optionally, the pressure sensing component 3 includes a plurality of pressure sensors distributed in an annular equidistant array, and the pressure sensors output signals through the pressure sensors, wherein the pressure sensors use a flexible circuit board as the signal output.
According to some embodiments of the application, optionally, the pressure sensor is a piezoresistive pressure sensor, a capacitive pressure sensor, an inductive pressure sensor or a piezoelectric pressure sensor.
According to some embodiments of the present application, the force guiding component 2 optionally comprises a plurality of force guiding columns distributed in an annular and equidistant array for force transmission.
According to some embodiments of the present application, optionally, the force conducting pillars are in one-to-one correspondence with the pressure sensors, facilitating force conduction.
According to some embodiments of the present application, optionally, a center point of the force conducting pillar corresponds to a center point of the pressure sensor, facilitating force conduction.
According to some embodiments of the present application, the force applying hemispherical member 1 is optionally hemispherical to increase the comfort of compression.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a three-dimensional pressure measurement device in some embodiments of the present application.
According to some embodiments of the present application, optionally, the force applying hemispherical member 1 is in the shape of a semi-ellipsoid.
According to some embodiments of the present application, optionally, the force applying hemispherical member 1 and the force guiding member 2 are integrally connected, so as to avoid measurement errors.
According to some embodiments of the present application, optionally, each of the force guiding columns is integrally connected to the force applying hemispherical member 1, so as to avoid measurement errors.
According to some embodiments of the present application, optionally, the shore a hardness of the force application hemispherical member 1 is 0 to 40, so as to avoid that the force application hemispherical member 1 is too hard and loses softness.
According to some embodiments of the present application, the material of the force applying hemispherical component 1 is optionally a flexible elastic material, which increases the flexibility accordingly.
It is to be understood that the embodiments disclosed herein are not limited to the particular process steps or materials disclosed herein, but rather, are extended to equivalents thereof as would be understood by those of ordinary skill in the relevant art. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting.
Reference in the specification to "an embodiment" means that a particular feature, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Thus, the appearances of the phrase or "an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment.
Furthermore, the described features or characteristics may be combined in any other suitable manner in one or more embodiments. In the above description, certain specific details are provided, such as thicknesses, amounts, etc., to provide a thorough understanding of embodiments of the present application. One skilled in the relevant art will recognize, however, that the application can be practiced without one or more of the specific details, or with other methods, components, materials, etc.
Claims (12)
1. A three-dimensional pressure measurement device, comprising:
the bottom of the force application hemispherical component is a plane, and the top of the force application hemispherical component is upwards convex;
a pressure sensing member disposed below the force application hemispherical member;
and the force guide component is arranged between the force application hemispherical component and the pressure sensing component, one end of the force guide component is connected with the force application hemispherical component, and the other end of the force guide component is connected with the pressure sensing component.
2. The three-dimensional pressure measuring device of claim 1, wherein the pressure sensing member comprises a plurality of pressure sensors arranged in an annular equidistant array.
3. The three-dimensional pressure measurement device of claim 2, wherein the pressure sensor is a piezoresistive pressure sensor, a capacitive pressure sensor, an inductive pressure sensor, or a piezoelectric pressure sensor.
4. The three-dimensional pressure measuring device according to any one of claims 1 to 3, wherein the force guide member comprises a plurality of force guide columns arranged in an annular equidistant array.
5. The three-dimensional pressure measuring device of claim 2, wherein the force-guiding columns correspond to the pressure sensors one-to-one.
6. The three-dimensional pressure measuring device of claim 5, wherein the center point of the force-guiding pillar corresponds to the center point of the pressure sensor.
7. The three dimensional pressure measurement device of claim 1, wherein the force applying hemispherical member is hemispherical.
8. The three dimensional pressure measurement device of claim 1, wherein the force applying hemispherical member is in the form of a semi-ellipsoid.
9. The three-dimensional pressure measuring device of claim 1, wherein the force applying hemispherical member and the force guiding member are integrally connected.
10. The three-dimensional pressure measuring device of claim 4, wherein each force-guiding column is integrally connected to the force-applying hemispherical member.
11. The three-dimensional pressure measuring device according to claim 1, wherein the force applying hemispherical member has a Shore A hardness of 0 to 40.
12. The three-dimensional pressure measuring device of claim 1, wherein the force applying hemispherical member is made of a flexible and elastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220289695.XU CN217111269U (en) | 2022-02-14 | 2022-02-14 | Three-dimensional pressure measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220289695.XU CN217111269U (en) | 2022-02-14 | 2022-02-14 | Three-dimensional pressure measuring device |
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| Publication Number | Publication Date |
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| CN217111269U true CN217111269U (en) | 2022-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220289695.XU Active CN217111269U (en) | 2022-02-14 | 2022-02-14 | Three-dimensional pressure measuring device |
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| CN (1) | CN217111269U (en) |
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