CN113885092B - Explosion-proof soft touch sensor - Google Patents
Explosion-proof soft touch sensor Download PDFInfo
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- CN113885092B CN113885092B CN202110801830.4A CN202110801830A CN113885092B CN 113885092 B CN113885092 B CN 113885092B CN 202110801830 A CN202110801830 A CN 202110801830A CN 113885092 B CN113885092 B CN 113885092B
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- 229910002027 silica gel Inorganic materials 0.000 claims description 2
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
Abstract
The invention discloses an explosion-proof soft touch sensor, which comprises a soft membrane structure and a base, wherein the soft membrane structure comprises a soft membrane bulge and a soft membrane interface which are connected with each other; the base is fixed with the soft membrane interface, and a closed air cavity is formed between the base and the soft membrane bulge; the base is provided with a sensor; when the soft membrane bulge is in no touch during operation, the soft membrane bulge maintains the original shape; when the soft membrane bulge is subjected to external touch action, the soft membrane bulge deforms, so that the sensor detects pressure change of the closed air cavity or shape change of the inner surface of the soft membrane bulge, and the touch sensing and the touch specific condition analysis are realized. The invention can realize the integrated sensing and protection of touch feedback, buffering and touch state analysis, and is suitable for explosion-proof occasions such as coating.
Description
Technical Field
The invention relates to the technical field of touch sensors, in particular to an explosion-proof soft touch sensor.
Background
The touch sensor realizes the sensing of touch through detection of different principles, has wide application prospect in the fields of factories, detection, rescue, medical treatment, coating and the like, and can be divided into two main categories of contact type and non-contact type.
Touch sensors are typically provided by combining a spring with a circuit switch. After the touch happens, the spring is stretched or compressed, the switch is closed, and an electric signal is changed; after the touch is eliminated, the switch is reset under the action of the spring. The stroke of the touch sensor is smaller, only single-degree-of-freedom touch monitoring can be performed, and information such as the position and the posture of touch cannot be obtained.
The non-contact touch sensor generally adopts ultrasonic or laser as a medium to sense the approach of an object. However, in working environments such as spraying, the ultrasonic sensor has large interference and is difficult to work normally; laser sensors often have difficulty meeting explosion-proof conditions. The touch state analysis is realized by adopting the ultrasonic or laser sensor, a large number of sensors are needed to be used, the analysis difficulty is high, and the cost is high.
One problem with the above technology is how to implement integrated sensing and protection of touch feedback, buffering and touch state analysis for explosion-proof occasions such as painting.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide an explosion-proof soft touch sensor, which can realize integrated sensing and protection of touch feedback, buffering and touch state analysis, and is suitable for explosion-proof occasions such as coating.
According to an embodiment of the invention, an explosion-proof soft touch sensor comprises:
the flexible membrane structure is made of flexible materials and comprises flexible membrane protrusions and flexible membrane interfaces which are connected with each other;
the base is fixedly connected with the soft membrane interface, and a closed air cavity is formed between the base and the soft membrane bulge; the base is provided with a sensor;
when the soft membrane bulge is in no touch during operation, the soft membrane bulge maintains the original shape; when the soft membrane bulge is subjected to external touch action, the soft membrane bulge deforms, so that the sensor detects pressure change of the closed air cavity or shape change of the inner surface of the soft membrane bulge, and the touch sensing and the touch specific condition analysis are realized.
The explosion-proof soft touch sensor provided by the embodiment of the invention has the following advantages: first, because the soft membrane structure adopts flexible material to make for soft membrane arch produces deformation under the effect of touching, and then make the gas pressure in the closed air cavity change and make the bellied internal surface of sealing soft membrane change in shape, and then detect gas pressure through the sensor and change and seal bellied internal surface of soft membrane's shape change, for example, the sensor can be air pressure sensor, realizes quick touching feedback through air pressure sensing, and the sensor can also be vision device such as camera, can accurately analyze the position and the mode of touching, separation control after the touching can be established to the efficient. Secondly, because the soft membrane structure is made of flexible materials, the soft membrane structure can be reasonably designed, and the soft membrane protrusions corresponding to different working scenes can be selected according to different working scenes, so that long-distance, short-distance and large-range touch sensing can be realized. Thirdly, because the soft membrane structure is made of flexible materials and the closed air cavity is filled with positive pressure air, when the soft membrane bulge is acted by touch force, collision danger caused by the rigid sensor can be avoided, the soft membrane structure has a good buffering effect, and has good application potential in the aspect of man-machine fusion. Fourth, because the enclosed air cavity is filled with positive pressure gas, external dust gas cannot enter the enclosed air cavity, so that the explosion-proof soft touch sensor has an explosion-proof function, has outstanding explosion-proof performance, and can be applied to explosion-proof occasions such as coating. Fifth, the soft membrane structure is light and thin, the structure is simple, the cost performance is high.
According to some embodiments of the invention, the base includes a base body and a cover plate that clamp the soft membrane interface, the base body and the cover plate being fastened by fasteners.
According to some embodiments of the invention, the flexible material is a polymeric material or a silicone.
According to some embodiments of the invention, the soft film projections are in the shape of a solid of revolution, a planar prism, or a projection structure other than the solid of revolution and the planar prism.
According to some embodiments of the present invention, the soft membrane protrusions can support gravity and additional acceleration through their own elasticity and structure, so as to achieve the original shape maintenance without external force.
According to some embodiments of the present invention, when the soft membrane protrusion cannot support gravity and additional acceleration through its own elasticity and structure, and thus cannot maintain the original shape without external force, the base is provided with a one-way air valve, and the one-way air valve is used to enable ambient air to flow into the closed air cavity intelligently, so that the original shape maintenance of the soft membrane protrusion without external force is achieved through the pressure of the closed air cavity.
According to some embodiments of the invention, the sensor is a barometric sensor; when the explosion-proof soft touch sensor works, when the soft membrane bulge is subjected to external touch action, the soft membrane bulge deforms, and the air pressure sensor detects that the pressure of the closed air cavity is changed due to the deformation of the soft membrane bulge, so that the perception of external touch is realized.
According to some embodiments of the invention, the sensor is a camera, and the inner surface of the soft film protrusion is provided with specific optical characteristics; when the soft membrane bulge is subjected to external touch action, the soft membrane bulge deforms, so that the specific optical characteristic deforms, and the camera detects and captures the size and the direction of the deformation of the specific optical characteristic, so that the whole touch state is sensed and analyzed.
According to some embodiments of the invention, when the sensor is a barometric sensor, the explosion-proof soft touch sensor further comprises a sub-base, the sub-base is connected with the top of the soft membrane protrusion, the sub-base and the base are respectively used for being installed at different positions or different installation surfaces of the surface to be installed, and the soft membrane protrusion is bar-shaped and can be arranged around the rigid body.
According to some embodiments of the invention, the explosion-proof soft touch sensors are a plurality of, and the explosion-proof soft touch sensors are arranged in a circular, rectangular or hexagonal array.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic perspective view of an explosion-proof soft touch sensor according to an embodiment of the invention.
Fig. 2 is a cross-sectional view at A-A of fig. 1.
Fig. 3 is a schematic perspective view of an explosion-proof soft touch sensor according to a second embodiment of the invention.
Fig. 4 is a cross-sectional view at B-B of fig. 3.
Fig. 5 is a schematic perspective view of an explosion-proof soft touch sensor according to a third embodiment of the invention.
Fig. 6 is a cross-sectional view at C-C of fig. 5.
Fig. 7 is a schematic perspective view of an explosion-proof soft touch sensor according to a fourth embodiment of the invention.
Fig. 8 is a cross-sectional view at D-D of fig. 7.
Fig. 9 is a schematic perspective view of an explosion-proof soft touch sensor according to a fifth embodiment of the invention.
Fig. 10 is a cross-sectional view at E-E of fig. 9.
Fig. 11 is a schematic perspective view of an explosion-proof soft touch sensor according to a sixth embodiment of the invention.
Fig. 12 is a cross-sectional view at F-F of fig. 11.
Fig. 13 is a schematic perspective view of an explosion-proof soft touch sensor according to a seventh embodiment of the invention.
Fig. 14 is a cross-sectional view at G-G of fig. 13.
Fig. 15 is a schematic perspective view of an explosion-proof soft touch sensor according to an eighth embodiment of the invention.
Fig. 16 is a cross-sectional view at H-H of fig. 15.
Fig. 17 is a schematic perspective view of an explosion-proof soft touch sensor according to a ninth embodiment of the invention.
Fig. 18 is an axial cross-sectional view of fig. 17.
Fig. 19 is an application schematic diagram of an explosion-proof soft touch sensor according to a ninth embodiment of the invention.
Fig. 20 is a schematic diagram showing an explosion-proof soft touch sensor according to a tenth embodiment of the present invention.
Reference numerals:
explosion-proof soft touch sensor 1000
Soft membrane structure 1
The soft film protrusion 101 the soft film interface 102 specific optical feature 103
Base 2
Base body 201 cover plate 202 air hole 203
Closed air cavity 3
Sensor 4
Auxiliary base 5
Explosion-proof soft touch sensor array 2000
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
An explosion-proof soft touch sensor 1000 according to an embodiment of the present invention is described below with reference to fig. 1 to 20.
As shown in fig. 1 to 19, an explosion-proof soft touch sensor 1000 according to an embodiment of the present invention includes a soft membrane structure 1 and a base 2. Wherein, the soft membrane structure 1 is made of flexible material and can be an integrated part; the soft membrane structure 1 comprises a soft membrane protrusion 101 and a soft membrane interface 102 connected with each other; the base 2 can be used for installing the explosion-proof soft touch sensor 1000 on the surface of other objects, the base 2 is fixedly connected with the soft membrane interface 102, and a closed air cavity 3 is formed between the base 2 and the soft membrane protrusion 101; the sensor 4 is mounted on the base 2, and the sensor 4 can detect a pressure change in the closed air chamber 3 or can detect a shape change of the inner surface of the soft membrane protrusion 101.
When the soft membrane protrusion 101 is in no touch, the soft membrane protrusion 101 maintains the original shape, and when the soft membrane protrusion 101 is subjected to external touch, the soft membrane protrusion 101 deforms, so that the sensor 4 detects pressure change of the closed air cavity 3 or shape change of the inner surface of the soft membrane protrusion 101, and the touch sensing and the touch specific condition analysis are realized.
The explosion-proof soft touch sensor 1000 according to the embodiment of the invention has the following advantages: first, because the soft film structure 1 is made of flexible materials, the soft film protrusion 101 deforms under the action of the touch force, so that the gas pressure in the closed air cavity 3 changes, the shape of the inner surface of the soft film protrusion 101 changes, the gas pressure changes and the shape of the inner surface of the soft film protrusion 101 changes are detected by the sensor 4, for example, the sensor 4 can be an air pressure sensor, quick touch feedback is realized by air pressure sensing, the sensor 4 can also be a vision device such as a camera, the touch position and mode can be accurately analyzed, and separation control after touch can be effectively established. Second, because the soft membrane structure 1 is made of flexible materials, the soft membrane structure can be reasonably designed, and the soft membrane protrusions 101 corresponding to different working scenes can be selected according to different working scenes, so that long-distance, short-distance and large-range touch sensing can be realized. Thirdly, because the soft membrane structure 1 is made of flexible materials and the closed air cavity 3 is filled with positive pressure air, when the soft membrane bulge 101 receives the action of touch force, the collision danger caused by the rigid sensor 4 can be avoided, the soft membrane structure has a good buffering effect, and has good application potential in the aspect of man-machine fusion. Fourth, because the enclosed air cavity 3 is filled with positive pressure gas, external dust gas cannot enter the enclosed air cavity 3, so that the explosion-proof soft touch sensor 1000 has an explosion-proof function, has outstanding explosion-proof performance, and can be suitable for explosion-proof occasions such as coating. Fifth, the soft film structure 1 is light and thin, simple in structure and high in cost performance.
In short, the explosion-proof soft touch sensor 1000 of the embodiment of the invention can realize integrated sensing and protection of touch feedback, buffering and touch state analysis, and is suitable for explosion-proof occasions such as coating.
According to some embodiments of the present invention, the base 2 includes a base body 201 and a cover plate 202, the base body 201 and the cover plate 202 clamping the soft membrane interface 102, the base body 201 and the cover plate 202 being fastened by fasteners (e.g., bolts); thus, the assembly and replacement of the soft membrane structure 1 are facilitated.
According to some embodiments of the invention, the flexible material is a polymer material or a silica gel, wherein the polymer material may be gel, rubber, polyethylene, polypropylene, polyvinyl chloride, or the like. The choice of flexible material may be chosen according to the actual needs.
According to some embodiments of the present invention, the soft film protrusions 101 are in the shape of a revolution solid, a planar prism, or a protrusion structure other than a revolution solid and a planar prism. It will be appreciated that the shape of the soft membrane protrusion 101 may be selected according to different operating scenarios.
Referring to fig. 5 and 6, 7 and 8, 13 and 14, etc., according to some embodiments of the present invention, the soft membrane protrusion 101 can support gravity and additional acceleration by its own elasticity and structure to achieve the original shape maintenance without external force. It can be understood that when the thickness of the soft membrane protrusion 101 is larger, the soft membrane protrusion 101 can support gravity and additional acceleration (the additional acceleration herein can be understood as acceleration of the explosion-proof soft touch sensor 1000 in a moving state), the air hole 203 is not required to be arranged on the base 2, and the soft membrane protrusion 101 maintains its original shape without external force through its elasticity and structure.
Referring to fig. 1 and 2, 3 and 4, 9 and 10, 11 and 12, etc., according to some embodiments of the present invention, the soft membrane protrusion 101 is not capable of supporting gravity and additional acceleration (the additional acceleration may be understood as acceleration of the explosion-proof soft touch sensor 1000 in a moving state) by its own elasticity and structure, so that when the original shape maintenance without external force cannot be achieved, a one-way air valve (not shown) is provided on the base 2, and is used to enable the external air to flow into the closed air cavity 3 intelligently, so that the original shape maintenance of the soft membrane protrusion 101 without external force is achieved by the pressure of the closed air cavity 3. It can be understood that when the thickness of the soft membrane protrusion 101 is smaller and softer (i.e. the elastic modulus is smaller), the base 2 is provided with the air hole 203, the air hole 203 can be internally provided with a one-way air valve, the one-way air valve can be connected with an external constant pressure air source, and the compressed air in the constant pressure air source can flow into the closed air cavity 3 intelligently through the one-way air valve, so that the original shape maintenance of the soft membrane protrusion 101 without external force can be realized through the pressure of the closed air cavity 3.
Referring to fig. 1, 3, 5, 7, 17 and 18, 19, etc., according to some embodiments of the invention, sensor 4 is a barometric pressure sensor; when the explosion-proof soft touch sensor 1000 works, when the soft film protrusion 101 is subjected to external touch, the soft film protrusion 101 deforms, and the air pressure sensor detects that the pressure of the closed air cavity 3 is changed due to the deformation of the soft film protrusion 101, so that the perception of external touch is realized. It can be understood that when the soft membrane protrusion 101 is touched by the outside, the soft membrane protrusion 101 deforms, so that the volume of the closed air cavity 3 changes, and the pressure in the closed air cavity 3 changes, and the air pressure sensor senses the touch state by reading the pressure change.
Referring to fig. 10, 12, 14, 16, etc., in accordance with some embodiments of the present invention, the sensor 4 is a camera, and the soft film protrusion 101 has a specific optical feature 103 fabricated on its inner surface; when the soft film protrusion 101 is touched by the outside, the soft film protrusion 101 deforms, so that the specific optical feature 103 deforms, and the camera detects and captures the size and direction of the deformation of the specific optical feature 103, thereby realizing the sensing and analysis of the whole touch state. Specifically, the specific optical feature 103 fabricated on the inner surface of the soft film protrusion 101 may be a linear stripe or an annular stripe, and when the soft film protrusion 101 is deformed by a touch force during operation, the linear stripe or the annular stripe is deformed, and the camera detects and captures the size and direction of the deformation of the linear stripe or the annular stripe to realize sensing and analysis of the whole touch state. It should be noted that the specific optical feature 103 is not limited to a linear stripe, an annular stripe, or a superimposed stripe of both, and may take other forms that are advantageous for visual detection.
Referring to fig. 17 to 19, according to some embodiments of the present invention, when the sensor 4 is an air pressure sensor, the explosion-proof soft touch sensor 1000 further includes a sub-base 5, the sub-base 5 is connected to the top of the soft film protrusion 101, the sub-base 5 and the base 2 are respectively installed at different positions or different installation surfaces of the surface to be installed, and the soft film protrusion 101 is bar-shaped and can be disposed around the rigid body to realize touch sensing within a wide angle range.
According to some embodiments of the present invention, there are a plurality of explosion-proof soft touch sensors 1000, and the plurality of explosion-proof soft touch sensors 1000 are used for the explosion-proof soft touch sensor array 2000 arranged in a ring, a rectangle (refer to fig. 20), or a hexagon, whereby a larger-plane touch sensing can be achieved.
In the explosion-proof soft touch sensor array 2000, the closed air chambers 3 of the explosion-proof soft touch sensors 1000 may be sequentially connected in series, and the closed air chambers 3 share an external air source and a sensor 4.
The explosion-proof soft touch sensor 1000 of the present invention is described in several specific embodiments below.
Example 1
As shown in fig. 1 and 2, the explosion-proof soft touch sensor 1000 comprises a soft membrane structure 1 and a base 2, wherein the soft membrane structure 1 is made of a flexible material, the soft membrane structure 1 comprises a soft membrane protrusion 101 and a soft membrane interface 102 which are connected, the soft membrane protrusion 101 is a blunt conical film, and the soft membrane interface 102 is an annular disc with equal thickness; the soft membrane interface 102 is fixedly connected with the base 2, a closed air cavity 3 is formed between the soft membrane bulge 101 and the base 2, the whole appearance of the base 2 is similar to a cylinder, the base 2 is composed of a base body 201, a base 2 cover plate 202 and an air pressure sensor, a narrow vent 203 for supplying air from an external air source and an air passage communicated with the air pressure sensor are arranged on the side surface of the base body 201, and a lead of the air pressure sensor can be arranged in an air source pipeline.
When the device works, the air source inflates the closed air cavity 3 through the one-way air valve and the narrow vent hole 203, the blunt conical film expands, and the original shape is maintained after the preset pressure is reached; when the soft membrane protrusion 101 deforms under the action of touch force, the volume and the internal pressure of the closed air cavity 3 are changed at the same time, and the change of the pressure is detected by the air pressure sensor, so that the sensing of the touch state is realized.
Example two
The explosion-proof soft touch sensor 1000 shown in fig. 3 and 4 is basically the same in structure and operation as the first embodiment, except that the soft membrane protrusion 101 is formed in a hemispherical shell shape.
Example III
As shown in fig. 5 and 6, the explosion-proof soft touch sensor 1000 comprises a soft membrane structure 1 and a base 2, wherein the soft membrane structure 1 is made of a flexible material, the soft membrane structure 1 comprises a soft membrane protrusion 101 and a soft membrane interface 102 which are connected, wherein the soft membrane protrusion 101 is a blunt conical thick film, and the soft membrane interface 102 is an annular disc with equal thickness; the soft membrane interface 102 is fixedly connected with the base 2, a closed air cavity 3 is formed between the soft membrane bulge 101 and the base 2, the overall appearance of the base 2 is similar to a cylinder, the base 2 is composed of a base body 201, a base 2 cover plate 202 and an air pressure sensor, and an air passage communicated with the air pressure sensor is arranged on the side face of the base body 201.
When in operation, the blunt conical thick film maintains the original shape through the elasticity of the structure and the material; when the soft membrane protrusion 101 deforms under the action of touch force, the volume and the internal pressure of the closed air cavity 3 are changed at the same time, and the change of the pressure is detected by the air pressure sensor, so that the sensing of the touch state is realized.
Example IV
As shown in fig. 7 and 8, the explosion-proof soft touch sensor 1000 has substantially the same structure and operation principle as the third embodiment, except that the soft film protrusion 101 is formed as a hemispherical shell-shaped thick film.
Example five
As shown in fig. 9 and 10, the explosion-proof soft touch sensor 1000 comprises a soft membrane structure 1 and a base 2, wherein the soft membrane structure 1 is made of a flexible material, the soft membrane structure 1 comprises a soft membrane protrusion 101 and a soft membrane interface 102 which are connected, the soft membrane protrusion 101 is a blunt conical thick film, the inner surface of the soft membrane protrusion 101 is coated with linear stripes, and the soft membrane interface 102 is an equal-thickness annular disc; the soft membrane interface 102 is fixedly connected with the base 2, a closed air cavity 3 is formed between the soft membrane protrusion 101 and the base 2, the overall appearance of the base 2 is similar to a cylinder, the base 2 comprises a base body 201 and a base 2 cover plate 202, and the base 2 is provided with an air pressure sensor and a camera.
In operation, the soft membrane protrusion 101 maintains the original shape through the self structure and elasticity of the material; when the soft membrane bulge 101 deforms under the action of external force, the volume and the internal pressure of the closed air cavity 3 are changed at the same time, deformation is generated at the same time, and on the basis that the air pressure sensor recognizes that touch occurs, the camera detects the position and the direction of the touch of the soft membrane of the sensor 4 by reading the deformation, so that the comprehensive perception of the touch is realized.
Example six
As shown in fig. 11 and 12, the explosion-proof soft touch sensor 1000 includes a soft membrane structure 1 and a base 2, wherein the soft membrane structure 1 is made of a flexible material, the soft membrane structure 1 includes a soft membrane protrusion 101 and a soft membrane interface 102 connected with each other, the soft membrane protrusion 101 is in a hemispherical shell shape, an annular stripe is coated on an inner surface of the soft membrane protrusion 101, and the soft membrane interface 102 is an equal-thickness disc; the soft membrane interface 102 is fixedly connected with the base 2, a closed air cavity 3 is formed between the soft membrane bulge 101 and the base 2, the overall appearance of the base 2 is similar to a cylinder, the base 2 comprises a base body 201 and a base 2 cover plate 202, an air hole 203 for supplying air from an external air source is formed in the side face of the base body 201, and a camera is mounted on the base 2.
When in operation, the external air source inflates the closed air cavity 3 through the air hole 203, and when in inflation, the hemispherical shell-shaped film expands to reach the preset pressure, so as to maintain the original shape; when the hemispherical shell-shaped film is deformed under the action of external force, the annular stripes are deformed, and the camera analyzes the touched position and direction of the soft film protrusion 101 through photographing, so that the comprehensive perception of touch is realized.
Example seven
As shown in fig. 13 and 14, the explosion-proof soft touch sensor 1000 comprises a soft membrane structure 1 and a base 2, wherein the soft membrane structure 1 is made of a flexible material, the soft membrane structure 1 comprises a soft membrane protrusion 101 and a soft membrane interface 102 which are connected, the soft membrane protrusion 101 is a blunt conical thick film, the inner surface of the soft membrane protrusion 101 is coated with linear stripes, and the soft membrane interface 102 is an equal-thickness annular disc; the soft membrane is fixedly connected with the base 2, a closed air cavity 3 is formed between the soft membrane bulge 101 and the base 2, the whole appearance of the base 2 is similar to a cylinder, the base 2 is composed of a base body 201, a base 2 cover plate 202 and the like, and an air pressure sensor and a camera are installed at the bottom of the base 2.
In operation, the soft membrane protrusion 101 maintains its shape through its own structure and elasticity of the material; when the soft membrane protrusion 101 is deformed under the touch action, the linear stripes are deformed, and the camera detects the size and the direction of the external force applied to the soft membrane protrusion 101 of the sensor 4 by reading the deformation, so that the whole sensor 4 is stressed and perceived.
Example eight
As shown in fig. 15 and 16, the explosion-proof soft touch sensor 1000 comprises a soft membrane structure 1 and a base 2, wherein the soft membrane structure 1 is made of a flexible material, the soft membrane structure 1 comprises a soft membrane protrusion 101 and a soft membrane interface 102 which are connected, the soft membrane protrusion 101 is in a hemispherical shell thick film shape, the inner surface of the soft membrane protrusion 101 is coated with annular stripes, and the soft membrane interface 102 is an equal-thickness disc; the soft membrane interface 102 is fixedly connected with the base 2, a closed air cavity 3 is formed between the soft membrane bulge 101 and the base 2, the whole appearance of the base 2 is similar to a cylinder, the base 2 is composed of a base body 201, a base 2 cover plate 202 and the like, an air hole 203 for supplying air from an external air source is formed in the side face of the base body 201, and an air pressure sensor and a camera are installed at the bottom of the base 2.
In operation, the soft membrane protrusion 101 maintains the original shape through the self structure and elasticity of the material; when the soft membrane protrusion 101 is deformed under the touch action, the annular stripes are deformed, and the camera reads the deformation to detect the size and direction of the external force applied to the soft membrane protrusion 101 of the sensor 4, so that the whole sensor 4 is stressed.
Example nine
As shown in fig. 17 and 18, the explosion-proof soft touch sensor 1000 includes a soft membrane structure 1 and a base 2, wherein the soft membrane structure 1 is made of a flexible material, the soft membrane structure 1 includes a soft membrane protrusion 101 and a soft membrane interface 102 connected with each other, the soft membrane protrusion 101 is a cylindrical thin film, and the soft membrane interface 102 is an equal-thickness annular disc; the soft membrane junction is fixedly connected with the base 2, a closed air cavity 3 is formed between the soft membrane bulge 101 and the base 2, the other end of the soft membrane bulge 101 is fixedly connected with the auxiliary base 5 through bonding, the overall appearance of the base 2 is similar to a cylinder, the base 2 is composed of a base body 201, a base 2 cover plate 202 and the like, an air hole 203 for supplying air from an external air source is formed in the side face of the base body 201, and an air pressure sensor is arranged on the base 2.
As shown in fig. 19, when in installation, the base 2 and the sub-base 5 are respectively installed at different positions or different installation surfaces of the surface to be installed, and the soft membrane protrusion 101 is connected between the main base 2 and the sub-base 5, so as to realize a larger range of touch sensing.
During operation, an external air source inflates the closed air cavity 3 through the narrow vent holes 203, and when the air is inflated, the soft membrane protrusions 101 expand, and the original shape is maintained; when the soft membrane bulge 101 deforms under the action of external force, the internal pressure of the closed air cavity 3 changes, and the pressure change is detected by the air pressure sensor communicated with the air passage, so that the whole sensor 4 is stressed.
Examples ten
Fig. 20 shows an explosion-proof soft touch sensor array 2000, where the soft touch sensor 4 array is a rectangular array formed by using a plurality of explosion-proof soft touch sensors 1000, and may be covered on different planes. That is, a plurality of explosion-proof soft touch sensors 1000 are arranged in a rectangular array, and touch sensing of a large plane can be achieved.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," 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 invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An explosion-proof soft touch sensor, comprising:
the flexible membrane structure is made of flexible materials and comprises flexible membrane protrusions and flexible membrane interfaces which are connected with each other;
the base is fixedly connected with the soft membrane interface, and a closed air cavity is formed between the base and the soft membrane bulge; the base is provided with a sensor;
when the soft membrane bulge is in no touch during operation, the soft membrane bulge maintains the original shape; when the soft membrane bulge is subjected to external touch action, the soft membrane bulge deforms, so that the sensor detects pressure change of the closed air cavity or shape change of the inner surface of the soft membrane bulge, and the touch sensing and the touch specific condition analysis are realized.
2. The explosion-proof soft touch sensor of claim 1, wherein the base comprises a base body and a cover plate, the base body and the cover plate clamping the soft membrane interface, the base body and the cover plate being fastened by fasteners.
3. The explosion-proof soft touch sensor according to claim 1, wherein the flexible material is a polymer material or a silica gel.
4. The explosion-proof soft touch sensor according to claim 1, wherein the soft membrane protrusions are in a shape of a revolution solid, a planar prism, or a protruding structure other than the revolution solid shape and the planar prism.
5. The explosion-proof soft touch sensor according to claim 1, wherein the soft membrane protrusions can support gravity and additional acceleration through their own elasticity and structure to achieve the original shape maintenance without external force.
6. The explosion-proof soft touch sensor according to claim 1, wherein when the soft membrane protrusion cannot support gravity and additional acceleration through its own elasticity and structure, so that the original shape maintenance without external force cannot be realized, the base is provided with a one-way air valve, and the one-way air valve is used for enabling external air to flow into the closed air cavity intelligently, so that the original shape maintenance without external force of the soft membrane protrusion is realized through the pressure of the closed air cavity.
7. The explosion-proof soft touch sensor of claim 1, wherein the sensor is a barometric pressure sensor; when the explosion-proof soft touch sensor works, when the soft membrane bulge is subjected to external touch action, the soft membrane bulge deforms, and the air pressure sensor detects that the pressure of the closed air cavity is changed due to the deformation of the soft membrane bulge, so that the perception of external touch is realized.
8. The explosion-proof soft touch sensor according to claim 1, wherein the sensor is a camera, and the inner surface of the soft membrane bulge is provided with specific optical characteristics; when the soft membrane bulge is subjected to external touch action, the soft membrane bulge deforms, so that the specific optical characteristic deforms, and the camera detects and captures the size and the direction of the deformation of the specific optical characteristic, so that the whole touch state is sensed and analyzed.
9. The explosion-proof soft touch sensor according to claim 1, further comprising a sub-base connected to the top of the soft membrane protrusion, wherein the sub-base and the base are respectively used for being mounted on different positions or different mounting surfaces of the surface to be mounted, and the soft membrane protrusion is bar-shaped and can be arranged around the rigid body when the sensor is an air pressure sensor.
10. The explosion proof soft touch sensor of any one of claims 1-8, wherein there are a plurality of said explosion proof soft touch sensors, a plurality of said explosion proof soft touch sensors being arranged in a circular, rectangular or hexagonal array.
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