Over-the-air touch sensing device

Abstract

The utility model belongs to the technical field of touch sensing, and discloses a distance touch sensing device, which comprises a touch panel, a suspended sensing piece, a PCB (printed circuit board) and a sensing identification module, a gap is formed between the touch panel and the PCB, and air is used as a medium in the gap; the suspended induction part comprises at least one of an induction probe, an induction piece and a preset induction part, one end of the suspended induction part is connected with the PCB, the other end of the suspended induction part extends out of the PCB and is suspended in the gap, and the suspended induction part is used for inducing touch input operation triggered on the touch panel and generating an induction signal; the induction recognition module is connected with the PCB, the suspended induction piece is connected with the induction recognition module through the PCB, and the induction recognition module is used for detecting induction signals and determining touch input operation according to the induction signals. The utility model aims to improve the accuracy of touch sensing.

Description

TECHNICAL FIELD

[0001] The utility model relates to touch sensing technical field, especially touch sensing device of air separation. BACKGROUND

[0002] Touch sensing has been widely applied in various household appliances due to its clean and beautiful operation interface, and the design of touch sensing generally includes a touch panel for user interaction, a PCB, a sensing device on the PCB, and a medium between the touch panel and the PCB.

[0003] In the prior art, the touch sensing of some products is designed as air separation touch sensing, that is, air is used as the medium between the touch panel and the PCB. In order to ensure the accuracy in the air separation sensing scenario, an additional sensing device is generally provided on the PCB. Increasing the sensing device capable of generating a sensing signal is conducive to improving the signal-to-noise ratio of the sensing signal. However, this scheme is limited by the circuit design on the PCB, and the space for arranging the sensing device is limited, which results in insufficient effect of the sensing device as a sensing signal generating device and affects the accuracy of touch sensing. SUMMARY

[0004] The utility model aims to provide a kind of air separation touch sensing device, to solve one or more technical problems existing in prior art, at least provide a beneficial choice or create conditions.

[0005] The utility model solves the technical problem of the solution scheme:

[0006] Provide a kind of air separation touch sensing device, the air separation touch sensing device includes: touch panel, suspended sensing piece, PCB and sensing identification module;

[0007] The gap is provided between the touch panel and the PCB, and air is used as the medium in the gap.

[0008] The suspended sensing piece includes at least one of an induction probe, an induction sheet and a preset sensing piece, one end of the suspended sensing piece is connected to the PCB, and the other end of the suspended sensing piece extends outside the PCB and is suspended in the gap, and the suspended sensing piece is used to sense the touch input operation triggered on the touch panel and generate a sensing signal.

[0009] The sensing identification module is connected to the PCB, and the suspended sensing piece is connected to the sensing identification module through the PCB, and the sensing identification module is used to detect the sensing signal and determine the touch input operation according to the sensing signal.

[0010] In some embodiments, the sensing probe comprises a plurality of first bending portions, and the sensing probe forms a first preset angle at the first bending portions.

[0011] In some embodiments, the sensing probe comprises a plurality of first bending portions, and the sensing probe is curved into a curve shape with a preset curvature at the first bending portions.

[0012] In some embodiments, the hovering touch sensing device further comprises an LED lamp and / or a nixie tube, and a target pin of the LED lamp and / or the nixie tube is set as the sensing probe.

[0013] In some embodiments, the sensing sheet comprises a plurality of second bending portions, and the sensing sheet forms a second preset angle at the second bending portions.

[0014] In some embodiments, the sensing sheet comprises a plurality of second bending portions, and the sensing sheet is curved into a curved surface shape with a preset main curvature at the second bending portions.

[0015] In some embodiments, the hovering sensing member is connected and spliced into a preset shape by a plurality of the sensing probes and / or a plurality of the sensing sheets.

[0016] In some embodiments, the hovering touch sensing device further comprises a sensing disc, which is printed on a preset position on the PCB board and / or a welding point position of the hovering sensing member and the PCB board, and the sensing disc is used for sensing the touch input operation and generating the sensing signal.

[0017] In some embodiments, the hovering touch sensing device further comprises a sensing wire, which is printed on the PCB board and connected with the hovering sensing member and the sensing disc, and the sensing wire is used for sensing the touch input operation and generating and transmitting the sensing signal.

[0018] In some embodiments, the hovering sensing member is made of one or more of copper, aluminum, silver, iron, alloy material and composite material, and the hovering sensing member is set to be completely exposed, or completely or partially wrapped with a plastic layer.

[0019] The utility model discloses a beneficial effect is: through touch panel, the air induction piece, PCB board and response identification module constitute the air touch device, wherein, the gap between touch panel and PCB board is with air as medium, carries out the air induction, the air induction piece includes at least one of response probe, induction sheet and prearranged induction piece, and one end of this air induction piece is connected with PCB board to make the air induction piece fixed on the PCB board, and the other end is suspended and extends to the gap between PCB board and touch panel, still through PCB board and response identification module connection, compared with the inductor device that sets up on the PCB board and is limited to the inductor device on the circuit design of PCB board, the air induction piece as the inductor device that can produce response signal, still reduces the distance between the touch panel through the suspension and extends to the outside of PCB board, and the design of suspension also makes the shape of air induction piece can not be limited to the circuit design on the PCB board, thereby produces the response signal of greater signal-to-noise ratio, and it is easier to identify the touch input operation based on the response signal, improves the accuracy of air touch induction. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to make the technical scheme in the embodiment of the utility model more clearly, the following will briefly describe the drawing needed to be used in the embodiment. Obviously, the drawing described is only a part of the embodiment of the utility model, not all the embodiment, and the person skilled in the art can obtain other design scheme and drawing according to these drawings without paying the creative labor.

[0021] Figure 1 It is the structural schematic diagram of the utility model one air touch induction device;

[0022] Figure 2 It is the schematic diagram of the utility model response probe;

[0023] Figure 3 It is the schematic diagram of the utility model induction sheet;

[0024] Figure 4 It is another schematic diagram of the utility model induction sheet;

[0025] Figure 5 It is one kind of schematic diagram of the utility model air induction piece.

[0026] In the drawing: touch panel-100, response probe-200, induction sheet-300, PCB board-400. DETAILED DESCRIPTION

[0027] In order to make the technical scheme in the embodiment of the utility model more clearly, the following will briefly describe the drawing needed to be used in the embodiment. Obviously, the drawing described is only a part of the embodiment of the utility model, not all the embodiment, and the person skilled in the art can obtain other design scheme and drawing according to these drawings without paying the creative labor.

[0028] It should be noted that although the functional modules are divided in the system schematic diagram, the logical order is shown in the flowchart, but in some cases, the steps shown or described can be performed in a manner different from the module division in the system or the order in the flowchart. The terms "first", "second", and the like in the specification and claims and the above drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0029] In the related art, touch sensing is widely used in various household appliances due to its advantages such as clean and beautiful operation interface. The design of touch sensing generally includes a touch panel for user interaction, a PCB board, a sensing device on the PCB board, and a medium between the touch panel and the PCB board.

[0030] In the prior art, the touch sensing of some products is designed as air-gap touch sensing, that is, air is used as the medium between the touch panel and the PCB board. In order to ensure accuracy in the air-gap sensing scenario, an additional sensing device is generally provided on the PCB board. The sensing device is a kind of conductive sensing device, which can also generate a sensing signal for touch input operation. Increasing the sensing device capable of generating a sensing signal is beneficial to improve the signal-to-noise ratio of the sensing signal, so as to more easily detect the touch input operation and improve the accuracy of touch sensing. However, this scheme is limited by the circuit design on the PCB board, and the space for arranging the sensing device is limited, which affects the effect of the sensing device as a sensing signal generating device and the accuracy of touch sensing.

[0031] Figure 1 is a structural schematic diagram of an air-gap touch sensing device provided by an embodiment of the present application, Figure 1 The air-gap touch sensing device of the present application can include, but is not limited to, a touch panel 100, a suspended sensing piece, a PCB board 400, and an sensing recognition module (not shown in the figure);

[0032] A gap is provided between the touch panel 100 and the PCB board 400, and air is used as the medium in the gap;

[0033] The suspended sensing piece includes at least one of an sensing probe 200, an sensing sheet 300, and a preset sensing piece (not shown in the figure). One end of the suspended sensing piece is connected to the PCB board 400, and the other end of the suspended sensing piece extends out of the PCB board 400 and is suspended in the gap. The suspended sensing piece is used to sense a touch input operation triggered on the touch panel 100 and generate a sensing signal;

[0034] The sensing recognition module is connected to the PCB board 400, and the suspended sensing piece is connected to the sensing recognition module through the PCB board 400. The sensing recognition module is used to detect the sensing signal and determine the touch input operation according to the sensing signal.

[0035] In the embodiment of the present application, the air-touch sensing device comprises at least a touch panel 100, a suspended sensing member, a PCB board 400 and a sensing recognition module. The touch panel 100 is used to receive external touch input operation. The suspended sensing member is used to sense the touch input operation and generate a sensing signal. The sensing recognition module is used to detect the sensing signal and identify the touch input operation. One end of the suspended sensing member is connected to the PCB board 400. The PCB board 400 provides a setting fulcrum for the suspended sensing member. The sensing recognition module can be arranged on the PCB board 400 or other positions outside the PCB board 400 and connected to the PCB board 400 through a wire. The suspended sensing member is connected to the sensing recognition module through the printed wire on the PCB board 400. In addition, if the air-touch sensing device is applied to a certain device, the PCB board 400 can also be used to arrange other circuits for the device.

[0036] Further, in order to facilitate the observation of the gap between the touch panel 100 and the PCB board 400, Figure 1 The structural schematic diagram is a schematic diagram observed from the cross-sectional direction. Referring to Figure 1 The gap is provided between the touch panel 100 and the PCB board 400. Different from the prior art which fills insulating material as medium, air is used as medium in the gap of the embodiment. In addition, the specific shape of the touch panel 100 and the distance between the touch panel 100 and the PCB board 400 are not limited. Figure 1The structure is only taken as an example for reference. On one side of the PCB 400 relative to the touch panel 100, a suspended sensing piece is arranged, one end of the suspended sensing piece is connected with the PCB 400 and is fixed on the PCB 400, and the other end extends out of the PCB 400 and is suspended in the gap between the PCB 400 and the touch panel 100. If the touch panel 100 and the PCB 400 are two planes respectively, the suspended sensing piece is equivalent to being arranged between the two planes and being connected with the plane on one side of the PCB 400. Specifically, the suspended sensing piece includes at least one of the sensing probe 200, the sensing sheet 300 and a preset sensing piece. The sensing probe 200, the sensing sheet 300 and the preset sensing piece are all made of conductive material and can generate an induction signal. The sensing probe 200, the sensing sheet 300 and the preset sensing piece can be respectively connected with different positions on the PCB 400 or can be independently applied. The shape of the sensing probe 200 is needle-shaped or tube-shaped, one end of the sensing probe 200 is connected with the PCB 400, and the other end extends out of the PCB 400. It should be noted that although the sensing probe 200 is defined as a sensing probe 200 in the embodiment, the shape of the sensing probe 200 is not limited to be straight. According to product requirements, the sensing probe 200 can have a design of being bent or curved when extending out of the PCB 400, which is not limited in the embodiment. The sensing sheet 300 is a sheet-shaped sensing device, and the shape of the sensing sheet 300 can be rectangular or elliptical. Taking the rectangular shape as an example, one side of the rectangular sensing sheet 300 is connected to the PCB 400 through a pin or directly, and the other three sides are suspended outside the PCB 400. Similarly, the sensing sheet 300 is not limited to be a plane. According to product requirements, the sensing sheet 300 can have a design of being bent or curved, which is not limited in the embodiment. The preset sensing piece can have other shapes different from the sensing probe 200 and the sensing sheet 300, such as a columnar shape or a conical shape. or and the like.

[0037] In addition, the induction recognition module can detect the induction signals generated by each position of the suspended sensing piece connected thereto, realize the reception and detection of the induction signals, and further determine whether to trigger the touch input operation according to the detection result.

[0038] Compared with the inductive device arranged on the PCB 400 and limited by the existing circuit design on the PCB 400, the suspended inductive piece not only functions as an inductive device capable of generating an inductive signal, but also reduces the distance between the suspended inductive piece and the touch panel 100 by extending to outside the PCB 400, and the suspended design of the suspended inductive piece makes the shape of the suspended inductive piece not limited by the circuit design on the PCB 400, so that an inductive signal with a larger signal-to-noise ratio is generated, and thus the touch input operation is more easily identified according to the inductive signal, and the accuracy of the air-touch induction is improved.

[0039] In some embodiments, the inductive probe 200 includes a plurality of first bending portions, and the inductive probe 200 forms a first preset angle at the first bending portions.

[0040] Optionally, the portion of the inductive probe 200 forming the bending is defined as the first bending portion, which is distinguished from the arc-shaped bending, and the bending refers to forming a sharp angle, for example, as shown in Figure 2 (a). It should be noted that there can be one or more than one first bending portion on the inductive probe 200, and the first bending portion is only used to define the bending present on the inductive probe 200, and does not limit a specific bending, Figure 2 (a) illustrates the inductive probe 20 with one first bending portion; and the first preset angle is actually a collection of one or more angles, which is used to limit the angle of the bending formed by each first bending portion, for example or and the like. The designer can design the position of the first bending portion on the inductive probe 200 and the first preset angle corresponding to each first bending portion according to product requirements, which is not limited in the embodiment.

[0041] By arranging the first bending portion on the inductive probe 200, even if there is a spatially limited gap between the touch panel 100 and the PCB 400, the inductive probe 200 can still obtain more extension space by bending, so that a larger size inductive probe 200 can be arranged in the gap, and the signal-to-noise ratio of the inductive signal and the accuracy of the air-touch induction are further improved.

[0042] In some embodiments, the inductive probe 200 includes a plurality of first bending portions, and the inductive probe 200 is curved into a curve at the first bending portions.

[0043] Optionally, the portion of the inductive probe 200 forming the bending is defined as the first bending portion, which is distinguished from the arc-shaped bending, and the bending refers to forming a sharp angle, for example, as shown in Figure 2(b), it is to be noted that there can be one or more than one first bending part on the inductive probe 200, and the first bending part is only used to define the bending on the inductive probe 200, but not to define a specific bending, Figure 2 (b) shows that the inductive probe 200 has two first bending parts; and when a bending occurs in the line segment, the curvature at the bending changes from zero to a certain curvature greater than zero, and then returns to zero, thus the preset curvature is not used to define a specific curvature, but to define the curvature involved by each first bending part. The designer can design the position of the first bending part on the inductive probe 200 and the preset curvature according to the product requirements, which is not limited in the embodiment.

[0044] By setting the first bending part on the inductive probe 200, even if there is a space-limited gap between the touch panel 100 and the PCB 400, the inductive probe 200 can still extend more by bending, so that a larger inductive probe 200 can be arranged in the gap, and the signal-to-noise ratio of the inductive signal and the accuracy of the through-air touch induction are further improved.

[0045] In other embodiments, there can be both first bending parts and first bending parts on the inductive probe 200, so that the inductive probe 200 can be designed in a shape that is more convenient to extend in the gap by combining bending and bending.

[0046] In some embodiments, the through-air touch induction device further comprises an LED lamp and / or a number tube, and the target pin of the LED lamp and / or the number tube is set as the inductive probe 200.

[0047] It can be understood that, for the plane on which the PCB 400 is located, the LED lamp and the number tube are both devices that are obviously higher than the plane, thus, when the PCB 400 is provided with the LED lamp and / or the number tube, the pin of the LED lamp and / or the number tube can be directly used as the inductive probe 200, and the pin of the LED lamp and the number tube both meet the condition of extending out of the PCB 400, for example, one pin of a three-pin LED lamp, two pins of a two-pin LED lamp, or an individual pin of a number tube, etc. In other embodiments, the free pin of other devices can also be used as the inductive probe 200, and for the pin design of the number tube, the pin used as the inductive probe 200 can be further lengthened, so as to achieve better induction effect.

[0048] By setting the target pin of the LED lamp and / or the number tube as the inductive probe 200, the current device can be directly used as the inductive probe 200, which saves the cost of designing or manufacturing the inductive probe 200, and reduces the cost of the circuit and the device.

[0049] In some embodiments, the sensing sheet 300 includes a plurality of second bending portions, and the sensing sheet 300 forms a second preset angle of intersection at the second bending portions.

[0050] Optionally, the portion of the sensing sheet 300 forming the bending is defined as the second bending portion, and the distinction between the bending and the curvature can refer to the above description of the sensing probe 200, which is not repeated here. The sensing sheet 300 is different from the sensing probe 200 in that the bending is the bending of the entire sheet, and the folding line formed by the bending can have various directions, such as bending in the horizontal direction or bending in the vertical direction, etc. Figure 3 , and the folding line formed by the bending can have various directions, such as bending in the horizontal direction or bending in the vertical direction, etc. Figure 3 Figures (a) and (b) respectively illustrate two bending directions, and the folding line is illustrated by a dashed line for ease of observation. It should be noted that the sensing sheet 300 can have one or more second bending portions, and the second bending portion is only used to define the bending present on the sensing sheet 300, and does not define a specific bending. Meanwhile, the second preset angle is actually a collection of one or more angles, which is used to define the intersection angle of the two planes intersecting at each second bending portion, such as or etc. The designer can design the position of the second bending portion on the sensing sheet 300, the second preset angle corresponding to each second bending portion, and the direction of the folding line according to product requirements, which is not limited in the present embodiment.

[0051] By providing the second bending portion on the sensing sheet 300, even if there is a space-limited gap between the touch panel 100 and the PCB 400, the sensing sheet 300 can still obtain more extension space by bending, so that a larger size sensing sheet 300 can be arranged in the gap, and the signal-to-noise ratio of the sensing signal and the accuracy of the air-touch sensing are further improved.

[0052] In some embodiments, the sensing sheet 300 includes a plurality of second bending portions, and the sensing sheet 300 forms a second preset angle of intersection at the second bending portions.

[0053] Optionally, the portion of the sensing sheet 300 forming the bending is defined as the second bending portion, and the distinction between the bending and the curvature can refer to the above description of the sensing probe 200, which is not repeated here. The sensing sheet 300 is different from the sensing probe 200 in that the bending is the bending of the entire sheet, and the folding line formed by the bending can have various directions, such as bending in the horizontal direction or bending in the vertical direction, etc. Figure 4 Figure 4 ​The second bending part is used to define the bending on the inductive sheet 300, and the main curvature of all points in the second bending part is not zero. For a curved surface, the main curvature reflects the bending degree of a point on the curved surface. The preset main curvature is actually a collection of main curvatures of multiple points, and is used to define the main curvature of all points in each second bending part. The designer can determine the position of the bending on the inductive sheet 300 according to product requirements, and then design the preset main curvature based on the position, so as to accurately define the curved surface shape of each second bending part. In this embodiment, the specific curved surface shape is not limited, and for example, the angle of the second bending part of the inductive sheet 300 can be converted into a smooth transition curved surface, and other curved surface shapes can also be added in other embodiments.

[0054] By arranging the second bending part on the inductive sheet 300, even if there is a space-limited gap between the touch panel 100 and the PCB 400, the inductive sheet 300 can still obtain more extension space by bending, so that a larger inductive sheet 300 can be arranged in the gap, and the signal-to-noise ratio of the sensing signal and the accuracy of the air-touch sensing are further improved.

[0055] In other embodiments, the inductive sheet 300 can simultaneously have a plurality of second bending parts and a plurality of second bending parts, so that the inductive sheet 300 can be designed to have a shape that is more convenient to extend in the gap by combining bending and bending.

[0056] In some embodiments, the suspended sensing member is connected and spliced into a preset shape by a plurality of inductive probes 200 and / or a plurality of inductive sheets 300.

[0057] Optionally, the suspended sensing member can not be limited to the shape of the inductive probe 200, the inductive sheet 300 or the preset sensing member, and can also be connected and spliced into a more diversified shape by combining the inductive probe 200 and the inductive sheet 300. Therefore, in this embodiment, the suspended sensing member includes a plurality of inductive probes 200 and / or a plurality of inductive sheets 300. Based on this, the designer can connect and splice according to the preset shape, so as to combine a suspended sensing member that is more convenient to extend in the gap and has better sensing effect. For reference Figure 5 , Figure 5Fig. (a) and Fig. (b) respectively show two possible preset shapes, for example, in Fig. (a), the other end of the two inductive probes 200 which are at an acute angle with the PCB 400 forms a convex structure, or as shown in Fig. (b), the inductive probe 200 is used as a support, and a parallel inductive sheet 300 is connected to the other end of the inductive probe 200. In this embodiment, the specific shape of the preset shape is not limited, and the suspended inductive member formed by connecting and combining the inductive probe 200 and / or the inductive sheet 300 can include but is not limited to Figure 5 As shown in the structure, the suspended inductive member can be designed according to the actual product requirements of the designer. By connecting and combining the inductive probe 200 and / or the inductive sheet 300, the suspended inductive member can further improve the signal-to-noise ratio of the inductive signal and the accuracy of the hovering touch sensing.

[0058] In some embodiments, the hovering touch sensing device further comprises an inductive disc, which is printed on a preset position on the PCB 400 and / or a welding point position of the suspended inductive member and the PCB 400. The inductive disc is used to sense the touch input operation and generate an inductive signal.

[0059] Optionally, in addition to using the suspended inductive member to sense the touch input operation and generate an inductive signal, the suspended inductive member can also be combined with an inductive device printed on the PCB 400. Based on this, the inductive disc is printed on the PCB 400, which is an inductive device made of conductive material and can sense the touch input operation and generate an inductive signal. The inductive disc can be printed on a preset position on the PCB 400, connected to the suspended inductive member through the conductive wire printed on the PCB 400, or directly printed on the welding point position of the suspended inductive member and the PCB 400 to be connected to the suspended inductive member. Based on the connection, the inductive signals generated on the suspended inductive member and the inductive disc are combined, which is conducive to detection by the inductive recognition module, and further increases the inductive device for generating an inductive signal, thereby improving the signal-to-noise ratio of the inductive signal and the accuracy of the hovering touch sensing.

[0060] In some embodiments, the hovering touch sensing device further comprises an inductive wire, which is printed on the PCB 400 and connected to the suspended inductive member and the inductive disc. The inductive wire is used to sense the touch input operation and generate and transmit an inductive signal.

[0061] Optionally, since the conductive wire is also made of conductive material, an induction signal for the touch input operation will also be generated in the conductive wire, but for the conductive wire in the general circuit, since the current flowing in the conductive wire during operation of the circuit already exists, the induction signal generated by the touch induction is relatively weak, which is difficult to detect and will not have an impact, and for the induction device for touch induction, there is no conventional current flowing in the inside, and even as an induction wire, one end can be truncated, only one end is connected to the suspended induction piece and the induction disc, and detection can be performed through the induction recognition module. It should be noted that the wiring of the induction wire cannot interfere with the circuit on the PCB 400 for realizing functions other than touch induction, and is not connected and is spaced apart by more than 3 times the line width. On the other hand, since the induction wire occupies a smaller space relative to the induction disc and other devices, the wiring can be more flexible, thereby covering more areas on the PCB 400, improving the signal-to-noise ratio of the induction signal and the accuracy of the air-touch induction.

[0062] In some embodiments, the suspended induction piece is made of one or more of copper, aluminum, silver, iron, alloy material and composite material, and the suspended induction piece is also provided to be completely exposed, or wrapped with a plastic layer.

[0063] In order to realize the induction touch input operation and generate an induction signal, the material of the suspended induction piece is a material with good conductivity, specifically one or more of copper, aluminum, silver, iron, alloy material and composite material. Optionally, in order to fix and enhance the salt spray resistance of the suspended induction piece, the suspended induction piece can also be wrapped with a plastic layer, wherein the plastic layer is made of epoxy resin or polytetrafluoroethylene material, or is set to be in a completely exposed state according to product requirements.

[0064] The preferred embodiments of the present application are described in detail above, but the present application is not limited to the embodiments described above, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. An air-touch sensing device, characterized by, The air-gap touch sensing device comprises a touch panel, a suspended sensing element, a PCB board and a sensing recognition module. A gap is arranged between the touch panel and the PCB board, and air is used as the medium in the gap. The suspended sensing element comprises at least one of an sensing probe, a sensing sheet and a preset sensing element, one end of the suspended sensing element is connected to the PCB board, and the other end of the suspended sensing element extends out of the PCB board and is suspended in the gap, the suspended sensing element is used for sensing a touch input operation triggered on the touch panel and generating a sensing signal. The sensing recognition module is connected to the PCB board, the suspended sensing element is connected to the sensing recognition module through the PCB board, and the sensing recognition module is used for detecting the sensing signal and determining the touch input operation according to the sensing signal.

2. The device according to claim 1, wherein The sensing probe comprises a plurality of first bending portions, and the sensing probe forms a first preset angle at the first bending portions.

3. The device according to claim 1, wherein The sensing probe comprises a plurality of first bending portions, and the sensing probe is curved into a curve shape at the first bending portions.

4. The device according to claim 1, wherein The air-gap touch sensing device further comprises an LED lamp and / or a digital tube, and target pins of the LED lamp and / or the digital tube are arranged as the sensing probe.

5. The device of claim 1, wherein The sensing sheet comprises a plurality of second bending portions, and the sensing sheet forms a second preset angle at the second bending portions.

6. The device of claim 1, wherein The sensing sheet comprises a plurality of second bending portions, and the sensing sheet is curved into a curved surface shape at the second bending portions.

7. The device according to any one of claims 1 to 6, wherein The suspended sensing element is connected and spliced into a preset shape by a plurality of the sensing probes and / or a plurality of the sensing sheets.

8. The device according to any one of claims 1 to 6, wherein The air-gap touch sensing device further comprises a sensing disc, the sensing disc is printed on a preset position on the PCB board and / or a welding point position of the suspended sensing element and the PCB board, and the sensing disc is used for sensing the touch input operation and generating the sensing signal.

9. The device according to claim 8, wherein The air-gap touch sensing device further comprises a sensing wire, the sensing wire is printed on the PCB board and connected to the suspended sensing element and the sensing disc, and the sensing wire is used for sensing the touch input operation and generating and transmitting the sensing signal.

10. The device according to any one of claims 1 to 6, wherein The suspended sensing element is made of one or more of copper, aluminum, silver, iron, alloy material and composite material, and the suspended sensing element is completely exposed, or is completely wrapped or partially wrapped by a plastic layer.

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