Touch sensing device, cooking utensil and integrated cooker

Abstract

The utility model relates to a touch sensing device, a cooking utensil and an integrated cooker, the touch sensing device comprises a sensing disc, the sensing disc is provided with a plurality of hollow first light-transmitting areas and second light-transmitting areas, sensing areas are arranged around the first light-transmitting areas, the sensing areas are mutually independent, and the second light-transmitting areas are arranged around the first light-transmitting areas. All the induction areas are located at the top of the induction disc; the icon display layer is arranged at the top of the induction disc, the icon display layer comprises a touch icon and a non-touch icon, the touch icon corresponds to the first light-transmitting area, and the non-touch icon corresponds to the second light-transmitting area; and the light-emitting module is arranged at the bottom of the induction disc and is used for illuminating the touch icon and the non-touch icon through the first light-transmitting area and the second light-transmitting area. According to the invention, the anti-interference capability of distance touch can be effectively improved, the signal-to-noise ratio is enhanced, the cost is low, the installation is simple and reliable, and the sensitivity is high.

Description

Technical Field

[0001] The present disclosure relates to the technical field of kitchen appliance control, and in particular to a touch sensing device, a cooking utensil and an integrated stove. Background Art

[0002] At present, touch technologies include capacitive touch and air touch. Capacitive touch technology relies on detecting the capacitance change between the finger and the sensor plate for identification. Therefore, the greater the capacitance change detected, the more sensitive the change and the higher the sensitivity. Air touch technology is a touch method that can sense the approach and sliding of the finger without touching the panel.

[0003] Traditional air touch technology achieves the purpose of air separation by improving the chip algorithm to extract the slightly changing capacitance signal from the surrounding interference. Air touch is affected by rich interactive information, which will produce large electrical signal noise, resulting in reduced sensitivity and reliability. The current solutions to improve the above performance of air touch technology are often accompanied by high economic costs. Utility Model Content

[0004] In order to solve the above-mentioned technical problems of insufficient sensitivity and reliability and high cost of traditional air touch, the utility model proposes a touch sensing device, a cooking utensil and an integrated stove.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A touch sensing device, comprising:

[0007] A sensing plate, wherein the sensing plate is provided with a plurality of hollow first light-transmitting areas and second light-transmitting areas, each of the first light-transmitting areas is surrounded by a sensing area, each of the sensing areas is independent of each other, and each of the sensing areas is located at the top of the sensing plate;

[0008] An icon display layer, the icon display layer is arranged on the top of the sensing disk, the icon display layer includes touch icons and non-touch icons, the touch icons correspond to the first light-transmitting area, and the non-touch icons correspond to the second light-transmitting area;

[0009] A light emitting module is installed at the bottom of the sensing plate and is used to illuminate the touch icon and the non-touch icon through the first light-transmitting area and the second light-transmitting area.

[0010] In a further embodiment, a processing unit is further included, and each of the sensing areas is electrically connected to the processing unit, and the processing unit is used to collect the capacitance change of each of the sensing areas and output a touch key signal according to the capacitance change.

[0011] In a further embodiment, the sensing disk is a circuit board, the circuit board includes a top copper foil layer, and the sensing area is formed by the top copper foil layer.

[0012] In a further embodiment, the circuit board also includes a bottom copper foil layer, a substrate and an insulating layer, the top copper foil layer and the bottom copper foil layer are located on both sides of the substrate, the substrate is used to support the top copper foil layer and the bottom copper foil layer, and the insulating layer is used to isolate the top copper foil layer and the bottom copper foil layer.

[0013] In a further embodiment, the icon display layer is a transparent or translucent panel, the touch icons and non-touch icons are printed and attached to the transparent or translucent panel, and the substrate is made of a waterproof material.

[0014] In a further embodiment, a control circuit is further included, the light emitting module includes a plurality of first light emitting elements and second light emitting elements, the positions of the first light emitting elements correspond one-to-one to the first light-transmitting areas, and the positions of the second light emitting elements correspond one-to-one to the second light-transmitting areas;

[0015] Each of the first light-emitting elements is connected to the corresponding sensing areas through the control circuit, and the control circuit is used to control the switching of the first light-emitting element according to the capacitance change of each of the sensing areas.

[0016] In a further embodiment, the width of the sensing area is greater than or equal to 2 mm, and the interval between the sensing areas is greater than or equal to 0.5 mm.

[0017] The utility model also provides a cooking utensil, characterized in that the cooking utensil comprises the above-mentioned touch sensing device.

[0018] In a further embodiment, the cooking appliance includes a control system, which is located inside the cooking appliance, and the touch sensing device is located outside the cooking appliance. The processing unit of the touch sensing device is connected to the control system, and the touch sensing device is used to receive user instructions through touch and send the user instructions to the control system.

[0019] The utility model also provides an integrated stove, which comprises the above-mentioned cooking utensil.

[0020] 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.

[0021] The implementation of this utility model has the following beneficial effects:

[0022] The utility model provides a hollowed-out first light-transmitting area and a second light-transmitting area on a sensing disk, and sensing areas are arranged around the first light-transmitting area. The first light-transmitting area and the second light-transmitting area correspond to touch icons and non-touch icons respectively, and touch sensing of the touch icons is achieved through the sensing areas. Since the sensing disk is installed above the light-emitting module, the sensing area is located on the top of the sensing disk, so it is closer to the finger, has a smaller distance between the electrodes, is more sensitive, is not affected by non-touch sensing icons, and greatly improves the reliability of the device.

[0023] Further features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions and advantages in the embodiments of this specification or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A structural block diagram of a touch sensing device according to an embodiment of the present disclosure is shown;

[0026] Figure 2 A schematic structural diagram of a touch sensing device according to an embodiment of the present disclosure is shown;

[0027] Figure 3 A schematic longitudinal cross-sectional view of a touch sensing device according to an embodiment of the present disclosure is shown;

[0028] In the figure: 1, sensor disk; 11, first light-transmitting area; 12, second light-transmitting area; 13, sensor area; 2, icon display layer; 3, light-emitting module. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or server that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.

[0031] Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0032] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0033] The term "and / or" herein is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the term "at least one" herein represents any combination of at least two of any one or more of a plurality of. For example, including at least one of A, B, and C can represent including any one or more elements selected from the set consisting of A, B, and C.

[0034] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present disclosure can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present disclosure.

[0035] Figure 1 FIG. 4 is a structural block diagram of a touch sensing device according to an embodiment of the present disclosure. Figure 1 As shown, the touch sensing device comprises: a sensing plate 1 , an icon display layer 2 and a light emitting module 3 .

[0036] Figure 2 and Figure 3 The structure diagram of the touch sensing device according to the embodiment of the present disclosure is shown in the attached specification. Figure 2, the touch sensing device comprises:

[0037] A sensing plate 1, wherein the sensing plate 1 is provided with a plurality of hollow first light-transmitting areas 11 and second light-transmitting areas 12, each of the first light-transmitting areas 11 is surrounded by a sensing area 13, each of the sensing areas 13 is independent of each other, and each of the sensing areas 13 is located at the top of the sensing plate 1;

[0038] Specifically, the sensor disk 1 is a component used to detect the user's touch action. It can be a conductor of any shape, such as a solid or hollow rectangle, circle, polygon, etc. Common materials include PCB copper foil, metal sheet, flat-top cylindrical spring, conductive cotton, conductive ink, conductive rubber, ITO layer of conductive glass, etc. The sensor disk 1 can have a hole or be hollowed out in the middle to meet the overall design and functional requirements of different products.

[0039] In the disclosed embodiment, the sensing disk 1 uses a copper foil circuit board (PCB board). Copper foil has excellent electrical conductivity and can effectively conduct current, thereby quickly responding to the user's touch action. In addition, compared with other conductive materials, the price of copper foil is relatively economical, which makes copper foil circuit boards have advantages in cost-sensitive applications. In addition, copper foil can also be made into circuit boards of various shapes and sizes through etching, stamping and other processes, providing great flexibility for design.

[0040] The sensor disk 1 is provided with a plurality of hollow first light-transmitting areas 11 and second light-transmitting areas 12. The main function of the light-transmitting area is to allow light to pass through, thereby realizing the function of lighting or display. For example, in a mirror touch switch, the light-transmitting area can be used to illuminate the touch area, so that the user can easily operate it at night or in an environment with insufficient light. In addition, the light-transmitting area can also be used to enhance the aesthetics of the product, making it look more modern and high-end. Each of the first light-transmitting areas 11 is surrounded by a sensing area 13, which can be circular, elliptical or any other shape to meet the overall design and functional requirements of the product. Each of the sensing areas 13 is independent of each other, and each sensing area 13 can independently detect signals or changes without being affected by adjacent areas, reducing interference between signals, thereby improving the sensitivity and accuracy of the device. In addition, each of the sensing areas 13 is located at the top of the sensor disk 1, so that the sensor disk 1 can more effectively capture changes in the external environment or input signals.

[0041] An icon display layer 2, the icon display layer 2 is arranged on the top of the sensor disk 1, the icon display layer 2 includes touch icons and non-touch icons, the touch icons correspond to the first light-transmitting area 11, and the non-touch icons correspond to the second light-transmitting area 12;

[0042] Specifically, the icon display layer 2 is an interface element for displaying visual information, and is usually used in the user interface of an electronic device or system. The icon display layer 2 is located on the top of the induction disk 1, and plays a role of display and interaction. The touch icon refers to an icon that a user can interact with by touching. The touch icon usually corresponds to the function of the device, such as playing music, adjusting the volume, switching applications, etc. The non-touch icon refers to an icon that is only used to display information and does not need to be operated by touching. The non-touch icon can be used to indicate status, provide prompts, or is simply a decorative design element.

[0043] The touch icon is placed at a position corresponding to the first light-transmitting area 11. When the user touches the touch icon, the sensor disk 1 can detect the touch action through the sensor area 13, thereby triggering the corresponding function. The non-touch icon is placed at a position corresponding to the second light-transmitting area 12. The non-touch icon does not respond to touch, but its position helps the user understand the function and position of the icon. Through precise layout during the design and manufacturing process, it is ensured that each icon matches its corresponding light-transmitting area in position. Such a design not only improves the user experience, but also enhances the usability and functionality of the device.

[0044] In the disclosed embodiment, the icon display layer 2 is a transparent or translucent panel, and the touch icon and the non-touch icon can be printed and attached to the transparent or translucent panel, or can be directly printed on the surface of the transparent or translucent panel by screen printing, inkjet printing or laser engraving. In other embodiments, the icon display layer 2 can also be a film printed with the touch icon and the non-touch icon. The film can be sticky and directly attached to the sensor disk 1, or it can be installed by mechanical fixing. It can be understood that the icon display layer 2 is only used to identify specific areas so that users can identify and locate different functional icons, and the disclosed embodiment does not limit this.

[0045] The light emitting module 3 is installed at the bottom of the sensor plate 1 and is used for illuminating the touch icon and the non-touch icon through the first light-transmitting area 11 and the second light-transmitting area 12 .

[0046] In the disclosed embodiment, the light emitting module 3 is an LED light emitting module, which is used to illuminate the touch icon and the non-touch icon to improve the visibility and interactivity of the user interface. In a touch screen device, the light emitting module 3 can help users locate and operate icons more accurately, especially in low-light environments. In addition, the light emitting module 3 can also be used for decoration and indication to increase the attractiveness and functionality of the product. In addition to LED light emitting modules, there are other types of light emitting modules, such as laser-based light emitting modules, which can provide higher brightness and longer transmission distances. In addition, there are organic light emitting diode (OLED) light emitting modules, which can provide flexible display and self-luminous characteristics, suitable for curved displays and flexible electronic products.

[0047] The touch sensing device also includes a processing unit, which may be an electronic controller such as a microcontroller (MCU), an application specific integrated circuit (ASIC) or a digital signal processor (DSP). Each of the sensing areas 13 is electrically connected to the processing unit, respectively, and the processing unit is used to collect the capacitance change of each of the sensing areas 13 and output a touch key signal according to the capacitance change.

[0048] Specifically, when a finger or other conductor approaches each of the sensing areas 13, a change in capacitance will be caused on the sensing electrode. The processing unit will periodically measure these capacitance values ​​and compare them with the initial reference value. The processing unit will analyze the amplitude and pattern of the capacitance change to determine whether a valid touch event has occurred. This may involve signal processing steps such as filtering, amplification, and threshold judgment. In the embodiment of the present disclosure, when a finger approaches any of the touch icons, the capacitance change of the sensing area 13 corresponding to the touch icon is the largest. When the capacitance change reaches a preset threshold, it is determined that the finger has touched the icon; once the processing unit confirms a valid touch event, it will output a corresponding touch key signal, which can be interpreted by other parts of the system to execute corresponding operations or commands.

[0049] Further, in the embodiment of the present disclosure, the sensing disk 1 is a circuit board (PCB board), the PCB board includes a top copper foil layer 101, and the sensing area 13 is composed of the top copper foil layer 101. The sensing layer forms a capacitor with the ground or other conductors. When a human finger approaches or touches these areas, the capacitance value will change, thereby being sensed. The top copper foil layer 101 is the surface layer of the PCB board, which is used to connect components and external signal pins. The top copper foil layer 101 is usually formed into a circuit pattern by chemical corrosion or mechanical milling, which provides great design freedom for the shape and layout of the sensing area 13, and the sensing area 13 can be customized according to different application scenarios. By directly making the sensing area 13 on the PCB board, the sensing function can be integrated with other electronic components on the same circuit board, simplifying the product structure, reducing the assembly steps, and improving the compactness and reliability of the overall system. In addition, the PCB board has good electrical performance and mechanical strength, and can work stably under various environmental conditions.

[0050] In the embodiment of the present disclosure, the circuit board also includes a bottom copper foil layer 102, a substrate 103 and an insulating layer 104, the top copper foil layer 101 and the bottom copper foil layer 102 are located on both sides of the substrate 103, the substrate 103 is used to support the top copper foil layer 101 and the bottom copper foil layer 102, and the insulating layer 104 is used to isolate the top copper foil layer 101 and the bottom copper foil layer 102.

[0051] Specifically, the presence of the top copper foil layer 101 and the bottom copper foil layer 102 allows the circuit designer to arrange conductor paths at different levels, thereby realizing a more complex circuit design. The substrate 103 is made of a non-absorbent material substrate (FPC flexible circuit board), or it can be made of the cheapest material such as FR-1 board coated with a three-proof paint for waterproofing, which can reduce costs while ensuring the reliability of the device. In more embodiments, other types of substrate materials can also be selected, such as: FR-4, CEM-1 and aluminum substrate, etc. It can be understood that the selection of a suitable substrate material depends on the specific requirements of the circuit design, including factors such as expected environmental conditions, electrical performance requirements, mechanical strength requirements, and cost budgets.

[0052] In the disclosed embodiment, the icon display layer 2 is a transparent or semi-transparent panel, the touch icons and non-touch icons are printed and attached to the transparent or semi-transparent panel, and the substrate 103 is made of waterproof material.

[0053] The transparent or translucent panel is an interface element for displaying the touch icon and the non-touch icon. It can be made of polycarbonate (PC), polymethyl methacrylate (PMMA, also known as acrylic) or certain types of glass. These materials have good optical properties, allowing light to penetrate while maintaining sufficient hardness and durability. In other embodiments, the icon display layer 2 can also be a thin film covering the PCB board to display the positions of the touch icon and the non-touch icon. The film is usually made of PET (polyethylene terephthalate), PC (polycarbonate) or other similar flexible transparent materials, which have good optical transparency and certain mechanical strength.

[0054] The disclosed embodiment also includes a control circuit, and the light-emitting module 3 includes a plurality of first light-emitting elements and second light-emitting elements, the positions of the first light-emitting elements correspond one-to-one with the first light-transmitting area 11, and the positions of the second light-emitting elements correspond one-to-one with the second light-transmitting area 12. By precisely controlling the correspondence between the light-emitting elements and the light-transmitting areas, the utilization efficiency of light can be maximized. The light emitted by the light-emitting elements can directly pass through the corresponding light-transmitting areas, reducing the scattering and loss of light, thereby improving the overall lighting effect and energy efficiency.

[0055] Each of the first light-emitting elements is connected to the corresponding sensing areas 13 through the control circuit, and the control circuit is used to control the switching of the first light-emitting element according to the capacitance change of each of the sensing areas 13 .

[0056] Specifically, each of the sensing areas 13 has a light emitting element associated therewith, and the control circuit is responsible for receiving the capacitance change signal from the sensing area 13 and adjusting the state of the light emitting element accordingly. This one-to-one connection method can achieve precise control.

[0057] In the disclosed embodiment, the width of the sensing area 13 is greater than or equal to 2 mm, which can better capture the presence of a finger, thereby reducing the possibility of false touches, and helping to improve the sensitivity and accuracy of the device. The interval between each sensing area 13 is greater than or equal to 0.5 mm, which helps to maintain isolation between electrodes, reduce crosstalk, and improve the accuracy and reliability of the device.

[0058] The present disclosure also provides a cooking utensil in an embodiment, wherein the cooking utensil includes the above-mentioned touch sensing device.

[0059] The cooking appliance includes a control system, which is located inside the cooking appliance. The touch sensing device is located outside the cooking appliance. The processing unit of the touch sensing device is connected to the control system. The touch sensing device is used to receive user instructions through touch and send the user instructions to the control system.

[0060] The embodiment of the present disclosure also provides an integrated stove, which includes the above-mentioned cooking utensil.

[0061] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A touch sensing device, characterized in that: include: A sensing disk (1), the sensing disk (1) being provided with a plurality of hollow first light-transmitting areas (11) and second light-transmitting areas (12), each of the first light-transmitting areas (11) being surrounded by a sensing area (13), each of the sensing areas (13) being independent of each other, and each of the sensing areas (13) being located at the top of the sensing disk (1); An icon display layer (2), the icon display layer (2) being arranged on the top of the sensing disk (1), the icon display layer (2) comprising touch icons and non-touch icons, the touch icons corresponding to the first light-transmitting area (11), and the non-touch icons corresponding to the second light-transmitting area (12); A light emitting module (3) is installed at the bottom of the sensing plate (1) and is used to illuminate the touch icon and the non-touch icon through the first light-transmitting area (11) and the second light-transmitting area (12).

2. The touch sensing device according to claim 1, characterized in that: It also comprises a processing unit, each of the sensing areas (13) is electrically connected to the processing unit, and the processing unit is used to collect the capacitance change of each of the sensing areas (13) and output a touch key signal according to the capacitance change.

3. The touch sensing device according to claim 1 or 2, characterized in that: The sensing disk (1) is a circuit board, the circuit board comprises a top copper foil layer (101), and the sensing area (13) is formed by the top copper foil layer (101).

4. The touch sensing device according to claim 3, characterized in that: The circuit board further comprises a bottom copper foil layer (102), a substrate (103) and an insulating layer (104); the top copper foil layer (101) and the bottom copper foil layer (102) are located on both sides of the substrate (103); the substrate (103) is used to support the top copper foil layer (101) and the bottom copper foil layer (102); and the insulating layer (104) is used to isolate the top copper foil layer (101) and the bottom copper foil layer (102).

5. The touch sensing device according to claim 4, characterized in that: The icon display layer (2) is a transparent or semi-transparent panel, the touch icons and non-touch icons are printed and attached to the transparent or semi-transparent panel, and the substrate (103) is made of waterproof material.

6. The touch sensing device according to claim 1, characterized in that: It also includes a control circuit, the light-emitting module (3) includes a plurality of first light-emitting elements and second light-emitting elements, the positions of the first light-emitting elements correspond one-to-one to the first light-transmitting areas (11), and the positions of the second light-emitting elements correspond one-to-one to the second light-transmitting areas (12); Each of the first light-emitting elements is connected to a corresponding sensing area (13) via the control circuit, and the control circuit is used to control the switching of the first light-emitting element according to the capacitance variation of each of the sensing areas (13).

7. The touch sensing device according to claim 1, characterized in that: The width of the sensing area (13) is greater than or equal to 2 mm, and the interval between the sensing areas (13) is greater than or equal to 0.5 mm.

8. A cooking utensil, characterized in that: The cooking appliance comprises the touch sensing device according to any one of claims 1 to 7.

9. The cooking device according to claim 8, characterized in that: The cooking appliance includes a control system, which is located inside the cooking appliance. The touch sensing device is located outside the cooking appliance. The processing unit of the touch sensing device is connected to the control system. The touch sensing device is used to receive user instructions through touch and send the user instructions to the control system.

10. An integrated stove, characterized in that: The integrated stove comprises the cooking utensil according to claim 8 or 9.

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