Integrated film integrating pressure sensing structure and heating structure and cushion

Abstract

The invention discloses an integrated thin film integrating a pressure sensing structure and a heating structure and a cushion, the integrated thin film comprises a thin film base layer, the integrated thin film also comprises a heating function layer, the heating function layer is printed on a first surface of the thin film base layer and forms a heating loop capable of conducting current; the integrated thin film further comprises a pressure sensing layer, the pressure sensing layer is formed by printing a conductive pressure-sensitive material on the second face of the thin film base layer or printing the conductive pressure-sensitive material on the surface of the heating function layer in an overlapped mode to form a sensing area capable of responding to pressure changes, and the sensing area and the heating loop area are integrally arranged on the thin film base layer. Compared with the prior art, the key point of the integrated film is that the heating and pressure sensing functions are integrated in the same film base layer, so that the function combination of high integration level and high efficiency is realized. According to the integrated thin film, the number and the thickness of components are greatly reduced, the manufacturing process is simplified, the production cost is reduced, and the safety and the reliability of a product are remarkably improved.

Description

Technical Field

[0001] The invention relates to the field of sensor technology, in particular to an integrated film and a pad integrating a pressure sensing structure and a heating structure. Background Art

[0002] In the current field of heating equipment and sensor technology, many products require separate heating components and pressure sensing components. For example, in applications such as smart pet mats and heating pads, electric heating wires or other heating elements are usually used to provide heating, while external pressure sensors or switches are used to detect pressure or control the on and off of the heating function. Although this method can achieve the functions of heating and pressure detection, it has the following shortcomings:

[0003] 1. Complex structure: Since the heating element and pressure sensing element exist independently, complex circuits and physical connections are required, which increases the thickness and manufacturing difficulty of the product and limits its application in thin and light designs.

[0004] 2. High cost: Independent heating and pressure sensing systems require additional components and materials, which increases production costs. At the same time, complex manufacturing processes further increase costs.

[0005] 3. Safety issues: Traditional heating devices, such as heating wires, have potential safety hazards, especially in environments where they are used for a long time or by pets, local overheating or circuit aging may occur.

[0006] Although the existing technology can meet certain needs, it has obvious deficiencies in terms of safety, cost control, product design integration, etc. Therefore, a more efficient, safer and simplified integrated solution is urgently needed. Summary of the invention

[0007] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide an integrated film and a pad that integrates a pressure sensing structure and a heating structure. The purpose of designing the integrated film is to reduce the number and thickness of components, simplify the manufacturing process, reduce production costs, and significantly improve the safety and reliability of the product.

[0008] To solve the above technical problems, the present invention is implemented by the following scheme: an integrated film integrating a pressure sensing structure and a heating structure of the present invention comprises a film base providing a stable mechanical support, the integrated film further comprises a heating function layer, the heating function layer is printed on the first surface of the film base and forms a heating circuit capable of conducting current;

[0009] The integrated film also includes a pressure sensing layer, which is a conductive pressure-sensitive material printed on the second surface of the film base layer or printed on the surface of the heating functional layer in an overlapping manner to form a sensing area that can respond to pressure changes. The sensing area is integrated with the heating circuit area and is arranged on the film base layer.

[0010] Furthermore, the heating functional layer is printed on the first surface of the film base layer by a screen printing process.

[0011] Furthermore, the pressure sensing layer is printed on the second surface of the film base layer by a screen printing process or is printed on the surface of the heating functional layer in a superimposed manner.

[0012] Furthermore, the film base layer is a PET film substrate layer.

[0013] Furthermore, the heating function layer adopts one or a combination of horizontal and vertical line staggered distribution printing, curved line staggered distribution printing, and special-shaped line staggered printing.

[0014] Furthermore, the pressure sensing layer adopts a matrix structure pressure sensing layer formed by combining a dot array and a line array to form a passage.

[0015] Furthermore, the matrix structure pressure sensing layer includes:

[0016] Dot-shaped conductive pressure-sensitive coating distributed in a matrix;

[0017] The linear conductive pressure-sensitive coating is distributed in a matrix column, any two dot-shaped conductive pressure-sensitive coatings distributed laterally are connected by a linear conductive pressure-sensitive coating, and one of the dot-shaped conductive pressure-sensitive coatings distributed longitudinally is connected by a linear conductive pressure-sensitive coating.

[0018] Furthermore, the integrated film also includes an external control unit, and the control unit has a control circuit, and the control circuit is electrically connected to the heating functional layer and the pressure sensing layer respectively.

[0019] Furthermore, the control circuit receives the pressure signal transmitted by the pressure sensing layer to control the on and off of the heating functional layer;

[0020] The control circuit is also provided with a regulating circuit, which is used to regulate the input current of the heating functional layer (2).

[0021] A mat of the present invention comprises all structures of an integrated film.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. The key difference between the integrated film of the present invention and the prior art is that the heating and pressure sensing functions are integrated into the same film base layer, achieving a high integration and high efficiency functional combination. The integrated film of the present invention greatly reduces the number and thickness of components, simplifies the manufacturing process, reduces production costs, and significantly improves the safety and reliability of the product.

[0024] 2. Simplified structure: The present invention integrates heating and pressure sensing functions on the same PET film, avoiding the complex structure of the traditional solution that requires the independent installation of heating elements and pressure sensors. The physical structure of the product is simplified, the thickness of the product is reduced, making it lighter, thinner and more flexible, and it is particularly suitable for applications in fields with high requirements for space and flexibility.

[0025] 3. Cost reduction: Integrating heating and pressure sensing functions into a thin film through the screen process not only reduces the amount of materials required, but also simplifies the manufacturing process. This integrated solution effectively reduces production costs and can significantly improve production efficiency and reduce material waste in large-scale manufacturing.

[0026] 4. Energy consumption optimization: Since the heating function in the present invention can be intelligently turned on and off according to the pressure sensing signal, unnecessary continuous heating is avoided, thereby reducing overall energy consumption. Especially when applied to pet mats, the mat will only be heated when the pet is on it, and the heating will automatically stop when the pet leaves. This intelligent control mode realizes efficient use of energy and extends the service life of the product.

[0027] 5. Improved safety: The thermally conductive material and unique circuit design used in this invention ensure uniformity during the heating process, reducing the risk of local overheating that may occur in traditional heating elements. At the same time, by integrating the pressure sensing function, the state of the object can be monitored in real time and the heating can be automatically turned on and off, further improving the safety of the product, which is particularly suitable for long-term use scenarios such as pet mats or household heating devices.

[0028] 6. Easy operation: The product of the present invention can intelligently turn on or off the heating function according to the external pressure, and users can enjoy the convenience brought by intelligent control without complicated operations. This automated operation mode makes the product easier to use and improves the user experience.

[0029] 7. Strong application flexibility: Due to the flexible characteristics of PET film, the product of the present invention has strong plasticity and can be flexibly applied and designed according to different needs, suitable for a variety of scenarios, such as smart home devices, wearable devices, health monitoring equipment, etc. Compared with traditional rigid heating and sensor elements, the flexible design of the present invention provides a broader space for multifunctional integration and diversified applications of products.

[0030] In summary, the present invention not only effectively solves the complex structure, high cost and safety problems in the prior art by integrating pressure sensing and heating functions, but also provides an efficient integrated solution with good user experience, energy consumption optimization and simplified structure, which has significant technical advantages and market application potential. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of the integrated film of the present invention.

[0032] Figure 2 This is a layout diagram of the heating functional layer and the pressure sensing layer of the present invention.

[0033] Figure 3 This is the circuit diagram of the master control interface J1 of the present invention.

[0034] Figure 4 This is the circuit diagram of the regulating control switch of the present invention.

[0035] Figure 5 Schematic diagram of the regulating circuit of the present invention.

[0036] Figure 6 The present invention is a circuit diagram connected to an LCD display screen.

[0037] Markings in the attached figure: thin film base layer 1, heating function layer 2, pressure sensing layer 3, control unit 4, connection port 5, LCD display screen 6. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more explicit definition of the protection scope of the present invention. Obviously, the embodiments described in the present invention are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0039] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0040] Embodiment 1: The specific structure of the present invention is as follows:

[0041] Please refer to the attached Figure 1-2 The present invention provides an integrated film integrating a pressure sensing structure and a heating structure, including a film base layer 1 that provides stable mechanical support. The film base layer 1 is a PET film substrate layer. The PET film substrate layer is elastic and can bend and deform under the action of external force, and can recover when no external force is applied.

[0042] The integrated film also includes a heating functional layer 2, which is printed on the first surface of the film base layer 1 and forms a heating circuit capable of conducting current. Specifically, the heating functional layer is printed on the first surface of the film base layer 1 by screen printing. A connection port 5 is led out from each end of the heating functional layer 2, and the two connection ports 5 are connected to the outlet of the film base layer 1 through a line and connected to the control unit 4. The heating functional layer 2 is printed with a polymer material with high conductivity and uniform thermal conductivity, and the heating effect after power is turned on is controlled by circuit design. When power is turned on, the heating functional layer 2 on the surface of the film heats up rapidly to a preset temperature, and can adjust the heating temperature according to the control signal input from the outside. This design makes the heating uniform and safe, and reduces the risk of local overheating.

[0043] The integrated film also includes a pressure sensing layer 3, which is a conductive pressure-sensitive material printed on the second surface of the film base layer 1 or printed on the surface of the heating functional layer 2 in an overlapping manner, to form a sensing area that can respond to pressure changes, and the sensing area is integrated with the heating circuit area and arranged on the film base layer 1. Specifically, the pressure sensing layer 3 is printed on the second surface of the film base layer 1 or printed on the surface of the heating functional layer 2 in an overlapping manner through a screen printing process. The pressure sensing layer 3 prints a material with conductive properties on the surface of the film. The pressure sensing layer 3 will undergo a change in resistance when subjected to force, and the pressure applied by the object can be accurately detected through the detection circuit. When the pressure signal is transmitted to the control circuit, the control circuit controls the heating functional layer 2 to be energized, and the heating functional layer 2 generates heat after being powered on. The pressure sensing layer 3 is connected to the control unit 4 through a line.

[0044] When the PET film senses external pressure (for example, a pet enters the mat), the pressure sensing layer 3 detects the pressure signal and transmits it to the control circuit through the circuit. After the control circuit processes the signal, it controls the heating function layer 2 to be powered on, and the heating function layer 2 on the surface of the film starts to heat up. When the pressure disappears (for example, the pet leaves the mat), the pressure sensing layer 3 is reset, the pressure signal disappears, and the control circuit controls the heating function layer 2 to be powered off, thereby realizing intelligent control of automatic heating and stopping heating.

[0045] Embodiment 2:

[0046] The heating function layer 2 is printed in a staggered distribution of horizontal and vertical lines, staggered distribution of curves, staggered distribution of special-shaped lines, or a combination thereof. In this embodiment, staggered distribution of horizontal and vertical lines is preferred.

[0047] The pressure sensing layer 3 is a pressure sensing layer with a matrix structure that combines a dot array and a line array to form a passage. The matrix structure pressure sensing layer includes:

[0048] Dot-shaped conductive pressure-sensitive coating distributed in a matrix;

[0049] The linear conductive pressure-sensitive coating is distributed in a matrix column, any two dot-shaped conductive pressure-sensitive coatings distributed laterally are connected by a linear conductive pressure-sensitive coating, and one of the dot-shaped conductive pressure-sensitive coatings distributed longitudinally is connected by a linear conductive pressure-sensitive coating.

[0050] Embodiment 3:

[0051] like Figure 3-6 As shown, the integrated film further includes an external control unit 4, the control unit 4 has a control circuit, and the control circuit is electrically connected to the heating function layer 2 and the pressure sensing layer 3. The control circuit receives the pressure signal transmitted by the pressure sensing layer 3 to control the on and off of the heating function layer 2; the control circuit is also provided with a regulating circuit, and the regulating circuit is used to regulate the input current of the heating function layer 2.

[0052] like Figure 3 As shown, the control circuit is provided with a master control interface J1, which is connected to the MCU processor of the control circuit. The master control interface J1 is a 36-pin interface, and the master control interface J1 is provided with two ground pins, namely, 15-pin AGND and 36-pin DGND. The power input end 35 pins of the master control interface J1 are respectively connected to the positive poles of the resistor R2, the capacitor C3, and the polar capacitor C4, the other end of the resistor R2 is connected to the +5V voltage, the other end of the capacitor C3 is grounded DGND, and the negative end of the polar capacitor C4 is grounded DGND. The power transmission end 16 pins of the master control interface J1 are respectively connected to the positive poles of the resistor R1, the capacitor C1, and the polar capacitor C2, the other end of the resistor R1 outputs the AVDD5V power supply, the other end of the capacitor C1 is grounded AGND, and the negative pole of the polar capacitor C2 is grounded AGND. The power transmission end 34 pins of the master control interface J1 also outputs a 3V3 power supply.

[0053] like Figure 4 As shown, Figure 4 This is the circuit diagram of the regulating control switch of the present invention. Figure 4 There are two groups of control knobs in the apparatus, the two groups of control knobs are respectively a first control knob RE1 and a second control knob RE2.

[0054] The first control knob RE1 is provided with 5 pins, and the second pin of the first control knob RE1 and the fourth pin of the first control knob RE1 are both grounded DGND. The first pin of the first control knob RE1 is connected to the capacitor C7 and the 27th pin FX2 ENC A of the master control interface J1, and the other end of the capacitor C7 is grounded DGND. The third pin of the first control knob RE1 is connected to the capacitor C8 and the 28th pin FX2 ENC B of the master control interface J1, and the other end of the capacitor C8 is grounded DGND. The fifth pin of the first control knob RE1 is connected to the 29th pin FX2 ENC-BTN of the master control interface J1.

[0055] The second control knob RE2 is provided with 5 pins, and the second pin of the second control knob RE2 and the fourth pin of the second control knob RE2 are both grounded DGND. The first pin of the second control knob RE2 is connected to the capacitor C9 and the 26-pin FX1 ENC A of the master control interface J1, and the other end of the capacitor C9 is grounded DGND. The third pin of the second control knob RE2 is connected to the capacitor C10 and the 30-pin FX1 ENC B of the master control interface J1, and the other end of the capacitor C10 is grounded DGND. The fifth pin of the second control knob RE2 is connected to the 32-pin FX1 ENC-BTN of the master control interface J1.

[0056] Figure 5 Schematic diagram of the regulating circuit of the present invention. Figure 5 Three groups of regulating circuits are arranged, wherein the first group of regulating circuits and the second group of regulating circuits are each provided with three buttons, and the third group of regulating circuits is provided with five regulating buttons.

[0057] One ends of the three buttons of the first group of regulating circuits are all grounded DGND, and the other ends of the three buttons of the first group of regulating circuits are respectively connected to the 20-pin FX1 UP, the 18-pin FX1 DN, and the 24-pin FX1 MUTE of the master control interface J1.

[0058] One ends of the three buttons of the second group of regulating circuits are all grounded DGND, and the other ends of the three buttons of the second group of regulating circuits are respectively connected to the 19th pin FX2 UP, the 21st pin FX2 DN, and the 25th pin FX2 MUTE of the master control interface J1.

[0059] The first ends of the five buttons in the third group of adjustment circuits are interconnected and grounded DNGD. Among the five buttons, the second ends of four of them are connected to resistors with different resistance values, which are 12K, 3.6K, 68K and 39K respectively. The other ends of the four resistors with different resistance values ​​are interconnected and connected to pin 17 BT KEY ADC of the master control interface J1 and the second end of the fifth button.

[0060] By selecting different resistors through key control, the magnitude of the current is changed, so that the current entering the heating function layer 2 changes, and the heating function layer 2 generates heat according to the magnitude of the current.

[0061] Figure 6 The circuit diagram of the present invention connected to the LCD display screen. The control part 4 of the present invention is also electrically connected to the LCD display screen 6. The control part 4 is adjusted to have a P1 interface, and the P1 interface is used to connect the LCD display screen 6. The electrical input pin of the P1 interface is a 5V input pin, which is connected to a resistor R3, a positive electrode of a polar capacitor C6, and a capacitor C5. The other end of the resistor R3 is connected to a +5V voltage, the negative electrode of the polar capacitor C6 is grounded DGND, and the other end of the capacitor C5 is grounded DGND. The LCD display screen 6 is used to display the working state of the heating function layer 2.

[0062] Embodiment 4:

[0063] A mat comprises the integrated film of embodiments 1 to 3. The integrated film is sewn into an insulating cloth or an insulating leather to form a mat.

[0064] In summary, the key difference between the integrated film of the present invention and the prior art is that the heating and pressure sensing functions are integrated into the same film base layer, achieving a high integration and high efficiency functional combination. The integrated film of the present invention greatly reduces the number and thickness of components, simplifies the manufacturing process, reduces production costs, and significantly improves the safety and reliability of the product.

[0065] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An integrated film integrating a pressure sensing structure and a heating structure, comprising a film substrate (1) providing stable mechanical support, characterized in that: The integrated film further comprises a heating functional layer (2), the heating functional layer (2) being printed on the first surface of the film base layer (1) and forming a heating circuit capable of conducting electric current; The integrated film further comprises a pressure sensing layer (3), wherein the pressure sensing layer (3) is a conductive pressure-sensitive material printed on the second surface of the film base layer (1) or printed on the surface of the heating functional layer (2) in a superimposed manner, so as to form a sensing area that can respond to pressure changes, and the sensing area is integrated with the heating circuit area and arranged on the film base layer (1).

2. The integrated film integrating a pressure sensing structure and a heating structure according to claim 1, characterized in that: The heating functional layer is printed on the first surface of the film base layer (1) by means of a screen printing process.

3. The integrated film integrating a pressure sensing structure and a heating structure according to claim 1, characterized in that: The pressure sensing layer (3) is printed on the second surface of the film base layer (1) by a screen printing process or is printed on the surface of the heating functional layer (2) in a superimposed manner.

4. The integrated film integrating a pressure sensing structure and a heating structure according to claim 1, characterized in that: The film base layer (1) is a PET film substrate layer.

5. The integrated film integrating a pressure sensing structure and a heating structure according to claim 1, characterized in that: The heating function layer (2) is printed by staggered distribution of horizontal and vertical lines, staggered distribution of curves, and staggered printing of special-shaped lines, or a combination thereof.

6. The integrated film integrating a pressure sensing structure and a heating structure according to claim 1, characterized in that: The pressure sensing layer (3) is a pressure sensing layer with a matrix structure that combines a point array and a line array to form a passage.

7. The integrated film integrating a pressure sensing structure and a heating structure according to claim 6, characterized in that: The matrix structure pressure sensing layer comprises: Dot-shaped conductive pressure-sensitive coating distributed in a matrix; The linear conductive pressure-sensitive coating is distributed in a matrix column, any two dot-shaped conductive pressure-sensitive coatings distributed laterally are connected by a linear conductive pressure-sensitive coating, and one of the dot-shaped conductive pressure-sensitive coatings distributed longitudinally is connected by a linear conductive pressure-sensitive coating.

8. The integrated film integrating a pressure sensing structure and a heating structure according to claim 1, characterized in that: The integrated film further comprises an external control unit (4), wherein the control unit (4) comprises a control circuit, and the control circuit is electrically connected to the heating functional layer (2) and the pressure sensing layer (3) respectively.

9. The integrated film integrating a pressure sensing structure and a heating structure according to claim 8, characterized in that: The control circuit receives the pressure signal transmitted by the pressure sensing layer (3) and controls the on and off of the heating functional layer (2); The control circuit is also provided with a regulating circuit, which is used to regulate the input current of the heating functional layer (2).

10. A mat, characterized in that: The integrated film comprises the integrated film as described in any one of claims 1 to 9.

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