CN210518261U - Novel capacitive touch switch - Google Patents
Novel capacitive touch switch Download PDFInfo
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- CN210518261U CN210518261U CN201922092388.3U CN201922092388U CN210518261U CN 210518261 U CN210518261 U CN 210518261U CN 201922092388 U CN201922092388 U CN 201922092388U CN 210518261 U CN210518261 U CN 210518261U
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- capacitive touch
- capacitor
- touch
- switch
- touch switch
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Abstract
The utility model discloses a novel capacitanc touch switch, including a PVC film substrate, the several touch-sensitive switch of shaping on PVC film substrate, the electricity connect in a 8 passageway capacitanc touch sensor IC of several touch-sensitive switch, and the electricity connect in a MCU microprocessor of 8 passageway capacitanc touch sensor IC. The utility model provides a novel capacitanc touch switch adopts novel PVC piece film capacitance touch mode, has satisfied the key demand of cancellation traditional machinery physics button, has realized diversified design, and independent detection and control to touch-sensitive switch for touch-sensitive switch can make the product that has different functions, size and appearance, brings very big convenience for whole control process and operation, satisfies more demands.
Description
Technical Field
The utility model relates to a touch switch field especially relates to a novel capacitanc touch switch.
Background
With the elimination of the traditional mechanical physical key switch, the capacitive touch switch becomes the mainstream of the market. At present, most of capacitive touch switches on the market adopt glass as a substrate forming TP touch screen, and the glass belongs to hard materials, so that the design of touch keys has great limitation and can not meet more requirements. Meanwhile, most of the touch switches on the existing TP touch screen are mixed for detection and control, and independent detection and control cannot be realized, so that great inconvenience is brought to the whole control process and operation process, and the capacitance type touch switches are not favorable for meeting the requirements of different functions, sizes and shapes.
SUMMERY OF THE UTILITY MODEL
In view of the above, an object of the utility model is to provide a novel capacitanc touch switch adopts novel PVC piece film capacitor touch mode, has satisfied the key demand of cancellation traditional machinery physics button, has realized diversified design, and independent detection and control to touch-sensitive switch for touch-sensitive switch can make the product that has different functions, size and appearance, brings very big convenience for whole control process and operation, satisfies more demands.
The utility model discloses a reach the technical scheme that above-mentioned purpose adopted and be:
a novel capacitive touch switch is characterized by comprising a PVC film substrate, a plurality of touch inductive switches formed on the PVC film substrate, an 8-channel capacitive touch sensor IC electrically connected with the touch inductive switches, and an MCU microprocessor electrically connected with the 8-channel capacitive touch sensor IC.
As a further improvement of the present invention, the 8-channel capacitive touch sensor IC has a signal input terminal, and the electrode lead of the several touch sensitive switches is connected to the signal input terminal of the 8-channel capacitive touch sensor IC through a FPC socket.
As a further improvement of the present invention, the signal input terminal of the FPC socket and the 8-channel capacitive touch sensor IC is connected to each other via a signal input line set, and the signal input line set mainly includes two touch switch shielding ground wires and a plurality of touch switch signal wires.
As a further improvement of the utility model, the independent detection port of several has on the signal input end, and this independent detection port of several is connected to two touch switch shielding ground wires and several touch switch signal lines respectively alone one-to-one.
As a further improvement of the present invention, the 8-channel capacitive touch sensor IC further has a signal output end, and the signal output end is connected to the MCU microprocessor through a signal output line set, and the signal output line set includes a touch interrupt signal line, a touch I2C data line and a touch I2C clock signal line.
As a further improvement of the present invention, the 8-channel capacitive touch sensor IC is connected to a voltage stabilizing circuit, the voltage stabilizing circuit includes a low dropout linear regulator chip U1, an inductor L1, an inductor L2, and capacitors C1-C6, wherein a 5V power voltage is input from one end of the inductor L1, the other end of the inductor L1 is respectively connected to the 3 rd pin of the low dropout linear regulator chip U1, one end of the capacitor C1, one end of the capacitor C2 and one end of the capacitor C3, the other end of the capacitor C1 is connected to the other end of the capacitor C2 and grounded, the other end of the capacitor C3 is connected to the 1 st pin of the low dropout linear regulator chip U1 and grounded, the 2 nd pin of the low dropout linear regulator chip U1 is respectively connected to one end of the capacitor C4, one end of the capacitor C5, one end of the capacitor C6 is connected to one end of the inductor L2, the other end of the capacitor C5 is connected to the other end of the capacitor, the other end of the inductor L2 outputs a 3.3V supply voltage and is connected to an 8-channel capacitive touch sensor IC.
As a further improvement of the utility model, the touch-sensitive switch is through adopting the electrically conductive silver thick liquid silk screen printing shaping on PVC film substrate.
AS a further improvement of the present invention, the model of the 8-channel capacitive touch sensor IC is AS 1080.
As a further improvement of the utility model, the model of MCU microprocessor is STM8S 207.
The utility model has the advantages that:
(1) the key requirement of canceling the traditional mechanical physical key is met by adopting a novel PVC sheet film capacitive touch mode; and the PVC film substrate is flexible material, is convenient for carry out diversified design to touch-sensitive switch on the PVC film substrate, satisfies more demands.
(2) The touch detection and control are completed by adopting the 8-channel capacitive touch sensor IC, the 8-channel capacitive touch sensor IC can be correspondingly connected with the touch sensing switches one by one, and independent detection and control are realized, so that the touch sensing switches can be made into products with different functions, sizes and shapes, more requirements are met, and great convenience is brought to the whole control process and the operation process.
The above is an overview of the technical solution of the present invention, and the present invention is further explained with reference to the accompanying drawings and the detailed description.
Drawings
FIG. 1 is a block diagram of the overall structure of the present invention;
FIG. 2 is a schematic circuit diagram of the present invention;
FIG. 3 is a schematic diagram of the MCU microprocessor of the present invention;
fig. 4 is a schematic diagram of the middle voltage stabilizing circuit of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose, the following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings and preferred embodiments.
Referring to fig. 1 and 2, an embodiment of the present invention provides a novel capacitive touch switch, including a PVC film substrate 1, a plurality of touch sensitive switches 2 formed on the PVC film substrate 1, an 8-channel capacitive touch sensor IC electrically connected to the plurality of touch sensitive switches 2, and an MCU microprocessor electrically connected to the 8-channel capacitive touch sensor IC.
In the present embodiment, the PVC film substrate 1 is a flexible ultrathin PVC film sheet. Touch-sensitive switch 2 is through adopting electrically conductive silver thick liquid silk screen printing shaping on PVC film substrate 1, in concrete processing production, can be at 1 back rubberizing of PVC film substrate, hug closely during production product operation panel inboard can, operation panel's material is plastic, insulating material such as glass all can.
Adopt PVC film substrate 1 as the substrate of shaping touch-sensitive switch 2, PVC film substrate 1 is flexible material, is convenient for carry out diversified design to touch-sensitive switch 2 on PVC film substrate 1, satisfies more demands.
Meanwhile, 8-channel capacitive touch sensor ICs are adopted to complete touch detection and control, and the 8-channel capacitive touch sensor ICs can be correspondingly connected with the plurality of touch induction switches 2 one by one to realize independent detection and control, so that the touch induction switches 2 can be made into products with different functions, sizes and shapes, more requirements are met, and great convenience is brought to the whole control process and the operation process.
In the present embodiment, the 8-channel capacitive touch sensor IC has a signal input terminal, and the electrode leads 21 of the touch sensitive switches 2 are connected to the signal input terminal of the 8-channel capacitive touch sensor IC through an FPC socket 3.
Specifically, the FPC socket 3 is connected to a signal input terminal of the 8-channel capacitive touch sensor IC through a signal input line group 4, and the signal input line group 4 mainly includes two touch switch shielding ground lines and a plurality of touch switch signal lines.
Specifically, as shown in fig. 2, the signal input terminal has a plurality of independent detection ports 5, and the independent detection ports 5 are respectively and independently connected to two touch switch shielding ground lines and a plurality of touch switch signal lines in a one-to-one correspondence manner. Therefore, the 8-channel capacitive touch sensor IC can independently detect and control each touch inductive switch 2, so that the touch inductive switches 2 can be made into products with different functions, sizes and shapes, more requirements are met, and the sensitivity of each touch inductive switch 2 can be respectively and independently adjusted.
In this embodiment, the 8-channel capacitive touch sensor IC further has a signal output terminal, the signal output terminal is connected to the MCU microprocessor through a signal output line group 6, and the signal output line group 6 includes a touch interrupt signal line, a touch I2C data line, and a touch I2C clock signal line.
Specifically, the model number of the 8-channel capacitive touch sensor IC of this embodiment is AS1080, AS shown in fig. 2. Meanwhile, the model of the MCU microprocessor is STM8S207, as shown in FIG. 3.
When a finger touches the touch-sensitive switch 2, the touch-sensitive switch 2 introduces external capacitance due to the finger contact, and the corresponding electrode current changes; after the 8-channel capacitive touch sensor IC detects the current change of the corresponding electrode, the internal part immediately calculates and processes, and outputs an interrupt request to the MCU microprocessor; and when the MCU microprocessor receives the interrupt request, the data of the 8-channel capacitive touch sensor IC is immediately read and processed, and the function operation of the related touch key is executed.
In this embodiment, the 8-channel capacitive touch sensor IC is connected to a voltage regulator circuit, as shown in fig. 4, the voltage regulator circuit includes a low-dropout linear regulator chip U1, an inductor L1, an inductor L2, and capacitors C1-C6, wherein a 5V power voltage is input from one end of the inductor L1, the other end of the inductor L1 is connected to the 3 rd pin of the low-dropout linear regulator chip U1, one end of the capacitor C1, one end of the capacitor C2 and one end of the capacitor C3, the other end of the capacitor C1 is connected to the other end of the capacitor C2 and grounded, the other end of the capacitor C3 is connected to the 1 st pin of the low-dropout linear regulator chip U1 and grounded, the 2 nd pin of the low-dropout linear regulator chip U1 is connected to one end of the capacitor C4, one end of the capacitor C5 and one end of the capacitor C2 are connected to one end of the inductor L2, the other end of the capacitor C5 is connected to, the other end of the inductor L2 outputs a 3.3V power voltage, and is connected to the 8-channel capacitive touch sensor IC to provide a stable 3.3V operating voltage for the 8-channel capacitive touch sensor IC.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that other structures obtained by adopting the same or similar technical features as the above embodiments of the present invention are all within the protection scope of the present invention.
Claims (9)
1. A novel capacitive touch switch is characterized by comprising a PVC film substrate, a plurality of touch inductive switches formed on the PVC film substrate, an 8-channel capacitive touch sensor IC electrically connected with the touch inductive switches, and an MCU microprocessor electrically connected with the 8-channel capacitive touch sensor IC.
2. The novel capacitive touch switch of claim 1, wherein the 8-channel capacitive touch sensor IC has a signal input, and the electrode leads of the plurality of touch sensitive switches are connected to the signal input of the 8-channel capacitive touch sensor IC through an FPC jack.
3. The novel capacitive touch switch of claim 2, wherein the FPC jack is connected to the signal input of the 8-channel capacitive touch sensor IC via a signal input line set, and the signal input line set mainly comprises two touch switch shielding ground lines and a plurality of touch switch signal lines.
4. The novel capacitive touch switch of claim 3, wherein the signal input terminal has a plurality of independent detection ports, and the independent detection ports are respectively connected to two touch switch shielding ground lines and a plurality of touch switch signal lines in a one-to-one correspondence.
5. The novel capacitive touch switch of claim 1, wherein the 8-channel capacitive touch sensor IC further comprises a signal output terminal, the signal output terminal is connected to the MCU microprocessor through a signal output line set, the signal output line set comprises a touch interrupt signal line, a touch I2C data line, and a touch I2C clock signal line.
6. The novel capacitive touch switch of claim 1, wherein the 8-channel capacitive touch sensor IC is connected to a voltage regulator circuit comprising a low dropout regulator U1, an inductor L1, an inductor L2, and capacitors C1-C6, wherein a 5V power voltage is inputted from one end of the inductor L1, the other end of the inductor L1 is connected to the No. 3 pin of the low dropout regulator U1, one end of the capacitor C1, one end of the capacitor C2 and one end of the capacitor C3, the other end of the capacitor C1 is connected to the other end of the capacitor C2 and grounded, the other end of the capacitor C3 and the No. 1 pin of the low dropout regulator U1 are grounded, the No. 2 pin of the low dropout regulator U1 is connected to one end of the capacitor C4, one end of the capacitor C5, one end of the capacitor C6 and one end of the inductor L2, the other end of the capacitor C5 and the other end of the capacitor C6 and grounded, the other end of the capacitor C4 is grounded, and the other end of the inductor L2 outputs 3.3V power voltage and is connected to an 8-channel capacitive touch sensor IC.
7. The novel capacitive touch switch of claim 1, wherein the touch sensitive switch is formed by screen printing a PVC film substrate with a conductive silver paste.
8. The novel capacitive touch switch of any of claims 1 to 7, wherein the 8-channel capacitive touch sensor IC is model AS 1080.
9. A novel capacitive touch switch as claimed in any one of claims 1 to 7, wherein the MCU microprocessor is of the type STM8S 207.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922092388.3U CN210518261U (en) | 2019-11-28 | 2019-11-28 | Novel capacitive touch switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922092388.3U CN210518261U (en) | 2019-11-28 | 2019-11-28 | Novel capacitive touch switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210518261U true CN210518261U (en) | 2020-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922092388.3U Active CN210518261U (en) | 2019-11-28 | 2019-11-28 | Novel capacitive touch switch |
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| Country | Link |
|---|---|
| CN (1) | CN210518261U (en) |
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2019
- 2019-11-28 CN CN201922092388.3U patent/CN210518261U/en active Active
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