Touch panel device

Abstract

The utility model relates to the technical field of light-emitting diode (LED) dimming control, in particular to a touch panel device, which comprises a chip U2, a first pin of the chip U2 is coupled with a resistor R31, a second pin of the chip U2 is coupled with a resistor R15, a third pin and a fourth pin of the chip U2 are jointly coupled with a resistor R4, a fifth pin of the chip U2 is coupled with a resistor R44, and the resistor R44 is coupled with a resistor R32. A sixth pin of the chip U2 is coupled with a resistor R43; according to the utility model, a panel scene function is downloaded and uploaded under the small-resource MCU, the NOR Flash chip is used for communicating with the MCU through the IIC, and the MCU communicates with the touch chip through the serial port to realize panel touch detection, so that the device is mainly used on a product which pays attention to cost control, the resource utilization rate of the MCU is improved, and the device has the advantages of small resource utilization rate, simplicity in hardware use and easiness in understanding.

Description

Technical Field

[0001] This utility model relates to the field of LED dimming control technology, and in particular to a touch panel device. Background Technology

[0002] Given the numerous applications of LED dimming control panels, a typical circuit containing a large number of LEDs requires a microcontroller (MCU) with a large number of pin outputs for control and numerous power resistors for current limiting. This increases the cost of the LED driver circuit. Given the limited resources within the MCU and the small footprint of the external PCB, making efficient use of MCU resources is essential.

[0003] Therefore, this application proposes a touch panel device to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a touch panel device to solve the technical problem that "given the numerous applications of panels in LED dimming control, a circuit containing a large number of LEDs typically requires a microcontroller (MCU) to provide a large number of pin outputs for control and a large number of power resistors for current limiting, which increases the cost of the LED driver circuit. Given the limited resources within the MCU and the small scope of external PCB usage, it is essential to make reasonable use of MCU resources."

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A touch panel device includes a chip U2. Pin 1 of chip U2 is coupled to a resistor R31, pin 2 is coupled to a resistor R15, pins 3 and 4 are jointly coupled to a resistor R4, pin 5 is coupled to a resistor R44, pin 6 is coupled to a resistor R43, pin 7 is coupled to a capacitor C9 via resistor R4, and pin 8 is grounded via capacitor C9. This utility model panel provides a method for downloading and uploading panel scene functions under a low-resource MCU. It uses a NOR Flash chip to communicate with the MCU via IIC, and the MCU then communicates with the touch chip via a serial port to achieve panel touch detection. It is mainly used in products where cost control is important, improving MCU resource utilization. It features low resource utilization, simple hardware operation, and ease of understanding.

[0007] As a preferred embodiment of this utility model, the capacitor C9 is grounded, and the capacitance value of the capacitor C9 is 100nF.

[0008] As a preferred embodiment of this invention, pin 4 of chip U2 is grounded.

[0009] As a preferred technical solution of this utility model, one end of resistors R31, R15, R43 and R44 is provided with an SPI1 interface.

[0010] As a preferred embodiment of this utility model, the SPI1 interface is provided with a pin CS connected to resistor R31, which is used to activate the slave device for communication.

[0011] As a preferred embodiment of this utility model, the SPI1 interface is further provided with a pin MISO connected to resistor R15, which is used to transmit data sent by the slave device to the master device.

[0012] As a preferred embodiment of this invention, the SPI1 interface is further provided with a pin SCK connected to resistor R43 for synchronous data transmission.

[0013] As a preferred embodiment of this utility model, the SPI1 interface is further provided with a pin MOSI connected to resistor R43, which is used to transmit data sent by the master device to the slave device.

[0014] This utility model provides a touch panel device, which has the following beneficial effects:

[0015] This utility model panel provides a method for downloading and uploading panel scene functions under limited MCU resources. It uses a NOR Flash chip to communicate with the MCU via IIC, and the MCU then communicates with the touch chip via serial port to achieve panel touch detection. Primarily used in cost-conscious products, it improves MCU resource utilization. It features low resource utilization, simple hardware operation, and ease of understanding. It solves the technical problem that "in the field of LED dimming control, panels are used in many scenarios. Typically, in a circuit containing a large number of LEDs, we need a microcontroller MCU to provide a large number of pin outputs for control, and a large number of power resistors for current limiting, thus increasing the cost of the LED driver circuit. Given the limited internal resources of the MCU and the small scope of external PCB usage, it is essential to make reasonable use of MCU resources." Attached Figure Description

[0016] Figure 1 This is a circuit diagram of the touch control circuit of this utility model. Detailed Implementation

[0017] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the present invention, and does not imply that every embodiment of the present invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0019] The principle and structure of this utility model will be described in detail below with reference to the accompanying drawings and embodiments:

[0020] refer to Figure 1 A touch panel device includes a chip U2. Pin 1 of the chip U2 is coupled to a resistor R31, pin 2 of the chip U2 is coupled to a resistor R15, pins 3 and 4 of the chip U2 are jointly coupled to a resistor R4, pin 5 of the chip U2 is coupled to a resistor R44, pin 6 of the chip U2 is coupled to a resistor R43, pin 7 of the chip U2 is coupled to a capacitor C9 via resistor R4, and pin 8 of the chip U2 is grounded via capacitor C9.

[0021] Furthermore, in a specific implementation, the capacitor C9 in the above-mentioned touch circuit provided by this utility model embodiment is grounded, and the capacitance value of capacitor C9 is 100nF.

[0022] Furthermore, in a specific implementation, the fourth pin of the chip U2 in the above-mentioned touch circuit provided by this utility model embodiment is grounded.

[0023] Furthermore, in a specific implementation, one end of resistors R31, R15, R43, and R44 in the above-mentioned touch circuit provided by this utility model embodiment is provided with an SPI1 interface.

[0024] Furthermore, in a specific implementation, the SPI1 interface in the above-mentioned touch circuit provided by this utility model embodiment is provided with a pin CS connected to resistor R31, which is used to activate the slave device for communication.

[0025] Furthermore, in a specific implementation, the SPI1 interface in the above-mentioned touch circuit provided by this utility model embodiment is also provided with a pin MISO connected to resistor R15, which is used to transmit data sent by the slave device to the master device.

[0026] Furthermore, in a specific implementation, the SPI1 interface in the above-mentioned touch circuit provided by this utility model embodiment is also provided with a pin SCK connected to resistor R43 for synchronous data transmission.

[0027] Furthermore, in a specific implementation, the SPI1 interface in the above-mentioned touch circuit provided by this utility model embodiment is also provided with a pin MOSI connected to resistor R43, which is used to transmit the data sent by the master device to the slave device.

[0028] Specifically, this utility model panel provides a method for downloading and uploading panel scene functions under a small-resource MCU. It uses a NOR Flash chip to communicate with the MCU via IIC, and the MCU then communicates with the touch chip via serial port to achieve panel touch detection. Primarily used in cost-conscious products, it improves MCU resource utilization. It features low resource utilization, simple hardware operation, and ease of understanding. It solves the technical problem that "in the field of LED dimming control, panels are used in many scenarios. Typically, in a circuit with a large number of LEDs, we need a microcontroller MCU to provide a large number of pin outputs for control, and a large number of power resistors for current limiting, thus increasing the cost of the LED driver circuit. Given the limited internal resources of the MCU and the small area of ​​external PCB usage, it is essential to make reasonable use of MCU resources." The software uses NOR Flash as the storage location for scene data, greatly saving hardware costs compared to using an SD card as the data storage area, thus saving MCU resources.

[0029] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A touch panel device comprising a chip U2, characterized by, One pin of the chip U2 is coupled with a resistor R31, the second pin of the chip U2 is coupled with a resistor R15, the third pin and the fourth pin of the chip U2 are commonly coupled with a resistor R4, the fifth pin of the chip U2 is coupled with a resistor R44, the sixth pin of the chip U2 is coupled with a resistor R43, the seventh pin of the chip U2 is coupled with a capacitor C9 through the resistor R4, and the eighth pin of the chip U2 is grounded through the capacitor C9.

2. The touch panel device according to claim 1, wherein The capacitor C9 is grounded, and the capacitance of the capacitor C9 is 100nF.

3. The touch panel device according to claim 1, wherein The fourth pin of the chip U2 is grounded.

4. The touch panel device according to claim 1, wherein One end of the resistors R31, R15, R43 and R44 is commonly provided with an SPI1 interface.

5. The touch panel device according to claim 4, wherein The SPI1 interface is provided with a pin CS connected with the resistor R31, for activating the slave device to communicate.

6. The touch panel device according to claim 4, wherein The SPI1 interface is also provided with a pin MISO connected with the resistor R15, for transmitting the data sent by the slave device to the master device.

7. The touch panel device according to claim 4, wherein The SPI1 interface is also provided with a pin SCK connected with the resistor R43, for synchronizing the data transmission.

8. The touch panel device according to claim 4, wherein The SPI1 interface is also provided with a pin MOSI connected with the resistor R43, for transmitting the data sent by the master device to the slave device.

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