CN215769692U

CN215769692U - Control board card applied to touch equipment

Info

Publication number: CN215769692U
Application number: CN202121412135.0U
Authority: CN
Inventors: 李衡均
Original assignee: Shenzhen Ever Glory Photoelectricity Co ltd
Current assignee: Dongguan Youlian Hengda Optoelectronics Co ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2022-02-08
Anticipated expiration: 2031-06-24

Abstract

The utility model discloses a control board card applied to touch equipment, which comprises an isolation module, a power module, a touch chip, a booster circuit, a signal attenuator, a touch sensor and an attenuation resistor, wherein the power module, the touch chip and the booster module are respectively connected with the isolation module, the booster module is also connected with the touch chip, the signal attenuator, the touch sensor and the attenuation resistor are sequentially connected, and the attenuation resistor is also connected with the touch chip. By using the utility model, the EMC interference can be reduced and the external interference frequency can be isolated. The control board card applied to the touch equipment can be widely applied to the field of application board cards.

Description

Control board card applied to touch equipment

Technical Field

The utility model relates to the field of application board cards, in particular to a control board card applied to touch equipment.

Background

With the continuous development and popularization of the current electronic technology, people hope to have more interaction modes along with the development of the technology. In this case, the touch scheme becomes the most choice. Human-computer interaction in the fields of industry, business, navigation and the like is increasingly applied. However, different uses and environments have different requirements on the interference and the anti-interference generated by the product. At present, most of the software debugging methods finish anti-interference and interference through software debugging, a large amount of debugging time is occupied by the debugging method, and the result does not necessarily meet the requirements of customers.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problems, an object of the present invention is to provide a control board card applied to a touch device, which can reduce EMC interference and isolate external interference frequency.

The technical scheme includes that the control board card applied to the touch equipment comprises an isolation module, a power module, a touch chip, a booster circuit, a signal attenuator, a touch sensor and an attenuation resistor, wherein the power module, the touch chip and the booster module are respectively connected with the isolation module, the booster module is also connected with the touch chip, the signal attenuator, the touch sensor and the attenuation resistor are sequentially connected, and the attenuation resistor is also connected with the touch chip.

Further, the touch screen comprises a crystal oscillator module, wherein the crystal oscillator module is connected with the touch chip.

Further, the isolation module comprises an input power isolation module and a USB signal isolation module.

Further, the input power isolation module comprises a first capacitor, a first inductor, a second capacitor, an isolation IC and a third capacitor, the first capacitor is connected with the first end of the first inductor, the second end of the first inductor is connected with the first end of the second capacitor and connected with the second interface of the isolation IC, the second end of the second capacitor is connected with the first interface of the isolation IC, the third interface of the isolation IC is connected with the first end of the third capacitor, and the fourth interface of the isolation IC is connected with the second end of the third capacitor.

Further, the USB signal isolation module includes an adm 4160 chip, a fourth capacitor, a fifth capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor, a sixth capacitor, and a seventh capacitor, wherein a first pin of the adm 4160 chip is connected to a first end of the fourth capacitor, a third pin, a fourth pin, and a fifth pin of the adm 4160 chip are connected to a first end of the fifth capacitor, a second end of the fourth capacitor and a second end of the fifth capacitor are connected to a second pin of the adm 4160 chip, the sixth pin of the adm 4160 chip is connected to the first resistor, a seventh pin of the adm 4160 chip is connected to the second resistor, a tenth pin of the adm 4160 chip is connected to the third resistor, an eleventh pin of the adm 4160 chip is connected to the fourth resistor, a twelfth pin, a thirteenth pin, and a fourteenth pin of the adm 4160 chip are connected to a first end of the sixth capacitor, and a sixteenth pin of the ADUM4160 chip is connected with a first end of a seventh capacitor, and a second end of the sixth capacitor is connected with a second end of the seventh capacitor and is connected with a fifteenth pin of the ADUM4160 chip.

Further, the boost module comprises an eighth capacitor, a second inductor, a boost IC, a fifth resistor, a first diode, a sixth resistor, a seventh resistor, a ninth capacitor and a tenth capacitor, the first end of the eighth capacitor and the first end of the second inductor are connected with each other and connected with a fifth pin of the boost IC, a fourth pin of the boost IC is connected with the first end of the fifth resistor, the second end of the eighth capacitor and the second end of the fifth resistor are connected with each other and grounded, the second end of the second inductor and the anode of the first diode are connected with each other and connected with the first pin of the boost IC, the cathode of the first diode, the first end of the sixth resistor, the first end of the ninth capacitor and the first end of the tenth capacitor are connected, the second end of the sixth resistor, the second end of the ninth capacitor and the first end of the seventh resistor are connected with each other and connected with the third pin of the boost IC, the second pin, the second end of the boost IC, the first end of the sixth resistor, the first end of the ninth capacitor and the first end of the seventh resistor are connected with each other and connected with the third pin of the boost IC, And the second end of the seventh resistor and the second end of the tenth capacitor are connected with the ground.

The utility model has the beneficial effects that: aiming at the condition of large EMC interference of the existing product, the existing product is redesigned, the EMC interference is reduced, the external input signal is isolated and then input into the control key control card, the external interference frequency is isolated, and the touch emission signal in the board is attenuated through the attenuation resistor, so that the product further meets the requirement of a customer on interference resistance.

Drawings

Fig. 1 is a block diagram of a control board card applied to a touch device according to the present invention;

FIG. 2 is a partial circuit diagram of an input power isolation module according to an embodiment of the present invention;

FIG. 3 is a partial circuit diagram of a USB signal isolation module according to an embodiment of the present invention;

FIG. 4 is a partial circuit diagram of a boost module in accordance with an embodiment of the present invention;

fig. 5 is a partial circuit diagram of a power module in accordance with an embodiment of the present invention.

Reference numerals: l1, a first inductor; c1, a first capacitance; c2, a second capacitor; c3, a third capacitance; c4, a fourth capacitance; c5, a fifth capacitance; r1, a first resistor; r2, a second resistor; r3, third resistor; r4, fourth resistor; r5, fifth resistor; c6, a sixth capacitor; c7, a seventh capacitance; c8, an eighth capacitor; l2, a second inductor; r5, fifth resistor;

d1, a first diode; r6, sixth resistor; r7, seventh resistor; c9, ninth capacitance; c10, tenth capacitance; u1, isolated IC; u2, boost IC.

Detailed Description

The utility model is described in further detail below with reference to the figures and the specific embodiments. The step numbers in the following embodiments are provided only for convenience of illustration, the order between the steps is not limited at all, and the execution order of each step in the embodiments can be adapted according to the understanding of those skilled in the art.

It is noted that, as used in this disclosure, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any combination of one or more of the associated listed items.

Referring to fig. 1, the utility model provides a control board card applied to a touch device, which comprises an isolation module, a power module, a touch chip, a boost circuit, a signal attenuator, a touch sensor and an attenuation resistor, wherein the power module, the touch chip and the boost module are respectively connected with the isolation module, the boost module is further connected with the touch chip, the signal attenuator, the touch sensor and the attenuation resistor are sequentially connected, and the attenuation resistor is further connected with the touch chip.

Specifically, the power module may be a power module that converts 5V to 3.3V, and referring to fig. 5, in addition, both the signal attenuation and the attenuation resistor are used to attenuate the touch emission signal in the board, so that compared with a preceding-stage product, better interference resistance and interference to the outside are achieved.

Further, as a preferred embodiment of the present invention, the touch panel further includes a crystal oscillator module, and the crystal oscillator module is connected to the touch chip.

Further as a preferred embodiment of the present invention, the isolation module includes an input power isolation module and a USB signal isolation module.

As a further preferred embodiment of the present invention, the input power isolation module includes a first capacitor C1, a first inductor L1, a second capacitor C2, an isolation ICU1, and a third capacitor C3, the first capacitor C1 is connected to a first end of the first inductor L1, a second end of the first inductor L1 is connected to a first end of the second capacitor C2 and connected to a second interface of the isolation ICU1, a second end of the second capacitor C2 is connected to a first interface of the isolation ICU1, a third interface of the isolation ICU1 is connected to a first end of the third capacitor C3, and a fourth interface of the isolation ICU1 is connected to a second end of the third capacitor C3.

Specifically, input power isolation module referring to fig. 2, the isolation IC employs the B _ S-1WR2 series.

As a further preferred embodiment of the present invention, the USB signal isolating module includes an ADUM4160 chip, a fourth capacitor C4, a fifth capacitor C5, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a sixth capacitor C6, and a seventh capacitor C7, the first pin of the ADUM4160 chip is connected to the first end of the fourth capacitor C4, the third pin, the fourth pin, and the fifth pin of the ADUM4160 chip are connected to the first end of the fifth capacitor C5, the second end of the fourth capacitor C4 and the second end of the fifth capacitor C5 are connected to the second pin of the ADUM4160 chip, the sixth pin of the ADUM4160 chip is connected to the first resistor R1, the seventh pin of the ADUM4160 chip is connected to the second resistor R2, the tenth pin of the ADUM4160 chip is connected to the third pin of the ADUM 4160R 3, the eleventh pin of the ADUM4160 chip is connected to the twelfth pin of the ADUM4160 chip, and the fourth pin of the ADUM4160 chip is connected to the eleventh resistor R4, The thirteenth pin and the fourteenth pin are connected and connected with a first end of a sixth capacitor C6, the sixteenth pin of the ADUM4160 chip is connected with a first end of a seventh capacitor C7, and the second end of the sixth capacitor C6 and the second end of the seventh capacitor C7 are connected and connected with a fifteenth pin of the ADUM4160 chip.

Specifically, the USB signal isolation module refers to fig. 3.

As a further preferred embodiment of the present invention, the boost module includes an eighth capacitor C8, a second inductor L2, a boost ICU2, a fifth resistor R5, a first diode D1, a sixth resistor R6, a seventh resistor R7, a ninth capacitor C9, and a tenth capacitor C10, a first end of the eighth capacitor C8 and a first end of the second inductor L2 are connected to and connected to a fifth pin of the boost ICU2, a fourth pin of the boost IC is connected to a first end of the fifth resistor R5, a second end of the eighth capacitor C8 and a second end of the fifth resistor R5 are connected to ground, a second end of the second inductor L2 and a positive electrode of the first diode are connected to and connected to a first pin of the boost ICU2, a negative electrode of the first diode D1, a first end of the sixth resistor R6, a first end of the ninth capacitor C9 and a first end of the sixth capacitor C10 are connected to and a first end of the boost ICU 867, a first end of the boost ICU 8672 and a first end of the boost ICU 8672, the second pin of the boosting ICU2, the second end of the seventh resistor R7 and the second end of the tenth capacitor C10 are connected to ground.

Specifically, the boost module boosts the isolated power supply to a high voltage of 30V, and the circuit diagram refers to fig. 4, and the boost IC adopts an APW7137 chip.

The working principle of the control board card applied to the touch equipment is as follows:

power and communication signals of the upper computer are input into the touch chip through the isolation module, the isolated power is boosted to 30V high voltage by the boosting module, the 30V high voltage controls partial voltage to output a TX signal with certain frequency smaller than 30V voltage through the touch chip 80H84, the signal is transmitted to the touch sensor through a signal attenuator formed by a resistor, and the RX signal transmits the touched signal to the 80H84 signal processing chip through attenuation resistance processing, so that the touch function is realized. The isolation module that increases can keep apart the conducted interference of host computer, and the signal that the decay resistance can send out the touch chip further attenuates and reduce the radiation interference.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides a be applied to touch device's control integrated circuit board, its characterized in that, is including keeping apart module, power module, touch chip, boost circuit, signal attenuator, touch sensor and decay resistance, power module, touch chip and boost module are connected with the isolation module respectively, the boost module still is connected with touch chip, signal attenuator, touch sensor and decay resistance connect gradually, decay resistance still is connected with touch chip.

2. The control board card applied to the touch device according to claim 1, further comprising a crystal oscillator module, wherein the crystal oscillator module is connected to the touch chip.

3. The control board card applied to the touch device, according to claim 2, wherein the isolation module includes an input power isolation module and a USB signal isolation module.

4. The control board card applied to the touch device, according to claim 3, wherein the input power isolation module includes a first capacitor, a first inductor, a second capacitor, an isolation IC and a third capacitor, the first capacitor is connected to a first end of the first inductor, a second end of the first inductor is connected to a first end of the second capacitor and connected to a second interface of the isolation IC, a second end of the second capacitor is connected to the first interface of the isolation IC, a third interface of the isolation IC is connected to a first end of the third capacitor, and a fourth interface of the isolation IC is connected to a second end of the third capacitor.

5. The control board card applied to the touch device as claimed in claim 4, wherein the USB signal isolation module includes an ADUM4160 chip, a fourth capacitor, a fifth capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor, a sixth capacitor and a seventh capacitor, a first pin of the ADUM4160 chip is connected to a first end of the fourth capacitor, a third pin, a fourth pin and a fifth pin of the ADUM4160 chip are connected to a first end of the fifth capacitor, a second end of the fourth capacitor and a second end of the fifth capacitor are connected to a second pin of the ADUM4160 chip, a sixth pin of the ADUM4160 chip is connected to the first resistor, a seventh pin of the ADUM4160 chip is connected to the second resistor, a tenth pin of the ADUM4160 chip is connected to the third resistor, an eleventh pin of the ADUM4160 chip is connected to the fourth resistor, and a twelfth pin of the ADUM4160 chip is connected to the third resistor, And the thirteenth pin and the fourteenth pin are connected and are connected with the first end of a sixth capacitor, the sixteenth pin of the ADUM4160 chip is connected with the first end of a seventh capacitor, and the second end of the sixth capacitor and the second end of the seventh capacitor are connected and are connected with the fifteenth pin of the ADUM4160 chip.

6. The control board card applied to the touch device, according to claim 5, wherein the boost module comprises an eighth capacitor, a second inductor, a boost IC, a fifth resistor, a first diode, a sixth resistor, a seventh resistor, a ninth capacitor and a tenth capacitor, a first end of the eighth capacitor and a first end of the second inductor are connected and connected with a fifth pin of the boost IC, a fourth pin of the boost IC is connected with a first end of the fifth resistor, a second end of the eighth capacitor and a second end of the fifth resistor are connected and connected with ground, a second end of the second inductor and a positive electrode of the first diode are connected and connected with a first pin of the boost IC, a negative electrode of the first diode, a first end of the sixth resistor, a first end of the ninth capacitor and a first end of the tenth capacitor are connected, a second end of the sixth resistor, a second end of the ninth capacitor and a first end of the seventh resistor are connected and connected with a third pin of the boost IC, and the second pin of the boost IC, the second end of the seventh resistor and the second end of the tenth capacitor are connected with the ground.