Single-layer PCB layout structure of remote controller

Abstract

The utility model relates to a single-layer PCB layout structure of a remote controller. The single-layer PCB layout structure of the remote controller comprises an MCU unit, an infrared unit, an LED unit, a key unit, a reset unit, a voice unit and a power supply unit which are arranged on the same layer, the infrared unit, the LED unit, the key unit, the reset unit, the voice unit and the power supply unit are respectively connected with the MCU unit, and the MCU unit comprises an ATB1113 main control chip; the ATB1113 main control chip comprises 33 pins, the first pin is respectively connected with one end of the first inductor and one end of the first capacitor, the second pin is respectively connected with the other end of the first inductor, one end of the second inductor and one end of the second capacitor, the third pin is connected with one end of the third capacitor, and the fourth pin and the fifth pin are connected with the crystal oscillator; the distance between the first inductor and the ATB1113 main control chip is smaller than 35 mil. According to the single-layer PCB layout structure of the remote controller, component layout and signal wiring are reasonable, and signal stability and anti-interference performance of the remote controller are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of printed circuit boards, in particular to a single-layer PCB board layout structure of a remote controller. Background Art

[0002] A remote controller is a wireless transmitting device that encodes key information through modern digital coding technology, emits light waves through an infrared diode, and the infrared receiver of the receiver converts the received infrared signal into an electrical signal, which is then decoded by the processor to demodulate the corresponding instructions to achieve the required operation requirements for controlling devices such as set-top boxes.

[0003] The PCB board of the remote controller mainly includes a substrate, components, copper foil wires, etc. The layout of the components and the routing method of the copper foil wires in the remote controller PCB board have a significant impact on the signal stability and anti-interference ability of the remote controller. Due to many defects in the layout of the components and the routing method of the signal in the existing remote controller PCB board, the signal stability and anti-interference ability of the remote controller are poor. Summary of the Utility Model

[0004] Based on this, in view of the problem that the PCB board of the existing remote controller has many defects in the layout of the components and the routing method of the signal, resulting in poor signal stability and anti-interference ability of the remote controller, it is necessary to provide a single-layer PCB board layout structure of a remote controller.

[0005] A single-layer PCB board layout structure of a remote controller includes an MCU unit, an infrared unit, an LED unit, a key unit, a reset unit, a voice unit, and a power supply unit arranged on the same layer. The infrared unit, the LED unit, the key unit, the reset unit, the voice unit, and the power supply unit are respectively connected to the MCU unit. The MCU unit includes an ATB1113 main control chip, and the ATB1113 main control chip includes 33 pins.

[0006] One end of the first inductor and one end of the first capacitor are respectively connected to the first pin of the ATB1113 main control chip. The other end of the first inductor, one end of the second inductor and one end of the second capacitor are respectively connected to the second pin. One end of the third capacitor is connected to the third pin. The fourth and fifth pins are connected to the crystal oscillator. The sixth pin is connected to the LED unit. The seventh, eighth, ninth, twenty-fourth, twenty-fifth, twenty-sixth, twenty-seventh and twenty-eighth pins are connected to the key unit. The tenth, twelfth, twenty-ninth and thirtieth pins are for testing. The eleventh pin is connected to the infrared unit. The thirteenth pin is connected to the LED unit and is used for testing. One end of the fourth capacitor is connected to the fourteenth pin. One end of the fifth capacitor is connected to the fifteenth pin. The sixteenth, twenty-first, thirty-first and thirty-second pins are floating. One end of the sixth capacitor and one end of the seventh capacitor are respectively connected to the seventeenth pin. The eighteenth pin is connected to the reset unit and is used for testing. One end of the eighth capacitor is connected to the nineteenth pin. One end of the ninth capacitor is connected to the twentieth pin. The twenty-second and twenty-third pins are connected to the voice unit. One end of the tenth capacitor is also connected to the twenty-third pin. The thirty-third pin is grounded. The other ends of the first capacitor, the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor, the sixth capacitor, the seventh capacitor, the eighth capacitor, the ninth capacitor and the tenth capacitor are all grounded;

[0007] One end of the second capacitor is also connected to one end of the second inductor. The other end of the second inductor is respectively connected to one end of the eleventh capacitor and one end of the twelfth capacitor. The other end of the eleventh capacitor is grounded. The other end of the twelfth capacitor is respectively connected to one end of the thirteenth capacitor and one end of the third inductor. The other end of the thirteenth capacitor is grounded. The other end of the third inductor is respectively connected to one end of the fourteenth capacitor and one end of the antenna. The other end of the antenna and the other end of the fourteenth capacitor are respectively grounded; The distance between the first inductor and the ATB1113 main control chip is less than 35 mil.

[0008] The single-layer PCB board layout structure of the above remote control includes an MCU unit, an infrared unit, an LED unit, a button unit, a reset unit, a voice unit, and a power supply unit arranged on the same layer. The infrared unit, the LED unit, the button unit, the reset unit, the voice unit, and the power supply unit are respectively connected to the MCU unit. The infrared unit is used to emit infrared control signals, the LED unit is used for LED display, the button unit is used to collect the button control signals of the user, the reset unit is used to reset the remote control, the voice unit is used to collect the voice control signals of the user, and the power supply unit is used for power supply. The MCU unit includes an ATB1113 main control chip U1, and the ATB1113 main control chip U1 includes 33 pins. The first inductor L1, the first capacitor C1, the second capacitor C2, the second inductor L2, the eleventh capacitor C11, the twelfth capacitor C12, the thirteenth capacitor C13, the third inductor L3, the fourteenth capacitor C14, and the antenna ANT1 form a radio frequency path for emitting radio frequency control signals. The third capacitor C3 is the power supply capacitor for the radio frequency path, and the crystal oscillator Y1 is used to generate a stable clock signal. The fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, the seventh capacitor C7, the eighth capacitor C8, the ninth capacitor C9, and the tenth capacitor C10 are used for filtering and voltage stabilization. By arranging the above-mentioned MCU unit, infrared unit, LED unit, button unit, reset unit, voice unit, and power supply unit on a single-layer board, the radio frequency performance of the single-layer PCB board layout structure of the remote control is greatly improved, and at the same time, the signal stability and anti-interference ability of the remote control are enhanced.

[0009] In one embodiment, the first inductor, the first capacitor, the second capacitor, the second inductor, the eleventh capacitor, the twelfth capacitor, the thirteenth capacitor, the third inductor, the fourteenth capacitor, and the antenna form a radio frequency path, and the length of the radio frequency path is less than 16.5 mm.

[0010] In one embodiment, the grounding line of the ATB1113 main control chip is connected to the grounding line of the radio frequency path.

[0011] In one embodiment, the widths of the grounding lines of the ATB1113 main control chip and the radio frequency path are both greater than 23 mil.

[0012] In one embodiment, the distance between the third capacitor and the ATB1113 main control chip is less than 150 mil.

[0013] In one embodiment, the crystal oscillator includes 4 pins;

[0014] The first pin of the crystal oscillator is connected to the fourth pin of the ATB1113 main control chip, the third pin is connected to the fifth pin of the ATB1113 main control chip, and the second pin and the fourth pin are grounded;

[0015] The second pin and the fourth pin of the crystal oscillator are grounded at a single point through a common wiring point.

[0016] In one embodiment, the third pin and the fifteenth pin of the ATB1113 main control chip are connected through a bottom wiring, and the bottom wiring is arranged at the bottom of the ATB1113 main control chip.

[0017] In one embodiment, the button unit includes a first button unit and a second button unit, and the first button unit and the second button unit are separated by an audio wiring;

[0018] The audio wiring includes a first audio wiring and a second audio wiring. The first audio wiring is the connection wiring between the twenty-second pin of the ATB1113 main control chip and the voice unit, and the second audio wiring is the connection wiring between the twenty-third pin of the ATB1113 main control chip and the voice unit.

[0019] In one embodiment, the infrared unit includes a fifteenth capacitor, a first resistor, a second resistor, a third resistor, an infrared diode, and a triode;

[0020] One end of the first resistor is connected to the eleventh pin of the ATB1113 main control chip, and the other end is respectively connected to one end of the second resistor and the base of the triode;

[0021] The other end of the second resistor and the emitter of the triode are grounded;

[0022] The collector of the triode is connected to one end of the third resistor, the other end of the third resistor is connected to the negative extreme of the infrared diode, the positive extreme of the infrared diode is connected to one end of the fifteenth capacitor, and the other end of the fifteenth capacitor is grounded;

[0023] The width of the connection wiring between one end of the first resistor and the eleventh pin of the ATB1113 main control chip is greater than 15 mil.

[0024] In one embodiment, the connection wiring between one end of the first resistor and the eleventh pin of the ATB1113 main control chip is surrounded by ground on both sides of the trace. Description of the Drawings

[0025] Figure 1 It is the circuit diagram of the MCU unit in the single-layer PCB board layout structure of the remote controller of the present utility model;

[0026] Figure 2 It is the circuit diagram of the infrared unit in the single-layer PCB board layout structure of the remote controller of the present utility model;

[0027] Figure 3 This is an overall schematic diagram of the single - layer PCB board layout structure of the remote controller of the present utility model;

[0028] Figure 4 is Figure 3 an enlarged view of part A in Specific embodiments

[0029] In order to make the above - mentioned objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0032] The present utility model discloses a single - layer PCB board layout structure of a remote controller.

[0033] Such as Figures 1 to 4As shown, the single-layer PCB board layout structure of the remote control includes an MCU unit, an infrared unit, an LED unit, a button unit, a reset unit, a voice unit, and a power supply unit arranged on the same layer. The infrared unit, LED unit, button unit, reset unit, voice unit, and power supply unit are respectively connected to the MCU unit. The MCU unit includes an ATB1113 main control chip U1, and the ATB1113 main control chip U1 has 33 pins. The ATB1113 main control chip U1 is a single-mode low-power Bluetooth 5.3 system-on-chip, which can be configured as a broadcaster, an observer, a central device, or a peripheral device, and supports the combined application of the above various roles, supports 1 master and multiple slaves, multiple transmissions and multiple receptions, and can be widely used in Internet of Things (IoT) fields such as Bluetooth voice remote controls, voice mice, voice keyboards, translation sticks, voice recording toys, and Bluetooth data transmission products (such as fingerprint locks, smart medicine boxes, cold chain logistics, in-vehicle atomization disinfection, foam hand washers, power tools).

[0034] The first pin of the ATB1113 main control chip U1 is respectively connected to one end of the first inductor L1 and one end of the first capacitor C1. The second pin is respectively connected to the other end of the first inductor L1, one end of the second inductor L2 and one end of the second capacitor C2. The third pin is connected to one end of the third capacitor C3. The fourth and fifth pins are connected to the crystal oscillator Y1. The sixth pin is connected to the LED unit. The seventh, eighth, ninth, twenty-fourth, twenty-fifth, twenty-sixth, twenty-seventh and twenty-eighth pins are connected to the key unit. The tenth, twelfth, twenty-ninth and thirtieth pins are for testing. The eleventh pin is connected to the infrared unit. The thirteenth pin is connected to the LED unit and is used for testing. The fourteenth pin is connected to one end of the fourth capacitor C4. The fifteenth pin is connected to one end of the fifth capacitor C5. The sixteenth, twenty-first, thirty-first and thirty-second pins are floating. The seventeenth pin is respectively connected to one end of the sixth capacitor C6 and one end of the seventh capacitor C7. The eighteenth pin is connected to the reset unit and is used for testing. The nineteenth pin is connected to one end of the eighth capacitor C8. The twentieth pin is connected to one end of the ninth capacitor C9. The twenty-second and twenty-third pins are connected to the voice unit. The twenty-third pin is also connected to one end of the tenth capacitor C10. The thirty-third pin is grounded. The other ends of the first capacitor C1, the second capacitor C2, the third capacitor C3, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, the seventh capacitor C7, the eighth capacitor C8, the ninth capacitor C9 and the tenth capacitor C10 are all grounded. One end of the second capacitor C2 is also connected to one end of the second inductor L2. The other end of the second inductor L2 is respectively connected to one end of the eleventh capacitor C11 and one end of the twelfth capacitor C12. The other end of the eleventh capacitor C11 is grounded. The other end of the twelfth capacitor C12 is respectively connected to one end of the thirteenth capacitor C13 and one end of the third inductor L3. The other end of the thirteenth capacitor C13 is grounded. The other end of the third inductor L3 is respectively connected to one end of the fourteenth capacitor C14 and one end of the antenna ANT1. The other end of the antenna ANT1 and the other end of the fourteenth capacitor C14 are respectively grounded; The distance between the first inductor L1 and the ATB1113 main control chip U1 should be as small as possible to reduce radiation and improve RF efficiency. Preferably, the distance between the first inductor L1 and the ATB1113 main control chip U1 is less than 35 mil.

[0035] The single-layer PCB board layout structure of the above remote control includes an MCU unit, an infrared unit, an LED unit, a button unit, a reset unit, a voice unit, and a power supply unit arranged on the same layer. The infrared unit, LED unit, button unit, reset unit, voice unit, and power supply unit are respectively connected to the MCU unit. The infrared unit is used to emit infrared control signals, the LED unit is used for LED display, the button unit is used to collect the user's button control signals, the reset unit is used to reset the remote control, the voice unit is used to collect the user's voice control signals, and the power supply unit is used for power supply. The MCU unit includes an ATB1113 main control chip U1, and the ATB1113 main control chip U1 includes 33 pins. The first inductor L1, the first capacitor C1, the second capacitor C2, the second inductor L2, the eleventh capacitor C11, the twelfth capacitor C12, the thirteenth capacitor C13, the third inductor L3, the fourteenth capacitor C14, and the antenna ANT1 form a radio frequency path for emitting radio frequency control signals. The third capacitor C3 is the power supply capacitor for the radio frequency path, and the crystal oscillator Y1 is used to generate a stable clock signal. The fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, the seventh capacitor C7, the eighth capacitor C8, the ninth capacitor C9, and the tenth capacitor C10 are used for filtering and voltage stabilization. By arranging the above-mentioned MCU unit, infrared unit, LED unit, button unit, reset unit, voice unit, and power supply unit on a single-layer board, the radio frequency performance of the single-layer PCB board layout structure of the remote control is greatly improved, and at the same time, the signal stability and anti-interference ability of the remote control are enhanced.

[0036] Among them, the radio frequency path requires a single-ended impedance of 50 ohms. The radio frequency path should be as short as possible to reduce signal loss. Preferably, the length of the radio frequency path is less than 16.5 mm.

[0037] Among them, the grounding line of the ATB1113 main control chip U1 is connected to the grounding line of the radio frequency path. By connecting the grounding line of the ATB1113 main control chip U1 to the grounding line of the radio frequency path, the circuit is simplified and the signal return path is shortened. If the grounding line is very thin, the grounding potential changes with the current, resulting in unstable signal levels of the remote control and poor anti-noise performance. Therefore, the grounding line should be thickened so that it can pass three times the allowable current on the printed board. Preferably, the widths of the grounding lines of both the ATB1113 main control chip U1 and the radio frequency path are greater than 23 mils.

[0038] Among them, the third capacitor C3 should be placed close to the ATB1113 main control chip U1 to shorten the signal return path. Preferably, the distance between the third capacitor C3 and the ATB1113 main control chip U1 is less than 150 mils.

[0039] Among them, the crystal oscillator Y1 includes 4 pins; the first pin of the crystal oscillator Y1 is connected to the fourth pin of the ATB1113 main control chip U1, the third pin of the crystal oscillator Y1 is connected to the fifth pin of the ATB1113 main control chip U1, and the second and fourth pins of the crystal oscillator Y1 are grounded; the second and fourth pins of the crystal oscillator Y1 are grounded through a common circuit point. The second and fourth pins of the crystal oscillator Y1 are grounded through a common circuit point, which can avoid the influence of interference transmitted from the ground on the crystal oscillator Y1 and also reduce the coupling from the crystal oscillator Y1 to the ATB1113 main control chip U1 to a certain extent.

[0040] Among them, the third pin and the fifteenth pin of the ATB1113 main control chip U1 are connected through a bottom circuit, and the bottom circuit is arranged at the bottom of the ATB1113 main control chip U1. By arranging the bottom circuit at the bottom of the ATB1113 main control chip U1, the bottom area of the ATB1113 main control chip U1 can be effectively utilized, and the wiring difficulty of the radio frequency path can be reduced.

[0041] Among them, the key unit includes a first key unit and a second key unit, and the first key unit and the second key unit are separated by an audio circuit; the audio circuit includes a first audio circuit and a second audio circuit, the first audio circuit is the connection circuit between the twenty-second pin of the ATB1113 main control chip U1 and the voice unit, and the second audio circuit is the connection circuit between the twenty-third pin of the ATB1113 main control chip U1 and the voice unit. Since there are many circuits in the key unit, separating the first key unit and the second key unit by the audio circuit makes the wiring of the first key unit and the second key unit not have to cross each other, reducing the wiring difficulty of the key unit.

[0042] Among them, the infrared unit includes the fifteenth capacitor C15, the first resistor R1, the second resistor R2, the third resistor R3, the infrared diode IR1, and the triode Q1; one end of the first resistor R1 is connected to the eleventh pin of the ATB1113 main control chip U1, and the other end is respectively connected to one end of the second resistor R2 and the base of the triode Q1; the other end of the second resistor R2 and the emitter of the triode Q1 are grounded; the collector of the triode Q1 is connected to one end of the third resistor R3, the other end of the third resistor R3 is connected to the negative electrode of the infrared diode IR1, the positive electrode of the infrared diode IR1 is connected to one end of the fifteenth capacitor C15, and the other end of the fifteenth capacitor C15 is grounded. The first resistor R1 and the third resistor R3 are used for voltage division, the second resistor R2 is used for current limiting, the fifteenth capacitor C15 is used for filtering, the infrared diode IR1 is used for emitting infrared control signals, and the triode Q1 is used for signal amplification. The connection line between one end of the first resistor R1 and the eleventh pin of the ATB1113 main control chip U1 bears a large current when emitting infrared control signals, so the current-carrying capacity should be satisfied as much as possible. Preferably, the width of the connection line between one end of the first resistor R1 and the eleventh pin of the ATB1113 main control chip U1 is greater than 15 mil.

[0043] Among them, since the current is small when the infrared control signal is not emitted, the connection line between one end of the first resistor R1 and the eleventh pin of the ATB1113 main control chip U1 is easily affected by the coupling interference of the adjacent traces. Therefore, it is necessary to ground both sides of the connection line between one end of the first resistor R1 and the eleventh pin of the ATB1113 main control chip. At the same time, the traces of the LED unit and the key unit should avoid being parallel to the traces of the infrared unit. Further, the traces of the power supply unit should be as consistent as possible with the traces of the grounding line and the data transfer line to enhance the anti-noise ability of the remote control.

[0044] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0045] The above-described embodiments only represent several implementation manners of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A single-layer PCB board layout structure of a remote control, characterized in that, It includes an MCU unit, an infrared unit, an LED unit, a button unit, a reset unit, a voice unit, and a power supply unit arranged on the same layer. The infrared unit, the LED unit, the button unit, the reset unit, the voice unit, and the power supply unit are respectively connected to the MCU unit. The MCU unit includes an ATB1113 main control chip, and the ATB1113 main control chip has 33 pins; The first pin of the ATB1113 main control chip is respectively connected to one end of a first inductor and one end of a first capacitor. The second pin is respectively connected to the other end of the first inductor, one end of a second inductor, and one end of a second capacitor. The third pin is connected to one end of a third capacitor. The fourth and fifth pins are connected to a crystal oscillator. The sixth pin is connected to the LED unit. The seventh, eighth, ninth, twenty-fourth, twenty-fifth, twenty-sixth, twenty-seventh, and twenty-eighth pins are connected to the button unit. The tenth, twelfth, twenty-ninth, and thirtieth pins are for testing. The eleventh pin is connected to the infrared unit. The thirteenth pin is connected to the LED unit and is for testing. The fourteenth pin is connected to one end of a fourth capacitor. The fifteenth pin is connected to one end of a fifth capacitor. The sixteenth, twenty-first, thirty-first, and thirty-second pins are floating. The seventeenth pin is respectively connected to one end of a sixth capacitor and one end of a seventh capacitor. The eighteenth pin is connected to the reset unit and is for testing. The nineteenth pin is connected to one end of an eighth capacitor. The twentieth pin is connected to one end of a ninth capacitor. The twenty-second and twenty-third pins are connected to the voice unit. The twenty-third pin is also connected to one end of a tenth capacitor. The thirty-third pin is grounded. The other ends of the first capacitor, the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor, the sixth capacitor, the seventh capacitor, the eighth capacitor, the ninth capacitor, and the tenth capacitor are all grounded; One end of the second capacitor is also connected to one end of the second inductor. The other end of the second inductor is respectively connected to one end of an eleventh capacitor and one end of a twelfth capacitor. The other end of the eleventh capacitor is grounded. The other end of the twelfth capacitor is respectively connected to one end of a thirteenth capacitor and one end of a third inductor. The other end of the thirteenth capacitor is grounded. The other end of the third inductor is respectively connected to one end of a fourteenth capacitor and one end of an antenna. The other end of the antenna and the other end of the fourteenth capacitor are respectively grounded; The distance between the first inductor and the ATB1113 main control chip is less than 35 mil.

2. The single-layer PCB board layout structure of the remote controller according to claim 1, wherein The first inductor, the first capacitor, the second capacitor, the second inductor, the eleventh capacitor, the twelfth capacitor, the thirteenth capacitor, the third inductor, the fourteenth capacitor, and the antenna form a radio frequency path, and the length of the radio frequency path is less than 16.5 mm.

3. The single-layer PCB board layout structure of the remote controller according to claim 2, wherein The grounding line of the ATB1113 main control chip is connected to the grounding line of the radio frequency path.

4. The single-layer PCB board layout structure of the remote control according to claim 3, characterized in that The width of the grounding line of the ATB1113 main control chip and the width of the grounding line of the radio frequency path are both greater than 23 mil.

5. The single-layer PCB board layout structure of the remote control according to claim 1, characterized in that, The distance between the third capacitor and the ATB1113 main control chip is less than 150 mil.

6. The single-layer PCB board layout structure of the remote controller according to claim 1, characterized in that The crystal oscillator includes 4 pins; The first pin of the crystal oscillator is connected to the fourth pin of the ATB1113 main control chip, the third pin is connected to the fifth pin of the ATB1113 main control chip, and the second and fourth pins are grounded; The second and fourth pins of the crystal oscillator are grounded at a single point through a common line point.

7. The single-layer PCB board layout structure of the remote controller according to claim 1, wherein, The third and fifteenth pins of the ATB1113 main control chip are connected through a bottom line, and the bottom line is arranged at the bottom of the ATB1113 main control chip.

8. The single-layer PCB board layout structure of the remote control according to claim 1, wherein, The key unit includes a first key unit and a second key unit, and the first key unit and the second key unit are separated by an audio line; The audio line includes a first audio line and a second audio line. The first audio line is the connection line between the twenty-second pin of the ATB1113 main control chip and the voice unit, and the second audio line is the connection line between the twenty-third pin of the ATB1113 main control chip and the voice unit.

9. The single-layer PCB board layout structure of the remote control according to claim 1, wherein The infrared unit includes a fifteenth capacitor, a first resistor, a second resistor, a third resistor, an infrared diode and a triode; One end of the first resistor is connected to the eleventh pin of the ATB1113 main control chip, and the other end is respectively connected to one end of the second resistor and the base of the triode; The other end of the second resistor and the emitter of the triode are grounded; The collector of the triode is connected to one end of the third resistor, the other end of the third resistor is connected to the negative extreme of the infrared diode, the positive extreme of the infrared diode is connected to one end of the fifteenth capacitor, and the other end of the fifteenth capacitor is grounded; The width of the connection line between one end of the first resistor and the eleventh pin of the ATB1113 main control chip is greater than 15 mil.

10. The single-layer PCB board layout structure of the remote controller according to claim 9, characterized in that, The connection line between one end of the first resistor and the eleventh pin of the ATB1113 main control chip is surrounded by ground on both sides of the trace.

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