Sleep earphone circuit structure

Abstract

The utility model discloses a sleep earphone circuit structure, which comprises a main control module, a touch control module, an audio output module, a microphone input module and a charging input module, the main control module adopts a main control chip U1, the main control chip U1 adopts a chip with a Bluetooth module and a storage module, and the charging input module adopts an audio output module. The audio output module, the microphone input module, the touch control module and the charging input module are respectively connected with the main control chip U1, and the main control chip U1 is connected with an antenna module. According to the utility model, the chip with the Bluetooth and the storage module is used as the main control chip, and the Bluetooth module and the storage chip do not need to be additionally arranged, so that the circuit structure is simplified, the element cost is saved, and the circuit is easier to design. In addition, the whole circuit only needs to be provided with one main control unit, the circuit structure is further simplified, the number of electronic elements is reduced, and therefore cost reduction and product size reduction are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to earphone product technical field especially relates to a kind of bluetooth sleep earphone. BACKGROUND

[0002] Sleep earphone is a new type of sleep auxiliary tool, and sleep earphone can be worn to sleep to isolate external noise and achieve sleep aid. The original sleep earphone generally only has the function of disturbing-free and isolating external noise, but some sleep disorderers cannot effectively improve sleep quality by isolating external noise only. Therefore, someone else has invented sleep earphone with sleep audio, such as sleep-aiding soothing music, white noise, etc. For example, a sleep earphone disclosed in Chinese utility model patent CN202023045532.7 can help users improve sleep quality by storing sleep ring tones in the earphone built-in storage chip. However, the patent increases the cost and improves the design difficulty of the earphone circuit by setting storage chips in the left and right earphones. At the same time, the circuit structure of the patent is quite complex, which needs to set three main control units, and the control chip used is also very complex, resulting in the increase of the cost of the whole earphone. CONTENT OF THE UTILITY MODEL

[0003] The utility model provides a sleep earphone circuit structure with simpler structure, easier design, lower cost and smaller earphone size to overcome the defects of the prior art.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme: a sleep earphone circuit structure, including main control module, touch control module, audio output module, microphone input module and charging input module, the touch control module, audio output module, microphone input module and charging input module are connected with main control module respectively; the main control module adopts main control chip U1, the main control chip U1 is connected with antenna module, characterized by: the main control chip U1 adopts the chip with built-in Bluetooth module and storage module, wherein the audio output module is connected with the DACRN pin and DACRP pin of main control chip U1, the microphone input module is connected with the AIN_A1 / PA2 / PA3 pin, AIN_A0 / PA1 pin and ADC11 / PC2 / USBDM pin of main control chip U1, and the antenna module is connected with the BTRF pin of main control chip U1.

[0005] The main control chip U1 adopts model 7103A3, and the AGND of main control chip U1 is short-circuited with GND at the bottom of the chip.

[0006] The battery protection and loudspeaker and charging interface assembly module is used for protecting the lithium battery, and is composed of an FPC circuit board, a lithium battery protection chip U2 and an FPC connecting male seat J2 are arranged on the FPC circuit board, the model of the lithium battery protection chip U2 is CM112E, the loudspeaker and the audio output module are respectively welded with the FPC connecting male seat J2, the lithium battery protection chip U2 is connected with a PB2 / ADC7 / LP_TH2 pin of the main control chip U1, and the FPC connecting male seat J2 is connected with a VBAT pin of the main control chip U1.

[0007] The main control module further comprises a burning port for software upgrading, and the burning port is connected with an ADC10 / PC0 / USBDP pin and an ADC11 / PC2 / USBDM pin of the main control chip U1.

[0008] The touch control module is connected with a PB1 / ADC6 / LP_TH1 pin of the main control chip U1, and a capacitor C4 is used as a touch element.

[0009] The charging input module is connected with a VPWR pin of the main control chip U1 to input a DC 5V direct current power supply.

[0010] The state indication module is connected with an IOVDD pin of the main control chip U1.

[0011] The front cavity assembly interface module and the battery protection and loudspeaker and charging interface assembly module constitute a power supply and charging and lithium protection circuit port for connecting the main control module.

[0012] The main control module further comprises a crystal oscillator module composed of a crystal oscillator Y1 and a left-right ear distinguishing resistor R20, wherein the crystal oscillator Y1 is connected with an XOSCO pin and an XOSCI pin of the main control chip U1, and the left-right ear distinguishing resistor R20 is connected with an ADC10 / PC0 / USBDP pin of the main control chip U1.

[0013] The utility model discloses a chip with bluetooth and storage module as the main control chip, which can not need to set bluetooth module and storage chip additionally, so that not only the circuit structure is simplified, the component cost is saved, but also the circuit is easier to design. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the main control module circuit principle diagram of the utility model;

[0015] Figure 2 It is the touch control module circuit principle diagram of the utility model;

[0016] Figure 3 The utility model discloses an audio output module circuit principle drawing;

[0017] Figure 4 The utility model discloses a microphone input module circuit principle drawing;

[0018] Figure 5 The utility model discloses a charging input module circuit principle drawing;

[0019] Figure 6 The utility model discloses a state indicating module circuit principle drawing;

[0020] Figure 7 The utility model discloses a front cavity assembly interface module principle drawing;

[0021] Figure 8 The utility model discloses a battery protection and loudspeaker and charging interface assembly module principle drawing. DETAILED DESCRIPTION

[0022] In the embodiment, referring to Figures 1-8 The sleep earphone circuit structure includes a main control module, a touch control module, an audio output module, a microphone input module and a charging input module. The touch control module, the audio output module, the microphone input module and the charging input module are connected with the main control module. The main control module adopts a main control chip U1. The main control chip U1 is connected with an antenna module. The main control chip U1 adopts a chip with a built-in Bluetooth module (Bluetooth chip) and a storage module (Flash). The audio output module is connected with the DACRN pin and the DACRP pin of the main control chip U1. The microphone input module (with ANC noise reduction function) is connected with the AIN_A1 / PA2 / PA3 pin, the AIN_A0 / PA1 pin and the ADC11 / PC2 / USBDM pin of the main control chip U1. The antenna module is connected with the BTRF pin of the main control chip U1.

[0023] The main control chip U1 adopts a model 7103A3. The AGND of the main control chip U1 is short-circuited with the GND at the bottom of the chip. Of course, the main control chip U1 can also adopt the following model chips: for example, Jiali: JL7093 / JL7003 / JL7103 / JL6973 / JL7006 / JL6896 / JL7096 / JL6976 series chips; Zhongke Lanshun:

[0024] BT5656 / AB5712 / AB5716 / BT8922 / BT8926 / BT8925 / BT8931 / BT8932 / BT8951 / BT8952 / AB5676 series chips;

[0025] Torch core: ATS3015 / ATS3019 / ATS3009 / ATS2831 / ATS3025 / ATS3039 / ATS3231 / ATS3031

[0026] ATS2831 series chip;

[0027] Ruiyi: BTL8963 / BTL8953 / BTL8773 series chip;

[0028] BES: BES2500 / BES2300 / BES230 / BES2600 / BES2700 / BES2800 series chip

[0029] WQ7003 / WQ7034 / WQ7035 / WQ7036 / WQ7039 series chip of Wuqi;

[0030] Qualcomm: QCC3072 / QCC3091 / QCC3034 / QCC5121 / QCC3044 / QCC3056 / QCC5151 / QCC5125 / QCC5126 / QCC5127 / QCC5141 / QCC5144 series chip;

[0031] Luo Da: AB1595 / AB1592 / AB1585 / AB15571 / AB1577 / AB1565 / AB1568 series chip. etc.

[0032] It also includes a battery protection and speaker and charging interface component module for protecting lithium batteries, the battery protection and speaker and charging interface component module adopts FPC circuit board, the advantage of using FPC circuit board is that it can reasonably arrange the required components in the extremely limited space of the earphone, and ensure the balance of function and product size; The FPC circuit board is provided with a lithium battery protection chip U2 and an FPC connecting male seat J2, the model of the lithium battery protection chip U2 is CM112E; The charging interface and the speaker of the audio output module are respectively welded with the FPC connecting male seat J2, the lithium battery protection chip U2 is connected with the PB2 / ADC7 / LP_TH2 pins of the main control chip U1, and the FPC connecting male seat J2 is connected with the VBAT pin of the main control chip U1.

[0033] The main control module further includes a burning port for software upgrading, the burning port is connected with the ADC10 / PC0 / USBDP pins and the ADC11 / PC2 / USBDM pins of the main control chip U1.

[0034] The touch control module is connected with the PB1 / ADC6 / LP_TH1 pins of the main control chip U1, and a capacitor C4 is used as a touch element.

[0035] The charging input module is connected with the VPWR pin of the main control chip U1 to input a DC 5V direct current power supply.

[0036] The state indicating module is also included, which is an LED lamp connected with the IOVDD pin of the main control chip U1. After the circuit is powered on for the first time, the main control chip U1 enters an initial state and a device pairing state, and the LED lamp enters an alternating flashing display and a pairing display. After the device pairing is successful, the LED lamp is extinguished.

[0037] The front cavity assembly interface module is also included, which, together with the battery protection and the loudspeaker and charging interface assembly module, forms a power supply and charging circuit and a lithium protection circuit port for connecting the main control module.

[0038] The main control module also includes a crystal oscillator module composed of a crystal oscillator Y1 and a left-right ear distinguishing resistor R20. The crystal oscillator Y1 is connected with the XOSCO pin and the XOSCI pin of the main control chip U1, and the left-right ear distinguishing resistor R20 is connected with the ADC10 / PC0 / USBDP pin of the main control chip U1.

[0039] When the earphone is in a Bluetooth mode, the touch control module receives instructions such as playing / pausing / previous song / next song / answering / hanging up a phone / Siri / sleeping / Bluetooth mode switching / ANC mode switching, etc.

[0040] When the earphone is in a sleep mode, the touch control module only receives an instruction of switching between the Bluetooth mode and the sleep mode. At the same time, the main control module automatically shields the prompt sound of a mobile phone call and a mobile phone APP media, and the whole system only retains a Bluetooth connection, and the earphone only plays white noise and other audio downloaded by the earphone. The white noise and other audio are stored in the Flash of the main control chip U1, and are output to the loudspeaker of the audio output module through the DACRN pin and the DACRP pin during playing.

[0041] The utility model has been described in detail above, and the above description is only a preferred embodiment of the utility model, which cannot limit the utility model implementation range, that is, all equivalent changes and modifications made according to the application range should still belong to the utility model coverage.

Claims

1. A sleep earphone circuit structure, comprising a master control module, a touch control module, an audio output module, a microphone input module and a charging input module, the touch control module, the audio output module, the microphone input module and the charging input module being connected with the master control module respectively; the master control module adopts a master control chip U1, the master control chip U1 being connected with an antenna module, characterized in that: The main control chip U1 adopts a chip with a built-in Bluetooth module and a storage module, wherein the audio output module is connected with the DACRN pin and the DACRP pin of the main control chip U1, the microphone input module is connected with the AIN_A1 / PA2 / PA3 pin, the AIN_A0 / PA1 pin and the ADC11 / PC2 / USBDM pin of the main control chip U1, and the antenna module is connected with the BTRF pin of the main control chip U1. ​ 2. The sleep earphone circuit structure of claim 1, wherein: The main control chip U1 is of the JL7103A3 type, or is of the JL7093, JL7003, JL7103, JL6973, JL7006, JL6896, JL7096, JL6976, BT5656, AB5712, AB5716, BT8922, BT8926, BT8925, BT8931, BT8932, BT8951, BT8952, AB5676, ATS3015, ATS3019, ATS3009, ATS2831, ATS3025, ATS3039, ATS3231, ATS3031, ATS2831, BTL8963, BTL8953, BTL8773, BES2500, BES2300, BES230, BES2600, BES2700, BES2800, WQ7003, WQ7034, WQ7035, WQ7036, WQ7039, QCC3072, QCC3091, QCC3034, QCC5121, QCC3044, QCC3056, QCC5151, QCC5125, QCC5126 / QCC5127, QCC5141, QCC5144, AB1595, AB1592, AB1585, AB15571, AB1577, AB1565, AB1568 type, and the AGND of the main control chip U1 is short-circuited with the GND at the bottom of the chip.

3. The sleep earphone circuit structure of claim 2, wherein: The battery protection and loudspeaker and charging interface assembly module adopts an FPC circuit board, and the FPC circuit board is provided with a lithium battery protection chip U2 and an FPC connecting male seat J2, the lithium battery protection chip U2 is of the CM112E type, and the loudspeaker of the charging interface and the audio output module is welded to the FPC connecting male seat J2, the lithium battery protection chip U2 is connected with the PB2 / ADC7 / LP_TH2 pin of the main control chip U1, and the FPC connecting male seat J2 is connected with the VBAT pin of the main control chip U1.

4. The sleep earphone circuit structure of claim 2, wherein: The main control module further comprises a burning port for software upgrading, and the burning port is connected with the ADC10 / PC0 / USBDP pin and the ADC11 / PC2 / USBDM pin of the main control chip U1.

5. The sleep earphone circuit structure of claim 2, wherein: The touch control module is connected with the PB1 / ADC6 / LP_TH1 pin of the main control chip U1.

6. The sleep earphone circuit structure of claim 2, wherein: The charging input module is connected with the VPWR pin of the main control chip U1 to input a DC 5V direct-current power supply.

7. The sleep earphone circuit structure of claim 2, wherein: There is also a state indicating module, the state indicating module adopts LED lamp, it is connected with IOVDD pin of main control chip U1.

8. The sleep earphone circuit structure of claim 2, wherein: There is also a front cavity component interface module, the front cavity component interface module and the battery protection and the loudspeaker and the charging interface component module constitute the power supply and charging and the lithium protection line circuit port for connecting the main control module.

9. The sleep earphone circuit structure of claim 2, wherein: The main control module also includes a crystal oscillator module composed of a crystal oscillator Y1 and a left and right ear distinguishing resistor R20, wherein the crystal oscillator Y1 is connected with XOSCO pin and XOSCI pin of the main control chip U1, and the left and right ear distinguishing resistor R20 is connected with ADC10 / PC0 / USBDP pin of the main control chip U1.

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