CN205081922U - Automatic motion bluetooth headset who falls function of making an uproar in area - Google Patents

Abstract

The utility model provides a sports bluetooth earphone with an automatic noise reduction function, comprising: an automatic noise reduction module that is connected to an audio source and neutralizes the audio noise output by the audio source; and the automatic noise reduction module Connect the USB charging module for powering the automatic noise reduction module. The embodiment of the utility model achieves the effect of neutralizing and reducing the audio noise and avoiding noise interference by setting an automatic noise reduction module. In addition, the USB charging module can realize charging and data transmission of the sports Bluetooth headset anytime and anywhere. The embodiment of the utility model is simple to implement, does not need to add additional hardware, can effectively reduce costs, and has strong usability and practicability.

Description

A sports bluetooth earphone with automatic noise reduction function

technical field

The utility model relates to an earphone, in particular to a sports bluetooth earphone with an automatic noise reduction function.

Background technique

Electronic devices are becoming more and more popular, and the electronic devices are developing toward diversification. Many electronic devices also have functions such as taking photos, playing audio and video, and browsing the Internet. When using electronic devices for audio and video playback, earphones are often used. The earphones can be used to listen to audio, but they also receive noise during the process of listening to audio. Especially when the microphone attached to the earphone receives signals or receives FM signals, the noise interference is particularly serious.

Utility model content

The purpose of the utility model is to provide a sports bluetooth earphone with an automatic noise reduction function, aiming at solving the problem of noise interference when using the earphone to listen to audio.

The utility model provides a sports bluetooth earphone with an automatic noise reduction function, comprising:

An automatic noise reduction module that neutralizes and reduces the audio noise output by the audio source by connecting to the audio source;

A USB charging module connected with the automatic noise reduction module to provide power for the automatic noise reduction module.

In the above structure, the automatic noise reduction module includes a control main chip U1, and the control main chip U1 includes:

Left channel positive feedback terminal MIC0P, left channel negative feedback terminal MIC1P, right channel positive feedback terminal MIC2P, right channel negative feedback terminal MIC3P, voice call terminal MIC4P and empty terminal MIC5P;

The positive feedback terminal MIC0P of the left channel, the negative feedback terminal MIC1P of the left channel, the positive feedback terminal MIC2P of the right channel, the negative feedback terminal MIC3P of the right channel, the voice call terminal MIC4P and the empty terminal MIC5P respectively through the capacitor C1, the capacitor C2, Capacitor C3, capacitor C4, capacitor C5 and capacitor C6 are connected to the audio source.

In the above structure, the USB charging module includes a USB charging chip U2, and the USB charging chip U2 includes:

The second charging data positive signal terminal USB_dp and the second charging data negative signal terminal USB_dm;

The second charging data positive signal terminal USB_dp is connected to the first charging data positive signal terminal USB_DP of the control main chip U1, and the second charging data negative signal terminal USB_dm is connected to the first charging data negative signal terminal of the control main chip U1. Signal port USB_DM.

In the above structure, the sports bluetooth headset with automatic noise reduction function also includes:

A bluetooth module connected with the automatic noise reduction module for data interaction with external electronic equipment.

In the above structure, the bluetooth module adopts the bluetooth chip U3, the second receiving end pin LX_UART_rx of the bluetooth chip U3, the second transmitting end pin LX_UART_tx, the second canceling sending end pin LX_UART_cts and the second request sending end pipe The pins LX_UART_pts are respectively connected to the first receiving end pin LX_UART_RX, the first transmitting end pin LX_UART_TX, the first canceling sending end pin LX_UART_CTS and the first request sending end pin LX_UART_PTS of the control main chip U1.

The embodiment of the utility model achieves the effect of neutralizing and reducing the audio noise and avoiding noise interference by setting an automatic noise reduction module.

Description of drawings

Fig. 1 is a kind of module structure schematic diagram inside the sports bluetooth earphone with automatic noise reduction function of the utility model;

Fig. 2 is a schematic diagram of the circuit connection structure inside a sports bluetooth earphone with automatic noise reduction function of the present invention.

detailed description

In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Fig. 1 shows a module structure of a sports bluetooth earphone with automatic noise reduction function of the present invention, and for convenience of explanation, only shows the part related to the embodiment of the present invention.

A sports bluetooth earphone 10 with automatic noise reduction function includes an automatic noise reduction module 101 , a USB charging module 102 and a bluetooth module 103 . The automatic noise reduction module 101 is connected with both the USB charging module 102 and the Bluetooth module 103 . Moreover, the automatic noise reduction module 101 is connected to an audio source. The USB charging module 102 directly supplies power to the automatic noise reduction module 101 , and indirectly supplies power to the Bluetooth module 103 through the connection between the automatic noise reduction module 101 and the Bluetooth module 103 . The function of the automatic noise reduction module 101 is to automatically reduce the interference of noise when the user listens to the audio with the earphone, so that the user can feel better hearing effect. The function of the bluetooth module 103 is to perform bluetooth matching with other electronic devices such as mobile phones, tablets, etc., to achieve the effect of data connection or conversation.

Fig. 2 shows the circuit connection structure of a sports bluetooth earphone with automatic noise reduction function provided by the embodiment of the present invention. For the convenience of description, only the parts related to the embodiment of the present invention are shown.

As an embodiment of the present utility model, the automatic noise reduction module 101 includes a control main chip U1, and a plurality of pins are arranged on the left side of the control main chip U1, which are respectively the left channel positive feedback terminal MICOP, the left channel Negative feedback terminal MIC1P, right channel positive feedback terminal MIC2P, right channel negative feedback terminal MIC3P, voice call terminal MIC4P, empty terminal MIC5P, first charging data positive signal terminal USB_DP and first charging data negative signal terminal USB_DM. Left channel positive feedback terminal MIC0P, left channel negative feedback terminal MIC1P, right channel positive feedback terminal MIC2P, right channel negative feedback terminal MIC3P, voice call terminal MIC4P, empty terminal MIC5P, first charging data positive signal terminal USB_DP and The negative signal terminals USB_DM of the first charging data are arranged sequentially from top to bottom. The right side of the control main chip U1 is also provided with a plurality of pins, which are respectively the first receiving end pin LX_UART_RX, the first transmitting end pin LX_UART_TX, the first canceling sending end pin LX_UART_CTS and the first request sending end pin Pin LX_UART_PTS. The first receiving end pin LX_UART_RX, the first transmitting end pin LX_UART_TX, the first canceling sending end pin LX_UART_CTS and the first request sending end pin LX_UART_PTS are also arranged in order from top to bottom. In this embodiment, the control main chip U1 adopts a main control chip of the model AV3200. Of course, the model of the main control chip is not limited, as long as it can achieve the functions described in the control main chip U1 of this embodiment.

The left channel positive feedback terminal MIC0P, the left channel negative feedback terminal MIC1P, the right channel positive feedback terminal MIC2P, the right channel negative feedback terminal MIC3P, the voice call terminal MIC4P and the empty terminal MIC5P on the control main chip U1 respectively pass Capacitor C1 , capacitor C2 , capacitor C3 , capacitor C4 , capacitor C5 and capacitor C6 are connected to the audio source, and each capacitor, namely C1 , C2 , C3 , C4 , C5 and C6 has a capacity of 1uF.

The positive feedback terminal MIC0P of the left channel, the negative feedback terminal MIC1P of the left channel, the positive feedback terminal MIC2P of the right channel and the negative feedback terminal MIC3P of the right channel play the function of noise reduction, that is, the audio source passes through the positive feedback terminal of the left channel When MIC0P, left channel negative feedback terminal MIC1P, right channel positive feedback terminal MIC2P and right channel negative feedback terminal MIC3P enter the control main chip U1, they will generate equal reverse sound waves according to the external noise of the sound to neutralize the noise , so as to achieve the effect of noise reduction. Since the sports Bluetooth headset has a left channel and a right channel, each channel controls its audio through two terminals, that is, the left channel positive feedback terminal MIC0P and the left channel negative feedback terminal MIC1P control the left channel, and One of the left channel positive feedback terminal MIC0P and the left channel negative feedback terminal MIC1P is a positive feedback system and the other is a negative feedback system, and the two complement each other; similarly, the right channel positive feedback terminal MIC2P and the right channel negative feedback terminal MIC3P controls the right channel, and one of the right channel positive feedback terminal MIC2P and the right channel negative feedback terminal MIC3P is a positive feedback system and the other is a negative feedback system, and the two complement each other. The role of the voice call terminal MIC4P is the call function, that is, the microphone of the sports Bluetooth headset performs language transmission by controlling the voice call terminal MIC4P on the main chip U1. The empty terminal MIC5P is an empty terminal and can be used as a spare terminal. When the sports Bluetooth headset needs additional functions, it can be programmed to set the empty terminal MIC5P to meet the needs, or when the left channel positive feedback terminal MIC0P and the left channel negative feedback terminal MIC1P , right channel positive feedback terminal MIC2P, right channel negative feedback terminal MIC3P and voice communication terminal MIC4P, when any audio terminal fails, the empty terminal MIC5P can also be supplemented in time.

As an embodiment of the present invention, the USB charging module 102 includes a USB charging chip U2, the USB charging chip U2 includes a second charging data positive signal terminal USB_dp and a second charging data negative signal terminal USB_dm, the second charging data The positive signal terminal USB_dp and the second charging data negative signal terminal USB_dm are respectively connected to the first charging data positive signal terminal USB_DP and the first charging data negative signal terminal USB_DM on the control main chip U1. The connection lines of the second charging data positive signal terminal USB_dp, the second charging data negative signal terminal USB_dm, the first charging data positive signal terminal USB_DP and the first charging data negative signal terminal USB_DM together form a loop, so as to control the main chip The effect of U1 power supply and data transmission.

As an embodiment of the present invention, the Bluetooth module 103 includes a Bluetooth chip U3, and the Bluetooth chip U3 is provided with a plurality of pins, which are respectively the second receiving end pin LX_UART_rx, the second transmitting end pin LX_UART_tx, the second 2. Eliminate the sender pin LX_UART_cts and the second request sender pin LX_UART_pts. The second receiving end pin LX_UART_rx, the second transmitting end pin LX_UART_tx, the second cancellation sending end pin LX_UART_cts and the second request sending end pin LX_UART_pts are arranged in order from top to bottom. The second receiving end pin LX_UART_rx, the second transmitting end pin LX_UART_tx, the second canceling sending end pin LX_UART_cts and the second request sending end pin LX_UART_pts on the Bluetooth chip U3 are respectively connected to the first receiving end on the control main chip U1 The pin LX_UART_RX, the first transmit end pin LX_UART_TX, the first cancel sender pin LX_UART_CTS, and the first request sender pin LX_UART_PTS. The control main chip U1 controls the Bluetooth chip U3 through the respective functions of the first receiving end pin LX_UART_RX, the first transmitting end pin LX_UART_TX, the first canceling sending end pin LX_UART_CTS and the first request sending end pin LX_UART_PTS, thereby realizing motion The Bluetooth headset can perform Bluetooth matching and data interaction functions with external electronic devices through the Bluetooth chip U3. In this embodiment, the bluetooth chip U3 adopts the bluetooth driver circuit chip CC256X. Of course, the model of the bluetooth chip is not limited, as long as it can achieve the functions described in the bluetooth chip U3 of this embodiment.

The working principle of a sports bluetooth earphone with automatic noise reduction function provided by the utility model is as follows:

First turn on the sports Bluetooth headset, since the left channel positive feedback terminal MIC0P and the left channel negative feedback terminal MIC1P are respectively connected to the audio source through capacitors C1 and C2, in the case of external noise interference, the automatic noise reduction module controls the main chip U1 The positive feedback terminal MIC0P of the left channel and the negative feedback terminal MIC1P of the left channel control the left channel to neutralize the noise; similarly, the positive feedback terminal MIC2P of the right channel and the negative feedback terminal MIC3P of the right channel are connected respectively through capacitors C3 and C4 The audio source, through the automatic noise reduction module, controls the right channel positive feedback terminal MIC2P and the right channel negative feedback terminal MIC3P in the main chip U1 to control the right channel to neutralize the noise and achieve the effect of automatic noise reduction. When listening to audio, you will enjoy better sound quality. At the same time, the call pin, that is, the voice call terminal MIC4P, is connected to the audio source through the capacitor C5, which can realize the function of language transmission with the outside.

Secondly, the second receiving end pin LX_UART_rx, the second transmitting end pin LX_UART_tx, the second canceling sending end pin LX_UART_cts and the second request sending end pin LX_UART_pts of the Bluetooth chip U3 are respectively connected to control the first receiving end on the main chip U1. The end pin LX_UART_RX, the first transmission end pin LX_UART_TX, the first cancellation sending end pin LX_UART_CTS and the first request sending end pin LX_UART_PTS enable the sports Bluetooth headset to perform Bluetooth matching and communication with external electronic devices through the Bluetooth chip U3. The function of data interaction.

Again, during use, the second charging data positive signal terminal USB_dp and the second charging data negative signal terminal USB_dm of the USB charging chip U2 are respectively connected to control the first charging data positive signal terminal USB_DP and the first charging data terminal USB_DP on the main chip U1. The negative signal terminal USB_DM can realize the charging of the automatic noise reduction module 101 through the USB charging module 102 anytime and anywhere, or the effect of data transmission when the USB interface is connected to the electronic device, such as adding the user's own power to the sports Bluetooth headset. favorite songs etc.

To sum up, the embodiment of the utility model achieves the effect of neutralizing and reducing audio noise and avoiding noise interference by setting an automatic noise reduction module. In the automatic noise reduction module, the positive feedback terminal MIC0P of the left channel, the negative feedback terminal MIC1P of the left channel, the positive feedback terminal MIC2P of the right channel, and the negative feedback terminal MIC3P of the right channel generate equal reverse signals according to the external noise of the sound. The sound wave can neutralize the noise and automatically reduce the noise when the sports Bluetooth headset is disturbed by external noise, so that the sound quality played by the headset is better. By setting up the Bluetooth module, it can be used for Bluetooth matching and data interaction with other external electronic devices. In addition, the USB charging module can realize charging and data transmission of the sports Bluetooth headset anytime and anywhere. The embodiment of the utility model is simple to implement, does not need to add additional hardware, can effectively reduce costs, and has strong usability and practicability.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (5)

1. be with a motion bluetooth earphone for automatic decrease of noise functions, it is characterized in that, comprising:

Connect audio-source, during the audio-frequency noise exported described audio-source carries out and the automatic noise reduction module of noise reduction;

Being connected with described automatic noise reduction module, is the USB charging module that described automatic noise reduction module is powered.

2. the motion bluetooth earphone of the automatic decrease of noise functions of band as claimed in claim 1, it is characterized in that, described automatic noise reduction module comprises a control master chip U1, and described control master chip U1 comprises:

L channel positive feedback end MIC0P, L channel negative feedback end MIC1P, R channel positive feedback end MIC2P and R channel negative feedback end MIC3P, voice call end MIC4P and dead end MIC5P;

Described L channel positive feedback end MIC0P, L channel negative feedback end MIC1P, R channel positive feedback end MIC2P and R channel negative feedback end MIC3P, voice call end MIC4P and dead end MIC5P connect described audio-source respectively by electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5 and electric capacity C6.

3. the motion bluetooth earphone of the automatic decrease of noise functions of band as claimed in claim 2, it is characterized in that, described USB charging module comprises a USB charging chip U2, and described USB charging chip U2 comprises:

Second charge data positive signal end USB_dp and the second charge data negative signal end USB_dm;

Described second charge data positive signal end USB_dp meets the first charge data positive signal end USB_DP of described control master chip U1, and described second charge data negative signal end USB_dm meets the first charge data negative signal end USB_DM of described control master chip U1.

4. the motion bluetooth earphone of the automatic decrease of noise functions of band as claimed in claim 2, it is characterized in that, the motion bluetooth earphone of the automatic decrease of noise functions of described band also comprises:

Be connected with described automatic noise reduction module, in order to carry out the bluetooth module of data interaction with external electronic device.

5. the motion bluetooth earphone of the automatic decrease of noise functions of band as claimed in claim 4, it is characterized in that, described bluetooth module adopts Bluetooth chip U3, the second receiving terminal pin LX_UART_rx of described Bluetooth chip U3, second transmission ends pin LX_UART_tx, second eliminates transmitting terminal pin LX_UART_cts and second request transmitting terminal pin LX_UART_pts meets the first receiving terminal pin LX_UART_RX controlling master chip U1 respectively, first transmission ends pin LX_UART_TX, first eliminates transmitting terminal pin LX_UART_CTS and first request transmitting terminal pin LX_UART_PTS.