WO2021022978A1

WO2021022978A1 - Charging case for efficient and stable communication, and communication method for charging case

Info

Publication number: WO2021022978A1
Application number: PCT/CN2020/101653
Authority: WO
Inventors: 谢金生; 陈龙; 张昊; 许奇; 周思静
Original assignee: 深圳市岍丞技术有限公司
Priority date: 2019-08-02
Filing date: 2020-07-13
Publication date: 2021-02-11
Also published as: CN110474388A

Abstract

The present invention provides a charging case for efficient and stable communication, comprising an MCU controller, a BOOST circuit, a charging and communication conversion circuit, a communication interface and a sensor for detecting a switch cover, an output end of the MCU controller being connected to an input end of the BOOST circuit, an output end of the BOOST circuit being connected to the charging communication conversion circuit, the MCU controller being connected to the charging and communication conversion circuit by means of the communication interface, and an output end of the sensor being connected to the MCU controller. The present invention further provides a communication method for the charging case according to any one of above. The present invention has the beneficial effects that an MCU controller controls a BOOST circuit and a charging and communication conversion circuit to achieve core functions of efficient and stable communication and pairing in a case, thereby finally achieving the purposes of intelligent control and communication interaction.

Description

High-efficiency and stable communication charging bin and charging bin communication method

Technical field

The invention relates to a charging bin, in particular to a charging bin with high efficiency and stable communication and a communication method for the charging bin.

Background technique

TWS (True Wireless Stereo, true wireless stereo) headset can be said to be a product of the trend of the times. In addition to canceling the 3.5mm interface on the mobile phone and eliminating the cumbersome headset cable on the headset side, it can also achieve dual-use, portable, intelligent voice and other functions. With the continuous improvement of people's daily needs and the continuous optimization of portable methods, traditional earphones have been difficult to meet the needs in use. So with the continuous development of smart hardware, TWS headsets have become more and more popular in the market. With the release of Apple's Airpods, the wireless Bluetooth headset market has reached a climax. Since there is no physical connection between the left and right earphones of TWS earphones, and TWS earphones generally do not have a MicroUSB interface for charging, almost all TWS will be equipped with a portable box with charging and storage functions, which is what we call a charging compartment. When the TWS headset is out of power, it can be placed in the box, automatically disconnected, and charged. Generally, the serial port charging compartment is only for charging the TWS headset. This operation is not very reasonable and effective. How to provide a charging compartment that can communicate with the TWS headset efficiently and stably and realize intelligent control is an urgent need for those skilled in the art Technical problems solved.

technical problem

Technical solutions

In order to solve the problems in the prior art, the present invention provides a charging bin with high efficiency and stable communication and a communication method for the charging bin.

The present invention provides a high-efficiency and stable communication charging compartment, which includes an MCU controller, a BOOST circuit, a charging communication conversion circuit, a communication interface and a sensor for detecting the switch cover, wherein the output terminal of the MCU controller is connected to the The input terminal of the BOOST circuit is connected, the output terminal of the BOOST circuit is connected to the charging communication conversion circuit, the MCU controller is connected to the charging communication conversion circuit through the communication interface, and the output terminal of the sensor is connected to the charging communication conversion circuit. The MCU controller is connected, and the MCU controller controls the BOOST circuit to output to the earphone terminal for charging, or the MCU controller controls the BOOST circuit to not output, but switches to the communication interface to communicate with the earphone terminal Interactively, the MCU controller controls the charging communication conversion circuit to switch the communication function or the charging function.

As a further improvement of the present invention, the charging compartment further includes an earphone charging cable, the communication interface is a UART serial communication interface, and the TX and RX of the UART serial communication interface are simultaneously connected to the earphone charging cable.

As a further improvement of the present invention, the earphone charging cable is a 5V/SDA cable, the charging compartment is also provided with a ground wire, and the charging compartment and the earphone terminal are physically connected only through the earphone charging cable and the ground wire.

As a further improvement of the present invention, the TX and RX of the UART serial communication interface of the earphone are also connected to the 5V/SDA line at the same time.

As a further improvement of the present invention, the MCU controller is connected with a MicroUSB interface for realizing communication between the PC upper computer and the charging compartment or direct communication between the PC upper computer and the earphone, and the MicroUSB interface is connected with the UART serial communication interface; The MCU controller is connected with an LED indicator that displays the charging effect or displays a low battery prompt by flashing.

As a further improvement of the present invention, the charging communication conversion circuit is a switch circuit that realizes switching between 5V and DATA data lines.

As a further improvement of the present invention, the MCU controller controls the BOOST circuit to enable output of 5V, and the charging communication conversion circuit switches the on-voltage to the output of 5V to charge the earphone terminal. When communication is required, the The MCU controller controls the BOOST circuit not to output 5V, and the switch of the charging communication conversion circuit is switched to the DATA data line. At this time, the MCU controller performs two-way communication interaction with the earphone terminal through the DATA data line.

As a further improvement of the present invention, the sensor is a Hall sensor, which assists in charging or communication by detecting the opening and closing of the cover. When the cover is opened, the charging compartment communicates with the earphone terminal, and when the cover is closed, Charge after the set time.

The present invention also provides a communication method of the charging bin according to any one of the above, including the following steps:

S101, turn on;

S102: Detect whether the charging compartment is opened by the sensor, if the lid is not opened, enter the box closing process, if the lid is opened, enter the box opening process;

The opening process is as follows:

S201. The earphone terminal communicates and forms a team through the charging compartment;

S202: Judge whether the team formation is successful, if it is unsuccessful, repeat step S202 after the set time, and if it succeeds, proceed to the next step;

S203. Broadcast headset power and charging bin power;

S204. Pair and connect the charging compartment with the mobile phone;

The closing process is as follows:

S301. The charging compartment communicates with the earphone terminal. After a set time, the communication is closed, and the MCU controller turns on the output of the BOOST circuit to charge the earphone terminal;

S302. During the charging process, periodically detect whether the headset is fully charged, and if fully charged, proceed to the next step;

S303. The MCU controller turns off the output of the BOOST circuit and reports the power of the charging bin;

S304. The earphone terminal is turned off, and the charging compartment enters a low power consumption mode.

As a further improvement of the present invention, in step S201, when the master and slave earphones are placed in the charging compartment at the same time, the MCU controller obtains the mac address of the master and slave earphones through communication interaction, and then sets the two mac addresses of the master and slave earphones Notify each other, and the master and slave headsets directly pair up in teams through the other's mac address to achieve fast pairing.

Beneficial effect

The beneficial effects of the present invention are: through the above solution, the BOOST circuit and the charging communication conversion circuit are controlled by the MCU controller to realize the core functions of high efficiency, stable communication, and matching in the box, and finally achieve the purpose of intelligent control and communication interaction.

Description of the drawings

Figure 1 is a system framework diagram of a charging bin with high efficiency and stable communication according to the present invention.

2 is a circuit diagram of a charging communication conversion circuit of a left earphone of a charging compartment with high efficiency and stable communication according to the present invention.

Fig. 3 is a circuit diagram of a charging communication conversion circuit of a right earphone of a charging compartment with high efficiency and stable communication according to the present invention.

Fig. 4 is a flow chart of opening a box of a charging compartment with high efficiency and stable communication according to the present invention.

Fig. 5 is a flow chart of closing a charging compartment with high efficiency and stable communication according to the present invention.

Embodiments of the invention

The present invention will be further described below in conjunction with the description of the drawings and the specific embodiments.

As shown in Figures 1 to 3, a high-efficiency and stable communication charging compartment (TWS charging compartment) 100 includes an MCU controller 1, a BOOST circuit 2, a charging communication conversion circuit 3, a communication interface and a sensor for detecting the switch cover , Wherein the output terminal of the MCU controller 1 is connected to the input terminal of the BOOST circuit 2, the output terminal of the BOOST circuit 2 is connected to the charging communication conversion circuit 3, and the MCU controller 1 The communication interface is connected to the charging communication conversion circuit 3, the output terminal of the sensor is connected to the MCU controller 1, and the MCU controller 1 controls the BOOST circuit 2 to output to the earphone terminal 200 for charging, or the The MCU controller 1 controls the BOOST circuit 2 not to output, but switches to the communication interface to communicate with the earphone terminal 200. The MCU controller 1 controls the charging communication conversion circuit 3 to switch the communication function or charge Features.

As shown in Figures 1 to 3, the charging compartment 100 also includes a headset charging cable, the communication interface is a UART serial communication interface 4, and the TX and RX of the UART serial communication interface 4 are simultaneously connected to the headset charging cable on.

As shown in Figures 1 to 3, the earphone charging cable is a 5V/SDA cable, and the charging compartment 100 is also provided with a ground wire. The charging compartment 100 and the earphone terminal 200 only use the earphone charging cable and the ground wire. Physical connection.

As shown in FIGS. 1 to 3, the TX and RX of the UART serial communication interface 4 of the earphone terminal 200 are also simultaneously connected to the 5V/SDA line.

As shown in Figures 1 to 3, the MCU controller 1 is connected with a MicroUSB interface 5 that realizes the communication between the PC host computer and the charging compartment 100 or the direct communication between the PC host computer and the earphone terminal 200. The MicroUSB interface 5 is connected to The UART serial communication interface 4 is connected; the MCU controller 4 is connected with an LED indicator 7 that displays the charging effect or displays a low-power prompt by flashing.

As shown in FIGS. 1 to 3, the charging communication conversion circuit 3 is a switch circuit that realizes the switching of the 5V and DATA data lines.

As shown in Figures 1 to 3, the MCU controller 1 controls the BOOST circuit 2 to enable the output of 5V, and the charging communication conversion circuit 3 switches the on-voltage to the output of 5V to charge the earphone terminal 200. During communication, the MCU controller 1 controls the BOOST circuit 2 not to output 5V, and the switch of the charging communication conversion circuit 3 is switched to the DATA data line. At this time, the MCU controller 1 communicates with the headset via the DATA data line. The terminal 200 performs two-way communication interaction.

As shown in Figures 1 to 3, the sensor is a Hall sensor (HALL) 6, which assists in charging or communication by detecting opening and closing of the lid. When the lid is opened, the charging compartment 100 communicates with the earphone terminal 200 , With the cover closed, charge after the set time.

As shown in Fig. 1 to Fig. 3, the earphone terminal 200 includes two earphones, the left earphone and the right earphone. SWITCH) 3 has two in total and corresponds to the left earphone and the right earphone respectively.

As shown in Fig. 1 to Fig. 3, a high-efficiency and stable communication charging bin provided by the present invention, the function of each module is as follows:

1) MCU controller 1

As the core part of the charging compartment 100, MCU controller 1 can control the 5V output of BOOST circuit 2 to charge the left and right earphones, or control the 5V of BOOST circuit 2 to not output, but switch to the communication interface. The communication used in this design The interface is UART serial communication interface 4. The MCU controller 1 switches the communication or charging function of the charging compartment 100 through the charging communication conversion circuit 3. The hardware design is to connect the TX and RX of the UART serial communication interface 4 to the 5V/SDA line at the same time, and then this line It is the headset charging cable. When there is no 5V output, the TX and RX of the UART of the headphone terminal 200 will also be connected to this line at the same time. In this way, when the BOOST circuit 2 does not have a 5V output, the UART half-duplex communication will be realized, thereby realizing the intelligent control and interaction of the two wires of the charging compartment 100 and the earphone terminal 200. After the charging compartment 100 realizes the communication interaction with the earphone terminal 200, this function can be used to realize the teaming of the master and slave earphones in the box. When both the master and slave earphones are placed in the charging compartment 100 at the same time, the MCU controller 1 can obtain the mac addresses of the two earphones through communication interaction, and then notify the two earphones of the two mac addresses to each other. You can directly group and pair through the other party's mac address to realize the problem of quickly pairing the headset. This method is very stable and the security box is convenient. When the MicroUSB interface is inserted into the charging compartment 100, it can detect the serial data of the MicroUSB UART. The MCU controller 1 can control the UART serial communication interface 4 of the charging compartment 100, and can directly connect the TX and RX of the MicroUSB UART to the 5V/SDA line, and directly allow the MicroUSB to communicate with the headset terminal 200. The advantage of this is that it can Directly use the PC host computer to debug and control the earphone terminal 200. You can also receive the earphone's UART serial port print information on the PC side, which is convenient for debugging. The most important thing is that you can use the PC tool to directly upgrade the earphone. , Without MCU control.

2) BOOST circuit 2

The BOOST circuit 2 is a boost circuit, which boosts the battery voltage of the charging compartment 100 to 5V through the boost circuit, and then outputs it to charge the earphones to realize the charging function. The BOOST circuit 2 is controlled by the MCU controller 1 to enable the output of 5V, which can control the output voltage or output data to the headphones, and the MCU controller 1 controls the BOOST circuit 2 to save power consumption, such as when charging or shutting down The output of BOOST circuit 2 can be turned off.

3) LED indicator 7

The LED indicator 7 has two main functions. One is to display the charging effect when charging, and the other is to prompt the current remaining circuit in the charging compartment. If the charging compartment is low-power, it can display the flashing of the low-power prompt. The LED indicator 7 can visually display the power status.

4) Charging communication conversion circuit 3

The charging communication conversion circuit 3 is actually a switching circuit, which mainly realizes the switching of 5V and DATA data lines. This switching operation is mainly controlled by the MCU controller 1. The MCU controller 1 controls the BOOST circuit 2 to enable the output of 5V, and the charging communication conversion circuit 3 will switch the on-voltage to the output of 5V to charge the earphone terminal 200. When communication is required, MCU controller 1 will control BOOST circuit 2 not to output 5V, so that the switch of charging communication conversion circuit 3 will be switched to the DATA data line, then MCU controller 1 can connect to the earphone terminal through the DATA data line 200 for two-way communication.

5) MicroUSB interface 5

The MicroUSB interface 5 mainly realizes the communication between the PC host computer and the charging warehouse 100 through the UART serial communication interface 4, or the direct communication between the PC host computer and the earphone terminal 200. The MicroUSB interface 5 can switch the connection mode to enable the PC host computer to communicate with the charging compartment 100 or the earphone terminal 200, which is conducive to debugging, production testing and other later maintenance work.

6) Hall sensor 6

The Hall sensor (HALL) 6 is mainly used to detect the opening and closing of the charging compartment 100, and then assists in charging or communication by detecting the opening and closing of the cover. Now it is defined that the charging compartment 100 and the charging compartment 100 and The earphone terminal 200 communicates and charges after 10 seconds with the cover closed.

As shown in FIG. 4 to FIG. 5, a communication method for a charging bin according to any one of the above includes the following steps:

S101, turn on;

S102. Detect whether the charging compartment 100 is opened by the sensor, if the lid is not opened, enter the box closing process, if the lid is opened, enter the box opening process;

The opening process is as follows:

S201. The charging compartment 100 communicates with the earphone terminal 200, and the earphone terminal 200 forms a team;

S203. Broadcast headset power and charging bin power;

S204, the charging warehouse 100 is paired and connected with the mobile phone;

The closing process is as follows:

S301. The charging compartment 100 communicates with the earphone terminal 200. After 5 seconds, the communication is closed, and the MCU controller 1 turns on the output of the BOOST circuit 2 to charge the earphone terminal 200;

S303. The MCU controller 1 turns off the output of the BOOST circuit 2, and reports the power of the charging bin 100;

S304, the earphone terminal 200 is turned off, and the charging compartment 100 enters a low power consumption mode.

As shown in Figures 4 to 5, in step S201, when the master and slave headphones are both placed in the charging compartment at the same time, the MCU controller obtains the mac address of the master and slave headphones through communication interaction, and then connects the two The mac addresses are notified to each other, and the master and slave headsets are directly paired in a team through the mac address of the other party to achieve fast in-box pairing.

The present invention provides a high-efficiency and stable communication charging bin and a communication method for the charging bin. The charging bin (TWS charging bin) 100 is integrated with an MCU controller 1, a BOOST circuit 2, an LED indicator 7, and a charging communication conversion circuit 3. Module components such as MicroUSB interface 5 and Hall sensor 6. This solution mainly realizes the core function of high-efficiency and stable communication through the MCU controller 1 controlling the BOOST circuit 2 and the charging communication conversion circuit 3, and finally achieves intelligent control and communication interaction. Detecting and assisting communication through the MicroUSB interface 5 and the Hall sensor 6 is also one of the conditions for judging communication. The physical connection between the charging compartment 100 and the earphone terminal 200 (TWS earphone) has only two connection points, the charging wire and the ground wire. These two wires are used to realize the charging and communication functions. Compared with the three-wire and four-wire performance, the connection Fewer lines and less line connections are easier and cost-saving.

The present invention provides a high-efficiency and stable communication charging bin and a communication method for the charging bin, which solves the problem of difficult communication between the charging bin 100 and the earphone terminal 200, reduces the connection lines, and stabilizes the communication, and also solves the problem of master-slave communication. The problem of pairing and teaming of headsets.

The above content is a further detailed description of the present invention in combination with specific preferred embodiments, and it cannot be considered that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

A high-efficiency and stable communication charging compartment, which is characterized in that it includes an MCU controller, a BOOST circuit, a charging communication conversion circuit, a communication interface, and a sensor for detecting a switch cover, wherein the output terminal of the MCU controller is connected to the The input terminal of the BOOST circuit is connected, the output terminal of the BOOST circuit is connected to the charging communication conversion circuit, the MCU controller is connected to the charging communication conversion circuit through the communication interface, and the output terminal of the sensor is connected to the charging communication conversion circuit. The MCU controller is connected, and the MCU controller controls the BOOST circuit to output to the earphone terminal for charging, or the MCU controller controls the BOOST circuit to not output, but switches to the communication interface to communicate with the earphone terminal Interactively, the MCU controller controls the charging communication conversion circuit to switch the communication function or the charging function.
The high-efficiency and stable communication charging compartment according to claim 1, characterized in that: the charging compartment further comprises a headset charging cable, the communication interface is a UART serial communication interface, the TX and RX of the UART serial communication interface At the same time, it is connected to the earphone charging line.
The charging compartment with high efficiency and stable communication according to claim 2, characterized in that: the earphone charging cable is a 5V/SDA cable, the charging compartment is also provided with a ground wire, and the charging compartment and the earphone terminal are only The physical connection is made through the headset charging cable and the ground wire.
The high-efficiency and stable communication charging compartment according to claim 2, wherein the TX and RX of the UART serial communication interface of the earphone terminal are also connected to the 5V/SDA line at the same time.
The high-efficiency and stable communication charging bin according to claim 2, wherein the MCU controller is connected with a MicroUSB interface that realizes the communication between the PC host computer and the charging bin or the direct communication between the PC host computer and the earphone. The MicroUSB interface is connected with the UART serial communication interface; the MCU controller is connected with an LED indicator that displays the charging effect or displays a low battery prompt by flashing.
The high-efficiency and stable communication charging compartment according to claim 1, wherein the charging communication conversion circuit is a switch circuit that realizes the switching of 5V and DATA data lines.
The charging compartment with high efficiency and stable communication according to claim 6, characterized in that: the MCU controller controls the BOOST circuit to enable the output of 5V, and the charging communication conversion circuit switches to the output of 5V through the conduction voltage Charge the earphone terminal. When communication is required, the MCU controller controls the BOOST circuit not to output 5V, and the switch of the charging communication conversion circuit is switched to the DATA data line. At this time, the MCU controller passes the DATA data The line communicates with the earphone terminal in two-way communication.
The high-efficiency and stable communication charging compartment according to claim 1, wherein the sensor is a Hall sensor, which assists in charging or communication by detecting the opening and closing of the cover, and the charging compartment is open when the cover is opened. Communicate with the earphone, and charge after the set time with the cover closed.
A communication method for a charging bin according to any one of claims 1 to 8, characterized in that it comprises the following steps:

S101, turn on;

S102: Detect whether the charging compartment is opened by the sensor, if the lid is not opened, enter the box closing process, if the lid is opened, enter the box opening process;

The opening process is as follows:

S201. The earphone terminal communicates and forms a team through the charging compartment;

S202: Judge whether the team formation is successful, if it is unsuccessful, repeat step S202 after the set time, and if it succeeds, proceed to the next step;

S203. Broadcast headset power and charging bin power;

S204. Pair and connect the charging compartment with the mobile phone;

The closing process is as follows:

S301. The charging compartment communicates with the earphone terminal. After a set time, the communication is closed, and the MCU controller turns on the output of the BOOST circuit to charge the earphone terminal;

S302. During the charging process, periodically detect whether the headset is fully charged, and if fully charged, proceed to the next step;

S303. The MCU controller turns off the output of the BOOST circuit and reports the power of the charging bin;

S304. The earphone terminal is turned off, and the charging compartment enters a low power consumption mode.
The communication method of the charging compartment according to claim 9, characterized in that: in step S201, when the master and slave earphones are placed in the charging compartment at the same time, the MCU controller obtains the mac address of the master and slave earphones through communication interaction. , And then notify each other of the two mac addresses of the master and slave headsets, and the master and slave headsets directly pair up in a team through the counterpart’s mac address to achieve quick pairing.

To