Double-antenna system of Bluetooth TWS earphone

Abstract

The utility model discloses a double-antenna system of a Bluetooth TWS earphone, comprising antennas and a control system, the antennas have wireless signals, the antennas comprise a first antenna and a second antenna, the first antenna is defined to be provided with radiation waves in a first predetermined direction, the second antenna is defined to be provided with radiation waves in a second predetermined direction, and the control system is connected with the first antenna and the second antenna. The control system is provided with a change-over switch; the change-over switch is used for switching the signal system to be connected with the first antenna or the second antenna; when the control system detects that the signal strength threshold value is smaller than a preset parameter or the error rate is higher than a preset threshold value, the control system controls the change-over switch to be connected with the first antenna or the second antenna. By arranging the first antenna with the radiation wave in the first preset direction and the radiation wave in the second preset direction, and changing the directions of the signal equipment and the antennas, the point-to-point signal transmission efficiency and communication rate are improved, that is, one more direction is provided, so that an antenna with a larger gain direction can be selected for communication.

Description

Technical Field

[0001] The utility model relates to the field of wireless earphone control systems, and in particular to a dual-antenna system for a Bluetooth TWS earphone. Background Art

[0002] TWS (True Wireless Stereo) headphones, true wireless headphones refer to headphones without traditional connecting wires, including Bluetooth headphones, infrared headphones, etc. With the improvement and development of TWS technology, most major manufacturers launched their own brand of TWS headphones in 2019.

[0003] Due to their compact size, Bluetooth TWS earphones have significant limitations on antenna effectiveness, especially in terms of antenna directionality. Bluetooth earphones typically use only one antenna, which results in radiation in a single, predetermined direction. When the radiator strays from the signal area, the Bluetooth signal deteriorates. This can cause music to freeze or make calls, hindering the user experience. Utility Model Content

[0004] The main purpose of this utility model is to propose a dual-antenna system for Bluetooth TWS headsets, which aims to use dual antennas to increase the directivity of the two antennas. Compared with the traditional single antenna used in Bluetooth TWS headsets, it has one more directionality, so that an antenna with a larger gain direction can be selected for communication.

[0005] The signal quality of Bluetooth TWS headsets is greatly enhanced, and the user experience is greatly improved.

[0006] To achieve the above objectives, the present invention proposes a dual-antenna system for a Bluetooth TWS headset, comprising:

[0007] An antenna having a wireless signal, the antenna comprising a first antenna and a second antenna, the first antenna being defined as radiating waves with a first predetermined direction, and the second antenna being defined as radiating waves with a second predetermined direction;

[0008] A control system, wherein the control system is provided with a switch, wherein the switch is used to switch the signal system to be connected to the first antenna or the second antenna;

[0009] When the control system detects that the signal strength threshold is less than a predetermined parameter or the bit error rate is higher than a predetermined threshold, the control system controls the switch to connect to the first antenna or the second antenna.

[0010] In actual design, due to changes in the signal position of the signal interaction machine or the design of the antenna direction, existing headphones occasionally experience frequency interruption or signal loss, which in turn affects usage. By setting a first antenna with a radiation wave in a first predetermined direction and a radiation wave with a second predetermined direction, when the control system detects that the signal strength threshold of one of the antennas is less than a predetermined parameter or the bit error rate is higher than a predetermined threshold, it switches to the other antenna through a switch, and then uses the control system to judge whether the signal strength threshold and the bit error rate threshold meet the predetermined requirements. If they meet the requirements, the connection continues. If they do not meet the requirements, it switches to the original antenna. By changing the direction of the signal device and the antenna, the point-to-point signal transmission efficiency and communication rate are improved, that is, an additional directionality is added, so that an antenna with a larger gain direction can be selected for communication. The signal quality of the Bluetooth TWS headset is greatly enhanced, and the quality of user experience is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of the utility model.

[0012] In the figure, 11 is the first antenna, 12 is the second antenna,

[0013] 2 is the control system, 20 is the switch,

[0014] 3 is the screening module. DETAILED DESCRIPTION

[0015] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0017] In addition, if there are descriptions involving "first" or "second" in the embodiments of the present invention, the descriptions of "first" or "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0018] like Figure 1 As shown, a dual-antenna system for a Bluetooth TWS headset includes:

[0019] An antenna having a wireless signal, the antenna comprising a first antenna and a second antenna, the first antenna being defined as radiating waves with a first predetermined direction, and the second antenna being defined as radiating waves with a second predetermined direction;

[0020] A control system, wherein the control system is provided with a switch, wherein the switch is used to switch the signal system to be connected to the first antenna or the second antenna;

[0021] Also included is a screening device for recording the last position of the switch;

[0022] When the control system detects that the signal strength threshold is less than a predetermined parameter or the bit error rate is higher than a predetermined threshold, the control system controls the switch to connect to the first antenna or the second antenna.

[0023] In actual design, due to changes in the signal position of the signal interaction machine or the design of the antenna direction, existing headphones occasionally experience frequency interruption or signal loss, which in turn affects usage. By setting a first antenna with a radiation wave in a first predetermined direction and a radiation wave with a second predetermined direction, when the control system detects that the signal strength threshold of one of the antennas is less than a predetermined parameter or the bit error rate is higher than a predetermined threshold, it switches to the other antenna through a switch, and then uses the control system to judge whether the signal strength threshold and the bit error rate threshold meet the predetermined requirements. If they meet the requirements, the connection continues. If they do not meet the requirements, it switches to the original antenna. By changing the direction of the signal device and the antenna, the point-to-point signal transmission efficiency and communication rate are improved, that is, an additional directionality is added, so that an antenna with a larger gain direction can be selected for communication. The signal quality of the Bluetooth TWS headset is greatly enhanced, and the quality of user experience is greatly improved.

[0024] Specifically, the control system includes a counter that sends a predetermined warning message to the device if the switch is toggled more than three times within a predetermined time period. For example, three times within one minute, this prevents repeated switching from confusing the control system and causing burn-in, which could affect the stability of the headset.

[0025] In an embodiment of the present invention, when the switching switch is switched multiple times, the control system records the signal strength each time and switches to the antenna position with the strongest signal strength for the last time through the screening module 3, that is, through the comparison system, analyzes which antenna signal stability is achieved, and then switches to the optimal route.

[0026] The main chip SOC is a single-chip microcomputer 8051.

[0027] Specifically, the control system is a main chip SOC; wherein the main chip SOC is a conventional audio chip, for example, the GPIO function is similar to P0-P3 of 8051, and its pins can be freely used by the user through program control. The PIN pins can be used as general-purpose input (GPI) or general-purpose output (GPO) or general-purpose input and output (GPIO) according to practical considerations, such as when serving as clk generator, chipselect, etc.

[0028] For input, the pin voltage level can be determined by reading a register; for output, the pin can be made to output a high or low voltage by writing to a register; for other special functions, there are other registers to control them.

[0029] In an embodiment of the present invention, the switching switch is an RF switch, that is, the switching is controlled by an electrical signal.

[0030] Specifically, the wireless signal is a 2.4G or Bluetooth signal, and the corresponding signal system is a Bluetooth transceiver or a 2.4G transceiver.

[0031] In the embodiment of the present invention, the corresponding signal system is a Bluetooth transceiver or a 2.4G transceiver.

[0032] Specifically, the angle between the first predetermined direction and the second predetermined direction is greater than 60 degrees, thereby radiating the peripheral signal range of the earphone in the maximum range.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the practical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A dual antenna system for a Bluetooth TWS headset, characterized in that: include: An antenna having a wireless signal, the antenna comprising a first antenna and a second antenna, the first antenna being defined as radiating waves with a first predetermined direction, and the second antenna being defined as radiating waves with a second predetermined direction; A control system, wherein the control system is provided with a switch, wherein the switch is used to switch the signal system to be connected to the first antenna or the second antenna, and the control system controls the switch to be connected to the first antenna or the second antenna; The control system is provided with a counter, The control system records the signal strength each time and also includes a screening device, wherein the screening device is used to record the position of the switch at the last time; The control system is a main chip SOC, and the main chip SOC is a single-chip microcomputer 8051; The switching switch is an RF switch; The wireless signal is a 2.4G or Bluetooth signal; The corresponding signal system is a Bluetooth transceiver or a 2.4G transceiver; The angle between the first predetermined direction and the second predetermined direction is greater than 60 degrees.

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