CN111736688A - Bluetooth headset, system and method for gesture recognition thereof - Google Patents

Abstract

The invention discloses a bluetooth headset, a system and a gesture recognition method thereof. The bluetooth headset includes a radar device and a headset processor, the radar device is used to detect hand gestures and the position of the hand relative to the radar device; the headset processor is used to determine whether the radar device has detected Whether the first gesture is the first preset gesture, whether the position of the hand is within the range of the first preset position, and the duration of the hand staying at its position and the hand holding the first preset Whether the duration of the gesture is within the range of the preset duration, if both are yes, continue to judge whether the second gesture detected by the radar device is the second preset gesture, if it is the second preset gesture, then The second gesture is parsed into an instruction corresponding to the second preset gesture; wherein the first preset gesture is different from the second preset gesture. The present invention can reduce the probability that the radar triggers the gesture operation by mistake, and improve the user experience.

Description

Bluetooth headset, system and method for gesture recognition thereof

technical field

The invention relates to the field of bluetooth communication, in particular to a bluetooth headset, a system and a gesture recognition method thereof.

Background technique

As the technology of true wireless (TWS) Bluetooth headsets becomes more and more mature, users have higher and higher requirements for the experience of Bluetooth headsets, and the functions of Bluetooth headsets become more and more abundant. At present, there are headsets that use radar for gesture operation.

The patent document with publication number CN110018471A discloses a multi-function radar system, an operation method thereof, and a headset device, wherein a radar system is set in the Bluetooth headset, and the radar system can recognize the user's gesture and parse the gesture into a corresponding command, thereby realizing Corresponding functional operations, such as playing audio, pausing audio, answering calls, etc. The radar system can employ a two-dimensional millimeter wave (MMV) phased array radar that transmits and receives signals in the 50GHz to 80GHz range.

However, in the above-mentioned prior art, in order to realize multiple functional operations of the Bluetooth headset, it is necessary to set corresponding multiple gestures. In this way, the probability of the user making a gesture corresponding to the control operation inadvertently increases greatly, thereby increasing the user's false triggering of the Bluetooth headset. The probability of performing gesture operations greatly affects the user experience.

SUMMARY OF THE INVENTION

In order to solve the defect that the radar of the existing bluetooth earphone is easy to trigger the gesture operation by mistake, the present invention provides a bluetooth earphone, a system and a gesture recognition method thereof, so as to reduce the probability of the radar falsely triggering the gesture operation and improve the user experience.

A bluetooth headset, comprising a radar device and a headset processor, the radar device is used for detecting hand gestures and the position of the hand relative to the radar device; the headset processor is used for judging the detection of the radar device. Whether the first gesture is the first preset gesture, whether the position of the hand is within the range of the first preset position, and the duration of the hand staying at its position and the hand holding the first preset gesture Whether the continuous duration is greater than the first preset duration and less than the second preset duration, if both are yes, continue to determine whether the second gesture detected by the radar device is the second preset gesture, and if it is the second preset gesture. If a gesture is set, the second gesture is parsed into an instruction corresponding to the second preset gesture; wherein the first preset gesture is different from the second preset gesture.

Preferably, the earphone processor is further configured to determine whether the position of the second gesture is within the range of the second preset position after determining that the second gesture is the second preset gesture, and if so, only Parsing the second gesture into an instruction corresponding to the second preset gesture; wherein the second preset position range includes and is greater than the first preset position range.

Preferably, the Bluetooth headset further includes an electro-acoustic transducer, and the headset processor is further configured to issue a voice prompt corresponding to the instruction through the electro-acoustic transducer.

Preferably, the number of the first preset gestures is smaller than the number of the second preset gestures.

Preferably, the number of the first preset gesture is one.

Preferably, the first preset gesture is more complex than the second preset gesture.

Preferably, the first preset gesture is to stretch out the palm and put the five fingers together.

Preferably, the second preset gesture includes: the palm is extended, the thumb is open, and the remaining four fingers are closed; Translate the direction of the Bluetooth headset; or, keep the palm open and the thumb open, and the other four fingers together, and the palm rotates in the set direction; or, keep the palm open and the five fingers open; or, keep the palm open and the five fingers open , rotate the palm in the set direction, and then rotate it back to the original position.

The present invention also provides a bluetooth system, including a bluetooth headset and a mobile device, the bluetooth headset includes a radar device, a headset processor and a bluetooth communication module, the radar device is used to detect hand gestures, and the relative position of the hand to the radar The position of the device; the earphone processor is used to determine whether the first gesture detected by the radar device is a first preset gesture, whether the position is within the range of the first preset position, and the hand stays where it is Whether the duration of the position and the duration of the hand holding the first preset gesture is greater than the first preset duration and less than the second preset duration, if both are, continue to judge the first detected by the radar device. Whether the second gesture is the second preset gesture, if it is the second preset gesture, parse the second gesture into an instruction corresponding to the second preset gesture; the Bluetooth communication module is used to The instruction is sent to the mobile device; the mobile device is configured to receive the instruction and perform corresponding operations according to the instruction.

Preferably, the earphone processor is further configured to determine whether the position of the second gesture is within the range of the second preset position after determining that the second gesture is the second preset gesture, and if so, only Parsing the second gesture into an instruction corresponding to the second preset gesture; wherein the second preset position range includes and is greater than the first preset position range.

Preferably, the Bluetooth headset further includes an electro-acoustic transducer, and the headset processor is further configured to issue a voice prompt corresponding to the instruction through the electro-acoustic transducer.

The present invention also provides a method for gesture recognition of a Bluetooth headset, wherein the Bluetooth headset includes a radar device and a headset processor, and the method includes the following steps: the headset processor determines the first Whether the gesture is the first preset gesture, whether the position of the hand is within the range of the first preset position, and the duration of the hand staying at its position and the duration of the hand holding the first preset gesture Whether the duration is greater than the first preset duration and less than the second preset duration, if both are yes, continue to determine whether the second gesture detected by the radar device subsequently is the second preset gesture, if it is the second preset gesture , the second gesture is parsed into an instruction corresponding to the second preset gesture; wherein the first preset gesture is different from the second preset gesture.

Preferably, after determining that the second gesture is a second preset gesture, the earphone processor further determines whether the position where the second gesture is located is within the second preset position range, and if so, only The second gesture is parsed as an instruction corresponding to the second preset gesture; wherein, the second preset position range includes and is greater than the first preset position range.

Preferably, the bluetooth headset further includes an electro-acoustic transducer, and it is characterized in that the method further includes the following steps: the headset processor is further configured to send out, through the electro-acoustic transducer, an audio signal corresponding to the instruction Voice prompts.

The present invention also provides a gesture recognition method for a Bluetooth system, wherein the Bluetooth system includes a Bluetooth headset and a mobile device, the Bluetooth headset includes a radar device, a headset processor and a Bluetooth communication module, and the method includes the following steps : the radar device detects the gesture of the hand and the position of the hand relative to the radar device; the earphone processor determines whether the first gesture detected by the radar device is the first preset gesture, the position of the hand Whether the position of the hand is within the range of the first preset position, and whether the duration of the hand staying at its position and the duration of the hand holding the first preset gesture are greater than the first preset duration and less than the second preset duration. Set the duration, if both are yes, continue to judge whether the second gesture detected by the radar device is the second preset gesture, if it is the second preset gesture, then parse the second gesture as the same as the second gesture. The instruction corresponding to the second preset gesture; wherein, the first preset gesture is different from the second preset gesture; the Bluetooth communication module sends the instruction to the mobile device; the mobile device receives the instruction, and perform corresponding operations according to the instructions.

Beneficial effects:

Through the above solution, the probability of gesture recognition by the radar device being triggered by hand by mistake can be effectively reduced, and the user experience is improved. Specifically, it is possible to trigger gesture recognition when the hand is located in the first preset position range, which can effectively exclude unintentional actions of the user outside the first preset position range; only when the gesture is the first preset position It is possible to trigger gesture recognition, which can effectively exclude the user's unintentional gesture actions of the first preset gesture; when the gesture keeps the first preset gesture for a duration longer than the first preset duration and less than the second preset duration, you can Gestures outside the preset duration range are triggered by mistake, for example, the user inadvertently places his hand next to the headset and maintains a certain operation gesture for a long time (greater than the preset duration), or inadvertently removes his hand from the radar device of the Bluetooth headset Swipe in front (the time is less than the preset duration).

Preferably, in order to achieve more functional operations, a larger number of second preset gestures need to be set, and by setting the number of first preset gestures far smaller than the number of the second preset gestures, to further reduce the false triggering of the radar device 101 . The probability of gesture recognition. When there is one and only one first preset gesture, the probability of falsely triggering the radar device can be minimized.

Preferably, the first preset gesture is more complex than the second preset gesture. For example, compared with the second preset gesture, the first preset gesture requires more fingers to participate in the bending action, or requires more fingers to participate in the bending action. folding motion, and at least two fingers are bent in different directions, and so on. By setting the first preset gesture to be more complicated than the second preset gesture, it is more difficult for the radar device to be falsely triggered by the user's unintentional gesture.

Preferably, the power consumption of the millimeter-wave radar device is very low, and the power of the Bluetooth headset can be saved to the maximum while the gesture recognition is realized, which is of great significance for the limited power of the Bluetooth headset. In addition, because the Bluetooth headset and the Bluetooth chip themselves are radio frequency circuit structures, the millimeter-wave radar can share more functional circuits with the Bluetooth radio frequency.

Description of drawings

1 is a schematic diagram of an embodiment of a Bluetooth system of the present invention;

2 is a schematic diagram of an embodiment of a Bluetooth headset of the present invention;

3 is a schematic diagram of the application of the Bluetooth headset of the present invention;

4 is a schematic diagram of an embodiment of a gesture corresponding to a volume control instruction in a second preset gesture;

5 is a schematic diagram of another embodiment of the corresponding volume control gesture in the second preset gesture;

6 is a schematic diagram of an embodiment of the corresponding song switching instruction gesture in the second preset gesture;

7 is a schematic diagram of a more detailed embodiment of the Bluetooth headset of the present invention;

FIG. 8 is a schematic diagram of data interaction in the Bluetooth system of the present invention.

Detailed ways

In order to describe the technical solutions of the present invention in more detail and to facilitate further understanding of the present invention, the specific embodiments of the present invention are described below with reference to the accompanying drawings. However, it should be understood that all the exemplary embodiments and their descriptions are used to explain the present invention and do not constitute the only limitation of the present invention.

1 is a schematic diagram of an embodiment of the Bluetooth system of the present invention. The Bluetooth system includes a Bluetooth headset 10 and a mobile device 30, wherein the Bluetooth headset 10 is worn on a person's ear and can receive audio data and control commands sent from the mobile device 30. The mobile device 30 may be a smart phone with a Bluetooth communication module. 2 is a schematic diagram of an embodiment of the Bluetooth headset of the present invention. The Bluetooth headset 10 includes: a radar device 101, a headset processor 102, a Bluetooth communication module 103, a power supply module 104, and an electro-acoustic transducer 105. The power supply module 104 is used for Power is supplied to the radar device 101 , the earphone processor 102 , the Bluetooth communication module 103 and the electroacoustic transducer 105 , and the electroacoustic transducer 105 is used to convert the audio data sent by the earphone processor 102 into sound.

The radar device 101 may be a millimeter-wave radar device, and the electromagnetic wave emitted by it is a cone-shaped beam, and the wavelength of the electromagnetic wave is between 1-10 mm and the frequency is between 20-100 Ghz. Millimeter-wave radar devices have large bandwidth, high resolution, and small size of antenna components, which can adapt to harsh environments. The millimeter wave radar device has a simple structure and low cost, and is suitable for FMCW (frequency modulated continuous wave) radar modulation for short-range detection.

The radar device 101 is used to detect the gesture of the user's hand 20 and the position of the hand 20 relative to the radar device 101 ; the earphone processor 102 is used to determine whether the first gesture detected by the radar device 101 is the first preset gesture and the position of the hand 20 Whether the position of the hand 20 is within the range of the first preset position, and the duration of the hand 20 staying at the position of the hand 20, whether the duration of the hand 20 holding the first preset gesture is greater than the first preset duration and less than the second preset duration (ie Within the preset time range), if all are yes (that is, the above three conditions are met), the Bluetooth headset 10 has entered a state that can be called a gesture operation, and the headset processor 102 continues to determine the subsequent detection by the radar device 101. Whether the second gesture is the second preset gesture, and if it is the second preset gesture, the earphone processor 102 parses the second gesture into an instruction corresponding to the second preset gesture. The instruction may be an instruction executed by the Bluetooth headset 10 or an instruction sent to the mobile device 30 for execution. In the case that the instruction is an instruction executed by the mobile device 30 , the Bluetooth communication module 103 sends the relevant instruction to the mobile device 30 . The mobile device 30 receives the instruction and performs corresponding operations according to the instruction, wherein the first preset gesture is different from the second preset gesture.

Through the above solution, the probability that the radar device 101 is mistakenly triggered by the hand 20 to perform gesture recognition can be effectively reduced. Specifically, gesture recognition can be triggered only when the position of the hand 20 is within the first preset position range, which can effectively exclude unintentional actions of the user outside the first preset position range; when the gesture is in the first preset position range It is only possible to trigger gesture recognition when a gesture is set, which can effectively exclude the user's unintentional gesture actions of the first preset gesture; when the hand stays at its position and the gesture keeps the first preset gesture for the duration of the preset gesture. Gesture recognition can only be triggered within the set duration range, which can exclude false triggering of gestures whose duration is outside the preset duration range, as well as gestures whose hands stay at their position for a duration outside the preset duration range. For example, the user inadvertently places the hand 20 next to the headset and maintains a certain operation gesture for a long time (that is, longer than the second preset time period), or inadvertently swipes the hand 20 in front of the radar device 101 of the Bluetooth headset 10 ( That is, the duration of the hand staying at the position is shorter than the first preset duration).

In order to realize more functional operations, a larger number of second preset gestures need to be set, and by setting the number of first preset gestures far smaller than the number of second preset gestures, it is possible to further reduce the risk of erroneously triggering the radar device 101 to perform gesture recognition. probability. In some embodiments, the number of the first preset gesture is one and only one, so as to minimize the probability of false triggering of the radar device 101 .

Before starting to perform gesture recognition, gesture recognition training can be performed on the Bluetooth headset 10 to improve the accuracy of the gesture recognition of the Bluetooth headset 10 . For example, after the mobile device 30 establishes the Bluetooth communication with the Bluetooth headset 10, select the gesture recognition training interface on the interface of the mobile device 30, and select the preset gesture "extend the palm and put the five fingers together", the mobile device 30 uses the preset gesture "" "Open palm and close five fingers" is sent to the Bluetooth headset 10, and then the user makes the corresponding gesture "open palm and close five fingers" to allow the Bluetooth headset 10 to perform recognition training until the Bluetooth headset 10 can accurately recognize the gesture.

FIG. 3 is a schematic diagram of the application of the Bluetooth headset of the present invention. As shown in FIG. 3 , the above-mentioned first preset gesture can be extending the palm and putting the five fingers together; the first preset position range can be: in the electromagnetic wave emission direction of the radar device 101 Within the range of the set distance (X1) to the radar device 101, for example, between 5cm-15cm; the above-mentioned preset duration range can be set according to specific applications, for example, between 1-5 seconds, more preferably between 1-3 wait between seconds.

In some embodiments, after the Bluetooth headset 10 enters the gesture operation state, after determining that the second gesture recognized by the radar device 101 is the second preset gesture, it is determined whether the position of the second gesture is in the first The second gesture is parsed into an instruction corresponding to the second preset gesture only if the second preset position range is within the two preset position ranges. After the Bluetooth headset 10 enters the gesture operation state, the position range of the gesture recognized by the radar device 101 can be changed to the second preset position range, that is, the range from the electromagnetic wave emission direction of the radar device 101 to the set distance X2 of the radar device 101, The second preset position range includes and is larger than the above-mentioned first preset position, so that the user can perform gesture operations more freely and comfortably. For example, after entering the gesture operation state, the radar device 101 can recognize the gesture at a distance of 0-30 cm, and the first preset position range for triggering whether to enter the gesture operation state is 5-15 cm.

The second preset gesture includes a plurality of gestures, and each gesture corresponds to a corresponding instruction, such as controlling the volume of the Bluetooth headset, prompting to enter the volume control state, switching the playing song to the next song, prompting to enter the song switching state, and the like.

4 is a schematic diagram of an embodiment of the gesture corresponding to the volume control instruction in the second preset gesture, keeping the palm open, the thumb open, and the remaining four fingers close together, the corresponding instruction is: the earphone processor 102 sends the prompt audio data to The electro-acoustic transducer 105, for example, "enters the volume control state", in this way, the electro-acoustic transducer 105 converts the audio data into a prompt sound to prompt the user. Keep the palm open and the thumb open, and the other four fingers close together, the palm is moved away from the Bluetooth headset 10 and the corresponding command is: control volume increase; in a preferred embodiment, when the thumbs are combined, the corresponding command is: headset The processor 102 sends the audio data of "volume adjustment end" to the electro-acoustic transducer 105, so that the electro-acoustic transducer 105 converts the audio data into a prompt tone to prompt the user. Keeping the palm open, the thumb open, and the other four fingers close together, the palm moves closer to the Bluetooth headset 10, and the corresponding command is: control the volume to decrease.

5 is a schematic diagram of another embodiment of the corresponding volume control gesture in the second preset gesture, keeping the palm open and the thumb open, the remaining four fingers together and the palm facing the Bluetooth headset, the corresponding command is: the headset processor 102 sends Prompt audio data to the electro-acoustic transducer 105, eg "enter volume control state". Keep the palm open and the thumb open, the other four fingers together and the palm facing the Bluetooth headset, the palm slowly rotates in the direction of the Bluetooth headset 10, the corresponding command is: control volume increase. Keeping the palm open, the thumb open, and the remaining four fingers together, the palm is slowly rotated away from the Bluetooth headset 10, and the corresponding command is: control volume down.

6 is a schematic diagram of an embodiment of the gesture corresponding to the song switching instruction in the second preset gesture, keeping the palm open and the five fingers open, the corresponding instruction is: the earphone processor 102 sends the audio data prompting "entering the song switching state" to the The electro-acoustic transducer 105, in this way, the electro-acoustic transducer 105 converts the audio data into a prompt tone to prompt the user. Keeping the palm open and the five fingers open, quickly rotate between 30°-50° in the direction of the Bluetooth headset 10, and then quickly rotate back to the original position (for example, within the range of plus or minus 5° from the original position), the The corresponding command is: switch the playing song to the next one. Keep the palm open and the five fingers open, quickly rotate between 30°-50° in the direction away from the Bluetooth headset 10, and then quickly rotate back to the initial position (within a position range of plus or minus 5° from the initial position). The corresponding command is: switch the playing song to the previous one. When the thumbs are merged, the corresponding instruction is: the earphone processor 102 sends the audio data prompting "song switching end" to the electro-acoustic transducer 105, so that the electro-acoustic transducer 105 converts the audio data into a prompt tone to prompt the user.

7 is a schematic diagram of a more detailed embodiment of the Bluetooth headset of the present invention, wherein the radar device 101 includes a radar processor 1011 (eg, a radar processing chip), a radar circuit 1012 , a transmitting antenna 1013 and a receiving antenna 1014 . The radar processor 1011 transmits the antenna 1013 to transmit directional electromagnetic waves; when the electromagnetic wave encounters the user's hand 20, it is reflected to the receiving antenna 1014 and received, and the electromagnetic wave is processed by the radar circuit 1012 and then outputs information corresponding to the gesture to be processed by the radar The controller 1012, the radar processor 1012 can process the information to calculate the corresponding gesture.

8 is a schematic diagram of data interaction in the Bluetooth system of the present invention. After the mobile device 30 establishes Bluetooth communication with the Bluetooth headset 10, the mobile device 30 sends data packets (such as data packet 1, data packet 2, etc.) to the Bluetooth headset 10 through the Bluetooth communication module 103. , after receiving the data packet, the Bluetooth headset 10 returns an acknowledgment packet (ACK packet) to the mobile device 30, and the ACK packet may contain the above-mentioned instructions. When the mobile device 30 receives the ACK packet and parses the instruction, it performs corresponding operations, for example, after receiving the instruction to switch songs, performs the corresponding operations, and then sends new data to the Bluetooth headset 10 .

The present invention also provides the above-mentioned method for gesture recognition of the Bluetooth headset, comprising the following steps:

S10, the radar device 101 detects the gesture of the hand 20 and the position of the hand 20 relative to the radar device 101;

S11. The earphone processor 102 is configured to determine whether the first gesture detected by the radar device 101 is the first preset gesture, whether the position of the hand is within the range of the first preset position, and the duration of the hand staying at its position and the sum of the Whether the duration of the hand holding the first preset gesture is greater than the first preset duration and less than the second preset duration, if both are yes, continue to determine whether the second gesture detected by the radar device 101 is the second preset duration Gesture, if it is a second preset gesture, parse the second gesture into an instruction corresponding to the second preset gesture; wherein the first preset gesture is different from the second preset gesture.

The present invention also provides a method for gesture recognition of the above-mentioned Bluetooth system, comprising the following steps:

S20, the radar device 101 detects the gesture of the hand 20 and the position of the hand 20 relative to the radar device 101; the earphone processor 102 is used to determine whether the first gesture detected by the radar device 101 is the first preset gesture and the position of the hand Whether it is within the range of the first preset position, and the duration of the hand staying at its position and the duration of the hand holding the first preset gesture are greater than the first preset duration and less than the second preset duration, if both, Then continue to judge whether the second gesture detected by the radar device 101 is the second preset gesture, and if it is the second preset gesture, parse the second gesture into an instruction corresponding to the second preset gesture; A preset gesture is different from the second preset gesture. The Bluetooth communication module 103 sends the instruction to the mobile device 30;

S21. The mobile device 30 receives the instruction, and performs a corresponding operation according to the instruction.

Those skilled in the art can understand that, under the premise of no conflict, the above preferred solutions can be freely combined and superimposed.

It should be understood that the above-mentioned embodiments are only exemplary rather than restrictive, and those skilled in the art can make various obvious or equivalent to the above-mentioned details without departing from the basic principles of the present invention. Modifications or substitutions will be included within the scope of the claims of the present invention.

Claims (14)

1. a kind of bluetooth earphone, comprise radar device and earphone processor, it is characterized in that: the radar device for detecting hand gestures and the position of the hand relative to the radar device; The earphone processor is configured to determine whether the first gesture detected by the radar device is a first preset gesture, whether the position of the hand is within the range of the first preset position, and the hand stays at its position whether the duration of the hand holding the first preset gesture is greater than the first preset duration and less than the second preset duration, and if both are yes, continue to judge the second preset duration detected by the radar device. Whether the gesture is a second preset gesture, and if it is a second preset gesture, parse the second gesture into an instruction corresponding to the second preset gesture; Wherein, the first preset gesture is different from the second preset gesture. 2. bluetooth earphone as claimed in claim 1 is characterized in that: The earphone processor is further configured to determine whether the position of the second gesture is within the range of the second preset position after determining that the second gesture is the second preset gesture, and if so, only the The second gesture is parsed as an instruction corresponding to the second preset gesture; wherein the second preset position range includes and is greater than the first preset position range. 3. Bluetooth headset as claimed in claim 1, is characterized in that: The Bluetooth headset further includes an electro-acoustic transducer, and the headset processor is further configured to issue a voice prompt corresponding to the instruction through the electro-acoustic transducer. 4. bluetooth earphone as claimed in claim 1 is characterized in that: The number of the first preset gestures is smaller than the number of the second preset gestures. 5. bluetooth earphone as claimed in claim 4 is characterized in that: The number of the first preset gesture is one. 6. The bluetooth headset of claim 4, wherein: The first preset gesture is more complex than the second preset gesture. 7. The Bluetooth headset of claim 1, wherein the second preset gesture comprises: The palm is outstretched and the thumb is outstretched, and the remaining four fingers are together; or, Keeping the palm open and the thumb open, and the remaining four fingers together, translate the palm away from or close to the Bluetooth headset; or, Keeping the palm open and the thumb open and the remaining four fingers together, the palm is rotated in the set direction; or, Keep palms open and fingers open; or, Keeping the palm open and the fingers open, rotate the palm in the set direction and then rotate back to near the initial position. 8. A bluetooth system comprising a bluetooth headset and a mobile device, the bluetooth headset comprising a radar device, a headset processor and a bluetooth communication module, characterized in that: The radar device is used to detect hand gestures and the position of the hand relative to the radar device; the earphone processor is used to determine whether the first gesture detected by the radar device is a first preset gesture and whether the position is Within the range of the first preset position, and whether the duration of the hand staying at its position and the duration of the hand holding the first preset gesture are greater than the first preset duration and less than the second preset duration , if both are yes, continue to judge whether the second gesture detected by the radar device is the second preset gesture, if it is the second preset gesture, then parse the second gesture as the same as the first gesture Two instructions corresponding to preset gestures; the Bluetooth communication module is used to send the instructions to the mobile device; The mobile device is configured to receive the instruction and perform corresponding operations according to the instruction. 9. The bluetooth system according to claim 1-8, wherein: The earphone processor is further configured to determine whether the position of the second gesture is within the range of the second preset position after determining that the second gesture is the second preset gesture, and if so, only the The second gesture is parsed as an instruction corresponding to the second preset gesture; wherein the second preset position range includes and is greater than the first preset position range. 10. The bluetooth system according to claim 1-9, wherein: The Bluetooth headset further includes an electro-acoustic transducer, and the headset processor is further configured to issue a voice prompt corresponding to the instruction through the electro-acoustic transducer. 11. A method for gesture recognition of a bluetooth headset, wherein the bluetooth headset comprises a radar device and a headset processor, wherein the method comprises the following steps: The earphone processor determines whether the first gesture detected by the radar device is a first preset gesture, whether the position of the hand is within the range of the first preset position, and the hand stays at its position. Whether the duration and the duration of the hand holding the first preset gesture are greater than the first preset duration and less than the second preset duration, if both are, continue to judge the second hand detected by the radar device subsequently whether the gesture is a second preset gesture, and if it is a second preset gesture, parse the second gesture into an instruction corresponding to the second preset gesture; Wherein, the first preset gesture is different from the second preset gesture. 12. The method for Bluetooth headset gesture recognition as claimed in claim 11, wherein: The earphone processor also judges whether the position of the second gesture is within the second preset position range after judging that the second gesture is the second preset gesture, and if so, the second gesture is The gesture is parsed into an instruction corresponding to the second preset gesture; wherein the second preset position range includes and is greater than the first preset position range. 13. The method for gesture recognition of a Bluetooth headset according to claim 11, wherein the Bluetooth headset further comprises an electro-acoustic transducer, wherein the method further comprises the following steps: The earphone processor is further configured to issue a voice prompt corresponding to the instruction through the electro-acoustic transducer. 14. A method for gesture recognition in a Bluetooth system, wherein the Bluetooth system includes a Bluetooth headset and a mobile device, and the Bluetooth headset includes a radar device, a headset processor and a Bluetooth communication module, wherein the method includes the following: step: the radar device detects hand gestures and the position of the hand relative to the radar device; The earphone processor determines whether the first gesture detected by the radar device is a first preset gesture, whether the position of the hand is within the range of the first preset position, and the hand stays at its position. Whether the duration and the duration of the hand holding the first preset gesture are greater than the first preset duration and less than the second preset duration, if both are, continue to judge the second hand detected by the radar device subsequently Whether the gesture is a second preset gesture, if it is a second preset gesture, parse the second gesture into an instruction corresponding to the second preset gesture; wherein the first preset gesture and the second preset gesture Different preset gestures; The bluetooth communication module sends the instruction to the mobile device; The mobile device receives the instruction and performs corresponding operations according to the instruction.

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