Gesture recognition method and device, mobile terminal, and computer-readable storage medium

Abstract

The present disclosure relates to a gesture recognition method and device, a mobile terminal, and a computer-readable storage medium. The terminal includes: a UWB chip is used to output a first preset number of UWB pulse signals within a signal period; a switching module is used to control the antenna module to switch to a target antenna, and the target antenna includes a first target antenna for radiating the UWB pulse signal into space and a second target antenna for receiving an echo signal; the UWB chip is also used to generate a frame of detection data based on the echo signal of the second preset number of signal periods; the processor is used to recognize gestures based on at least one frame of detection data. In this embodiment, the area of ​​the region receiving the echo signal can be increased, that is, the antenna aperture of the mobile terminal is increased.

Description

Technical Field

[0001] The present disclosure relates to the field of antenna technology, and in particular to a gesture recognition method and device, a mobile terminal, and a computer-readable storage medium. Background Art

[0002] With the widespread use of mobile terminals such as smart phones, their functions include more and more functions, such as gesture recognition. In this way, the mobile terminal can achieve effects such as taking pictures or unlocking through the gesture recognition function.

[0003] In the related technology, gesture recognition methods can be divided into three types: gesture recognition based on wearable devices, gesture recognition based on computer vision, and gesture recognition based on radar. Among them, gesture recognition based on wearable devices refers to the use of sensors to obtain gesture information, but wearable devices need to be worn in contact and cannot be integrated into mobile terminals, which is inconvenient to use; gesture recognition based on computer vision refers to the use of optical cameras to collect images, but it takes up a lot of computing resources and is easily affected by light; gesture recognition based on radar refers to the use of frequency modulated continuous wave (FMCW) radar to obtain point cloud data to achieve gesture recognition, but the radar is large in size and difficult to integrate into mobile terminals, and requires continuous transmission of frequency modulated continuous waves, which consumes a lot of power and is also not conducive to integration into mobile terminals.

[0004] In the process of implementing this solution, the inventor discovered that existing mobile terminals are beginning to be equipped with UWB (Ultra WideBand, ultra-wideband communication) chips, which transmit microwave signals in a specific direction, and then use microwave signals to achieve short-distance communication or positioning between two devices. However, considering that gesture recognition requires higher resolution and a larger antenna aperture, this is in conflict with the small space and less computing resources of mobile terminals, resulting in the inability to apply UWB chips to gesture recognition. The antenna aperture refers to the area around the antenna, also called the capture area, which is used to capture the echo signal of the antenna signal; under the same other conditions, the larger the area of ​​the antenna aperture, the stronger the ability to capture the echo signal. Summary of the invention

[0005] The present disclosure provides a gesture recognition method and device, a mobile terminal, and a computer-readable storage medium to address the deficiencies of related technologies.

[0006] According to a first aspect of an embodiment of the present disclosure, a mobile terminal is provided, comprising a UWB chip, an antenna module, a switching module and a processor; the UWB chip is connected to the switching module and the processor respectively, the switching module is connected to the antenna module; the antenna module comprises a plurality of antennas;

[0007] The UWB chip is used to output a first preset number of UWB pulse signals within a signal period;

[0008] The switching module is used to control the antenna module to switch to the target antenna, and the target antenna includes a first target antenna for radiating the UWB pulse signal into space and / or a second target antenna for receiving an echo signal; the echo signal refers to a signal returned after the UWB pulse signal encounters a target object in the space;

[0009] The UWB chip is also used to generate a frame of detection data based on the echo signal of a second preset number of signal cycles;

[0010] The processor is used to recognize a gesture of a target object based on at least one frame of detection data.

[0011] Optionally, the target antenna comprises a time division multiplexed antenna.

[0012] Optionally, the antenna module includes a first antenna, a second antenna, a third antenna, a fourth antenna and a fifth antenna; the first antenna, the second antenna and the fourth antenna are sequentially arranged in a first direction; the second antenna, the fifth antenna and the third antenna are sequentially arranged in a second direction; the first direction and the second direction are perpendicular to each other;

[0013] The distance between the first antenna and the second antenna is one wavelength; the distance between the second antenna and the fourth antenna is half a wavelength; the distance between the second antenna and the fifth antenna is half a wavelength; and the distance between the third antenna and the fifth antenna is half a wavelength.

[0014] Optionally, the switching module includes a first switching switch, a second switching switch and a third switching switch; control ends of the first switching switch, the second switching switch and the third switching switch are used to receive the first switching control signal and the second switching control signal;

[0015] A first end of the first switch is connected to the UWB chip, a second end of the first switch is connected to the first antenna, and a third end of the first switch is connected to a first end of the second switch;

[0016] The second end of the second switch is connected to the UWB chip, the third end of the second switch is connected to the second antenna, and the third end of the second switch is connected to the third antenna;

[0017] A first end of the third switch is connected to the UWB chip, a second end of the third switch is connected to the fourth antenna, and a third end of the third switch is connected to the fifth antenna.

[0018] Optionally, the first switch and the third switch are single-pole double-throw switches, and the second switch is a double-pole double-throw switch.

[0019] Optionally, the switching module is used to control the antenna module to switch to the target antenna, including:

[0020] Sending a first switching signal to the antenna module to switch the antenna module to a first target antenna, where the first target antenna is used to radiate the UWB pulse signal into space;

[0021] A second switching signal is sent to the antenna module to switch the antenna module to a second target antenna, where the second target antenna is used to receive an echo signal.

[0022] Optionally, the switching module is used to control the antenna module to switch to a corresponding target antenna according to the timing of each UWB pulse signal.

[0023] Optionally, the first preset number is 6, and the switching module is used to control the antenna module to switch to the corresponding target antenna according to the timing of each UWB pulse signal, including:

[0024] Controlling the antenna module to switch to a first antenna, where the first antenna is used to radiate a first UWB pulse signal into space;

[0025] Controlling the antenna module to switch to the second antenna and the fourth antenna, wherein the second antenna and the fourth antenna are used to receive the echo signal;

[0026] Controlling the antenna module to switch to the first antenna, where the first antenna is used to radiate the second UWB pulse signal into space;

[0027] Controlling the antenna module to switch to a third antenna and a fifth antenna, wherein the third antenna and the fifth antenna are used to receive an echo signal;

[0028] Controlling the antenna module to switch to a second antenna, where the second antenna is used to radiate a third UWB pulse signal into space;

[0029] Controlling the antenna module to switch to the second antenna and the fourth antenna, where the second antenna and the fourth antenna are used to receive echo signals;

[0030] Controlling the antenna module to switch to a second antenna, where the second antenna is used to radiate a fourth UWB pulse signal into space;

[0031] Controlling the antenna module to switch to the third antenna and the fifth antenna, wherein the third antenna and the fifth antenna are used to receive echo signals;

[0032] Controlling the antenna module to switch to a third antenna, wherein the third antenna is used to radiate a fifth UWB pulse signal into space;

[0033] Controlling the antenna module to switch to the second antenna and the fourth antenna, where the second antenna and the fourth antenna are used to receive echo signals;

[0034] Controlling the antenna module to switch to a third antenna, wherein the third antenna is used to radiate a sixth UWB pulse signal into space;

[0035] The antenna module is controlled to switch to the third antenna and the fifth antenna, and the third antenna and the fifth antenna are used to receive echo signals.

[0036] Optionally, the first target antenna is one of the first antenna, the second antenna and the third antenna; and the second target antenna is a group of the second antenna and the fourth antenna and the third antenna and the fifth antenna.

[0037] Optionally, it also includes a filter module; the filter module is connected to the UWB chip and the switching module respectively; the filter module is used to filter out noise signals in the echo signal.

[0038] According to a second aspect of an embodiment of the present disclosure, a gesture recognition method is provided, which is applicable to a mobile terminal, and the method includes:

[0039] Outputting a first preset number of UWB pulse signals within a signal period;

[0040] Controlling the antenna module to switch to the target antenna, the target antenna comprising a first target antenna for radiating the UWB pulse signal into space and / or a second target antenna for receiving an echo signal; the echo signal refers to a signal returned after the UWB pulse signal encounters a target object in the space;

[0041] Generate a frame of detection data based on the echo signal of a second preset number of signal cycles;

[0042] A gesture of the target object is recognized based on at least one frame of detection data.

[0043] Optionally, the target antenna comprises a time division multiplexed antenna.

[0044] Optionally, controlling the antenna module to switch to the target antenna includes:

[0045] Sending a first switching signal to the antenna module to switch the antenna module to a first target antenna, where the first target antenna is used to radiate the UWB pulse signal into space;

[0046] A second switching signal is sent to the antenna module to switch the antenna module to a second target antenna, where the second target antenna is used to receive an echo signal.

[0047] Optionally, the first target antenna is one of the first antenna, the second antenna and the third antenna; and the second target antenna is a group of the second antenna and the fourth antenna and the third antenna and the fifth antenna.

[0048] Optionally, the first preset number is 6, and controlling the antenna module to switch to the target antenna includes:

[0049] Controlling the antenna module to switch to a first antenna, where the first antenna is used to radiate a first UWB pulse signal into space;

[0050] Controlling the antenna module to switch to the second antenna and the fourth antenna, wherein the second antenna and the fourth antenna are used to receive the echo signal;

[0051] Controlling the antenna module to switch to the first antenna, where the first antenna is used to radiate the second UWB pulse signal into space;

[0052] Controlling the antenna module to switch to a third antenna and a fifth antenna, wherein the third antenna and the fifth antenna are used to receive an echo signal;

[0053] Controlling the antenna module to switch to a second antenna, where the second antenna is used to radiate a third UWB pulse signal into space;

[0054] Controlling the antenna module to switch to the second antenna and the fourth antenna, where the second antenna and the fourth antenna are used to receive echo signals;

[0055] Controlling the antenna module to switch to a second antenna, where the second antenna is used to radiate a fourth UWB pulse signal into space;

[0056] Controlling the antenna module to switch to the third antenna and the fifth antenna, wherein the third antenna and the fifth antenna are used to receive echo signals;

[0057] Controlling the antenna module to switch to a third antenna, wherein the third antenna is used to radiate a fifth UWB pulse signal into space;

[0058] Controlling the antenna module to switch to the second antenna and the fourth antenna, where the second antenna and the fourth antenna are used to receive echo signals;

[0059] Controlling the antenna module to switch to a third antenna, wherein the third antenna is used to radiate a sixth UWB pulse signal into space;

[0060] The antenna module is controlled to switch to the third antenna and the fifth antenna, and the third antenna and the fifth antenna are used to receive echo signals.

[0061] Optionally, the signal period is positively correlated with the time taken by the UWB chip to generate a frame of detection data.

[0062] According to a third aspect of an embodiment of the present disclosure, a gesture recognition device is provided, which is applicable to a mobile terminal, and the device includes:

[0063] A pulse signal output module, used to output a first preset number of UWB pulse signals within a signal period;

[0064] An echo signal receiving module, used for controlling the antenna module to switch the target antenna, wherein the target antenna includes a first target antenna for radiating the UWB pulse signal into space and a second target antenna for receiving an echo signal; the echo signal refers to a signal returned after the UWB pulse signal encounters a target object in the space;

[0065] A detection data output module, used to generate a frame of detection data based on the echo signal of a second preset number of signal cycles;

[0066] The target gesture recognition module is used to recognize the gesture of the target object based on at least one frame of detection data.

[0067] According to a fourth aspect of an embodiment of the present disclosure, there is provided a mobile terminal, including:

[0068] processor;

[0069] a memory for storing a computer program executable by the processor;

[0070] The processor is configured to execute the computer program in the memory to implement any of the methods described above.

[0071] According to a fifth aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, and when an executable computer program in the storage medium is executed by a processor, any of the methods described above can be implemented.

[0072] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0073] It can be seen from the above embodiments that the UWB pulse signal in the solution provided by the embodiments of the present disclosure can be radiated into space by the first target antenna respectively. Since the first target antenna can radiate the UWB pulse signal at different positions, it is equivalent to moving the same antenna to different radiation positions, which is also equivalent to moving the receiving position of the second target antenna. Thereby, the area of ​​the region for receiving the echo signal can be increased, that is, the antenna aperture of the mobile terminal can be increased, which is beneficial to improving the user experience of the mobile terminal.

[0074] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0076] Figure 1 It is a block diagram of a mobile terminal according to an exemplary embodiment.

[0077] Figure 2 It is a schematic diagram showing an antenna arrangement according to an exemplary embodiment.

[0078] Figure 3 is a schematic diagram showing an arrangement of receiving antennas according to an exemplary embodiment.

[0079] Figure 4 The figure is a flow chart of a gesture recognition method according to an exemplary embodiment.

[0080] Figure 5 The figure is a block diagram of a gesture recognition device according to an exemplary embodiment.

[0081] Figure 6 It is a block diagram of a mobile terminal according to an exemplary embodiment. DETAILED DESCRIPTION

[0082] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described below by way of example do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.

[0083] In order to solve the above technical problems, the present disclosure provides a mobile terminal, such as a smart phone, a tablet computer, etc. Figure 1 FIG. 1 is a block diagram of a mobile terminal according to an exemplary embodiment. Figure 1 Only components related to this embodiment are shown. Figure 1 A mobile terminal includes a processor, a UWB chip, an antenna module and a switching module; the UWB chip is connected to the switching module and the processor respectively, and the switching module is connected to the antenna module. The antenna module includes multiple antennas. Among them,

[0084] The UWB chip is used to output a first preset number of UWB pulse signals within a signal period;

[0085] The switching module is used to control the antenna module to switch to the target antenna, which includes a first target antenna for radiating the UWB pulse signal into space and / or a second target antenna for receiving an echo signal; the echo signal refers to a signal returned after the UWB pulse signal encounters a target object in space;

[0086] The UWB chip is also used to generate a frame of detection data based on the echo signal of a second preset number of signal cycles;

[0087] The processor is used to recognize a target gesture based on at least one frame of detection data.

[0088] In this way, in the solution provided by the embodiment of the present disclosure, the UWB pulse signal can be radiated into space by the first target antenna. Since the first target antenna can radiate the pulse signal at different positions, it is equivalent to moving the same antenna to different radiation positions, which is also equivalent to moving the receiving position of the second target antenna. This can increase the area of ​​the echo signal received, that is, the antenna aperture of the mobile terminal can be increased, which is conducive to improving the experience of using the mobile terminal.

[0089] In one embodiment, considering that the space resources of the mobile terminal are limited, the antennas in the antenna module configured therein are limited. In one example, there is a time-division multiplexing antenna in the target antenna to which the antenna module switches, that is, the time-division multiplexing antenna acts as the first target antenna to radiate the UWB pulse signal at one moment in the signal cycle, and acts as the second target antenna to receive the echo signal at another moment in the signal cycle. In this way, in this embodiment, by using time-division multiplexing antennas, the number of antennas in the antenna module can be reduced, and the space occupied by the mobile terminal can be reduced.

[0090] In one embodiment, the antenna module may include a first antenna, a second antenna, a third antenna, a fourth antenna and a fifth antenna, which are Figure 1 The antenna ANT1, the antenna ANT2, the antenna ANT3, the antenna ANT4 and the antenna ANT5 are shown. Figure 2 , the first antenna, the second antenna and the fourth antenna are sequentially arranged in the first direction, such as Figure 2 The second antenna, the fifth antenna and the third antenna are sequentially arranged in the second direction, as shown in the x-axis direction; Figure 2 The y-axis direction is shown in the figure; the first direction and the second direction are perpendicular to each other. The distance between the first antenna and the second antenna is one wavelength; the distance between the second antenna and the fourth antenna is half a wavelength; the distance between the second antenna and the fifth antenna is half a wavelength; and the distance between the third antenna and the fifth antenna is half a wavelength.

[0091] It is understandable that the above wavelength refers to the wavelength of the signal radiated by the antenna module. Taking the frequency band of the antenna module as 6.5 GHz to 8.5 GHz, when the center frequency is 6.5 GHz, the above wavelength is about 4.62 cm; when the center frequency is 8 GHz, the above wavelength is about 3.75 cm. The technician can determine the wavelength according to the center frequency, that is, determine the distance between two adjacent antennas, and the corresponding scheme falls within the protection scope of the present disclosure.

[0092] It should be noted that the first direction and the second direction are set based on the plane where the five antennas in the antenna module are located. The purpose is to illustrate the setting positions of the five antennas. The correspondence between the first direction and the various directions of the mobile terminal can change according to the setting position of the antenna module. For example, when the plane where the antenna module is located is parallel to the display screen of the mobile terminal, the first direction can be parallel to the width direction of the mobile terminal, the second direction can be parallel to the height direction of the mobile terminal, or the two can be interchanged. For another example, when the plane where the antenna module is located is parallel to the side frame of the mobile terminal, the first direction can be parallel to the width direction of the side frame, the second direction can be parallel to the height direction of the side frame, or the two can be interchanged. The technicians can make adjustments according to the specific scenarios, and the corresponding schemes fall within the protection scope of this disclosure.

[0093] It should be noted that Figure 2 The antenna module shown in the figure only includes 5 antennas. As the number of antennas in the antenna module changes, the position arrangement of these antennas can be adaptively adjusted and the subsequent time-division multiplexing antennas can also change adaptively. Figure 2 The inventive concept provided by the illustrated embodiment is equally applicable, so the resulting solution still falls within the protection scope of the present disclosure.

[0094] Taking the current common UWB chip as an example, it includes 1 transmitting port and 2 receiving ports. At this time, it can only achieve one transmission and two receptions, and its resolution cannot meet the needs of gesture recognition. In order to ensure the normal operation of the five antennas, in this embodiment, some of the five antennas are time-division multiplexed. Figure 1, at this time, the switching module includes a first switching switch, a second switching switch and a third switching switch. The control ends of the first switching switch, the second switching switch and the third switching switch are used to receive the first switching control signal and the second switching control signal; the first end of the first switching switch is connected to the UWB chip, the second end of the first switching switch is connected to the first antenna, and the third end of the first switching switch is connected to the first end of the second switching switch; the second end of the second switching switch is connected to the UWB chip, the third end of the second switching switch is connected to the second antenna, and the third end of the second switching switch is connected to the third antenna; the first end of the third switching switch is connected to the UWB chip, the second end of the third switching switch is connected to the fourth antenna, and the third end of the third switching switch is connected to the fifth antenna.

[0095] In this embodiment, each switching switch includes at least one of the following: a double-throw switch, a relay, and a transistor. In one example, each switching switch is a double-throw switch. Figure 1 , the first switch is a single-pole double-throw switch, such as switch SPDT1; the second switch is a double-pole double-throw switch, such as switch DPDT; the third switch is a single-pole double-throw switch, such as switch SPDT2. The technician can select relevant devices to implement each switch according to the specific scenario, and the corresponding solution falls within the protection scope of the present disclosure. For the convenience of description, the double-throw switch is used as an example in the subsequent embodiments.

[0096] Based on the above connection relationship, it can be known that the first switching switch can control the operation of the first antenna and use the first antenna only as a transmitting antenna for transmitting UWB pulse signals. The first switching switch and the second switching switch can jointly control the operation of the second antenna and the third antenna to achieve the purpose of time division multiplexing of the second antenna and the third antenna, that is, they can be used as transmitting antennas for transmitting UWB pulse signals and as receiving antennas for receiving echo signals. The third switching switch can control the operation of the fourth antenna and the fifth antenna and use the fourth antenna and the fifth antenna as transmitting antennas for transmitting UWB pulse signals.

[0097] Based on the above connection relationship and the position relationship of the antenna, continue to refer to Figure 2 , when the first antenna, the second antenna and the third antenna are used as transmitting antennas respectively, the transmitting antenna changes 3 transmitting positions, which is equivalent to the same antenna transmitting UWB pulse signals three times at different positions, thereby improving the density of transmitting UWB pulse signals. Correspondingly, when one of the first antenna, the second antenna and the third antenna is used as a transmitting antenna, the other four antennas can be used as receiving antennas, then the position distribution of the receiving antennas can be as follows Figure 3 As shown, including:

[0098] When the first antenna is used as a transmitting antenna and the second antenna, the third antenna, the fourth antenna and the fifth antenna are used as receiving antennas, the receiving positions of the second antenna, the third antenna, the fourth antenna and the fifth antenna are 2A, 3A, 4A and 5A respectively.

[0099] When the second antenna is used as a transmitting antenna, when the switching time of the switching module is short enough and the UWB pulse signal transmitted by the first antenna is short enough, the second antenna moves a wavelength in the first direction compared to the first antenna. When the second antenna, the third antenna, the fourth antenna and the fifth antenna are used as receiving antennas, the receiving positions of the second antenna, the third antenna, the fourth antenna and the fifth antenna are 2B, 3B, 4B and 5B respectively; at this time, the second antenna performs time division multiplexing.

[0100] When the third antenna is used as a transmitting antenna, when the switching time of the switching module is short enough and the UWB pulse signal transmitted by the second antenna is short enough, the third antenna moves a wavelength in the second direction compared to the second antenna. When the second antenna, the third antenna, the fourth antenna and the fifth antenna are used as receiving antennas, the receiving positions of the second antenna, the third antenna, the fourth antenna and the fifth antenna are 2C, 3C, 4C and 5C respectively; at this time, the third antenna performs time division multiplexing.

[0101] It should be noted that Figure 3 The solid circle and the dotted circle are included in the figure, wherein the solid circle represents the actual position of the antenna, and the dotted circle represents the virtual receiving antenna expanded after the transmitting antenna changes the transmitting position. In this way, the area covered by the receiving antenna (solid circle and dotted circle) corresponding to the three transmitting antennas, the first antenna, the second antenna and the third antenna, or the area where the antenna module captures the echo signal is significantly larger than the original area, that is, the antenna aperture in the embodiment of the present disclosure is significantly larger.

[0102] It should also be noted that, since the distance between the second antenna and the third antenna in the second direction is one wavelength, the receiving antenna (i.e., the third antenna) when the second antenna is used as a transmitting antenna and the receiving antenna (i.e., the second antenna) when the third antenna is used as a transmitting antenna are at the same position, such as Figure 3 The positions of 2C and 3B are overlapped, which is equivalent to the second antenna moving upward by a wavelength to receive the echo signal. In this way, the two echo signals at the overlapped positions can be compared in this embodiment to compensate for the position offset of the target object, thereby reducing the error caused by the movement of the target object within a signal cycle.

[0103] In one embodiment, a mobile terminal further includes a filter module. The filter module is connected to the UWB chip and the switching module respectively. Figure 1, the above-mentioned filter module may include a bandpass filter BPF1, a bandpass filter BPF2 and a bandpass filter BPF3. Among them, the first end of the bandpass filter BPF1 is connected to the transmitting end (corresponding to the transmitter T) of the UWB chip, and the second end of the bandpass filter BPF1 is connected to the first end of the first switching switch. The first end of the bandpass filter BPF2 is connected to the receiving end (corresponding to the receiver RA) of the UWB chip, and the second end of the bandpass filter BPF2 is connected to the second end of the second switching switch. The first end of the bandpass filter BPF3 is connected to the receiving end (corresponding to the receiver RB) of the UWB chip, and the second end of the bandpass filter BPF3 is connected to the first end of the third switching switch. In this embodiment, by setting a filter module, the noise signal in the UWB pulse signal and the echo signal can be filtered out, and the signal-to-noise ratio can be improved.

[0104] In one embodiment, when the space resources of the mobile terminal are sufficient or the volume of the antenna is small enough, the antenna module may include multiple antennas. The multiple antennas include a first target antenna and a second target antenna. The first target antenna is only used to radiate the UWB pulse signal into space, and the second target antenna is only used to receive the echo signal. In other words, when the number of antennas in the antenna module is sufficient, the multiple antennas may include a transmitting antenna for radiating UWB pulse signals and a receiving antenna for receiving UWB pulse signals, that is, the functions of the transmitting antenna and the receiving antenna are fixed, so that when transmitting a pulse signal, it can be switched to the transmitting antenna according to the timing, set order or randomness of the UWB pulse signal, and at the same time switch to the receiving antenna corresponding to the transmitting antenna to receive the echo signal.

[0105] Taking the first preset number of 3 as an example, there are 3 first target antennas, and they are distributed in different positions; there can be 4 second target antennas, and they are distributed in different positions. In this way, after each first target antenna transmits a UWB pulse, the 4 second target antennas can receive the echo signal, thereby obtaining detection data consisting of 3*4=12 echo signals. In other words, more detection data can be obtained within the signal period to enable gesture recognition. Technicians can set the number of antennas according to specific scenarios, such as the spatial resources of the mobile terminal or the volume of the antenna, to achieve the effect of obtaining the detection data required for gesture recognition, and the corresponding scheme falls within the protection scope of this disclosure.

[0106] Combine the following Figure 1 to Figure 3The mobile terminal of the illustrated embodiment describes the process of gesture recognition when some antennas in the antenna module are time-division multiplexed. In each signal cycle, the transmitting antenna AN1 to the antenna ANT3 send a UWB pulse signal at least once, that is, the antenna module outputs a first preset number of UWB pulse signals in one signal cycle. Combined with the switching process of the switching switch, the first preset number in this example is 6. In actual applications, it can also be 9 or 12, that is, the first preset number is associated with the number of transmitting antennas, that is, it can be a multiple of 3. The receiving antenna ANT2 to the antenna ANT5 respectively receive the echo signals of the UWB pulse signals transmitted by each transmitting antenna.

[0107] Ignoring the time taken by the switch switching, the above signal period is positively correlated with the time taken by the UWB chip to generate a frame of detection data, that is, the stronger the processing capability of the UWB chip, the shorter the time it takes to generate a frame of detection data, and the smaller the signal period can be. The technician can select a suitable signal period according to the specific scenario, and the corresponding solution falls within the protection scope of the present disclosure.

[0108] As the number of echo signals received in each signal cycle increases, the gestures acquired will be more accurate, but more processing resources will be required. Technicians can choose the appropriate number according to the specific scenario. In each signal cycle, for example, the receiving antenna receives one echo signal from each transmitting antenna, including:

[0109] In phase 1, the switch SPDT1 is switched to the antenna ANT1, and the first antenna acts as a transmitting antenna to transmit the UWB pulse signal 1. The UWB chip generates the UWB pulse signal 1, and the UWB pulse signal 1 passes through the bandpass filter BPF1 to reach the switch SPDT1. The switch SPDT1 is switched to the antenna ANT1, and the UWB pulse signal 1 is radiated into space by the antenna ANT1, that is, the signal path is 11->7->1->ANT1.

[0110] In this stage, antenna ANT2 and antenna ANT4 are used as receiving antennas, that is, ANT2 and antenna ANT4 constitute the target antenna combination. The echo signal received by antenna ANT2 reaches the bandpass filter BPF2 through the switching switch DPDT. After filtering by the bandpass filter BPF2, the echo signal enters the UWB chip. At this time, the signal path is ANT2->3->9->12. The echo signal on antenna ANT4 reaches the bandpass filter BPF3 through the switching SPDT2. After filtering by the bandpass filter BPF3, the echo signal enters the UWB chip. At this time, the signal path is ANT4->5->10->13.

[0111] In phase 2, the switch SPDT1 is switched to the antenna ANT1, and the first antenna is used as a transmitting antenna to transmit the UWB pulse signal 2. The UWB chip generates the UWB pulse signal 2, and the UWB pulse signal 2 passes through the bandpass filter BPF1 to reach the switch SPDT1. The switch SPDT1 is switched to the antenna ANT1, and the UWB pulse signal 1 is radiated into space by the antenna ANT1, that is, the signal path is 11->7->1->ANT1.

[0112] In this stage, antenna ANT3 and antenna ANT5 are used as receiving antennas, that is, the switch DPDT is switched to antenna ANT3 and the switch SPDT2 is switched to antenna ANT5, and ANT3 and antenna ANT5 constitute the target antenna combination. The echo signal received by antenna ANT3 reaches the bandpass filter BPF2 through the switching switch DPDT. After filtering by the bandpass filter BPF2, the echo signal enters the UWB chip. At this time, the signal path is ANT3->4->9->12. The echo signal on antenna ANT5 reaches the bandpass filter BPF3 through the switching SPDT2. After filtering by the bandpass filter BPF3, the echo signal enters the UWB chip. At this time, the signal path is ANT5->6->10->13.

[0113] In stage 3, the switch SPDT1 and the switch DPDT are switched to the antenna ANT2, that is, the second antenna is used as the transmitting antenna to transmit the UWB pulse signal 3. The UWB chip generates the UWB pulse signal 3, and the UWB pulse signal 3 passes through the bandpass filter BPF1 to reach the switch SPDT1 and the switch DPDT. The UWB pulse signal 3 is radiated into space by the antenna ANT2, that is, the signal path is 11->7->2->8->3->ANT2.

[0114] In this stage, antenna ANT2 and antenna ANT4 are used as receiving antennas, that is, ANT2 and antenna ANT4 constitute the target antenna combination. The echo signal received by antenna ANT2 reaches the bandpass filter BPF2 through the switching switch DPDT. After filtering by the bandpass filter BPF2, the echo signal enters the UWB chip. At this time, the signal path is ANT2->3->9->12. The echo signal on antenna ANT4 reaches the bandpass filter BPF3 through the switching SPDT2. After filtering by the bandpass filter BPF3, the echo signal enters the UWB chip. At this time, the signal path is ANT4->5->10->13.

[0115] In phase 4, the switch SPDT1 and the switch DPDT are switched to the antenna ANT2, that is, the second antenna is used as the transmitting antenna to transmit the UWB pulse signal 4. The UWB chip generates the UWB pulse signal 4, and the UWB pulse signal 4 passes through the bandpass filter BPF1 to reach the switch SPDT1 and the switch DPDT. The UWB pulse signal 3 is radiated into space by the antenna ANT2, that is, the signal path is 11->7->2->ANT2.

[0116] In this stage, antenna ANT3 and antenna ANT5 are used as receiving antennas, that is, the switch DPDT is switched to antenna ANT3 and the switch SPDT2 is switched to antenna ANT5, and ANT3 and antenna ANT5 constitute the target antenna combination. The echo signal received by antenna ANT3 reaches the bandpass filter BPF2 through the switching switch DPDT. After filtering by the bandpass filter BPF2, the echo signal enters the UWB chip. At this time, the signal path is ANT3->4->9->12. The echo signal on antenna ANT5 reaches the bandpass filter BPF3 through the switching SPDT2. After filtering by the bandpass filter BPF3, the echo signal enters the UWB chip. At this time, the signal path is ANT5->6->10->13.

[0117] In stage 5, the switch SPDT1 and the switch DPDT are switched to the antenna ANT3, that is, the third antenna is used as a transmitting antenna to transmit the UWB pulse signal 5. The UWB chip generates the UWB pulse signal 5, and the UWB pulse signal 5 passes through the bandpass filter BPF1 to reach the switch SPDT1 and the switch DPDT. The UWB pulse signal 5 is radiated into space by the antenna ANT3, that is, the signal path is 11->7->2->8->4->ANT3.

[0118] In this stage, antenna ANT2 and antenna ANT4 are used as receiving antennas, that is, ANT2 and antenna ANT4 constitute the target antenna combination. The echo signal received by antenna ANT2 reaches the bandpass filter BPF2 through the switching switch DPDT. After filtering by the bandpass filter BPF2, the echo signal enters the UWB chip. At this time, the signal path is ANT2->3->9->12. The echo signal on antenna ANT4 reaches the bandpass filter BPF3 through the switching SPDT2. After filtering by the bandpass filter BPF3, the echo signal enters the UWB chip. At this time, the signal path is ANT4->5->10->13.

[0119] In stage 6, the switch SPDT1 and the switch DPDT are switched to the antenna ANT3, that is, the third antenna is used as a transmitting antenna to transmit the UWB pulse signal 6. The UWB chip generates the UWB pulse signal 6, and the UWB pulse signal 6 passes through the bandpass filter BPF1 to the switch SPDT1 and the switch DPDT. The UWB pulse signal 6 is radiated into space by the antenna ANT3, that is, the signal path is 11->7->2->8->4->ANT3.

[0120] In this stage, antenna ANT3 and antenna ANT5 are used as receiving antennas, that is, the switch DPDT is switched to antenna ANT3 and the switch SPDT2 is switched to antenna ANT5, that is, ANT3 and antenna ANT5 constitute the target antenna combination. The echo signal received by antenna ANT3 reaches the bandpass filter BPF2 through the switching switch DPDT. After filtering by the bandpass filter BPF2, the echo signal enters the UWB chip. At this time, the signal path is ANT3->4->9->12. The echo signal on antenna ANT5 reaches the bandpass filter BPF3 through the switching SPDT2. After filtering by the bandpass filter BPF3, the echo signal enters the UWB chip. At this time, the signal path is ANT5->6->10->13.

[0121] In this embodiment, an echo signal within a signal cycle can be obtained through the above-mentioned stages 1 to 6. Then, a frame of detection data is generated with the echo signal within a second preset number of signal cycles, that is, a gesture information matrix can be obtained. Afterwards, the mobile terminal can input the above-mentioned gesture information matrix into a preset gesture recognition model, which can be implemented using a pre-trained neural network, such as a BP neural network, and the gesture recognition model recognizes the gesture of the target object.

[0122] It should be noted that the larger the value of the second preset number is, the more accurate the gesture recognition result is. In one example, the value of the second preset number is 15. The technician can set the above second preset number according to the processing capability of the gesture recognition model and the time consumption of the gesture recognition function, and the corresponding solution falls within the protection scope of the present disclosure.

[0123] It should be noted that the above embodiment introduces the case where the target antenna combination can be ANT2 and ANT4, ANT3 and ANT5. In actual applications, the target antenna combination can also be ANT2 and ANT5, ANT3 and ANT4. Technicians can make choices based on specific scenarios, and the corresponding solutions fall within the protection scope of this disclosure.

[0124] exist Figure 1 to Figure 3 Based on the mobile terminal of the embodiment shown, the embodiment of the present disclosure also provides a gesture recognition method, see Figure 4, the method comprises steps 41 to 44:

[0125] In step 41, a first preset number of UWB pulse signals are output within a signal period.

[0126] In step 42, the antenna module is controlled to switch to a target antenna, wherein the target antenna includes a first target antenna for radiating the UWB pulse signal into space and / or a second target antenna for receiving an echo signal; the echo signal refers to a signal returned after the UWB pulse signal encounters a target object in the space;

[0127] In step 43, a frame of detection data is generated based on the echo signal of a second preset number of signal cycles.

[0128] In step 41 , a target gesture is identified based on at least one frame of detection data.

[0129] In the solution provided by the embodiments of the present disclosure, the UWB pulse signal can be radiated into space by the first target antenna respectively. Since the first target antenna can radiate the UWB pulse signal at different positions, it is equivalent to moving the same antenna to different radiation positions, which is also equivalent to moving the receiving position of the second target antenna. Thereby, the area of ​​the region receiving the echo signal can be increased, that is, the antenna aperture of the mobile terminal can be increased, which is beneficial to improving the user experience of the mobile terminal.

[0130] In one embodiment, optionally, the target antenna includes a time division multiplexing antenna.

[0131] Optionally, controlling the antenna module to switch to the target antenna includes:

[0132] Sending a first switching signal to the antenna module to switch the antenna module to a first target antenna, where the first target antenna is used to radiate the UWB pulse signal into space;

[0133] A second switching signal is sent to the antenna module to switch the antenna module to a second target antenna, where the second target antenna is used to receive an echo signal.

[0134] Optionally, the first target antenna is one of the first antenna, the second antenna and the third antenna; and the second target antenna is a group of the second antenna and the fourth antenna and the third antenna and the fifth antenna.

[0135] In one embodiment, the first preset number is 6, and controlling the antenna module to switch to the target antenna includes:

[0136] Controlling the antenna module to switch to a first antenna, where the first antenna is used to radiate a first UWB pulse signal into space;

[0137] Controlling the antenna module to switch to the second antenna and the fourth antenna, wherein the second antenna and the fourth antenna are used to receive the echo signal;

[0138] Controlling the antenna module to switch to the first antenna, where the first antenna is used to radiate the second UWB pulse signal into space;

[0139] Controlling the antenna module to switch to a third antenna and a fifth antenna, wherein the third antenna and the fifth antenna are used to receive an echo signal;

[0140] Controlling the antenna module to switch to a second antenna, where the second antenna is used to radiate a third UWB pulse signal into space;

[0141] Controlling the antenna module to switch to the second antenna and the fourth antenna, where the second antenna and the fourth antenna are used to receive echo signals;

[0142] Controlling the antenna module to switch to a second antenna, where the second antenna is used to radiate a fourth UWB pulse signal into space;

[0143] Controlling the antenna module to switch to the third antenna and the fifth antenna, wherein the third antenna and the fifth antenna are used to receive echo signals;

[0144] Controlling the antenna module to switch to a third antenna, wherein the third antenna is used to radiate a fifth UWB pulse signal into space;

[0145] Controlling the antenna module to switch to the second antenna and the fourth antenna, where the second antenna and the fourth antenna are used to receive echo signals;

[0146] Controlling the antenna module to switch to a third antenna, wherein the third antenna is used to radiate a sixth UWB pulse signal into space;

[0147] The antenna module is controlled to switch to the third antenna and the fifth antenna, and the third antenna and the fifth antenna are used to receive echo signals.

[0148] In one embodiment, the signal period is positively correlated with the time taken by the UWB chip to generate a frame of detection data.

[0149] It is understandable that the method provided by the embodiment of the present disclosure is similar to the above Figure 1 The working process of the mobile terminal corresponds to the working process of the mobile terminal. For specific content, please refer to the content of each embodiment of the mobile terminal, which will not be repeated here.

[0150] exist Figure 4 Based on the gesture recognition method of the embodiment shown, the present disclosure also provides a gesture recognition device, see Figure 5 , the device comprises:

[0151] A pulse signal output module 51, configured to output a first preset number of UWB pulse signals within a signal period;

[0152] The echo signal receiving module 52 is used to control the antenna module to switch the target antenna, wherein the target antenna includes a first target antenna for radiating the UWB pulse signal into space and a second target antenna for receiving an echo signal; the echo signal refers to a signal returned after the UWB pulse signal encounters a target object in the space;

[0153] A detection data output module 53, configured to generate a frame of detection data based on the echo signal of a second preset number of signal cycles;

[0154] The target gesture recognition module 54 is configured to recognize the gesture of the target object based on at least one frame of detection data.

[0155] It is understandable that the device provided by the embodiment of the present disclosure is different from the above Figure 5 The method shown corresponds to the above, and the specific content can be referred to the content of each embodiment of the method, which will not be repeated here.

[0156] Figure 6 6 is a block diagram of a mobile terminal according to an exemplary embodiment. For example, the mobile terminal 600 may be a smart phone, a computer, a digital broadcast terminal, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0157] Reference Figure 6 The mobile terminal 600 may include one or more of the following components: a processing component 602, a memory 604, a power component 606, a multimedia component 608, an audio component 610, an input / output (I / O) interface 612, a sensor component 614, a communication component 616, and an image acquisition component 618.

[0158] The processing component 602 generally controls the overall operation of the mobile terminal 600, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 602 may include one or more processors 620 to execute computer programs. In addition, the processing component 602 may include one or more modules to facilitate interaction between the processing component 602 and other components. For example, the processing component 602 may include a multimedia module to facilitate interaction between the multimedia component 608 and the processing component 602.

[0159] The memory 604 is configured to store various types of data to support operations on the mobile terminal 600. Examples of such data include computer programs for any application or method operating on the mobile terminal 600, contact data, phone book data, messages, pictures, videos, etc. The memory 604 may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0160] The power supply component 606 provides power to various components of the mobile terminal 600. The power supply component 606 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the mobile terminal 600. The power supply component 606 may include a power supply chip, and the controller may communicate with the power supply chip to control the power supply chip to turn on or off the switch device, so that the battery supplies power to the mainboard circuit or not.

[0161] The multimedia component 608 includes a screen that provides an output interface between the mobile terminal 600 and the target object. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the target object. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation.

[0162] The audio component 610 is configured to output and / or input audio signals. For example, the audio component 610 includes a microphone (MIC), and when the mobile terminal 600 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 604 or sent via the communication component 616. In some embodiments, the audio component 610 also includes a speaker for outputting audio signals.

[0163] The I / O interface 612 provides an interface between the processing component 602 and a peripheral interface module, such as a keyboard, a click wheel, a button, etc.

[0164] The sensor component 614 includes one or more sensors for providing various aspects of status assessment for the mobile terminal 600. For example, the sensor component 614 can detect the open / closed state of the mobile terminal 600, the relative positioning of components, such as the display screen and keypad of the mobile terminal 600, and the sensor component 614 can also detect the position change of the mobile terminal 600 or a component, the presence or absence of contact between the target object and the mobile terminal 600, the orientation or acceleration / deceleration of the mobile terminal 600, and the temperature change of the mobile terminal 600. In this example, the sensor component 614 may include a magnetic sensor, a gyroscope, and a magnetic field sensor, wherein the magnetic field sensor includes at least one of the following: a Hall sensor, a thin film magnetoresistive sensor, and a magnetic liquid acceleration sensor.

[0165] The communication component 616 is configured to facilitate wired or wireless communication between the mobile terminal 600 and other devices. The mobile terminal 600 can access a wireless network based on a communication standard, such as WiFi, 2G, 3G, 4G, 5G, or a combination thereof. In an exemplary embodiment, the communication component 616 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 616 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0166] In an exemplary embodiment, the mobile terminal 600 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components.

[0167] The present disclosure also provides a mobile terminal, including:

[0168] processor;

[0169] a memory for storing a computer program executable by the processor;

[0170] The processor is configured to execute the computer program in the memory to implement any of the methods described above.

[0171] The present disclosure also provides a computer-readable storage medium, which can implement any of the above methods when an executable computer program in the storage medium is executed by a processor. The readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0172] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the disclosure disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0173] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A mobile terminal, characterized in that: It includes a UWB chip, an antenna module, a switching module and a processor; the UWB chip is connected to the switching module and the processor respectively, and the switching module is connected to the antenna module; the antenna module includes multiple antennas; the multiple antennas include a first antenna, a second antenna, a third antenna, a fourth antenna and a fifth antenna; the first antenna, the second antenna and the fourth antenna are arranged in sequence in a first direction; the second antenna, the fifth antenna and the third antenna are arranged in a second direction; the first direction and the second direction are perpendicular to each other; the distance between the second antenna and the third antenna is one wavelength; the distance between the first antenna and the second antenna is one wavelength; the distance between the second antenna and the fourth antenna is half a wavelength; the distance between the second antenna and the fifth antenna is half a wavelength; the distance between the third antenna and the fifth antenna is half a wavelength; The UWB chip is used to output a first preset number of UWB pulse signals within a signal period; The switching module is used to control the antenna module to switch to the target antenna, the target antenna includes a time-division multiplexing antenna, the time-division multiplexing antenna acts as a first target antenna to radiate the UWB pulse signal into space at one moment in the signal cycle, and acts as a second target antenna to receive an echo signal at another moment in the signal cycle; the echo signal refers to a signal returned after the UWB pulse signal encounters a target object in the space; The UWB chip is also used to generate a frame of detection data based on the echo signal of a second preset number of signal cycles; The processor is used to recognize a gesture of a target object based on at least one frame of detection data.

2. The mobile terminal according to claim 1, characterized in that: The switching module includes a first switching switch, a second switching switch and a third switching switch; control ends of the first switching switch, the second switching switch and the third switching switch are used to receive a first switching control signal and a second switching control signal; A first end of the first switch is connected to the UWB chip, a second end of the first switch is connected to the first antenna, and a third end of the first switch is connected to a first end of the second switch; The second end of the second switch is connected to the UWB chip, the third end of the second switch is connected to the second antenna, and the fourth end of the second switch is connected to the third antenna; A first end of the third switch is connected to the UWB chip, a second end of the third switch is connected to the fourth antenna, and a third end of the third switch is connected to the fifth antenna.

3. The mobile terminal according to claim 2, characterized in that: The first switch and the third switch are single-pole double-throw switches, and the second switch is a double-pole double-throw switch.

4. The mobile terminal according to claim 1, characterized in that: The switching module is used to control the antenna module to switch to the target antenna, including: Sending a first switching signal to the antenna module to switch the antenna module to a first target antenna, where the first target antenna is used to radiate the UWB pulse signal into space; A second switching signal is sent to the antenna module to switch the antenna module to a second target antenna, where the second target antenna is used to receive an echo signal.

5. The mobile terminal according to any one of claims 1 to 4, characterized in that: The switching module is used to control the antenna module to switch to the corresponding target antenna according to the timing of each UWB pulse signal.

6. The mobile terminal according to claim 5, characterized in that: The first preset number is 6, and the switching module is used to control the antenna module to switch to the corresponding target antenna according to the timing of each UWB pulse signal, including: Controlling the antenna module to switch to a first antenna, where the first antenna is used to radiate a first UWB pulse signal into space; Controlling the antenna module to switch to the second antenna and the fourth antenna, wherein the second antenna and the fourth antenna are used to receive the echo signal; Controlling the antenna module to switch to the first antenna, where the first antenna is used to radiate the second UWB pulse signal into space; Controlling the antenna module to switch to a third antenna and a fifth antenna, wherein the third antenna and the fifth antenna are used to receive an echo signal; Controlling the antenna module to switch to a second antenna, where the second antenna is used to radiate a third UWB pulse signal into space; Controlling the antenna module to switch to the second antenna and the fourth antenna, where the second antenna and the fourth antenna are used to receive echo signals; Controlling the antenna module to switch to a second antenna, where the second antenna is used to radiate a fourth UWB pulse signal into space; Controlling the antenna module to switch to the third antenna and the fifth antenna, wherein the third antenna and the fifth antenna are used to receive echo signals; Controlling the antenna module to switch to a third antenna, wherein the third antenna is used to radiate a fifth UWB pulse signal into space; Controlling the antenna module to switch to the second antenna and the fourth antenna, where the second antenna and the fourth antenna are used to receive echo signals; Controlling the antenna module to switch to a third antenna, wherein the third antenna is used to radiate a sixth UWB pulse signal into space; The antenna module is controlled to switch to the third antenna and the fifth antenna, and the third antenna and the fifth antenna are used to receive echo signals.

7. The mobile terminal according to claim 1, characterized in that: The first target antenna is one of the first antenna, the second antenna and the third antenna; and the second target antenna is a group of the second antenna and the fourth antenna and the third antenna and the fifth antenna.

8. The mobile terminal according to claim 1, characterized in that: It also includes a filter module; the filter module is connected to the UWB chip and the switching module respectively; the filter module is used to filter out noise signals in the echo signal.

9. A gesture recognition method, characterized in that: Applicable to a mobile terminal, the mobile terminal comprises a UWB chip, an antenna module, a switching module and a processor; the UWB chip is connected to the switching module and the processor respectively, and the switching module is connected to the antenna module; the antenna module comprises a plurality of antennas; the plurality of antennas comprises a first antenna, a second antenna, a third antenna, a fourth antenna and a fifth antenna; the first antenna, the second antenna and the fourth antenna are sequentially arranged in a first direction; the second antenna, the fifth antenna and the third antenna are arranged in a second direction; the first direction and the second direction are perpendicular to each other; the distance between the second antenna and the third antenna is one wavelength; the distance between the first antenna and the second antenna is one wavelength; the distance between the second antenna and the fourth antenna is half a wavelength; The distance between the second antenna and the fifth antenna is half a wavelength; The distance between the third antenna and the fifth antenna is half a wavelength; the method comprises: Outputting a first preset number of UWB pulse signals within a signal period; Controlling the antenna module to switch to the target antenna, the target antenna comprising a time-division multiplexing antenna, the time-division multiplexing antenna acting as a first target antenna to radiate the UWB pulse signal into space at one time in a signal cycle, and acting as a second target antenna to receive an echo signal at another time in the signal cycle; the echo signal refers to a signal returned after the UWB pulse signal encounters a target object in the space; Generate a frame of detection data based on the echo signal of a second preset number of signal cycles; A gesture is recognized based on at least one frame of detection data.

10. The method according to claim 9, characterized in that Control the antenna module to switch to the target antenna, including: Sending a first switching signal to the antenna module to switch the antenna module to a first target antenna, where the first target antenna is used to radiate the UWB pulse signal into space; A second switching signal is sent to the antenna module to switch the antenna module to a second target antenna, where the second target antenna is used to receive an echo signal.

11. The method according to claim 10, characterized in that The first target antenna is one of the first antenna, the second antenna and the third antenna; and the second target antenna is a group of the second antenna and the fourth antenna and the third antenna and the fifth antenna.

12. The method according to claim 11, characterized in that The first preset number is 6, and controlling the antenna module to switch to the target antenna includes: Controlling the antenna module to switch to a first antenna, where the first antenna is used to radiate a first UWB pulse signal into space; Controlling the antenna module to switch to the second antenna and the fourth antenna, wherein the second antenna and the fourth antenna are used to receive the echo signal; Controlling the antenna module to switch to the first antenna, where the first antenna is used to radiate the second UWB pulse signal into space; Controlling the antenna module to switch to a third antenna and a fifth antenna, wherein the third antenna and the fifth antenna are used to receive an echo signal; Controlling the antenna module to switch to a second antenna, where the second antenna is used to radiate a third UWB pulse signal into space; Controlling the antenna module to switch to the second antenna and the fourth antenna, where the second antenna and the fourth antenna are used to receive echo signals; Controlling the antenna module to switch to a second antenna, where the second antenna is used to radiate a fourth UWB pulse signal into space; Controlling the antenna module to switch to the third antenna and the fifth antenna, wherein the third antenna and the fifth antenna are used to receive echo signals; Controlling the antenna module to switch to a third antenna, wherein the third antenna is used to radiate a fifth UWB pulse signal into space; Controlling the antenna module to switch to the second antenna and the fourth antenna, where the second antenna and the fourth antenna are used to receive echo signals; Controlling the antenna module to switch to a third antenna, wherein the third antenna is used to radiate a sixth UWB pulse signal into space; The antenna module is controlled to switch to the third antenna and the fifth antenna, and the third antenna and the fifth antenna are used to receive echo signals.

13. The method according to claim 9, characterized in that The signal period is positively correlated with the time taken by the UWB chip to generate a frame of detection data.

14. A gesture recognition device, characterized in that: Applicable to a mobile terminal, the mobile terminal comprises a UWB chip, an antenna module, a switching module and a processor; the UWB chip is connected to the switching module and the processor respectively, and the switching module is connected to the antenna module; the antenna module comprises a plurality of antennas; the plurality of antennas comprises a first antenna, a second antenna, a third antenna, a fourth antenna and a fifth antenna; the first antenna, the second antenna and the fourth antenna are sequentially arranged in a first direction; the second antenna, the fifth antenna and the third antenna are arranged in a second direction; the first direction and the second direction are perpendicular to each other; the distance between the second antenna and the third antenna is one wavelength; the distance between the first antenna and the second antenna is one wavelength; the distance between the second antenna and the fourth antenna is half a wavelength; The distance between the second antenna and the fifth antenna is half a wavelength; The distance between the third antenna and the fifth antenna is half a wavelength; the device comprises: A pulse signal output module, used to output a first preset number of UWB pulse signals within a signal period; an echo signal receiving module, used for controlling the antenna module to switch the target antenna, the target antenna comprising a time-division multiplexing antenna, the time-division multiplexing antenna acting as a first target antenna to radiate the UWB pulse signal into space at one moment in a signal cycle, and acting as a second target antenna to receive an echo signal at another moment in the signal cycle; the echo signal refers to a signal returned by the UWB pulse signal after encountering a target object in the space; A detection data output module, used to generate a frame of detection data based on the echo signal of a second preset number of signal cycles; The target gesture recognition module is used to recognize gestures based on at least one frame of detection data.

15. A mobile terminal, characterized in that: include: processor; a memory for storing a computer program executable by the processor; The processor is configured to execute the computer program in the memory to implement the method according to any one of claims 9 to 13.

16. A computer-readable storage medium, characterized in that: When the executable computer program in the storage medium is executed by a processor, the method according to any one of claims 9 to 13 can be implemented.

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