Morphological recognition method, electronic device and terminal device

Abstract

This application discloses a morphological recognition method, electronic device, and terminal device, belonging to the field of terminal technology. It includes: a substrate; a first antenna system disposed on the substrate for transmitting a first signal with a first polarization direction and a second signal with a second polarization direction to a test object; and a second antenna system disposed on the substrate, comprising a first antenna, a second antenna, and a third antenna. When the first antenna system transmits the first signal, the first antenna and the third antenna are used to receive a first reflected signal with a first polarization direction formed by reflection of the first signal by the test object; when the first antenna system transmits the second signal, the second antenna and the third antenna are used to receive a second reflected signal with a second polarization direction formed by reflection of the second signal by the test object.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a morphological recognition method, electronic device, and terminal device. Background Technology

[0002] Millimeter-wave gesture recognition works by transmitting a signal generated by a built-in millimeter-wave generator via a transmitting antenna. The signal is modulated by the user's hand movements and reflected. The reflected signal is captured by multiple receiving antennas. Different propagation times are determined for the reflected signals captured by each receiving antenna. The distance to different fingers of the user is then measured based on the propagation time. The specific position of the user's different fingers is determined based on the different distances, thereby identifying the user's specific gesture.

[0003] In some scenarios, the transmitting antenna uses a single-polarized antenna to transmit a signal in a certain polarization direction, and multiple receiving antennas are set up to receive the reflected signal after the signal is reflected by the object under test. Due to the limited internal space of the handheld terminal device, the spacing between the receiving antennas is small, and they will interfere with each other when receiving the reflected signal, resulting in poor isolation between the receiving antennas, which in turn leads to low measurement accuracy. Summary of the Invention

[0004] The purpose of this application is to provide a morphological recognition method, electronic device, and terminal device that can solve the problem of low measurement accuracy caused by poor isolation between receiving antennas.

[0005] In a first aspect, embodiments of this application provide an electronic device, which includes:

[0006] A substrate; a first antenna system disposed on the substrate for transmitting a first signal with a first polarization direction and a second signal with a second polarization direction to an object under test; a second antenna system disposed on the substrate, the second antenna system including a first antenna, a second antenna and a third antenna, wherein the third antenna is a dual-polarized antenna; when the first antenna system transmits the first signal, the first antenna and the third antenna are used to receive the first signal reflected by the object under test to form a first reflected signal with the first polarization direction; when the first antenna system transmits the second signal, the second antenna and the third antenna are used to receive the second signal reflected by the object under test to form a second reflected signal with the second polarization direction.

[0007] Secondly, embodiments of this application provide an electronic device comprising: a substrate; a first antenna system disposed on the substrate for transmitting a first signal with a first polarization direction and a second signal with a second polarization direction to a test object; a second antenna system disposed on the substrate, the second antenna system including a first antenna and a second antenna; wherein, when the first antenna system transmits the first signal, the first antenna and the first antenna system are configured to receive a first reflected signal with the first polarization direction formed by reflection of the first signal by the test object; and wherein, when the first antenna system transmits the second signal, the second antenna and the first antenna system are configured to receive a second reflected signal with the second polarization direction formed by reflection of the second signal by the test object.

[0008] Thirdly, embodiments of this application provide a morphology recognition method, which includes:

[0009] For a first polarization direction, the first antenna system is controlled to transmit a first signal toward the object under test; a first frequency is acquired in the second antenna system where the first antenna receives the first signal and it is reflected by the object under test to form a first reflected signal in the first polarization direction, and a second frequency is acquired in the third antenna system where the first antenna receives the first signal and it is reflected by the object under test to form a second reflected signal in the first polarization direction; for a second polarization direction, the first antenna system is controlled to transmit a second signal toward the object under test; a third frequency is acquired in the second antenna system where the second antenna receives the second signal and it is reflected by the object under test to form a third reflected signal in the second polarization direction, and a fourth frequency is acquired in the third antenna system where the second antenna receives the second signal and it is reflected by the object under test to form a fourth reflected signal in the second polarization direction; the relative position of the object under test is determined using the first frequency, the second frequency, the third frequency, and the fourth frequency; and the shape of the object under test is identified based on the relative position.

[0010] Fourthly, embodiments of this application provide a morphology recognition method, which includes:

[0011] For a first polarization direction, the first antenna system is controlled to transmit a first signal toward the object under test; a first frequency is acquired whereby the first antenna in the second antenna system receives the first signal and, after reflection by the object under test, forms a first reflected signal in the first polarization direction, and a second frequency is acquired whereby the first antenna system receives the first signal and, after reflection by the object under test, forms a second reflected signal in the first polarization direction; for a second polarization direction, the first antenna system is controlled to transmit a second signal toward the object under test; a third frequency is acquired whereby the second antenna in the second antenna system receives the second signal and, after reflection by the object under test, forms a third reflected signal in the second polarization direction, and a fourth frequency is acquired whereby the first antenna system receives the second signal and, after reflection by the object under test, forms a fourth reflected signal in the second polarization direction; the relative position of the object under test is determined using the first frequency, the second frequency, the third frequency, and the fourth frequency; and the shape of the object under test is identified based on the relative position.

[0012] Fifthly, embodiments of this application provide a morphology recognition device, which includes:

[0013] A first control module is used to control a first antenna system to transmit a first signal toward the object under test (DUT) in a first polarization direction; a first acquisition module is used to acquire a first frequency of the first antenna in the second antenna system receiving the first signal reflected by the DUT to form a first reflected signal in the first polarization direction, and a second frequency of the third antenna receiving the first signal reflected by the DUT to form a second reflected signal in the first polarization direction; a second control module is used to control the first antenna system to transmit a second signal toward the DUT in a second polarization direction; a second acquisition module is used to acquire a third frequency of the second antenna in the second antenna system receiving the second signal reflected by the DUT to form a third reflected signal in the second polarization direction, and a fourth frequency of the third antenna receiving the second signal reflected by the DUT to form a fourth reflected signal in the second polarization direction; a determination module is used to determine the relative position of the DUT using the first frequency, the second frequency, the third frequency, and the fourth frequency; and an identification module is used to identify the shape of the DUT based on the relative position.

[0014] Sixthly, embodiments of this application disclose a morphology recognition device, which includes:

[0015] A first control module is used to control a first antenna system to transmit a first signal toward the object under test (DUT) in a first polarization direction; a first acquisition module is used to acquire a first frequency of a first reflected signal in a first polarization direction formed by the first antenna receiving the first signal in a second antenna system after reflection by the DUT, and a second frequency of a second reflected signal in a first polarization direction formed by the first antenna system receiving the first signal in a second polarization direction formed by reflection by the DUT; a second control module is used to control the first antenna system to transmit a second signal toward the DUT in a second polarization direction; a second acquisition module is used to acquire a third frequency of a third reflected signal in a second polarization direction formed by the second antenna receiving the second signal in a second antenna system after reflection by the DUT, and a fourth frequency of a fourth reflected signal in a second polarization direction formed by the first antenna system receiving the second signal in a second polarization direction formed by reflection by the DUT; a determination module is used to determine the relative position of the DUT using the first frequency, the second frequency, the third frequency, and the fourth frequency; and an identification module is used to identify the shape of the DUT based on the relative position.

[0016] In a seventh aspect, embodiments of this application provide a terminal device, which includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor. When the program or instructions are executed by the processor, they implement the steps of the methods of the second or third aspect.

[0017] Eighthly, embodiments of this application provide a readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method as described in the second or third aspect.

[0018] Ninthly, embodiments of this application provide a chip, the chip including a processor and a communication interface, the communication interface and the processor being coupled, the processor being used to run programs or instructions to implement the methods as described in the second or third aspects.

[0019] The technical solution disclosed in the application includes: a substrate, and a first antenna system disposed on the substrate for transmitting a first signal with a first polarization direction and a second signal with a second polarization direction to a test object. The second antenna system disposed on the substrate includes a first antenna, a second antenna, and a third antenna. When the first antenna system transmits the first signal, the first antenna and the third antenna are used to receive a first reflected signal with the first polarization direction formed by reflection of the first signal from the test object. When the first antenna system transmits the second signal, the second antenna and the third antenna are used to receive a second reflected signal with the second polarization direction formed by reflection of the second signal from the test object. Therefore, by transmitting signals with two polarization directions, which are received by the first antenna, the second antenna, and the third antenna respectively, since the first signal and the second signal are in different polarization directions, and the reflected signals received by the first antenna, the second antenna, and the third antenna are also in different polarization directions, the mutual interference between the first antenna, the second antenna, and the third antenna is small, improving the isolation between the receiving antennas and thus improving the measurement accuracy. Attached Figure Description

[0020] Figure 1A and Figure 1B This illustration shows a structural schematic diagram of an electronic device provided in an embodiment of this application;

[0021] Figure 2 This illustration shows a first specific structural diagram of an electronic device provided in an embodiment of this application;

[0022] Figures 3 to 6 This diagram illustrates the working mode of a first specific structure of an electronic device provided in an embodiment of this application.

[0023] Figure 7 This illustration shows a second specific structural diagram of an electronic device provided in an embodiment of this application;

[0024] Figures 8 to 11 This diagram illustrates a working mode of a second specific structure of an electronic device provided in an embodiment of this application.

[0025] Figure 12A This diagram illustrates a first flowchart of a morphology recognition method provided in an embodiment of this application.

[0026] Figure 12B This illustration shows a second flowchart of a morphology recognition method provided in an embodiment of this application;

[0027] Figure 12C This illustration shows a third flowchart of a morphology recognition method provided in an embodiment of this application;

[0028] Figure 12D This illustration shows a fourth flowchart of a morphology recognition method provided in an embodiment of this application;

[0029] Figure 13 This illustration shows a structural diagram of a terminal device provided in an embodiment of this application;

[0030] Figure 14 This illustration shows a hardware structure diagram of an electronic device provided in an embodiment of this application;

[0031] Figure 15A This diagram illustrates a first type of module composition of a morphology recognition device provided in an embodiment of this application.

[0032] Figure 15B This diagram illustrates a second type of module composition of a morphology recognition device provided in an embodiment of this application. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0034] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0035] The electronic device provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0036] like Figure 1A The diagram shows a schematic representation of an electronic device according to an embodiment of this application. This electronic device can be a mobile terminal device, a handheld computer, a laptop computer, etc. The electronic device 10 includes: a substrate 100, and a first antenna system 101 disposed on the substrate 100. The first antenna system 101 is used to transmit a first signal with a first polarization direction and a second signal with a second polarization direction to the object under test.

[0037] Specifically, the substrate 100 is a carrier that supports the first antenna system 101 and the second antenna system 102, such as a magnetic substrate.

[0038] A second antenna system 102 is provided on the substrate 100. The second antenna system 102 includes a first antenna 1020, a second antenna 1021, and a third antenna 1022, wherein the third antenna 1022 is a dual-polarized antenna. The first antenna system 101 generates signals (a first signal and a second signal) with different polarization directions through a built-in signal generator and transmits them, which are received by the first antenna 1020 and the second antenna 1021 respectively. The signal generator can be a millimeter-wave generator, which generates millimeter-wave signals, and these millimeter-wave signals can be frequency-modulated continuous signals.

[0039] The first antenna system 101 includes, but is not limited to, a dual-polarized antenna with a first polarization direction and a second polarization direction that are orthogonal to each other. The dual-polarized antenna can be an antenna with a vertical polarization direction (second polarization direction) and a horizontal polarization direction (first polarization direction) that are orthogonal to each other, or an antenna with a positive 45° polarization direction (first polarization direction) and a negative 45° polarization direction (second polarization direction) that are orthogonal to each other, etc. Dual-polarized antennas can be classified according to their polarization method as linearly polarized antennas, circularly polarized antennas, etc. Circularly polarized antennas include, but are not limited to, left-hand circularly polarized antennas and right-hand circularly polarized antennas. According to their antenna form, they can be classified as microstrip patch antennas, dipole antennas, and helical antennas, etc.

[0040] When the first antenna system transmits a first signal in a first polarization direction, the first antenna 1020 and the third antenna 1022 are used to receive a first reflected signal in a first polarization direction formed by the first signal transmitted by the object under test. When the first antenna system 101 transmits a second signal in a second polarization direction, the second antenna 1021 and the third antenna 1022 are used to receive a second reflected signal in a second polarization direction formed by the second signal reflected by the object under test.

[0041] In one possible implementation, when the first antenna system 101 is a dual-polarized antenna and operates in simplex mode, it is only used to transmit a first signal in the first polarization direction and a second signal in the second polarization direction to the object under test.

[0042] In one possible implementation, the number of first antennas 1020 in the second antenna system 102 can be one, and the number of second antennas 1021 can also be one. When the first antenna system 101 is a dual-polarized antenna and operates in simplex mode, when it transmits a first signal in a first polarization direction to the object under test, the first antenna 1020 is used to receive the first reflected signal in the first polarization direction formed by the reflection of the first signal by the object under test. When the first antenna system 101 transmits a second signal in a second polarization direction to the object under test, the second antenna 1021 is used to receive the second reflected signal in the second polarization direction formed by the reflection of the second signal by the object under test. The first antenna 1020 is a single-polarized antenna supporting the first polarization direction, and the second antenna 1021 is a single-polarized antenna supporting the second polarization direction.

[0043] Optionally, the first antenna 1020, the second antenna 1021, and the third antenna 1022 operate at the same frequency, thereby further improving the signal isolation.

[0044] It is worth noting that the operating frequencies of the first antenna 1020, the second antenna 1021, and the third antenna 1022 can also be different.

[0045] The technical solution disclosed in this application transmits signals with two polarization directions, which are received by a first antenna and a third antenna, or a second antenna and a third antenna, respectively. Since the first signal and the second signal are in different polarization directions, the reflected signals received by the first antenna and the third antenna, or the second antenna and the third antenna, are also in different polarization directions. Therefore, the mutual influence between the first antenna and the second antenna is small, which improves the isolation between the receiving antennas and thus improves the measurement accuracy.

[0046] like Figure 1B The diagram illustrates the structure of an electronic device according to an embodiment of this application. This electronic device can be a mobile terminal device, a handheld computer, a laptop computer, etc. The electronic device 11 includes: a substrate 110; a first antenna system 111 disposed on the substrate 110 for transmitting a first signal with a first polarization direction and a second signal with a second polarization direction to a target object; and a second antenna system 112 disposed on the substrate 110, comprising a first antenna 1120 and a second antenna 1121.

[0047] When the first antenna system 111 is a dual-polarized antenna and operates in duplex mode, it is used to transmit a first signal in a first polarization direction and a second signal in a second polarization direction to the object under test, and to receive a first reflected signal of the first signal in a first polarization direction formed by reflection of the first signal by the object under test and a second reflected signal of the second signal in a second polarization direction formed by reflection of the second signal by the object under test.

[0048] When the first antenna system 111 transmits the first signal, the first antenna 1120 and the first antenna system 111 are used to receive the first reflected signal formed by the reflection of the first signal by the object under test to form the first polarization direction.

[0049] When the first antenna system 111 transmits the second signal, the second antenna 1121 and the first antenna system 111 are used to receive the second reflected signal formed by the second signal after being reflected by the object under test to form the second polarization direction.

[0050] The first antenna system 111 generates signals (first signal and second signal) with different polarization directions through a built-in signal generator and transmits them, which are received by the first antenna 1120 and the second antenna 1121 respectively. The signal generator can be a millimeter wave generator, which generates millimeter wave signals, which can be frequency-modulated continuous signals.

[0051] The first antenna system 111 includes, but is not limited to, a dual-polarized antenna with a first polarization direction and a second polarization direction that are orthogonal to each other. The dual-polarized antenna can be an antenna with a vertical polarization direction (second polarization direction) and a horizontal polarization direction (first polarization direction) that are orthogonal to each other, or an antenna with a positive 45° polarization direction (first polarization direction) and a negative 45° polarization direction (second polarization direction) that are orthogonal to each other, etc. Dual-polarized antennas can be classified according to their polarization method as linearly polarized antennas, circularly polarized antennas, etc. Circularly polarized antennas include, but are not limited to, left-hand circularly polarized antennas and right-hand circularly polarized antennas. According to their antenna form, they can be classified as microstrip patch antennas, dipole antennas, and helical antennas, etc.

[0052] It is worth noting that the first antenna 1120 and the second antenna 1121 have the same or similar implementation as the first antenna 1020 and the second antenna 1021 described above. The similarities can be referred to each other, and the embodiments of this application will not be repeated here.

[0053] The electronic device provided in the embodiments of this application will be further described in detail below, such as... Figure 2 The diagram shows a first specific structural schematic of an electronic device provided in an embodiment of this application.

[0054] Figure 2 The electronic device shown includes a substrate 100, a first antenna system 101, and a second antenna system, the second antenna system including a first antenna 1020, a second antenna 1021, and a third antenna 1022.

[0055] The first antenna system 101, the first antenna 1020, the second antenna 1021 and the third antenna 1022 are located on the substrate 100.

[0056] The first antenna system 101 is a dual-polarized antenna with orthogonal vertical polarization (y-direction) and horizontal polarization (x-direction), meaning it simultaneously supports two orthogonal polarization directions (x and y). The first antenna system 101 can operate in simplex mode. The first antenna 1020 only supports x-direction polarization and cannot receive reflected signals in the y-direction, which is orthogonal to the x-direction. The second antenna 1021 only supports y-direction polarization and cannot receive reflected signals in the x-direction, which is orthogonal to the y-direction. The third antenna 1022 is a dual-polarized antenna that simultaneously supports two orthogonal polarization directions (x and y).

[0057] First antenna system 101 and first antenna 1020 are spaced apart on substrate 100 along a first polarization direction (x-direction). Second antenna 1021 and third antenna 1022 are spaced apart on substrate 100 along the first polarization direction. First antenna 1020 and third antenna 1022 are spaced apart on substrate 100 along a second polarization direction (y-direction). First antenna system 101 and second antenna 1021 are spaced apart on substrate 100 along the second polarization direction. The spacing between the first antenna system 101, first antenna 1020, second antenna 1021, and third antenna 1022 can be λ / 2, where λ is the air wavelength.

[0058] When the first antenna system 101 transmits the first signal in the x direction Figure 2 The electronic device shown operates as follows.

[0059] like Figure 3 As shown, the first antenna system 101 transmits a first signal 1010 in the x-direction to the object under test 103. The first signal 1010 is reflected by the object under test to form a first reflected signal. The first antenna 1020 receives the reflected signal 1011 in the x-direction from the object under test, and the third antenna 1022 receives the reflected signal 1012 in the x-direction from the object under test. The second antenna 1021, because it only supports y-direction polarization, cannot receive the first reflected signal in the x-direction formed by the reflection from the object under test, thereby reducing the influence of the second antenna 1021 on the first antenna 1020 and the third antenna 1022.

[0060] After the first antenna 1020 and the third antenna 1022 receive the reflected signal, the distance and direction angle between the object under test 103 and the first antenna system 101, the first antenna 1020 and the third antenna 1022 are calculated based on the distance between the first antenna system 101, the first antenna 1020 and the third antenna 1022, the difference between the frequency of the first signal 1010 transmitted by the first antenna system 101 and the frequency of the reflected signal 1011 received by the first antenna 1020, and the difference between the frequency of the first signal 1010 transmitted by the first antenna system and the frequency of the reflected signal 1012 received by the third antenna 1022.

[0061] like Figure 4 As shown, taking the third antenna 1022 as an example, the distance between the object under test 103 and the third antenna 1022 is represented by L1, and the direction angle between the object under test 103 and the third antenna 1022 is represented by θ1.

[0062] When the first antenna system 101 transmits the second signal in the y direction Figure 2 The electronic device shown operates as follows.

[0063] like Figure 5 As shown, the first antenna system 101 transmits a second signal 1110 in the y-direction to the object under test 103. The second signal 1110 is reflected by the object under test to form a second reflected signal. The second antenna 1021 receives the reflected signal 1111 in the y-direction from the object under test, and the third antenna 1022 receives the reflected signal 1112 in the y-direction from the object under test. Because the first antenna 1020 only supports x-direction polarization, it cannot receive the second reflected signal in the y-direction formed by the reflection from the object under test, thereby reducing the influence of the first antenna 1020 on the second antenna 1021 and the third antenna 1022.

[0064] After the second antenna 1021 and the third antenna 1022 receive the reflected signal, the distance and azimuth angle between the object under test 103 and the first antenna system 101, the second antenna 1021 and the third antenna 1022 are calculated based on the spacing between the first antenna system 101, the second antenna 1021 and the third antenna 1022, the difference between the frequency of the second signal 1110 transmitted by the first antenna system 101 and the frequency of the reflected signal 1111 received by the second antenna 1021, and the difference between the frequency of the second signal 1110 transmitted by the first antenna system and the frequency of the reflected signal 1112 received by the third antenna 1022.

[0065] like Figure 6 As shown, taking the third antenna 1022 as an example, the distance between the object under test 103 and the third antenna 1022 is represented by L2, and the direction angle between the object under test 103 and the third antenna 1022 is represented by Φ1.

[0066] When transmitting signals in the first polarization direction and the second polarization direction, the relative position of the object under test is calculated based on the distances L1 and L2 between the object under test 103 and the first antenna system 101, the first antenna 1020, the second antenna 1021 and the third antenna 1022, as well as the directional angles Φ1 and θ1, so as to identify the shape of the object under test.

[0067] By transmitting signals with two polarization directions through the technical solutions disclosed in this application, which are received by a first antenna and a second antenna respectively, since the first signal and the second signal are in different polarization directions, the reflected signals received by the first antenna and the second antenna are also in different polarization directions. Therefore, the mutual influence between the first antenna and the second antenna is small, which improves the isolation between the receiving antennas and thus improves the measurement accuracy.

[0068] The electronic device provided in the embodiments of this application will be further described in detail below, such as... Figure 7 The diagram shows a second specific structural schematic of an electronic device provided in an embodiment of this application.

[0069] Figure 7 The electronic device shown includes a substrate 110, a first antenna system 111, and a second antenna system, wherein the second antenna system includes a first antenna 1120 and a second antenna 1121.

[0070] The first antenna system 111, the first antenna 1120, and the second antenna 1121 are located on the substrate 100.

[0071] The first antenna system 111 is a dual-polarized antenna with vertical polarization (represented by the y-direction) and horizontal polarization (represented by the x-direction) that are orthogonal to each other, meaning it simultaneously supports two orthogonal polarization directions, x and y. The first antenna system 111 can operate in full-duplex mode. The first antenna 1120 only supports x-direction polarization and cannot receive reflected signals in the y-direction, which is orthogonal to the x-direction. The second antenna 1121 only supports y-direction polarization and cannot receive reflected signals in the x-direction, which is orthogonal to the y-direction.

[0072] On substrate 110, a first antenna system 111 and a first antenna 1120 are spaced apart along a second polarization direction (y direction), and a first antenna system 111 and a second antenna 1121 are spaced apart along a first polarization direction (x direction). The spacing between the first antenna system 111, the first antenna 1120, and the second antenna 1121 can be λ / 2, where λ is the air wavelength.

[0073] like Figure 8As shown, the first antenna system 111 transmits a first signal 1030 in the x-direction to the object under test 103. The first signal 1030 is reflected by the object under test to form a first reflected signal. The first antenna 1020 receives the reflected signal 1031 in the x-direction from the object under test, and the first antenna system 101 receives the reflected signal 1032 in the x-direction from the object under test. The transmission paths of the first signal 1030 transmitted by the first antenna system 111 and the reflected signal 1032 received by the first antenna system 111 coincide, but their transmission directions are opposite. Because the second antenna 1121 only supports y-direction polarization, it cannot receive the first reflected signal in the x-direction formed by the reflection from the object under test. This reduces the influence of the second antenna 1121 on the first antenna 1120 and the first antenna system 111, improves the isolation between the first antenna 1120 and the first antenna system 111, and thus improves the measurement accuracy.

[0074] After the first antenna 1120 and the first antenna system 111 receive the reflected signal, the distance and direction angle between the object under test 103 and the first antenna system 111 and the first antenna 1120 are calculated based on the distance between the first antenna system 111 and the first antenna 1120, the difference between the frequency of the first signal 1030 transmitted by the first antenna system 111 and the frequency of the reflected signal 1031 received by the first antenna 1120, and the difference between the frequency of the first signal 1030 transmitted by the first antenna system and the frequency of the reflected signal 1032 received by the first antenna system 111.

[0075] like Figure 9 As shown, the distance between the object under test 103 and the first antenna 1120 is represented by L3, and the azimuth angle between the object under test 103 and the first antenna 1120 is represented by θ2.

[0076] like Figure 10 As shown, the first antenna system 111 transmits a second signal 1040 in the y-direction to the object under test 103. The second signal 1040 is reflected by the object under test to form a second reflected signal. The second antenna 1121 receives the reflected signal 1041 in the y-direction from the object under test, and the first antenna system 111 receives the reflected signal 1042 in the y-direction from the object under test. The transmission paths of the second signal 1040 transmitted by the first antenna system 111 and the reflected signal 1042 received by the first antenna system 111 coincide, but their transmission directions are opposite. Because the first antenna 1120 only supports x-direction polarization, it cannot receive the second reflected signal in the y-direction formed by the reflection from the object under test. This reduces the influence of the first antenna 1120 on the second antenna 1121 and the first antenna system 111, improves the isolation between the second antenna 1121 and the first antenna system 111, and thus improves the measurement accuracy.

[0077] After the second antenna 1121 and the first antenna system 111 receive the reflected signal, the distance and azimuth angle between the object under test 103 and the first antenna system 111 and the second antenna 1121 are calculated based on the distance between the first antenna system 111 and the second antenna 1121, the difference between the frequency of the second signal 1040 transmitted by the first antenna system 111 and the frequency of the reflected signal 1041 received by the second antenna system 1121, and the difference between the frequency of the first signal 1040 transmitted by the first antenna system and the frequency of the reflected signal 1042 received by the first antenna system 111.

[0078] like Figure 11 As shown, the distance between the object under test 103 and the second line 1121 is represented by L4, and the direction angle between the object under test 103 and the second line 1121 is represented by Φ2.

[0079] When transmitting signals in the first polarization direction and the second polarization direction, the relative position of the object under test is calculated based on the distances L3 and L4 between the object under test 103 and the first antenna system 111, the first antenna 1120, the second antenna 1121, and the directional angles Φ2 and θ2, thereby identifying the shape of the object under test.

[0080] By transmitting signals with two polarization directions through the technical solutions disclosed in this application, which are received by a first antenna and a second antenna respectively, since the first signal and the second signal are in different polarization directions, the reflected signals received by the first antenna and the second antenna are also in different polarization directions. Therefore, the mutual influence between the first antenna and the second antenna is small, which improves the isolation between the receiving antennas and thus improves the measurement accuracy.

[0081] Figure 12A A flowchart illustrating a morphology recognition method provided in an embodiment of this application is shown. This method can be applied to the electronic device described in the above embodiments. The method can be executed by the electronic device, such as a terminal device; that is, the above-described morphology recognition method can be executed by hardware or software installed on the terminal device. Figure 12A As shown, the method includes the following steps:

[0082] S1210: For the first polarization direction, control the first antenna system to transmit a first signal toward the object under test. Obtain the first frequency of the first reflected signal formed by the first antenna receiving the first signal in the second antenna system after reflection by the object under test to form a first reflected signal in the first polarization direction, and the second frequency of the second reflected signal formed by the third antenna receiving the first signal after reflection by the object under test to form a second reflected signal in the first polarization direction.

[0083] Specifically, the first antenna system can be a dual-polarized antenna. The dual-polarized antenna transmits millimeter-wave signals via a built-in millimeter-wave generator. The first signal is a signal transmitted in the first polarization direction by the dual-polarized antenna, and the second signal is a signal transmitted in the second polarization direction by the dual-polarized antenna. The dual-polarized antenna can be a dual-polarized antenna with mutually orthogonal vertical and horizontal polarization, etc. The object under test can be a user's hand, and the user's hand can be freely changed in shape. The second antenna system includes a first antenna, a second antenna, and a third antenna. The third antenna is a dual-polarized antenna, which can receive the first signal reflected by the object under test to form a second reflected signal in the first polarization direction, and the second signal reflected by the object under test to form a fourth reflected signal in the second polarization direction.

[0084] S1211: For the second polarization direction, control the first antenna system to transmit a second signal towards the object under test. Obtain the third frequency of the third reflected signal formed by the second antenna receiving the second signal in the second antenna system after reflection by the object under test, and the fourth frequency of the fourth reflected signal formed by the third antenna receiving the second signal after reflection by the object under test, which is also in the second polarization direction.

[0085] It is worth noting that the first antenna system and the second antenna system have similar or identical implementations to the first antenna system 101 and the second antenna system 102 in the above embodiments. The similarities can be referred to each other, and the embodiments of this application will not be repeated here.

[0086] S1212: Determine the relative position of the object under test using the first frequency, second frequency, third frequency and fourth frequency.

[0087] In one possible implementation, such as Figure 12B As shown, determining the relative position of the object under test using the first, second, third, and fourth frequencies includes the following sub-steps:

[0088] S12120: Calculate the first frequency difference between the first frequency and the second frequency.

[0089] S12121: Calculate the first orientation angle of the object under test using the first distance and the first frequency difference between the first antenna and the third antenna.

[0090] S12122: Calculate the second frequency difference between the third and fourth frequencies.

[0091] S12123: Calculate the second orientation angle of the object under test using the second distance and the second frequency difference between the second antenna and the third antenna.

[0092] S12124: Determine the relative position of the object under test based on the first direction angle, the second direction angle, the third distance between the object under test and the first antenna, the fourth distance between the object under test and the second antenna, and the fifth distance between the object under test and the third antenna.

[0093] Specifically, the relative positions refer to the distance and azimuth angle between the object under test and the first and second antenna systems under the signal in the first polarization direction, as described in the above embodiment. Figures 4 to 6 The distance L1 and direction angle θ1 shown, as well as the distance and direction angle between the object under test and each antenna of the first antenna system and the second antenna system under the signal of the first antenna system and the second antenna system in the second polarization direction, are as described in the above embodiment as distance L2 and direction angle Φ1.

[0094] Furthermore, the first distance between the first antenna and the third antenna, and the second distance between the second antenna and the third antenna, can be λ / 2, where λ is the air wavelength.

[0095] S1213: Identify the shape of the object to be tested based on its relative position.

[0096] When the shape of the object under test changes, the relative position between the object under test and the first antenna system and the second antenna system changes accordingly, thereby identifying the shape of the object under test.

[0097] By transmitting signals with two polarization directions, which are received by a first antenna, a second antenna, and a third antenna respectively, the first and second signals are in different polarization directions. The reflected signals received by the first antenna, the second antenna, and the third antenna are also in different polarization directions. Therefore, the mutual influence between the first antenna, the second antenna, and the third antenna is small, which improves the isolation between the receiving antennas and thus improves the measurement accuracy.

[0098] Figure 12C A flowchart illustrating a morphology recognition method provided in an embodiment of this application is shown. This method can be applied to the electronic device described in the above embodiments. The method can be executed by the electronic device, such as a terminal device; that is, the above-described morphology recognition method can be executed by hardware or software installed on the terminal device. Figure 12C As shown, the method includes the following steps:

[0099] S1213: For the first polarization direction, control the first antenna system to transmit a first signal to the object under test, obtain the first frequency of the first reflected signal of the first antenna in the second antenna system that is reflected by the object under test to form a first reflected signal in the first polarization direction, and obtain the second frequency of the first antenna system that is reflected by the first signal to form a second reflected signal in the first polarization direction.

[0100] Specifically, the first antenna system includes a dual-polarized antenna that can operate in a duplex mode. That is, the first antenna system can transmit a first signal in a first polarization direction and a second signal in a second polarization direction, and can also receive a first reflected signal in a first polarization direction formed by the reflection of the first signal by the object under test and a fourth reflected signal in a second polarization direction formed by the reflection of the second signal by the object under test.

[0101] S1214: For the second polarization direction, control the first antenna system to transmit a second signal to the object under test, obtain the third frequency of the third reflected signal formed by the second antenna receiving the second signal in the second antenna system after reflection by the object under test to form a third reflected signal in the second polarization direction, and obtain the fourth frequency of the fourth reflected signal formed by the second signal receiving the second signal after reflection by the object under test to form a fourth reflected signal in the second polarization direction.

[0102] S1215: Determine the relative position of the object under test using the first frequency, second frequency, third frequency and fourth frequency.

[0103] In one possible implementation, such as Figure 12D As shown, determining the relative position of the object under test using the first, second, third, and fourth frequencies includes the following sub-steps:

[0104] S12150: Calculate the first frequency difference between the first frequency and the second frequency.

[0105] S12151: Calculate the first orientation angle of the object under test using the first distance and the first frequency difference between the first antennas in the first antenna system and the second antenna system.

[0106] S12152: Calculate the second frequency difference between the third and fourth frequencies.

[0107] S12153: Calculate the second orientation angle of the object under test using the second distance and the second frequency difference between the second antennas in the first antenna system and the second antenna system.

[0108] S12154: Determine the relative position of the object under test based on the first direction angle, the second direction angle, the third distance between the object under test and the first antenna system, the fourth distance between the object under test and the first antenna, and the fifth distance between the object under test and the second antenna.

[0109] S1216: Identify the shape of the object to be tested based on its relative position.

[0110] Specifically, the relative positions refer to the distance and azimuth angle between the object under test and the first and second antenna systems under the signal in the first polarization direction, as described in the above embodiment. Figures 8 to 11The distance L3 and the directional angle θ2 shown are, as well as the distance and directional angle between the object under test and each antenna of the first antenna system and the second antenna system under the signal of the first antenna system and the second antenna system in the second polarization direction, and the distance L4 and the directional angle Φ2 as described in the above embodiment.

[0111] Furthermore, the first distance between the first antenna system and the second distance between the first antenna system and the second antenna can be λ / 2, where λ is the air wavelength.

[0112] When the shape of the object under test changes, the relative position between the object under test and the first antenna system and the second antenna system changes accordingly, thereby identifying the shape of the object under test.

[0113] By transmitting signals with two polarization directions, which are received by a first antenna system, a first antenna, and a second antenna respectively, the first and second signals are in different polarization directions. Since the first and second signals are in different polarization directions, the reflected signals received by the first antenna system, the first antenna, and the second antenna are also in different polarization directions. Therefore, the mutual influence between the first antenna system, the first antenna, and the second antenna is small, which improves the isolation between the receiving antennas and thus improves the measurement accuracy.

[0114] Optionally, such as Figure 13 As shown, this application embodiment also provides a terminal device 1300, including a processor 1301, a memory 1302, and a program or instructions stored in the memory 1302 and executable on the processor 1301. When the program or instructions are executed by the processor 1301, they implement the various processes of the above-described morphological recognition method embodiment and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0115] Figure 14 A schematic diagram of the hardware structure of an electronic device to implement an embodiment of this application.

[0116] The electronic device 1400 includes, but is not limited to, components such as: radio frequency unit 1401, network module 1402, audio output unit 1403, input unit 1404, sensor 1405, display unit 1406, user input unit 1407, interface unit 1408, memory 1409, and processor 1410.

[0117] Those skilled in the art will understand that the electronic device 1400 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 1410 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 14The electronic device structure shown does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0118] The radio frequency (RF) unit 1401 can be used to transmit and receive first signals, second signals, first reflected signals, or second reflected signals in a first polarization direction and a second polarization direction, or to receive and transmit signals during a call. Specifically, it receives downlink data from the base station and processes it with the processor 1410; additionally, it transmits uplink data to the base station. Typically, the RF unit 1401 includes, but is not limited to, an antenna (such as a dual-polarized antenna, a single-polarized antenna, etc.), at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc. Furthermore, the RF unit 1401 can also communicate with networks and other devices through a wireless communication system.

[0119] The electronic device provides users with wireless broadband internet access through the network module 1402, such as helping users send and receive emails, browse web pages, and access streaming media.

[0120] The audio output unit 1403 can convert audio data received by the radio frequency unit 1401 or the network module 1402 or stored in the memory 1409 into audio signals and output them as sound. The audio output unit 1403 includes a speaker, a buzzer, and a receiver, etc.

[0121] It should be understood that, in the embodiments of this application, the input unit 1404 may include a graphics processing unit (GPU) 14041 and a microphone 14042. The graphics processing unit 14041 processes image data of still pictures or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode.

[0122] The display unit 1406 may include a display panel 14061, which may be configured using a liquid crystal display, an organic light-emitting diode, or other similar means. The user input unit 1407 includes a touch panel 14071 and other input devices 14072. The touch panel 14071 is also called a touchscreen. The touch panel 14071 may include a touch detection device and a touch controller. Other input devices 14072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here. The memory 1409 can be used to store software programs and various data, including but not limited to application programs and operating systems. The processor 1410 may integrate an application processor and a modem processor. The application processor mainly handles the operating system, user interface, and application programs, while the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 1410.

[0123] The electronic device 1400 also includes at least one sensor 1405, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 14061 according to the ambient light level, and the proximity sensor can turn off the display panel 14061 and / or the backlight when the electronic device 1400 is moved to the ear.

[0124] The display unit 1406 is used to display information input by the user or information provided to the user. The display unit 1406 may include a display panel 14061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0125] User input unit 1407 can be used to receive input numeric or character information, and generate key signal inputs related to user settings and function control of the electronic device. Specifically, user input unit 1407 includes a touch panel 14071 and other input devices 14072. Touch panel 14071, also known as a touch screen, can collect touch operations on or near the user (such as operations performed by the user using a finger, stylus, or any suitable object or accessory on or near touch panel 14071).

[0126] The touch panel 14071 may include two parts: a touch detection device and a touch controller. The touch detection device detects the user's touch position and the signal generated by the touch operation, transmitting the signal to the touch controller. The touch controller receives touch information from the touch detection device, converts it into touch point coordinates, and sends it to the processor 1410. The processor 1410 receives commands from the touch panel 14071 and executes them. Furthermore, the touch panel 14071 can be implemented using various types of touch sensors, such as resistive, capacitive, infrared, and surface acoustic wave sensors. In addition to the touch panel 14071, the user input unit 1407 may also include other input devices 14072. Specifically, other input devices 14072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, power buttons, etc.), a trackball, a mouse, and a joystick, which will not be elaborated further here.

[0127] Furthermore, the touch panel 14071 can cover the display panel 14061. When the touch panel 14071 detects a touch operation on or near it, it transmits the information to the processor 1410 to determine the type of touch event. Subsequently, the processor 1410 provides corresponding visual output on the display panel 14061 based on the type of touch event. Although in Figure 10 In this embodiment, the touch panel 14071 and the display panel 14061 are two independent components to realize the input and output functions of the electronic device. However, in some embodiments, the touch panel 14071 and the display panel 14061 can be integrated to realize the input and output functions of the electronic device. The specific implementation is not limited here.

[0128] Interface unit 1408 serves as an interface for connecting external devices to electronic device 1400. For example, external devices may include a wired or wireless headphone port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video I / O port, a headphone port, and so on. Interface unit 1408 can be used to receive input from external devices (e.g., data, power, etc.) and transmit the received input to one or more components within electronic device 1400, or it can be used to transmit data between electronic device 1400 and external devices.

[0129] The memory 1409 can be used to store software programs and various data. The memory 1409 may primarily include a program storage area and a data storage area. The program storage area may store the operating system, applications required for at least one function (such as sound playback, image playback, etc.), etc.; the data storage area may store data created based on the use of the mobile phone (such as audio data, phonebook, etc.). Furthermore, the memory 1409 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0130] Processor 1410 is the control center of the electronic device. It connects various parts of the electronic device via various interfaces and lines. By running or executing software programs and / or modules stored in memory 1409, and by calling data stored in memory 1409, it performs various functions and processes data, thereby providing overall monitoring of the electronic device. Processor 1410 may include one or more processing units; preferably, processor 1410 may integrate an application processor and a modem processor. The application processor mainly handles the operating system, user interface, and applications, while the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into processor 1410.

[0131] The processor 1410 is configured to: control a first antenna system to transmit a first signal toward the object under test (DUT) in a first polarization direction; acquire a first frequency of a first reflected signal in the first polarization direction formed by the first antenna receiving the first signal and reflecting it back to the DUT in a second antenna system; acquire a second frequency of a second reflected signal in the first polarization direction formed by the third antenna receiving the first signal and reflecting it back to the DUT in a third antenna system; control the first antenna system to transmit a second signal toward the DUT in a second polarization direction; acquire a third frequency of a third reflected signal in the second polarization direction formed by the second antenna receiving the second signal and reflecting it back to the DUT in a second antenna system; acquire a fourth frequency of a fourth reflected signal in the second polarization direction formed by the third antenna receiving the second signal and reflecting it back to the DUT in a third antenna system; determine the relative position of the DUT using the first, second, third, and fourth frequencies; and identify the shape of the DUT based on the relative position.

[0132] Alternatively, for the first polarization direction, control the first antenna system to transmit a first signal to the object under test; acquire the first frequency of the first reflected signal in the first polarization direction formed by the first antenna receiving the first signal in the second antenna system after reflection by the object under test, and the second frequency of the first antenna system receiving the first signal after reflection by the object under test to form a second reflected signal in the first polarization direction; for the second polarization direction, control the first antenna system to transmit a second signal to the object under test; acquire the third frequency of the third reflected signal in the second polarization direction formed by the second antenna receiving the second signal in the second antenna system after reflection by the object under test, and the fourth frequency of the fourth reflected signal in the second polarization direction formed by the first antenna system receiving the second signal after reflection by the object under test; determine the relative position of the object under test using the first, second, third, and fourth frequencies; and identify the shape of the object under test based on the relative position.

[0133] The electronic device provided in this application embodiment can achieve the same technical effects as the above embodiments, and will not be described again here to avoid repetition.

[0134] like Figure 15A As shown in the embodiment of this application, a morphology recognition device is also provided. The device 1500 includes:

[0135] The first control module 1501 is used to control the first antenna system to transmit a first signal to the object under test in a first polarization direction; the first acquisition module 1502 is used to acquire the first frequency of the first reflected signal formed by the first antenna receiving the first signal in the second antenna system and reflecting it in the first polarization direction after reflection by the object under test, and the second frequency of the third antenna receiving the first signal and reflecting it in the first polarization direction after reflection by the object under test; the second control module 1503 is used to control the first antenna system to transmit a second signal to the object under test in a second polarization direction; the second acquisition module 1504 is used to acquire the third frequency of the third reflected signal formed by the second antenna receiving the second signal in the second antenna system and reflecting it in the second polarization direction after reflection by the object under test, and the fourth frequency of the third antenna receiving the second signal and reflecting it in the second polarization direction after reflection by the object under test; the determination module 1505 is used to determine the relative position of the object under test using the first frequency, the second frequency, the third frequency, and the fourth frequency; and the identification module 1506 is used to identify the shape of the object under test based on the relative position.

[0136] The morphology recognition device provided in this application embodiment can achieve the same technical effects as the above embodiments, and will not be described again here to avoid repetition.

[0137] In one possible implementation, the determining module 1505 is further configured to calculate the first frequency difference between the first frequency and the second frequency; calculate the first azimuth angle of the object under test using the first distance between the first antenna and the third antenna and the first frequency difference; calculate the second frequency difference between the third frequency and the fourth frequency; calculate the second azimuth angle of the object under test using the second distance between the second antenna and the third antenna and the second frequency difference; and determine the relative position of the object under test based on the first azimuth angle, the second azimuth angle, the third distance between the object under test and the first antenna, the fourth distance between the object under test and the second antenna, and the fifth distance between the object under test and the third antenna.

[0138] like Figure 15B As shown in the embodiment of this application, a morphology recognition device is also provided. The device 1510 includes:

[0139] The first control module 1511 is used to control the first antenna system to transmit a first signal to the object under test in a first polarization direction; the first acquisition module 1512 is used to acquire the first frequency of the first reflected signal of the first antenna in the second antenna system that is reflected by the object under test to form a first reflected signal in the first polarization direction, and the second frequency of the first antenna system that is reflected by the first antenna in the second antenna system to form a second reflected signal in the first polarization direction; the second control module 1513 is used to control the first antenna system to transmit a second signal to the object under test in a second polarization direction; the second acquisition module 1514 is used to acquire the third frequency of the second antenna in the second antenna system that is reflected by the second antenna in the second antenna system to form a third reflected signal in the second polarization direction, and the fourth frequency of the first antenna system that is reflected by the second antenna in the second antenna system to form a fourth reflected signal in the second polarization direction; the determination module 1515 is used to determine the relative position of the object under test using the first frequency, the second frequency, the third frequency, and the fourth frequency; and the identification module 1516 is used to identify the shape of the object under test based on the relative position.

[0140] The morphology recognition device provided in this application embodiment can achieve the same technical effects as the above embodiments, and will not be described again here to avoid repetition.

[0141] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described morphological recognition method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0142] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0143] This application also provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run programs or instructions to implement the various processes of the above-described morphological recognition method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0144] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0145] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0146] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods of the various embodiments of this application.

[0147] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An electronic device, comprising: The method comprises: a substrate; a first antenna system arranged on the substrate, for transmitting a first signal of a first polarization direction and a second signal of a second polarization direction to a target object; a second antenna system arranged on the substrate, the second antenna system comprising a first antenna, a second antenna and a third antenna, wherein the third antenna is a dual-polarized antenna; in a case where the first antenna system transmits the first signal, the first antenna and the third antenna are used to receive a first reflected signal of the first polarization direction formed by reflection of the first signal by the target object; in a case where the first antenna system transmits the second signal, the second antenna and the third antenna are used to receive a second reflected signal of the second polarization direction formed by reflection of the second signal by the target object; the first antenna system and the first antenna are arranged at intervals along a first polarization direction on the substrate, the second antenna and the third antenna are arranged at intervals along the first polarization direction on the substrate, the first antenna and the third antenna are arranged at intervals along a second polarization direction on the substrate, the first antenna system and the second antenna are arranged at intervals along the second polarization direction on the substrate, and the intervals are one half of an air wavelength.

2. The electronic device of claim 1, wherein, The first antenna system comprises a dual-polarized antenna with the first polarization direction and the second polarization direction being orthogonal to each other.

3. The electronic device of claim 1, wherein, The first antenna is a single-polarized antenna supporting the first polarization direction, and the second antenna is a single-polarized antenna supporting the second polarization direction.

4. The electronic device of claim 1, wherein, The first antenna, the second antenna and the third antenna have the same operating frequency.

5. An electronic device, comprising: The method comprises: a substrate; a first antenna system arranged on the substrate, for transmitting a first signal of a first polarization direction and a second signal of a second polarization direction to a target object, the first antenna system comprising a dual-polarized antenna; a second antenna system arranged on the substrate, the second antenna system comprising a first antenna and a second antenna; in a case where the first antenna system transmits the first signal, the first antenna and the first antenna system are used to receive a first reflected signal of the first polarization direction formed by reflection of the first signal by the target object; in a case where the first antenna system transmits the second signal, the second antenna and the first antenna system are used to receive a second reflected signal of the second polarization direction formed by reflection of the second signal by the target object; the first antenna system and the first antenna are arranged at intervals along the first polarization direction on the substrate, the second antenna and the first antenna system are arranged at intervals along the second polarization direction on the substrate, and the intervals are one half of an air wavelength.

6. The electronic device of claim 5, wherein, The first antenna system comprises a dual-polarized transceiving antenna with the first polarization direction and the second polarization direction being orthogonal to each other.

7. A modality identification method applied to the electronic device of any one of claims 1 to 4, characterized in that, The method comprises: controlling a first antenna system to transmit a first signal to a target object for a first polarization direction; acquiring a first frequency of a first antenna in the second antenna system receiving a first reflected signal of the first signal reflected by the object and forming a first polarization direction, and a second frequency of a third antenna receiving a second reflected signal of the first signal reflected by the object and forming the first polarization direction; controlling the first antenna system to emit a second signal to the object for a second polarization direction; acquiring a third frequency of a second antenna in the second antenna system receiving a third reflected signal of the second signal reflected by the object and forming the second polarization direction, and a fourth frequency of the third antenna receiving a fourth reflected signal of the second signal reflected by the object and forming the second polarization direction; determining a relative position of the object by using the first frequency, the second frequency, the third frequency and the fourth frequency; recognizing a shape of the object according to the relative position.

8. The morphology identification method of claim 7, wherein, The determining the relative position of the object by using the first frequency, the second frequency, the third frequency and the fourth frequency comprises: calculating a first frequency difference between the first frequency and the second frequency; calculating a first direction angle of the object by using a first distance between the first antenna and the third antenna and the first frequency difference; calculating a second frequency difference between the third frequency and the fourth frequency; calculating a second direction angle of the object by using a second distance between the second antenna and the third antenna and the second frequency difference; determining the relative position of the object according to the first direction angle, the second direction angle, a third distance between the object and the first antenna, a fourth distance between the object and the second antenna, and a fifth distance between the object and the third antenna.

9. A modality identification method applied to the electronic device of any one of claims 4 to 6, characterized in that, The method comprises: controlling the first antenna system to emit a first signal to the object for a first polarization direction; acquiring a first frequency of a first antenna in the second antenna system receiving a first reflected signal of the first signal reflected by the object and forming a first polarization direction, and a second frequency of the first antenna system receiving a second reflected signal of the first signal reflected by the object and forming the first polarization direction; controlling the first antenna system to emit a second signal to the object for a second polarization direction; acquiring a third frequency of a second antenna in the second antenna system receiving a third reflected signal of the second signal reflected by the object and forming the second polarization direction, and a fourth frequency of the first antenna system receiving a fourth reflected signal of the second signal reflected by the object and forming the second polarization direction; determining a relative position of the object by using the first frequency, the second frequency, the third frequency and the fourth frequency; recognizing a shape of the object according to the relative position.

10. A terminal device, comprising: The apparatus comprises a processor, a memory, and a program or instructions stored in the memory and executable on the processor, and the program or instructions are executed by the processor to implement the steps of the shape recognition method according to any one of claims 7-9.

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