Antenna assembly, antenna scanning method and terminal equipment

Abstract

The embodiments of the present application relate to the field of communication technology, and in particular to an antenna assembly, an antenna scanning method and a terminal device, wherein the antenna assembly comprises: a housing, wherein a mainboard and an antenna board connected to the mainboard are arranged in the housing, wherein the antenna board is rotatable relative to the mainboard, and wherein the mainboard is in communication connection with the antenna board; a limiting component, wherein the limiting component is used to limit the antenna board after the antenna board moves to an initial position; and a control module, wherein the control module is used to control the antenna board to rotate in a first direction or a second direction, and the control module is also used to control the antenna board to rotate in a first direction until the antenna board rotates to an initial position, and obtain the signal strength received when the antenna board rotates to different positions, and the control module is also used to control the antenna board to rotate in a second direction after detecting that the antenna board rotates to an initial position so that the antenna board rotates to a first position, and the first position corresponds to a preset signal strength. The embodiments of the present application are conducive to improving the communication quality of the antenna assembly.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and in particular to an antenna component, an antenna scanning method and a terminal device. Background Art

[0002] With the development of 5G (5th generation mobile networks, the fifth generation of mobile communication technology), millimeter wave antenna arrays have been widely used due to their advantages such as large bandwidth, low latency and high rate.

[0003] CPE (Customer Premise Equipment) is a user terminal device for wireless broadband access. Since the millimeter wave emitted by the millimeter wave antenna array has a high frequency and a short wavelength, it is easily blocked by objects during propagation. Therefore, when the millimeter wave antenna is applied to CPE, the user needs to constantly adjust the position of the antenna board according to the actual signal strength so that the antenna faces the direction with the best 5G signal strength, thereby improving the communication quality.

[0004] However, there is currently a problem of poor communication quality when millimeter wave antennas are applied to CPE. Summary of the invention

[0005] The embodiments of the present application provide an antenna assembly, an antenna scanning method, and a terminal device, which are at least beneficial to improving the communication quality of the antenna assembly.

[0006] To solve the above technical problems, an embodiment of the present application provides an antenna assembly, an antenna scanning method and a terminal device, comprising: a shell, in which are arranged: a mainboard and an antenna board connected to the mainboard, the antenna board is rotatable relative to the mainboard, and the mainboard is communicatively connected to the antenna board; a limiting component, the limiting component is used to limit the antenna board after the antenna board moves to an initial position; a control module, the control module is used to control the antenna board to rotate in a first direction or a second direction, and the control module is also used to control the antenna board to rotate in the first direction until the antenna board rotates to the initial position, and obtain the signal strength received when the antenna board rotates to different positions, and the control module is also used to control the antenna board to rotate in the second direction after detecting that the antenna board rotates to the initial position so that the antenna board rotates to the first position, the first position corresponds to a preset signal strength, wherein the first direction is opposite to the second direction, and the first direction is either a clockwise direction or a counterclockwise direction.

[0007] In addition, the limiting component includes an L-shaped component and a base. The base is fixed in the outer shell. The base has a receiving groove. Installation grooves are provided on both sides of the receiving groove. The L-shaped component includes two limiting arms. Limiting protrusions are provided on both sides of the limiting arm. The limiting protrusions are inserted into the installation grooves, and the limiting protrusions are used to rotate relative to the installation grooves to drive the limiting arms to rotate relative to the receiving grooves. The limiting arms are used to stop rotating and abut one side of the antenna board after the antenna board rotates to the initial position.

[0008] In addition, the length of the mounting groove L=d+2y+a, wherein d is the diameter of the limiting protrusion, y is the diameter of the limiting arm, and a is the thickness of the antenna board.

[0009] In addition, the control module includes: a motor and a control unit. The motor is embedded on the main board. The motor has a rotating shaft. The end of the rotating shaft away from the motor is connected to the antenna board. The control unit is electrically connected to the motor. The control unit controls the rotating shaft to rotate in a first direction or in a second direction to drive the antenna board to rotate.

[0010] In addition, the control unit includes: a 5G module and an H-bridge control circuit. The 5G module is communicatively connected to the H-bridge control circuit, and the H-bridge control circuit is electrically connected to the motor. The 5G module controls the rotation angle and rotation direction of the rotating shaft by controlling the conduction time and current direction of the H-bridge control circuit, and the 5G module is also used to detect whether the antenna board has reached the initial position.

[0011] In addition, the 5G module includes: a detection unit, which is used to detect the on-current of the H-bridge control circuit; and a judgment unit, which is used to judge whether the antenna plate has rotated to an initial position after the detection unit detects that the on-current has reached a preset current.

[0012] In addition, the 5G module includes: a rotation control unit, which is used to control the conduction time of the H-bridge control circuit to adjust the rotation angle of the rotating shaft; a signal detection unit, which is communicatively connected to the rotation control unit, and is used to detect the signal strength received when the antenna board rotates to different positions during the rotation of the antenna board; a recording unit, which is communicatively connected to the rotation control unit and the signal detection unit, and is used to record the rotation angle of the rotating shaft and the signal strength corresponding to the rotation angle; a comparison unit, which is communicatively connected to the signal detection unit and the recording unit, and is used to compare the multiple signal strengths recorded by the recording unit and filter out the preset signal strength after the detection unit detects that the antenna board has rotated to the initial position.

[0013] Accordingly, an embodiment of the present application also provides an antenna scanning method, which can be applied to any of the above-mentioned antenna assemblies, including: a control module controls the antenna plate to rotate in a first direction until the antenna plate rotates to an initial position, and obtains the signal strength received when the antenna plate rotates to different positions; a limiting component limits the antenna plate after the antenna plate moves to the initial position; after detecting that the antenna plate rotates back to the initial position, the control module controls the antenna plate to rotate in a second direction so that the antenna plate rotates to a first position, and the first position corresponds to a preset signal strength, wherein the first direction is opposite to the second direction, and the first direction is either a clockwise direction or a counterclockwise direction.

[0014] In addition, the control module includes: a first detection unit and a second detection unit, and also includes: before the antenna plate rotates in the first direction, the first detection unit detects whether the antenna plate is in an initial position; after the antenna plate rotates in the first direction, the second detection unit detects whether the antenna plate turns back to the initial position.

[0015] Correspondingly, an embodiment of the present application also provides a terminal device, comprising the antenna assembly provided by any of the above items and a device body, wherein the antenna assembly is disposed in the device body.

[0016] The technical solution provided by the embodiments of the present application has at least the following advantages:

[0017] In the technical solution of the antenna assembly provided in the embodiment of the present application, a limiting component and a control module are provided. The limiting component limits the antenna board after the antenna board rotates to the initial position, that is, it can ensure that the antenna board stops rotating each time after rotating to the initial position. The control module controls the antenna board to rotate in the first direction, and obtains the first position of the antenna board when receiving the preset signal strength, and the control module also controls the antenna board to rotate in the second direction when detecting that the antenna board rotates to the initial position, so that the antenna board rotates to the first position. Since the limiting component stops the antenna board from rotating after rotating to the initial position, it can be ensured that each time the control module controls the antenna board to rotate in the second direction, it starts to rotate from the initial position, that is, closed-loop control is realized, and it can be ensured that each time the control module obtains the first position, it can control the antenna board to rotate in the second direction with the same initial position as the starting point, so that the actual position of the antenna board is consistent with the first position, so that the antenna board can receive a signal with a preset signal strength, thereby improving the communication quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplifications do not constitute limitations on the embodiments. Unless otherwise stated, the pictures in the drawings do not constitute proportional limitations.

[0019] Figure 1A schematic diagram of the structure of an antenna assembly provided in one embodiment of the present application;

[0020] Figure 2 A schematic diagram of the structure of a limiting component in an antenna assembly provided in an embodiment of the present application;

[0021] Figures 3 to 5 A schematic diagram of a state of an antenna plate rotating in an antenna assembly provided by an embodiment of the present application;

[0022] Figure 6 A schematic front view of a limiting component in an antenna assembly provided in an embodiment of the present application;

[0023] Figure 7 A connection relationship diagram of a control unit in an antenna assembly provided in one embodiment of the present application;

[0024] Figure 8 A schematic diagram of an H-bridge control circuit in an antenna assembly provided in one embodiment of the present application;

[0025] Fig. 9 A connection relationship diagram of a detection unit in an antenna assembly provided in an embodiment of the present application;

[0026] Fig.10 A method flow chart of an antenna scanning method provided in another embodiment of the present application. DETAILED DESCRIPTION

[0027] As can be seen from the background art, the current antenna assembly has the problem of poor communication quality.

[0028] Analysis has found that one of the reasons for the poor communication quality of the current antenna assembly is that, at present, due to the poor diffraction ability of millimeter waves, when millimeter wave antennas are applied to CPE, millimeter wave signal machines are easily blocked and cause signal blocking, and millimeter waves do not have the ability to penetrate walls. Therefore, every time the user uses the millimeter wave antenna assembly, he needs to continuously adjust the position of the antenna board according to the actual signal strength so that the antenna board faces the direction with the strongest signal strength. At present, the rotation angle of the antenna board is mainly controlled by the control circuit, which is equivalent to open-loop control of the rotation angle of the antenna board, that is, during each rotation, there will be an error between the rotation angle set by the control circuit and the actual rotation angle of the antenna board. After a long period of use, the error will gradually accumulate, so that there will be a large error between the rotation angle set by the control circuit and the actual rotation angle of the antenna board. And if the control circuit is used to control the rotation angle of the antenna board, when the power is abnormally off, after powering on again, the initial position of the antenna board cannot be obtained, so that the position with the strongest signal strength cannot be accurately located.

[0029] An embodiment of the present application provides an antenna assembly, which is provided with a control module and a limiting component. The control module controls the antenna plate to rotate in a first direction until it stops when it rotates to an initial position, and detects the signal strength received at different positions to obtain the first position of the antenna plate when it receives a preset signal strength. The limiting component ensures that the antenna plate stops rotating after rotating to the initial position, and rotates based on the same initial position next time, thereby realizing closed-loop control of the rotation position of the antenna plate. Therefore, it can be ensured that the control module can control the antenna plate to rotate in the second direction starting from the same initial position each time after obtaining the first position, so that the position to which the antenna plate actually rotates is consistent with the first position, so that the antenna plate receives a signal with a preset signal strength, thereby improving the communication quality.

[0030] The following will describe the various embodiments of the present application in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present application, many technical details are provided in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solution claimed in the present application can be implemented.

[0031] Figure 1 A schematic diagram of the structure of an antenna assembly provided in one embodiment of the present application.

[0032] refer to Figure 1 The antenna assembly includes: a shell, in which: a mainboard 1 and an antenna board 2 connected to the mainboard 1 are arranged, the antenna board 2 is rotatable relative to the mainboard 1, and the mainboard 1 is communicatively connected to the antenna board 2; a limiting component 3, the limiting component 3 is used to limit the antenna board 2 after the antenna rotates to an initial position; a control module, the control module is used to control the antenna board 2 to rotate in a first direction or a second direction, and the control module is also used to control the antenna board 2 to rotate in the first direction until the antenna board 2 rotates to the initial position, and obtain the signal strength received when the antenna board 2 rotates to different positions, and the control module is also used to control the antenna board 2 to rotate in the second direction after detecting that the antenna board 2 rotates to the initial position so that the antenna board 2 rotates to the first position, the first position corresponds to the preset signal strength, wherein the first direction is opposite to the second direction, and the first direction is either a clockwise direction or a counterclockwise direction.

[0033] The position-limiting component 3 ensures that the antenna plate 2 stops rotating after rotating to the initial position, and then rotates in the second direction based on the same initial position the next time, thereby realizing closed-loop control of the rotation position of the antenna plate 2. Therefore, it can be ensured that the control module can control the antenna plate 2 to rotate in the second direction with the same initial position as the starting point each time after obtaining the first position, so that the actual position of the antenna plate 2 is consistent with the first position, so that the antenna plate 2 receives a signal with a preset signal strength, thereby improving the communication quality.

[0034] In some embodiments, the main board 1 may be a CPE main board, which is used to receive the wireless network signal sent by the base station and convert the wireless network signal into a WiFi signal. Therefore, the main board 1 is set to communicate with the antenna board 2. When the antenna board 2 receives the wireless network signal from the base station, the main board 1 converts the wireless network signal into a WiFi signal. In some embodiments, the communication connection between the antenna board 2 and the main board 1 can be achieved through a flexible soft board with an LCP (Liquid Crystal Polymer) medium. In some embodiments, the signal strength when the received signal strength is the strongest when the antenna board 2 faces different directions is used as the preset signal strength. In this way, when the control module controls the antenna board 2 to rotate to the first position in the second direction, the signal strength received by the antenna board 2 is stronger, which is beneficial to improving the communication quality.

[0035] Figure 2 A schematic diagram of the structure of a limiting component in an antenna assembly provided in one embodiment of the present application.

[0036] refer to Figure 2 In some embodiments, the limiting component 3 includes an L-shaped component and a base 10, the base 10 is fixed in the housing, the base 10 has a receiving slot, and the receiving slot is provided with mounting slots 11 on both sides, the L-shaped component includes two limiting arms 20, and the limiting arms 20 are provided with limiting protrusions 40 on both sides, the limiting protrusions 40 are inserted into the mounting slots 11, and the limiting protrusions 40 are used to rotate relative to the mounting slots 11 to drive the limiting arms 20 to rotate relative to the receiving slots, and the limiting arms 20 are used to stop rotating and abut against one side of the antenna board 2 after the antenna board 2 rotates to the initial position. The limiting component 3 is set to mechanically limit the antenna board 2 to ensure that the antenna board 2 stops after rotating to the initial position, so that the antenna board 2 stops at the same initial position each time after rotating. The control module controls the antenna board 2 to rotate to the initial position in the first direction and obtains the first position, and the control module controls the antenna board 2 to rotate to the first position in the second direction starting from the initial position as a use cycle. Combined with the above analysis, it can be known that in each use cycle, when the control module controls the antenna plate 2 to rotate in the second direction, it can start to rotate from the same initial position as the starting point. Therefore, different use cycles will not affect each other, and closed-loop control of the rotation of the antenna plate 2 is achieved, thereby ensuring that the control module can control the antenna plate 2 to rotate in the second direction from the same initial position as the starting point each time after obtaining the first position, so that the actual position of the antenna plate 2 is consistent with the first position. Even if the motor is abnormally powered off, after the motor is powered on again, it only needs to control the antenna plate 2 to continue to rotate arbitrarily at the current position, and it can rotate to the same initial position, thereby saving the additional cost overhead caused by abnormal power failure.

[0037] In some embodiments, the two limit arms 20 further include: a connecting portion 30, the connecting portion 30 is used to connect the two limit arms 20, the connecting portion 30 is arc-shaped, and the limit protrusion 40 is located at the intersection of the extension lines of the two limit arms 20, so that when the limit protrusion 40 rotates relative to the installation groove 11, the two limit arms 20 can be rotated relative to the receiving groove with the limit protrusion 40 as a fulcrum. In some embodiments, the limit arm 20 rotates along the length extension direction of the receiving groove. When the limit arm 20 rotates to contact the bottom of the receiving groove, the bottom of the receiving groove abuts against the limit arm 20, so that the limit arm 20 stops rotating. At the same time, the other limit arm 20 that is not in contact with the bottom of the receiving groove abuts against one side of the antenna board 2, forcing the antenna board 2 to stop rotating, thereby limiting the antenna board 2.

[0038] In some embodiments, the two limit arms 20 are vertically arranged, and the bottom of the connecting portion 30 can contact the bottom of the accommodating groove. In this way, when the antenna board 2 rotates with the initial position as the starting point, it can be ensured that the antenna board 2 rotates a full 360°, that is, a full circle, when it rotates to the initial position, so that the control module can fully detect the signal strength received by the antenna board 2 when it is in different positions, which is conducive to obtaining the first position corresponding to the preset signal strength.

[0039] Figures 3 to 5 A schematic diagram of a state of an antenna plate rotating in an antenna assembly provided in an embodiment of the present application, with reference to Figures 3 to 5 The specific principle is as follows: the two limit arms 20 are respectively recorded as: a first limit arm 21 and a second limit arm 22, and the two opposite surfaces of the antenna plate 2 are recorded as a first surface and a second surface.

[0040] refer to Figure 3 When the antenna board 2 is in the initial position, the first limiting arm 21 contacts the bottom of the accommodating groove, and the first limiting arm 21 is parallel to the bottom of the accommodating groove. Since the second limiting arm 22 is perpendicular to the first limiting arm 21, the second limiting arm 22 is perpendicular to the bottom of the accommodating groove, and the first surface of the antenna board 2 abuts against the side of the second limiting arm 22 away from the first limiting arm 21.

[0041] The control module controls the antenna board 2 to rotate in the first direction. In some embodiments, the direction in which the first limit arm 21 points to the second limit arm 22 is the counterclockwise direction, and the first direction is the counterclockwise direction, that is, the antenna board 2 rotates in the direction away from the first limit arm 21 and the second limit arm 22. Therefore, the antenna board 2 has no force on the first limit arm 21 and the second limit arm 22, so that the first limit arm 21 and the second limit arm 22 remain stationary.

[0042] refer to Figure 4, the antenna board 2 rotates to 180 degrees in the first direction, at which time the first surface of the antenna board 2 contacts the side surface of the second limiting arm 22 facing the first limiting arm 21 .

[0043] The antenna plate 2 continues to rotate in the first direction. Since the first surface of the antenna plate 2 abuts against the side surface of the second limit arm 22 toward the first limit arm 21, when it continues to rotate in the direction away from the first limit arm 21 and the second limit arm 22, it will drive the second limit arm 22 to rotate in the first direction until the second limit arm 22 abuts against the bottom of the accommodating groove. At this time, the first limit arm 21 is perpendicular to the bottom of the accommodating groove.

[0044] refer to Figure 5 , the antenna board 2 continues to rotate in the first direction until the second surface of the antenna board 2 abuts against the side of the first limiting arm 21 away from the second limiting arm 22. Since the second limiting arm 22 abuts against the bottom of the receiving groove, the first limiting arm 21 cannot rotate toward the second limiting arm 22, thereby forcing the antenna board 2 to be unable to continue to rotate in the first direction, thus playing a limiting role. Because before the antenna plate 2 rotates in the first direction, the first surface of the antenna plate 2 contacts the second limit arm 22, and the second limit arm 22 is perpendicular to the bottom of the accommodating groove, and after the antenna plate 2 rotates in the first direction and stops, the second surface of the antenna plate 2 contacts the first limit arm 21, and the first limit arm 21 is perpendicular to the bottom of the accommodating groove, that is, before the antenna plate 2 starts to rotate, the position of the second limit arm 22 relative to the accommodating groove is the same as the position of the first limit arm 21 relative to the accommodating groove when the antenna plate 2 stops rotating, and the antenna plate 2 contacts the second limit arm 22 when it starts to rotate, and contacts the first limit arm 21 when it stops rotating, which is equivalent to the antenna plate 2 rotating back to its initial position.

[0045] It is worth noting that in some embodiments, when the thickness of the antenna board 2 is large and the diameter of the limiting arm 20 is large, in order to ensure that the antenna board 2 rotates from the initial position as the starting point until the limiting component 3 limits the antenna board 2 and rotates a full 360°, it is also necessary to take the thickness of the antenna board 2 and the diameter of the limiting arm 20 into consideration when designing the limiting component 3.

[0046] Specifically, if the position of the first surface before the antenna plate 2 rotates in the first direction is point A, the position of the first surface after the antenna plate 2 rotates in the first direction and stops is point B. Combined with the above analysis: before the antenna plate 2 rotates in the first direction, the first surface of the antenna plate 2 contacts the side of the second limit arm 22 away from the first limit arm 21; when the antenna plate 2 rotates in the first direction and stops, the second surface of the antenna plate 2 contacts the side of the first limit arm 21 away from the second limit arm 22. It can be seen that the distance between point A and point B is the diameter of two limit arms 20 plus the thickness of the antenna plate 2. When point A coincides with point B, the antenna plate 2 rotates 360°. Therefore, after the antenna plate 2 rotates in the first direction and stops, it is necessary to move in the first direction by the diameter of two limit arms 20 and the thickness of one antenna plate 2 to make point A coincide with point B.

[0047] refer to Figure 6 , Figure 3 , Figure 4 as well as Figure 5 , Figure 6 The schematic diagram of the main view of the limiting component in the antenna assembly provided in one embodiment of the present application is based on the above analysis. In some embodiments, the length of the mounting groove 11 is set to L=d+2y+a, where d is the diameter of the limiting protrusion 40, y is the diameter of the limiting arm 20, and a is the thickness of the antenna board 2. Specifically, in some embodiments, the mounting groove 11 has a first side and a second side opposite to each other, and the direction from the first side to the second side is the same as the first direction. Before the antenna board 2 rotates in the first direction, the limiting protrusion 40 is located on the first side of the mounting groove 11. When the second surface of the antenna board 2 contacts the side of the first limiting arm 21 away from the second limiting arm 22, since the limiting protrusion 40 still has a moving distance of 2y+a to the second side, at this time, the first limiting arm 21 is continued to be controlled to rotate in the first direction, so that the limiting protrusion 40 drives the limiting arm 20 to move in the first direction by a distance of 2y+a and stops, so that point A coincides with point B, thereby ensuring that the antenna board 2 rotates a full 360°. In this way, when the antenna board 2 takes the initial position as the starting point and returns to the initial position after rotating 360°, the control module can detect the signal strength received by the antenna board 2 at different positions to the maximum extent, so that the screened preset signal strength is as close as possible to the actual strongest signal strength, which is beneficial to improving the communication quality of the antenna assembly.

[0048] Continue to refer Figure 1In some embodiments, the control module includes: a motor 5 and a control unit. The motor 5 is embedded on the main board 1. The motor 5 has a rotating shaft 6. The end of the rotating shaft 6 away from the motor 5 is connected to the antenna board 2. The control unit is electrically connected to the motor 5. The control unit controls the rotating shaft 6 to rotate in the first direction or in the second direction to drive the antenna board 2 to rotate. That is, by controlling the rotation angle of the rotating shaft 6, the rotation angle of the antenna board 2 relative to the rotation starting point can be controlled, so that the antenna board 2 can be controlled to rotate to different positions, and the signal strength received when the antenna board 2 is in different positions can be obtained. In some embodiments, the motor 5 is a DC motor 5. Therefore, the rotation direction of the rotating shaft 6 can be adjusted by changing the direction of the current flowing through the motor 5, so that the antenna board 2 can rotate in the first direction or in the second direction. In addition, the running time of the motor 5 can be controlled by controlling the conduction time of the current in the motor 5, so as to control the rotation angle of the rotating shaft 6. Among them, the corresponding relationship between the conduction time of the motor 5 and the rotation angle of the rotating shaft 6 is jointly determined by factors such as the process of the motor 5 and the size of the antenna board 2. In some embodiments, when the conduction time of the motor 5 is 1 s, the rotation angle of the rotating shaft 6 is 15°.

[0049] Figure 7 A connection diagram of a control unit in an antenna assembly provided in an embodiment of the present application, with reference to Figure 7 as well as Figure 1 In some embodiments, the control unit may include: a 5G module 101 and an H-bridge control circuit 102, wherein the 5G module 101 is in communication connection with the H-bridge control circuit 102, and the H-bridge control circuit 102 is electrically connected to the motor 5, and the 5G module 101 controls the rotation angle and rotation direction of the rotating shaft 6 by controlling the conduction time and current direction of the H-bridge control circuit 102, and the 5G module 101 is also used to detect whether the antenna board 2 reaches the initial position. By using the H-bridge control circuit 102 to control the current conduction direction of the DC motor 5, there is no need to design a complex algorithm and does not occupy the processor thread, which is conducive to miniaturization of the antenna assembly.

[0050] Figure 8 A schematic diagram of an H-bridge control circuit in an antenna assembly provided in an embodiment of the present application, with reference to Figure 8 as well as Figure 1The H-bridge motor 5 driving circuit includes 4 transistors, the first transistor is marked as Q1, the second transistor is marked as Q2, the third transistor is marked as Q3, and the fourth transistor is marked as Q4. The first transistor Q1 and the second transistor Q2 are connected and located on the same side, the third transistor Q3 and the fourth transistor Q4 are connected and located on the same side, the first transistor Q1 and the fourth transistor Q4 are arranged diagonally, the second transistor Q2 and the fourth transistor Q3 are arranged diagonally, one end of the motor 5 is connected to the connection node of the first transistor Q1 and the second transistor Q2, and the other end of the motor 5 is connected to the connection node of the third transistor Q3 and the fourth transistor Q4. When the first transistor Q1 and the fourth transistor Q4 are turned on, the current flows from the positive electrode of the power supply through the first transistor Q1 to the motor 5, and then returns to the negative electrode of the power supply through the fourth transistor Q4, controlling the rotating shaft 6 of the motor 5 to rotate in the first direction, thereby driving the antenna board 2 to rotate in the first direction; when the second transistor Q2 and the fourth transistor Q3 are turned on, the current flows from the positive electrode of the power supply through the third transistor Q3 to the motor 5, and then returns to the negative electrode of the power supply through the second transistor Q2, wherein the conduction direction of the current from the third transistor Q3 to the second transistor Q2 is different from the conduction direction of the current from the first transistor Q1 to the fourth transistor Q4, so as to control the rotating shaft 6 of the motor 5 to rotate in the second direction, thereby driving the antenna board 2 to rotate in the second direction. In other words, only two IO ports are required to respectively control the conduction of the first transistor Q1 and the fourth transistor Q4 and the conduction of the second transistor Q2 and the fourth transistor Q3, which is conducive to simplifying the control components required for the antenna assembly and realizing the miniaturization of the antenna assembly, wherein the IO port can be set in the 5G module 101.

[0051] In some embodiments, the 5G module 101 includes: a detection unit, the detection unit is used to detect the conduction current of the H-bridge control circuit 102; and a judgment unit, the judgment unit is used to judge that the antenna board 2 rotates to the initial position after the detection unit detects that the conduction current reaches the preset current. In some embodiments, the preset current can be a stall current. Since the limiting component 3 is set to limit the antenna board 2 when it rotates to the initial position, the antenna board 2 stops rotating when it rotates to the initial position. That is, even if the control module controls the antenna board 2 to continue to rotate in the first direction, the antenna board 2 will not be able to rotate because the limiting component 3 mechanically limits the antenna board 2. At this time, a stall current will be generated, which is greater than the rated current of the motor 5. Therefore, when the detection unit detects that the conduction current in the H-bridge control circuit 102 reaches the stall current, the judgment unit determines that the antenna board 2 rotates to the initial position. Specifically, in some embodiments, the stall current can be 1A to 2A.

[0052] In some embodiments, in order to improve the accuracy of the determination unit in determining whether the antenna board 2 rotates to the initial position, the detection unit may be further configured to detect the duration of the preset current after detecting the preset current. When the duration reaches the preset time threshold, it is determined that the antenna board 2 rotates to the initial position. This is because when the motor 5 continuously operates with the preset current, it indicates that the motor 5 cannot rotate for a long time, and at this time, the possibility of the motor 5 being blocked is relatively high. In some embodiments, the preset time threshold may be set to 150 ms to 250 ms.

[0053] Specifically, referring to Fig. 9 、 Figure 8 and Figure 1 , Fig. 9 is a connection diagram of the detection unit in an antenna assembly provided by an embodiment of the present application. In some embodiments, the detection unit may include: a detection resistor R3, a single-supply operational amplifier, and an analog-to-digital converter. The detection resistor R3 is connected in series with the motor 5. Both ends of the detection resistor R3 are connected to the single-supply operational amplifier, and the single-supply operational amplifier is connected to the analog-to-digital converter. Since the detection resistor R3 is connected in series with the motor 5, the current flowing through the detection resistor R3 is the same as the current flowing through the motor 5. Therefore, the conduction current flowing through the motor 5 can be obtained by detecting the current of the detection resistor R3. When there is a current flowing through the detection resistor R3, there will be a voltage difference across both ends of the detection resistor R3. The single-supply operational amplifier outputs a gain voltage based on the voltage difference across both ends of the detection resistor R3. The analog-to-digital converter converts this voltage into a digital signal. The processing of the digital signal is relatively simple and accurate, which is beneficial to subsequent determination of whether the current flowing through the detection resistor R3 is a blocked current. Specifically, when the digital signal obtained by the analog-to-digital converter is the digital signal corresponding to the preset current, it is determined that the antenna board 2 rotates to the initial position.

[0054] In some embodiments, the single-supply operational amplifier may include: a first single-supply operational amplifier 103 and a second single-supply operational amplifier 104. Among them, the IN+ terminal of the first single-supply operational amplifier 103 is connected to the first terminal A of the detection resistor R3, the IN- terminal of the first single-supply operational amplifier 103 is connected to the second terminal B of the detection resistor R3, the IN- terminal of the second single-supply operational amplifier 104 is connected to the first terminal A of the detection resistor R3, and the IN+ terminal of the second single-supply operational amplifier 104 is connected to the second terminal B of the detection resistor R3. That is to say, the connection method of the first single-supply operational amplifier to both ends of the detection resistor R3 is opposite to the connection method of the second single-supply operational amplifier 104 to both ends of the detection resistor R3. Since the single-supply operational amplifier is powered by a single power supply, that is, when IN+ < IN-, it outputs 0V, and only when IN+ > IN-, the single-supply operational amplifier will output a gain voltage.

[0055] Based on the above analysis, when the current flows from the positive pole of the power supply through the first transistor Q1 to the motor 5, and then returns to the negative pole of the power supply through the fourth transistor Q4, IN+ > IN- of the first single-supply operational amplifier 103, and IN+ < IN- of the second single-supply operational amplifier 104. Therefore, only the first single-supply operational amplifier 103 works. The first single-supply operational amplifier 103 can output a gain voltage and transmit it to the analog-to-digital converter. That is, the first single-supply operational amplifier 103 can be used to detect the preset current when the antenna board 2 rotates to the initial position in the first direction. Similarly, when the current flows from the positive pole of the power supply through the third transistor Q3 to the motor 5, and then returns to the negative pole of the power supply through the second transistor Q2, IN+ < IN- of the first single-supply operational amplifier 103, and IN+ > IN- of the second single-supply operational amplifier 104. Therefore, only the second single-supply operational amplifier 104 works. The second single-supply operational amplifier 104 can output a gain voltage and transmit it to the analog-to-digital converter. That is, the second single-supply operational amplifier 104 can be used to detect the preset current when the antenna board 2 rotates to the initial position in the second direction. In some embodiments, the analog-to-digital converter may also include: a first analog-to-digital converter ADC1 and a second analog-to-digital converter ADC2. Among them, the first analog-to-digital converter ADC1 is connected to the first single-supply operational amplifier 103, and the second analog-to-digital converter ADC2 is connected to the second single-supply operational amplifier 104. In this way, only by judging whether the first analog-to-digital converter ADC1 and the second analog-to-digital converter ADC2 generate digital signals, it is possible to judge whether the antenna board 2 rotates to the initial position in the first direction or the second direction, realizing a visual judgment.

[0056] In some embodiments, the 5G module 101 includes: a rotation control unit for controlling the conduction time of the H-bridge control circuit 102 to regulate the rotation angle of the rotating shaft 6; a signal detection unit communicatively connected to the rotation control unit for detecting the signal strength received at different positions of the antenna board 2 during the rotation of the antenna board 2; a recording unit communicatively connected to the rotation control unit and the signal detection unit for recording the rotation angle of the rotating shaft 6 and the signal strength corresponding to the rotation angle; a comparison unit communicatively connected to the signal detection unit and the recording unit for comparing and screening out the preset signal strength from the multiple signal strengths recorded by the recording unit after the detection unit detects that the antenna board 2 rotates to the initial position.

[0057] The rotation control unit controls the rotation angle of the antenna plate 2 relative to the rotation starting point by regulating the rotation angle of the rotation shaft 6. Specifically, the rotation control unit can set the angle of each rotation of the rotation shaft 6 so that the antenna plate 2 stops rotating after each rotation of a preset angle, so that the signal detection unit can detect the signal strength received by the antenna plate 2 when it is in this position. Specifically, the angle of each rotation of the rotation shaft 6 can be set according to the detection accuracy requirements of the signal strength received when the antenna plate 2 is in different positions. For example, when it is necessary to more accurately obtain the signal strength received at different positions during the rotation of the antenna plate 2, the angle of each rotation of the rotation shaft 6 can be set to be smaller, so that the signal strength received by the antenna plate 2 at multiple positions can be detected. Specifically, in some embodiments, the angle of each rotation of the rotation shaft 6 can be set to 15°.

[0058] The recording unit records the rotation angle of the rotating shaft 6 and the signal strength corresponding to the rotation angle, that is, the recording unit records the signal strength received when the antenna plate 2 rotates to different positions, and records the position corresponding to the signal strength. In this way, the position of the antenna plate 2 can be matched one by one with the signal strength received by the antenna plate 2 at the position, so that after the comparison unit screens out the preset signal strength, it can obtain the first position corresponding to the preset signal strength. After obtaining the first position, the antenna plate 2 can be controlled to rotate in the second direction by a corresponding angle so that the signal strength received by the antenna plate 2 is the preset signal strength.

[0059] Specifically, the rotation control unit stops the antenna plate 2 from rotating after each rotation of a preset angle, and sends a first feedback signal to the recording unit and the signal detection unit. The recording unit records the rotation angle of the rotating shaft 6 based on the first feedback signal, and the signal detection unit detects the signal strength received when the antenna plate 2 is at this position based on the first feedback signal. After completing the signal strength detection at this position, the signal detection unit sends a second feedback signal to the recording unit, and the recording unit excites the signal strength detected by the signal detection unit based on the second feedback signal, and forms a corresponding relationship between the detected signal strength and the rotation angle. Each time the rotation control unit controls the antenna plate 2 to rotate a preset angle, the recording unit records the signal strength received when the antenna plate 2 is at this position and the rotation angle of the rotating shaft 6. In this way, the signal strength received when the antenna plate 2 is at different positions and the rotation angle of the rotating shaft 6 can be recorded correspondingly. It can be understood that in some embodiments, the rotation angle recorded by the recording unit can be the total rotation angle of the rotating shaft 6, that is, the angle difference between the current position of the rotating shaft 6 and the position of the rotating shaft 6 before the first rotation is recorded.

[0060] In some embodiments, the recording unit can also be connected to the detection unit for communication. When the antenna plate 2 is set to start rotating from the initial position, the recording unit can also be used to determine whether the motor 5 has failed. When the motor 5 fails, the motor 5 will generate a stall current. Therefore, when the detection unit detects that the conduction current of the H-bridge control circuit 102 reaches the stall current, it is possible that the motor 5 has failed or the antenna plate 2 has rotated to the initial position. Since the rotating shaft 6 rotates 360° when the antenna plate 2 rotates to the initial position, if the motor 5 fails, the rotation angle of the rotating shaft 6 will be less than 360°. Therefore, the rotation angle of the rotating shaft 6 recorded by the recording unit can be used to determine whether the motor 5 has failed.

[0061] In some embodiments, the signal strength when the received signal strength is the strongest when the antenna plate 2 faces different directions is used as the preset signal strength. In this way, when the control module controls the antenna plate 2 to rotate to the first position in the second direction, a stronger signal can be received, which is beneficial to improving the communication quality. Based on this, a comparison unit is set. When the detection unit detects that the antenna plate 2 has rotated to the initial position, the multiple signal strengths recorded by the recording unit are compared, and the preset signal strength and the first position corresponding to the preset signal strength are screened out. The comparison unit is set to perform a comparison after the antenna plate 2 rotates to the initial position. In this way, the antenna plate 2 is rotated to as many positions as possible, so that the detection unit can more comprehensively detect the signal strength received when the antenna plate 2 is in different positions. The preset signal strength obtained by screening is closer to the maximum signal strength, thereby improving the communication quality of the antenna assembly.

[0062] In the antenna assembly provided in the above embodiment, a control module is provided to control the antenna plate 2 to rotate in the first direction, and obtain the first position of the antenna plate 2 when receiving the preset signal strength, and the control module also controls the antenna plate 2 to rotate in the second direction when detecting that the antenna plate 2 rotates to the initial position, so that the antenna plate 2 rotates to the first position. A limit component 3 is provided to stop the antenna plate 2 from rotating after rotating to the initial position, so as to ensure that each time the control module controls the antenna plate 2 to rotate in the second direction, it starts to rotate from the initial position, that is, to achieve closed-loop control, so that each time the control module obtains the first position, it can control the antenna plate 2 to rotate in the second direction starting from the same initial position, so that the position to which the antenna plate 2 actually rotates is consistent with the first position, so that the antenna plate 2 can receive a signal with a preset signal strength, thereby improving the communication quality.

[0063] Correspondingly, an embodiment of the present application also provides an antenna scanning method, which can be applied to the antenna assembly provided in the previous embodiment of the application. The antenna scanning method provided in another embodiment of the present application will be described in detail below in conjunction with the accompanying drawings.

[0064] Fig.10 A method flow chart of an antenna scanning method provided in another embodiment of the present application.

[0065] refer to Fig.10 as well as Figure 1 , the control module controls the antenna board 2 to rotate in a first direction until the antenna board 2 rotates to an initial position, and obtains the signal strength received when the antenna board 2 rotates to different positions; in some embodiments, the control module may include a motor 5 and a control unit, the motor 5 is embedded in the main board 1, the motor 5 has a rotating shaft 6, and the end of the rotating shaft 6 away from the motor 5 is connected to the antenna board 2 to drive the antenna board 2 to rotate. The control unit controls the rotation angle of the rotating shaft 6 to control the rotation angle of the antenna board 2 relative to the rotation starting point, thereby controlling the antenna board 2 to rotate to different positions, and obtaining the signal strength received when the antenna board 2 is in different positions. Specifically, the control unit can set the angle of each rotation of the rotating shaft 6 so that the antenna board 2 stops rotating after rotating a preset angle each time, so as to detect the signal strength received when the antenna board 2 is in this position, and record the signal strength received when the antenna board 2 is in this position and the rotation angle of the rotating shaft 6.

[0066] After the antenna plate 2 moves to the initial position, the limiting component 3 limits the antenna plate 2; the limiting component 3 ensures that the antenna plate 2 stops rotating after rotating to the initial position, and rotates in the second direction based on the same initial position next time, thereby realizing closed-loop control of the rotation position of the antenna plate 2. Therefore, it can be ensured that the control module can control the antenna plate 2 to rotate in the second direction starting from the same initial position each time after obtaining the first position, so that the actual position of the antenna plate 2 is consistent with the first position, so that the antenna plate 2 receives a signal with a preset signal strength, thereby improving the communication quality. The description of the specific structure and working principle of the limiting component 3 can be referred to the previous application embodiment, which will not be repeated below.

[0067] After detecting that the antenna plate 2 rotates back to the initial position, the control module controls the antenna plate 2 to rotate in the second direction so that the antenna plate 2 rotates to the first position, and the first position corresponds to the preset signal strength, wherein the first direction is opposite to the second direction, and the first direction is either clockwise or counterclockwise. In some embodiments, the signal strength when the received signal strength is the strongest when the antenna plate 2 faces different directions is used as the preset signal strength, so that when the control module controls the antenna plate 2 to rotate in the second direction to the first position, the signal strength received by the antenna plate 2 is stronger, which is beneficial to improving the communication quality. In some embodiments, the control unit compares the multiple recorded signal strengths, and screens out the preset signal strength and the first position corresponding to the preset signal strength.

[0068] In some embodiments, the control unit can be set to detect whether the antenna plate 2 rotates to the initial position after each rotation of a preset angle. If the antenna plate 2 does not rotate to the initial position, the control unit controls the rotating shaft 6 to continue to rotate in the first direction. If the antenna plate 2 rotates to the initial position, the control unit controls the motor 5 to stop running. In other words, whether the antenna plate 2 rotates to the initial position is continuously monitored to timely understand whether the antenna plate 2 rotates to the initial position. In this way, the problem of motor 5 continuing to run after the antenna plate 2 rotates to the initial position, which may cause damage to the motor 5, can be prevented. In some embodiments, the preset current can be the stall current of the motor 5.

[0069] In some embodiments, the antenna plate 2 can be set to rotate with the initial position as the starting point, and return to the initial position when it rotates 360°. In this way, the control module can comprehensively detect the signal strength received by the antenna plate 2 at different positions, so that the screened preset signal strength is as close to the actual strongest signal strength as possible. Based on this, in some embodiments, the control module can also include: a first detection unit and a second detection unit, and also include: before the antenna plate 2 rotates in the first direction, the first detection unit detects whether the antenna plate 2 is in the initial position; after the antenna plate 2 rotates in the first direction, the second detection unit detects whether the antenna plate 2 is rotated back to the initial position. The first detection unit detects whether the antenna plate 2 is in the initial position, which is equivalent to calibrating the position of the antenna plate 2, so that it can ensure that the antenna plate 2 rotates with the initial position as the starting point and stops rotating when it rotates to the initial position, that is, the signal strength received by the antenna plate 2 in different directions is detected in an all-round manner, so that the acquired preset signal strength is close to the actual strongest signal strength, or the same as the actual strongest signal strength. In addition, since the first detection unit and the second detection unit can detect whether the antenna plate 2 is in the initial position, even if the motor 5 loses power abnormally, after the motor 5 is powered on again, it is only necessary to control the antenna plate 2 to continue to rotate arbitrarily at the current position to return to the initial position, that is, the rotation of the antenna plate 2 is closed-loop controlled.

[0070] refer to Fig.10 as well as Fig. 9 , the first detection unit includes: a detection resistor R3, a first single-power-supply operational amplifier 103 and a first analog-to-digital converter ADC1, and the second detection unit includes: a detection resistor R3, a second single-power-supply operational amplifier 104 and a second analog-to-digital converter ADC2. Among them, the connection relationship and working principle between the detection resistor R3 and the first single-power-supply operational amplifier 103, the second single-power-supply operational amplifier 104, the first analog-to-digital converter ADC1 and the second analog-to-digital converter ADC2 can be referred to the previous application embodiment, and will not be repeated below.

[0071] Specifically, the first detection unit controls the antenna board 2 (reference Figure 1 ) rotates in the second direction, and the second detection unit controls the antenna plate 2 to rotate in the first direction. When the control unit controls the antenna plate 2 to rotate in the second direction before controlling the antenna plate 2 to rotate in the first direction, if the first detection unit detects a stalled current at this time, it means that the antenna plate 2 is at the initial position at this time, and the position calibration of the antenna plate 2 is completed. After the first detection unit detects the stalled current, the control unit controls the antenna plate 2 to rotate in the first direction, and the second detection unit is started at this time. After the second detection unit detects the stalled current, it is determined that the antenna plate 2 has rotated to the initial position. At this time, the control unit controls the antenna plate 2 to rotate in the second direction, and when it reaches the first position, the control unit controls the antenna plate 2 to stop rotating.

[0072] In some embodiments, the control unit can also detect the motor 5 (refer to Figure 1 ) is faulty. When the motor 5 fails, the motor 5 will generate a stall current. Therefore, when the control unit detects the stall current, it is possible that the motor 5 has failed or the antenna plate 2 has rotated to the initial position. When the antenna plate 2 rotates to the initial position, the rotating shaft 6 (reference Figure 1 ) rotates 360°, if the motor 5 fails, the rotation angle of the rotating shaft 6 will be less than 360°. Therefore, by the rotation angle of the rotating shaft 6 recorded by the control unit, it can be determined whether the motor 5 fails.

[0073] In the antenna scanning method provided in the above embodiment, the control module controls the antenna plate 2 to rotate along the first direction, and obtains the first position of the antenna plate 2 when receiving the preset signal strength, and the control module also controls the antenna plate 2 to rotate in the second direction when detecting that the antenna plate 2 rotates to the initial position, so that the antenna plate 2 rotates to the first position. In addition, the limit component 3 is set so that the antenna plate 2 stops rotating after rotating to the initial position. Therefore, it can be ensured that each time the control module controls the antenna plate 2 to rotate in the second direction, it starts to rotate from the initial position, that is, closed-loop control is achieved, and it can be ensured that each time the control module obtains the first position, it can control the antenna plate 2 to rotate in the second direction with the same initial position as the starting point, so that the position to which the antenna plate 2 actually rotates is consistent with the first position, so that the antenna plate 2 can receive a signal with a preset signal strength.

[0074] Accordingly, an embodiment of the present application further provides a terminal device, including the antenna assembly provided in the above embodiment and a device body, wherein the antenna assembly is arranged in the device body. The device body includes a processor, a memory, a communication interface and a communication bus, and the processor, the communication interface memory communicate with each other through the communication bus.

[0075] In some embodiments, the processor may be a central processing unit (CPU), a graphics processing unit (GPU), or a neural-network processing unit (NPU). In other embodiments, the processor may also integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly processes wireless communications.

[0076] In some embodiments, the memory may be an internal storage unit of the terminal device. In other embodiments, the memory may also be an external storage device. In still other embodiments, the memory may also include both an internal storage unit of the terminal device and an external storage device. The communication interface and the communication bus connect the various parts of the entire terminal device, and execute or execute the software programs and / or modules stored in the memory, and call the data stored in the memory to execute various functions of the terminal device and process data, thereby operating the terminal device.

[0077] Those skilled in the art can understand that the above-mentioned embodiments are specific examples for implementing the present application, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present application. Any person skilled in the art can make their own changes and modifications without departing from the spirit and scope of the present application, so the scope of protection of the present application shall be based on the scope defined in the claims.

Claims

1. An antenna assembly, characterized in that: The invention comprises a housing, wherein the housing is provided with: A main board and an antenna board connected to the main board, wherein the antenna board is rotatable relative to the main board, and the main board is in communication connection with the antenna board; a limiting component, wherein the limiting component is used to limit the antenna board after the antenna board moves to the initial position; a control module, wherein the control module is used to control the antenna board to rotate in a first direction or a second direction, and the control module is further used to control the antenna board to rotate in the first direction until the antenna board rotates to the initial position, and obtain the signal strength received when the antenna board rotates to different positions, and the control module is further used to control the antenna board to rotate in the second direction after detecting that the antenna board rotates to the initial position so that the antenna board rotates to the first position, and the first position corresponds to a preset signal strength, wherein the first direction is opposite to the second direction, and the first direction is either a clockwise direction or a counterclockwise direction; The limiting component includes an L-shaped component and a base, the base is fixed in the housing, the base has a receiving slot, and mounting slots are provided on both sides of the receiving slot. The L-shaped component includes two limiting arms, and limiting protrusions are provided on both sides of the limiting arm. The limiting protrusions are inserted into the mounting slots, and the limiting protrusions are used to rotate relative to the mounting slots to drive the limiting arms to rotate relative to the receiving slots. The limiting arms are used to stop rotating and abut against one side of the antenna board after the antenna board rotates to the initial position; The length L of the mounting groove is d+2y+a, wherein d is the diameter of the limiting protrusion, y is the diameter of the limiting arm, and a is the thickness of the antenna plate.

2. The antenna assembly according to claim 1, characterized in that: The control module includes: a motor and a control unit, the motor is embedded on the main board, the motor has a rotating shaft, one end of the rotating shaft away from the motor is connected to the antenna board, the control unit is electrically connected to the motor, and the control unit controls the rotating shaft to rotate in a first direction or in a second direction to drive the antenna board to rotate.

3. The antenna assembly according to claim 2, characterized in that: The control unit includes: a 5G module and an H-bridge control circuit, the 5G module is communicatively connected to the H-bridge control circuit, and the H-bridge control circuit is electrically connected to the motor, the 5G module controls the conduction time and current direction of the H-bridge control circuit to adjust the rotation angle and rotation direction of the rotating shaft, and the 5G module is also used to detect whether the antenna board reaches the initial position.

4. The antenna assembly according to claim 3, characterized in that: The 5G module includes: A detection unit, the detection unit is used to detect the on-current of the H-bridge control circuit; A judgment unit, wherein the judgment unit is used to judge that the antenna plate rotates back to the initial position after the detection unit detects that the conduction current reaches a preset current.

5. The antenna assembly according to claim 3, characterized in that: The 5G module includes: A rotation control unit, the rotation control unit is used to control the conduction time of the H-bridge control circuit to adjust the rotation angle of the rotation shaft; a signal detection unit, the signal detection unit being communicatively connected to the rotation control unit, the signal detection unit being used to detect the strength of the signal received when the antenna plate rotates to different positions during the rotation of the antenna plate; a recording unit, the recording unit being communicatively connected to the rotation control unit and the signal detection unit, the recording unit being used to record the rotation angle of the rotation shaft and the signal strength corresponding to the rotation angle; A comparison unit, the comparison unit is communicatively connected with the signal detection unit and the recording unit, and the comparison unit is used to compare the multiple signal strengths recorded by the recording unit and filter out the preset signal strength after the detection unit detects that the antenna plate has rotated to the initial position.

6. An antenna scanning method, applied to the antenna assembly according to any one of claims 1 to 5, characterized in that: include: The control module controls the antenna board to rotate in a first direction until the antenna board rotates to an initial position, and obtains the signal strength received when the antenna board rotates to different positions; The limiting component limits the antenna board after the antenna board moves to the initial position; After detecting that the antenna board rotates back to the initial position, the control module controls the antenna board to rotate in a second direction so that the antenna board rotates to a first position, wherein the first position corresponds to a preset signal strength, wherein the first direction is opposite to the second direction, and the first direction is either clockwise or counterclockwise.

7. The antenna scanning method according to claim 6, characterized in that: The control module includes: a first detection unit and a second detection unit, and also includes: before the antenna plate rotates in the first direction, the first detection unit detects whether the antenna plate is located in the initial position; after the antenna plate rotates in the first direction, the second detection unit detects whether the antenna plate turns back to the initial position.

8. A terminal device, characterized in that: include: The antenna assembly and device body according to any one of claims 1 to 5, wherein the antenna assembly is arranged in the device body.

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