Control method, device, and readable storage medium

Abstract

The present application relates to the technical field of drive, and discloses a control method, a device, and a readable storage medium. In the method, when detecting that at least one actuating wire of an SMA motor breaks, by means of at least some actuating wires (hereinafter referred to as target actuating wires) among unbroken actuating wires, an electronic device can control a carrier of the SMA motor to move relative to a fixed part, wherein the direction of a resultant force of the target actuating wires acting on the carrier is the same as the direction of the carrier being driven to move. Thus, even if there are actuating wires in the SMA motor in the electronic device breaking, the electronic device can still drive the carrier by means of the unbroken actuating wires to move.

Description

Control method, device and readable storage medium

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on August 29, 2023, with application number 202311103420.8 and application name “Control Method, Device and Readable Storage Medium”, the entire contents of which are incorporated by reference into this application.

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on September 8, 2023, with application number 202311163497.4 and application name “Control Method, Device and Readable Storage Medium”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of drive technology, and in particular to a control method, device, and readable storage medium. Background Art

[0004] A shape memory alloy (SMA) motor refers to a motor that uses shape memory alloy as a driving material. In an SMA motor, the fixed portion and the carrier of the SMA motor are connected by a plurality of actuating wires made of multiple shape memory alloys. The electronic device can control the movement of the carrier relative to the fixed portion by controlling the contraction of each actuating wire. For example, in a camera module of an electronic device, the lens in the camera is usually set on the carrier of the SMA motor. The electronic device can control the contraction of the actuating wire in the SMA motor to control the movement of the lens along the optical axis of the lens to achieve the focus of the camera, or control the movement of the lens in a plane perpendicular to the optical axis of the lens to achieve the anti-shake function of the camera.

[0005] Generally speaking, in an SMA motor, the movement of a carrier relative to a fixed portion in a particular direction is achieved by the contraction of multiple actuating wires connected end to end. If one or more of these actuating wires become disconnected (e.g., broken or unable to contract properly), the SMA motor will be unable to control the carrier's movement in that direction.

[0006] Summary of the Invention

[0007] In view of this, the present application provides a control method, device and readable storage medium.

[0008] In a first aspect, an embodiment of the present application provides a control method for an electronic device, wherein the electronic device includes a shape memory alloy motor, wherein a fixed portion and a carrier of the shape memory alloy motor are connected via N actuating wires, wherein one end of the actuating wire is connected to the carrier and the other end is connected to the fixed portion, and when the actuating wire contracts, the carrier is driven to move relative to the fixed portion. The method includes: detecting a first operation of a user, wherein the first operation is used to instruct the carrier to move in a first direction; when L actuating wires among the N actuating wires are disconnected, and K actuating wires among the NL actuating wires that are not disconnected contract, the direction of the resultant force acting on the carrier is the same as the first direction, and the K actuating wires are used to drive the carrier to move in the first direction.

[0009] That is to say, when the electronic device needs to control the carrier to move along the first direction, if L of the N actuating wires are disconnected, and there are K actuating wires among the NL actuating wires that are not disconnected, and the direction of the resultant force acting on the carrier when the actuating wires contract is the same as the first direction, the electronic device can still use the K actuating wires to drive the carrier to move along the first direction.

[0010] In a possible implementation of the first aspect, the shape memory alloy motor is disposed in a camera of an electronic device, and a lens of the camera is disposed on a carrier.

[0011] In this way, since the movement of the carrier can drive the movement of the lens, even if the actuating wire in the shape memory alloy motor is disconnected, the electronic device can still control the movement of the lens along the first direction, so that the electronic device can at least retain at least some of the focusing function and the anti-shake function.

[0012] In a possible implementation of the first aspect, the N actuating wires include P actuating wires whose components of the force acting on the carrier in the first reference direction during contraction are directed in a positive direction of the first reference direction, and NP actuating wires whose components of the force acting on the carrier in the first reference direction during contraction are directed in a negative direction of the first reference direction, wherein the first reference direction is the same as the optical axis direction of the lens; and K actuating wires are used to drive the carrier to move along the first direction, comprising: selecting K actuating wires from the NL actuating wires that have not been disconnected, and using the K actuating wires to drive the carrier to move along the first direction when the following conditions are met: at least two actuating wires among the P actuating wires are not disconnected, and when all the undisconnected actuating wires among the P actuating wires are contracted, the direction of the resultant force acting on the carrier is along the negative direction of the first reference direction; and at least two actuating wires among the NP actuating wires are not disconnected, and when all the undisconnected actuating wires among the NP actuating wires are contracted, the direction of the resultant force acting on the carrier is along the positive direction of the first reference direction.

[0013] For example, the P actuation wires may be the actuation wires in the positive-tension actuation wire group hereinafter, and the NP actuation wires may be the actuation wires in the negative-tension actuation wire group hereinafter.

[0014] That is, in some implementations, the electronic device may use K actuating wires to drive the carrier to move along the first direction only when the following wire breakage control condition is satisfied.

[0015] In a possible implementation of the first aspect, the shape memory alloy motor includes a first reference surface, a second reference surface, a third reference surface and a fourth reference surface parallel to the first reference direction, wherein the first reference surface and the third reference surface are symmetrically arranged relative to the center of the carrier and parallel to the second reference direction, the second reference surface and the fourth reference surface are symmetrically arranged relative to the center of the carrier and parallel to the third reference direction, and the first reference direction, the second reference direction and the third reference direction are perpendicular to each other; the P actuation lines include a first actuation line, a third actuation line, a fifth actuation line and a seventh actuation line respectively arranged on the first reference surface, the second reference surface, the third reference surface and the fourth reference surface, and the NP actuation lines include a second actuation line, a fourth actuation line, a sixth actuation line and an eighth actuation line respectively arranged on the first reference surface, the second reference surface, the third reference surface and the fourth reference surface; wherein the force acting on the carrier when the first actuation line contracts includes a component along the negative direction of the first reference direction and a component along the negative direction of the second reference direction; the force acting on the carrier when the second actuation line contracts includes a component along the first reference surface a component in the positive direction of the reference direction and a component in the negative direction of the second reference direction; the force acting on the carrier when the third actuating line contracts includes a component in the negative direction of the first reference direction and a component in the positive direction of the third reference direction; the force acting on the carrier when the fourth actuating line contracts includes a component in the positive direction of the first reference direction and a component in the positive direction of the third reference direction; the force acting on the carrier when the fifth actuating line contracts includes a component in the negative direction of the first reference direction and a component in the positive direction of the second reference direction; the force acting on the carrier when the sixth actuating line contracts includes a component in the positive direction of the first reference direction and a component in the positive direction of the second reference direction; the force acting on the carrier when the seventh actuating line contracts includes a component in the negative direction of the first reference direction and a component in the negative direction of the third reference direction; the force acting on the carrier when the eighth actuating line contracts includes a component in the positive direction of the first reference direction and a component in the negative direction of the third reference direction.

[0016] That is, when two to four of the eight actuating wires of the shape memory alloy are disconnected, the electronic device can select at least some of the remaining actuating wires to control the movement of the carrier along the first direction.

[0017] Exemplarily, the first reference direction, the second reference direction and the third reference direction can be the Z direction, the Y direction and the X direction below, respectively; the first reference surface, the second reference surface, the third reference surface and the fourth reference surface can be the left side surface, the front side surface, the right side surface and the rear side surface below, respectively; the first to eighth actuation lines can be the actuation lines L1 to L8 below, respectively.

[0018] In a possible implementation of the first aspect, the selecting K actuation lines from the NL actuation lines that have not been disconnected includes: when at least one of the first actuation line and the fifth actuation line is disconnected, and at least one of the second actuation line and the sixth actuation line is disconnected, determining that at least some of the third actuation line, the fourth actuation line, the seventh actuation line, and the eighth actuation line are the K actuation lines; or when at least one of the first actuation line and the fifth actuation line is disconnected, and at least one of the fourth actuation line and the eighth actuation line is disconnected, determining that the second actuation line, the third actuation line, the sixth actuation line, the eighth ... At least some of the seven actuation lines are K actuation lines; or when at least one of the third actuation line and the seventh actuation line is disconnected, and at least one of the second actuation line and the sixth actuation line is disconnected, at least some of the actuation lines among the first actuation line, the fourth actuation line, the fifth actuation line, and the eighth actuation line are determined to be K actuation lines; or when at least one of the third actuation line and the seventh actuation line is disconnected, and at least one of the fourth actuation line and the eighth actuation line is disconnected, at least some of the actuation lines among the first actuation line, the second actuation line, the fifth actuation line, and the sixth actuation line are determined to be K actuation lines.

[0019] In a possible implementation of the first aspect, when at least one of the first actuation line and the fifth actuation line is disconnected, and at least one of the second actuation line and the sixth actuation line is disconnected, determining at least some of the third actuation line, the fourth actuation line, the seventh actuation line, and the eighth actuation line as K actuation lines includes: corresponding to the first direction being a positive direction of the first reference direction, determining the fourth actuation line and the eighth actuation line as K actuation lines; or corresponding to the first direction being a negative direction of the first reference direction, determining the third actuation line and the seventh actuation line as K actuation lines; or Corresponding to the first direction being the positive direction of the third reference direction, the third actuation line and the fourth actuation line are determined to be K actuation lines; or corresponding to the first direction being the negative direction of the third reference direction, the seventh actuation line and the eighth actuation line are determined to be K actuation lines; or corresponding to the first direction being the positive direction of the second reference direction and the sixth actuation line being not disconnected, the third actuation line, the sixth actuation line and the seventh actuation line are determined to be K actuation lines; or corresponding to the first direction being the negative direction of the second reference direction and the second actuation line being not disconnected, the second actuation line, the third actuation line and the seventh actuation line are determined to be K actuation lines.

[0020] In a possible implementation of the first aspect, when at least one of the first actuation line and the fifth actuation line is disconnected, and at least one of the fourth actuation line and the eighth actuation line is disconnected, determining at least some of the second actuation line, the third actuation line, the sixth actuation line, and the seventh actuation line as K actuation lines includes: corresponding to the first direction being the positive direction of the first reference direction, determining the second actuation line and the sixth actuation line as K actuation lines; or corresponding to the first direction being the negative direction of the first reference direction, determining the third actuation line and the seventh actuation line as K actuation lines. ; or corresponding to the first direction being the positive direction of the third reference direction, the second actuation line, the third actuation line and the sixth actuation line are determined to be K actuation lines; or corresponding to the first direction being the negative direction of the third reference direction, the second actuation line, the sixth actuation line and the seventh actuation line are determined to be K actuation lines; or corresponding to the first direction being the positive direction of the second reference direction, the third actuation line, the sixth actuation line and the seventh actuation line are determined to be K actuation lines; or corresponding to the first direction being the negative direction of the second reference direction, the second actuation line, the third actuation line and the seventh actuation line are determined to be K actuation lines.

[0021] In a possible implementation of the above-mentioned first aspect, the above-mentioned first operation includes any one of the following operations: the operation of the user starting the electronic device; the operation of the user adjusting the focus of the camera; the operation of the user moving the electronic device; the operation of the user starting the camera.

[0022] In a possible implementation of the first aspect above, the above-mentioned detection of the first operation of the user includes: when the first operation is an operation of the user starting the electronic device, determining the first direction based on the current position of the carrier and the preset position of the carrier; when the first operation is an operation of the user adjusting the focal length of the camera, determining the first direction based on the current focal length of the camera and the focal length set by the user; when the first operation is an operation of the user moving the electronic device, determining the first direction according to the second direction in which the user moves the electronic device; when the first operation is an operation of the user starting the camera, determining the first direction based on the focal length of the image captured by the camera.

[0023] In a possible implementation of the first aspect, K is less than or equal to 4.

[0024] That is, the electronic device can control the carrier to move along the first direction based on at most four actuation wires.

[0025] In a possible implementation of the first aspect, the method further includes: when none of the N actuating wires is disconnected, using M actuating wires among the N actuating wires to drive the carrier to move along the first direction, wherein the M actuating wires include at least one actuating wire among the L actuating wires.

[0026] In a second aspect, an embodiment of the present application provides a readable storage medium, which includes instructions. When the instructions are executed by an electronic device, the electronic device implements the control method provided by the above-mentioned first aspect and any possible implementation of the above-mentioned first aspect.

[0027] In a third aspect, an embodiment of the present application provides an electronic device, comprising: a shape memory alloy motor; a memory for storing instructions; and a processor for executing instructions so that the electronic device controls the shape memory alloy motor through the control method provided by the first aspect and any possible implementation of the first aspect.

[0028] In a fourth aspect, an embodiment of the present application provides a program product, which, when running on an electronic device, enables the electronic device to implement the control method provided in the first aspect and any possible implementation of the first aspect.

[0029] It should be understood that the technical effects of the above-mentioned second to fourth aspects can refer to the description of the above-mentioned first direction and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG1A shows a schematic diagram of a camera module in a mobile phone 1 according to some embodiments of the present application;

[0031] FIG1B shows a cross-sectional view of the area where the camera 5 is located along the AA direction according to some embodiments of the present application;

[0032] FIG2 is a schematic diagram showing the connection relationship between the fixing portion 51, the carrier 53, and the actuating wire assembly 54 according to some embodiments of the present application;

[0033] FIG3 is a schematic diagram showing a method of controlling the carrier 53 to move along the positive direction of the Z axis according to some embodiments of the present application;

[0034] FIG4 is a schematic diagram showing a situation where an SMA actuating wire is disconnected according to some embodiments of the present application;

[0035] FIG5A is a schematic diagram showing a method of controlling a carrier 53 to move along a positive direction of the Z axis when an actuation line L8 and / or an actuation line L4 is disconnected according to some embodiments of the present application;

[0036] FIG5B is a schematic diagram showing a method of controlling the negative movement of the carrier 53 along the Z-axis when the actuation line L8 and / or the actuation line L4 are disconnected according to some embodiments of the present application;

[0037] FIG6 is a schematic diagram showing a method of controlling the carrier 53 to move along the negative direction of the Y axis when the actuating line L8 and / or the actuating line L4 are disconnected according to some embodiments of the present application;

[0038] FIG7 is a schematic diagram showing a method of controlling the carrier 53 to move along the positive direction of the Y axis when the actuating line L8 and / or the actuating line L4 are disconnected according to some embodiments of the present application;

[0039] FIG8A is a schematic diagram showing a method of controlling the carrier 53 to move along the positive direction of the X-axis when the actuating line L8 and / or the actuating line L4 are disconnected according to some embodiments of the present application;

[0040] FIG8B is a schematic diagram showing a method of controlling the carrier 53 to move along the negative direction of the X-axis when the actuating line L8 and / or the actuating line L4 are disconnected according to some embodiments of the present application;

[0041] FIG9A is a schematic diagram illustrating controlling the carrier 53 to move along the positive direction of the Z axis when at least one of the actuating lines L8 and L4 is disconnected and at least one of the actuating lines L7 and L3 is disconnected, according to some embodiments of the present application;

[0042] FIG9B is a schematic diagram illustrating controlling the carrier 53 to move along the negative Z-axis direction when at least one of the actuating lines L8 and L4 is disconnected and at least one of the actuating lines L7 and L3 is disconnected, according to some embodiments of the present application;

[0043] FIG10A is a schematic diagram illustrating controlling the carrier 53 to move along the positive direction of the Z axis when at least one of the actuating lines L8 and L4 is disconnected and at least one of the actuating lines L5 and L1 is disconnected, according to some embodiments of the present application;

[0044] FIG10B is a schematic diagram illustrating controlling the carrier 53 to move along the negative Z-axis direction when at least one of the actuating lines L8 and L4 is disconnected and at least one of the actuating lines L5 and L1 is disconnected, according to some embodiments of the present application;

[0045] FIG10C is a schematic diagram illustrating controlling the carrier 53 to move along the positive direction of the Y-axis when at least one of the actuating lines L8 and L4 is disconnected and at least one of the actuating lines L5 and L1 is disconnected, according to some embodiments of the present application;

[0046] FIG10D is a schematic diagram illustrating controlling the carrier 53 to move along the negative direction of the Y-axis when at least one of the actuating lines L8 and L4 is disconnected and at least one of the actuating lines L5 and L1 is disconnected, according to some embodiments of the present application;

[0047] FIG11 is a schematic flow chart showing a control method according to some embodiments of the present application;

[0048] FIG12 shows a schematic structural diagram of a mobile phone 1 according to some embodiments of the present application. DETAILED DESCRIPTION

[0049] Illustrative embodiments of the present application include, but are not limited to, control methods, devices, and readable storage media.

[0050] It should be understood that the control method provided in the embodiments of the present application is applicable to any scenario in which an SMA motor is controlled. For ease of description, the following describes the technical solution of the present application using an SMA motor in a camera as an example.

[0051] It should be understood that the control methods provided in the embodiments of this application are applicable to any electronic device equipped with an SMA motor or capable of controlling an SMA motor, including but not limited to mobile phones, tablet computers, wearable devices (such as smart watches and smart bands), smart home devices (such as smart TVs and smart speakers), IoT devices, pan / tilt cameras, cameras, and the like. For ease of description, the following embodiments use a mobile phone as an example to introduce the technical solutions of this application.

[0052] FIG1A shows a schematic diagram of a camera module in a mobile phone 1 according to some embodiments of the present application.

[0053] As shown in FIG1 , a mobile phone 1 includes a camera module 2 , which includes four cameras (eg, camera 3 , camera 4 , camera 5 , and camera 6 ).

[0054] It should be understood that an SMA motor is configured in one or more of the cameras 3, 4, 5, and 6. The following description will take the camera 5 configured with the SMA motor as an example.

[0055] FIG1B shows a schematic cross-sectional view of the area where the camera 5 is located along the AA direction according to some embodiments of the present application.

[0056] As shown in FIG1B , the camera 5 includes an image sensor 12 and an SMA motor 51 . The SMA motor 51 includes a fixing portion 52 and a carrier 53 on which a lens is mounted. The fixing portion 52 and the carrier 53 are connected via an actuating wire set 54 .

[0057] The image sensor 12 , the carrier 53 , and the housing 13 of the mobile phone 1 are sequentially arranged at intervals along the optical axis of the camera 5 (the Z direction shown in FIG. 1B ).

[0058] The fixing portion 52 and the image sensor 12 are fixed on the circuit board 11. In other words, the fixing portion 52 and the image sensor 12 remain relatively fixed.

[0059] The carrier 53 can move along the optical axis of the camera 5, or in a plane perpendicular to the optical axis (such as the XY plane shown in FIG. 1B ), or in other directions through motion synthesis.

[0060] Mobile phone 1 can control the contraction of the actuating wires in actuating wire assembly 54 to control the movement of carrier 53 along the optical axis of camera 5, thereby controlling the movement of the lens disposed on carrier 53 along the optical axis of camera 5 to achieve the focusing function of camera 5. Mobile phone 1 can also control the contraction of the actuating wires in actuating wire assembly 54 to control the movement of carrier 53 in a plane perpendicular to the optical axis of camera 5 to achieve the anti-shake function of camera 5.

[0061] Furthermore, FIG. 2 shows a schematic diagram of the connection relationship among the fixing portion 51 , the carrier 53 , and the actuating wire assembly 54 according to some embodiments of the present application.

[0062] As shown in FIG2 , actuation wire assembly 54 includes eight independent actuation wires, namely, actuation wire L1, actuation wire L2, actuation wire L3, actuation wire L4, actuation wire L5, actuation wire L6, actuation wire L7, and actuation wire L8. Each actuation wire in actuation wire assembly 54 has one end connected to a fixed portion 51 and the other end connected to a carrier 53. Each actuation wire in actuation wire assembly 54 can contract when its temperature exceeds a threshold (e.g., when a voltage or current is applied across the wire to raise its temperature above the threshold), thereby pulling the carrier 53 to move.

[0063] For example, in some embodiments, the carrier 53 can be approximately viewed as a rectangular parallelepiped. For ease of description, a coordinate system XYZ is established as shown in Figure 2, where the Z direction is the optical axis direction of the camera 5, and the XY plane where the X-axis and Y-axis lie is perpendicular to the Z-axis. Furthermore, hereinafter, the two sides of the carrier 53 perpendicular to the X-axis are referred to as the left side and right side, respectively; the two sides of the carrier 53 perpendicular to the Y-axis are referred to as the front side and rear side, and the two sides of the carrier 53 perpendicular to the Z-axis are referred to as the top and bottom surfaces, respectively.

[0064] In some embodiments, two actuation lines may be provided on each of the four sides of the carrier 53, and the two actuation lines provided on each side are arranged crosswise. Specifically:

[0065] In some embodiments, actuation lines L1 and L2 are disposed on the left side of carrier 53. One end of L1 is connected to connection point A1 on fixed portion 51, and the other end is connected to connection point A2 on carrier 53. Actuation line L2 has one end connected to connection point B1 on fixed portion 51, and the other end is connected to connection point B2 on carrier 53. Connection points A1, B1, A2, and B2 are respectively located near the four vertices of the left side. Connection points A1 and B1 are arranged axially along the Z axis, with connection point A1 located near the bottom surface of carrier 53. Connection points A2 and B2 are arranged axially along the Z axis, with connection point B2 located near the bottom surface of carrier 53. When actuation line L1 contracts, the force acting on carrier 53 includes a component along the negative Z axis and a component along the negative Y axis. When actuation line L2 contracts, the force acting on carrier 53 includes a component along the positive Z axis and a component along the negative Y axis.

[0066] In some embodiments, actuation lines L3 and L4 are disposed on the front side of the carrier 53. One end of L3 is connected to connection point C1 on the fixed portion 51, and the other end is connected to connection point C2 on the carrier 53. One end of actuation line L4 is connected to connection point D1 on the fixed portion 51, and the other end is connected to connection point D2 on the carrier 53. Connection points C1, D1, C2, and D2 are respectively located near the four vertices of the front side. Connection points C1 and D1 are arranged axially along the Z axis, with connection point C1 located near the bottom surface of the carrier 53. Connection points C2 and D2 are arranged axially along the Z axis, with connection point D2 located near the bottom surface of the carrier 53. When actuation line L3 contracts, the force acting on the carrier 53 includes a component along the negative Z axis and a component along the positive X axis. When actuation line L4 contracts, the force acting on the carrier 53 includes a component along the positive Z axis and a component along the positive X axis. Furthermore, the connection points C2 and D2 are located near the same side of the carrier 53 as are the connection points A2 and B2.

[0067] In some embodiments, actuation lines L5 and L6 are disposed on the right side of the carrier 53. One end of L5 is connected to connection point E1 on the fixed portion 51, and the other end is connected to connection point E2 on the carrier 53. One end of actuation line L6 is connected to connection point F1 on the fixed portion 51, and the other end is connected to connection point F2 on the carrier 53. Connection points E1, F1, E2, and F2 are respectively located near the four vertices of the right side. Connection points E1 and F1 are arranged axially along the Z axis, with connection point E1 located near the bottom surface of the carrier 53. Connection points E2 and F2 are arranged axially along the Z axis, with connection point F2 located near the bottom surface of the carrier 53. When actuation line L5 contracts, the force acting on the carrier 53 includes a component along the negative Z axis and a component along the positive Y axis. When actuation line L6 contracts, the force acting on the carrier 53 includes a component along the positive Z axis and a component along the positive Y axis. Furthermore, the connection points E1 and F1 are located near the same side of the carrier 53 as are the connection points C1 and D1.

[0068] In some embodiments, actuation lines L7 and L8 are disposed on the rear side of the carrier 53. One end of L7 is connected to connection point G1 on the fixed portion 51, and the other end is connected to connection point G2 on the carrier 53. One end of actuation line L8 is connected to connection point H1 on the fixed portion 51, and the other end is connected to connection point H2 on the carrier 53. Connection points G1, H1, G2, and H2 are respectively located near the four vertices of the rear side. Connection points G1 and H1 are arranged axially along the Z axis, with connection point G1 located near the bottom surface of the carrier 53. Connection points G2 and H2 are arranged axially along the Z axis, with connection point H2 located near the bottom surface of the carrier 53. When actuation line L7 contracts, the force acting on the carrier 53 includes a component along the negative Z axis and a component along the negative X axis. When actuation line L8 contracts, the force acting on the carrier 53 includes a component along the positive Z axis and a component along the negative X axis. Furthermore, the connection points G2 and H2 are located near the same side of the carrier 53 as are the connection points E2 and F2.

[0069] In some embodiments, the connection structure further includes an elastic device that can provide restoring force to the carrier in six degrees of freedom. Under the action of this elastic device, actuating wires that are not contracted or not being applied with current or voltage can be stretched by the elastic device or other actuating wires to maintain force balance on the carrier.

[0070] In some embodiments, when the actual structure of the carrier 53 is not a rectangular parallelepiped, a first reference plane, a second reference plane, a third reference plane, and a fourth reference plane parallel to the Z axis can be established, wherein the first reference plane and the third reference plane are symmetrically arranged relative to the center of the carrier 53 and parallel to the Y axis, and the second reference plane and the fourth reference plane are symmetrically arranged relative to the center of the carrier and parallel to the X axis. In this way, the first reference plane, the second reference plane, the third reference plane, and the fourth reference plane can form the four faces of a rectangular parallelepiped (equivalent to the aforementioned left side, front side, right side, and rear side, respectively). In this case, the actuation lines L1 to L8 can be arranged on the first reference plane, the second reference plane, the third reference plane, and the fourth reference plane. The arrangement of the actuation lines L1 to L8 on the first reference plane, the second reference plane, the third reference plane, and the fourth reference plane can refer to the arrangement of the actuation lines L1 to L8 on the left side, the front side, the right side, and the rear side, and will not be repeated here.

[0071] It should be understood that the connection structure shown in FIG2 is only an example. In some embodiments, the left side, right side, front side, and rear side mentioned above may be virtual planes rather than actual surfaces, and are not limited here.

[0072] Based on the connection structure shown in FIG2 , the mobile phone 1 can control the contraction of each actuating wire by inputting different control signals to each actuating wire (e.g., applying different voltages or currents or control signals to the actuating wire, or not applying voltage or current), thereby pulling the carrier 53 to move. For example, the carrier 53 can be pulled to move along the Z-axis to control the focus of the camera 5, or pulled to move the carrier 53 in a plane perpendicular to the Z-axis to control the anti-shake function of the camera 5, or pulled to move the carrier 53 in other directions to adjust shooting parameters, etc.

[0073] For example, referring to FIG3 , the mobile phone 1 can control the actuating wires L2, L4, L6, and L8 to contract at the same amplitude to control the carrier 53 to move along the positive direction of the Z axis. When the actuating wires L2, L4, L6, and L8 contract at the same amplitude, the components of the forces exerted on the carrier 53 by the actuating wires L2 and L6 in the Y direction cancel each other out, and the components of the forces exerted on the carrier 53 by the actuating wires L4 and L8 in the X direction cancel each other out. In other words, the resultant force F exerted on the carrier 53 by the actuating wires L2, L4, L6, and L8 is equal to 0. Z The direction is along the positive direction of the Z axis. Since the connection points B1, D1, F1, and H1 are fixed to the fixing portion 52, the connection points B2, D2, F2, and H2 will move along the positive direction of the Z axis under the action of Fz, thereby causing the carrier 53 to move along the positive direction of the Z axis.

[0074] However, if one or more of the actuating lines L2, L4, L6, and L8 are disconnected, and if they are still controlled to contract at the same rate, the direction of the combined force exerted by the actuating lines L2, L4, L6, and L8 on the carrier 53 will not be along the Z-axis. For example, referring to FIG4 , if the actuating line L8 is disconnected, the actuating lines L2, L4, and L6 contract at the same rate, causing the combined force exerted by the actuating lines L2, L4, and L6 on the carrier 53 to have a component along the positive X-axis direction (i.e., the component of the force exerted by the actuating line L3 on the carrier 53 in the positive X-axis direction). This will result in the mobile phone 1 being unable to accurately control the movement of the carrier 53 along the Z-axis, causing the focus and anti-shake functions of the camera 5 to fail.

[0075] In order to ensure that the electronic device can still accurately control the movement of the carrier in the SMA motor when the actuating wires in the SMA motor are disconnected, an embodiment of the present application provides a control method. When the actuating wires in the SMA motor are not disconnected and the carrier needs to be controlled to move along the first direction, the electronic device can control the carrier in the SMA motor to move relative to the fixed part along the first direction through N actuating wires. When L (L≥1) actuating wires among the N actuating wires are disconnected and the carrier needs to be controlled to move along the first direction, the electronic device can select K (K≥2) actuating wires (hereinafter referred to as target actuating wires) from the undisconnected actuating wires, the direction of the resultant force acting on the carrier when contracted being along the first direction. Then, the electronic device can control the carrier of the SMA motor to move relative to the fixed part along the first direction based on the selected K actuating wires.

[0076] In this way, even if an actuating wire in the SMA motor in the electronic device is disconnected, if there is still a target actuating wire whose direction of the resultant force acting on the carrier during contraction is the same as the first direction, the electronic device can also drive the carrier to move along the first direction through the target actuating wire.

[0077] In some embodiments, the electronic device may determine the first direction of movement of the carrier in the SMA motor of the electronic device in response to a first operation by the user.

[0078] Exemplarily, the first operation may include an operation of a user starting the electronic device, an operation of a user starting a camera (such as starting a camera application or other application that requires calling a camera), an operation of a user moving the electronic device, an operation of a user adjusting the focus of the electronic device, etc.

[0079] For example, in response to a user initiating an operation of the electronic device, the electronic device may determine the first direction based on a preset target position of the carrier relative to the fixed portion and the current position of the carrier, and based on the current position and the target position. For example, if the electronic device presets the position of the carrier relative to the fixed portion as the first position, and the current position of the carrier as the second position, the direction from the second position to the first position may be the first direction.

[0080] For another example, the electronic device may determine a desired shooting focal length based on an image captured by the camera in response to a user's activation of the camera, and determine the first direction based on the determined focal length and the current focal length of the camera. For example, if the electronic device determines, through an autofocus algorithm, that the position of the carrier corresponding to the focal length of the image captured by the camera is the first position, and the current position of the carrier is the second position, the direction from the second position to the first position may be the first direction.

[0081] For another example, the electronic device may determine the first direction of the moving carrier in response to a user adjusting the camera focus, based on the focus adjustment method (increasing or decreasing the focus). For example, if the carrier position corresponding to the user-set focus is the first position, and the current position of the carrier is the second position, the direction from the second position to the first position may be the first direction.

[0082] For another example, in response to the user moving the electronic device, the electronic device may determine a direction opposite to the direction in which the user moves the electronic device as a first direction to implement an anti-shake function of the target camera.

[0083] It should be understood that in some embodiments, the first operation may also include other operations, which are not limited here.

[0084] In some embodiments, the first direction can also be determined based on a movement control signal generated by the electronic device (e.g., a movement control signal generated by an application or service in the electronic device to move the carrier in the first direction based on an image captured by a camera and / or a target to be photographed and / or the movement of the electronic device when implementing an autofocus or anti-shake function). For example, if none of the actuation wires in the SMA motor are disconnected and the electronic device detects a first movement control signal that controls movement of the carrier in the first direction, the electronic device can control movement of the carrier in the SMA motor in the first direction relative to the fixed portion using N actuation wires. Furthermore, if L (L ≥ 1) of the N actuation wires are disconnected and a second movement control signal that controls movement of the carrier in the first direction is detected, the electronic device can select K (K ≥ 2) actuation wires from the undisconnected actuation wires whose direction of the resultant force acting on the carrier during contraction is in the first direction (hereinafter referred to as target actuation wires). The electronic device can then control movement of the carrier in the SMA motor in the first direction relative to the fixed portion based on the selected K actuation wires.

[0085] For example, in the scenario shown in FIG3 , if none of the actuating wires in the actuating wire group 54 are disconnected, upon determining that the carrier 53 needs to be moved in the positive Z-axis direction (as the first direction) to achieve focus of the camera 5, the mobile phone 1 can detect a control signal corresponding to controlling the carrier in the positive Z-axis direction. The mobile phone 1 can then control actuating wires L2, L4, L6, and L8 (as N actuating wires) to contract at the same amplitude to control the carrier 53 to move in the positive Z-axis direction. If actuating wires L8 and / or L4 are disconnected, upon determining that the carrier 53 needs to be moved in the positive Z-axis direction to achieve focus of the camera 5, the mobile phone 1 can detect a control signal corresponding to controlling the carrier in the positive Z-axis direction and control actuating wires L2, L6, and L8 (as L actuating wires) to contract at the same amplitude to control the carrier 53 to move in the positive Z-axis direction.

[0086] In some embodiments, the mobile phone 1 can detect disconnection of the actuation wires of the SMA motor when the mobile phone 1 is powered on or when the camera is first activated after powering on, and determine the L actuation wires to be used to control the movement of the carrier in the first direction. Then, upon detecting movement in the first direction, the mobile phone 1 can directly use the L actuation wires to control the movement of the carrier in the first direction.

[0087] In some embodiments, when the mobile phone 1 needs to control the carrier to move in the first direction, the mobile phone 1 can select L actuation wires to be used to control the carrier to move in the first direction based on the disconnection status of the actuation wires of the SMA motor. The mobile phone 1 then drives the carrier to move in the first direction based on the L selected actuation wires.

[0088] In some embodiments, the target actuation line can be at least part of the actuation lines that are not disconnected among the N actuation lines, or other actuation lines different from the N actuation lines, or a combination of the actuation lines that are not disconnected among the N actuation lines and other actuation lines that are not disconnected.

[0089] Next, the technical solution of the present application will be described by taking the aforementioned mobile phone 1 as an electronic device and combining the connection method of the actuating wire, the carrier and the fixing part in the camera 5 shown in FIG2 .

[0090] In some embodiments, when the forces exerted by the actuating lines L1 and L5 on the carrier 53 are decomposed along the Z axis and the XY plane, the forces exerted by the actuating lines L1 and L5 on the carrier 53 have components parallel to each other and opposite in direction in the XY plane, and components in the Z axis direction have the same direction.

[0091] In some embodiments, when the forces exerted by the actuating lines L3 and L7 in the camera 5 on the carrier 53 are decomposed along the Z axis and the XY plane, the forces exerted by the actuating lines L3 and L7 on the carrier 53 have components parallel to each other and opposite in direction in the XY plane, and components in the Z axis direction have the same direction.

[0092] In some embodiments, when the forces exerted by the actuating lines L2 and L6 on the carrier 53 are decomposed along the Z axis and the XY plane, the forces exerted by the actuating lines L2 and L6 on the carrier 53 have components parallel to each other and opposite in direction in the XY plane, and components in the Z axis direction have the same direction.

[0093] In some embodiments, when the forces exerted by the actuating lines L4 and L8 on the carrier 53 are decomposed along the Z axis and the XY plane, the forces exerted by the actuating lines L4 and L8 on the carrier 53 have components parallel to each other and opposite in direction in the XY plane, and components in the Z axis direction have the same direction.

[0094] For ease of description, when the force acting on the carrier 53 is decomposed along the Z-axis and the XY plane, two actuation lines whose components in the XY plane are parallel and opposite in direction, and whose components in the Z-axis direction are in the same direction, are referred to as an actuation line pair. For example, in Figure 2 , actuation lines L1 and L5 form an actuation line pair, actuation lines L3 and L7 form an actuation line pair, actuation lines L2 and L6 form an actuation line pair, and actuation lines L4 and L8 form an actuation line pair.

[0095] It should be understood that when the two actuating wires in an actuating wire pair contract with the same amplitude, the direction of the resultant force acting on the carrier 53 is along the Z-axis direction.

[0096] In some embodiments, when the forces exerted on the carrier 53 by the actuating wires L1, L3, L5, and L7 are decomposed along the Z-axis and the XY plane, the Z-axis components of the forces exerted on the carrier 53 by the actuating wires L1, L3, L5, and L7 are all directed in the positive Z-axis direction. For ease of description, the plurality of actuating wires whose Z-axis components of the forces exerted on the carrier 53 are all directed in the positive Z-axis direction are hereinafter referred to as a positive-tension actuating wire group.

[0097] In some embodiments, when the forces exerted on the carrier 53 by the actuating wires L2, L4, L6, and L8 are decomposed along the Z-axis and the XY plane, the Z-axis components of the forces exerted on the carrier 53 by the actuating wires L2, L4, L6, and L8 are all directed in the negative Z-axis direction. For ease of description, the plurality of actuating wires whose Z-axis components of the forces exerted on the carrier 53 are all directed in the negative Z-axis direction are hereinafter referred to as a negative-tension actuating wire group.

[0098] It should be understood that in an SMA motor, the positive tension actuation wire group may include at least one actuation wire pair (e.g., 1, 2, 3, 4, etc.), and the negative tension actuation wire group may include at least one actuation wire pair (e.g., 1, 2, 3, 4, etc.).

[0099] First, the following describes a situation in which the mobile phone 1 controls the movement of the carrier 53 when at least one actuating wire in an actuating wire pair in a positive-tension actuating wire group is disconnected.

[0100] FIG5A is a schematic diagram showing a situation in which the mobile phone 1 controls the carrier 53 to move along the positive direction of the Z axis when at least one of the actuating wires L8 and L4 is disconnected according to some embodiments of the present application.

[0101] Referring to Figure 5A , if at least one of the actuating wires L8 and L4 in the aforementioned camera 5 is disconnected, the mobile phone 1 can control the movement of the carrier 53 along the positive Z-axis direction via the actuating wires L2 and L6. For example, if either actuating wire L8 or L4 is disconnected, the mobile phone 1 can control the movement of the carrier 53 along the positive Z-axis direction by controlling the actuating wires L2 and L6 to contract with the same amplitude.

[0102] Continuing with reference to FIG5A , when the actuating line L2 and the actuating line L6 contract at the same amplitude, the force G3 exerted by the actuating line L2 on the carrier 53 has a component G3' in the Y direction (along the negative direction of the Y axis) and a component G3" in the positive direction of the Z axis, and the force G2 exerted by the actuating line L6 on the carrier 53 has a component G4' in the Y direction (along the positive direction of the Y axis) and a component G4" in the positive direction of the Z axis. Since the actuating line L2 and the actuating line L6 contract at the same amplitude, G3' and G4' are of the same magnitude and opposite in direction, and the direction of the resultant force exerted by the actuating line L2 and the actuating line L6 on the carrier 53 is in the positive direction of the Z axis (i.e., the resultant force of G3" and G4"). Since the connection point B1 and the connection point F1 are fixed to the fixed portion 52, the connection point B2 and the connection point F2 move in the positive direction of the Z axis under the action of the force in the positive direction of the Z axis, thereby causing the carrier 53 to move in the positive direction of the Z axis. In this way, the mobile phone 1 can control the carrier 53 to move relative to the image sensor 12 along the Z-axis direction through the actuating wires L2 and L6 to achieve focusing of the camera 5 .

[0103] It should be understood that in the situation shown in Figure 5A, since the actuating lines L1, L3, L5, and L7 are not disconnected, the mobile phone 1 can control the movement of the carrier 53 along the negative direction of the Z axis through one or two actuating line pairs in the negative tension actuating line group.

[0104] For example, FIG5B shows a schematic diagram of a situation in which the mobile phone 1 controls the carrier 53 to move along the negative direction of the Z axis when at least one of the actuating line pairs corresponding to the actuating line L8 and the actuating line L4 is disconnected according to some embodiments of the present application.

[0105] Referring to FIG. 5B , in some embodiments, actuation lines L1 and L5 can contract at the same amplitude, and actuation lines L3 and L7 can also contract at the same amplitude. Because actuation lines L1 and L5 are part of the same actuation line pair and have the same contraction amplitude, the Y-axis components of the forces exerted by actuation lines L1 and L5 on carrier 53 cancel each other out, resulting in a net force direction along the negative Z-axis. Similarly, actuation lines L3 and L7 are part of the same actuation line pair and have the same contraction amplitude. The X-axis components of the forces exerted by actuation lines L1 and L5 on carrier 53 cancel each other out, resulting in a net force direction along the negative Z-axis. Therefore, the net force exerted by actuation lines L1, L3, L5, and L7 on carrier 53 is directed along the negative Z-axis. Since connection points A1, C1, E1 and G1 are fixed on the fixing portion 52, connection points A2, C2, E2 and G2 move along the negative Z-axis direction, thereby causing the carrier 53 to move along the negative Z-axis direction.

[0106] In some embodiments, the mobile phone 1 can also generate a resultant force acting on the carrier 53 along the negative Z-axis direction by only controlling the actuating wires L1 and L5 to contract with the same amplitude, thereby driving the carrier 53 to move along the negative Z-axis direction.

[0107] In some embodiments, the mobile phone 1 can also generate a resultant force acting on the carrier 53 along the negative direction of the Z axis by only controlling the actuating wires L3 and L7 to contract with the same amplitude, thereby driving the carrier 53 to move along the negative direction of the Z axis.

[0108] That is, if none of the actuating wires in the multiple actuating wire pairs in the negative-tension actuating wire group are disconnected, the mobile phone 1 can control the carrier 53 to move along the negative Z-axis direction through one or more of the actuating wire pairs. Similarly, if none of the actuating wires in the multiple actuating wire pairs in the positive-tension actuating wire group are disconnected, the mobile phone 1 can control the carrier 53 to move along the positive Z-axis direction through one or more of the actuating wire pairs.

[0109] In the situation shown in FIG5A , since the actuating lines L1 , L3 , L5 and L7 are not disconnected, the mobile phone 1 can still control the carrier 53 to move in a plane perpendicular to the Z axis to achieve the anti-shake function of the camera 5 .

[0110] In some embodiments, for the situation shown in FIG5A , referring to FIG6 , the mobile phone 1 can control the carrier 53 to move in the negative direction of the Y-axis by shortening the actuating lines L1 and L2 by the same amount. In this case, the components of the forces acting on the carrier 53 by the actuating lines L1 and L2 in the Z-axis direction cancel each other out. In other words, the direction of the resultant force acting on the carrier 53 by the actuating lines L1 and L2 is along the negative direction of the Y-axis. Since the connection points A1 and B1 are fixed to the fixed portion 52 , the connection points A2 and B2 will move in the negative direction of the Y-axis under the action of the force in the negative direction of the Y-axis, thereby driving the carrier 53 to move in the negative direction of the Y-axis.

[0111] In some embodiments, for the situation shown in FIG5A , referring to FIG7 , the mobile phone 1 can also control the carrier 53 to move in the positive direction of the Y axis by shortening the actuating lines L5 and L6. In this case, the components of the forces acting on the carrier 53 by the actuating lines L5 and L6 in the Z axis direction cancel each other out. In other words, the direction of the resultant force acting on the carrier 53 by the actuating lines L5 and L6 is along the positive direction of the Y axis. Since the connection point E1 and the connection point F1 are fixed to the fixed portion 52, the connection point E2 and the connection point F2 will move in the positive direction of the Y axis under the action of the force in the positive direction of the Y axis, thereby driving the carrier 53 to move in the positive direction of the Y axis.

[0112] In some embodiments, for the situation shown in FIG5A , referring to FIG8A , the mobile phone 1 can control the movement of the carrier 53 in the positive X-axis direction by controlling the actuation lines L2 and L6 to shorten and the actuation line L3 to shorten. In this case, the resultant force exerted on the carrier 53 by the actuation lines L2 and L6 is in the positive Z-axis direction and cancels out the negative Z-axis component of the force exerted on the carrier 53 by the actuation line L3. In other words, the direction of the resultant force exerted on the carrier 53 by the actuation lines L2, L6, and L3 is the positive X-axis component of the force exerted by the actuation line L3 on the carrier 53. Because the connection points B1, C1, and F1 are fixed to the fixed portion 52, the connection point C2 will move in the positive X-axis direction under the influence of the positive X-axis component of the force exerted on the carrier 53 by the actuation line L3, thereby driving the carrier 53 to move in the positive X-axis direction.

[0113] In some embodiments, for the situation shown in FIG5A , referring to FIG8B , the mobile phone 1 can control the movement of the carrier 53 in the negative X-axis direction by controlling the actuation lines L2 and L6 to shorten and the actuation line L7 to shorten. In this case, the resultant force exerted on the carrier 53 by the actuation lines L2 and L6 is in the positive Z-axis direction and cancels out the negative Z-axis component of the force exerted on the carrier 53 by the actuation line L7. In other words, the resultant force exerted on the carrier 53 by the actuation lines L2, L6, and L7 is in the negative X-axis component of the force exerted by the actuation line L7. Because the connection points B1, G1, and F1 are fixed to the fixed portion 52, the connection point G2 will move in the negative X-axis direction under the influence of the negative X-axis component of the force exerted on the carrier 53 by the actuation line L7, thereby driving the carrier 53 in the negative X-axis direction.

[0114] It should be understood that when at least one of the actuating lines L2 and L6 is disconnected, or when at least one of the actuating lines L1 and L5 is disconnected, or when at least one of the actuating lines L3 and L7 is disconnected, the manner in which the mobile phone 1 controls the movement of the carrier 5 can refer to the aforementioned situation where at least one of the actuating lines L8 and L4 is disconnected, and no further details will be given here.

[0115] Next, a scheme for the mobile phone 1 to control the movement of the carrier 53 is introduced when at least one actuating wire in an actuating wire pair of the positive tension actuating wire group is disconnected and at least one actuating wire in an actuating wire pair of the negative tension actuating wire group is also disconnected.

[0116] 9A shows a schematic diagram of a situation in which the mobile phone 1 controls the carrier 53 to move along the positive direction of the Z axis when at least one of the actuating lines L8 and L4 is disconnected and at least one of the actuating lines L7 and L3 is disconnected according to some embodiments of the present application.

[0117] Referring to Figure 9A, when at least one of the actuating lines L8 and L4 in the aforementioned camera 5 is disconnected, and at least one of the actuating lines L7 and L3 is disconnected, the mobile phone 1 can control the carrier 53 to move along the positive direction of the Z axis through the actuating lines L2 and L6.

[0118] Referring to FIG. 9A , when at least one of actuating wires L8 and L4 is disconnected, and at least one of actuating wires L7 and L3 is disconnected, mobile phone 1 can control actuating wires L2 and L6 to contract with the same amplitude to control carrier 53 to move along the positive direction of the Z axis. In this case, the force G3 exerted by actuating wire L2 on carrier 53 has a component G3' in the Y direction (along the negative direction of the Y axis) and a component G3" in the positive direction of the Z axis. The force G4 exerted by actuating wire L6 on carrier 53 has a component G4' in the Y direction (along the positive direction of the Y axis) and a component G4" in the positive direction of the Z axis. Since actuating wires L2 and L6 contract with the same amplitude, G3' and G4' have the same value and opposite directions, and the direction of the resultant force exerted by actuating wires L2 and L6 on carrier 53 is in the positive direction of the Z axis. Because connection points B1 and F1 are fixed to fixed portion 52, connection points B2 and F2 move in the positive Z-axis direction under the action of a force in the positive Z-axis direction, thereby causing carrier 53 to move in the positive Z-axis direction. In this way, mobile phone 1 can control the movement of carrier 53 in the positive Z-axis direction relative to image sensor 12 via actuating wires L2 and L6, thereby achieving focus of camera 5.

[0119] In some embodiments, for the scenario shown in FIG9A , the mobile phone 1 can also control the carrier 53 to move relative to the image sensor 12 in the negative Z-axis direction by controlling the actuating wires L1 and L5 to contract at the same amplitude, thereby achieving focus of the camera 5. For example, referring to FIG9B , the force G5 exerted by the actuating wire L1 on the carrier 53 has a component G3' in the Y-direction (along the negative Y-axis direction) and a component G5" in the negative Z-direction. The force G6 exerted by the actuating wire L5 on the carrier 53 has a component G6' in the Y-direction (along the positive Y-axis direction) and a component G6" in the negative Z-direction. Because the actuating wires L1 and L5 contract at the same amplitude, G5' and G6' are equal in magnitude and opposite in direction. The direction of the resultant force exerted by the actuating wires L1 and L5 on the carrier 53 is in the negative Z-axis direction. Because connection points A1 and E1 are fixed to fixed portion 52, connection points A2 and E2 move in the negative Z-axis direction under the action of a force in the negative Z-axis direction, thereby causing carrier 53 to move in the negative Z-axis direction. In this way, mobile phone 1 can control carrier 53 to move in the negative Z-axis direction relative to image sensor 12 via actuating lines L1 and L5, thereby achieving focus of camera 5.

[0120] In some embodiments, for the situation shown in FIG9A , the mobile phone 1 can control the carrier 53 to move along the negative direction of the Y-axis by controlling the actuating line L1 and the actuating line L2 to contract with the same amplitude. For details, please refer to the embodiment shown in FIG6 above, which will not be described in detail here.

[0121] In some embodiments, for the situation shown in FIG9A , the mobile phone 1 can control the carrier 53 to move along the positive direction of the Y-axis by controlling the actuating line L5 and the actuating line L6 to contract with the same amplitude. For details, please refer to the embodiment shown in FIG7 above, which will not be described in detail here.

[0122] In some embodiments, for the situation shown in FIG. 9A , when both the actuating line L3 and the actuating line L7 are disconnected, the mobile phone 1 cannot move the carrier 53 in the X direction.

[0123] In some embodiments, in the situation shown in FIG9A , when actuation line L7 is disconnected and actuation line L3 is not disconnected, the mobile phone 1 can control the movement of the carrier 53 along the positive direction of the X-axis by controlling the actuation lines L2 and L6 to exhibit a contraction trend and controlling the contraction method of actuation line L3. For details, please refer to the embodiment shown in FIG8A and will not be repeated here.

[0124] In some embodiments, in the scenario shown in FIG9A , when actuation line L3 is disconnected and actuation line L7 is not disconnected, mobile phone 1 can control the movement of carrier 53 along the negative X-axis direction by controlling actuation lines L2 and L6 to exhibit a contraction trend and controlling the contraction method of actuation line L7. For details, please refer to the embodiment shown in FIG8B and will not be described in detail here.

[0125] It should be understood that when at least one of the actuating lines L2 and L6 is disconnected and at least one of the actuating lines L1 and L5 is disconnected, reference can be made to the aforementioned situation where at least one of the actuating lines L8 and L4 is disconnected and at least one of the actuating lines L7 and L3 is disconnected, and no further details will be given here.

[0126] Figure 10A shows a schematic diagram of a situation in which the mobile phone 1 controls the carrier 53 to move along the positive direction of the Z axis when at least one of the actuating lines L8 and L4 is disconnected and at least one of the actuating lines L1 and L5 is disconnected according to some embodiments of the present application.

[0127] As shown in FIG10A , when at least one of actuating wires L8 and L4 is disconnected, and at least one of actuating wires L1 and L5 is disconnected, the mobile phone 1 can control actuating wires L2 and L6 to contract with the same amplitude to control the movement of the carrier 53 along the positive Z-axis direction. For details, please refer to the embodiment shown in FIG9A , and a detailed description is omitted here.

[0128] In some embodiments, regarding the situation shown in FIG10A , referring to FIG10B , the mobile phone 1 can also control the movement of the carrier 53 relative to the image sensor 12 in the negative Z-axis direction by controlling the actuating wires L3 and L7 to contract with the same amplitude, thereby achieving focus of the camera 5. In this case, the X-direction component of the force exerted on the carrier 53 by the actuating wire L3 and the X-direction component of the force exerted on the carrier 53 by the actuating wire L7 cancel each other out, and the combined force exerted on the carrier 53 by the actuating wires L3 and L7 is directed in the negative Z-axis direction. Because the connection points C1 and G1 are fixed to the fixed portion 52, the force exerted in the negative Z-axis direction by the connection points C2 and G2 causes the carrier 53 to move in the negative Z-axis direction, thereby causing the carrier 53 to move in the negative Z-axis direction. In this way, the mobile phone 1 can control the movement of the carrier 53 relative to the image sensor 12 in the negative Z-axis direction by using the actuating wires L3 and L7, achieving focus of the camera 5.

[0129] In some embodiments, for the situation shown in FIG10A , the mobile phone 1 can control the carrier 53 to move in the positive direction of the X-axis by controlling the actuation lines L2 and L6 to shorten and controlling the actuation line L3 to shorten. For details, please refer to the embodiment shown in FIG8A , which will not be described in detail here.

[0130] In some embodiments, for the situation shown in FIG10A , the mobile phone 1 can control the carrier 53 to move in the negative direction of the X-axis by controlling the actuation lines L2 and L6 to shorten and controlling the actuation line L7 to shorten. For details, please refer to the embodiment shown in FIG8B , which will not be described in detail here.

[0131] In some embodiments, for the situation shown in FIG10A , referring to FIG10C , the mobile phone 1 can control the movement of the carrier 53 in the positive Y-axis direction by controlling the actuation lines L3 and L7 to shorten and controlling the actuation line L6 to shorten. In this case, the resultant force exerted on the carrier 53 by the actuation lines L3 and L7 is in the positive Z-axis direction and cancels out the negative Z-axis component of the force exerted on the carrier 53 by the actuation line L6. In other words, the direction of the resultant force exerted on the carrier 53 by the actuation lines L3, L6, and L7 is the positive Y-axis component of the force exerted by the actuation line L6 on the carrier 53. Because the connection points C1, G1, and F1 are fixed to the fixed portion 52, the connection point F2 will move in the positive Y-axis direction under the influence of the positive Y-axis component of the force exerted on the carrier 53 by the actuation line L6, thereby driving the carrier 53 to move in the positive Y-axis direction.

[0132] In some embodiments, for the situation shown in FIG10A , referring to FIG10D , the mobile phone 1 can control the carrier 53 to move in the negative Y-axis direction by controlling the actuation lines L3 and L7 to shorten and controlling the actuation line L2 to shorten. In this case, the resultant force exerted on the carrier 53 by the actuation lines L3 and L7 is in the positive Z-axis direction and cancels out the negative Z-axis component of the force exerted on the carrier 53 by the actuation line L2. In other words, the resultant force exerted on the carrier 53 by the actuation lines L3, L2, and L7 is in the negative Y-axis component of the force exerted on the carrier 53 by the actuation line L2. Because connection points C1, G1, and B1 are fixed to the fixed portion 52, connection point B2 will move in the negative Y-axis direction under the influence of the negative Y-axis component of the force exerted on the carrier 53 by the actuation line L2, thereby driving the carrier 53 to move in the negative Y-axis direction.

[0133] It should be understood that when at least one of the actuating lines L2 and L6 is disconnected and at least one of the actuating lines L3 and L7 is disconnected, the way in which the mobile phone 1 controls the movement of the carrier 53 can refer to the situation where at least one of the actuating lines L8 and L4 is disconnected and at least one of the actuating lines L1 and L5 is disconnected, and no further details will be given here.

[0134] Based on the above embodiments, the control method provided in the embodiments of the present application can control the SMA motor based on the remaining actuating wires when one of the actuating wires is disconnected, allowing the carrier to continue moving. In this way, a camera using an SMA motor can maintain at least some of its focus and image stabilization functions.

[0135] Next, the technical solution of the present application will be introduced by taking the aforementioned mobile phone 1 as an electronic device, combining the connection method of the actuating wire, the carrier and the fixing part in the camera 5 shown in FIG2 , and the situations shown in FIG5A to FIG9B .

[0136] FIG11 is a flow chart showing a control method according to some embodiments of the present application. The execution subject of the flow can be an electronic device, such as the aforementioned mobile phone 1. As shown in FIG11 , the flow includes the following steps:

[0137] S1101, electronic equipment starts.

[0138] After the electronic device is started, the control method provided in the embodiment of the present application is triggered.

[0139] In some embodiments, when or after the electronic device is started, the electronic device may determine a first direction of movement of the SMA motor controlling the target camera in response to a first operation.

[0140] In some embodiments, the first operation may include: the user starting the electronic device, the user starting the target camera (for example, starting a camera application or other application that requires calling a camera), the user adjusting the camera focus, the user moving the electronic device, etc.

[0141] For example, in response to a user starting an operation of the electronic device, the electronic device may determine a first direction from the current position to the target position according to the target position of the carrier relative to the fixing portion and the current position of the carrier.

[0142] For another example, the electronic device can determine the focal length required for shooting based on the image captured by the camera according to the user's operation of starting the camera, and then determine the first direction of moving the carrier based on the determined focal length and the current focal length of the camera.

[0143] For another example, the electronic device may determine the first direction of the mobile carrier according to the focal length adjustment method (increasing the focal length or decreasing the focal length) in response to the user's operation of adjusting the focal length of the camera.

[0144] For another example, the electronic device may determine a direction opposite to the direction in which the user moves the electronic device as a first direction in response to the user moving the electronic device, so as to implement an anti-shake function of the target camera.

[0145] It should be understood that in some embodiments, when the electronic device is started, it can determine whether the actuating wires in the SMA motors of each camera in the electronic device are broken, which is not limited here.

[0146] S1102 , the electronic device controls the target camera based on all actuating lines in the SMA motor of the target camera.

[0147] The electronic device controls the target camera based on all actuating wires in the SMA motor of the target camera when there is no disconnection of the SMA motor of the target camera.

[0148] For example, when the target camera is the aforementioned camera 5 , if none of the actuating lines L1 to L8 are broken, the mobile phone 1 can control the movement of the carrier 53 based on the actuating lines L1 to L8 to achieve focus and anti-shake of the camera 5 .

[0149] For example, the mobile phone 1 can control the carrier 53 to move along the positive direction of the Z axis by controlling the contraction of the actuating wires L2, L4, L6, and L8, and can also control the carrier 53 to move along the negative direction of the Z axis by controlling the contraction of the actuating wires L1, L3, L5, and L7.

[0150] For another example, the mobile phone 1 can control the carrier 53 to move along the negative direction of the Y axis by controlling the contraction of the actuating wires L1 and L2, and control the carrier 53 to move along the positive direction of the Y axis by controlling the contraction of the actuating wires L5 and L6.

[0151] For another example, the mobile phone 1 can control the carrier 53 to move along the negative direction of the X axis by controlling the actuating wires L7 and L8 to contract, and control the carrier 53 to move along the positive direction of the X axis by controlling the actuating wires L3 and L4 to contract.

[0152] It should be understood that in some embodiments, the mobile phone 1 can also simultaneously control the movement of the carrier 53 in multiple directions along the X axis, Y axis, and Z axis, so that the combined movement of the carrier 53 is not along the X axis, Y axis, and Z axis.

[0153] It should be understood that a broken wire may be a physically broken actuating wire in the SMA motor, or an actuating wire with an abnormality (eg, an actuating wire whose resistance / current / voltage does not conform to a preset value or is not within a preset range).

[0154] For example, the electronic device may collect one or more of the current, voltage, and resistance of each actuating wire in the SMA motor of the target camera and compare the collected information with a preset value or a preset range. The electronic device may determine that the actuating wire is broken if the collected current, voltage, or resistance of a particular actuating wire differs from the preset value or exceeds the preset range. For example, the electronic device may determine that the actuating wire is broken if the current, voltage, or resistance of a particular actuating wire is zero.

[0155] It should be understood that the target camera may be one or more cameras of the electronic device.

[0156] S1103, the electronic device determines whether the SMA motor in the target camera is disconnected.

[0157] When a wire break exists in the SMA motor of the target camera, the electronic device determines the wire break of the SMA motor in the target camera.

[0158] For example, in the situation shown in FIG5A , when both actuation line L8 and actuation line L4 are disconnected, actuation line L8 and actuation line L4 are broken. When actuation line L8 is disconnected but actuation line L4 is not disconnected, actuation line L8 is broken. When actuation line L4 is disconnected but actuation line L8 is not disconnected, actuation line L4 is broken.

[0159] In some embodiments, the electronic device collects one or more of the current, voltage, and resistance of each actuating wire in the SMA motor of the target camera and compares the collected information with a preset value or a preset range. The electronic device may determine that an actuating wire is broken if the collected current, voltage, or resistance of a particular actuating wire differs from the preset value or exceeds a preset range (e.g., the current, voltage, or resistance is zero).

[0160] S1104 , the electronic device controls the SMA motor based on the target actuation wire among the unbroken SMA actuation wires.

[0161] When the disconnection control condition is met, the electronic device controls the movement direction of the carrier in the SMA motor as needed (e.g., the first direction described above). Multiple actuation wires that produce the same resultant force on the carrier as the movement direction are selected from the unbroken SMA actuation wires as target actuation wires. The mobile phone 1 can then control the SMA motor to move in that direction by controlling the target actuation wires to contract or tend to contract.

[0162] It will be appreciated that the broken wire control condition is used to indicate whether an unbroken SMA actuation wire is capable of driving a carrier in an SMA motor.

[0163] In some embodiments, when at least one actuation wire pair in the positive-force actuation wire group and the negative-force actuation wire group is not disconnected, the electronic device may determine that the disconnection control condition is met.

[0164] For example, for the aforementioned camera 5, the negative tension actuation line group includes actuation line L1, actuation line L3, actuation line L5, and actuation line L7, wherein actuation line L1 and actuation line L5 form an actuation line pair, and actuation line L3 and actuation line L7 form an actuation line pair. The positive tension actuation line group includes actuation line L2, actuation line L4, actuation line L6, and actuation line L8, wherein actuation line L2 and actuation line L6 form an actuation line pair, and actuation line L4 and actuation line L8 form an actuation line pair. Based on this, the mobile phone 1 can determine that the disconnection control condition is not met in any of the following situations:

[0165] Three or four of the actuation lines L1, L3, L5, and L7 are disconnected;

[0166] Three or four of the actuation lines L2, L4, L6, and L8 are disconnected;

[0167] The actuation line L1 and the actuation line L3 are disconnected;

[0168] The actuation line L5 and the actuation line L7 are disconnected;

[0169] The actuation line L2 and the actuation line L8 are disconnected;

[0170] The actuation line L4 and the actuation line L6 are disconnected.

[0171] It should be understood that in some embodiments, the disconnection control condition may also include other conditions, which are not limited here.

[0172] Exemplarily, the electronic device can automatically determine the target focal length corresponding to the image currently captured by the target camera (or according to the target focal length selected by the user, or the target focal length determined according to the shooting target corresponding to the focus selected by the user), and control the SMA motor to move along the Z axis based on the target actuation line in the undisconnected SMA actuation line so that the focal length used by the camera when capturing the image is the target focal length.

[0173] In some embodiments, the electronic device can determine the target focal length to be adopted by the target camera to capture images through an automatic focus (AF) algorithm, such as a contrast detection auto focus (CDAF) algorithm, a phase detection auto focus (PDAF) algorithm, etc., and determine the direction in which the carrier needs to be controlled to move based on the current focal length of the target camera.

[0174] Exemplarily, the electronic device can also achieve anti-shake of the target camera by controlling the SMA motor to move in the opposite direction in a plane perpendicular to the optical axis of the target camera based on the movement direction of the mobile phone 1 in the plane perpendicular to the optical axis of the target camera and based on the target actuation line in the unbroken SMA actuation line.

[0175] The following takes the electronic device as the aforementioned mobile phone 1 and the target camera as the aforementioned camera 5 as an example, and introduces a method for determining the target actuation line in combination with different disconnection situations.

[0176] In some embodiments, when the actuation line L8 and / or the actuation line L4 is broken, the target actuation line can be determined by:

[0177] Corresponding to increasing the focal length of the camera 5, the actuation line L2 and the actuation line L6 are determined as target actuation lines;

[0178] Corresponding to reducing the focal length of the camera 5, the actuation line L1, the actuation line L3, the actuation line L5, and the actuation line L7 are determined as target actuation lines, or the actuation line L1 and the actuation line L5 are determined as target actuation lines, or the actuation line L3 and the actuation line L7 are determined as target actuation lines;

[0179] Corresponding to controlling the carrier 53 to move in the positive direction of the X axis, the actuation lines L2, L3 and L6 are determined as target actuation lines;

[0180] Corresponding to controlling the carrier 53 to move in the negative direction of the X axis, the actuation lines L2, L7 and L6 are determined as target actuation lines;

[0181] Corresponding to controlling the carrier 53 to move in the positive direction of the Y axis, the actuation line L5 and the actuation line L6 are determined as target actuation lines;

[0182] Corresponding to controlling the carrier 53 to move toward the negative direction of the Y axis, the actuation line L1 and the actuation line L2 are determined as target actuation lines.

[0183] In some embodiments, when the actuation line L2 and / or the actuation line L6 is broken, the target actuation line can be determined by:

[0184] Corresponding to increasing the focal length of the camera 5, the actuation line L4 and the actuation line L8 are determined as target actuation lines;

[0185] Corresponding to reducing the focal length of the camera 5, the actuation line L1, the actuation line L3, the actuation line L5, and the actuation line L7 are determined as target actuation lines, or the actuation line L1 and the actuation line L5 are determined as target actuation lines, or the actuation line L3 and the actuation line L7 are determined as target actuation lines;

[0186] Corresponding to controlling the carrier 53 to move in the positive direction of the X axis, the actuation line L3 and the actuation line L4 are determined as target actuation lines;

[0187] Corresponding to controlling the carrier 53 to move in the negative direction of the X axis, the actuation line L7 and the actuation line L8 are determined as target actuation lines;

[0188] Corresponding to controlling the carrier 53 to move in the positive direction of the Y axis, the actuation lines L5, L4 and L8 are determined as target actuation lines;

[0189] Corresponding to controlling the carrier 53 to move toward the negative direction of the Y axis, the actuation lines L1 , L4 and L8 are determined as target actuation lines.

[0190] In some embodiments, when the actuation line L1 and / or the actuation line L5 is broken, the target actuation line can be determined by:

[0191] Corresponding to increasing the focal length of the camera 5, the actuation line L2, the actuation line L4, the actuation line L6, and the actuation line L8 are determined as target actuation lines, or the actuation line L2 and the actuation line L4 are determined as target actuation lines, or the actuation line L6 and the actuation line L8 are determined as target actuation lines;

[0192] Corresponding to reducing the focal length of the camera 5, the actuation line L3 and the actuation line L7 are determined as target actuation lines;

[0193] Corresponding to controlling the carrier 53 to move in the positive direction of the X axis, the actuation line L3 and the actuation line L4 are determined as target actuation lines;

[0194] Corresponding to controlling the carrier 53 to move in the negative direction of the X axis, the actuation line L7 and the actuation line L8 are determined as target actuation lines;

[0195] Corresponding to controlling the carrier 53 to move in the positive direction of the Y axis, the actuation lines L6, L3 and L7 are determined as target actuation lines;

[0196] Corresponding to controlling the carrier 53 to move toward the negative direction of the Y axis, the actuation lines L2 , L3 , and L7 are determined as target actuation lines.

[0197] In some embodiments, when the actuation line L3 and / or the actuation line L7 is broken, the target actuation line can be determined by:

[0198] Corresponding to increasing the focal length of the camera 5, the actuation line L2, the actuation line L4, the actuation line L6, and the actuation line L8 are determined as target actuation lines, or the actuation line L2 and the actuation line L4 are determined as target actuation lines, or the actuation line L6 and the actuation line L8 are determined as target actuation lines;

[0199] Corresponding to reducing the focal length of the camera 5, the actuation line L1 and the actuation line L5 are determined as target actuation lines;

[0200] Corresponding to controlling the carrier 53 to move in the positive direction of the X axis, the actuation line L4, the actuation line L1 and the actuation line L5 are determined as target actuation lines;

[0201] Corresponding to controlling the carrier 53 to move in the negative direction of the X axis, the actuation line L8, the actuation line L1 and the actuation line L5 are determined as target actuation lines;

[0202] Corresponding to controlling the carrier 53 to move in the positive direction of the Y axis, the actuation line L5 and the actuation line L6 are determined as target actuation lines;

[0203] Corresponding to the control carrier 53 moving toward the negative direction of the Y axis, the actuation lines L1 and L2 are determined as target actuation lines.

[0204] In some embodiments, when at least one of the actuation lines L8 and L4 is broken, and at least one of the actuation lines L7 and L3 is broken, the target actuation line may be determined by:

[0205] Corresponding to increasing the focal length of the camera 5, the actuation line L2 and the actuation line L6 are determined as target actuation lines;

[0206] Corresponding to reducing the focal length of the camera 5, the actuation line L1 and the actuation line L5 are determined as target actuation lines;

[0207] Corresponding to the control carrier 53 moving in the positive direction of the X axis and the actuation line L3 not being broken, the actuation lines L2, L3 and L6 are determined as target actuation lines;

[0208] Corresponding to the control carrier 53 moving in the negative direction of the X axis and the actuation line L7 not being broken, the actuation lines L2, L7 and L6 are determined as target actuation lines;

[0209] Corresponding to controlling the carrier 53 to move in the positive direction of the Y axis, the actuation line L5 and the actuation line L6 are determined as target actuation lines;

[0210] Corresponding to controlling the carrier 53 to move toward the negative direction of the Y axis, the actuation line L1 and the actuation line L2 are determined as target actuation lines.

[0211] In some embodiments, when at least one of the actuation lines L2 and L6 is broken, and at least one of the actuation lines L7 and L3 is broken, the target actuation line can be determined by:

[0212] Corresponding to increasing the focal length of the camera 5, the actuation line L4 and the actuation line L8 are determined as target actuation lines;

[0213] Corresponding to reducing the focal length of the camera 5, the actuation line L1 and the actuation line L5 are determined as target actuation lines;

[0214] Corresponding to controlling the carrier 53 to move in the positive direction of the X axis, the actuation lines L1, L5 and L4 are determined as target actuation lines;

[0215] Corresponding to controlling the carrier 53 to move in the negative direction of the X axis, the actuation lines L1, L5 and L8 are determined as target actuation lines;

[0216] Corresponding to controlling the carrier 53 to move in the positive direction of the Y axis, the actuation lines L4, L5 and L8 are determined as target actuation lines;

[0217] Corresponding to controlling the carrier 53 to move toward the negative direction of the Y axis, the actuation lines L1 , L4 and L8 are determined as target actuation lines.

[0218] In some embodiments, when at least one of the actuation lines L4 and L8 is broken, and at least one of the actuation lines L5 and L1 is broken, the target actuation line can be determined by:

[0219] Corresponding to increasing the focal length of the camera 5, the actuation line L2 and the actuation line L6 are determined as target actuation lines;

[0220] Corresponding to reducing the focal length of the camera 5, the actuation line L3 and the actuation line L7 are determined as target actuation lines;

[0221] Corresponding to controlling the carrier 53 to move in the positive direction of the X axis, the actuation lines L3, L2 and L6 are determined as target actuation lines;

[0222] Corresponding to controlling the carrier 53 to move in the negative direction of the X axis, the actuation line L7, the actuation line L2 and the actuation line L6 are determined as target actuation lines;

[0223] Corresponding to controlling the carrier 53 to move in the positive direction of the Y axis, the actuation lines L6, L3 and L7 are determined as target actuation lines;

[0224] Corresponding to controlling the carrier 53 to move toward the negative direction of the Y axis, the actuation lines L2 , L3 , and L7 are determined as target actuation lines.

[0225] In some embodiments, when at least one of the actuation lines L2 and L6 is broken, and at least one of the actuation lines L5 and L1 is broken, the target actuation line may be determined by:

[0226] Corresponding to increasing the focal length of the camera 5, the actuation line L8 and the actuation line L4 are determined as target actuation lines;

[0227] Corresponding to reducing the focal length of the camera 5, the actuation line L3 and the actuation line L7 are determined as target actuation lines;

[0228] Corresponding to controlling the carrier 53 to move in the positive direction of the X axis, the actuation line L3 and the actuation line L4 are determined as target actuation lines;

[0229] Corresponding to controlling the carrier 53 to move in the negative direction of the X axis, the actuation line L7 and the actuation line L8 are determined as target actuation lines;

[0230] Corresponding to the control carrier 53 moving in the positive direction of the Y axis and the actuation line L6 not being broken, the actuation line L6, the actuation line L3 and the actuation line L7 are determined as target actuation lines;

[0231] Corresponding to the control carrier 53 moving in the negative direction of the Y axis and the actuation line L2 not being broken, the actuation line L2 , the actuation line L3 and the actuation line L7 are determined as target actuation lines.

[0232] S1105, the electronic device turns off the SMA motor.

[0233] The electronic device turns off the SMA motor when the disconnection control conditions are not met.

[0234] In some embodiments, when the disconnection control conditions are not met, the electronic device may also display a prompt message to remind the user that the camera motor is damaged and the camera's focus and anti-shake functions will be turned off.

[0235] Based on the method provided in the above embodiment, when the actuating wire in the SMA motor of the target camera is broken and the breakage control conditions are met, the electronic device can still control the movement of the motor to achieve the focus and anti-shake functions of the target camera.

[0236] Specifically, FIG12 shows a schematic structural diagram of a mobile phone 1 according to some embodiments of the present application.

[0237] As shown in Figure 12, the mobile phone 1 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (USB) interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor module 180, a button 190, a motor 191, an indicator 192, a camera 193, a display screen 194, and a subscriber identification module (SIM) card interface 195, etc. Among them, the sensor module 180 can include a pressure sensor 180A, a gyroscope sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, and the like.

[0238] The processor 110 may include one or more processing units. For example, the processor 110 may include a central processing unit (CPU), an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a microcontroller unit (MCU), a video codec, a digital signal processor (DSP), a baseband processor, a neural network processing unit (NPU), a field programmable gate array (FPGA), etc. In some embodiments, different processing units may be independent devices or integrated into one or more processors.

[0239] Processor 110 may also include a memory for storing instructions and data. In some embodiments, the memory in processor 110 is a cache memory. This memory can store instructions or data that have just been used or are being recycled by processor 110. When processor 110 needs to use the instruction or data again, it can directly access it from the memory. This avoids repeated accesses, reduces processor 110 latency, and thus improves system efficiency.

[0240] In some embodiments, the processor 110 may be configured to execute instructions of the control methods provided in the aforementioned embodiments.

[0241] In some embodiments, the processor 110 may include one or more interfaces. The interfaces may include an inter-integrated circuit (I2C) interface, an inter-integrated circuit sound (I2S) interface, a pulse code modulation (PCM) interface, a universal asynchronous receiver / transmitter (UART) interface, a mobile industry processor interface (MIPI), a general-purpose input / output (GPIO) interface, etc.

[0242] The I2C interface is a bidirectional synchronous serial bus that includes a serial data line (SDA) and a serial clock line (SCL). In some embodiments, the processor 110 may include multiple I2C busses. The processor 110 may be coupled to the touch sensor 180K, the charger, the flash, the camera 193, and the like via different I2C bus interfaces. For example, the processor 110 may be coupled to the touch sensor 180K via the I2C interface, enabling communication between the processor 110 and the touch sensor 180K via the I2C bus interface, thereby enabling the touch function of the mobile phone 1.

[0243] USB port 130 is an interface that complies with USB standards and may be a Mini USB port, a Micro USB port, a USB Type-C port, or the like. USB port 130 can be used to connect a charger to charge mobile phone 1 and can also be used to transfer data between mobile phone 1 and peripheral devices. For example, this port can also be used to connect to other electronic devices, such as AR devices and display devices, to display a user interface on the AR devices or display devices.

[0244] The charging management module 140 is configured to receive charging input from a charger. While charging the battery 142 , the charging management module 140 can also provide power to the electronic device through the power management module 141 .

[0245] The power management module 141 is used to connect the battery 142, the charging management module 140, and the processor 110. The power management module 141 receives input from the battery 142 and / or the charging management module 140 to provide power to the processor 110, the internal memory 121, the display 194, the camera 193, and the wireless communication module 160.

[0246] The wireless communication function of the mobile phone 1 can be implemented through the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, the modem processor and the baseband processor.

[0247] Antenna 1 and antenna 2 are used to transmit and receive electromagnetic wave signals.

[0248] The mobile communication module 150 can provide solutions for wireless communications including 2G / 3G / 4G / 5G applied on the mobile phone 1. The mobile communication module 150 may include at least one filter, a switch, a power amplifier, a low noise amplifier (LNA), etc. The mobile communication module 150 can receive electromagnetic waves from the antenna 1, and filter, amplify and process the received electromagnetic waves, and transmit them to the modulation and demodulation processor for demodulation. The mobile communication module 150 can also amplify the signal modulated by the modulation and demodulation processor, and convert it into electromagnetic waves for radiation through the antenna 1. In some embodiments, at least some of the functional modules of the mobile communication module 150 can be set in the processor 110. In some embodiments, at least some of the functional modules of the mobile communication module 150 can be set in the same device as at least some of the modules of the processor 110.

[0249] The wireless communication module 160 can provide wireless communication solutions including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) networks), Bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), infrared (IR), etc., which are applied to the mobile phone 1. The wireless communication module 160 can be one or more devices that integrate at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2, frequency modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 110. The wireless communication module 160 can also receive the signal to be sent from the processor 110, frequency modulate it, amplify it, and convert it into electromagnetic waves for radiation through the antenna 2.

[0250] Mobile phone 1 implements its display functionality through a GPU, display screen 194, and an application processor. The GPU is a microprocessor for image processing that connects display screen 194 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. Processor 110 may include one or more GPUs that execute program instructions to generate or modify display information.

[0251] Display screen 194 is used to display images, videos, etc. Display screen 194 includes a display panel. The display panel can be a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (AMOLED), a flexible light-emitting diode (FLED), a Mini-LED, a Micro-LED, a Micro-OLED, a quantum dot light-emitting diode (QLED), etc. In some embodiments, mobile phone 1 may include one or N display screens 194, where N is a positive integer greater than 1.

[0252] The camera 193 is used to capture still images or videos. The object generates an optical image through the lens and projects it onto the photosensitive element. The photosensitive element can be a charge coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor. The photosensitive element converts the light signal into an electrical signal, and then passes the electrical signal to the ISP for conversion into a digital image signal. The ISP outputs the digital image signal to the DSP for processing. The DSP converts the digital image signal into an image signal in a standard RGB, YUV or other format. In some embodiments, the mobile phone 1 may include 1 or N cameras 193, where N is a positive integer greater than 1.

[0253] In some embodiments, at least one of the cameras 193 may be a camera driven by an SMA motor, such as the aforementioned camera 5 .

[0254] The external memory interface 120 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the mobile phone 1. The external memory card communicates with the processor 110 via the external memory interface 120 to implement data storage functions. For example, files such as music and videos can be stored on the external memory card.

[0255] The internal memory 121 can be used to store computer executable program code, and the executable program code includes instructions. The internal memory 121 may include a program storage area and a data storage area. In some embodiments, the program storage area may store an operating system, an application required for at least one function, etc., such as instructions for the control method provided in the aforementioned embodiments. The data storage area may store data created during the use of the mobile phone 1, such as the aforementioned target application, a patch package for the target application, and a hotspot code configuration file for the target application. In addition, the internal memory 121 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, a universal flash storage (UFS), etc. The processor 110 executes various functional applications of the mobile phone 1 by running instructions stored in the internal memory 121, and / or instructions stored in a memory provided in the processor 110.

[0256] The mobile phone 1 can implement audio functions such as music playback and recording through the audio module 170 , the speaker 170A, the receiver 170B, the microphone 170C, the headphone jack 170D, and the application processor.

[0257] The audio module 170 is used to convert digital audio information into analog audio signal output, and is also used to convert analog audio input into digital audio signals. The audio module 170 can also be used to encode and decode audio signals.

[0258] The speaker 170A, also called a "horn", is used to convert audio electrical signals into sound signals.

[0259] The receiver 170B, also called a "handset", is used to convert audio electrical signals into sound signals.

[0260] Microphone 170C, also called "microphone" or "microphone", is used to convert sound signals into electrical signals.

[0261] The headphone jack 170D is used to connect a wired headphone.

[0262] The pressure sensor 180A is used to sense pressure signals and convert them into electrical signals. In some embodiments, the pressure sensor 180A can be provided on the display screen 194. There are many types of pressure sensors 180A, such as resistive pressure sensors, inductive pressure sensors, capacitive pressure sensors, etc. A capacitive pressure sensor can be a device comprising at least two parallel plates having a conductive material. When a force acts on the pressure sensor 180A, the capacitance between the electrodes changes. The mobile phone 1 determines the intensity of the pressure based on the change in capacitance. When a touch operation is applied to the display screen 194, the mobile phone 1 detects the intensity of the touch operation based on the pressure sensor 180A. The mobile phone 1 can also calculate the position of the touch based on the detection signal of the pressure sensor 180A.

[0263] Accelerometer 180E can detect the magnitude of the acceleration of the phone 1 in all directions (generally three axes). When the phone 1 is stationary, it can detect the magnitude and direction of gravity. It can also be used to identify the posture of the electronic device, for applications such as switching between landscape and portrait modes and pedometers. In some embodiments, the phone 1 can determine the movement of the phone 1 based on the data collected by the accelerometer 180E, thereby determining the direction of movement of the carrier in the camera 5.

[0264] Distance sensor 180F is used to detect the distance between mobile phone 1 and other objects. In some embodiments, mobile phone 1 can use distance sensor 180F to determine the distance between the object corresponding to the camera's focus and mobile phone 1, and based on this distance, determine the focal length of the image captured by the camera. Mobile phone 1 can then determine the direction of movement of the carrier in the SMA motor in the camera based on the determined focal length and the current focal length of the camera.

[0265] Ambient light sensor 180L is used to sense ambient light brightness. Mobile phone 1 can adaptively adjust the brightness of display screen 194 based on the perceived ambient light. Ambient light sensor 180L can also be used to automatically adjust white balance when taking photos. Ambient light sensor 180L can also work with proximity sensor 180G to detect whether mobile phone 1 is in a pocket to prevent accidental touches.

[0266] The fingerprint sensor 180H is used to collect fingerprints. The mobile phone 1 can use the collected fingerprint characteristics to achieve fingerprint unlocking, access application locks, fingerprint photography, fingerprint call answering, etc.

[0267] The touch sensor 180K is also called a "touch control device." The touch sensor 180K can be disposed on the display screen 194. The touch sensor 180K and the display screen 194 form a touch screen, also called a "touch screen." The touch sensor 180K is used to detect touch operations applied thereto or in the vicinity thereof. The touch sensor can transmit the detected touch operations to the application processor to determine the type of touch event. Visual output related to the touch operations can be provided via the display screen 194. In some embodiments, the touch sensor 180K can also be disposed on the surface of the mobile phone 1, at a location different from that of the display screen 194.

[0268] Bone conduction sensor 180M can acquire vibration signals. In some embodiments, bone conduction sensor 180M can acquire vibration signals from vibrating bones in the human body. Bone conduction sensor 180M can also contact the human pulse to receive blood pressure signals.

[0269] The buttons 190 include a power button, a volume button, etc. The buttons 190 may be mechanical buttons or touch buttons. The mobile phone 1 may receive key inputs and generate key signal inputs related to user settings and function control of the mobile phone 1.

[0270] Motor 191 can generate vibration prompts.

[0271] The indicator 192 may be an indicator light, which may be used to indicate the charging status, power level changes, messages, missed calls, notifications, etc.

[0272] The SIM card interface 195 is used to connect a SIM card.

[0273] It should be understood that the structure of the mobile phone 1 shown in the embodiments of this application does not constitute a specific limitation on the mobile phone 1. In some embodiments of this application, the mobile phone 1 may include more or fewer components than shown, or some components may be combined or separated, or the components may be arranged differently. The components shown in the illustrations may be implemented in hardware, software, or a combination of software and hardware.

[0274] An embodiment of the present application also provides a program product, which, when executed on a device, can enable the device to implement the control methods provided in the aforementioned embodiments.

[0275] An embodiment of the present application further provides a readable storage medium, which stores instructions. When the instructions are executed by a device, the device implements the control methods provided by the aforementioned embodiments.

[0276] In the accompanying drawings, some structural or method features may be shown in a particular arrangement and / or order. However, it should be understood that such a particular arrangement and / or order may not be required. Rather, in some embodiments, these features may be arranged in a manner and / or order different from that shown in the illustrative drawings. In addition, the inclusion of a structural or method feature in a particular figure does not imply that such feature is required in all embodiments, and in some embodiments, such features may not be included or may be combined with other features.

[0277] It should be noted that in the examples and description of this patent, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a" do not exclude the presence of other identical elements in the process, method, article or device that includes the elements.

Claims

1. A control method, applied to an electronic device, characterized in that: The electronic device comprises a shape memory alloy motor, a fixed part of the shape memory alloy motor and a carrier are connected via N actuating wires, wherein one end of the actuating wire is connected to the carrier, and the other end of the actuating wire is connected to the fixed part, and when the actuating wire contracts, the carrier is driven to move relative to the fixed part, and the method comprises: detecting a first operation of a user, where the first operation is used to instruct the carrier to move along a first direction; When L of the N actuating wires are disconnected and K of the NL actuating wires that are not disconnected are contracted, the direction of the resultant force acting on the carrier is the same as the first direction. The K actuating wires are used to drive the carrier to move along the first direction.

2. The method according to claim 1, characterized in that The shape memory alloy motor is arranged in the camera of the electronic device, and the lens of the camera is arranged on the carrier.

3. The method according to claim 2, characterized in that The N actuating wires include P actuating wires whose direction of the component of the force acting on the carrier in the first reference direction during contraction is the positive direction of the first reference direction, and NP actuating wires whose direction of the component of the force acting on the carrier in the first reference direction during contraction is the opposite direction of the first reference direction, wherein the first reference direction is the same as the optical axis direction of the lens; and the use of the K actuating wires to drive the carrier to move along the first direction includes: When the following conditions are met, the K actuation wires are selected from the NL actuation wires that are not disconnected, and the K actuation wires are used to drive the carrier to move along the first direction: At least two of the P actuation lines are not disconnected, and when all of the P actuation lines that are not disconnected are contracted, the direction of the resultant force acting on the carrier is along the negative direction of the first reference direction; And there are at least two actuation wires in the NP actuation wires that are not disconnected, and when the actuation wires in the NP actuation wires that are not disconnected are all contracted, the direction of the resultant force acting on the carrier is along the positive direction of the first reference direction.

4. The method according to claim 3, characterized in that The shape memory alloy motor comprises a first reference plane, a second reference plane, a third reference plane and a fourth reference plane which are parallel to the first reference direction, wherein the first reference plane and the third reference plane are symmetrically arranged relative to the center of the carrier and are parallel to the second reference direction, the second reference plane and the fourth reference plane are symmetrically arranged relative to the center of the carrier and are parallel to the third reference direction, and the first reference direction, the second reference direction and the third reference direction are perpendicular to each other; The P actuation lines include a first actuation line, a third actuation line, a fifth actuation line and a seventh actuation line respectively arranged on the first reference surface, the second reference surface, the third reference surface and the fourth reference surface, and the NP actuation lines include a second actuation line, a fourth actuation line, a sixth actuation line and an eighth actuation line respectively arranged on the first reference surface, the second reference surface, the third reference surface and the fourth reference surface; wherein, The force acting on the carrier when the first actuating wire contracts includes a component in a negative direction of the first reference direction and a component in a negative direction of the second reference direction; The force acting on the carrier when the second actuating wire contracts includes a component in a positive direction of the first reference direction and a component in a negative direction of the second reference direction; When the third actuating wire contracts, the force acting on the carrier includes a component in a negative direction of the first reference direction and a component in a positive direction of the third reference direction; When the fourth actuating wire contracts, the force acting on the carrier includes a component in a positive direction of the first reference direction and a component in a positive direction of the third reference direction; When the fifth actuating wire contracts, the force acting on the carrier includes a component in a negative direction of the first reference direction and a component in a positive direction of the second reference direction; The force acting on the carrier when the sixth actuation wire contracts includes a component along the positive direction of the first reference direction and a component along the positive direction of the second reference direction; When the seventh actuation wire contracts, the force acting on the carrier includes a component in the negative direction of the first reference direction and a component in the negative direction of the third reference direction; When the eighth actuating wire contracts, the force acting on the carrier includes a component in a positive direction along the first reference direction and a component in a negative direction along the third reference direction.

5. The method according to claim 4, characterized in that The step of selecting the K actuation wires from the NL actuation wires that are not disconnected comprises: When at least one of the first actuation wire and the fifth actuation wire is disconnected, and at least one of the second actuation wire and the sixth actuation wire is disconnected, determining at least some of the third actuation wire, the fourth actuation wire, the seventh actuation wire, and the eighth actuation wire to be the K actuation wires; or when at least one of the first actuation line and the fifth actuation line is disconnected, and at least one of the fourth actuation line and the eighth actuation line is disconnected, determining at least some of the second actuation line, the third actuation line, the sixth actuation line, and the seventh actuation line as the K actuation lines; or when at least one of the third actuation line and the seventh actuation line is disconnected, and at least one of the second actuation line and the sixth actuation line is disconnected, at least some of the first actuation line, the fourth actuation line, the fifth actuation line, and the eighth actuation line are determined to be the K actuation lines; Alternatively, when at least one of the third actuation line and the seventh actuation line is disconnected, and at least one of the fourth actuation line and the eighth actuation line is disconnected, at least some of the first actuation line, the second actuation line, the fifth actuation line, and the sixth actuation line are determined to be the K actuation lines.

6. The method according to claim 5, characterized in that The step of determining at least some of the third actuation line, the fourth actuation line, the seventh actuation line, and the eighth actuation line as the K actuation lines when at least one of the first actuation line and the fifth actuation line is disconnected and at least one of the second actuation line and the sixth actuation line is disconnected comprises: Corresponding to the first direction being the positive direction of the first reference direction, determining the fourth actuation line and the eighth actuation line as the K actuation lines; or corresponding to the first direction being the negative direction of the first reference direction, determining the third actuation line and the seventh actuation line as the K actuation lines; or corresponding to the first direction being the positive direction of the third reference direction, determining the third actuation line and the fourth actuation line as the K actuation lines; or corresponding to the first direction being the negative direction of the third reference direction, determining the seventh actuation line and the eighth actuation line as the K actuation lines; or corresponding to the first direction being the positive direction of the second reference direction and the sixth actuation line being not disconnected, determining the third actuation line, the sixth actuation line and the seventh actuation line as the K actuation lines; Or corresponding to the first direction being the negative direction of the second reference direction and the second actuating wire being not disconnected, the second actuating wire, the third actuating wire and the seventh actuating wire are determined to be the K actuating wires.

7. The method according to claim 5, characterized in that The step of determining at least some of the second actuation line, the third actuation line, the sixth actuation line, and the seventh actuation line as the K actuation lines when at least one of the first actuation line and the fifth actuation line is disconnected and at least one of the fourth actuation line and the eighth actuation line is disconnected comprises: Corresponding to the first direction being the positive direction of the first reference direction, determining the second actuation line and the sixth actuation line as the K actuation lines; or corresponding to the first direction being the negative direction of the first reference direction, determining the third actuation line and the seventh actuation line as the K actuation lines; or corresponding to the first direction being the positive direction of the third reference direction, determining the second actuation line, the third actuation line and the sixth actuation line as the K actuation lines; or corresponding to the first direction being the negative direction of the third reference direction, determining the second actuation line, the sixth actuation line and the seventh actuation line as the K actuation lines; or corresponding to the first direction being the positive direction of the second reference direction, determining the third actuation line, the sixth actuation line and the seventh actuation line as the K actuation lines; Alternatively, corresponding to the first direction being the negative direction of the second reference direction, the second actuation line, the third actuation line and the seventh actuation line are determined to be the K actuation lines.

8. The method according to claim 2, characterized in that: The first operation includes any one of the following operations: A user starts the operation of the electronic device; An operation of a user adjusting the focal length of the camera; An operation of a user moving the electronic device; The user starts the operation of the camera.

9. The method according to claim 8, characterized in that The detecting a first operation of the user includes: When the first operation is an operation of the user starting the electronic device, determining the first direction based on the current position of the carrier and the preset position of the carrier; When the first operation is an operation of adjusting the focal length of the camera by the user, determining the first direction based on the current focal length of the camera and the focal length set by the user; When the first operation is an operation of the user moving the electronic device, determining the first direction according to a second direction in which the user moves the electronic device; When the first operation is an operation of starting the camera by the user, the first direction is determined based on the focal length of the image captured by the camera.

10. The method according to claim 1, characterized in that K is less than or equal to 4.

11. The method according to claim 1, characterized in that: The method further comprises: When none of the N actuation wires is disconnected, M actuation wires of the N actuation wires are used to drive the carrier to move along the first direction, wherein the M actuation wires include at least one actuation wire of the L actuation wires.

12. A readable storage medium, characterized in that: The readable storage medium includes instructions, and when the instructions are executed by the electronic device, the electronic device implements the control method according to any one of claims 1 to 11.

13. An electronic device, characterized in that: include: Shape memory alloy motor; A memory for storing instructions; A processor, configured to execute the instruction so that the electronic device controls the shape memory alloy motor through the control method according to any one of claims 1 to 11.

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