Ccrown rotation detection device

Abstract

The utility model provides a crown rotation detection device. The crown rotation detection device comprises a light emitting unit, a light receiving unit and a watch shaft, the meter shaft is provided with a conical structure, the central axis of the conical structure coincides with the central axis of the meter shaft, and the top of the conical structure faces the first horizontal direction. The light-emitting unit vertically emits detection light to the side surface of the meter shaft; the conical surface of the conical structure is used for receiving the detection light emitted by the light emitting unit and reflecting the detection light to the light receiving unit; and the light receiving unit is used for receiving the detection light reflected by the conical surface of the conical structure and obtaining the meter shaft rotation angle according to the light characteristic change of the received detection light. The conical structure is arranged on the light reflecting surface on the meter shaft, so that the main energy of the reflected light is concentrated in the light sensing area of the light receiving unit, the defect that the light sensing area is bright at the left and dark at the right is overcome, and the main energy of the reflected light is concentrated in the light sensing area, so that the power consumption of the light source is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of smart watches, and more specifically, to a crown rotation detection device. Background Art

[0002] There are two types of crown detection solutions for watches. One is the traditional mechanical detection solution, and the other is the optical detection solution. The core of the optical detection solution is the optical sensor, which collects the characteristic image of the light source after it is reflected by the watch shaft, and calculates the rotation angle of the watch shaft through a series of matching algorithms. In this process, the quality of the image obtained by the optical sensor directly affects the accuracy of the rotation angle detection.

[0003] Considering that most watch axes are smooth metal surfaces, optical detection solutions often use laser VCSEL as the light source, using the principle of coherent light diffraction. The laser irradiates the watch axis surface with tiny bumps and undulations, forming a speckle pattern related to the surface.

[0004] During the rotation of the watch shaft, the crown detection device collects the speckle pattern on the surface of the watch shaft at a certain frequency. According to the moving direction and moving distance of the same features in two consecutive images collected, the rotation direction and angle of the watch shaft can be determined.

[0005] The design optical path of the existing crown optical detection device is as follows Figure 1 As shown in the figure, the energy distribution of the laser beam is Gaussian, that is, the energy density is high in the center and gradually decreases to both sides. The laser VCSEL irradiates the table axis vertically, and the main energy of the reflected light is concentrated near the light source, while the optical sensor can only receive very little energy. In addition, in the sensor photosensitive area, the left side close to the VCSEL receives more energy, while the right side receives less energy, resulting in the following two defects:

[0006] First, a fixed image with a brightness gradient of bright left and dark right will be superimposed on the speckle image. This fixed image will cause the left area of ​​the optical sensor to be saturated, while the brightness of the right area is very low, weakening the speckle characteristics related to the surface of the table axis, thereby affecting the accuracy of the calculation results.

[0007] Second, the main energy of the reflected light is concentrated near the light source. In order to make the light intensity reach the detection range of the sensor, the power of the light source needs to be increased, which increases the power consumption. Utility Model Content

[0008] The purpose of the embodiments of the present application is to provide a crown rotation detection device to solve the problem that the existing crown optical detection device receives small energy on one side and large energy on the other side in its photosensitive area, resulting in reduced accuracy of the rotation angle calculation result and high power consumption of the light source.

[0009] A crown rotation detection device provided in an embodiment of the present application includes a light emitting unit, a light receiving unit and a watch shaft;

[0010] A table axis is arranged above the light-emitting unit, and the table axis is arranged in a horizontal direction;

[0011] The light-emitting unit is provided with a light-receiving unit along a first horizontal direction;

[0012] A conical structure is arranged on the table axis, the central axis of the conical structure coincides with the central axis of the table axis, and the top of the conical structure faces a first horizontal direction;

[0013] The light emitting unit emits detection light vertically toward the side of the meter axis;

[0014] The conical surface of the conical structure is used to receive the detection light emitted by the light-emitting unit and reflect the detection light to the light-receiving unit;

[0015] The light receiving unit is used to receive the detection light reflected by the conical surface of the conical structure, and obtain the rotation angle of the watch axis according to the change of the light characteristics of the received detection light; wherein the light characteristics of the detection light reflected by the conical surface are related to the rotation position of the watch axis.

[0016] In the above technical solution, a conical structure is set at the reflective surface of the light on the table axis, so that the main energy of the reflected light is concentrated in the photosensitive area of ​​the light receiving unit, improving the defect of the photosensitive area being bright on the left and dark on the right, and the main energy of the reflected light is concentrated in the photosensitive area, reducing the power consumption of the light source.

[0017] In some optional embodiments, n conical structures are arranged on the watch axis, the central axis of each conical structure coincides with the central axis of the watch axis, the top of each conical structure faces the horizontal first direction, and the top and bottom of two adjacent conical structures are connected; wherein n is a positive integer greater than or equal to 2.

[0018] In the above technical solution, n conical structures similar to multi-step structures are arranged on the table axis. Through the joint action of the n conical structures, the light reflected by the conical surfaces of the n conical structures is concentrated in the photosensitive area of ​​the light receiving unit, which occupies less space than a single conical structure.

[0019] In some optional embodiments, the cone angles of each cone structure are the same.

[0020] In the above technical solution, the cone angle of each cone structure in the multi-step structure is the same, and the light reflected by the cone surfaces of the n cone structures is evenly distributed in the photosensitive area of ​​the light receiving unit.

[0021] In some optional implementations, the n conical structures have cone angles that gradually decrease from left to right.

[0022] In the above technical solution, the cone angle of the cone structure gradually decreases from left to right, and n cone structures form a light-concentrating multi-step structure, so that the light reflected by different cone surfaces is more concentrated at the same position, and a light receiving unit is arranged at this position to further reduce the power consumption of the light source. The light-concentrating multi-step structure of this embodiment is suitable for a crown rotation detection device with a small light-sensitive area of ​​the light receiving unit.

[0023] In some optional embodiments, the n conical structures have cone angles that gradually increase from left to right.

[0024] In the above technical solution, the cone angle of the conical structure gradually increases from left to right, and n conical structures form a diffuse light multi-step structure, so that the light reflected by different conical surfaces is evenly distributed in the entire photosensitive area. The diffuse light multi-step structure of this embodiment is suitable for a crown rotation detection device with a larger photosensitive area of ​​the light receiving unit.

[0025] In some optional embodiments, the plane of the photosensitive area of ​​the light receiving unit is inclined at a set angle to the horizontal first direction, and the set angle is greater than 0 degrees and less than 90 degrees.

[0026] In the above technical scheme, the incident angle of the reflected light when it irradiates different positions of the photosensitive area is different. The closer the incident angle is to 0 degrees, the greater the received light intensity, and the larger the incident angle is, the smaller the received light intensity is. In this embodiment, the photosensitive area plane of the light receiving unit is tilted so that the incident angle of the reflected light irradiating the photosensitive area is around 0 degrees, which can further improve the energy utilization rate of the light source, reduce the power consumption of the light source, and make the light intensity received at different positions of the photosensitive area more uniform.

[0027] In some optional embodiments, a hinge structure is provided between the light emitting unit and the light receiving unit, and the hinge structure is used to adjust the tilt angle of the light receiving unit.

[0028] In the above technical solution, a hinge structure is set between the light-emitting unit and the light-receiving unit, so that the inclination angle of the photosensitive area can be adjusted according to parameters such as the height of the table axis and the distance between the light-emitting unit and the light-receiving unit, so that the incident angle of the reflected light irradiating the photosensitive area is around 0 degrees.

[0029] The power adjustment method provided in the embodiment of the present application and applied to the above crown rotation detection device includes:

[0030] Collect pixel data using the light receiving unit and calculate pixel sum values;

[0031] According to the pixel sum value, the supply current of the light-emitting unit is adjusted.

[0032] In the above technical solution, due to the influence of factors such as the height of the table axis and the material of the table axis, even if the same optical path structure is used, the light intensity received by the photosensitive area will be different. Too much or too little light intensity will distort the feature image and affect the calculation accuracy. In order to make the light intensity received by the photosensitive area within the optimal range, an adjustment mechanism for the light source power is added. Specifically, the light source power is adjusted by adjusting the power supply current to the light-emitting unit according to the pixels and values ​​collected by the light-receiving unit.

[0033] In some optional implementations, adjusting the power supply current of the light emitting unit according to the pixel and value includes:

[0034] Determine whether the pixel sum value is less than the minimum threshold;

[0035] If so, the supply current of the light emitting unit is increased.

[0036] In some optional implementations, adjusting the power supply current of the light emitting unit according to the pixel and value includes:

[0037] Determine whether the pixel sum value is greater than the maximum threshold;

[0038] If so, the power supply current of the light emitting unit is reduced.

[0039] An electronic device provided in an embodiment of the present application includes: a processor and a memory, wherein the memory stores machine-readable instructions executable by the processor, and when the machine-readable instructions are executed by the processor, any of the above methods is performed.

[0040] An embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, any of the above methods is executed. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 It is a schematic diagram of an existing crown optical detection device;

[0043] Figure 2 A schematic structural diagram of a crown rotation detection device provided in the first embodiment of the present application;

[0044] Figure 3 A schematic structural diagram of a crown rotation detection device provided in the second embodiment of the present application;

[0045] Figure 4 A schematic structural diagram of a crown rotation detection device provided in the third embodiment of the present application;

[0046] Figure 5 A schematic structural diagram of a crown rotation detection device provided in the fourth embodiment of the present application;

[0047] Figure 6 A schematic structural diagram of a crown rotation detection device provided in a fifth embodiment of the present application;

[0048] Figure 7 A flowchart of the power regulation method provided in the embodiment of the present application;

[0049] Figure 8 A possible structural diagram of an electronic device provided in an embodiment of the present application.

[0050] Icons: 1-light-emitting unit, 2-light-receiving unit, 3-axis, 31-conical structure, 32-multi-step structure, 33-light-concentrating multi-step structure, 34-light-scattering multi-step structure, 4-packaging shell, 51-processor, 52-memory, 53-communication interface, 54-communication bus. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0052] Please refer to Figure 2 , Figure 2 This is a structural schematic diagram of a crown rotation detection device provided in the first embodiment of the present application, wherein the crown rotation detection device includes a light emitting unit 1, a light receiving unit 2 and a watch shaft 3.

[0053] Among them, a table axis 3 is arranged above the light-emitting unit 1, and the table axis 3 is arranged in the horizontal direction; a light-receiving unit 2 is arranged on the right side of the light-emitting unit 1 in the horizontal direction; a conical structure 31 is arranged on the table axis 3, and the central axis of the conical structure 31 coincides with the central axis of the table axis 3, and the top of the conical structure 31 faces the right side in the horizontal direction. The light-emitting unit 1 and the light-receiving unit 2 are wrapped by a packaging shell, and the whole is an optical sensor. Specifically, the light-emitting unit 1 adopts a vertical cavity surface emitting laser (Vertical-Cavity Surface-Emitting Laser, abbreviated as VCSEL, also translated as vertical resonant cavity surface emitting laser), which is a semiconductor whose laser is emitted perpendicular to the top surface. There is a photosensitive area of ​​a certain area on the top of the light-receiving unit 2.

[0054] The light-emitting unit 1 emits detection light vertically to the side of the watch axis 3; the conical surface of the conical structure 31 is used to receive the detection light emitted by the light-emitting unit 1, and reflect the detection light to the light-receiving unit 2; the light-receiving unit 2 is used to receive the detection light reflected by the conical surface of the conical structure 31, and obtain the rotation angle of the watch axis 3 according to the change of light characteristics of the received detection light; wherein, the light characteristics of the detection light reflected by the conical surface are related to the rotation position of the watch axis 3.

[0055] Figure 2 A hand-held knob is provided on the right side of the middle table axis 3. The user rotates the knob manually to rotate the table axis 3. The rotation angle of the table axis 3 is detected by the optical sensor composed of the light-emitting unit 1 and the light-receiving unit 2. It should be noted that the hand-held knob can also be provided on the left side of the table axis 3. In the embodiment of the present application, a conical structure 31 is provided at the position of the light reflecting surface on the table axis 3, so that the main energy of the reflected light is concentrated in the photosensitive area of ​​the light-receiving unit 2, improving the defect that the photosensitive area is bright on the left and dark on the right, and the main energy of the reflected light is concentrated in the photosensitive area, reducing the requirements for the light source power and reducing the power consumption of the light source.

[0056] In this embodiment, the light emitting unit 1 and the light receiving unit 2 are in the same plane, the distance from the center of the laser emission port of the light emitting unit 1 to the center point of the photosensitive area of ​​the light receiving unit 2 is the center distance L, and the distance from the table axis 3 to the optical sensor is the table axis 3 height H. The size and cone angle of the conical structure 31 are determined by parameters such as the center distance L and the table axis 3 height H, so that the light at the top of the vertical light emitting unit 1 reaches the center point of the photosensitive area after being reflected by the conical surface of the conical structure 31, and the light with a set divergence angle emitted by the light emitting unit 1 can cover the entire photosensitive area after being reflected by the conical surface of the conical structure 31.

[0057] In some optional implementations, please refer to Figure 3 , Figure 3 The schematic diagram of the structure of a crown rotation detection device provided in the second embodiment of the present application is different from the first embodiment in that: n conical structures 31 are arranged on the watch shaft 3, the central axis of each conical structure 31 coincides with the central axis of the watch shaft 3, the top of each conical structure 31 faces the right in the horizontal direction, and the tops and bottoms of two adjacent conical structures 31 are connected; wherein n is a positive integer greater than or equal to 2. In this embodiment, n is equal to 6. It can be seen from the figure that the combination of 6 small conical structures 31 occupies a smaller volume than a large conical structure 31, which is conducive to the miniaturization of the device.

[0058] In an embodiment of the present application, n conical structures 31 similar to multi-step structures are arranged on the table axis 3. Through the joint action of the n conical structures 31, the light reflected by the conical surfaces of the n conical structures 31 is concentrated in the photosensitive area of ​​the light receiving unit 2, which occupies less space than a single conical structure 31.

[0059] In this embodiment, the cone angle of each conical structure 31 is the same. The light-emitting unit 1 and the light-receiving unit 2 are in the same plane, the distance from the center of the laser emission port of the light-emitting unit 1 to the center point of the photosensitive area of ​​the light-receiving unit 2 is the center distance L, and the distance from the table axis 3 to the optical sensor is the table axis 3 height H. The size and cone angle of the conical structure 31 are determined by parameters such as the number of conical structures 31, the center distance L, and the table axis 3 height H, so that the light from the top of the vertical light-emitting unit 1 reaches the center point of the photosensitive area after being reflected by the conical surface of one of the conical structures 31, and the light with a set divergence angle emitted by the light-emitting unit 1 can cover the entire photosensitive area after being reflected by the conical surfaces of n conical structures 31.

[0060] In the embodiment of the present application, the cone angles of each cone structure 31 in the multi-step structure 32 are the same, and the light reflected by the cone surfaces of the n cone structures 31 is evenly distributed in the photosensitive area of ​​the light receiving unit 2 .

[0061] In some optional implementations, please refer to Figure 4 , Figure 4 The schematic diagram of the structure of a crown rotation detection device provided in the third embodiment of the present application is different from the first embodiment in that: n conical structures 31 are arranged on the watch shaft 3, and the cone angle of the conical structure 31 gradually decreases from left to right among the n conical structures 31. The central axis of each conical structure 31 coincides with the central axis of the watch shaft 3, the top of each conical structure 31 faces the right in the horizontal direction, and the top and bottom of two adjacent conical structures 31 are connected; wherein n is a positive integer greater than or equal to 2. In this embodiment, n is equal to 6. It can be seen from the figure that the combination of 6 small conical structures 31 occupies a smaller volume than a large conical structure 31, which is conducive to the miniaturization of the equipment.

[0062] In the embodiment of the present application, n conical structures 31 similar to multi-step structures are arranged on the watch shaft 3. Through the joint action of the n conical structures 31, the light reflected by the conical surfaces of the n conical structures 31 is concentrated in the photosensitive area of ​​the light receiving unit 2, which occupies less space than a single conical structure 31. In addition, the cone angle of the conical structure 31 gradually decreases from left to right, and the n conical structures 31 form a focusing multi-step structure 33, so that the light reflected by different conical surfaces is more concentrated in the same position, and the light receiving unit 2 is arranged at this position, further reducing the power consumption of the light source. The focusing multi-step structure 33 of this embodiment is suitable for a crown rotation detection device in which the photosensitive area of ​​the light receiving unit 2 is small.

[0063] In this embodiment, the cone angle of each conical structure 31 gradually decreases from left to right. The light-emitting unit 1 and the light-receiving unit 2 are in the same plane, the distance from the center of the laser emission port of the light-emitting unit 1 to the center point of the photosensitive area of ​​the light-receiving unit 2 is the center distance L, and the distance from the table axis 3 to the optical sensor is the table axis 3 height H. The size and cone angle of each conical structure 31 are determined by parameters such as the number of conical structures 31, the center distance L, and the table axis 3 height H, so that the light from the top of the vertical light-emitting unit 1 reaches the center point of the photosensitive area after being reflected by the conical surface of one or more conical structures 31, and the light with a set divergence angle emitted by the light-emitting unit 1 can cover a smaller photosensitive area after being reflected by the conical surfaces of n conical structures 31.

[0064] In some optional implementations, please refer to Figure 5 , Figure 5 The schematic diagram of the structure of a crown rotation detection device provided in the fourth embodiment of the present application is different from the first embodiment in that: n conical structures 31 are arranged on the watch shaft 3, and the cone angle of the conical structure 31 gradually increases from left to right among the n conical structures 31. The central axis of each conical structure 31 coincides with the central axis of the watch shaft 3, the top of each conical structure 31 faces the right in the horizontal direction, and the tops and bottoms of two adjacent conical structures 31 are connected; wherein n is a positive integer greater than or equal to 2. In this embodiment, n is equal to 6. As can be seen from the figure, the combination of 6 small conical structures 31 occupies a smaller volume than a large conical structure 31, which is conducive to the miniaturization of the equipment.

[0065] In the embodiment of the present application, n conical structures 31 similar to multi-step structures are arranged on the watch shaft 3. Through the joint action of the n conical structures 31, the light reflected by the conical surfaces of the n conical structures 31 is concentrated in the photosensitive area of ​​the light receiving unit 2, which occupies less space than a single conical structure 31. In addition, the cone angle of the conical structure 31 gradually increases from left to right, and the n conical structures 31 form a diffuse light multi-step structure 34, so that the light reflected by different conical surfaces is evenly distributed in the entire photosensitive area. The diffuse light multi-step structure 34 of this embodiment is suitable for a crown rotation detection device with a large photosensitive area of ​​the light receiving unit 2.

[0066] In this embodiment, the cone angle of each conical structure 31 gradually decreases from left to right. The light-emitting unit 1 and the light-receiving unit 2 are in the same plane, the distance from the center of the laser emission port of the light-emitting unit 1 to the center point of the photosensitive area of ​​the light-receiving unit 2 is the center distance L, and the distance from the table axis 3 to the optical sensor is the table axis 3 height H. The size and cone angle of each conical structure 31 are determined by parameters such as the number of conical structures 31, the center distance L, and the table axis 3 height H, so that the light from the top of the vertical light-emitting unit 1 reaches the center point of the photosensitive area after being reflected by the conical surface of one of the conical structures 31, and the light with a set divergence angle emitted by the light-emitting unit 1 can cover a larger photosensitive area after being reflected by the conical surfaces of n conical structures 31.

[0067] In some optional implementations, please refer to Figure 6 , Figure 6 The fifth embodiment of the present application provides a schematic diagram of the structure of a crown rotation detection device, which is different from the second embodiment in that: the plane of the photosensitive area of ​​the light receiving unit 2 is tilted at a set angle to the right of the horizontal direction, and the set angle is greater than 0 degrees and less than 90 degrees. In the embodiment of the present application, the incident angle of the reflected light when it is irradiated to different positions of the photosensitive area is different. The closer the incident angle is to 0 degrees, the greater the light intensity received, and the greater the incident angle is, the smaller the light intensity received. In this embodiment, the plane of the photosensitive area of ​​the light receiving unit 2 is tilted, so that the incident angle of the reflected light irradiated to the photosensitive area is about 0 degrees, which can further improve the energy utilization rate of the light source, reduce the power consumption of the light source, and make the light intensity received at different positions of the photosensitive area more uniform.

[0068] In some optional embodiments, a hinge structure is provided between the light emitting unit 1 and the light receiving unit 2, and the hinge structure is used to adjust the tilt angle of the light receiving unit 2. In the embodiment of the present application, a hinge structure is provided between the light emitting unit 1 and the light receiving unit 2, so that the tilt angle of the photosensitive area can be adjusted according to parameters such as the height of the table axis 3 and the distance between the light emitting unit 1 and the light receiving unit 2, so that the incident angle of the reflected light irradiated to the photosensitive area is about 0 degrees.

[0069] The power regulation method provided in the embodiment of the present application and applied to the above crown rotation detection device includes: using the light receiving unit 2 to collect pixel data and calculate the pixel sum value; and adjusting the power supply current of the light emitting unit 1 according to the pixel sum value.

[0070] In the embodiment of the present application, considering the influence of factors such as the height of the table axis 3 and the material of the table axis 3, even if the same optical path structure is used, the light intensity received by the photosensitive area will be different. Too much or too little light intensity will distort the characteristic image and affect the calculation accuracy. In order to make the light intensity received by the photosensitive area within the optimal range, an adjustment mechanism for the light source power is added, specifically, according to the pixels and values ​​collected by the light receiving unit 2, the light source power is adjusted by adjusting the power supply current of the light emitting unit 1.

[0071] In some optional implementations, adjusting the power supply current of the light emitting unit 1 according to the pixel sum value includes: determining whether the pixel sum value is less than a minimum threshold; if so, increasing the power supply current of the light emitting unit 1 .

[0072] In some optional implementations, adjusting the power supply current of the light emitting unit 1 according to the pixel sum value includes: determining whether the pixel sum value is greater than a maximum value threshold; if so, reducing the power supply current of the light emitting unit 1 .

[0073] Please refer to Figure 7 , Figure 7 The power regulation method step flow chart provided in the embodiment of the present application first sets the thresholds of all pixel sum values ​​of the sensor, sum_max_th is the maximum threshold of the pixel sum value, and sum_mix_th is the minimum threshold of the pixel sum value. The light receiving unit 2 uses the power supply current of the initial light emitting unit 1 to acquire the image. After acquiring a frame of image, the pixel sum value of the entire frame of image is calculated. Next, it is determined whether the sum value is less than the minimum threshold value sum_mix_th. If so, the power supply current of the light emitting unit 1 is increased; if not, it is determined whether the sum value is greater than the maximum threshold value sum_max_th. If so, the power supply current of the light emitting unit 1 is reduced; otherwise, the power supply current of the light emitting unit 1 used last time is used to acquire the next frame of image. This method can ensure that the light intensity received by the light receiving unit 2 is always within the optimal range during use.

[0074] Furthermore, in order to avoid the influence of brightness changes of two adjacent images on the matching calculation, the original image can be subjected to noise reduction processing using a feature extraction algorithm such as Laplace before performing the matching calculation.

[0075] Figure 8 A possible structure of an electronic device provided by an embodiment of the present application is shown. Figure 8 The electronic device includes: a processor 51, a memory 52 and a communication interface 53. These components are interconnected and communicate with each other through a communication bus 54 and / or other forms of connection mechanisms (not shown).

[0076] The memory 52 includes one or more (only one is shown in the figure), which may be, but not limited to, a random access memory (RAM), a read only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), etc. The processor 51 and other possible components may access the memory 52, and read and / or write data therein.

[0077] The processor 51 includes one or more (only one is shown in the figure), which can be an integrated circuit chip with signal processing capabilities. The above-mentioned processor 51 can be a general-purpose processor, including a central processing unit (CPU), a micro control unit (MCU), a network processor (NP) or other conventional processors; it can also be a dedicated processor, including a neural network processor (NPU), a graphics processor (GPU), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. In addition, when there are multiple processors 51, some of them can be general-purpose processors and the other part can be dedicated processors.

[0078] The communication interface 53 includes one or more (only one is shown in the figure), which can be used to communicate directly or indirectly with other devices to exchange data. The communication interface 53 can include an interface for wired and / or wireless communication.

[0079] One or more computer program instructions may be stored in the memory 52 , and the processor 51 may read and execute these computer program instructions to implement the method provided in the embodiment of the present application.

[0080] Understandably, Figure 8 The structure shown is for illustration only. The electronic device may also include Figure 8 More or fewer components as shown, or with Figure 8 Different structures are shown. Figure 8 The components shown in the figure can be implemented by hardware, software or a combination thereof. The electronic device may be a physical device, such as a PC, a laptop, a tablet computer, a mobile phone, a server, an embedded device, etc., or a virtual device, such as a virtual machine, a virtualized container, etc. Moreover, the electronic device is not limited to a single device, but may also be a combination of multiple devices or a cluster consisting of a large number of devices.

[0081] The present application also provides a computer-readable storage medium on which computer program instructions are stored. When the computer program instructions are read and executed by a computer processor, the method provided by the present application is executed. For example, the computer-readable storage medium can be implemented as Figure 8 A memory 52 in an electronic device.

[0082] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0083] In addition, the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0084] Furthermore, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0085] In this document, relational terms such as first and second, etc. are used merely to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0086] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A crown rotation detection device, characterized in that: It includes a light emitting unit, a light receiving unit and a table axis; The table axis is arranged above the light-emitting unit, and the table axis is arranged in a horizontal direction; The light-emitting unit is arranged along a first horizontal direction to receive the light; A conical structure is arranged on the table shaft, the central axis of the conical structure coincides with the central axis of the table shaft, and the top of the conical structure faces a first horizontal direction; The light emitting unit emits detection light vertically toward the side of the table axis; The conical surface of the conical structure is used to receive the detection light emitted by the light-emitting unit and reflect the detection light to the light-receiving unit; The light receiving unit is used to receive the detection light reflected by the conical surface of the conical structure, and obtain the rotation angle of the watch axis according to the change of the light characteristics of the received detection light; wherein the light characteristics of the detection light reflected by the conical surface are related to the rotation position of the watch axis.

2. The device according to claim 1, characterized in that There are n conical structures on the table axis, the central axis of each conical structure coincides with the central axis of the table axis, the top of each conical structure faces the horizontal first direction, and the tops and bottoms of two adjacent conical structures are connected; wherein n is a positive integer greater than or equal to 2.

3. The device according to claim 2, characterized in that The cone angle of each cone structure is the same.

4. The device according to claim 2, characterized in that The n conical structures have cone angles that gradually decrease from left to right.

5. The device according to claim 2, characterized in that The n conical structures have cone angles that gradually increase from left to right.

6. The device according to claim 1, characterized in that The plane of the light-sensing area of ​​the light-receiving unit is inclined at a set angle to the horizontal first direction, and the set angle is greater than 0 degrees and less than 90 degrees.

7. The device according to claim 6, characterized in that A hinge structure is provided between the light emitting unit and the light receiving unit, and the hinge structure is used to adjust the tilt angle of the light receiving unit.

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