Vehicle-mounted light source azimuth angle recognition device and method and vehicle

Abstract

The invention relates to a vehicle-mounted light source azimuth angle recognition device and method and a vehicle, and relates to the technical field of light source azimuth angle recognition. The vehicle-mounted light source azimuth angle recognition device comprises a shell, a photosensitive device array and a detection circuit. A light hole is formed in the shell; the photosensitive device array is arranged on the inner wall, away from the light hole, in the shell so that light can form light spots irradiating the photosensitive device array through the light hole. The detection circuit is connected with the photosensitive device array and used for detecting the imaging position of the light spot and determining the azimuth angle of the light source according to the imaging position. On the basis of a pinhole imaging principle, light rays can form light spots on the photosensitive device array in the shell through the light holes. And detecting specific imaging positions of the light spots on the photosensitive device array through a detection circuit, wherein each imaging position corresponds to a unique light source azimuth angle. Therefore, the azimuth angle of the light source can be accurately measured by detecting the imaging position.

Description

Technical Field

[0001] The present application relates to the technical field of light source azimuth angle recognition, and in particular to a vehicle-mounted light source azimuth angle recognition device, method, and vehicle. Background Art

[0002] With the increasing demand for vehicle comfort and intelligence, the application of dimming materials allows vehicle glass to change its transmittance through voltage regulation. Combined with external environment sensing technology to identify light intensity, it can automatically adjust transmittance for intelligent sunshade. Furthermore, if localized glass dimming is required, accurate measurement of the relative position of the sun and the vehicle is required.

[0003] Currently, navigation systems can be used to obtain vehicle longitude and latitude information, and combined with the current time to calculate the absolute position of the sun. The vehicle's heading is then determined using navigation data, ultimately determining the vehicle's relative position to the sun. However, using navigation systems to determine the solar phase and direction can lead to anomalies or delays in navigation signals, making it impossible to obtain longitude, latitude, and heading information in real time. This can lead to errors in the calculated solar azimuth angle. Therefore, finding a more accurate way to identify the azimuth angle of a light source is a pressing issue. Summary of the Invention

[0004] An embodiment of the present application provides a vehicle-mounted light source azimuth angle recognition device to more accurately identify the light source azimuth angle, thereby at least partially solving the above-mentioned technical problems.

[0005] In order to achieve the above-mentioned object, according to a first aspect of the present application, a vehicle-mounted light source azimuth angle recognition device is provided, comprising: A housing, wherein a light-transmitting hole is formed in the housing; A photosensitive device array is arranged on an inner wall of the housing away from the light-transmitting hole, so that the light passes through the light-transmitting hole to form a light spot irradiated on the photosensitive device array; A detection circuit is connected to the photosensitive device array and is used to detect the imaging position of the light spot and determine the azimuth angle of the light source according to the imaging position.

[0006] Optionally, the shell is a hollow structure, comprising a cover plate and a space enclosure extending downward from an edge of the cover plate, wherein the space enclosure is a space structure that is contracted toward a side away from the cover plate; The light-transmitting hole is provided on the cover plate, and the photosensitive device array is distributed on a side of the space enclosure facing the light-transmitting hole.

[0007] Optionally, the cover plate is circular, the space enclosure is hemispherical to match the cover plate, the light-transmitting hole is opened at the center of the cover plate, and the photosensitive device array is fittedly arranged on the side of the space enclosure facing the light-transmitting hole so that the distance between any position of the photosensitive device array and the light-transmitting hole is the same.

[0008] Optionally, the interior of the shell is filled with a transparent filler.

[0009] Optionally, the photosensitive device array includes a plurality of photosensitive components arranged in an array; The photosensitive elements in each row are connected in series in sequence, and the first photosensitive element in each row is connected to a voltage source and the last photosensitive element is grounded; the connection nodes of adjacent photosensitive elements are connected to the detection circuit to detect the equivalent impedance of each photosensitive element through the detection circuit, and determine the imaging position of the light spot based on the equivalent impedance.

[0010] Optionally, a power selector is also included; The power selector includes an input terminal connected to the voltage source and a plurality of output terminals respectively connected to the first photosensitive element in each row of the photosensitive elements.

[0011] Optionally, the detection circuit includes a controller, which includes multiple reading ends respectively connected to each of the connection nodes, so as to respectively read the voltage values at the connection nodes at both ends of each of the photosensitive components, and obtain the equivalent impedance of each of the photosensitive components based on the voltage values at the connection nodes at both ends of each of the photosensitive components.

[0012] Optionally, the detection circuit further includes a plurality of data selectors; Each of the data selectors includes an output end connected to the read end of the controller and several input ends respectively connected to the connection nodes located in the same column, and is used to control the conduction between one of the connection nodes in the same column and the read end of the controller at the same time.

[0013] Optionally, the shell is installed inside the vehicle body shell and is fitted with the vehicle body shell. A light-collecting hole corresponding to the light-transmitting hole is opened on the vehicle body shell, so that the light passes through the light-collecting hole and the light-transmitting hole to form a light spot on the photosensitive device array.

[0014] Optionally, a protective cover is further provided on the vehicle body shell, and the protective cover is slidably provided at the light-collecting hole so that the protective cover covers the light-collecting hole or exposes the light-collecting hole.

[0015] According to a second aspect of the present application, a method for identifying the azimuth angle of an on-board light source is provided, which is used to implement the above-mentioned on-board light source azimuth angle identification device, wherein the photosensitive device array includes a plurality of photosensitive components arranged in an array; the method comprises: Obtaining the equivalent impedance of each of the photosensitive components; Determining a target photosensitive component with the smallest equivalent impedance from among the photosensitive components according to the equivalent impedance; The coordinates of the target photosensitive component are used as the imaging position of the light spot, and the azimuth angle of the light source is determined according to the imaging position.

[0016] Optionally, obtaining the equivalent impedance of each photosensitive component includes: Obtaining a voltage value of a connection node between every two adjacent photosensitive components; The equivalent impedance of each photosensitive component is obtained according to the voltage value of the connection node at both ends of each photosensitive component.

[0017] Optionally, determining the azimuth angle of the light source according to the imaging position includes: The azimuth angle of the light source is obtained by querying a preset mapping table according to the imaging position; wherein the preset mapping table includes a correspondence between the coordinates of each photosensitive component and the offset angle between the photosensitive component and the light-transmitting hole; the offset angle is equal to the azimuth angle.

[0018] According to a third aspect of the present application, a vehicle is provided, comprising the above-mentioned vehicle-mounted light source azimuth angle recognition device.

[0019] In summary, in the vehicle-mounted light source azimuth angle recognition device of the embodiment of the present application, a light-transmitting hole is provided in the housing, and a photosensor array is disposed on the inner wall of the housing, away from the light-transmitting hole. Based on the principle of pinhole imaging, light passing through the light-transmitting hole forms a light spot on the photosensor array within the housing. A detection circuit is then connected to the photosensor array to detect the specific imaging position of the light spot on the photosensor array. Each imaging position corresponds to a unique light source azimuth angle. In this way, by detecting the imaging position, the azimuth angle of the light source can be accurately measured.

[0020] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0021] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same drawing numbers represent the same parts in the following description.

[0022] Figure 1 is a schematic structural diagram of a vehicle-mounted light source azimuth angle recognition device provided in an exemplary embodiment of the present disclosure; Figure 2 is a schematic diagram of an array arrangement of photosensitive devices provided in an exemplary embodiment of the present disclosure; Figure 3 is a schematic diagram of a usage scenario of the vehicle-mounted light source azimuth angle recognition device provided in an exemplary embodiment of the present disclosure; Figure 4 is a schematic diagram of a detection circuit provided in an exemplary embodiment of the present disclosure; Figure 5 is a schematic diagram of a 5×5 arrangement of a photosensitive device array provided in an exemplary embodiment of the present disclosure; Figure 6 4 is a flow chart of a method for identifying the azimuth angle of a vehicle-mounted light source provided in an exemplary embodiment of the present disclosure.

[0023] Explanation of the accompanying drawings: 1. Shell; 11. Cover; 12. Space enclosure; 13. Light-transmitting hole; 14. Transparent filler; 2. Photosensitive device array; 3. Detection circuit; 31. Controller; 32. Data selector; 4. Power selector; 5. Vehicle body shell; 51. Lighting hole; 52. Protective cover. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0025] According to the first aspect of this application, referring to Figure 1 and Figure 2 The present disclosure provides a vehicle-mounted light source azimuth angle recognition device, comprising a housing 1, a photosensor array 2, and a detection circuit 3. The housing 1 has a light-transmitting hole 13 formed therein; the photosensor array 2 is disposed on an inner wall of the housing 1, away from the light-transmitting hole 13, so that light passing through the light-transmitting hole 13 forms a light spot on the photosensor array 2; the detection circuit 3 is connected to the photosensor array 2 and is configured to detect the imaging position of the light spot and determine the azimuth angle of the light source based on the imaging position.

[0026] The light-transmitting aperture 13 allows light from the light source to pass through, forming a light source on the photosensor array 2. The light source is generated based on the pinhole imaging principle, which states that when light passes through the light-transmitting aperture 13, an inverted real image is formed on the photosensor array 2 behind the light-transmitting aperture 13. Because light propagates in a straight line in a uniform medium, light from each point on the light source, after passing through the pinhole, is projected onto the photosensor array 2 along a straight path, forming an image similar in shape to the light source, but inverted upside down and left to right.

[0027] The light source may be any point light source, for example, the light source may be the sun, thereby achieving measurement of the azimuth angle of the sun.

[0028] As an example, light-transmitting aperture 13 can be circular, which helps increase the clarity of the light spot formed by the pinhole imaging. The size of light-transmitting aperture 13 can be between 0.1 mm and 1 mm and can be set according to actual conditions. For example, if a clearer light spot is required to increase resolution, the size of light-transmitting aperture 13 can be reduced. If the brightness of the light spot needs to be increased to facilitate measurement by detection circuit 3, the size of light-transmitting aperture 13 can be increased.

[0029] Combine Figure 3 For example, due to different orientations of the light source, the propagation paths of the light emitted by it are also different, and the position of the resulting light spot on the photosensor array 2 will also change accordingly. By detecting the imaging position of the light spot on the photosensor array 2 using the detection circuit 3, the azimuth angle of the light source can be deduced based on the rectilinear propagation characteristics of light. For example, a corresponding relationship between the imaging position and the azimuth angle of the light source can be established to measure the azimuth angle of the light source.

[0030] In the above embodiment, the housing 1 is provided with a light-transmitting aperture 13, and the photosensor array 2 is disposed on the inner wall of the housing 1, away from the light-transmitting aperture 13. Based on the principle of pinhole imaging, light passing through the light-transmitting aperture 13 forms a light spot on the photosensor array 2 within the housing 1. A detection circuit 3 is then connected to the photosensor array 2 to detect the specific imaging position of the light spot on the photosensor array 2. Each imaging position corresponds to a unique azimuth angle of the light source. Thus, by detecting the imaging position, the azimuth angle of the light source can be accurately measured.

[0031] Furthermore, the azimuth angle of the light source is measured without the need to obtain the vehicle's longitude and latitude information, making the azimuth angle measurement unaffected by navigation system instability. Furthermore, compared to methods that determine azimuth angles using longitude and latitude information, the light source is not limited to the sun; it can be any point-like light source, broadening its application range.

[0032] In some embodiments, the housing 1 is a hollow structure comprising a cover plate 11 and a space enclosure 12 extending downward from the edge of the cover plate 11. The space enclosure 12 is a spatial structure that converges toward a side away from the cover plate 11. A light-transmitting hole 13 is defined in the cover plate 11, and the photosensitive device array 2 is distributed on the side of the space enclosure 12 facing the light-transmitting hole 13.

[0033] The housing 1 is made of a material with a certain mechanical strength, such as plastic or stainless steel, so as to provide support for the internal photosensitive device array 2 , so that the photosensitive device array 2 can be distributed in the shape of the spatial enclosure 12 .

[0034] The housing 1 is filled with a transparent filler 14. The transparent filler 14 has the same shape as the housing 1 and is smaller than the housing 1. The transparent filler 14 protects the through-hole and, to a certain extent, prevents rainwater, dust, and the like from entering the housing 1. For example, the transparent filler 14 can be made of glass, which does not affect the rectilinear propagation of light.

[0035] In the above embodiment, the space enclosure 12 is a space structure that is retracted toward the side away from the cover plate 11, and the photosensitive device array 2 is distributed on the side of the space enclosure 12 facing the light-transmitting hole 13, so that light can pass through the light-transmitting hole 13 and transmit a certain distance in the hollow part of the shell 1 to form a light spot on the photosensitive device array 2. By controlling the distance that the light is transmitted in the hollow part of the shell 1, the light spot on the photosensitive device array 2 can be adjusted to an appropriate size.

[0036] In some embodiments, the cover 11 is circular, the space enclosure 12 is hemispherical to match the cover 11, the light-transmitting hole 13 is opened at the center of the cover 11, and the photosensitive device array 2 is arranged on the side of the space enclosure 12 facing the light-transmitting hole 13 so that the distance between any position of the photosensitive device array 2 and the light-transmitting hole 13 is the same.

[0037] For example, when the cover plate 11 is circular and the spatial enclosure 12 is hemispherical, the incident distance and illuminated area of light from different incident angles to the photosensor array 2 are the same, thereby ensuring the same measurement sensitivity for light at each incident angle. If the spatial enclosure 12 is an ellipsoid or a cube, the incident distance and illuminated area of light from different incident angles to the photosensor array 2 cannot be guaranteed to be the same. In this case, although the approximate azimuth of the light source can be measured, the measurement accuracy will be lower than that of a hemispherical spatial enclosure 12.

[0038] Reference Figure 2In some embodiments, the photosensitive device array 2 includes a plurality of photosensitive elements arranged in an array; the photosensitive elements in each row are connected in series in sequence, and the first photosensitive element in each row is connected to a voltage source and the last photosensitive element is grounded; the connection nodes of adjacent photosensitive elements are connected to a detection circuit 3, so that the equivalent impedance of each photosensitive element is detected by the detection circuit 3, and the imaging position of the light spot is determined according to the equivalent impedance.

[0039] The imaging position can be represented by the coordinates of the photosensitive elements in the photosensitive device array 2 , where the coordinates of the photosensitive elements refer to the number of rows and columns of the photosensitive elements in the photosensitive device array.

[0040] Among them, the photosensitive components are arranged at equal intervals on the spatial enclosure 12. The number of photosensitive components can be adjusted according to actual conditions. If higher accuracy in measuring the azimuth angle is required, the number of photosensitive components can be increased. If lower accuracy is required for measuring the azimuth angle, a sparser arrangement can be selected. The photosensitive components can be photoresistors, photodiodes, or phototransistors. It is only necessary to ensure that the photosensitive components are sensitive to light intensity and can convert light intensity into electrical signals. The equivalent impedance of photoresistors, photodiodes, and phototransistors is negatively correlated with light intensity. The greater the light intensity, the smaller the equivalent resistance.

[0041] In some embodiments, a power selector 4 is further included; the power selector 4 includes an input terminal connected to a voltage source and a plurality of output terminals respectively connected to the first photosensitive element in each row of photosensitive elements.

[0042] In the above embodiment, the input of power selector 4 is connected to a voltage source, and the multiple outputs are connected to the first photosensitive component in each row of photosensitive components. At any given time, power selector 4 only connects the input to one of the outputs, so that at any given moment, the voltage source only powers one row of photosensitive components. This allows a single voltage source to sequentially power each row of photosensitive components through time-division multiplexing, eliminating the need for a separate voltage source for each row of photosensitive components and reducing costs.

[0043] In some embodiments, the detection circuit 3 includes a controller 31, which includes multiple reading terminals respectively connected to each connection node to respectively read the voltage values at the connection nodes at both ends of each photosensitive component, and obtain the equivalent impedance of each photosensitive component based on the voltage values at the connection nodes at both ends of each photosensitive component.

[0044] As an example, after power is applied to a row of photosensors, the photosensors in that row collectively divide the output voltage of the voltage source. In the absence of light, the equivalent impedance of each photosensor is the same, resulting in the same voltage drop. Controller 31 reads the voltage values of the connection nodes between the photosensors in that row and stores these values. Similarly, the voltage values of all connection nodes are obtained. For example, power is applied to the first row of photosensors. Controller 31 reads the voltage values of the connection nodes in the first row: V(i, 1), V(i, 2), ..., V(i, i-1), where i represents the number of rows and columns of photosensors. Then, the power supply to the photosensitive components in the first row is stopped, and the power supply to the photosensitive components in the second row is turned on. The voltage values V(i-1,1), V(i-1,2), ..., V(i-1,i-1) of each connection node in the first row are read through the controller 31 until the photosensitive components in all rows are turned on, thereby obtaining the voltage values of all connection nodes, which can be expressed as V(a,b); where a=b=1, 2, 3, ..., i-1.

[0045] In some embodiments, the detection circuit 3 also includes several data selectors 32; each data selector 32 includes an output end connected to the reading end of the controller 31 and several input ends respectively connected to the connection nodes located in the same column, which are used to control the conduction between one of the connection nodes in the same column and the reading end of the controller 31 at the same time.

[0046] The number of data selectors 32 is equal to the number of columns of connected nodes. Figure 4 , Figure 4 The schematic diagram shows a 5×5 arrangement of the photosensitive device array 2 and four data selectors 32 .

[0047] As an example, the data selector 32 can control the conduction between the corresponding connection node and the reading end of the controller 31 based on the conduction status of the power selector 4. For example, when the power selector 4 begins to power the first row of photosensitive components, during the duration of the power supply to the first row of photosensitive components, the various data selectors 32 work together. First, the first data selector 32 conducts between the input end and the output end connected to the connection node of the first row and first column, so that the connection node of the first row and first column is connected to the first reading end of the controller 31. At this time, the controller 31 can obtain the voltage value of the connection node of the first row and first column. At the same time, the second data selector 32 conducts between the input end and the output end connected to the connection node of the first row and second column, so that the connection node of the first row and second column is connected to the second reading end of the controller 31. At this time, the controller 31 can obtain the voltage value of the connection node of the first row and second column. Similarly, at the same moment, each data selector 32 correspondingly turns on the connection nodes in different columns of the first row, thereby enabling the controller 31 to obtain the voltage values V(i, 1), V(i, 2), ..., V(i, i-1) of all the connection nodes in the first row during the duration of power supply to the first row of photosensitive components. Subsequently, the power selector 4 switches to powering the second row of photosensitive components. During the duration of power supply to the second row of photosensitive components, the first data selector 32 turns on the input terminal connected to the connection node in the first column of the second row and the output terminal, thereby connecting the connection node in the first column of the second row to the first reading terminal of the controller 31. At this time, the controller 31 can obtain the voltage value of the connection node in the first column of the second row. Similarly, the controller 31 can obtain the voltage values V(i-1, 1), V(i-1, 2), ..., V(i-1, i-1) of all the connection nodes in the second row during the duration of power supply to the second row of photosensitive components. This cycle continues until the power selector 4 completes powering all rows of photosensitive components. The data selector 32 can accurately transmit the voltage values of the connection nodes of the corresponding rows and columns to the controller 31 during each row power supply period, so that the controller 31 obtains the voltage values of all connection nodes.

[0048] In the above embodiment, each data selector 32 is used to control the conduction between one of the connection nodes in the same column and the reading end of the controller 31 at the same time. By setting multiple data selectors 32, the connection nodes in the same row and different columns can be controlled to transmit voltage values to the controller 31 at the same time. In this way, the reading end of the controller 31 can be reused, thereby saving the pin resources of the controller 31.

[0049] Reference Figure 3In some embodiments, the shell 1 is installed inside the vehicle body shell 5 and is fitted with the vehicle body shell 5. A light-transmitting hole 51 corresponding to the light-transmitting hole 13 is opened on the vehicle body shell 5, so that light passes through the light-transmitting hole 51 and the light-transmitting hole 13 to form a light spot on the photosensitive device array 2.

[0050] By way of example, the vehicle body shell 5 can be a door, A-pillar, B-pillar, C-pillar, or roof. The A-pillars are the pillars on either side of the front windshield connecting the front of the vehicle to the roof. The B-pillars are the pillars located between the front and rear doors supporting the roof. The C-pillars are the pillars on either side of the rear windshield connecting the rear of the vehicle to the roof. The cover plate 11 of the housing 1 can be connected to the vehicle body shell 5 by gluing, welding, or other methods.

[0051] In some embodiments, a protective cover 52 is further provided on the vehicle body shell 5 , and the protective cover 52 is slidably provided at the light-collecting hole 51 so that the protective cover 52 covers the light-collecting hole 51 or exposes the light-collecting hole 51 .

[0052] Reference Figure 5 The present disclosure exemplarily describes the working process of the vehicle-mounted light source azimuth angle recognition device. Figure 5 Take, for example, a 5×5 arrangement of photosensors in array 2. The 5×5 photosensors are distributed within an angle range of -40° to 40° centered on light-transmitting aperture 13. The photosensors in the third row and third column face light-transmitting aperture 13, and all photosensors are arranged with equal spacing. The first column of photosensors indicates an x-axis offset angle of -40°, the second column indicates an x-axis offset angle of -20°, the third column indicates an x-axis offset angle of 0°, the fourth column indicates an x-axis offset angle of 20°, and the fifth column indicates an x-axis offset angle of 40°. At the same time, the first row of photoresistors indicates that the offset angle of the y-axis is 40°, the second row of photoresistors indicates that the offset angle of the y-axis is 20°, and so on, thereby obtaining the correspondence between the coordinates of the photosensitive component and the offset angle between the photosensitive component and the light-transmitting hole 13. The correspondence between the coordinates of the photosensitive component and the offset angle between the photosensitive component and the light-transmitting hole 13 can be stored as a preset mapping table so that the offset angle can be queried after the imaging position is determined, thereby obtaining the azimuth angle of the light source.

[0053] For example, if the controller 31 determines that the equivalent impedance of the photosensor in the third row and third column is the minimum, then the imaging position is the third row and third column, and the corresponding solar azimuth angle (x, y) = (0°, 0°). Furthermore, if the controller 31 determines that the equivalent impedance of the photosensor in the first row and second column is the minimum, then the imaging position is the first row and second column, and the solar azimuth angle (x, y) = (-20°, 40°). This allows the azimuth angle of the light source to be measured.

[0054] Reference Figure 6 According to the second aspect of the present application, a method for identifying the azimuth angle of a vehicle-mounted light source is provided, which is used to implement the above-mentioned vehicle-mounted light source azimuth angle identification device. The photosensitive device array 2 includes a plurality of photosensitive components arranged in an array; the method includes steps S10 to S30, which are described in detail below.

[0055] Step S10: Obtain the equivalent impedance of each photosensitive component.

[0056] Step S20: determining a target photosensitive component with the minimum equivalent impedance from among the photosensitive components according to the equivalent impedance.

[0057] As an example, since there is a negative correlation between the light intensity of a photosensitive component and its equivalent impedance, the target photosensitive component with the smallest equivalent impedance is used to determine the photosensitive component at the light spot position.

[0058] Step S30: taking the coordinates of the target photosensitive component as the imaging position of the light spot, and determining the azimuth angle of the light source according to the imaging position.

[0059] In the above embodiment, the equivalent impedance of each photosensitive component is obtained, and the target photosensitive component is determined by utilizing the characteristic that the light intensity of the photosensitive component is negatively correlated with the equivalent impedance, and the coordinates of the target photosensitive component are used as the light spot imaging position to obtain the azimuth angle of the light source according to the pinhole imaging principle.

[0060] In some embodiments, step S10 may include steps S101 and S102, which are described in detail below.

[0061] Step S101: obtaining the voltage value of the connection node between every two adjacent photosensitive components.

[0062] Step S102: Obtaining the equivalent impedance of each photosensitive component according to the voltage value of the connection node at both ends of each photosensitive component.

[0063] In some embodiments, step S30 can obtain the azimuth angle of the light source from a preset mapping table according to the imaging position; wherein the preset mapping table includes the correspondence between the coordinates of each photosensitive component and the offset angle between the photosensitive component and the light-transmitting hole 13; the offset angle is equal to the azimuth angle.

[0064] The vehicle-mounted light source azimuth angle recognition method includes the above-mentioned vehicle-mounted light source azimuth angle recognition device. The vehicle-mounted light source azimuth angle recognition method has all the beneficial effects of the above-mentioned vehicle-mounted light source azimuth angle recognition device, and this disclosure will not repeat them here.

[0065] According to a third aspect of the present application, a vehicle is provided, comprising the above-mentioned vehicle-mounted light source azimuth angle recognition device.

[0066] The vehicle may be a fuel vehicle, a plug-in hybrid vehicle, a new energy vehicle, etc., and this disclosure does not make any specific limitations on this.

[0067] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0068] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0069] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other unless there is any conflict.

[0070] The above are merely preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A vehicle-mounted light source azimuth angle recognition device, characterized in that: include: A housing, wherein a light-transmitting hole is formed in the housing; A photosensitive device array is arranged on an inner wall of the housing away from the light-transmitting hole, so that light passes through the light-transmitting hole to form a light spot irradiated on the photosensitive device array; A detection circuit is connected to the photosensitive device array and is used to detect the imaging position of the light spot and determine the azimuth angle of the light source according to the imaging position.

2. The vehicle-mounted light source azimuth angle recognition device according to claim 1, characterized in that: The shell is a hollow structure, including a cover plate and a space enclosure extending downward from the edge of the cover plate, and the space enclosure is a space structure that is contracted toward a side away from the cover plate; The light-transmitting hole is provided on the cover plate, and the photosensitive device array is distributed on a side of the space enclosure facing the light-transmitting hole.

3. The vehicle-mounted light source azimuth angle recognition device according to claim 2, characterized in that: The cover plate is circular, the space enclosure is hemispherical and matches the cover plate, the light-transmitting hole is opened at the center of the cover plate, and the photosensitive device array is fitted on the side of the space enclosure facing the light-transmitting hole so that the distance between any position of the photosensitive device array and the light-transmitting hole is the same.

4. The vehicle-mounted light source azimuth angle recognition device according to any one of claims 1 to 3, characterized in that: The interior of the shell is filled with transparent filler.

5. The vehicle-mounted light source azimuth angle recognition device according to claim 3, characterized in that: The photosensitive device array includes a plurality of photosensitive components arranged in an array; The photosensitive elements in each row are connected in series in sequence, and the first photosensitive element in each row is connected to a voltage source and the last photosensitive element is grounded; the connection nodes of adjacent photosensitive elements are connected to the detection circuit to detect the equivalent impedance of each photosensitive element through the detection circuit, and determine the imaging position of the light spot based on the equivalent impedance.

6. The vehicle-mounted light source azimuth angle recognition device according to claim 5, characterized in that: Also includes a power selector; The power selector includes an input terminal connected to the voltage source and a plurality of output terminals respectively connected to the first photosensitive element in each row of the photosensitive elements.

7. The vehicle-mounted light source azimuth angle recognition device according to claim 5, characterized in that: The detection circuit includes a controller, which includes multiple reading ends respectively connected to each of the connection nodes, so as to respectively read the voltage values at the connection nodes at both ends of each of the photosensitive components, and obtain the equivalent impedance of each of the photosensitive components based on the voltage values at the connection nodes at both ends of each of the photosensitive components.

8. The vehicle-mounted light source azimuth angle recognition device according to claim 7, characterized in that: The detection circuit also includes a number of data selectors; Each of the data selectors includes an output end connected to the read end of the controller and several input ends respectively connected to the connection nodes located in the same column, and is used to control the conduction between one of the connection nodes in the same column and the read end of the controller at the same time.

9. The vehicle-mounted light source azimuth angle recognition device according to claim 1, characterized in that: The shell is installed inside the vehicle body shell and is fitted with the vehicle body shell. A light-collecting hole corresponding to the light-transmitting hole is opened on the vehicle body shell, so that the light passes through the light-collecting hole and the light-transmitting hole to form a light spot irradiated on the photosensitive device array.

10. The vehicle-mounted light source azimuth angle recognition device according to claim 9, characterized in that: The vehicle body shell is further provided with a protective cover, which is slidably arranged at the light-collecting hole so that the protective cover covers the light-collecting hole or exposes the light-collecting hole.

11. A method for identifying the azimuth angle of a vehicle-mounted light source, characterized in that: For implementing the vehicle-mounted light source azimuth angle recognition device according to any one of claims 1 to 10, the photosensitive device array includes a plurality of photosensitive components arranged in an array; the method includes: Obtaining the equivalent impedance of each of the photosensitive components; Determining a target photosensitive component with the smallest equivalent impedance from among the photosensitive components according to the equivalent impedance; The coordinates of the target photosensitive component are used as the imaging position of the light spot, and the azimuth angle of the light source is determined according to the imaging position.

12. The method for identifying the azimuth angle of a vehicle-mounted light source according to claim 11, wherein: The obtaining of the equivalent impedance of each of the photosensitive components includes: Obtaining a voltage value of a connection node between every two adjacent photosensitive components; The equivalent impedance of each photosensitive component is obtained according to the voltage value of the connection node at both ends of each photosensitive component.

13. The method for identifying the azimuth angle of a vehicle-mounted light source according to claim 12, wherein: Determining the azimuth angle of the light source according to the imaging position includes: The azimuth angle of the light source is obtained by querying a preset mapping table according to the imaging position; wherein the preset mapping table includes a correspondence between the coordinates of each photosensitive component and the offset angle between the photosensitive component and the light-transmitting hole; the offset angle is equal to the azimuth angle.

14. A vehicle, characterized in that: It comprises the vehicle-mounted light source azimuth angle recognition device as described in any one of claims 1 to 10.

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