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

Abstract

The application 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-transmitting hole is formed in the shell; the photosensitive device array is arranged on the inner wall of the shell away from the light-transmitting hole, so that light forms a light spot on the photosensitive device array through the light-transmitting hole. The detection circuit is connected with the photosensitive device array, is used for detecting the imaging position of the light spot, and determines the azimuth angle of the light source according to the imaging position. According to the pinhole imaging principle, the light passes through the light-transmitting hole and forms a light spot on the photosensitive device array in the shell. Then, the detection circuit detects the specific imaging position of the light spot on the photosensitive device array, and each imaging position corresponds to a unique light source azimuth angle. In this way, the imaging position is detected, and the azimuth angle of the light source can be accurately measured.

Description

TECHNICAL FIELD

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

[0002] With the increasing demand for vehicle comfort and intelligent level, the application of dimming materials enables vehicle glass to change the light transmittance by voltage adjustment, and in combination with the vehicle external environment sensing technology to identify the light intensity, to realize automatic adjustment of light transmittance for intelligent sunshade. Further, if local glass dimming is required, accurate measurement of the relative azimuth between the sun and the vehicle is required.

[0003] Currently, the vehicle latitude and longitude information can be obtained by using a navigation system, and the absolute azimuth of the sun is calculated in combination with the current time, and then the vehicle orientation is determined through navigation data, and the relative azimuth between the vehicle and the sun is obtained. However, the scheme of obtaining the azimuth of the sun through the navigation system may have abnormal or delayed navigation signals, so that the latitude and longitude and orientation information cannot be obtained in real time, and the calculated azimuth of the sun is deviated. Therefore, how to more accurately identify the azimuth of the light source is a problem to be solved at present. SUMMARY

[0004] The embodiment of the present application provides a vehicle-mounted light source azimuth angle recognition device to more accurately identify the azimuth of the light source, so as to at least partially solve the above technical problems.

[0005] In order to achieve the above purpose, according to the first aspect of the present application, a vehicle-mounted light source azimuth angle recognition device is provided, comprising:

[0006] A housing, a light-transmitting hole is formed on the housing;

[0007] A photosensitive device array is arranged on the inner wall of the housing away from the light-transmitting hole, so that the light passing through the light-transmitting hole forms a light spot on the photosensitive device array;

[0008] A detection circuit connected with the photosensitive device array is used for detecting the imaging position of the light spot, and determining the azimuth angle of the light source according to the imaging position.

[0009] Optionally, the housing is a hollow structure, comprising a cover plate and a space enclosing body extending downward from the edge of the cover plate, and the space enclosing body is a space structure converging toward the side away from the cover plate;

[0010] The light-transmitting hole is formed on the cover plate, and the photosensitive device array is distributed on the side of the space enclosing body facing the light-transmitting hole.

[0011] Optionally, the cover plate is circular, the space enclosure is hemispherical matched with the cover plate, the light transmission hole is arranged at the center of the cover plate, and the photosensitive device array is arranged on the side of the space enclosure facing the light transmission hole, so that the distance between any position of the photosensitive device array and the light transmission hole is the same.

[0012] Optionally, the shell is filled with a transparent filler.

[0013] Optionally, the photosensitive device array comprises a plurality of arrayed photosensitive devices.

[0014] Each row of the photosensitive devices is connected in series, the first photosensitive device of each row is connected with a voltage source, and the last photosensitive device is grounded; and the connection nodes of adjacent photosensitive devices are connected with the detection circuit, so as to detect the equivalent impedance of each photosensitive device through the detection circuit, and determine the imaging position of the light spot according to the equivalent impedance.

[0015] Optionally, the power selector is further included.

[0016] The power selector comprises an input end connected with the voltage source and a plurality of output ends respectively connected with the first photosensitive device of each row of the photosensitive devices.

[0017] Optionally, the detection circuit comprises a controller, the controller comprises a plurality of reading ends respectively connected with the connection nodes, so as to read the voltage value of the connection nodes between each photosensitive device, and obtain the equivalent impedance of each photosensitive device according to the voltage value of the connection nodes between each photosensitive device.

[0018] Optionally, the detection circuit further comprises a plurality of data selectors.

[0019] Each data selector comprises an output end connected with the reading end of the controller and a plurality of input ends respectively connected with the connection nodes in the same column, so as to control one of the connection nodes in the same column to be conductive with the reading end of the controller at the same time.

[0020] Optionally, the shell is arranged in the vehicle body shell and is matched with the vehicle body shell, a light hole corresponding to the light transmission hole is arranged on the vehicle body shell, so that the light passes through the light hole and the light transmission hole to form a light spot on the photosensitive device array.

[0021] Optionally, the vehicle body shell is further provided with a protective cover, the protective cover is arranged at the light hole in a sliding manner, so that the protective cover covers the light hole or exposes the light hole.

[0022] According to a second aspect of the present application, a vehicle-mounted light source azimuth angle identification method is provided for implementing the vehicle-mounted light source azimuth angle identification device described above. The photosensitive device array includes a plurality of arrayed photosensitive devices. The method includes:

[0023] obtaining the equivalent impedance of each photosensitive device;

[0024] determining a target photosensitive device with the minimum equivalent impedance from the photosensitive devices according to the equivalent impedance;

[0025] taking the coordinates of the target photosensitive device as the imaging position of the light spot, and determining the azimuth angle of the light source according to the imaging position.

[0026] Optionally, the obtaining of the equivalent impedance of each photosensitive device includes:

[0027] obtaining the voltage value of the connection node of each two adjacent photosensitive devices;

[0028] obtaining the equivalent impedance of each photosensitive device according to the voltage value of the connection node at both ends of the photosensitive device.

[0029] Optionally, the determining of the azimuth angle of the light source according to the imaging position includes:

[0030] querying the azimuth angle of the light source from a preset mapping table according to the imaging position; wherein the preset mapping table includes the corresponding relationship between the coordinates of each photosensitive device and the offset angle between the photosensitive device and the light transmission hole; the offset angle is equal to the azimuth angle.

[0031] According to a third aspect of the present application, a vehicle is provided, which includes the vehicle-mounted light source azimuth angle identification device described above.

[0032] In summary, in the vehicle-mounted light source azimuth angle identification device of the embodiments of the present application, the light transmission hole is formed on the shell, the photosensitive device array is arranged on the inner wall of the shell away from the light transmission hole, and based on the pinhole imaging principle, the light passing through the light transmission hole will form a light spot on the photosensitive device array in the shell. Then, the detection circuit is connected with the photosensitive device array, so as to detect the specific imaging position of the light spot on the photosensitive device array, and each imaging position corresponds to a unique light source azimuth angle. In this way, the imaging position is detected to accurately measure the azimuth angle of the light source.

[0033] Other features and advantages of the present application will be described in detail in the following specific implementation part. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description only show some of the embodiments of the present application, and all other drawings obtained by those skilled in the art without creative effort based on these drawings also belong to the protection scope of the present application.

[0035] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, wherein the same reference numerals in the following description represent the same parts.

[0036] Figure 1 is a structural schematic diagram of a vehicle-mounted light source azimuth angle recognition device provided in an exemplary embodiment of the present disclosure;

[0037] Figure 2 is a schematic diagram of an array arrangement of a photosensitive device provided in an exemplary embodiment of the present disclosure;

[0038] Figure 3 is a schematic diagram of a use scenario of a vehicle-mounted light source azimuth angle recognition device provided in an exemplary embodiment of the present disclosure;

[0039] Figure 4 is a schematic diagram of a detection circuit provided in an exemplary embodiment of the present disclosure;

[0040] Figure 5 is a schematic diagram of a 5x5 array arrangement of a photosensitive device provided in an exemplary embodiment of the present disclosure;

[0041] Figure 6 is a flowchart of a vehicle-mounted light source azimuth angle recognition method provided in an exemplary embodiment of the present disclosure.

[0042] Legend of reference numerals: 1, housing; 11, cover plate; 12, space enclosure; 13, light transmission hole; 14, transparent filler; 2, photosensitive device array; 3, detection circuit; 31, controller; 32, data selector; 4, power supply selector; 5, vehicle body shell; 51, light collecting hole; 52, protective cover. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort also belong to the protection scope of the present application.

[0044] According to the first aspect of the present application, with reference to Figure 1 and Figure 2The present disclosure provides a vehicle-mounted light source azimuth angle recognition device, comprising a shell 1, a photosensitive device array 2 and a detection circuit 3. The shell 1 is provided with a light-transmitting hole 13. The photosensitive device array 2 is arranged on the inner wall of the shell 1 away from the light-transmitting hole 13, so that the light passing through the light-transmitting hole 13 forms a light spot on the photosensitive device array 2. The detection circuit 3 is connected with the photosensitive device array 2, used for detecting the imaging position of the light spot, and determining the azimuth angle of the light source according to the imaging position.

[0045] The light-transmitting hole 13 is used for the light emitted by the light source to pass through, so that the light forms a light source on the photosensitive device array 2. The light source is generated by the pinhole imaging principle. The pinhole imaging principle refers to that when the light passes through the light-transmitting hole 13, an inverted real image will be formed on the photosensitive device array 2 behind the light-transmitting hole 13. Since the light propagates in a straight line in a uniform medium, the light emitted by each point on the light source will project onto the photosensitive device array 2 according to the straight-line propagation path after passing through the pinhole, thereby forming an image similar to the shape of the light source but upside down.

[0046] The light source can be any point light source, for example, the light source can be the sun, so as to measure the azimuth angle of the sun.

[0047] As an example, the light-transmitting hole 13 can be circular, which is conducive to increasing the clarity of the light spot formed by the pinhole imaging. The size of the light-transmitting hole 13 can be between 0.1 mm and 1 mm, which can be set according to the actual situation. For example, if a clearer light spot is needed to increase the resolution, the size of the light-transmitting hole 13 can be reduced. If the brightness of the light spot needs to be increased to facilitate the measurement of the detection circuit 3, the size of the light-transmitting hole 13 can be increased.

[0048] In combination Figure 3 As an example, since the azimuth of the light source is different, the propagation path of the light emitted by the light source is also different, and the position of the light spot formed on the photosensitive device array 2 will also change accordingly. By detecting the imaging position of the light spot on the photosensitive device array 2 through the detection circuit 3, the azimuth angle of the light source can be derived according to the straight-line propagation characteristics of the 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.

[0049] In the above embodiment, the light-transmitting hole 13 is provided on the shell 1, and the photosensitive device array 2 is arranged on the inner wall of the shell 1 away from the light-transmitting hole 13. Based on the pinhole imaging principle, the light passing through the light-transmitting hole 13 will form a light spot on the photosensitive device array 2 in the shell 1. Then, the detection circuit 3 is connected with the photosensitive device array 2, so as to detect the specific imaging position of the light spot on the photosensitive device array 2. Each imaging position corresponds to a unique azimuth angle of the light source. In this way, the imaging position is detected, and the azimuth angle of the light source can be accurately measured.

[0050] In addition, in the process of measuring the azimuth angle of the light source, the latitude and longitude information of the vehicle does not need to be obtained, so that the measurement of the azimuth angle is not affected by the unstable factors of the navigation system. Moreover, compared with the method of obtaining the latitude and longitude information to determine the azimuth angle, the light source is not limited to the sun, but can be any point light source, and the application range is wider.

[0051] In some embodiments, the shell 1 is a hollow structure, including a cover plate 11 and a space enclosure 12 extending downward from the edge of the cover plate 11, the space enclosure 12 being a space structure converging toward the side away from the cover plate 11. A light transmission hole 13 is provided on the cover plate 11, and the photosensitive device array 2 is distributed on the side of the space enclosure 12 facing the light transmission hole 13.

[0052] The shell 1 is made of a material with certain mechanical strength, such as plastic or stainless steel, thereby providing support for the internal photosensitive device array 2, so that the photosensitive device array 2 can be distributed in the shape of the space enclosure 12.

[0053] The shell 1 is filled with a transparent filler 14. The shape of the transparent filler 14 is consistent with that of the shell 1, and the size is smaller than that of the shell 1. The transparent filler 14 can protect the light transmission hole and prevent rain, dust and other substances from entering the interior of the shell 1 to a certain extent. For example, the transparent filler 14 can be made of glass, which does not affect the straight-line propagation of light.

[0054] In the above embodiment, the space enclosure 12 is a space structure converging 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 transmission hole 13, so that the light can form a light spot on the photosensitive device array 2 after transmitting a distance in the hollow part of the shell 1 through the light transmission hole 13, and the distance of the light transmission in the hollow part of the shell 1 can be used to adjust the size of the light spot on the photosensitive device array 2.

[0055] In some embodiments, the cover plate 11 is circular, the space enclosure 12 is a hemisphere matched with the cover plate 11, the light transmission hole 13 is provided at the center of the cover plate 11, and the photosensitive device array 2 is arranged on the side of the space enclosure 12 facing the light transmission hole 13, so that the distance between any position of the photosensitive device array 2 and the light transmission hole 13 is the same.

[0056] As an example, when the cover plate 11 is circular and the space enclosure 12 is a hemisphere, the incident path and the irradiation area of the light from different incident angles to the photosensitive device array 2 are the same, thereby ensuring the same measurement sensitivity of the light from different incident angles. If the space enclosure 12 is an ellipsoid or a cube, etc., the incident path and the irradiation area of the light from different incident angles to the photosensitive device array 2 cannot be guaranteed to be the same, at this time, although the approximate azimuth angle of the light source can be measured, the measurement accuracy will be lower compared with the space enclosure 12 being a hemisphere.

[0057] Referring to Figure 2 In some embodiments, the photosensitive device array 2 comprises a plurality of photosensitive devices arranged in an array; the photosensitive devices in each row are connected in series, and the first photosensitive device in each row is connected to the voltage source and the last photosensitive device is grounded; the connection nodes of adjacent photosensitive devices are connected to the detection circuit 3 to detect the equivalent impedance of each photosensitive device through the detection circuit 3, and determine the imaging position of the light spot according to the equivalent impedance.

[0058] Wherein, the imaging position can be represented by the coordinates of the photosensitive devices in the photosensitive device array 2, and the coordinates of the photosensitive devices refer to the row number and column number of the photosensitive devices in the photosensitive device array.

[0059] Wherein, the photosensitive devices are arranged at equal intervals on the spatial enclosure 12. The number of photosensitive devices can be adjusted according to actual conditions. If higher accuracy of the measured azimuth angle is required, the number of photosensitive devices can be increased, and if the accuracy of the measured azimuth angle is relatively low, a relatively sparse arrangement can be selected. The photosensitive devices can be photosensitive resistors, photodiodes or phototransistors, as long as the photosensitive devices are sensitive to light intensity and can convert light intensity into electrical signals. The equivalent impedance of the photosensitive resistor, photodiode and phototransistor is negatively correlated with the light intensity, and the greater the light intensity, the smaller the equivalent resistance.

[0060] In some embodiments, a power selector 4 is further included; the power selector 4 comprises an input end connected to the voltage source and a plurality of output ends respectively connected to the first photosensitive device in each row of photosensitive devices.

[0061] In the above implementation, the input end of the power selector 4 is connected to the voltage source, and the plurality of output ends respectively correspond to the first photosensitive device in each row of photosensitive devices. At the same time, the power selector 4 will only connect the input end to one of the output ends, so that at any time, the voltage source only supplies power to one row of photosensitive devices. In this way, through the time division multiplexing mode, one voltage source can supply power to each row of photosensitive devices in turn, so that it is not necessary to provide an independent voltage source for each row of photosensitive devices, thereby reducing the cost.

[0062] In some embodiments, the detection circuit 3 comprises a controller 31, and the controller 31 comprises a plurality of reading ends respectively connected to the connection nodes, to read the voltage values at the connection nodes between each photosensitive device, and to obtain the equivalent impedance of each photosensitive device according to the voltage values at the connection nodes between each photosensitive device.

[0063] As an example, after a row of photosensitive elements is powered, the row of photosensitive elements collectively divides the output voltage of the voltage source, and in the absence of light irradiation, the equivalent impedance of each photosensitive element is the same, and the voltage drop is the same. The voltage value of the connection node between the row of photosensitive elements is read by the controller 31, and the voltage value is stored, and the voltage value of all connection nodes is obtained by analogy. For example, the first row of photosensitive elements is powered first, and the voltage values V(i, 1), V(i, 2), …, V(i, i-1) of each connection node of the first row are read by the controller 31, where i is the number of rows and columns of the photosensitive elements. Then stop powering the first row of photosensitive elements, power the second row of photosensitive elements, and read the voltage values V(i-1, 1), V(i-1, 2), …, V(i-1, i-1) of each connection node of the first row by the controller 31, and so on until all rows of photosensitive elements are powered, thereby obtaining the voltage values of all connection nodes, which can be represented as V(a, b); Where a = b = 1, 2, 3, …, i-1.

[0064] In some embodiments, the detection circuit 3 further comprises a plurality of data selectors 32; each data selector 32 comprises an output end connected with the reading end of the controller 31 and a plurality of input ends respectively connected with the connection nodes located in the same column, for controlling one of the connection nodes in the same column to be connected with the reading end of the controller 31 at the same time.

[0065] Wherein the number of data selectors 32 is equal to the number of columns of connection nodes. Referring to Figure 4 , Figure 4 A schematic diagram is shown in which the photosensitive element array 2 is arranged in 5x5, and the data selector 32 is provided with four.

[0066] As an example, the data selector 32 can control the conduction between the corresponding connection node and the reading end of the controller 31 according to the conduction of the power selector 4. For example, when the power selector 4 starts to supply power to the first row of light-sensitive elements, during the duration of the power supply to the first row of light-sensitive elements, each data selector 32 cooperates to first conduct between the input end and the output end connected to the connection node of the first row and the first column, so that the connection node of the first row and the 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 the 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 the second column, so that the connection node of the first row and the 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 the second column. In this way, at the same time, each data selector 32 corresponds to the conduction of the connection node of the different columns of the first row, so that the controller 31 can obtain the voltage values V(i, 1), V(i, 2), …, V(i, i-1) of all connection nodes of the first row during the duration of the power supply to the first row of light-sensitive elements. Subsequently, the power selector 4 switches to supply power to the second row of light-sensitive elements, during the duration of the power supply to the second row of light-sensitive elements, the first data selector 32 conducts between the input end and the output end connected to the connection node of the second row and the first column, so that the connection node of the second row and the 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 second row and the first column, and in turn, the controller 31 can obtain the voltage values V(i-1, 1), V(i-1, 2), …, V(i-1, i-1) of all connection nodes of the second row during the duration of the power supply to the second row of light-sensitive elements. In this way, the cycle continues until the power selector 4 completes the power supply to all rows of light-sensitive elements, and the data selector 32 can accurately transmit the voltage values of the connection nodes of each column of the corresponding row to the controller 31 during the power supply of each row, so that the controller 31 obtains the voltage values of all connection nodes.

[0067] In the above embodiment, each data selector 32 is used to control the conduction between one of the connection nodes of the same column and the reading end of the controller 31 at the same time, and by setting multiple data selectors 32, the connection nodes of the same row and different columns can be controlled to transmit voltage values to the controller 31 at the same time, so that the reading end of the controller 31 can be multiplexed, thereby saving the pin resources of the controller 31.

[0068] Reference Figure 3In some embodiments, the shell 1 is mounted inside and attached to the vehicle body shell 5, and a light collecting hole 51 corresponding to the light transmission hole 13 is formed on the vehicle body shell 5, so that the light passes through the light collecting hole 51 and the light transmission hole 13 to form a light spot on the photosensitive device array 2.

[0069] For example, the vehicle body shell 5 can be a door, an A-pillar, a B-pillar, a C-pillar or a roof. The A-pillar refers to the column connecting the front windshield to the roof on both sides, the B-pillar refers to the column supporting the roof between the front and rear doors, and the C-pillar refers to the column connecting the rear windshield to the roof on both sides. The cover plate 11 of the shell 1 can be connected to the vehicle body shell 5 by adhesion, welding or the like.

[0070] In some embodiments, the vehicle body shell 5 is also provided with a protective cover 52, which is slidingly arranged at the light collecting hole 51 to cover or expose the light collecting hole 51.

[0071] Referring to Figure 5 The working process of the vehicle-mounted light source azimuth recognition device is described exemplarily, Figure 5 For example, the 5x5 photosensitive device array 2 is arranged. The 5x5 photosensitive devices are distributed within the -40°~40° angle range with the light transmission hole 13 as the center, the third row and third column photosensitive device is directly opposite the light transmission hole 13, and all the photosensitive devices are arranged at equal intervals. The first column of photosensitive devices represents an x-axis offset angle of -40°, the second column of photosensitive devices represents an x-axis offset angle of -20°, the third column of photosensitive devices represents an x-axis offset angle of 0°, the fourth column of photosensitive devices represents an x-axis offset angle of 20°, and the fifth column of photosensitive devices represents an x-axis offset angle of 40°. At the same time, the first row of photosensitive resistors represents a y-axis offset angle of 40°, the second row of photosensitive resistors represents a y-axis offset angle of 20°, and so on, so as to obtain the correspondence between the coordinates of the photosensitive devices and the offset angles between the photosensitive devices and the light transmission hole 13. The correspondence between the coordinates of the photosensitive devices and the offset angles between the photosensitive devices and the light transmission hole 13 can be stored as a preset mapping table, so as to query the offset angle after determining the imaging position, thereby obtaining the azimuth of the light source.

[0072] For example, the controller 31 obtains that the equivalent impedance of the third row and third column photosensitive device is minimum, and the imaging position is the third row and third column, and the azimuth (x, y) of the sun corresponding to the imaging position is (0°, 0°). For example, the controller 31 obtains that the equivalent impedance of the first row and second column photosensitive device is minimum, and the imaging position is the first row and second column, and the azimuth (x, y) of the sun is (-20°, 40°). In this way, the azimuth of the light source can be measured.

[0073] Referring toFigure 6 According to a second aspect of the present application, a vehicle-mounted light source azimuth angle identification method is provided for implementing the vehicle-mounted light source azimuth angle identification device. The photosensitive device array 2 includes a plurality of arrayed photosensitive devices. The method includes steps S10-S30, which are described in detail below.

[0074] Step S10: Obtain the equivalent impedance of each photosensitive device.

[0075] Step S20: Determine the target photosensitive device with the minimum equivalent impedance from the photosensitive devices according to the equivalent impedance.

[0076] As an example, the target photosensitive device with the minimum equivalent impedance is determined as the photosensitive device for determining the spot position, since the light intensity of the photosensitive device is negatively correlated with the equivalent impedance.

[0077] Step S30: Take the coordinates of the target photosensitive device as the imaging position of the spot, and determine the azimuth angle of the light source according to the imaging position.

[0078] In the above embodiment, the equivalent impedance of each photosensitive device is obtained, the target photosensitive device is determined by using the characteristic that the light intensity of the photosensitive device is negatively correlated with the equivalent impedance, and the coordinates of the target photosensitive device are taken as the imaging position of the spot, so as to obtain the azimuth angle of the light source according to the pinhole imaging principle.

[0079] In some embodiments, step S10 can include steps S101-S102, which are described in detail below.

[0080] Step S101: Obtain the voltage value of the connection node of each two adjacent photosensitive devices.

[0081] Step S102: Obtain the equivalent impedance of the photosensitive device according to the voltage value of the connection node between each photosensitive device.

[0082] In some embodiments, step S30 can query the azimuth angle of the light source from a preset mapping table according to the imaging position; wherein the preset mapping table includes the corresponding relationship between the coordinates of each photosensitive device and the offset angle between the photosensitive device and the light transmission hole 13; the offset angle is equal to the azimuth angle.

[0083] The vehicle-mounted light source azimuth angle identification method includes the vehicle-mounted light source azimuth angle identification device described above. The vehicle-mounted light source azimuth angle identification method has all the beneficial effects of the vehicle-mounted light source azimuth angle identification device, and the present disclosure will not be repeated here.

[0084] According to a third aspect of the present application, a vehicle is provided, which includes the vehicle-mounted light source azimuth angle identification device described above.

[0085] The vehicle can be a fuel automobile, a plug-in hybrid electric vehicle, or a new energy vehicle, and the present disclosure does not make a specific limitation thereto.

[0086] In the description of the present application, the terms "first", "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0087] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0088] The embodiments, implementation manners and related technical features of the present application can be combined or replaced with each other without conflict.

[0089] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification, equivalent change and modification made to the above embodiment without departing from the technical solution of the present application and in accordance with the technical essence of the present application still falls 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 provided on the housing; A photosensitive device array is disposed on the inner wall of the housing away from the light-transmitting hole, so that light passing through the light-transmitting hole forms a light spot illuminating the photosensitive device array; the housing is a hollow structure, including a cover plate and a spatial enclosure extending downward from the edge of the cover plate. The cover plate is circular, and the spatial enclosure is a hemispherical shape that mates with the cover plate. The light-transmitting hole is located at the center of the cover plate. The photosensitive device array is fitted to the side of the spatial enclosure facing the light-transmitting hole, and light rays from different incident angles have the same incident path and irradiation area to the photosensitive device array; the photosensitive device array includes a plurality of photosensitive components arranged in an array. A detection circuit, connected to the photosensitive device array, is used to detect the imaging position of the light spot and determine the azimuth angle of the light source based on the imaging position. The connection nodes of adjacent photosensitive devices are connected to the detection circuit. The detection circuit includes a controller and several data selectors. Each data selector includes an output terminal connected to the read terminal of the controller and several input terminals respectively connected to the connection nodes located in the same column, used to simultaneously control one of the connection nodes in the same column to conduct between it and the read terminal of the controller. It also includes a power selector; the power selector includes an input terminal connected to a voltage source and multiple output terminals respectively connected to the first photosensitive element in each row of photosensitive elements, such that at any given time, the voltage source supplies power to only one row of photosensitive elements.

2. The vehicle-mounted light source azimuth angle recognition device according to claim 1, characterized in that, The enclosing space is a spatial structure that converges toward the side away from the cover plate; The light-transmitting hole is formed on the cover plate, and the photosensitive device array is distributed on the 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 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 a transparent filler.

5. The vehicle-mounted light source azimuth angle recognition device according to claim 3, characterized in that: The photosensitive components in each row are connected in series, with the first photosensitive component in each row connected to a voltage source and the last photosensitive component grounded. The connection nodes of adjacent photosensitive components are connected to the detection circuit, so that the equivalent impedance of each photosensitive component can be detected by the detection circuit, and the imaging position of the light spot can be determined based on the equivalent impedance.

6. The vehicle-mounted light source azimuth angle recognition device according to claim 5, characterized in that, The controller includes multiple reading terminals that are respectively connected to each of the connection nodes to read the voltage values ​​at the connection nodes at both ends of each photosensitive component, and to obtain the equivalent impedance of each photosensitive component based on the voltage values ​​at the connection nodes at both ends of each photosensitive component.

7. The vehicle-mounted light source azimuth angle recognition device according to claim 1, characterized in that, The housing is installed inside the vehicle body shell and fits snugly against the vehicle body shell. A light-collecting hole is provided on the vehicle body shell, corresponding to the light-transmitting hole, so that the light passes through the light-collecting hole and the light-transmitting hole to form a light spot that illuminates the photosensitive device array.

8. The vehicle-mounted light source azimuth angle recognition device according to claim 7, characterized in that, The vehicle body shell is also provided with a protective cover, which is slidably disposed at the light-transmitting hole so that the protective cover covers or exposes the light-transmitting hole.

9. 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 8, the photosensitive device array comprises a plurality of photosensitive components arranged in an array; the method includes: Obtain the equivalent impedance of each of the photosensitive components; The target photosensitive element with the smallest equivalent impedance is determined from all the photosensitive elements based on 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 based on the imaging position.

10. The method for identifying the azimuth angle of a vehicle-mounted light source according to claim 9, characterized in that: The process of obtaining the equivalent impedance of each photosensitive component includes: Obtain the voltage value of the connection node between every two adjacent photosensitive components; The equivalent impedance of the photosensitive element is obtained based on the voltage value of the connection node at both ends of each photosensitive element.

11. The vehicle-mounted light source azimuth angle recognition method according to claim 10, characterized in that: Determining the azimuth angle of the light source based on the imaging position includes: The azimuth angle of the light source is obtained by querying a preset mapping table based on the imaging position; wherein, the preset mapping table includes the correspondence between the coordinates of each photosensitive element and the offset angle between the photosensitive element and the light-transmitting hole; the offset angle is equal to the azimuth angle.

12. A vehicle, characterized in that: Includes the vehicle-mounted light source azimuth angle recognition device as described in any one of claims 1 to 8.

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