Vehicle lamp module integrating UWB anchor points, vehicle lamp assembly and vehicle

Abstract

The invention relates to vehicle UWB positioning equipment, and provides a vehicle lamp module integrating UWB anchor points, a vehicle lamp assembly and a vehicle, the vehicle lamp module comprises the UWB anchor points and a vehicle lamp module, the UWB anchor points are arranged on the vehicle lamp module, each UWB anchor point comprises a control module (1) and an antenna (2), the antenna is electrically connected to the control module (1), and the control module (1) is electrically connected to the vehicle lamp assembly. And the antenna (2) is integrated on a plastic part in the automobile lamp module. The UWB anchor points are integrated in the vehicle lamp module, metal plate interference on signals is less, the position of the vehicle lamp module located on the vehicle is high, and the probability of signal loss is reduced. In addition, the invention further provides a vehicle lamp assembly and a vehicle.

Description

Technical Field

[0001] The present invention relates to a vehicle UWB positioning device, and specifically, to a headlight module integrated with a UWB anchor. In addition, it also relates to a headlight assembly and a vehicle. Background Art

[0002] Currently, digital car keys have brought great convenience to car owners and have gradually become the mainstream development direction of car keys. After the emergence of UWB (ultra wide band) technology, due to its extremely high security performance that cannot be relayed attacked, it has become the darling of the digital key field.

[0003] Essentially, digital keys are to achieve touchless unlocking of vehicles. However, due to its high positioning accuracy, UWB technology can provide more vehicle applications. Usually, UWB positioning anchors are installed in the vehicle, and positioning functions are realized based on technical paths such as TOF (time of flight), AOA (angle of arrival), RSSI (Received Signal Strength Indication), TOA (time of arrival), and TDOA (time difference of arrival). At the same time, because UWB technology can perform accurate ranging, its application scenarios can also be extended to practical functions such as kick switches and living body detection.

[0004] To implement the UWB positioning function based on the TOF principle, usually at least three anchors are required. Since these anchors need to consider avoiding the problem of multipath reflection, during the vehicle design process, there are more restrictions on the body sheet metal design near the UWB anchor. In the prior art, the installation position of the UWB anchor is behind the bumper, and the surrounding sheet metal parts will have a certain interference on it. Moreover, it is located at a relatively low position on the vehicle body, and this position is easily blocked by other vehicles or the human body, resulting in signal loss. For the single-anchor solution, the anchor position is inside the vehicle, and it will also be affected by the ABC pillars, which will also affect the precise positioning of UWB. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide a headlight module integrated with a UWB anchor, integrating the UWB anchor inside the headlight module, with less sheet metal interference on the signal, and the headlight module is located at a relatively high position on the vehicle, reducing the probability of signal loss.

[0006] The second technical problem to be solved by the present invention is to provide a headlight assembly, integrating the UWB anchor inside the headlight module, with less sheet metal interference on the signal, and the headlight module is located at a relatively high position on the vehicle, reducing the probability of signal loss.

[0007] The technical problem to be solved by the third aspect of the present invention is to provide a vehicle, in which the UWB anchor is integrated inside the headlight module, the signal is less interfered by sheet metal, and the position height of the headlight module on the vehicle is relatively high, reducing the probability of signal loss.

[0008] To solve the above technical problem, the first aspect of the present invention provides a headlight module integrated with a UWB anchor, including a UWB anchor and a headlight module. The UWB anchor is disposed on the headlight module. The UWB anchor includes a control module and an antenna. The antenna is electrically connected to the control module and is integrated on a plastic component inside the headlight module.

[0009] In some embodiments, the control module includes an integrated circuit board integrated with a UWB chip and a driving circuit, and the integrated circuit board is disposed on the plastic component.

[0010] In some embodiments, the integrated circuit board is provided with an antenna clearance area, and the antenna is integrated in the antenna clearance area.

[0011] In some embodiments, the antenna and the integrated circuit board are integrated at different positions on the same plastic component, or the antenna and the integrated circuit board are integrated on different plastic components. The headlight module further includes a flexible connection line, and the antenna is connected to the control module through the flexible connection line.

[0012] In some embodiments, the antenna is a circuit board type antenna, and the circuit board type antenna includes one or more of a ceramic antenna, a PCB antenna, and an FPC antenna.

[0013] In some embodiments, the antenna is a visual antenna formed on the surface of the plastic component, and the visual antenna includes an LDS antenna and / or a 3D printed antenna.

[0014] In some embodiments, the plastic component is a transparent plastic part, and the antenna is a transparent antenna disposed on the plastic component.

[0015] In some embodiments, the antenna includes at least two of a UWB positioning antenna, a UWB living body detection antenna, and a UWB kick radar antenna to form an array antenna, and the driving circuit is used to select an antenna in the array antenna to switch the antenna function.

[0016] In some embodiments, the integrated circuit board and the plastic component are integrally injection molded parts.

[0017] In some embodiments, an LED driving module and / or an image processing module are further included, and the control module is integrated on the LED driving module or the image processing module.

[0018] In a second aspect of the present invention, there is provided a vehicle headlamp assembly, including the headlamp module integrated with the UWB anchor point according to any one of the above technical solutions.

[0019] In a third aspect of the present invention, there is provided a vehicle, including the headlamp module integrated with the UWB anchor point or the vehicle headlamp assembly according to the above technical solutions.

[0020] Through the above solutions, the beneficial effects of the present invention are as follows:

[0021] For the headlamp module integrated with the UWB anchor point of the present invention, the UWB anchor point is provided on the headlamp module, and the antenna of the UWB anchor point is integrated on the plastic part inside the headlamp module. The plastic part corresponding to the antenna part is less interfered by metal parts. Therefore, the antenna of the UWB anchor point can avoid the problem of multipath reflection, and the headlamp module is located at a relatively high position on the vehicle and is not easily blocked by other vehicles or human bodies, avoiding the problem of signal loss. In application scenarios with many surrounding interference sources such as parking lots and multi-storey parking garages, it will have better positioning performance.

[0022] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification, and are used to explain the present invention together with the following specific implementation manners, but do not constitute a limitation to the present invention. In the drawings:

[0024] Figure 1 is a schematic structural diagram of an integrated circuit board;

[0025] Figure 2 is a schematic structural diagram of an integrated injection molded part of the integrated circuit board and the plastic part in the headlamp module integrated with the UWB anchor point of the present invention;

[0026] Figure 3 is a schematic structural diagram in which the control module and the antenna are separately arranged;

[0027] Figure 4 is a layout schematic diagram of the first implementation manner in which the control module and the antenna are separately arranged;

[0028] Figure 5 is a layout schematic diagram of the second implementation manner in which the control module and the antenna are separately arranged;

[0029] Figure 6 is a schematic structural diagram of a transparent antenna;

[0030] Figure 7 is a layout schematic diagram of the third implementation manner in which the control module and the antenna are separately arrangedFigure 1 ;

[0031] Figure 8 It is a layout schematic diagram of the third implementation manner in which the control module and the antenna are separately arranged. Figure 2 ;

[0032] Figure 9 It is a layout schematic diagram of the array antenna.

[0033] Description of the reference numerals

[0034] 1. Control module; 101. Integrated circuit board; 102. UWB chip; 103. Antenna clearance area; 104. Standard drive circuit board; 2. Antenna; 201. FPC antenna; 202. Visualization antenna; 203. Transparent antenna; 203-1. Resin film; 203-2. Metal wire; 203-3. Transparent adhesive layer; 204. UWB positioning antenna; 205. UWB living body detection antenna; 206. UWB kick radar antenna; 3. Coaxial cable; 4. Coaxial cable connector; 5. External light distribution mirror; 6. Internal light distribution mirror; 7. Plastic decorative ring. Specific implementation manners

[0035] The following will describe in detail the specific implementation manners of the present invention with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only used to illustrate and explain the present invention, and the protection scope of the present invention is not limited to the following specific implementation manners.

[0036] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, terms such as "formed", "provided with", "arranged", "connected", etc. should be understood in a broad sense. For example, the connection can be a direct connection, or an indirect connection through an intermediate medium, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate connector, it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0037] The first aspect of the present invention provides a headlight module with integrated UWB anchor point, including a UWB anchor point and a headlight module, wherein the UWB anchor point is arranged on the headlight module, and the UWB anchor point includes a control module 1 and an antenna 2, wherein the antenna 2 is electrically connected to the control module 1, and the antenna 2 is integrated on a plastic component in the headlight module, wherein the plastic component includes a plastic decorative ring, a plastic structural member, and an optical projection unit / optical module decorative ring and other headlight plastic parts without metal covering on the outside. Thus, the problem of multipath reflection of the antenna 2 of the UWB anchor point can be effectively avoided, and since there are fewer sheet metal parts around the vehicle where the headlight module is located, the signal interference to the antenna 2 is also weak; at the same time, the vehicle where the headlight module is located is located at a higher place, and is not easily blocked by other vehicles or human bodies, thereby avoiding the problem of signal loss, and having better positioning performance in application scenarios with more surrounding interference sources such as parking lots and multi-story parking garages.

[0038] In some specific implementations, the portion of the plastic component corresponding to the antenna 2 may be provided with no metal or high dielectric constant material as far as possible, so as to further prevent the signal of the UWB anchor point from being interfered.

[0039] There are various ways to set up the control module 1 and the antenna 2, for example, see Figure 1 and Figure 2 The control module 1 and the antenna 2 are integrated into one piece. The control module 1 includes an integrated circuit board 101 with a UWB chip 102 and a driving circuit. The integrated circuit board 101 is provided with an antenna clearance area 103. The antenna 2 is integrated in the antenna clearance area 103, thereby improving the integration of the UWB anchor point. The integrated circuit board 101 is set on a plastic component. Specifically, as Figure 2 As shown, the integrated circuit board 101 can be arranged on the plastic bezel 7. A layer of plastic cover can be arranged on the upper surface of the integrated circuit board 101 to make it invisible, so as not to affect the aesthetics of the headlight; or the integrated circuit board 101 can be arranged on the invisible part of the plastic bezel 7, which also avoids affecting the aesthetics of the headlight. In addition, when the integrated circuit board 101 is in the assembly position, the position of the integrated circuit board 101 where the antenna clearance area 103 is located should be more inclined to the side of the headlight cover to reduce the interference of the metal components on the integrated circuit board 101 to the antenna 2. Among them, the antenna 2 integrated in the integrated circuit board 101 can be a ceramic antenna or a PCB (printed circuit board) antenna.

[0040] As a preferred embodiment, the above-mentioned integrated circuit board 101 can be integrally injection molded with the plastic component. The injection molding method can adopt plastic insert injection molding or epoxy resin potting, so as to improve the connection reliability between the integrated circuit board 101 and the plastic component, and can effectively avoid the relative position of the antenna 2 and the plastic component changing during the use of the vehicle, thereby affecting the positioning accuracy.

[0041] As another alternative setting method for the control module 1 and the antenna 2, the control module 1 and the antenna 2 are separately arranged, so that the antenna 2 can be externally placed separately. Since the volume of the antenna 2 is smaller than that of the control module 1, its layout method is more flexible, and because the distance from the control module 1 is relatively far, therefore, the received signal interference is less and the signal will be better. A flexible connecting line is arranged between the control module 1 and the antenna 2, and the antenna 2 is connected to the control module 1 through this flexible connecting line to facilitate the layout between the two. See Figure 3 , the control module 1 can be a standard drive circuit board 104, and an antenna interface is reserved, such as an IPEX interface (coaxial connector 4). This flexible connector is preferably a coaxial cable 3, so as to realize the signal transmission between the antenna 2 and the control module 1, and the coaxial cable 3 basically has no radiation loss and will not be interfered by external signals, so it is convenient to separately arrange the control module 1 and the antenna 2.

[0042] As the first implementation manner of the separate arrangement of the control module 1 and the antenna 2, the antenna 2 is a circuit board type antenna, such as a ceramic antenna, a PCB antenna, and an FPC (flexible printed circuit) antenna, etc. Among them, the ceramic antenna can be directly connected to the coaxial cable 4, or the ceramic antenna can be pasted on a small PCB and connected to the coaxial cable 3 through an IPEX interface; the PCB antenna or the FPC antenna can be connected to the drive through the IPEX wire harness connected thereto. The ceramic antenna, the PCB antenna, and the FPC antenna can all be installed on a plastic part by means of screws, thermal riveting, snap connection, bonding, etc. This plastic part is preferably a plastic trim ring 7. See Figure 3 and Figure 4 , further preferably, the antenna 2 is an FPC antenna 201. Since the FPC antenna 201 has flexibility, it can better fit on the curved surface, can reduce the occupancy of the installation space, and is more beautiful.

[0043] As the second implementation manner of the separate arrangement of the control module 1 and the antenna 2, see Figure 5, the antenna 2 is a visual antenna 202 formed on the surface of a plastic component. The visual antenna 202 includes an LDS antenna or a 3D printed antenna. The LDS antenna controls the movement of a laser according to the trajectory of a conductive pattern by a computer, projects the laser onto the plastic component, and thus activates a circuit pattern. The 3D printed antenna prints a circuit pattern on the surface of the plastic component through 3D metal printing technology. The LDS antenna, the 3D printed antenna and the plastic component are integrally formed into an integrated structural form. Therefore, there is no need for an additional circuit board as a carrier, further reducing the occupation of the internal installation space of the headlight module by the antenna 2, and directly connecting to the standard drive circuit board 104 through the coaxial cable 3. In addition, the LDS antenna and the 3D printed antenna can be arranged in the edge area of the outer light distribution lens 5. On the premise of not affecting the light distribution performance of the outer light distribution lens 5, the position of the antenna 2 is closer to the outside of the headlight and farther from the metal and circuit board inside the headlight, with less signal interference. Moreover, the circuit patterns of the LDS antenna and the 3D printed antenna are arranged in the edge area of the outer light distribution lens 5, and the patterns have a certain aesthetic feeling, thus not affecting the overall aesthetics of the headlight. The LDS antenna and the 3D printed antenna can also be arranged on the outer light distribution lens 5 or the inner light distribution lens 6. This application is not limited thereto.

[0044] It should be noted that the area where the headlight module is least interfered by metal parts is the area where the light distribution lens is located, especially the central area of the light distribution lens. In order to further reduce the signal interference to the antenna 2 without affecting the light distribution performance of the light distribution lens, as the third implementation manner in which the control module 1 and the antenna 2 are separately arranged, the antenna 2 is a transparent antenna 203 arranged on the light distribution lens. See Figure 6 , the transparent antenna 203 includes a resin film 203-1, a metal wire 203-2 and a transparent adhesive layer 203-3. The metal wire 203-2 is a thin metal wire that is invisible to the human eye, and the metal wire 203-2 has good flexibility and can adapt to the curved surface of the light distribution lens to form a good fit. The metal wire 203-2 is arranged in a grid pattern to form a circuit pattern, and the resin film 203-1 is used to encapsulate it to prevent the formed circuit pattern from changing, and the transparent adhesive layer 203-3 is pasted on the surface of the light distribution lens. The resin film 203-1 is formed of a resin with transparency, and the transparent adhesive layer 203-3 can be formed by a transparent adhesive. In addition, the light distribution lens is divided into an outer light distribution lens 5 and an inner light distribution lens 6. Preferably, see Figure 7, the transparent antenna 203 is disposed on the inner surface of the central region of the outer light distribution lens 5, so as to minimize the signal interference problem to the greatest extent. Of course, the above-mentioned adhesion of the transparent antenna 203 to the outer light distribution lens 5 is only a preferred embodiment, and this application is not limited thereto. Without affecting the signal of the transparent antenna 203, the transparent antenna 203 can be adhered to any plastic part. For example, the transparent antenna 203 can also be disposed on the outer surface of the inner light distribution lens 6, that is, adhered to the lens surface of the optical module, so as to realize the modular design integrated with the optical module. The specific setting form should be determined according to the actual design requirements.

[0045] For the three embodiments in which the control module 1 and the antenna 2 are separately arranged, since the control module 1 does not need to be integrated with the antenna 2, the control module 1 can be arranged at the positions of different components of the vehicle lamp module according to the setting requirements. And the vehicle lamp module is provided with an LED driving module and / or an image processing module. In order to improve the integration degree, the control module 1 can be integrated on the LED driving module or the image processing module, or the three can be integrated on the same circuit board, so as to reduce the overall volume and reduce the layout of the installation structure, which is convenient for subsequent installation.

[0046] In addition, based on the fact that UWB can realize multiple functions, such as realizing the UWB positioning function, the living body detection function and the kick radar function, and for different UWB functions, different types of antennas 2 need to be selected, namely the UWB positioning antenna 204, the UWB living body detection antenna 205 and the UWB kick radar antenna 206. Different types of antennas can be flexibly selected according to the vehicle requirements. Of course, the antenna 2 can also be an array antenna, and at least two of the UWB positioning antenna 204, the UWB living body detection antenna 205 and the UWB kick radar antenna 206 are selected to form an array antenna, so as to realize different UWB functions, and the antenna function can be switched by driving the circuit to select the antenna in the array antenna. For example, see Figure 9 , the antenna 2 includes a UWB positioning antenna 204, a UWB living body detection antenna 205 and a UWB kick radar antenna 206, and the three UWB antennas are all arranged within the same vehicle lamp module (for example, different antennas can be arranged on the same component or different components inside the same lamp), so as to realize different UWB functions.

[0047] It should be noted that since UWB emits radio frequency signals, it is necessary to avoid signal interference caused by components with metal or materials with high dielectric constant as much as possible. The vehicle lamp module integrating UWB anchors in the present invention is preferably the headlamp module and the taillight module of the vehicle, mainly arranged at the four top corners of the vehicle, with fewer surrounding metal parts, and the installation positions of the vehicle lamps are all at higher places, not easily blocked by other vehicles or humans, thus avoiding the problem of signal loss. Therefore, the UWB function is provided through the vehicle lamps, and has better UWB signals. In addition, integrating the UWB anchors within the vehicle lamp module has a high integration degree, can reduce the components and wire harness length of the whole vehicle, and can effectively reduce the cost of the whole vehicle.

[0048] The second aspect of the present invention provides a vehicle lamp assembly, including the vehicle lamp module integrating UWB anchors provided in the first aspect of the present invention. Therefore, it has all the beneficial effects thereof and will not be elaborated herein.

[0049] The third aspect of the present invention provides a vehicle, including the vehicle lamp module integrating UWB anchors provided in the first aspect of the present invention or the vehicle lamp assembly provided in the second aspect of the present invention. Therefore, it has all the beneficial effects thereof and will not be elaborated herein.

[0050] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0051] In addition, it should be noted that in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods.

[0052] In addition, any combination can be made between different embodiments of the present invention as long as it does not violate the idea of the present invention, and it should also be regarded as the content disclosed by the present invention.

Claims

1. An automotive headlight module integrated with a UWB anchor, characterized in that, It includes a UWB anchor and a vehicle headlight module. The UWB anchor is arranged on the vehicle headlight module. The UWB anchor includes a control module (1) and an antenna (2). The antenna is electrically connected to the control module (1), and the antenna (2) is integrated on a plastic component inside the vehicle headlight module.

2. The headlight module integrated with a UWB anchor according to claim 1, characterized in that, The control module (1) includes an integrated circuit board (101) integrated with a UWB chip (102) and a driving circuit. The integrated circuit board (101) is arranged on the plastic component.

3. The headlight module integrated with the UWB anchor according to claim 2, wherein The integrated circuit board (101) is provided with an antenna clearance area (103), and the antenna (2) is integrated in the antenna clearance area (103).

4. The vehicle lamp module integrated with the UWB anchor according to claim 2, characterized in that, The antenna (2) and the integrated circuit board (101) are integrated at different positions of the same plastic component, or the antenna (2) and the integrated circuit board (101) are integrated on different plastic components. The vehicle headlight module further includes a flexible connecting wire, and the antenna (2) is connected to the control module (1) through the flexible connecting wire.

5. The vehicle headlight module integrated with a UWB anchor according to claim 4, characterized in that, The antenna (2) is a circuit board type antenna, and the circuit board type antenna includes one or more of a ceramic antenna, a PCB antenna, and an FPC antenna (201).

6. The vehicle lamp module integrated with a UWB anchor according to claim 4, characterized in that, The antenna (2) is a visual antenna (202) formed on the surface of the plastic component, and the visual antenna (202) includes an LDS antenna and / or a 3D printed antenna.

7. The vehicle headlight module integrated with a UWB anchor according to claim 4, wherein The antenna (2) is a transparent antenna (203) arranged on the plastic component.

8. The vehicle headlight module integrated with a UWB anchor according to claim 2, wherein, The antenna (2) includes at least two of a UWB positioning antenna (204), a UWB living body detection antenna (205), and a UWB kick radar antenna (206) to form an array antenna. The driving circuit is used to select an antenna in the array antenna to switch the antenna function.

9. The vehicle lamp module integrated with a UWB anchor according to any one of claims 2 to 8, characterized in that, The integrated circuit board (101) and the plastic component are an integrally injection molded part.

10. The vehicle lamp module integrated with a UWB anchor according to any one of claims 2 to 8, characterized in that It further includes an LED driving module and / or an image processing module, and the control module (1) is integrated on the LED driving module or the image processing module.

11. A vehicle lamp assembly, characterized in that, It includes a vehicle headlight module integrated with the UWB anchor according to any one of claims 1-10.

12. A vehicle, characterized in that, It includes a vehicle headlight module integrated with the UWB anchor according to any one of claims 1-10 or a vehicle headlight assembly according to claim 11.

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