CN114750680B - System and method for controlling communication of car lamp - Google Patents
System and method for controlling communication of car lamp Download PDFInfo
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- CN114750680B CN114750680B CN202210425248.7A CN202210425248A CN114750680B CN 114750680 B CN114750680 B CN 114750680B CN 202210425248 A CN202210425248 A CN 202210425248A CN 114750680 B CN114750680 B CN 114750680B
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- 238000004891 communication Methods 0.000 title claims abstract description 94
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000003993 interaction Effects 0.000 claims abstract description 46
- 230000000712 assembly Effects 0.000 claims description 8
- 238000000429 assembly Methods 0.000 claims description 8
- 230000006855 networking Effects 0.000 claims description 8
- 230000003287 optical effect Effects 0.000 claims description 7
- 230000008054 signal transmission Effects 0.000 claims 1
- 230000006870 function Effects 0.000 description 7
- 108010076504 Protein Sorting Signals Proteins 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 5
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- 230000003044 adaptive effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q2400/00—Special features or arrangements of exterior signal lamps for vehicles
- B60Q2400/50—Projected symbol or information, e.g. onto the road or car body
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- Mechanical Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Projection Apparatus (AREA)
Abstract
The application relates to a system and a method for controlling communication of a car lamp. The system comprises: the vehicle lamp projection device comprises at least one vehicle lamp projection module, and each vehicle lamp projection module comprises a digital micro-mirror unit for displaying projection information; the car light control device comprises at least one control module, wherein the control module comprises a micro control unit and an information interaction unit, and the micro control unit is electrically connected with the digital micro mirror unit; the car light communication device is electrically connected with the information interaction unit of one control module. The method can improve the efficiency of acquiring projection data by the car lamp.
Description
Technical Field
The application relates to the technical field of automobile communication, in particular to a system and a method for controlling automobile lamp communication.
Background
In the conventional art, the vehicle lamp is mainly applied to an illumination scene. However, as technology is continuously updated, the demand for lamps is no longer limited to illumination, and thus DLP (Digital Light Processing ) technology is widely used in the lamp market. The DLP lamp includes a DLP controller and a DMD (Digital Micromirror Device ), and the DLP controller controls the DMD, such as power-on and power-off. The DLP technology converts an image signal into a digital signal to realize projection, so that not only can the DLP lamp realize illumination, but also the projection of various information can be realized through communication with an in-vehicle system, for example, the DLP lamp communicates with a CDC (cockpitdomain controller, a cabin controller) to project navigation information. However, at present, the control of the DLP lamp is realized by a DLP controller through a CAN (Controller Area Network ), the CAN is a bus type serial communication network, and if the DLP controller acquires projection data through the CAN, the problem that the communication time of the DLP lamp is too long and the aging is not satisfied CAN occur.
Disclosure of Invention
Based on the above, a system and a method for controlling communication of a car lamp are provided, so that the problem of low communication efficiency in the prior art is solved.
In one aspect, a system for vehicle lamp communication control is provided, the system comprising: the vehicle lamp projection device comprises at least one vehicle lamp projection module, and each vehicle lamp projection module comprises a digital micro-mirror unit for displaying projection information; the car light control device comprises at least one control module, wherein the control module comprises a micro control unit and an information interaction unit, and the micro control unit is electrically connected with the digital micro mirror unit; and the car light communication device is electrically connected with the information interaction unit.
In one embodiment, the electrical connection between the micro control unit and the digital micromirror unit includes a low voltage differential signal connection.
In one embodiment, the digital micromirror unit includes a plurality of micromirror assemblies with deflection angles and a storage assembly for storing the projection information, wherein the micromirror assemblies are connected with the storage assembly through addressing electrodes for controlling deflection of the micromirror assemblies, and the storage assembly is electrically connected with the micro control unit.
In one embodiment, the micro control unit transmits the projection information to the storage assembly through a low voltage differential signal to control the deflection angle of each micro mirror assembly through the address electrode.
In one embodiment, the system for controlling communication of the vehicle lamp further comprises: the car light projection module further comprises a projection control unit, and the micro control unit is connected with the projection control unit through an Ethernet.
In one embodiment, the micro control unit transmits the projection information to the control unit through ethernet, so that the control unit controls the digital micromirror unit to display the projection information.
In one embodiment, the electrical connection between the vehicle light communication device and the information interaction unit includes an ethernet connection, so as to perform information interaction through an address-based extensible service-oriented middleware communication protocol or a data distribution service communication protocol.
In one embodiment, the binary signal 0 transmitted by the low voltage differential signal corresponds to the light off state of the micromirror assembly, and the binary signal 1 corresponds to the light on state of the micromirror assembly.
In one embodiment, the car light communication device comprises a mobile data center module for providing automatic driving service, a car networking system module for providing interaction service between the car and the outside, and a cabin domain controller module for providing operation service, wherein the mobile data center module, the car networking system module and the cabin domain controller module are all connected with the information interaction unit through an Ethernet.
In another aspect, a method for controlling communication of a vehicle lamp is provided, the method comprising: receiving projection information from a car lamp communication device and generating a control signal of a micro mirror assembly according to the projection information; and adjusting the deflection angle of the micro-mirror assembly according to the control signal of the micro-mirror assembly so as to realize light opening and closing and display the projection information.
According to the system and the method for controlling the communication of the car lamp, the car lamp projection device comprises at least one car lamp projection module, and each car lamp projection module comprises a digital micro-mirror unit for displaying projection information; the car light control device comprises at least one control module, wherein the control module comprises a micro control unit and an information interaction unit, and the micro control unit is electrically connected with the digital micro mirror unit; and the car light communication device is electrically connected with the information interaction unit. And the information interaction unit in the car light control device performs information interaction with the car light communication device in an Ethernet mode to obtain projection information, and is connected with the digital micro-mirror unit through a low-voltage differential signal to control the digital micro-mirror unit to project so as to improve the efficiency of the car light for obtaining projection information and performing projection time.
Drawings
FIG. 1 is a schematic diagram of a system for controlling communication of a vehicle lamp in one embodiment;
FIG. 2 is a schematic diagram of the connection between a micro-control unit and a digital micromirror unit in one embodiment;
FIG. 3 is a schematic diagram of a micromirror unit according to one embodiment;
FIG. 4 is a schematic diagram of a system for controlling communication of a vehicle lamp in another embodiment;
FIG. 5 is a schematic diagram showing a structure of a lamp communication device in one embodiment;
fig. 6 is a flow chart of a method of vehicle lamp communication control in one embodiment.
The reference numerals are as follows:
1. an Ethernet network;
2. low voltage differential signal.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
It should be noted that, the illustrations provided in the present embodiment merely illustrate the basic concept of the present invention by way of illustration, and only the components related to the present invention are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complex.
The structures, proportions, sizes, etc. shown in the drawings attached hereto are for illustration purposes only and are not intended to limit the scope of the invention, which is defined by the claims, but rather by the claims.
References in this specification to orientations or positional relationships as "upper", "lower", "left", "right", "intermediate", "longitudinal", "transverse", "horizontal", "inner", "outer", "radial", "circumferential", etc., are based on the orientation or positional relationships shown in the drawings, are also for convenience of description only, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore are not to be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the existing car light communication control system, a CAN network is adopted to acquire projection data, but because the CAN network is a bus type serial communication network, the time for acquiring the projection data is long, and the time for acquiring the projection data is difficult to meet the requirement, therefore, the car light communication control system is provided, and comprises a car light projection device, wherein the car light projection device comprises at least one car light projection module, and each car light projection module comprises a digital micro mirror unit for displaying projection information; the car light control device comprises at least one control module, wherein the control module comprises a micro control unit and an information interaction unit, and the micro control unit is electrically connected with the digital micro mirror unit; and the car light communication device is electrically connected with the information interaction unit, wherein the car light communication device is connected with the information interaction unit in a connection mode through the Ethernet 1, so that the efficiency of acquiring projection data is improved.
In one embodiment, as shown in fig. 1, there is provided a system for communication control of a vehicle lamp, the system comprising:
the vehicle lamp projection device comprises at least one vehicle lamp projection module, and each vehicle lamp projection module comprises a digital micro-mirror unit for displaying projection information;
the car light control device comprises at least one control module, wherein the control module comprises a micro control unit and an information interaction unit, and the micro control unit is electrically connected with the digital micro mirror unit;
and the car light communication device is electrically connected with the information interaction unit.
The micro control unit is electrically connected with the digital micro mirror unit and comprises low-voltage differential signal connection, and the car lamp communication device is electrically connected with the information interaction unit and comprises Ethernet 1 connection.
The system is connected with the information interaction unit through the car lamp communication device by the Ethernet 1 to obtain projection information, and then the projection information is transmitted to the digital micro-mirror unit through the micro-control unit by the low-voltage differential signal 2 to realize the control of car lamp projection, so that the time efficiency of car lamp projection can be improved.
In order to enable the vehicle lamp to realize the projection function, a vehicle lamp with the projection function should be provided, and in a vehicle lamp projection device, an exemplary description is made, the vehicle lamp projection device includes at least one vehicle lamp projection module, each vehicle lamp projection module includes a digital micro mirror unit for displaying projection information, for example, the digital micro mirror unit may be a DMD, and the DMD controls rapid opening and closing of light projection through a received low-voltage differential signal 2 so as to display required projection information, thereby further improving response time and high resolution of projection.
The transmission and control of the projection information can be achieved by a lamp control device, which is exemplified to be a lamp control device for satisfying a domain centralized electronic electric architecture, and the lamp control device comprises at least one control module, the control module comprises a micro control unit and an information interaction unit, the micro control unit is electrically connected with the digital micro mirror unit, the lamp communication device is electrically connected with the information interaction unit, for example, the control module can comprise a VDC (Vehicle Domain Controller, a whole vehicle domain controller) and a VIU (Vehicle Intranet Unit, a vehicle intranet unit) in a vehicle, the VDC is connected with the digital micro mirror unit of a front lamp through a low voltage differential signal 2, the MCU (Micro Control Unit) of the VIU is connected with the digital micro mirror unit of a rear lamp through a low voltage differential signal 2, and the switch of the VDC is connected with the VIU and the lamp communication device through an ethernet 1. The VDC and the VIU are designed by adopting a software architecture of a Classic AUTOSAR, the application service, the combination service and the atomic service of the VDC can provide corresponding services for the car light communication device, the VIU and the digital micro-mirror unit of the front car light, the combination service and the atomic service of the VIU provide corresponding services for the VDC and the digital micro-mirror unit of the rear car light, and the VDC and the VIU call CDD (Complex Device Drivers, complex drive) to control and transmit projection data to the digital micro-mirror unit through RTE (Runtime Enviroment, real-time running environment), so that the device can improve the transmission efficiency of the projection data and meet the design requirements of the software architecture based on service.
The control of the digital micromirror unit is implemented by a control signal, and in one embodiment, as shown in fig. 2, the connection mode of the micro control unit and the digital micromirror unit is exemplarily illustrated to include a connection of a low voltage differential signal 2, for example, the low voltage differential signal 2 sends a binary signal sequence, the light on/off of the digital micromirror unit can be controlled by the low voltage differential signal 2, and projection information is displayed by the light on/off ratio of the digital micromirror unit.
The implementation of the projection function requires the provision of several mirrors for light reflection, and in one embodiment, as shown in fig. 3, a digital micromirror unit is provided, which comprises several micromirror components with deflection angles and a storage component for storing the projection information.
Illustratively, the digital micromirror unit includes a plurality of micromirror components with deflection angles and a storage component for storing the projection information, wherein the micromirror components are connected with the storage component through addressing electrodes for controlling the deflection of the micromirror components, the storage component is electrically connected with the micro control unit, for example, the digital micromirror unit can be a DMD, the DMD includes a plurality of micromirror components and the storage component, the storage component can be a RAM (Random Access Memory ), when the DMD works, negative bias voltage is applied to the DMD, the micromirror components can control the deflection angles through the addressing electrodes, the deflection angles are limited to +12°, -12° or +10°, -10°, when the RAM receives a binary signal sequence corresponding to the projection information transmitted through a low voltage differential signal 2, one addressing electrode is connected with +5v, 1 in the corresponding binary signal is grounded, 0 in the corresponding binary signal, the binary signal 1 controls the micromirror components to deflect +12° or +10°, light passes through the projection lens in the optical axis direction to form a bright image, and therefore, the micromirror components can deflect rapidly through the binary signal to form a plurality of pixels, and the micromirror components can deflect rapidly, thereby realize the projection.
In one embodiment, an implementation of angular deflection of a micromirror assembly is provided, comprising:
the micro control unit transmits the projection information to the storage component through a low-voltage differential signal so as to control the deflection angle of each micro mirror component through the addressing electrode.
Illustratively, the micro-control unit transmits the projection information to the storage component through a low-voltage differential signal to control the deflection angle of each micro-mirror component through the addressing electrode, for example, the micro-control unit may be an MCU in a VDC or a VIU, the digital micro-mirror unit may be a DMD, the DMD comprises a plurality of micro-mirror components and the storage component, the storage component may be a RAM, when the DMD works, a negative bias voltage is applied to the DMD, the micro-mirror components can control the deflection angle through the addressing electrode, the deflection angle is limited to +12°, -12 ° or +10°, -10 °, and when the RAM receives a binary signal sequence corresponding to the projection information transmitted through the low-voltage differential signal 2, one addressing electrode is connected with +5v, corresponding to 1 in the binary signal, the other addressing electrode is grounded, corresponding to 0 in the binary signal, the binary signal 1 controls the micro-mirror component to deflect +12° or +10°, light passes through the projection objective lens along the optical axis direction to form a bright pixel, and the binary signal 0 controls the micro-mirror component to deflect-12 ° or-10 ° light to pass through the projection objective lens, so that the micro-mirror can rapidly deflect the micro-mirror components, thereby realize the projection.
In one embodiment, as shown in fig. 4, there is provided a system for vehicle lamp communication control, the system further comprising:
the car light projection module further comprises a projection control unit, and the micro control unit is connected with the projection control unit through an Ethernet 1.
Illustratively, the vehicle lamp projection module further includes a projection control unit, where the micro control unit is connected with the projection control unit through the ethernet 1, for example, the vehicle lamp control module may be a VDC, and when the VDC is directly connected with the vehicle lamp projection module of the rear vehicle lamp and controls the projection of the rear vehicle lamp, the VDC adopts a software architecture design of a Classic automotive sar, the rear vehicle lamp adopts a DLP vehicle lamp, the projection control unit may be a DLP controller, and the digital micromirror unit may be a DMD. The MCU of VDC is connected with the car light projection module of the front car light through low-voltage differential signal, the control and the transmission projection data of the digital micro mirror unit are realized by calling CDD through RTE, the MCU of VDC is connected with the DLP controller of the DLP car light through Ethernet 1, the DLP controller is abstracted into local equipment in the VDC, the abstracted DLP controller and the DLP car light establish two-way service communication with the socket communication of the DLP controller of the rear car light in a socket communication mode through gigabit Ethernet 1, so the control information of the rear car light can be stored in the abstracted DLP controller, and the communication projection control of the DLP car light is carried out through the abstracted DLP controller.
When the communication between the lamp projection device, the lamp control device and the lamp communication device is performed through the ethernet 1, related services are mainly provided or acquired through a middleware protocol, in one embodiment, a communication manner is provided, and the lamp communication device is electrically connected with the information interaction unit and comprises the ethernet 1, so that information interaction is performed through an address-based extensible service-oriented middleware communication protocol or a data distribution service communication protocol.
Illustratively, the information interaction is performed through an address-based extensible service-oriented middleware communication protocol or a data distribution service communication protocol, for example, the vehicle lamp communication device adopts a service-oriented software architecture design, so that corresponding functions are serviced, and an SOME/IP (Scalable service-Oriented MiddlewarE over IP) or DDS (Data Distribution Service ) network is established in the vehicle lamp communication device and the vehicle lamp control device, so that the vehicle lamp communication device can provide or acquire corresponding services to the vehicle lamp control device.
In one embodiment, the micro control unit transmits the projection information to the control unit through an ethernet so that the control unit controls the digital micromirror unit to display the projection information.
Illustratively, the micro control unit transmits the projection information to the control unit through the ethernet, so that the control unit controls the digital micro mirror unit to display the projection information, for example, in the projection of the front light, the MCU in the VDC is in information interaction with the DLP controller of the front light through the ethernet 1, the DLP controller is abstracted into a local device in the VDC, the abstracted DLP controller and the DLP light establish two-way service communication with the socket of the DLP controller of the rear light through the gigabit ethernet 1 in the socket communication mode, so that the control information of the rear light can be stored in the abstracted DLP controller, so that the digital micro mirror unit is in communication projection control over the DLP light through the abstracted DLP controller, in the projection of the front light, the MCU of the VDC is connected with the lamp projection module of the front light through the low-voltage differential signal 2, and the CDD is invoked through the RTE to realize the control over the digital micro mirror unit and transmit projection data.
In one embodiment, the binary signal 0 transmitted by the low voltage differential signal corresponds to the light off state of the micromirror assembly, and the binary signal 1 corresponds to the light on state of the micromirror assembly.
Illustratively, the binary signal 0 transmitted by the low-voltage differential signal corresponds to the light-off state of the micromirror assembly, the binary signal 1 corresponds to the light-on state of the micromirror assembly, for example, the low-voltage differential signal 2 is transmitted by transmitting the projection information acquired by the lamp control device to the storage assembly of the lamp projection module in a binary signal sequence, wherein the binary signal 1 corresponds to the +5v address electrode, the micromirror assembly is angularly deflected by +12° or +10°, the light is imaged through the projection objective lens along the optical axis direction to form a bright pixel, the binary signal 0 corresponds to the grounded address electrode, the micromirror assembly is angularly deflected by-12 ° or-10 ° so that the light cannot pass through the projection lens, and therefore, a dark pixel is presented, so that the plurality of micromirror assemblies are rapidly deflected to turn on and off the light, thereby realizing the lamp projection.
In one embodiment, as shown in fig. 5, there is provided a vehicle lamp communication device including:
the system comprises a mobile data center module for providing automatic driving service, a car networking system module for providing interaction service between the car and the outside, and a cabin domain controller module for providing operation service, wherein the mobile data center module, the car networking system module and the cabin domain controller module are all connected with the information interaction unit through an Ethernet 1.
The different modules in the car light communication device correspondingly provide different services, for example, a mobile data center module for providing automatic driving service is illustrated, for example, the mobile data center module can be an MDC (Mobile Datacenter ) in a car, an adaptive auto sar software architecture design is adopted to service the automatic driving related function, and an SOME/IP or DDS network is established in a COM communication management service of an ARA (AUTOSAR Runtime for Adaptive Applications, adaptive auto sar runtime environment) through the ethernet 1, so that the related services of the MDC can be provided to other devices through the ARA.
Illustratively, the internet of vehicles system module providing the service of interaction between the vehicle and the outside is, for example, a TBOX (Telematics Box, internet of vehicles system) and is designed by adopting an adaptive AUTOSAR software architecture, so that the interaction between the vehicle and the outside is served, and an SOME/IP or DDS network is established in the COM communication management service of the ARA through the Ethernet 1, thus, the related service of the TBOX is provided for other devices through the ARA.
Illustratively, the cabin domain controller module providing the operation service may be, for example, CDC (Cockpitdomain Controller, cabin domain controller), and an android operating system or a hong-and-Monte operating system may be adopted, and the SOME/IP or DDS network is established with other devices through the transplanted SOME/IP or DDS protocol, so that relevant operation services of the CDC are provided to the other devices.
In one embodiment, as shown in fig. 6, there is provided a method of vehicle lamp communication control, comprising:
step 601: receiving projection information from a car lamp communication device and generating a control signal of a micro mirror assembly according to the projection information;
step 602: and adjusting the deflection angle of the micro-mirror assembly according to the control signal of the micro-mirror assembly so as to realize light opening and closing and display the projection information.
Optionally, the car light projection device comprises at least one car light projection module, and each car light projection module comprises a digital micro mirror unit for displaying projection information;
the car light control device comprises at least one control module, wherein the control module comprises a micro control unit and an information interaction unit, and the micro control unit is electrically connected with the digital micro mirror unit;
and the car light communication device is electrically connected with the information interaction unit.
Optionally, the electrical connection between the micro control unit and the digital micromirror unit includes low voltage differential signal connection.
Optionally, the digital micromirror unit includes a plurality of micromirror components with deflection angles and a storage component for storing the projection information, wherein the micromirror components are connected with the storage component through addressing electrodes for controlling deflection of the micromirror components, and the storage component is electrically connected with the micro control unit.
Optionally, the micro control unit transmits the projection information to the storage component through a low voltage differential signal so as to control the deflection angle of each micro mirror component through the addressing electrode.
Optionally, the car light projection module further comprises a projection control unit, and the micro control unit is connected with the projection control unit through an ethernet.
Optionally, the micro control unit transmits the projection information to the control unit through ethernet, so that the control unit controls the digital micromirror unit to display the projection information.
Optionally, the electrical connection between the vehicle lamp communication device and the information interaction unit includes ethernet connection, so as to perform information interaction through an address-based extensible service-oriented middleware communication protocol or a data distribution service communication protocol.
Optionally, the binary signal 0 transmitted by the low voltage differential signal corresponds to the light off state of the micromirror assembly, and the binary signal 1 corresponds to the light on state of the micromirror assembly.
Optionally, the car light communication device comprises a mobile data center module for providing automatic driving service, a car networking system module for providing interaction service between the car and the outside, and a cabin domain controller module for providing operation service, wherein the mobile data center module, the car networking system module and the cabin domain controller module are all connected with the information interaction unit through an ethernet.
In order to enable the vehicle lamp to realize the projection function, a vehicle lamp with the projection function should be provided, and in a vehicle lamp projection device, an exemplary description is made, the vehicle lamp projection device includes at least one vehicle lamp projection module, each vehicle lamp projection module includes a digital micro mirror unit for displaying projection information, for example, the digital micro mirror unit may be a DMD, and the DMD controls rapid opening and closing of light projection through a received low-voltage differential signal 2 so as to display required projection information, thereby further improving response time and high resolution of projection.
The transmission and control of the projection information can be achieved by a lamp control device, and in order to facilitate the satisfaction of a domain centralized electronic electrical architecture, the lamp control device is exemplarily illustrated, the lamp control device comprises at least one control module, the control module comprises a micro control unit and an information interaction unit, the micro control unit is electrically connected with the digital micro mirror unit, the lamp communication device is electrically connected with the information interaction unit, for example, the control module can comprise VDC and VIU in an automobile, the VDC is connected with the digital micro mirror unit of a front lamp through a low-voltage differential signal 2, the MCU of the VIU is connected with the digital micro mirror unit of a rear lamp through a low-voltage differential signal 2, and the switch of the VDC is connected with the VIU and the lamp communication device through an Ethernet 1. The VDC and the VIU are designed by adopting a software architecture of a Classic AUTOSAR, the application service, the combination service and the atomic service of the VDC can provide corresponding services for the car light communication device, the VIU and the digital micro-mirror unit of the front car light, the combination service and the atomic service of the VIU provide corresponding services for the VDC and the digital micro-mirror unit of the rear car light, and the VDC and the VIU call CDD through RTE to control the digital micro-mirror unit and transmit projection data.
The control of the digital micromirror unit is implemented by a control signal, and in one embodiment, as shown in fig. 2, the connection mode of the micro control unit and the digital micromirror unit is exemplarily illustrated to include a low voltage differential signal connection, for example, the low voltage differential signal 2 sends a binary signal sequence, the optical switching of the digital micromirror unit can be controlled by the low voltage differential signal 2, and projection information is displayed by the optical switching duty ratio of the digital micromirror unit.
Illustratively, the digital micromirror unit includes a plurality of micromirror components with deflection angles and a storage component for storing the projection information, wherein the micromirror components are connected with the storage component through addressing electrodes for controlling the deflection of the micromirror components, the storage component is electrically connected with the micro control unit, for example, the digital micromirror unit can be a DMD, the DMD includes a plurality of micromirror components and the storage component, the storage component can be a RAM (Random Access Memory ), when the DMD works, negative bias voltage is applied to the DMD, the micromirror components can control the deflection angles through the addressing electrodes, the deflection angles are limited to +12°, -12° or +10°, -10°, when the RAM receives a binary signal sequence corresponding to the projection information transmitted through low-voltage differential signals, one addressing electrode is connected with +5v, 1 in the corresponding binary signal is grounded, 0 in the corresponding binary signal, the binary signal 1 controls the micromirror components to deflect +12° or +10°, light passes through the projection lens in the direction, thus forming a bright image, the micromirror components can deflect the light through the binary signal, and the micromirror components can rapidly deflect the micro-lens by no deflection angle.
Illustratively, the vehicle lamp projection module further includes a projection control unit, the micro control unit is connected with the projection control unit through an ethernet, for example, the vehicle lamp control module may be a VDC, when the VDC is directly connected with the vehicle lamp projection module of the rear vehicle lamp and controls the projection of the rear vehicle lamp, the VDC adopts a software architecture design of a Classic automotive auto sar, the rear vehicle lamp adopts a DLP vehicle lamp, the projection control unit may be a DLP controller, and the digital micromirror unit may be a DMD. The MCU of VDC is connected with the car light projection module of the front car light through low-voltage differential signal, the control and the transmission projection data of the digital micro mirror unit are realized by calling CDD through RTE, the MCU of VDC is connected with the DLP controller of the DLP car light through Ethernet 1, the DLP controller is abstracted into local equipment in the VDC, the abstracted DLP controller and the DLP car light establish two-way service communication with the socket communication of the DLP controller of the rear car light in a socket communication mode through gigabit Ethernet 1, so the control information of the rear car light can be stored in the abstracted DLP controller, and the communication projection control of the DLP car light is carried out through the abstracted DLP controller.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
Any reference to memory, storage, database, or other medium used in the various embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchi nk) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.
The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (9)
1. A system for communication control of a vehicle lamp, comprising:
the vehicle lamp projection device comprises at least one vehicle lamp projection module, and each vehicle lamp projection module comprises a digital micro-mirror unit for displaying projection information;
the car light control device comprises at least one control module, wherein the control module comprises a micro control unit and an information interaction unit, and the micro control unit is electrically connected with the digital micro mirror unit; wherein the micro control unit is electrically connected with the digital micro mirror unit and comprises a low-voltage differential signal connection;
the car light communication device is electrically connected with the information interaction unit of one control module; the car light communication device is electrically connected with the information interaction unit and comprises an Ethernet connection.
2. The system for communication control of vehicle lamp according to claim 1, wherein the digital micromirror unit comprises a plurality of micromirror assemblies with deflection angles and a storage assembly for storing the projection information, wherein the micromirror assemblies are connected with the storage assembly through addressing electrodes for controlling deflection of the micromirror assemblies, and the storage assembly is electrically connected with the micro control unit.
3. The system for communication control of vehicle lamps of claim 2, wherein said micro control unit transmits said projection information to said memory assembly via a low voltage differential signal to control the deflection angle of each of said micromirror assemblies via said address electrode.
4. The system for vehicle lamp communication control of claim 1, wherein the system for vehicle lamp communication control further comprises:
the car light projection module further comprises a projection control unit, and the micro control unit is connected with the projection control unit through an Ethernet.
5. The system for communication control of a vehicle lamp according to claim 1 or 4, wherein the micro control unit transmits the projection information to the control unit via an ethernet so that the control unit controls the digital micromirror unit to display the projection information.
6. The system for vehicle lamp communication control of claim 1, wherein the vehicle lamp communication device is electrically connected to the information interaction unit of one of the control modules, including an ethernet connection, for information interaction via an address-based extensible service-oriented middleware communication protocol or a data distribution service communication protocol.
7. The system for vehicle lamp communication control according to claim 1 or 2, wherein a binary signal 0 of the low voltage differential signal transmission corresponds to an optical off state of the micromirror assembly, and a binary signal 1 corresponds to an optical on state of the micromirror assembly.
8. The system for communication control of vehicle lights according to claim 1 or 4, wherein the vehicle light communication device comprises a mobile data center module providing an automatic driving service, a car networking system module providing a car-to-outside interaction service, and a cabin domain controller module providing an operation service, wherein the mobile data center module, the car networking system module, and the cabin domain controller module are all connected with the information interaction unit through an ethernet.
9. A method of vehicle lamp communication control, comprising:
receiving projection information from a car lamp communication device and generating a control signal of a micro mirror assembly according to the projection information; the car light communication device is connected with an information interaction unit of one control module in the car light control device through an Ethernet, the car light control device comprises at least one control module, the control module comprises a micro control unit and the information interaction unit, the micro control unit is connected with a digital micro mirror unit of the car light projection device through a low-voltage differential signal, the car light projection device comprises at least one car light projection module, and each car light projection module comprises the digital micro mirror unit for displaying projection information;
and adjusting the deflection angle of the micro-mirror assembly according to the control signal of the micro-mirror assembly so as to realize light opening and closing and display the projection information.
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| CN202210425248.7A CN114750680B (en) | 2022-04-21 | 2022-04-21 | System and method for controlling communication of car lamp |
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