WO2022036828A1 - 汽车中控系统及其仪表盘显示系统 - Google Patents

汽车中控系统及其仪表盘显示系统 Download PDF

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Publication number
WO2022036828A1
WO2022036828A1 PCT/CN2020/121105 CN2020121105W WO2022036828A1 WO 2022036828 A1 WO2022036828 A1 WO 2022036828A1 CN 2020121105 W CN2020121105 W CN 2020121105W WO 2022036828 A1 WO2022036828 A1 WO 2022036828A1
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WIPO (PCT)
Prior art keywords
control board
data
signal
layer
display screen
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Application number
PCT/CN2020/121105
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English (en)
French (fr)
Inventor
王文博
张树申
祁天存
宋宽
Original Assignee
黑龙江天有为电子有限责任公司
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Publication of WO2022036828A1 publication Critical patent/WO2022036828A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/50—Instruments characterised by their means of attachment to or integration in the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/10—Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
    • B60K35/22—Display screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/40—Hardware adaptations for dashboards or instruments
    • B60K2360/46—Electrical connections

Definitions

  • the present application relates to the technical field of automotive electronics, in particular to an automotive central control system and an instrument panel display system thereof.
  • the dashboard of a car is a device that reflects the working conditions of various systems of the vehicle.
  • the dashboard display system can display, for example, a speedometer, a tachometer, and various status indicators.
  • an automobile instrument panel display system includes a display screen and a control board, wherein the control board drives the display screen and sends display data to the display screen, and the display screen presents the display data visually.
  • the control board needs to read the relevant data of the car body.
  • the product form of the control board is obviously different, which leads to the poor universality of the control board between different cars.
  • the product form of the instrument panel is different, which will also lead to different product forms of the control panel, which limits the versatility of the control panel.
  • control board when a certain module or device on the control board is damaged, the control board needs to be replaced as a whole, which leads to high maintenance costs for the display system of the vehicle instrument panel.
  • control base plate also needs to be continuously upgraded, and if the overall control base plate is replaced, the upgrade cost will be too high; on the other hand, the controller space of the instrument panel display system is limited, and it is difficult to add additional Add hardware configuration.
  • the main purpose of the present application is to provide an automobile instrument panel display system, so as to improve the component versatility of the automobile instrument panel display system, realize the miniaturization of the whole controller, and reduce the maintenance cost.
  • an embodiment of the present application discloses an automotive instrument panel display system, including: a display screen, which includes a standard drive interface and a standard data interface, and the display screen receives a drive signal through the standard drive interface to display that the standard data interface receives a drive signal.
  • the display data of the display screen; the driving board of the display screen includes: a first control board and a second control board, the first control board is adapted to the body connector, and the functional circuit on the second control board is a standardized device; the first control board passes the command The interface provides the driving signal to the display screen; the first control board parses the body data provided by the body connector, and generates the driving signal and the data indication signal to be displayed; the second control board stores the data set to be displayed, and the data in the data set passes through the data The instruction signal is indexed and extracted; the second control board is connected with the standard data interface through the data interface; wherein, the first control board and the second control board are electrically connected through the terminal; the second control board is located above the first control board, and the first control board is The projection of the second control board on the horizontal plane is within the projection of the first control board on the horizontal plane; wherein, the terminal on the side of the second control board includes: a first pin group and a second pin group, and the pin in the first pin group The pins
  • the sides are arranged in sequence; the second control board is stacked and plugged on the first control board through the first pin group and the second pin group; the first control board responds to the trigger signal, provides a driving signal to the display screen, and sends a driving signal to the first control board.
  • the second control board provides a data indication signal; the second control board extracts the data to be displayed in response to the data indication signal and sends it to the display screen, so that the display screen displays the received display data, wherein the data to be displayed corresponds to the data indication signal.
  • the functional circuit on the second control board is connected to the terminal located on the side of the second control board through a standard circuit.
  • the number of pins in the first pin group is greater than the number of pins in the second pin group.
  • the vehicle instrument panel display system further includes: an insulating sheet located between the first control board and the second control board.
  • the second control board includes a multi-layered laminated PCB; wherein: the top layer and the bottom layer of the laminated PCB are a first signal layer, and the first signal layer is used to arrange functional circuits on the second control board; and, the laminated PCB
  • the sub-top layer and the sub-bottom layer are ground layers, so that the top layer and the sub-top layer form an electrical signal return flow, and the bottom layer and the sub-bottom layer form an electrical signal return flow.
  • the laminated PCB further includes: two second signal layers, respectively located between the sub-top layer and the power layer, and between the sub-bottom layer and the power layer; the two second signal layers supplement the two first signal layers Trace; power plane, located on the innermost layer of the stack-up PCB to provide a power reference plane for the second signal layer.
  • straight-down through-hole vias are provided on the laminated PCB, and each layer of PCB is signal-connected through through-hole vias.
  • the second control board is rectangular; the standardized devices of the second control board include: CPU, DDR and electrical sensitive devices; It is arranged obliquely on either side of the second control board; the DDR is arranged in the area near the left side of the second control board, and the DDR is located on both sides of the CPU diagonal; the electrical sensitive device is located on the right side of the second control board Corner area, the sides of the corner area are further away from the CPU than the respective opposite sides.
  • an automobile central control system including:
  • the human-computer interaction module is used to receive the user's key operation; and the vehicle instrument panel display system disclosed in the first aspect above performs data interaction with the human-computer interaction module through the body connector.
  • the driving board of the display screen includes two control boards, and the first control board is adapted to the body connector, so that the first control board can be adapted to
  • the body connector reads and parses the body data
  • the functional circuit on the second control board is a standardized device, that is, the second control board is a standardized and platform-based control board; wherein, the first control board is displayed to the display through the command interface
  • the screen provides driving signals
  • the second control board is connected to the standard data interface through the data interface, that is, the first control board and the second control board respectively provide driving signals and display data to the display screen through the standardized interface;
  • the board and the second control board are electrically connected through two rows of pin groups.
  • the first control board can be used to adapt to the data interaction of different models, that is, different first control boards can be customized for different models.
  • the second control board is a standardized, platform-based control board, which can be connected to different first control boards and display screens through standardized interfaces, that is, the second control board has universality; When the device on the second control board fails, only the first control board or the second control board needs to be replaced, which reduces the maintenance cost.
  • the projection of the second control board on the horizontal plane is within the projection of the first control board on the horizontal plane, which can save the area occupied by the two control boards, which is conducive to realizing the miniaturization of the controller.
  • the connection method can not only save the PCB surface area, but also increase the connection strength.
  • the vehicle body data is acquired through the first control board, driving signals and data indication signals are generated, that is, the unified scheduling and control data display are realized through the first control board, so as to provide the centralized control and avoid the Display data errors or freezes caused by inconsistent timing.
  • FIG. 1 is a schematic diagram of the structural principle of an automobile instrument panel display system disclosed in this embodiment
  • FIG. 2 is a schematic structural diagram of a wiring plane of a second control board disclosed in this embodiment
  • FIG. 3A and 3B are schematic diagrams of a state after a second control board is stacked and inserted on the first control board disclosed in the present embodiment, wherein FIG. 3A is a schematic side view of the structure, and FIG. 3B is a top view of the structure;
  • FIG. 4 is a schematic diagram of PCB distribution of a second control board disclosed in this embodiment.
  • orientation words such as “front” and “rear” mentioned in this application refer to the orientation of the display screen when it faces the display screen in a normal working state.
  • FIG. A schematic diagram of the structure and principle of an automobile instrument panel display system the automobile instrument panel display system includes: a display screen 100, which includes a standard drive interface 101 and a standard data interface 102, and the display screen 100 receives a drive signal through the standard drive interface 101 to display standard data. Display data received by the interface 102 .
  • the so-called standard driver interface 101 and standard data interface 102 refer to interfaces conforming to display standard protocols in the field of display screens.
  • the standard driving interface 101 includes a power interface, a VGH/VGL interface, a backlight interface, etc.
  • the display standard data interface 102 may be, for example, an LVDS0 interface, an LVDS1 interface, and the like.
  • the display screen 100 is not specifically limited, as long as data display can be realized.
  • the driving board of the display screen 100 includes two control boards. Specifically, please refer to FIG. 1 .
  • the driving board includes: a first control board 1 and a second control board 2 , wherein the first control board 1 is connected to the vehicle body.
  • the connector 3 is adapted.
  • the first control board 1 can be connected to the vehicle body connector 3 through a CAN communication module.
  • a switch signal interface and an analog signal interface can also be added as required.
  • the functional circuits on the second control board 2 are standardized devices. In this embodiment, the standardized devices include, for example, DC/DC modules, Flash memory modules, DDR, eMMC, etc.
  • the second control board 2 may also include appropriate peripheral circuits, such as capacitors, resistors, and the like.
  • the first control board 1 provides driving signals to the display screen 100 through the command interface 11.
  • the driving signal may include DC power supply, bias power supply signal VGH/VGL, etc.
  • the DC power supply and bias power supply signal VGH/VGL may be shared with other modules respectively, that is, each module may be composed of The same DCDC module and bias power supply module are used to provide corresponding electrical signals.
  • the first control panel 1 parses the vehicle body data provided by the vehicle body connector 3 to generate a driving signal and a data indication signal to be displayed.
  • the data indication signal includes sequence information of data transmission time.
  • the vehicle body data can be data such as rotational speed, vehicle speed, temperature, oil level, etc.; since the display screen 100 is jointly driven and displayed by the first control panel 1 and the second control panel 2, the first control panel 1 is generating the driving signal Then, the sequence information of the data transmission time should be sent to the second control board 2 so that the second control board 2 transmits the data to be displayed to the display screen 100 according to the sequence information provided by the first control board 1 .
  • the first control board 1 includes: a single chip microcomputer (MCU) and a crystal oscillator module, and each functional module is controlled by the MCU, for example, the bias power supply module (VGH/VGL) and the LDO power supply module are connected to the MCU through a GPIO port , the MCU controls the bias power supply module (VGH/VGL) and the LDO power supply module through the GPIO port; the MCU controls the DC/DC constant current module through the PWM signal; the Flash module reads and writes data through the SPI and the MCU, and the EEPROM communicates with the MCU through the IIC. data interaction.
  • MCU single chip microcomputer
  • the LDO power supply module are connected to the MCU through a GPIO port
  • the MCU controls the bias power supply module (VGH/VGL) and the LDO power supply module through the GPIO port
  • the MCU controls the DC/DC constant current module through the PWM signal
  • the Flash module reads and writes data through the SPI and the MCU
  • the second control board 2 stores a data set to be displayed.
  • the data in the data set is indexed and extracted through a data indication signal.
  • the second control board 2 is connected to the standard data interface 102 through the data interface 22 .
  • the first control board 1 and the second control board 2 are electrically connected through the terminal 21 .
  • the first control board 1 and the second control board 2 can be Data exchange is via eg UART.
  • the second control board 2 may include a microprocessor, for example, a CPU with image data processing functions, and the MCU of the first control board 1 is connected to the CPU of the second control board 2 through UART, thereby realizing the first Data interaction between the control board 1 and the second control board 2.
  • a microprocessor for example, a CPU with image data processing functions
  • FIG. 3B are schematic diagrams of a state after a second control board is stacked and plugged into the first control board disclosed in this embodiment, wherein FIG. 3A is a schematic side view of the structure, FIG. 3B is a schematic plan view of the structure, wherein the second control board 2 is located above the first control board 1 , and the second control board 2 is projected on the horizontal plane within the horizontal projection of the first control board 1 , wherein the second control board 2 is located on the horizontal plane.
  • the terminal 21 on the board 2 side includes: a first pin group 21a and a second pin group 21b, as shown in the circle in FIG.
  • the pins in the first pin group 21a are lined up in a line, and the second pin group
  • the pins in the group 21b are arranged in a line, so that the area occupied by the terminals on the PCB can be reduced
  • the second control board 2 has two oppositely arranged sides, the first pin group 21a and the second pin group 21a.
  • 21b are arranged in sequence along two opposite sides respectively;
  • the second control board 2 is stacked and plugged on the first control board 1 through the first pin group 21a and the second pin group 21b.
  • each pin in the first pin group 21 a and the second pin group 21 b is inserted into each connection hole in the first control board 1 , so that the connection between the first control board 1 and the second control board 2 is realized. electrical connection.
  • the first pin group 21a and the second pin group 21b are respectively located on two sides of the CPU, so that the first pin group 21a and the second pin group 21b are connected to the first pin group 21a and the second pin group 21b.
  • the connection strength between the first control board 1 and the second control board 2 is improved.
  • the number of pins in the first pin group 21a is more than the number of pins in the second pin group 21b
  • the excess number is preferably an odd number, for example, the number of pins in the first pin group 21a is, for example, 40 pins, and the number of pins in the second pin group 21b is, for example, 39 pins.
  • the specific pin numbers of the first pin group 21a and the second pin group 21b can be determined according to the number of transmission signals.
  • the pins can be welded to the first control board and the second control board respectively. Therefore, the connection strength between the pins and the first control board and the second control board can be improved.
  • the first control board 1 and the second control board 2 are electrically connected through two rows of pins, so that the second control board 2 can be adapted to different types of the first control board 1, thereby improving the second control board 1.
  • the versatility of the control board enables the second control board to be standardized and platformized.
  • the first control board 1 provides a driving signal to the display screen 100 in response to the trigger signal, and provides a data indication signal to the second control board 2; the second control board 2 extracts the data to be displayed in response to the data indication signal, And send it to the display screen 100, so that the display screen 100 displays the received display data, wherein the data to be displayed corresponds to the data indication signal.
  • the so-called trigger signal may be automatically provided by the body connector 3.
  • the body connector 3 provides live information such as rotational speed and vehicle speed, the live information can be considered as the trigger signal; it may also be manually provided by the user. Trigger generated control signal.
  • the first control board 1 Since the data to be displayed is stored in the second control board 2, the first control board 1 only needs to send a data indication signal to the second control board 2, and the second control board 2 extracts the corresponding data to be displayed according to the index of the data indication signal. Yes, that is, it is not necessary for the first control board 1 to send the data to be displayed to the second control board 2 . Since the data indication signal contains time series information, the second control board 2 can send the data to be displayed to the display screen 100 when the transmission time arrives according to the time series information, and the display screen 100 is displayed under the driving of the driving signal. Data to be displayed.
  • the second control board 2 includes: a CPU and a crystal oscillator module, and each functional module is controlled by the CPU.
  • the second control board 2 further includes: a storage module, such as a Flash module, a DDR3 memory module, an eMMC module, etc.; the second control board 2 further includes: a DC/DC power module, such as a 12V-0.9V DC /DC module, each DC/DC module on the second control board 2 can be powered by the first control board 1 .
  • the second control board 2 may further include a connector interface, such as a USB connector interface, a Fakra interface, and the like.
  • a connector interface such as a USB connector interface, a Fakra interface, and the like.
  • FIG. 2 is a schematic diagram of a wiring plane structure of a second control board disclosed in this embodiment.
  • the functional circuit on the upper part is connected to the terminal 21 of the standard interface on the side of the second control board 2 through a standard line.
  • the standard line can be, for example, a line connected to a serial port.
  • each functional circuit can be connected to the terminal 21 through the CPU, or can be connected to the terminal 21 independently.
  • the vehicle instrument panel display system further includes: an insulating sheet 4 , and the insulating sheet 4 is located between the first control board 1 and the second control board 2 .
  • the insulating sheet 4 may be a component with an insulating function, such as a Mylar sheet. The devices in the overlapping area of the control board 2 and the first control board 1 interfere with each other.
  • the second control board 2 includes a multi-layered laminated PCB, wherein: the top layer of the laminated PCB and the The bottom layer is the first signal layer, the first signal layer is used for arranging the functional circuits on the second control board 2, and the sub-top layer and the sub-bottom layer of the laminated PCB are ground layers, so that the top layer and the sub-top layer form electrical signal return, and the bottom layer is the ground layer. and the sub-bottom layer to form an electrical signal return flow.
  • the top layer and the bottom layer of the laminated PCB are set as the first signal layer, which improves the signal quality
  • the adjacent sub-top layer and the sub-bottom layer are the ground layers, so that the first signal layer can be connected to the adjacent PCB layer.
  • ground layer forms a return flow, a return flow path section, and the signal quality is good, thereby improving the anti-interference ability of the first signal layer and improving the EMC performance of the vehicle.
  • the laminated PCB further includes: a power supply layer and two layers of second signal layers, wherein: the power supply layer is located at the innermost layer of the laminated PCB to provide a power reference plane for the second signal layer; the two layers of second signal layers The layers are located between the sub-top layer and the power layer, and between the sub-bottom layer and the power layer, respectively, and the two second signal layers provide supplementary traces for the two first signal layers.
  • the power supply layer may be one layer or two layers, and when the power supply layer is two layers, the two power supply layers may be arranged next to each other.
  • Some key lines in the first signal layer can be routed through the second signal layer, such as USB, LVDS, MIPI, etc. For the lines with strong external emission and the lines with high anti-interference requirements, they can be routed through the second signal layer. The signal layer is routed, thereby improving the overall EMC performance.
  • the power layer is located at the innermost layer of the stacked PCB, so that the same reference plane can be provided for the second signal layer.
  • arranging the wiring layer inside the laminated PCB can separate the signal wiring, thereby improving the signal interference capability, reducing the external radiation of the signal, and improving the stability of the signal.
  • the laminated PCB is provided with through-hole vias 23 that are straight down, and each layer of PCBs is signal-connected through the through-hole vias 23 .
  • the through holes 23 are arranged directly downward.
  • the signal return path can be shortened, and the anti-interference capability can be improved; on the other hand, the external emission of interference signals can be reduced, and the driving safety can be improved.
  • the second control board 2 is rectangular; the standardized components of the second control board 2 include: CPU, DDR 24 and electrical sensitive devices 25, wherein the CPU is located on the second control board 2 The center is close to the area on the left side, and either side of the CPU is inclined with respect to either side of the second control board 2 .
  • the CPU is not arranged horizontally and vertically with respect to the second control board 2 , the CPU has a certain inclination angle with respect to either side of the second control board 2 , and the CPU is located on the left side of the second control board 2 . Therefore, the lower right corner area of the second control board 2 has a larger placement area.
  • the DDR 24 is disposed on the second control board 2 near the left side, and the DDR 24 is located on both sides of the CPU diagonal.
  • the DDR 24 is located on both sides of the CPU by the inclined setting of the CPU, so that the wiring of the DDR 24 is the shortest, and the DDR 24 is arranged in the area close to the left side of the second control board 2, so as to effectively The space on the left side of the second control board 2 is utilized, so that the structure of the DDR 24 and the CPU is compact, and the area of the PCB is saved.
  • the electrical sensors 25 are located in the right corner area of the second control board 2 , and the sides of the corner area are farther away from the CPU than the opposite sides.
  • the electrical sensor 25 may be, for example, a high-speed switch, flash, or the like.
  • some components are arranged parallel to the side of the CPU, and some components are arranged parallel to the side of the second control board 2, so that the corner area can be fully utilized to arrange more electrical Sensitive device 25 .
  • the side of the right corner area is farther away from the CPU, more electrical components can be arranged in the corner area, thereby saving the area of the PCB; and either side of the CPU is relatively
  • the DDR 24 and the electrical sensor 25 are disposed on either side of the second control board 2 obliquely, and the DDR 24 and the electrical sensor 25 are located on both sides of the CPU, so that the heating elements are dispersed as a whole and the heat dissipation effect is improved.
  • This embodiment also discloses an automobile central control system, including:
  • the human-computer interaction module is used for receiving the user's key operation, and the vehicle instrument panel display system disclosed in the above embodiments, wherein the vehicle instrument panel display system performs data interaction with the human-computer interaction module through the body connector.
  • the driving board of the display screen includes two control boards, and the first control board is adapted to the body connector, so that the first control board can be adapted to
  • the body connector reads and parses the body data
  • the functional circuit on the second control board is a standardized device, that is, the second control board is a standardized and platform-based control board; wherein, the first control board is displayed to the display through the command interface
  • the screen provides driving signals
  • the second control board is connected to the standard data interface through the data interface, that is, the first control board and the second control board respectively provide driving signals and display data to the display screen through the standardized interface;
  • the board and the second control board are electrically connected through two rows of pin groups.
  • the first control board can be used to adapt to the data interaction of different models, that is, different first control boards can be customized for different models.
  • the second control board is a standardized, platform-based control board, which can be connected to different first control boards and display screens through standardized interfaces, that is, the second control board has universality; When the device on the second control board fails, only the first control board or the second control board needs to be replaced, which reduces the maintenance cost.
  • the projection of the second control board on the horizontal plane is within the projection of the first control board on the horizontal plane, which can save the area occupied by the two control boards, which is conducive to realizing the miniaturization of the controller.
  • the new connection method not only saves the PCB surface area, but also improves the connection strength.
  • the vehicle body data is acquired through the first control board, driving signals and data indication signals are generated, that is, the unified scheduling and control data display are realized through the first control board, so as to provide the centralized control and avoid the Display data errors or freezes caused by inconsistent timing.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
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Abstract

本申请公开了一种汽车中控系统及其仪表盘显示系统，其中，仪表盘显示系统包括：显示屏，其包括标准驱动接口和标准数据接口；显示屏的驱动板包括：第一控制板与车身连接器适配，第二控制板上的功能电路为标准化器件；第一控制板和第二控制板通过接线端电连接；第一控制板响应于触发信号，向显示屏提供驱动信号，并向第二控制板提供数据指示信号；第二控制板响应于数据指示信号提取与数据指示信号对应的待显示数据，并发送给显示屏。从而，一方面，可以通过第一控制板来适应不同车型的数据交互；另一方面，第二控制板具有通用性。在第一控制板或第二控制板上的器件出现故障时，只需更换第一控制板或第二控制板即可，减小了维修成本。

Description

汽车中控系统及其仪表盘显示系统 技术领域
本申请涉及汽车电子技术领域，具体涉及一种汽车中控系统及其仪表盘显示系统。
背景技术
随着汽车的普及，汽车的保有量越来越大。汽车仪表盘是反映车辆各系统工作状况的装置，通过仪表盘显示系统可以显示例如车速表、转速表，以及各种状态指示灯等等。一般而言，汽车仪表盘显示系统都包含显示屏和控制底板，其中，控制底板驱动显示屏，并向显示屏发送显示数据，显示屏可视化呈现显示数据。
控制底板需要读取汽车本体的相关数据，对于不同的汽车厂商，或者同一厂商不同型号的汽车，控制底板的产品形态显然不尽相同，由此导致控制底板在不同的汽车之间的通用性差。另外，不同的汽车之间，仪表盘的产品形态不同，这也会导致控制底板的产品形态不同，限制了控制底板的通用性。
此外，当控制底板上的某个模块或器件损坏了后，要整体更换控制底板，由此导致了汽车仪表盘显示系统的维修成本高。并且，随着汽车仪表的丰富，一方面，控制底板也需要不断升级，而如果整体更换控制底板，也会导致升级成本过高；另一方面，仪表盘显示系统的控制器空间有限，难以额外增加硬件配置。
因此，如何改善汽车仪表盘显示系统的部件通用性，实现控制器的整机小型化，降低维修、升级成本成为亟待解决的术问题。
发明内容
基于上述现状，本申请的主要目的在于提供一种汽车仪表盘显示系统，以改善汽车仪表盘显示系统的部件通用性，实现控制器的整机小型 化，降低维修成本。
为实现上述目的，本申请采用的技术方案如下：
第一方面，本申请实施例公开了一种汽车仪表盘显示系统，包括：显示屏，其包括标准驱动接口和标准数据接口，显示屏通过标准驱动接口接收驱动信号，以显示标准数据接口接收到的显示数据；显示屏的驱动板包括：第一控制板和第二控制板，第一控制板与车身连接器适配，第二控制板上的功能电路为标准化器件；第一控制板通过命令接口向显示屏提供驱动信号；第一控制板解析车身连接器提供的车身数据，生成驱动信号和待显示的数据指示信号；第二控制板存储有待显示的数据集合，数据集合中的数据通过数据指示信号进行索引提取；第二控制板通过数据接口与标准数据接口连接；其中，第一控制板和第二控制板通过接线端电连接；第二控制板位于第一控制板的上方，且第二控制板在水平面投影处于第一控制板在水平面投影之内；其中，位于第二控制板侧的接线端包括：第一插针组和第二插针组，第一插针组中的插针一字排开，第二插针组中的插针一字排开；第二控制板具有两相对设置的侧边，第一插针组和第二插针组分别沿着两相对设置的侧边依次布置；第二控制板通过第一插针组、第二插针组堆叠插接在第一控制板上；第一控制板响应于触发信号，向显示屏提供驱动信号，并向第二控制板提供数据指示信号；第二控制板响应于数据指示信号提取待显示数据，并发送给显示屏，以使显示屏显示接收到的显示数据，其中，待显示数据与数据指示信号对应。
可选地，第二控制板上的功能电路通过标准线路连接至位于第二控制板侧的接线端。
可选地，第一插针组中的插针数目多于第二插针组中的插针数目。
可选地，第二控制板上与第一控制板重叠的区域布置有电学器件；汽车仪表盘显示系统还包括：绝缘片，位于第一控制板和第二控制板之间。
可选地，第二控制板包括多层层叠的层叠PCB；其中：层叠PCB的顶层和底层为第一信号层，第一信号层用于布置第二控制板上的功能电路；且，层叠PCB的次顶层和次底层为接地层，以使顶层和次顶层形 成电信号回流，底层和次底层形成电信号回流。
可选地，层叠PCB还包括：两层第二信号层，分别位于次顶层和电源层之间，以及次底层和电源层之间；两层第二信号层为两层第一信号层提供补充走线；电源层，位于层叠PCB的最内层，以为第二信号层提供电源参考平面。
可选地，层叠PCB上设有直下的通孔过孔，各层PCB通过通孔过孔信号连接。
可选地，第二控制板为矩形；第二控制板的标准化器件包括：CPU、DDR和电学灵敏器件；CPU位于第二控制板中心靠近左侧边的区域，且CPU的任一侧边相对于第二控制板的任一侧边倾斜设置；DDR设置在第二控制板上靠近左侧边的区域，且DDR位于CPU对角线的两侧；电学灵敏器件位于第二控制板上右侧边角区域，边角区域的侧边相对于各自相对的一边更远离CPU。
第二方面，本申请实施例公开了一种汽车中控系统，包括：
人机交互模块，用于接收用户的按键操作；及上述第一方面公开的汽车仪表盘显示系统，通过车身连接器与人机交互模块进行数据交互。
依据本申请实施例公开的一种汽车中控系统及其仪表盘显示系统，显示屏的驱动板包括两块控制板，第一控制板与车身连接器适配，使得第一控制板能够适应于车身连接器，读取并解析车身数据，第二控制板上的功能电路为标准化器件，也就是，第二控制板为标准化、平台化的控制板；其中，第一控制板通过命令接口向显示屏提供驱动信号，第二控制板通过数据接口与标准数据接口连接，也就是，第一控制板和第二控制板分别通过标准化接口向显示屏分别提供驱动信号和显示数据；而，第一控制板和第二控制板通过两排插针组电连接，从而，第一方面，可以通过第一控制板来适应不同车型的数据交互，也就是能够为不同的车型定制不同的第一控制板。第二方面，第二控制板是标准化、平台化的控制板，能够通过标准化接口连接至不同的第一控制板、显示屏，即，第二控制板具有通用性；在第一控制板或第二控制板上的器件出现故障时，只需更换第一控制板或第二控制板即可，减小了维修成本。第三方面，第二控制板在水平面投影处于第一控制板在水平面投影之内，可以 节省两块控制板所占的面积，利于实现控制器的整机小型化，并且，通过两排插针的连接方式不仅可以节省PCB表面积，还能够增加连接强度。
此外，通过第一控制板来获取车身数据，生成驱动信号，以及数据指示信号，也就是，实现了通过第一控制板来统一调度、控制数据显示，从而能够提供控制的集中性，避免了因时序不统一而导致的显示数据出错或卡顿的现象。
本申请的其他有益效果，将在具体实施方式中通过具体技术特征和技术方案的介绍来阐述，本领域技术人员通过这些技术特征和技术方案的介绍，应能理解所述技术特征和技术方案带来的有益技术效果。
附图说明
通过以下参照附图对本申请实施例的描述，本申请的上述以及其它目的、特征和优点将更为清楚，在附图中：
图1为本实施例公开的一种汽车仪表盘显示系统结构原理示意图；
图2为本实施例公开的一种第二控制板接线平面结构示意图；
图3A图3B为本实施例公开的一种第二控制板堆叠插接在第一控制板上后的状态示意图，其中，图3A为侧视结构示意图，图3B为俯视结构示意图；
图4为本实施例公开的一种第二控制板的PCB分布示意图。
具体实施方式
以下基于实施例对本申请进行描述，但是本申请并不仅仅限于这些实施例。在下文对本申请的细节描述中，详尽描述了一些特定的细节部分，为了避免混淆本申请的实质，公知的方法、过程、流程、元件并没有详细叙述。
此外，本领域普通技术人员应当理解，在此提供的附图都是为了说明的目的，并且附图不一定是按比例绘制的。
除非上下文明确要求，否则整个说明书和权利要求书中的“包括”、“包含”等类似词语应当解释为包含的含义而不是排他或穷举的含义；也就是说，是“包括但不限于”的含义。
在本申请的描述中，需要理解的是，术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性。此外，在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。
可以理解的是，本申请中所述的“前”、“后”等方位词指的是显示屏在正常工作状态下，面对显示屏时的方位。
为了改善汽车仪表盘显示系统的部件通用性，实现控制器的整机小型化，降低维修成本，本实施例公开了一种汽车仪表盘显示系统，请参考图1，为本实施例公开的一种汽车仪表盘显示系统结构原理示意图，该汽车仪表盘显示系统包括：显示屏100，其包括标准驱动接口101和标准数据接口102，显示屏100通过标准驱动接口101接收驱动信号，以显示标准数据接口102接收到的显示数据。本实施例中，所称标准驱动接口101和标准数据接口102是指在显示屏领域符合显示标准协议的接口。在具体实施过程中，以液晶显示屏为例，标准驱动接口101包括电源接口、VGH/VGL接口、背光接口等，显示标准数据接口102可以是例如LVDS0、LVDS1接口等。
需要说明的是，本实施例中，并不对显示屏100做具体的限定，只要能够实现数据显示即可。
本实施例中，显示屏100的驱动板包括两块控制板，具体地，请参考图1，驱动板包括：第一控制板1和第二控制板2，其中，第一控制板1与车身连接器3适配，具体地，第一控制板1可以通过CAN通信模块与车身连接器3连接，当然，还可以根据需要增设开关信号接口、模拟信号接口。第二控制板2上的功能电路为标准化器件，本实施例中，所称标准化器件包括例如DC/DC模块、Flash存储模块、DDR、eMMC等，这些标准化器件使得第二控制板2实现了平台化和标准化，也就是，使得第二控制板2更具有通用性。需要说明的是，在具体实施过程中，第二控制板2也可以包含适当的外围电路，例如电容、电阻等。
在具体实施例中，第一控制板1通过命令接口11向显示屏100提 供驱动信号。如上文描述，驱动信号可以包含直流电源、偏置电源信号VGH/VGL等，在具体实施过程中，直流电源、偏压电源信号VGH/VGL可以分别与其它模块共用，也就是，各个模块可以由同一个DCDC模块、偏压电源模块来提供相应的电信号。
本实施例中，第一控制板1解析车身连接器3提供的车身数据，生成驱动信号和待显示的数据指示信号，本实施例中，数据指示信号包含数据传输时间的序列信息。具体地，车身数据可以是例如转速、车速、温度、油位等数据；由于显示屏100通过第一控制板1和第二控制板2共同驱动显示，因此，第一控制板1在生成驱动信号后，应当将数据传输时间的序列信息发送给第二控制板2，以便于第二控制板2按照第一控制板1提供的序列信息向显示屏100传输待显示的数据。
在具体实施过程中，第一控制板1包括：单片机(MCU)及晶振模块，各个功能模块由MCU进行控制，例如，偏压电源模块(VGH/VGL)、LDO电源模块通过GPIO口连接至MCU，由MCU通过GPIO口控制偏压电源模块(VGH/VGL)、LDO电源模块；MCU通过PWM信号控制DC/DC恒流模块；Flash模块通过SPI与MCU进行数据读写操作，EEPROM通过IIC与MCU进行数据交互。
请参考图1，第二控制板2存储有待显示的数据集合，本实施例中，数据集合中的数据通过数据指示信号进行索引提取。在具体实施例中，第二控制板2通过数据接口22与标准数据接口102连接。
在具体实施例中，请参考图1、图2和图3A，第一控制板1和第二控制板2通过接线端21电连接，具体地，第一控制板1和第二控制板2可以通过例如UART进行数据交互。具体地，第二控制板2上可以包括微处理器，例如，具有图像数据处理功能的CPU，第一控制板1的MCU通过UART与第二控制板2的CPU连接，由此实现了第一控制板1和第二控制板2之间的数据交互。在具体实施例中，请参考图3A和图3B，为本实施例公开的一种第二控制板堆叠插接在第一控制板上后的状态示意图，其中，图3A为侧视结构示意图，图3B为俯视结构示意图，其中，第二控制板2位于第一控制板1的上方，且第二控制板2在水平面投影处于第一控制板1在水平面投影之内，其中，位于第二控制板2侧的接 线端21包括：第一插针组21a和第二插针组21b，如图2中圆圈所示，第一插针组21a中的插针一字排开，第二插针组21b中的插针一字排开，从而可以减小接线端在PCB上所占用的面积；第二控制板2具有两相对设置的侧边，第一插针组21a和第二插针组21b分别沿着两相对设置的侧边依次布置；第二控制板2通过第一插针组21a、第二插针组21b堆叠插接在第一控制板1上。具体地，第一插针组21a、第二插针组21b中的各个插针分别插入第一控制板1中的各个连接孔，从而实现了第一控制板1和第二控制板2之间的电连接。
在可选的实施例中，第一插针组21a和第二插针组21b分别位于CPU的两侧，从而，使得在通过第一插针组21a和第二插针组21b连接至第一控制板1时，提高第一控制板1和第二控制板2之间的连接强度。
为了避免第一控制板1和第二控制板2之间插接错误，在可选的实施例中，第一插针组21a中的插针数目多于第二插针组21b中的插针数目，多出的数目优选为奇数，例如，第一插针组21a中的插针数目为例如40pin，第二插针组21b中的插针数目为例如39pin。具体地，第一插针组21a和第二插针组21b的具体插针数目可以依据传输信号的多少来确定。
在汽车颠簸过程中，为了防止插针从第一控制板、第二控制板松脱，甚至可能带来安全隐患，在可选的实施例中，插针可以分别焊接在第一控制板、第二控制板上，由此，可以提高插针与第一控制板、第二控制板的连接强度。
本实施例中，通过第一控制板1和第二控制板2通过两排插针电连接，使得第二控制板2能够适配于不同型号的第一控制板1，从而，改善了第二控制板的通用性，使得第二控制板能够标准化、平台化。
本实施例中，第一控制板1响应于触发信号，向显示屏100提供驱动信号，并向第二控制板2提供数据指示信号；第二控制板2响应于数据指示信号提取待显示数据，并发送给显示屏100，以使显示屏100显示接收到的显示数据，其中，待显示数据与数据指示信号对应。本实施例中，所称触发信号可以是车身连接器3自动提供的，例如在车身连接器3提供转速、车速等实况信息时，即可认为该实况信息即为触发信号； 也可以是用户手动触发产生的控制信号。由于待显示数据存储于第二控制板2，因此，第一控制板1只需向第二控制板2发送数据指示信号，由第二控制板2根据数据指示信号索引提取对应的待显示数据即可，也就是，无需第一控制板1向第二控制板2发送待显示数据。由于数据指示信号包含了时间序列信息，因此，第二控制板2可以根据时间序列信息，在传输时间到来时将待显示数据发送给显示屏100即可，显示屏100在驱动信号的驱动下显示待显示的数据。
在具体实施过程中，第二控制板2包括：CPU及晶振模块，各个功能模块由CPU进行控制。在具体实施例中，第二控制板2还包括：存储模块，例如Flash模块、DDR3内存模块、eMMC模块等；第二控制板2还包括：DC/DC电源模块，例如12V-0.9V的DC/DC模块，第二控制板2上的各个DC/DC模块可以由第一控制板1来提供电源。
为了丰富第二控制板2的平台化功能，在可选的实施例中，第二控制板2还可以包括连接器接口，例如USB连接器接口、Fakra接口等。
为了便于实现第二控制板2的标准化、平台化接线，在可选的实施例中，请参考图2，为本实施例公开的一种第二控制板接线平面结构示意图，第二控制板2上的功能电路通过标准线路连接至标准接口位于第二控制板2侧的接线端21。在具体实施例中，标准线路可以是例如连接串口的线路，具体地，各功能电路可以通过CPU连接至接线端21，也可以单独连线至接线端21。
为了尽可能多地布置元器件，在可选的实施例中，第二控制板2上与第一控制板1重叠的区域布置有电学器件。请参考图3A，汽车仪表盘显示系统还包括：绝缘片4，绝缘片4位于第一控制板1和第二控制板2之间。在具体实施例中，绝缘片4可以是例如麦拉片等具有绝缘功能的部件，本实施例中，通过绝缘片4可以隔离第一控制板1和第二控制板2，从而，避免第二控制板2、第一控制板1重叠区域的器件相互干扰。
请参考图4，为本实施例公开的一种第二控制板的PCB分布示意图，在可选的实施例中，第二控制板2包括多层层叠的层叠PCB，其中：层叠PCB的顶层和底层为第一信号层，第一信号层用于布置第二控制板2上的功能电路，且，层叠PCB的次顶层和次底层为接地层，以使顶层和 次顶层形成电信号回流，底层和次底层形成电信号回流。本实施例中，将层叠PCB的顶层和底层设为第一信号层，提高了信号质量，且相邻的次顶层、次底层为接地层，从而，使得第一信号层能够与近邻的PCB层(接地层)形成回流，回流路径段，信号质量好，从而提高了第一信号层的抗干扰能力，改善了对车机的EMC性能。
在可选的实施例中，层叠PCB还包括：电源层和两层第二信号层，其中：电源层位于层叠PCB的最内层，以为第二信号层提供电源参考平面；两层第二信号层分别位于次顶层和电源层之间，以及次底层和电源层之间，两层第二信号层为两层第一信号层提供补充走线。在具体实施例中，电源层可以是一层，也可以是两层，当电源层为两层时，两层电源层可以紧挨着布置。第一信号层中的一些关键线路可以通过第二信号层进行走线，例如USB、LVDS、MIPI等，对于对外发射较强的走线，以及抗干扰要求高的走线，均可通过第二信号层进行走线，由此，可以改善整体的EMC性能。
本实施例中，电源层位于层叠PCB的最内层，从而能够为第二信号层提供相同的参考平面。
本实施例中，将走线层设置在层叠PCB的内部，可以将信号走线间隔开来，从而，能够提高信号干扰能力，减少信号对外辐射，继而，提高了信号的稳定性能。
请参考图4，在可选的实施例中，层叠PCB上设有直下的通孔过孔23，各层PCB通过通孔过孔23信号连接。本实施例中，通孔23直下设置，一方面，可以缩短信号回流路径，提高抗扰能力；另一方面，可以减少对外发射干扰信号，提高了行车安全。
请参考图2，在可选的实施例中，第二控制板2为矩形；第二控制板2的标准化器件包括：CPU、DDR 24和电学灵敏器件25，其中，CPU位于第二控制板2中心靠近左侧边的区域，且CPU的任一侧边相对于第二控制板2的任一侧边倾斜设置。具体而言，CPU相对于第二控制板2并非横平竖直地规整布置，CPU相对于第二控制板2的任一侧边具有一定的倾斜角度，并且，CPU位于第二控制板2的左侧，由此，使得第二控制板2的右下角区域具有更大的放置面积。
DDR 24设置在第二控制板2上靠近左侧边的区域，且DDR 24位于CPU对角线的两侧。本实施例中，通过CPU的倾斜设置，而DDR 24位于CPU的两侧，使得DDR 24的走线最短，并且，DDR 24设置在第二控制板2上靠近左侧边的区域，从而有效地利用了第二控制板2左侧的空间，使得DDR 24和CPU的结构紧凑，节省了PCB的面积。
电学灵敏器25件位于第二控制板2上右侧边角区域，边角区域的侧边相对于各自相对的一边更远离CPU。具体地，电学灵敏器25可以是例如高速开关、flash等。在具体实施过程中，电学灵敏器25中，部分器件平行于CPU的侧边布置，部分器件平行于第二控制板2的侧边布置，使得，能够充分利用该边角区域布置更多的电学灵敏器件25。
本实施例中，由于右侧边角区域的侧边更加远离CPU，由此，使得该边角区域能够布置更多的电学元器件，从而节省了PCB的面积；而CPU的任一侧边相对于第二控制板2的任一侧边倾斜设置，DDR 24和电学灵敏器25位于CPU的两侧，从而，使得发热元件整体分散，改善了散热效果。
本实施例还公开了一种汽车中控系统，包括：
人机交互模块，用于接收用户的按键操作，及上述实施例公开的汽车仪表盘显示系统，其中，汽车仪表盘显示系统通过车身连接器与人机交互模块进行数据交互。
依据本申请实施例公开的一种汽车中控系统及其仪表盘显示系统，显示屏的驱动板包括两块控制板，第一控制板与车身连接器适配，使得第一控制板能够适应于车身连接器，读取并解析车身数据，第二控制板上的功能电路为标准化器件，也就是，第二控制板为标准化、平台化的控制板；其中，第一控制板通过命令接口向显示屏提供驱动信号，第二控制板通过数据接口与标准数据接口连接，也就是，第一控制板和第二控制板分别通过标准化接口向显示屏分别提供驱动信号和显示数据；而，第一控制板和第二控制板通过两排插针组电连接，从而，第一方面，可以通过第一控制板来适应不同车型的数据交互，也就是能够为不同的车型定制不同的第一控制板。第二方面，第二控制板是标准化、平台化的控制板，能够通过标准化接口连接至不同的第一控制板、显示屏，即， 第二控制板具有通用性；在第一控制板或第二控制板上的器件出现故障时，只需更换第一控制板或第二控制板即可，减小了维修成本。第三方面，第二控制板在水平面投影处于第一控制板在水平面投影之内，可以节省两块控制板所占的面积，利于实现控制器的整机小型化，并且，通过两排插针的连接方式不仅可以节省PCB表面积，还能够改善连接强度。
此外，通过第一控制板来获取车身数据，生成驱动信号，以及数据指示信号，也就是，实现了通过第一控制板来统一调度、控制数据显示，从而能够提供控制的集中性，避免了因时序不统一而导致的显示数据出错或卡顿的现象。
本领域的技术人员容易理解的是，在不冲突的前提下，上述各优选方案可以自由地组合、叠加。
应当理解，上述的实施方式仅是示例性的，而非限制性的，在不偏离本申请的基本原理的情况下，本领域的技术人员可以针对上述细节做出的各种明显的或等同的修改或替换，都将包含于本申请的权利要求范围内。

Claims (9)

  1. 一种汽车仪表盘显示系统，包括：显示屏(100)，其包括标准驱动接口(101)和标准数据接口(102)，所述显示屏(100)通过所述标准驱动接口(101)接收驱动信号，以显示所述标准数据接口(102)接收到的显示数据；其特征在于，
    所述显示屏(100)的驱动板包括：第一控制板(1)和第二控制板(2)，所述第一控制板(1)与车身连接器(3)适配，所述第二控制板(2)上的功能电路为标准化器件；
    所述第一控制板(1)通过命令接口(11)向所述显示屏(100)提供所述驱动信号；所述第一控制板(1)解析所述车身连接器(3)提供的车身数据，生成所述驱动信号和待显示的数据指示信号；
    所述第二控制板(2)存储有待显示的数据集合，所述数据集合中的数据通过所述数据指示信号进行索引提取；所述第二控制板(2)通过数据接口(22)与所述标准数据接口(102)连接；
    其中，所述第一控制板(1)和所述第二控制板(2)通过接线端(21)电连接；所述第二控制板(2)位于所述第一控制板(1)的上方，且所述第二控制板(2)在水平面投影处于所述第一控制板(1)在水平面投影之内；其中，位于所述第二控制板(2)侧的接线端(21)包括：第一插针组(21a)和第二插针组(21b)，所述第一插针组(21a)中的插针一字排开，所述第二插针组(21b)中的插针一字排开；所述第二控制板(2)具有两相对设置的侧边，所述第一插针组(21a)和所述第二插针组(21b)分别沿着所述两相对设置的侧边依次布置；所述第二控制板(2)通过所述第一插针组(21a)、所述第二插针组(21b)堆叠插接在所述第一控制板(1)上；
    所述第一控制板(1)响应于触发信号，向所述显示屏(100)提供所述驱动信号，并向所述第二控制板(2)提供所述数据指示信号；所述第二控制板(2)响应于所述数据指示信号提取待显示数据，并发送给所述显示屏(100)，以使所述显示屏(100)显示接收到的显示数据，其中，所述待显示数据与所述数据指示信号对应。
  2. 如权利要求1所述的汽车仪表盘显示系统，其特征在于，所述第二控制板(2)上的功能电路通过标准线路连接至位于所述第二控制板(2)侧的接线端(21)。
  3. 如权利要求1所述的汽车仪表盘显示系统，其特征在于，所述第一插针组(21a)中的插针数目多于所述第二插针组(21b)中的插针数目。
  4. 如权利要求1所述的汽车仪表盘显示系统，其特征在于，所述第二控制板(2)上与所述第一控制板(1)重叠的区域布置有电学器件；
    所述汽车仪表盘显示系统还包括：绝缘片(4)，位于所述第一控制板(1)和所述第二控制板(2)之间。
  5. 如权利要求1-4任意一项所述的汽车仪表盘显示系统，其特征在于，所述第二控制板(2)包括多层层叠的层叠PCB；其中：
    所述层叠PCB的顶层和底层为第一信号层，所述第一信号层用于布置所述第二控制板(2)上的功能电路；且，
    所述层叠PCB的次顶层和次底层为接地层，以使所述顶层和所述次顶层形成电信号回流，所述底层和所述次底层形成电信号回流。
  6. 如权利要求5所述的汽车仪表盘显示系统，其特征在于，所述层叠PCB还包括：
    两层第二信号层，分别位于所述次顶层和所述电源层之间，以及所述次底层和所述电源层之间；所述两层第二信号层为两层所述第一信号层提供补充走线；
    电源层，位于所述层叠PCB的最内层，以为所述第二信号层提供电源参考平面。
  7. 如权利要求5所述的汽车仪表盘显示系统，其特征在于，所述层叠PCB上设有直下的通孔过孔(23)，各层PCB通过所述通孔过孔(23)信号连接。
  8. 如权利要求1-7任意一项所述的汽车仪表盘显示系统，其特征在于，所述第二控制板(2)为矩形；所述第二控制板(2)的标准化器件包括：CPU、DDR(24)和电学灵敏器件(25)；
    所述CPU位于所述第二控制板(2)中心靠近左侧边的区域，且所 述CPU的任一侧边相对于所述第二控制板(2)的任一侧边倾斜设置；
    所述DDR(24)设置在所述第二控制板(2)上靠近左侧边的区域，且所述DDR(24)位于所述CPU对角线的两侧；
    所述电学灵敏器件(25)位于所述第二控制板(2)上右侧边角区域，所述边角区域的侧边相对于各自相对的一边更远离所述CPU。
  9. 一种汽车中控系统，其特征在于，包括：
    人机交互模块，用于接收用户的按键操作；及
    如权利要求1-8任意一项所述的汽车仪表盘显示系统，通过所述车身连接器与所述人机交互模块进行数据交互。
PCT/CN2020/121105 2020-08-21 2020-10-15 汽车中控系统及其仪表盘显示系统 WO2022036828A1 (zh)

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