Direct display driving system, direct display driving device and automobile

Abstract

The utility model provides a direct display driving system, which is used for driving single-color or RGB (red, green and blue) direct display of a vehicle-mounted LED (light-emitting diode), and comprises a central computing platform, an area controller and a vehicle-mounted LED module, the area controller comprises an MCU module; the vehicle-mounted LED module comprises a plurality of LED lamps and an LED driving chip; wherein the central computing platform is used for generating a first control instruction and sending the first control instruction to the MCU module; wherein the MCU module is connected with the LED driving chip through a QSPI / OSPI protocol; the MCU module generates a first data instruction according to the received first control instruction and sends the first data instruction to the LED driving chip; and the LED driving chip controls the gray level of each LED lamp in the vehicle-mounted LED module after receiving the first data instruction. According to the technical scheme, under the condition of meeting the requirements of vehicle regulations, the requirements of cost are met, and meanwhile, the application scenes of mini LED direct display are effectively increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of integrated circuits, and in particular relates to a direct display driving system, a direct display driving device and a car. Background Art

[0002] With the development of intelligent and interactive automobiles, more and more automobile parts have been innovated in intelligent concepts to keep up with the development trend of automobiles. In terms of exterior decoration, more and more products with intelligent interaction have been born. In terms of lighting, there are digital projection headlights, intelligent taillight interactive lights, and intelligent welcome interactive lights. Combined with more and more cameras and radar products on cars, as well as more humane and personalized pattern displays, the development of intelligent interaction has entered a new chapter; in order to better realize human-computer interactive display, there are higher requirements for display brightness, color and fineness.

[0003] Traditional outdoor miniLED direct displays are mainly based on FPGA. After being applied to vehicles, the cost pressure, application scenarios and scalability of automotive-grade FPGAs are limited.

[0004] Therefore, proposing a new miniLED direct display solution to better solve the above problems has become a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] The utility model provides a direct display drive system, a direct display drive device and a car to solve the problem of how to meet the cost requirements while meeting the requirements of vehicle regulations and effectively increase the application scenarios of miniLED direct display.

[0006] According to a first aspect of the utility model, a direct display driving system is provided, which is used to drive a monochrome or RGB color direct display of a vehicle-mounted LED lamp under the control of a central computing platform, comprising:

[0007] A regional controller and an on-board LED module; the regional controller includes one or more first MCU modules; the on-board LED module includes a plurality of LED lamps and LED driver chips;

[0008] The first MCU module is controlled by the central computing platform to generate a first data instruction; one or more of the first MCU modules are connected to the LED driver chip via a corresponding QSPI / OSPI protocol; the QSPI / OSPI protocol is used to send the first data instruction generated by the corresponding first MCU module to the LED driver chip;

[0009] The LED driver chip is used to control the grayscale of the corresponding LED lamp in the vehicle-mounted LED module according to the received first data instruction.

[0010] Optionally, the first MCU module is connected to the LED driver chip via a first data line, and the first data line is used to transmit communication information of the QSPI / OSPI protocol, so that the first MCU module is connected to the LED driver chip via the QSPI / OSPI protocol.

[0011] Optionally, each of the first data lines includes 8 data lines.

[0012] Optionally, the number of the first MCU modules is adapted to the number of the LED lamps in the vehicle-mounted LED module.

[0013] Optionally, the vehicle-mounted LED module further includes: an LED scanning chip;

[0014] Wherein, the one or more first MCU modules are connected to the LED scanning chip via a corresponding SPI protocol;

[0015] The first MCU module is controlled by the central computing platform to generate a second data instruction and a first storage address signal; the SPI protocol is used to send the second data instruction and the first storage address signal generated by the corresponding first MCU module to the LED scanning chip;

[0016] The LED scanning chip is used to scan the corresponding LED lights in the vehicle-mounted LED module according to the received second data instruction and the first storage address signal, so as to light up or turn off the corresponding LED lights.

[0017] Optionally, the regional controller further includes: an MCU driver chip;

[0018] The MCU driver chip is used to receive the first control instruction sent by the central computing platform, and drive the corresponding first MCU module to generate the first data instruction according to the received first control instruction;

[0019] The MCU driver chip is used to receive the second control instruction sent by the central computing platform, and drive the corresponding first MCU module to generate the second data instruction and the first storage address information according to the received second control instruction.

[0020] Optionally, it also includes: a DC-DC module; the DC-DC module is connected to a number of the LED lamps, and the DC-DC module is used to provide a stable voltage and constant current to the LED lamps.

[0021] According to a second aspect of the present utility model, a direct display driving device is provided, comprising the direct display driving system described in any one of the first aspect of the present utility model.

[0022] According to a third aspect of the utility model, a car is provided, comprising the direct display driving device described in the second aspect of the utility model.

[0023] The utility model provides a direct display drive system, which replaces the common serial communication or SPI control on the market and uses the QSPI protocol to control the LED driver chip to drive the monochrome or RGB color direct display of the vehicle-mounted LED lamp; while meeting the requirements of vehicle regulations, the technical solution not only solves the cost requirements, but also can effectively increase the application scenarios of miniLED direct display based on the scalability of the functions of the first MCU module because the first MCU module and the QSPI protocol proposed in the technical solution are relatively cheap. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of a module of a direct display driving system provided by an embodiment of the utility model Figure 1 ;

[0025] Figure 2 Schematic diagram of a module of a direct display driving system provided by an embodiment of the utility model Figure 2 ;

[0026] Figure 3 Schematic diagram of a module of a direct display driving system provided by an embodiment of the utility model Figure 3 ;

[0027] Figure 4 Schematic diagram of a module of a direct display driving system provided by an embodiment of the utility model Figure 4 ;

[0028] Figure 5 A schematic diagram of a direct display driving device when the number of the first MCU module provided in a specific embodiment of the utility model is one;

[0029] Figure 6 In a direct display driving device provided in a specific embodiment, when the number of the first MCU module is 1, the scanning waveform of the QSPI protocol is:

[0030] Figure 7 Product parameters when the number of the first MCU module is 1 in the direct display drive system provided by a specific embodiment of the utility model;

[0031] Description of reference numerals:

[0032] 10- Direct display drive system;

[0033] 101-region controller;

[0034] 1011-First MCU module

[0035] 102-car LED module;

[0036] 1021-LED driver chip;

[0037] 1022-LED light;

[0038] 1023-LED line scanning chip;

[0039] 11- Central computing platform. DETAILED DESCRIPTION

[0040] The following will be described in more detail with reference to the schematic diagrams of the direct display drive system, direct display drive device and automobile of the present invention, wherein preferred embodiments of the present invention are shown, and it should be understood that those skilled in the art can modify the present invention described herein and still achieve the advantageous effects of the present invention. Therefore, the following description should be understood as being widely known to those skilled in the art and not as a limitation to the present invention.

[0041] Traditional outdoor miniLED direct displays are mainly based on FPGA. After being applied to vehicles, the cost pressure, application scenarios and scalability of automotive-grade FPGAs are limited.

[0042] In view of this, the inventor of this application proposes to replace the common serial communication or SPI control on the market with the QSPI protocol and MCU used in the flash chip in the prior art; the applicant has found through repeated experiments and demonstrations that using MCU and QSPI protocol to control LED driver chips can greatly increase the communication bandwidth, carry the data output after MCU fast calculation, and increase the LED driving capacity. Therefore, the QSPI / OSPI communication protocol based on MCU is proposed to realize the direct display of single color or RGB color of 10,000-level miniLED.

[0043] It can be seen that this driving solution is a low-cost new driving solution based on line scanning. Through the QSPI or OSPI communication method of the MCU, it can realize monochrome or RGB color direct display of miniLEDs above 10,000 levels.

[0044] The technical solution provided by the utility model greatly increases the communication bandwidth, can carry the data output after the MCU quickly calculates, and increases the LED driving capability; at the same time, while meeting the requirements of automotive regulations, since the MCU and QSPI protocol proposed in the technical solution are relatively cheap, it not only solves the cost requirements, but also can effectively increase the application scenarios of miniLED direct display based on the scalability of MCU functions.

[0045] The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0046] Please refer to Figure 1-Figure 7 , there is a coupling relationship between the LED lamps 1022 in the figure, Figure 1-4 In order to describe the relationship, the LED lamp 1022 is divided into different parts. According to an embodiment of the utility model, a direct display driving system 10 is provided, which is used to drive the monochrome or RGB color direct display of the vehicle-mounted LED lamp 1022 under the control of the central computing platform 11, including:

[0047] A zone controller 101 and a vehicle-mounted LED module 102; the zone controller 101 includes one or more first MCU modules 1011; the vehicle-mounted LED module 102 includes a plurality of LED lamps 1022 and an LED driver chip 1021;

[0048] The first MCU module 1011 is controlled by the central computing platform 11 to generate a first data instruction; one or more of the first MCU modules 1011 are connected to the LED driver chip 1021 via a corresponding QSPI / OSPI protocol; the QSPI / OSPI protocol is used to send the first data instruction generated by the corresponding first MCU module 1011 to the LED driver chip 1021;

[0049] The LED driver chip 1021 is used to control the grayscale of the corresponding LED lamp 1022 in the vehicle-mounted LED module 102 according to the received first data instruction. Figure 1 or Figure 2 shown.

[0050] In one embodiment, when the number of the first MCU module 1011 is one, the first MCU module 1011 is controlled by the central computing platform 11 to generate a first data instruction; the first MCU module 1011 is connected to the LED driver chip 1021 via a corresponding QSPI / OSPI protocol; the QSPI / OSPI protocol is used to send the first data instruction generated by the corresponding first MCU module 1011 to the LED driver chip 1021;

[0051] The LED driver chip 1021 is used to control the grayscale of the corresponding LED lamp 1022 in the vehicle-mounted LED module 102 according to the received first data instruction, such as Figure 1 shown.

[0052] In another embodiment, when the number of the first MCU modules 1011 is several, the several first MCU modules 1011 are synchronously controlled by the central computing platform 11 to generate the first data instruction; more than two of the first MCU modules 1011 are connected to the LED driver chip 1021 through the corresponding QSPI / OSPI protocol; the QSPI / OSPI protocol is used to synchronously send the first data instruction generated by the corresponding several first MCU modules 1011 to the LED driver chip 1021;

[0053] The LED driver chip 1021 is used to control the grayscale of the corresponding LED lamp 1022 in the vehicle-mounted LED module 102 according to the received first data instruction, such as Figure 2 shown.

[0054] The other number of first MCU modules 1011 are not shown in the figure, and their structures are similar to the aforementioned structures of the present invention, which will not be described in detail herein.

[0055] The utility model provides a direct display drive system 10, which replaces the common serial communication or SPI control on the market and uses the QSPI protocol to control the LED driver chip 1021 to drive the monochrome or RGB color direct display of the vehicle-mounted LED lamp 1022; this technical solution meets the requirements of vehicle regulations. Since the first MCU module 1011 and the QSPI protocol proposed in the technical solution are relatively cheap, it not only solves the cost requirements, but also can effectively increase the application scenarios of miniLED direct display based on the scalability of the functions of the first MCU module 1011.

[0056] It can greatly increase the communication bandwidth, carry the data output after MCU fast calculation, and increase the LED driving capability.

[0057] In one embodiment, the first MCU module 1011 is connected to the LED driver chip 1021 via a first data line, and the first data line is used to transmit communication information of the QSPI / OSPI protocol, so that the first MCU module 1011 is connected to the LED driver chip 1021 via the QSPI / OSPI protocol.

[0058] In one embodiment, each of the first data lines includes 8 data lines, which greatly increases the communication bandwidth, can carry the data output after the MCU quickly calculates, and increases the LED driving capability.

[0059] In one embodiment, the number of the first MCU modules 1011 is adapted to the number of the LED lamps 1022 in the vehicle-mounted LED module 102, so as to achieve 10,000-level and 100,000-level control.

[0060] In one embodiment, the vehicle-mounted LED module 102 further includes: an LED scanning chip 1023;

[0061] The one or more first MCU modules 1011 are connected to the LED scanning chip 1023 via a corresponding SPI protocol;

[0062] The first MCU module 1011 is controlled by the central computing platform 11 to generate a second data instruction and a first storage address signal; the SPI protocol is used to send the second data instruction and the first storage address signal generated by the corresponding first MCU module 1011 to the LED scanning chip 1023;

[0063] The LED scanning chip 1023 is used to scan the corresponding LED light 1022 in the vehicle-mounted LED module 102 according to the received second data instruction and the first storage address signal, so as to light up or turn off the corresponding LED light 1022.

[0064] In one implementation, when the number of the first MCU module 1011 is one, the first MCU module 1011 is connected to the LED scanning chip 1023 via a corresponding SPI protocol;

[0065] The first MCU module 1011 is controlled by the central computing platform 11 to generate a second data instruction and a first storage address signal; the SPI protocol is used to send the second data instruction and the first storage address signal generated by the first MCU module 1011 to the LED scanning chip 1023;

[0066] The LED scanning chip 1023 is used to scan the LED lamp 1022 in the vehicle-mounted LED module 102 according to the received second data instruction and the first storage address signal, so as to light up or turn off the corresponding LED lamp 1022; Figure 3 As shown;

[0067] When there are multiple first MCU modules 1011, the multiple first MCU modules 1011 are connected to the LED scanning chip 1023 through a corresponding SPI protocol;

[0068] The first MCU modules 1011 are all controlled by the central computing platform 11 to generate the second data instruction and the first storage address signal accordingly; the SPI protocol is used to send the second data instruction and the first storage address signal generated by the corresponding first MCU module 1011 to the LED scanning chip 1023;

[0069] The LED scanning chip 1023 is used to scan the corresponding LED lamp 1022 in the vehicle-mounted LED module 102 according to the received second data instruction and the first storage address signal, so as to light up or turn off the corresponding LED lamp 1022. Figure 4 shown.

[0070] In one embodiment, the regional controller 101 further includes: an MCU driver chip ( Figure 1-4 not shown);

[0071] The MCU driver chip is used to receive the first control instruction sent by the central computing platform 11, and drive the corresponding first MCU module 1011 to generate the first data instruction according to the received first control instruction;

[0072] The MCU driver chip is used to receive the second control instruction sent by the central computing platform 11, and drive the corresponding first MCU module 1011 to generate the second data instruction and the first storage address information according to the received second control instruction.

[0073] In one embodiment, it further includes:

[0074] DC-DC Module( Figure 1-4 The DC-DC module is connected to a plurality of the LED lamps 1022, and the DC-DC module is used to provide a constant voltage and a constant current to the LED lamps 1022 to ensure that the current of the LED lamps 1022 is stable.

[0075] According to an embodiment of the present invention, a direct display driving device is further provided, comprising the direct display driving system 10 described in any one of the aforementioned embodiments of the present invention.

[0076] In a specific embodiment, the specific structure of the direct display driving device is described by taking the case where the number of the first LED module is 1 as an example; the direct display driving device further includes: an Ethernet Drive IC, an LDO, and an external flash IC (flash chip driver) are all arranged in the regional controller 101, and are used to control or drive the first LED module;

[0077] LDO is used to implement the sleep wake-up solution of MCU, so that the whole system can maintain the lowest power consumption when not working, thus saving energy. KL30 is used to provide power supply voltage to LDO;

[0078] External flash IC (flash chip driver) can realize the pre-stored video function, and can display fixed video images in real time without downloading and waiting, which increases the stability and timeliness of the system;

[0079] The LED driver chip 1021 is an LED Drive IC, the LED line scan chip 1023 is a lineScan IC, and the DC-DC module is a DC-DC IC, which is used to provide a 4.5V voltage to the LED lamp 1022 board; the first MCU module 1011 and the LED driver chip 1021 are connected via a QSPI protocol;

[0080] The central computing platform 11 communicates with the first MCU module 1011 via the vehicle-mounted CANFD / Ethernet, and can flexibly control the image display of the LED screen, display different effects under various working conditions, and achieve personalization and intelligence, such as Figure 5 shown.

[0081] According to an embodiment of the present utility model, a car is also provided, comprising the direct display driving device described in the aforementioned embodiment of the present utility model.

[0082] The specific structure of the direct display driving device composed of multiple first MCU modules 1011 is similar to the specific embodiment, and the utility model will not be repeated here.

[0083] like Figure 6 As shown, in the direct display driving device provided by the utility model, when the number of the first MCU module 1011 is 1, the scanning waveform of the QSPI protocol is:

[0084] As can be seen from the figure, the QSPI protocol is used for the first MCU module 1011 to perform double-edge sampling and send the sampling signal to the central computing platform 11, and the central computing platform 11 generates a control instruction signal according to the received sampling information. Among them, the use of the line scanning drive solution can reduce the number of LED driver chips 1021 while ensuring the visual effect, increase the LED driving capacity of the entire system, and significantly reduce the solution cost;

[0085] Figure 7 In the direct display driving system provided by the present invention, when the number of the first MCU module 1011 is 1, the product parameters are given in a specific example.

[0086] Based on the advantages of cost and technology, it is foreseeable that in the future automotive miniLED direct display field, new products that are more in line with the development of automotive intelligent interaction will be born.

[0087] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A direct display driving system, used to drive the monochrome or RGB color direct display of the vehicle-mounted LED lamp under the control of the central computing platform, characterized in that: include: A zone controller and a vehicle-mounted LED module; the zone controller includes one or more first MCU modules; The vehicle-mounted LED module includes a number of LED lamps and LED driver chips; The first MCU module is controlled by the central computing platform to generate a first data instruction; one or more of the first MCU modules are connected to the LED driver chip via a corresponding QSPI / OSPI protocol; the QSPI / OSPI protocol is used to send the first data instruction generated by the corresponding first MCU module to the LED driver chip; The LED driver chip is used to control the grayscale of the corresponding LED lamp in the vehicle-mounted LED module according to the received first data instruction.

2. The direct display driving system according to claim 1, characterized in that: The first MCU module is connected to the LED driver chip via a first data line, and the first data line is used to transmit communication information of the QSPI / OSPI protocol, so that the first MCU module is connected to the LED driver chip via the QSPI / OSPI protocol.

3. The direct display driving system according to claim 2, characterized in that: Each of the first data lines includes 8 data lines.

4. The direct display driving system according to claim 3, characterized in that: The number of the first MCU modules is adapted to the number of the LED lamps in the vehicle-mounted LED module.

5. The direct display driving system according to claim 4, characterized in that: The vehicle-mounted LED module further includes: an LED scanning chip; Wherein, the one or more first MCU modules are connected to the LED scanning chip via a corresponding SPI protocol; The first MCU module is controlled by the central computing platform to generate a second data instruction and a first storage address signal; the SPI protocol is used to send the second data instruction and the first storage address signal generated by the corresponding first MCU module to the LED line scanning chip; The LED scanning chip is used to scan the corresponding LED lights in the vehicle-mounted LED module according to the received second data instruction and the first storage address signal, so as to light up or turn off the corresponding LED lights.

6. The direct display driving system according to claim 5, characterized in that: The regional controller also includes: an MCU driver chip; The MCU driver chip is used to receive the first control instruction sent by the central computing platform, and drive the corresponding first MCU module to generate the first data instruction according to the received first control instruction; The MCU driver chip is used to receive the second control instruction sent by the central computing platform, and drive the corresponding first MCU module to generate the second data instruction and the first storage address information according to the received second control instruction.

7. The direct display driving system according to claim 6, characterized in that: Also includes: DC-DC modules; The DC-DC module is connected to a plurality of the LED lamps, and is used to provide a constant voltage and current to the LED lamps.

8. A direct display driving device, characterized in that: It comprises the direct display driving system as described in any one of claims 1 to 7.

9. A car, characterized in that: It includes the direct display driving device as described in claim 8.

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