Intelligent lighting controller for vehicle lamp production line test

Abstract

The invention belongs to the field of vehicle lamp driving control, and particularly relates to a vehicle lamp production line test intelligent lighting controller which comprises a control system, a vehicle lamp circuit and a peripheral interface, the vehicle lamp circuit supplies power to the control system and the peripheral interface, and the control system comprises an MCU, a FLASH, a USB, the Ethernet, an FPD-LINK, a GMSL, an LVDS, a UART, a CAN and an LIN. The peripheral interface comprises a power supply interface, a communication interface, a video interface, a burning interface, seven shift switches, 27 switch keys and fifteen output interfaces, the peripheral interface is connected with the MCU, before working, software is burnt for the MCU through the burning interface, and then the MCU configures functions for the shift switches, the switch keys and the output interfaces through the software; during testing, each functional interface of the to-be-tested vehicle lamp is connected with the communication interface, the video interface and the corresponding interface in the fifteen output interfaces, and finally the lighting function of the lighting controller is realized by pressing the switch button. According to the invention, a BCM lighting function and a vehicle multimedia domain control image or video transmission function can be simulated, and the test cost is reduced.

Description

Technical Field

[0001] The present invention belongs to the field of vehicle lamp drive control, and in particular relates to production line testing lighting requirements for vehicle lamp products. Background Art

[0002] The functional integration of automobile lights is becoming higher and higher, and the technological content is getting higher and higher. With the introduction of new technologies such as ADB headlights, HD pixel headlights, DLP pixel headlights, and ISD intelligent interactive lights, the test operation of the headlight function production line is becoming more and more complicated, and the production cost of the test equipment is getting higher and higher. There is an urgent need for a lighting controller that meets the lighting needs of headlight production and testing, is simple to operate, and has low cost. Summary of the invention

[0003] In order to solve the above problems existing in the prior art, the present invention provides an intelligent lighting controller for testing a vehicle lamp production line, which can simulate the vehicle BCM lighting function and the vehicle multimedia domain control image or video transmission function, and drive and control the front combination lamps or rear combination lamps to realize various lighting functions.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an intelligent lighting controller for testing a car light production line, comprising a control system, a car light circuit and a peripheral interface, the car light circuit supplies power to the control system and the peripheral interface, the car light circuit comprises an input power supply circuit, an output power supply circuit, a control system circuit, an electronic component circuit and a control logic circuit, the control system comprises MCU, FLASH, USB, Ethernet, FPD-LINK, GMSL, LVDS, UART, CAN and LIN, FLASH, USB, Ethernet, FPD-LINK, GMSL, LVDS, UART, CAN and LIN are connected to the MCU. The peripheral interfaces include power interface, communication interface, video interface, burning interface, seven shift switches, twenty-seven switch buttons and fifteen output interfaces. The peripheral interfaces are connected to the MCU. Before work, the software is first burned to the MCU through the burning interface, and the MCU then configures the functions of the seven shift switches, twenty-seven switch buttons and fifteen output interfaces through the software. When testing, the functional interfaces of the headlights to be tested are connected to the corresponding interfaces in the communication interface, video interface and fifteen output interfaces, and then the shift switches are set according to the functions of the headlights to be tested. Finally, the switch button is pressed to realize the lighting function of the lighting controller.

[0005] Furthermore, the input power supply circuit includes a power supply interface, a protection circuit and a filter circuit. The power supply interface is connected to a 12V DC power supply. The input power supply circuit supplies power to the LDO and fifteen PMOS switches respectively. The LDO supplies power to the control system, the electronic component circuit and the control logic circuit. The fifteen PMOS switches are respectively connected to fifteen output interfaces through the output power supply circuit. The fifteen output interfaces are connected to the control system MCU through the fifteen PMOS switches.

[0006] Furthermore, the communication interface includes a CAN interface and a LIN interface, the CAN interface is connected to the control system MCU via the control system CAN, and the LIN interface is connected to the control system MCU via the control system LIN.

[0007] Furthermore, the video interface includes an Ethernet interface, an FPD-LINK interface, a GMSL interface and a LVDS interface. The Ethernet interface is connected to the control system MCU through the control system Ethernet, the FPD-LINK interface is connected to the control system MCU through the control system FPD-LINK, the GMSL interface is connected to the control system MCU through the control system GMSL, and the LVDS interface is connected to the control system MCU through the control system LVDS.

[0008] Furthermore, the peripheral interface also includes a USB interface and a UART interface. The USB interface is connected to the control system MCU through the control system USB. The USB interface is connected to the computer host computer and communicates with the computer host computer through the control system USB, replacing one or both of the shift switch and the switch button to realize the lighting function. The UART interface is connected to the control system MCU through the control system UART. More than two intelligent lighting controllers are cascaded through the UART interface to expand functions.

[0009] Furthermore, the control logic circuit includes a standby low power consumption control logic circuit, an enable control logic circuit and a function multiplexing control logic circuit.

[0010] Furthermore, the filter circuit includes a capacitor filter circuit, an RC filter circuit, an LC filter circuit and a CLC filter circuit.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The present invention can simulate the lighting function of the vehicle BCM and the image or video transmission function of the vehicle multimedia domain control. It can drive and control the front combination lamps including the left low beam, left high beam, left turn signal, left daytime running light, left position light, left corner light, left fog light, right low beam, right high beam, right turn signal, right daytime running light, right position light, right corner light, right fog light, LOGO light, ADB headlight, HD pixel headlight, DLP pixel headlight, ISD intelligent interactive light and other functions. It can also drive and control the rear combination lamps including the left brake light, left reverse light, left turn signal, left position light, left fog light, right brake light, right reverse light, right turn signal, right position light, right fog light, high-mounted brake light, license plate light, ISD intelligent interactive light and other functions;

[0013] 2. The present invention integrates 4 video interfaces, meeting the requirements of HD headlights, DLP headlights, ISD intelligent interactive lights, etc. for video sources;

[0014] 3. The present invention can meet the requirements of a hard-wire solution without communication for front combination lamps or rear combination lamps, a CAN communication solution, a LIN communication solution, or a combination of hard-wire and communication solution;

[0015] 4. The hardware circuit of the present invention can be platformized, and the software can be flashed with different versions through the burning interface according to different production and testing requirements, which can effectively reduce costs and improve production and testing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural block diagram of the present invention. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The meanings of some English words in the present invention are as follows: MCU (Microcontroller Unit): microcontroller unit; FPD-LINK (Flat Panel Display Link): video serial communication; GMSL (Gigabit Multimedia Serial Link): Gigabit multimedia serial link; LVDS (Low Voltage Differential Swing): low voltage differential signal; UART (Universal Asynchronous Receiver / Transmitter): universal asynchronous receiver / transmitter; SPI (Serial Peripheral interface): serial peripheral interface; QSPI (Queued Serial Peripheral interface): extended serial peripheral interface; LDO (Low Dropout Voltage Regulator): low voltage dropout linear regulator; BCM (Body Control Module): body control module; ECU (Electronic Control Unit): electronic control unit; ADC (Analog-to-Digital Converter): analog-to-digital converter; DAC (Digital-to-Analog Converter): digital-to-analog signal converter; GPIO (General Purpose I / O) Input / Output): general input / output.

[0018] See also Figure 1The technical solution provided by the present invention is: an intelligent lighting controller for testing a vehicle lamp production line, which can simulate the vehicle BCM lighting function and the vehicle multimedia domain control image or video transmission function, and can meet the production line testing lighting needs of vehicle lamp products such as front combination lamps and rear combination lamps. Vehicle lamp products such as front combination lamps and rear combination lamps include hard-wire solutions without communication, CAN communication solutions, LIN communication solutions, and hard-wire plus communication combination solutions. The intelligent lighting controller includes a control system, a lamp circuit and a peripheral interface. The lamp circuit supplies power to the control system and the peripheral interface. The lamp circuit includes an input power supply circuit, an output power supply circuit, a control system circuit, an electronic component circuit and a control logic circuit. The electronic components used in the lighting controller are automotive grade or industrial grade. The control system includes MCU1, FLASH2, USB3, Ethernet 4, FPD-LINK5, GMSL6, LVDS7, UART8, CAN9 and LIN10. FLASH2, USB3, Ethernet 4, FPD-LINK5, GMSL6, LVDS7, UART8, CAN9 and LIN10 are all connected to MCU1. FLASH2 transmits the video or image signal to MCU1, and MCU1 transmits the video or image signal to USB3, Ethernet 4, FPD-LINK5, GMSL6, LVDS7, UART8, CAN9 and LIN10 respectively. LIN10 transmits signals, and the peripheral interfaces include a power interface 12, a communication interface, a video interface, a burning interface 11, seven shift switches 22, twenty-seven switch buttons 23 and fifteen output interfaces 24. The burning interface 11 is used to burn software of different functional versions to MCU1. The seven shift switches 22 are flexibly configured with corresponding functions by MCU1 through software, and then different working modes are configured through the shift switch 22 buttons. The twenty-seven switch buttons 23 are flexibly configured with corresponding functions by MCU1 through software, and then the lighting function of the lighting controller is triggered through each switch button 23. The fifteen output interfaces 24 are connected to the front combination lamps or rear combination lamps of the hardware solution without communication, and MCU1 flexibly configures corresponding functions to the fifteen output interfaces 24 through software, and connects to the corresponding output interface 24 according to the function of the vehicle lamp to be tested. The peripheral interface is connected to MCU1.

[0019] Before the present invention works, the software is first burned into MCU1 through the burning interface 11, and MCU1 then configures the functions of seven shift switches 22, twenty-seven switch buttons 23 and fifteen output interfaces 24 through the software. During the test, the functional interfaces of the vehicle lights to be tested are connected with the communication interface, the video interface and the corresponding interfaces in the fifteen output interfaces 24. Then, the shift switches 22 are set according to the functions of the vehicle lights to be tested to configure different working modes for the lighting controller. Finally, the switch button 23 is pressed to realize the lighting function of the lighting controller.

[0020] Specifically, the input power supply circuit includes a power supply interface 12, a protection circuit and a filter circuit. The power supply interface 12 is connected to a 12V DC power supply, the input voltage range is 8-18V, and the maximum input current is 40A. The input power supply circuit is connected to the LDO and fifteen PMOS switches 21 for power supply respectively. The LDO outputs 5V to power the control system, the electronic component circuit and the control logic circuit. The fifteen PMOS switches 21 are connected to the fifteen output interfaces 24 through 15 12V output power supply circuits respectively. The output voltage range of each output interface 24 is 8-18V, and the maximum output current of each output is 5A. The fifteen output interfaces 24 are connected to the control system MCU1 through the fifteen PMOS switches 21, and each output is controlled to be turned on and off by the PMOS switch 21.

[0021] Specifically, the communication interface includes a CAN interface 19 and a LIN interface 20. The CAN interface 19 is connected to the control system MCU1 through the control system CAN9, and the LIN interface 20 is connected to the control system MCU1 through the control system LIN10. The control systems CAN9 and LIN10 respectively simulate the CAN9 transceiver and LIN10 transceiver functions of the body controller BCM. When the lamp to be tested is a front combination lamp or a rear combination lamp of the LIN communication scheme, the lamp to be tested is connected through the LIN interface 20, and MCU1 sends a signal through LIN10 to execute each lighting instruction. When the lamp to be tested is a front combination lamp or a rear combination lamp of the CAN communication scheme, the lamp to be tested is connected through the CAN interface 19, and MCU1 sends a signal through CAN9 to execute each lighting instruction.

[0022] Specifically, the video interface includes an Ethernet interface 14, an FPD-LINK interface 15, a GMSL interface 16 and a LVDS interface 17. The Ethernet interface 14 is connected to the control system MCU1 through the control system Ethernet 4, the FPD-LINK interface 15 is connected to the control system MCU1 through the control system FPD-LINK5, the GMSL interface 16 is connected to the control system MCU1 through the control system GMSL6, and the LVDS interface 17 is connected to the control system MCU1 through the control system LVDS7. Ethernet 4 and Ethernet interface 14 comply with the Ethernet physical layer of the 100BASE-T1 standard of IEEE802.3bw, and comply with the RGMII, RMII and MII interface specifications, and are used for image or video signal transmission between the lighting controller and the computer, and between the lighting controller and the vehicle lamp under test; FPD-LINK5 and FPD-LINK interface 15 support serializing RGB888 image or video signals into FPD-LINK III signals, and are used for image or video signal transmission between the lighting controller and the vehicle lamp under test; GMSL6 and GMSL interface 16 support serializing RGB888 image or video signals into GMSL signals, and are used for image or video signal transmission between the lighting controller and the vehicle lamp under test; LVDS7 and LVDS interface 17 support conversion of RGB888 image or video signals into LVDS signals, and are used for image or video signal transmission between the lighting controller and the vehicle lamp under test. When the lamps to be tested have added HD pixel headlights, DLP pixel headlights, ISD smart interactive lights and other lights that require video signal input on the basis of conventional lighting functions, the intelligent lighting controller of the car lamp production line test simulates the vehicle BCM and multimedia ECU, and connects the lamps to be tested through Ethernet interface 14 or FPD-LINK interface 15 or GMSL interface 16 or LVDS interface 17 according to the video interface type of the lamps to be tested, and finally executes the transmission of video or image signals in FLASH2 through sequential signal transmission of FLASH2 and MCU1.

[0023] Specifically, the peripheral interface also includes a USB interface 13 and a UART interface 18. The USB interface 13 is connected to the control system MCU1 through the control system USB3. The USB interface 13 is connected to the computer host computer and communicates with the computer host computer through the control system USB3, replacing one or both of the shift switch 22 and the switch button 23 to realize the lighting function. The USB interface 13 supports USB2.0 and USB3.0. The UART interface 18 is connected to the control system MCU1 through the control system UART8. More than two intelligent lighting controllers are cascaded through the UART interface 18 for functional expansion. When the number of functional interfaces of the lamp to be tested exceeds the existing number of functional interfaces of the lighting controller, or multiple lamps of the same type need to be tested at the same time, the UART interface 18 is needed.

[0024] Specifically, the control logic circuit includes a standby low power consumption control logic circuit, an enable control logic circuit and a function multiplexing control logic circuit.

[0025] Specifically, the filter circuit includes a capacitor filter circuit, an RC filter circuit, an LC filter circuit and a CLC filter circuit.

[0026] Specifically, the control system circuit is a circuit that supplies power to the control system, and the electronic component circuit is a circuit that supplies power to the electronic components used in the lighting controller.

[0027] Specifically, MCU1 has graphics processing capabilities and has interfaces such as USB, Ethernet, FPD LINK, RGB888, LVDS, UART, CAN, LIN, SPI, ADC, DAC, and GPIO; the FLASH2 chip has a storage capacity greater than 64Mbit and has an SPI / QSPI interface.

[0028] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intelligent lighting controller for testing a vehicle lamp production line, characterized in that: The invention comprises a control system, a headlight circuit and a peripheral interface, wherein the headlight circuit supplies power to the control system and the peripheral interface, wherein the headlight circuit comprises an input power supply circuit, an output power supply circuit, a control system circuit, an electronic component circuit and a control logic circuit, wherein the control system comprises an MCU (1), FLASH (2), a USB (3), an Ethernet (4), an FPD-LINK (5), a GMSL (6), a LVDS (7), a UART (8), a CAN (9) and a LIN (10), wherein the FLASH (2), the USB (3), the Ethernet (4), the FPD-LINK (5), the GMSL (6), the LVDS (7), the UART (8), the CAN (9) and the LIN (10) are all connected to the MCU (1), and the peripheral interface is connected to the MCU (1). The interface comprises a power interface (12), a communication interface, a video interface, a burning interface (11), seven shift switches (22), twenty-seven switch buttons (23) and fifteen output interfaces (24). The peripheral interface is connected to an MCU (1). Before operation, software is first burned into the MCU (1) through the burning interface (11). The MCU (1) then configures functions for the seven shift switches (22), the twenty-seven switch buttons (23) and the fifteen output interfaces (24) through software. During testing, each functional interface of the vehicle lamp to be tested is connected to a corresponding interface among the communication interface, the video interface and the fifteen output interfaces (24). Then, the shift switch (22) is set according to the function of the vehicle lamp to be tested. Finally, the switch button (23) is pressed to realize the lighting function of the lighting controller.

2. The intelligent lighting controller for testing vehicle lamp production line according to claim 1, characterized in that: The input power supply circuit comprises a power supply interface (12), a protection circuit and a filter circuit. The power supply interface (12) is connected to a 12V direct current. The input power supply circuit is connected to the LDO and fifteen PMOS switches (21) for power supply respectively. The LDO supplies power to the control system, the electronic component circuit and the control logic circuit. The fifteen PMOS switches (21) are respectively connected to fifteen output interfaces (24) through the output power supply circuit. The fifteen output interfaces (24) are connected to the control system MCU (1) through the fifteen PMOS switches (21).

3. The intelligent lighting controller for testing a vehicle lamp production line according to claim 2, characterized in that: The communication interface comprises a CAN interface (19) and a LIN interface (20); the CAN interface (19) is connected to a control system MCU (1) via a control system CAN (9); and the LIN interface (20) is connected to a control system MCU (1) via a control system LIN (10).

4. The intelligent lighting controller for testing a vehicle lamp production line according to claim 3, characterized in that: The video interface comprises an Ethernet interface (14), an FPD-LINK interface (15), a GMSL interface (16) and an LVDS interface (17); the Ethernet interface (14) is connected to the control system MCU (1) via the control system Ethernet (4); the FPD-LINK interface (15) is connected to the control system MCU (1) via the control system FPD-LINK (5); the GMSL interface (16) is connected to the control system MCU (1) via the control system GMSL (6); and the LVDS interface (17) is connected to the control system MCU (1) via the control system LVDS (7).

5. The intelligent lighting controller for testing vehicle lamp production line according to claim 4, characterized in that: The peripheral interface also includes a USB interface (13) and a UART interface (18); the USB interface (13) is connected to the control system MCU (1) via the control system USB (3); the USB interface (13) is connected to a computer host computer and communicates with the computer host computer via the control system USB (3); it replaces one or both of the shift switch (22) and the switch button (23) to realize the lighting function; the UART interface (18) is connected to the control system MCU (1) via the control system UART (8); and two or more intelligent lighting controllers are cascaded via the UART interface (18) to perform functional expansion.

6. The intelligent lighting controller for testing a vehicle lamp production line according to claim 1, characterized in that: The control logic circuit includes a standby low power consumption control logic circuit, an enable control logic circuit and a function multiplexing control logic circuit.

7. The intelligent lighting controller for testing a vehicle lamp production line according to claim 2, characterized in that: The filter circuit includes a capacitor filter circuit, an RC filter circuit, an LC filter circuit and a CLC filter circuit.

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