CN114545806A

CN114545806A - Vehicle-mounted lighting intelligent control chip

Info

Publication number: CN114545806A
Application number: CN202011336006.8A
Authority: CN
Inventors: 徐磊
Original assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Current assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2022-05-27
Anticipated expiration: 2040-11-25
Also published as: CN114545806B

Abstract

The invention relates to an improvement of a vehicle lighting technology, in particular to a vehicle lighting intelligent control chip, which adopts a system-on-chip SOC technology to package a power supply, communication, control and intelligent algorithm into a special chip and comprises a DMA (direct memory access) transmission unit, a reset unit, a 32-bit RISC-V (reduced instruction set computer-V) processing unit, a JTAG (joint test action group) debugging unit, a DDR (double data rate) storage unit, a power supply control management unit, a 9-axis acceleration detection unit, a bus communication unit, an AI (Artificial intelligence) auxiliary operation unit and a general peripheral unit; the DMA transmission unit, the reset unit, the 32-bit RISC-V processing unit, the JTAG debugging unit, the DDR storage unit, the power control management unit, the 9-AXIs acceleration detection unit, the bus communication unit, the AI auxiliary operation unit and the universal peripheral unit are all interconnected through an AXI bus, and the device has the characteristics of small volume, good EMC performance, high response speed, good stability, short design cycle and the like; the problems of complex design, poor EMC performance, slow response speed, poor stability, long design period and the like of the conventional circuit are solved.

Description

Vehicle-mounted lighting intelligent control chip

Technical Field

The invention relates to an improvement of a vehicle lighting technology, in particular to a vehicle lighting intelligent control chip.

Background

With the rapid development of automatic driving, people have higher and higher requirements on the performance of automobile lamps. The car lamp is not a functional product in the traditional sense, and people are more developing the intelligent property of the car lamp. Therefore, the requirements for the safety and performance of products are higher and higher, and the control circuit of the car lamp is more and more complex, thereby bringing difficulty and risk to the design of the products invisibly.

With the gradual complexity of the control circuit, the stability, electromagnetic compatibility (EMC) and environmental tests of the product all bring great influence, which brings great difficulty to the design cycle, reusability and iteration of the product.

Disclosure of Invention

The invention aims to solve the technical problem and overcome the existing defects, and provides a vehicle-mounted lighting intelligent control chip which adopts a system-on-chip (SOC) technology to package a power supply, communication, control and intelligent algorithm into a special chip.

In order to solve the technical problems, the invention provides the following technical scheme: a vehicle-mounted lighting intelligent control chip comprises a DMA transmission unit, a reset unit, a 32-bit RISC-V processing unit, a JTAG debugging unit, a DDR storage unit, a power supply control management unit, a 9-axis acceleration detection unit, a bus communication unit, an AI auxiliary operation unit and a general peripheral unit;

the DMA transmission unit, the reset unit, the 32-bit RISC-V processing unit, the JTAG debugging unit, the DDR storage unit, the power control management unit, the 9-AXIs acceleration detection unit, the bus communication unit, the AI auxiliary operation unit and the general peripheral unit are all interconnected through an AXI bus.

Preferably, the general peripheral unit includes an IO interface module, an SPI module, a serial port module, and an I2C module.

Preferably, the bus communication unit comprises a CAN protocol control module, a CAN fault detection module, a communication power consumption management module I, a CAN physical signal conversion module and a communication control module, the communication power consumption management module I, the CAN physical signal conversion module and the CAN fault detection module are all connected with the CAN protocol control module, and the CAN protocol control module is connected with the communication control module.

Preferably, the bus communication unit further comprises an LIN protocol control module, a second communication power consumption management module, an LIN fault detection module and an LIN physical signal conversion module; and the second communication power consumption management module, the LIN fault detection module and the LIN physical signal conversion module are all connected with the LIN protocol control module, and the LIN protocol control module is also connected with the communication control module.

Preferably, the bus communication unit further includes an ethernet protocol layer control module, and the ethernet protocol layer control module is also connected to the communication control module.

Preferably, the power control management unit comprises a BOOST module, a BUCK module, a multi-way switch module and a linear power output module;

the BOOST module is connected with the BUCK voltage reduction module, the BUCK voltage reduction module is connected with the multi-way switch module, and the multi-way switch module is connected with the linear power output module.

Preferably, the power management module is further connected with the linear power output module, the BOOST module, the first communication power management module and the second communication power management module respectively.

The invention has the beneficial effects that: the vehicle-mounted lighting intelligent control chip has the characteristics of small volume, good EMC performance, high response speed, good stability, short design period and the like; the problems of complex design, poor EMC performance, slow response speed, poor stability, long design period and the like of the existing circuit are solved.

Drawings

FIG. 1 is a block diagram of an on-board intelligent lighting control chip of the present invention;

FIG. 2 is a block diagram of a communication control module;

FIG. 3 is a schematic diagram of a power control management unit;

fig. 4 is a schematic diagram of the AI auxiliary arithmetic unit.

Detailed Description

The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description, and is in no way intended to limit the invention.

As shown in FIG. 1, the vehicle lighting intelligent control chip of the invention mainly comprises a DMA transmission unit, a reset unit, a 32-bit RISC-V processing unit, a JTAG debugging unit, a DDR storage unit, a power control management unit, a 9-axis acceleration detection unit, a bus communication unit, an AI auxiliary operation unit and a general peripheral unit. The DMA transmission unit is mainly responsible for the through data transmission among all units. The reset unit mainly plays a role in restarting and resetting the whole chip, the 32-bit RISC-V processing unit is responsible for the work management and operation of each unit, and the JTAG debugging unit is responsible for the program online simulation and debugging work of the whole chip. The DDR memory unit is a memory management unit and is mainly responsible for management work of RAM, ROM and external memory. The power control management unit is mainly responsible for power supply management of all units inside the chip and power supply management of external connected equipment. The 9-axis acceleration detection unit mainly realizes direction detection of acceleration, angle and magnetic force. The bus communication unit mainly realizes the communication interaction work with the vehicle CAN, LIN and Ethernet. The AI auxiliary operation unit mainly assists the intelligent algorithm auxiliary operation of the 32-bit RISC-V processing unit, plays a role of an intelligent algorithm accelerating engine and improves the speed of the intelligent algorithm. The universal peripheral unit mainly comprises a conventional IO interface module, an SPI module, a serial port module, an I2C module and the like. All main channels forming the unit data interaction are supported by an AXI bus, and the DMA transmission unit 1 is an auxiliary part of the data interaction between unit modules.

As shown in fig. 2, the communication control module is mainly responsible for the communication related control of CAN, LIN and ethernet and the management work of data interaction of the AXI bus. The first communication power consumption management module and the first communication power consumption management module mainly realize power consumption control of a CAN \ LIN \ Ethernet communication process. The communication LIN protocol control module integrates protocol layer protocols related to LIN communication and is mainly responsible for related work such as data packaging, transmission, network management and the like. The LIN fault detection module can realize the detection of the relevant communication faults of BUS _ OFF, open circuit, short circuit, overtime and the like of communication. The LIN physical signal conversion module realizes the conversion work of the physical signal and can modulate the voltage of 5V to 13V. The CAN protocol control module realizes related work of a network layer, a transmission layer and a link layer of a CAN communication national standard, including management work of network management, data transmission and data reception. The CAN fault detection module mainly realizes various fault detections in the CAN communication process, including BUS _ OFF, open circuit, short circuit, overtime detection and the like. The CAN physical signal conversion module mainly realizes the modulation and demodulation of CAN communication signals and the conversion of differential signals.

As shown in fig. 3, the power control and management unit mainly implements power management and control inside the chip and external power management. The power consumption management module mainly realizes the power consumption management work of each unit module inside and outside the chip. The BOOST module mainly realizes the boosting work of external power supply and is responsible for supplying power to the BUCK voltage reduction module. The BUCK voltage reduction module mainly realizes constant current power supply of external drive, and single-channel 1.5A output can be realized to the maximum extent. The linear power output module mainly realizes adjustable voltage stabilization output of 5V-25V. The multi-way switch module mainly integrates the functions of phase shift control, external short circuit and open circuit detection, spread spectrum output, switch control output and the like.

As shown in fig. 4, the AI auxiliary operation unit mainly implements deduction and training of an accelerated deep learning algorithm, and the AI auxiliary operation unit mainly includes three modules: the system comprises a scheduling engine module, an intelligent channel module and a learning algorithm acceleration module. The scheduling engine module mainly realizes the task allocation and the work efficiency improvement of the learning algorithm acceleration module. The intelligent channel module mainly realizes the channel allocation of a plurality of learning algorithm acceleration modules and the connection work of the scheduling engine module.

The above embodiments are preferred embodiments of the present invention, and those skilled in the art can make variations and modifications to the above embodiments, therefore, the present invention is not limited to the above embodiments, and any obvious improvements, substitutions or modifications made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. The utility model provides a vehicle-mounted lighting intelligent control chip which characterized in that: the device comprises a DMA transmission unit, a reset unit, a 32-bit RISC-V processing unit, a JTAG debugging unit, a DDR storage unit, a power control management unit, a 9-axis acceleration detection unit, a bus communication unit, an AI auxiliary operation unit and a general peripheral unit;

2. The vehicle-mounted intelligent lighting control chip according to claim 1, wherein: the universal peripheral unit comprises an IO interface module, an SPI module, a serial port module and an I2C module.

3. The vehicle-mounted intelligent lighting control chip according to claim 1, wherein: the bus communication unit comprises a CAN protocol control module, a CAN fault detection module, a communication power consumption management module I, a CAN physical signal conversion module and a communication control module, wherein the communication power consumption management module I, the CAN physical signal conversion module and the CAN fault detection module are all connected with the CAN protocol control module, and the CAN protocol control module is connected with the communication control module.

4. The intelligent control chip for vehicle lighting according to claim 3, wherein: the bus communication unit also comprises an LIN protocol control module, a second communication power consumption management module, an LIN fault detection module and an LIN physical signal conversion module; and the second communication power consumption management module, the LIN fault detection module and the LIN physical signal conversion module are all connected with the LIN protocol control module, and the LIN protocol control module is also connected with the communication control module.

5. The intelligent control chip for vehicle lighting according to claim 3, wherein: the bus communication unit also comprises an Ethernet protocol layer control module, and the Ethernet protocol layer control module is also connected with the communication control module.

6. The vehicle-mounted intelligent lighting control chip according to claim 1, wherein: the power supply control management unit comprises a BOOST boosting module, a BUCK voltage reducing module, a multi-way switch module and a linear power supply output module;

7. The intelligent control chip for vehicle lighting according to claim 6, wherein: the power consumption management module is connected with the linear power output module, the BOOST module, the first communication power consumption management module and the second communication power consumption management module respectively.