CN221329177U

CN221329177U - New energy car light control system

Info

Publication number: CN221329177U
Application number: CN202421012529.0U
Authority: CN
Inventors: 陈肯; 刘东旭; 黄振鸣
Original assignee: Guangdong University of Technology
Current assignee: Guangdong University of Technology
Priority date: 2024-05-11
Filing date: 2024-05-11
Publication date: 2024-07-12
Anticipated expiration: 2034-05-11

Abstract

The utility model discloses a new energy vehicle lamp control system, which comprises an image acquisition module, a control module and a control module, wherein the image acquisition module is arranged at the front side of a new energy vehicle and is used for acquiring a vehicle front image; the first controller is connected to the image acquisition module and is used for receiving the front image of the car and processing and outputting a face recognition result; the second controller is connected to the first controller and is used for receiving the face recognition result sent by the first controller and generating a lamp control instruction; and the LED lamp matrix is connected to the second controller and is arranged on the new energy vehicle and used for executing the lamp control instruction when receiving the lamp control instruction. The utility model can improve the control efficiency and the accuracy by utilizing the dual-controller architecture, and can improve the control efficiency and the effect of the car lamp by means of the image data reference of the image acquisition module, thereby improving the control flexibility and reducing the accident occurrence.

Description

New energy car light control system

Technical Field

The utility model relates to the field of car lamp control, in particular to a new energy car lamp control system.

Background

In recent years, the production and maintenance of electric vehicles in China continuously rise, but the vehicle lamp control technology of the electric vehicles is still in a starting stage, and in most of related casualties of the electric vehicles, serious glare hazard caused by traditional electric vehicle headlamps with fixed illumination and poor brightness flexibility becomes a direct or indirect cause. The prior art does not consider the high efficiency characteristic of the dual controller structure for controlling the car lamp, most of the car lamps still adopt a single controller architecture, and the data reference of the image acquisition module is not fully considered, so that the control effect is poor, the flexibility is low, and the accident occurrence cannot be effectively reduced.

Disclosure of Invention

The utility model aims to solve the problems, and provides a new energy car lamp control system which can improve control efficiency and accuracy by using a dual-controller architecture and improve car lamp control efficiency and effect by means of image data reference of an image acquisition module, control flexibility is improved, and accidents are reduced.

In order to solve the technical problems, the utility model is implemented based on the following technical scheme:

A new energy vehicle lamp control system, comprising:

The image acquisition module is arranged at the front side of the new energy vehicle and is used for acquiring a front image;

the first controller is connected to the image acquisition module and is used for receiving the front image of the car and processing and outputting a face recognition result;

The second controller is connected to the first controller and is used for receiving the face recognition result sent by the first controller and generating a lamp control instruction;

and the LED lamp matrix is connected to the second controller and is arranged on the new energy vehicle and used for executing the lamp control instruction when receiving the lamp control instruction.

Further, the first controller is an STM32H750VBT6 chip.

Further, the second controller is an STM32F103C8T6 chip.

Further, the lamp control command output by the second controller is a PWM signal.

Further, the image acquisition module is an OV7725 CAMERACHIP ™ image sensor.

Further, the LED lamp matrix is three columns, and each column is composed of 6 LED lamps.

Compared with the prior art, the utility model has the beneficial effects that:

The utility model discloses a new energy car lamp control system, which can improve control efficiency and accuracy by using a dual-controller architecture and can improve car lamp control efficiency and effect by means of image data reference of an image acquisition module, control flexibility and reduce accidents.

Drawings

Fig. 1 is a schematic block diagram of a new energy vehicle lamp control system according to an embodiment of the present utility model;

FIG. 2 is a schematic circuit diagram of a first controller according to an embodiment of the present utility model;

FIG. 3 is a schematic circuit diagram of an image acquisition module according to an embodiment of the present utility model;

FIG. 4 is a schematic circuit diagram of a second controller according to an embodiment of the present utility model;

fig. 5 is a schematic circuit diagram of an LED lamp matrix according to an embodiment of the present utility model.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The utility model may be embodied in many other forms than described herein and similarly practiced by those skilled in the art without departing from the spirit or scope of the utility model, which is therefore not limited to the specific embodiments disclosed below.

The technical scheme of the present utility model is clearly and completely described below with reference to specific embodiments and drawings.

As shown in fig. 1, this embodiment discloses a new energy vehicle lamp control system, which includes an image acquisition module, a first controller, a second controller, and an LED lamp matrix. The image acquisition module is arranged on the front side of the new energy vehicle and used for acquiring a front image, the first controller connected to the image acquisition module is used for receiving the front image and processing and outputting a face recognition result, the second controller connected to the first controller is used for receiving the face recognition result sent by the first controller and generating a lamp control instruction, and the LED lamp matrix connected to the second controller is arranged on the new energy vehicle and is generally a front vehicle lamp and used for executing the lamp control instruction when receiving the lamp control instruction.

The new energy car lamp control system can improve control efficiency and accuracy by using the dual-controller framework, and can improve car lamp control efficiency and effect by means of image data reference of the image acquisition module, control flexibility is improved, and accidents are reduced.

Further, the first controller is an STM32H750VBT6 chip, the circuit structure of which can be seen in fig. 2, the H7 series is a high performance ARM microprocessor product line of ST, and STM32H750VBT6 is a very cost-effective product of the H7 product line. The embedded memory has all functions of H7 series, such as Cortex-M7 kernel, 400Mhz main frequency, 1MB distributed SRAM,16K instruction and data cache, 128KB zero waiting Flash and the like, and is very suitable for high-performance embedded application development. The chip has strong calculation power and performance, and can be used as a core operation device, optionally, a face recognition neural network model obtained through training can be deployed on the chip to operate, a DCMI interface of the chip is connected with and drives an image acquisition module to acquire a photo, an object image is searched in a real-time lens through the face recognition neural network model to be identified, and a face recognition result is transmitted to a second controller through a serial port.

Further, the image acquisition module is an OV7725 CAMERACHIP ™ image sensor, the circuit structure of which can be seen in fig. 3, which is a low-power-consumption voltage CMOS device, and the single-chip VGA camera and the image processor are packaged together. OV7725 provides a full frame, sub-sampled or windowed 8 bit/10 bit image series over a Serial Camera Control Bus (SCCB) interface. The device has an image array that can operate maximally to VGA of 60 frames per second (fps) with complete user control of image quality, format and output data transfer. All required image processing functions, including exposure control, gamma, white balance, color saturation, hue control, etc., can also be programmed through the SCCB interface. In addition, sensors have employed proprietary sensor technology to improve image quality by reducing or eliminating image contamination of common illumination/power sources, such as fixed patterns with noise, smudges, mottle, etc., to produce clean, full and stable color images.

Further, the second controller is an STM32F103C8T6 chip for controlling the LED matrix of the lamps, and the circuit structure thereof can be seen in fig. 4. The module communicates with the main board through USART1, wherein PA9 is taken as TX, PA10 is taken as RX, and the matrix array type LED is controlled after the signals of the main board are received. The PWM signals are output by using CH1 (PA 6), CH2 (PA 7) and CH3 (PB 0) of TIM3, so that the gradual change process of the brightness of the LED lamp is controlled.

Specifically, the Pulse Width Modulation (PWM) rationale is: the control mode is to control the on-off of the switching device of the inverter circuit, so that a series of pulses with equal amplitude are obtained at the output end, and the pulses are used for replacing sine waves or needed waveforms. That is, a plurality of pulses are generated in a half period of the output waveform, so that the equivalent voltage of each pulse is a sine waveform, and the obtained output is smooth and has few low harmonics. The width of each pulse is modulated according to a certain rule, so that the output voltage of the inverter circuit can be changed, and the output frequency can be changed. After receiving the instruction sent by the main board, the module changes the PWM duty ratio of the corresponding channel, so that the brightness of the LED at the corresponding position is changed.

Further, referring to fig. 4, the circuit structure of the LED lamp matrix may be designed into three columns, each column is composed of 6 LED lamps, the cathodes are grounded, the anodes are respectively connected to the PA6, PA7 and PB0 pins of the second controller, and the second controller outputs three PWM waves to regulate the brightness of each column of LEDs.

The present utility model is not limited to the preferred embodiments, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present utility model will still fall within the scope of the technical solution of the present utility model.

Claims

1. A new energy vehicle lamp control system, characterized by comprising:

2. The new energy vehicle lamp control system of claim 1, wherein the first controller is an STM32H750VBT6 chip.

3. The new energy vehicle lamp control system of claim 2, wherein the second controller is an STM32F103C8T6 chip.

4. The new energy vehicle lamp control system according to claim 3, wherein the lamp control command outputted from the second controller is a PWM signal.

5. The new energy vehicle lamp control system of claim 1, wherein the image acquisition module is an OV7725 CAMERACHIP ™ image sensor.

6. The new energy vehicle lamp control system according to claim 1, wherein the LED lamp matrix is of three columns, each column being composed of 6 LED lamps.