Intelligent passenger car networked headlamp control system and method

Abstract

This invention proposes a networked headlight control system and method for intelligent buses, relating to the field of bus headlight control. It includes a light intensity detection sensor for detecting light signals around the bus; a camera for acquiring driving route data around the bus; a Bluetooth module for connecting to a mobile terminal to acquire a driving map and sending the map to a control module; the control module receives current signals, driving route data around the bus, and the driving map, and based on these data, obtains actual road condition information for the bus and sends adjustment commands to the headlights; a networked headlight display module receives the adjustment commands and, based on these commands, adjusts the headlight's illumination angle, brightness, and beam splitting in real time. This invention improves the safety of intelligent buses driving at night, ensures the personal safety of the driver and passengers, and achieves intelligent control of networked headlights.

Description

Technical Field

[0001] This invention belongs to the field of bus headlight control technology, and particularly relates to an intelligent bus networked headlight control system and method. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] With my country's rapid economic development and continuous technological innovation, national and local governments are paying increasing attention to intelligent buses. As an essential mode of transportation for most people, the safety of buses is paramount. Headlights, acting as the "eyes" of the bus, play a crucial role in daytime tunnel driving, driving in adverse weather conditions (heavy rain, heavy snow, smog), nighttime driving, and passing other vehicles at night. With the rapid development of the tourism industry and the country's emphasis on energy conservation and emission reduction, intelligent buses not only help solve transportation problems but also reduce greenhouse gas emissions, playing an increasingly important role in society. Research data shows that the incidence of traffic accidents at night and in adverse weather conditions reaches as high as 27%. Due to poor driving conditions, insufficient lighting, and blind spots, bus drivers are unable to react promptly to emergencies, leading to accidents that endanger passenger safety and cause significant inconvenience.

[0004] Currently, most bus lights are manually adjusted by the driver to achieve basic functions such as low beam, high beam, and fog lights. This manual adjustment method cannot guarantee that the driver can react quickly and correctly in emergencies, which undoubtedly poses a significant threat to personal safety and property. Furthermore, the frequent operation by the driver increases their workload, distracts their attention, and greatly increases the risk. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, this invention provides a networked headlight control system and method for intelligent buses, breaking through the constraints of traditional bus headlights such as obstructed vision, blind spots, and split lights. It reduces the complexity of the control system and the wiring harness, improves the safety of intelligent buses driving at night, protects the personal safety of the driver and passengers, and realizes intelligent control of networked headlights.

[0006] To achieve the above objectives, one or more embodiments of the present invention provide the following technical solutions:

[0007] The first aspect of this invention provides a networked headlight control system for intelligent buses.

[0008] A networked headlight control system for intelligent buses includes:

[0009] A light intensity detection sensor is used to detect light signals around the bus and convert the light signals into current signals to be sent to the control module.

[0010] The camera is used to acquire driving route data around the bus and send the driving route data around the bus to the control module;

[0011] The Bluetooth module is used to connect to the mobile terminal, obtain the driving map, and send the driving map to the control module;

[0012] The control module receives current signals from the light intensity detection sensor, driving route data around the bus from the camera, and driving map from the Bluetooth module. Based on the current signals, driving route data around the bus, and driving map, it obtains the actual road condition information of the bus, judges the actual road condition information of the bus, and sends adjustment commands to the headlights based on the judgment results.

[0013] The networked headlight display module receives adjustment commands and, based on these commands, adjusts the headlight's beam angle, brightness, and beam splitting in real time.

[0014] A second aspect of the present invention provides a method for controlling networked headlights on intelligent buses.

[0015] A method for controlling networked headlights on an intelligent bus includes the following steps:

[0016] The control module performs program initialization;

[0017] After the program initializes normally, the control module first checks whether the Bluetooth connection is successful. If the connection fails, it reconnects. If the connection is successful, it reads the driving map information from the mobile terminal.

[0018] The control module acquires the current signal sent by the light intensity detection sensor to obtain the lighting conditions around the bus, and at the same time acquires the driving route data around the bus sent by the camera;

[0019] The control module obtains the actual road condition information of the bus based on the current signal, the driving route data around the bus and the driving map. It judges the actual road condition information of the bus. When the road condition is poor, it adjusts the illumination angle, brightness and splitting of the headlights in real time and sends the illumination angle adjustment command, brightness and splitting command to the networked headlight display module.

[0020] The networked headlight display module receives illumination angle adjustment commands, light brightness and light split adjustment commands sent by the control module, and adjusts the illumination angle, light brightness and light split of the headlights.

[0021] The above one or more technical solutions have the following beneficial effects:

[0022] 1. This invention proposes a networked headlight control system and method for intelligent buses. The control module receives current signals from a light intensity detection sensor, driving route data around the bus from a camera, and a driving map from a Bluetooth module. It analyzes the received current signals through internal waveform conversion to determine the headlight illumination angle and sends an illumination angle adjustment command to the networked headlight display module, enabling different headlight angle changes of 30°, 45°, 90°, 120°, 135°, and 180°. It compares the driving route data around the bus with the driving map to determine the corresponding headlight brightness and beam splitting, and adjusts the brightness and beam splitting in real time. Two detection modules can differentiate and process different road condition information, preventing false detections and incorrect data collection from leading to erroneous judgments. This ensures the stable operation of the bus and the safety of the driver and passengers, meeting the requirements of networked headlights for intelligent buses and guaranteeing the personal safety of the driver and passengers.

[0023] 2. This invention innovatively solves the problems of glare, obstructed vision, and blind spots caused by nighttime turning, nighttime oncoming traffic, and inclement weather. It realizes intelligent control of networked vehicle lights, avoids traffic accidents caused by drivers' mistakes in the order of light operation, breaks through the constraints of traditional bus lights, and improves the stability of networked vehicle lights.

[0024] 3. This invention does not require the separate development of a control system for networked headlights in intelligent buses. It only requires the integration of an STM32F407 microcontroller into the existing vehicle controller. The headlight wiring is connected through this system, and the corresponding functions are designed and programmed through the software system, which reduces costs and improves the economic efficiency of the new innovation.

[0025] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0027] Figure 1 This is a flowchart of the method in the first embodiment.

[0028] Figure 2 This is a system structure diagram of the second embodiment. Detailed Implementation

[0029] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0030] It should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations of the present invention.

[0031] Where there is no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0032] Overall concept of the invention:

[0033] The purpose of this invention is to design an intelligent networked headlight control system for buses, addressing the shortcomings of existing bus headlights. This system uses an STM32F407 microcontroller as the main control chip, with a camera and a networked driving route as its core components. The camera, combined with the controller algorithm, enables the bus to automatically adjust and split its headlights based on the driving route. A mobile app allows control of the controller's route identification and judgment functions. The camera accurately assesses different routes and weather conditions, transmitting this information to the controller to achieve automatic headlight adjustment and splitting, ensuring safety during nighttime driving and in adverse weather conditions, thus overcoming the limitations of traditional bus headlights.

[0034] Example 1

[0035] This embodiment discloses a networked headlight control system for intelligent buses.

[0036] like Figure 1 As shown, a networked headlight control system for intelligent buses includes:

[0037] A light intensity detection sensor is used to detect light signals around the bus and convert the light signals into current signals to be sent to the control module.

[0038] The camera is used to acquire driving route data around the bus and send the driving route data around the bus to the control module;

[0039] The Bluetooth module is used to connect to the mobile terminal, obtain the driving map, and send the driving map to the control module;

[0040] The control module receives current signals from the light intensity detection sensor, driving route data around the bus from the camera, and driving map from the Bluetooth module. Based on the current signals, driving route data around the bus, and driving map, it obtains the actual road condition information of the bus, judges the actual road condition information of the bus, and sends adjustment commands to the headlights based on the judgment results.

[0041] The networked headlight display module receives adjustment commands and, based on these commands, adjusts the headlight's beam angle, brightness, and beam splitting in real time.

[0042] Furthermore, the control module is also used to receive current signals, analyze the received current signals through internal waveform conversion, determine the illumination angle of the headlights, and send illumination angle adjustment commands to the networked headlight display module to realize different angle changes of 30°, 45°, 90°, 120°, 135°, and 180°. The control module is also used to compare the driving route data around the bus with the driving map, determine the corresponding headlight brightness and light splitting, and send brightness and light splitting adjustment commands to the networked headlight display module to adjust the brightness and light splitting in real time.

[0043] Furthermore, the networked headlight display module is used to switch the light from a first brightness to a second brightness and from a second brightness to a third brightness, wherein the first brightness is higher than the second brightness, and the second brightness is higher than the third brightness; the first brightness is the brightness of the low beam headlight, the second brightness is the brightness of the high beam headlight, and the third brightness is the brightness of the fog light.

[0044] Furthermore, it also includes an OLED display screen, which is used to display the surrounding environment of the bus, the length and angle of the headlights, and the situation of pedestrians and passersby.

[0045] Furthermore, it also includes a servo adjustment module, which is connected to the control module, receives adjustment commands sent by the control module, and adjusts the headlights to different angles based on the adjustment commands sent by the control module.

[0046] The input end of the servo motor adjustment module is connected to the control module, and the output end is connected to the vehicle lights. According to the adjustment command sent by the control module, the servo motor can realize networked vehicle light adjustment at different angles of 30° / 45° / 90° / 120° / 135° / 180° by changing the angle.

[0047] Furthermore, it also includes a constant current source drive module, which is connected to the control module and is used to maintain the output current of the control module at a constant value, unaffected by the load and its environment.

[0048] Furthermore, it also includes a power supply module, which is used to provide stable power to the control module, and the power supply module uses an LTC3789 chip.

[0049] When powered, this system uses the LTC3789 chip, which is a step-down switching regulator controller. The output current feedback loop provides support for battery charging. Its advantage is that the output voltage can be higher than the input voltage, while simultaneously meeting the adjustment range of 4V to 38V for both input and output voltages. This ensures the stable operation of the main control chip and its control module, and will not cause circuit failures that affect the stable operation of the bus.

[0050] Furthermore, the control module uses an STM32F407 microcontroller. The STM32F407 microcontroller control module has signal processing capabilities, a main frequency of up to 168MHz, and 14 timers. It mainly processes the data transmitted back by the camera and its detection module internally to analyze and judge the road conditions.

[0051] In this invention, the light intensity detection sensor adopts the hotspot effect principle to convert the received light signal into a current signal; the camera is connected to the DCMI interface of the STM32F407 microcontroller, which can realize real-time synchronization of data and pixels.

[0052] Furthermore, the Bluetooth module HC-05 is used for serial communication. The Bluetooth module's serial port receive pin RXD is connected to the STM32F407 microcontroller's TXD pin, and the Bluetooth module's serial port transmit pin TXD is also connected to the STM32F407 microcontroller's RXD pin. The OLED display module's pins DO / DI / DC / RES are connected to the STM32F407 microcontroller's pins X16 / X18 / X35 / X36 via the SPI interface for data transmission.

[0053] The aforementioned headlight display module is divided into two groups: a networked headlight display module and an OLED display module. The networked headlight display module can achieve sequential control of headlight brightness adjustment under different environments. The main control chip receives signals from data collected by external sensors and cameras, converts them internally, and sends them to the headlight module to realize the transformation of different lights and light splitting effects under different environments, and adjusts the light angle according to the actual route information.

[0054] The vehicle headlight module can switch from a first brightness (low beam) to a second brightness (low beam), and from the second brightness (high beam) to a third brightness (fog light). The first brightness (low beam) is higher than the second brightness (high beam); the second brightness (high beam) is higher than the third brightness (fog light).

[0055] like Figure 1As shown, a networked headlight control system for intelligent buses includes a hardware structure comprising a power supply module, a light intensity detection sensor module, a camera acquisition module, a button module, a constant current source drive module, an OLED display module, a Bluetooth module, a servo steering module, and a networked headlight module. The light intensity detection and camera modules are responsible for collecting road condition information, while the STM32F407 main control chip is responsible for receiving, converting, and sending commands to the various modules. In this embodiment, the mobile terminal is a mobile phone, and the mobile app connects to the Bluetooth module to send networked map road condition information to the main control chip, facilitating the main control chip to perform headlight switching, headlight splitting, and headlight adjustment in response to different road conditions.

[0056] During driving, in situations involving nighttime oncoming traffic and turns, the light intensity detection sensor transmits the detected light signal to the microcontroller for current signal processing. The microcontroller then analyzes the received current signal through internal waveform conversion and transmits it to the networked headlights for automatic adjustment of the headlight angle, enabling angle changes of 30° / 45° / 90° / 120° / 135° / 180°. The camera collects pixel data of the driving route and sends it to the microcontroller's DCMI interface. The microcontroller analyzes the data and compares it with the driving map via serial communication, making timely judgments and sending corresponding instructions to the headlight module for appropriate headlight splitting and adjustment. The installation of these two detection modules allows for differentiation and processing based on different road conditions, preventing false detections and incorrect data collection that could lead to erroneous judgments, thus ensuring the stable operation of the bus and the safety of the driver and passengers.

[0057] Example 2

[0058] This embodiment discloses a method for controlling networked headlights on intelligent buses.

[0059] like Figure 2 As shown, a method for controlling networked headlights on an intelligent bus includes the following steps:

[0060] The control module performs program initialization;

[0061] After the program initializes normally, the control module first checks whether the Bluetooth connection is successful. If the connection fails, it reconnects. If the connection is successful, it reads the driving map information from the mobile terminal.

[0062] The control module acquires the current signal sent by the light intensity detection sensor to obtain the lighting conditions around the bus, and at the same time acquires the driving route data around the bus sent by the camera;

[0063] The control module obtains the actual road condition information of the bus based on the current signal, the driving route data around the bus and the driving map. It judges the actual road condition information of the bus. When the road condition is poor, it adjusts the illumination angle, brightness and splitting of the headlights in real time and sends the illumination angle adjustment command, brightness and splitting command to the networked headlight display module.

[0064] The networked headlight display module receives illumination angle adjustment commands, light brightness and light split adjustment commands sent by the control module, and adjusts the illumination angle, light brightness and light split of the headlights.

[0065] During control, programming is performed using Keil uVision5 and E4A software. The E4A program requests a key for the network map, thereby retrieving road condition information from the network map for processing. The processed road condition information is then sent to the main control chip via the Bluetooth module HC-05, using serial communication via RXD / TXD. When the main control chip is working, it first initializes the program. The initialization state is that Bluetooth is disconnected, the detection module is in high-level mode, and the voltage regulator module is in normal power-on state. If initialization is normal, it first checks if the Bluetooth connection is successful. If the connection fails, it returns to reconnect. If the connection is successful, the system can read the network map information after communication processing and analyze the road condition information. If the road conditions are normal, the headlights do not need to execute corresponding commands. If the road conditions are poor, the system controls the networked headlights through internal and external detection information. The headlights are controlled by mechanical universal joints or servos and electrical circuits to adjust the light angle, light intensity, and light splitting.

[0066] When the display is active, the driver can also closely observe the distant range using the OLED display screen. The OLED display module pins DO / DI / DC / RES are connected to the main control chip pins X16 / X18 / X35 / X36 via the SPI interface for data transmission, which is convenient and fast, better ensuring the driver can observe blind spot road conditions and reducing the occurrence of traffic accidents.

[0067] like Figure 2As shown, a networked headlight control system for intelligent buses has the following software components: First, the main program initializes, checking if the Bluetooth module has successfully paired. If successful, it reads network map traffic information; if pairing fails, it returns to the start program for further initialization. After reading the network map information, the main control chip communicates with a mobile app via serial communication. This allows for the identification of traffic information data over the network, enabling the networked headlights to adjust accordingly. Simultaneously, an OLED display screen provides a video interface showing the road conditions ahead. Meanwhile, external sensors and camera modules can transmit feedback to the main control chip via the traffic information interface and distance data to determine road condition quality. This, along with the communication module, enables simultaneous identification and judgment, ensuring the accuracy of traffic information and preventing misidentification that could lead to inconsistent headlight adjustments.

[0068] Those skilled in the art will understand that the modules or steps of the present invention described above can be implemented using general-purpose computer devices. Optionally, they can be implemented using computer-executable program code, thereby allowing them to be stored in a storage device for execution by a computer device, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. The present invention is not limited to any particular combination of hardware and software.

[0069] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. An intelligent bus networked headlamp control system, characterized by, include: A light intensity detection sensor is used to detect light signals around the bus and convert the light signals into current signals to be sent to the control module. The camera is used to acquire driving route data around the bus and send the driving route data around the bus to the control module; the Bluetooth module is used to connect to the mobile terminal, acquire the driving map, and send the driving map to the control module. The control module receives current signals from the light intensity detection sensor, driving route data around the bus from the camera, and driving map from the Bluetooth module. Based on the current signals, driving route data around the bus, and driving map, it obtains the actual road condition information of the bus, judges the actual road condition information of the bus, and sends adjustment commands to the headlights based on the judgment results. The networked headlight display module is used to receive adjustment commands and, based on these commands, adjust the headlight's beam angle, brightness, and beam splitting in real time. The control module is also used to compare the driving route data around the bus with the driving map, determine the corresponding headlight brightness and light splitting, and send the headlight brightness and light splitting adjustment commands to the networked headlight display module to adjust the headlight brightness and light splitting in real time; the control module is also used to receive current signals, analyze the received current signals through internal waveform conversion, determine the headlight illumination angle, and send the illumination angle adjustment command to the networked headlight display module to realize different angle changes of 30°, 45°, 90°, 120°, 135°, and 180°. The camera collects pixels and data of the driving route and sends them to the DCMI interface of the microcontroller. The microcontroller analyzes the data and image and compares it with the driving map through serial communication. It makes timely judgments and sends corresponding instructions to the headlight module to split the headlights and adjust the lighting accordingly. The installation of the two detection modules can distinguish and process different road conditions to prevent false detections and incorrect data collection that could lead to incorrect judgments. This ensures the stable operation of the bus and the safety of the driver and passengers. External sensors and their camera modules can identify road conditions and distances to the main control chip, which then determines whether the road conditions are good or bad. Together with the communication module, they can perform the same function, ensuring the accuracy of road condition information and preventing misidentification that could lead to incorrect adjustments to the headlight module. The networked headlight display module is used to switch the light from a first brightness to a second brightness and from a second brightness to a third brightness, wherein the first brightness is higher than the second brightness and the second brightness is higher than the third brightness; The first brightness is the brightness of the low beam headlights, the second brightness is the brightness of the high beam headlights, and the third brightness is the brightness of the fog lights.

2. The intelligent passenger car networked headlamp control system of claim 1, wherein, It also includes an OLED display screen, which is used to display the surrounding environment of the bus, the length and angle of the headlights, and the situation of pedestrians and passersby.

3. The intelligent bus networked headlamp control system of claim 1, wherein, It also includes a servo adjustment module, which is connected to the control module, receives adjustment commands sent by the control module, and adjusts the headlights to different angles based on the adjustment commands sent by the control module.

4. The intelligent passenger car networked headlamp control system of claim 1, wherein, It also includes a constant current source drive module, which is connected to the control module and is used to keep the output current of the control module constant, unaffected by the load and its environment.

5. The intelligent bus networked headlamp control system of claim 1, wherein, It also includes a power supply module, which provides stable power to the control module, and the power supply module uses an LTC3789 chip.

6. The intelligent passenger car networked headlamp control system of claim 1, wherein, The control module uses an STM32F407 microcontroller.

7. The intelligent passenger car networked headlamp control system of claim 6, wherein, The Bluetooth module is used for serial communication. The Bluetooth module's serial port receive pin RXD is connected to the STM32F407 microcontroller's TXD pin, and the Bluetooth module's serial port transmit pin TXD is connected to the STM32F407 microcontroller's RXD pin. The OLED display module's pins DO / DI / DC / RES are connected to the STM32F407 microcontroller's pins X16 / X18 / X35 / X36 via the SPI interface for data transmission.

8. A method for controlling the networked headlamps of a smart bus, using the smart bus networked headlamp control system according to any one of claims 1-7, characterized in that: Includes the following steps: The control module performs program initialization; After the program initializes normally, the control module first checks whether the Bluetooth connection is successful. If the connection fails, it reconnects. If the connection is successful, it reads the driving map information from the mobile terminal. The control module acquires the current signal sent by the light intensity detection sensor to obtain the lighting conditions around the bus, and at the same time acquires the driving route data around the bus sent by the camera; The control module obtains the actual road condition information of the bus based on the current signal, the driving route data around the bus and the driving map. It judges the actual road condition information of the bus. When the road condition is poor, it adjusts the illumination angle, brightness and splitting of the headlights in real time and sends the illumination angle adjustment command, brightness and splitting command to the networked headlight display module. The networked headlight display module receives illumination angle adjustment commands, light brightness and light split adjustment commands sent by the control module, and adjusts the illumination angle, light brightness and light split of the headlights.

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