Overtaking safety early warning device and early warning method

Abstract

The invention relates to an overtaking safety early warning device and method, and relates to the technical field of vehicle auxiliary driving, the early warning device is arranged on a rearview mirror on the left side of a vehicle and used for assisting a driver in judging overtaking safety on a two-way lane without a segmented guardrail in the middle of a road, and the early warning device comprises a camera module, a camera module and an early warning module, the image acquisition module is used for acquiring real-time image data of left front and opposite lanes of a vehicle; the image processing module is connected with the camera module and is used for analyzing the real-time image data so as to identify information of vehicles coming from the opposite lane; the risk assessment module is connected with the image processing module and judges whether an overtaking risk exists or not based on the data received from the image processing module; and the early warning module is connected with the risk assessment module and is used for sending out an acousto-optic prompt signal to remind a driver to stop overtaking when the overtaking risk is detected. Through real-time monitoring and intelligent early warning, the traffic accident risk caused by overtaking can be effectively reduced, and the safety awareness of a driver is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle assisted driving, and in particular to a method, device and system for detecting whether there is an oncoming vehicle when a vehicle is overtaking in a two-way lane. Background Art

[0002] On a two-way lane, due to the lack of isolation guardrails in the middle, vehicles need to accurately judge whether there is an oncoming vehicle in the opposite lane when overtaking. This driving scenario is highly risky, especially in areas with relatively weak infrastructure such as mountainous roads and rural roads. However, in the current driving environment, drivers mainly rely on visual judgment of oncoming vehicles. This judgment method has obvious defects: on the one hand, it is easily affected by blind spots, especially in special sections such as bends and ramps, where the line of sight is severely obstructed; on the other hand, traffic accidents may occur due to misjudgment, and the risk of misjudgment increases significantly. At the same time, the application of existing vehicle assistance systems in overtaking scenarios has obvious limitations. At present, some vehicle assistance systems on the market do not support special scenarios such as overtaking, which requires accurate judgment of oncoming traffic. Specifically, the system cannot accurately detect the specific position of the oncoming vehicle, making it difficult to guarantee the reliability of the safety warning function.

[0003] In view of these problems, it is particularly necessary to develop an overtaking safety warning device based on machine vision detection technology. Summary of the invention

[0004] The present invention relates to an overtaking safety warning device, in particular to a warning device used on a two-way lane without a dividing guardrail in the middle of a road. The device is intended to improve overtaking safety and reduce the occurrence of traffic accidents.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the present invention provides an overtaking safety warning device, which is arranged on the left rearview mirror of the vehicle and is used to assist the driver in judging the safety of overtaking on a two-way lane without a dividing guardrail in the middle of the road. The warning device includes:

[0006] The camera module is used to collect real-time image data of the left front of the vehicle and the oncoming lane;

[0007] An image processing module, connected to the camera module, for analyzing real-time image data to identify information of oncoming vehicles in the opposite lane;

[0008] a risk assessment module, connected to the image processing module, and determining whether there is an overtaking risk based on data received from the image processing module;

[0009] The early warning module is connected to the risk assessment module and is used to send out sound and light warning signals when overtaking risk is detected to remind the driver to stop overtaking.

[0010] Preferably, the camera module is a high-definition camera with night vision function, which can achieve stable data collection in low light or night conditions.

[0011] Preferably, the prompt signal of the early warning module includes an audio prompt emitted by the in-vehicle speaker and a flashing light signal in the rearview mirror area; the sound prompt signal of the early warning module includes multi-frequency tones to distinguish different risk levels; the light prompt signal of the early warning module includes a multi-color indicator light in the rearview mirror area, and its color range includes green, yellow and red.

[0012] Preferably, the data sent by the image processing module to the risk assessment module includes the relative position, relative speed and preset safety threshold of the oncoming vehicle; the image processing module adopts an image recognition algorithm based on deep learning to accurately identify the type, speed and driving trajectory of the oncoming vehicle.

[0013] Preferably, the risk assessment module can dynamically adjust the safety threshold according to road curvature, driving speed and weather conditions.

[0014] Preferably, the warning device further comprises a wireless communication module for interacting with other vehicles or road infrastructure to enhance the accuracy of overtaking risk assessment.

[0015] The technical solution of the present invention also provides an overtaking safety warning method, which uses the above-mentioned overtaking safety warning device and includes the following steps:

[0016] Image acquisition: The camera module is used to collect real-time image data of the left front of the vehicle and the oncoming lane;

[0017] Image processing: Processing real-time image data to identify oncoming vehicles in the opposite lane and related information;

[0018] Risk assessment: Determine whether there is an overtaking risk based on the relative position, relative speed and preset safety threshold of the identified oncoming vehicle;

[0019] Issue a warning: When there is a risk of overtaking, an audible and visual warning signal is issued to the driver to remind him to avoid overtaking.

[0020] Preferably, the image processing step includes denoising, edge detection and oncoming vehicle feature extraction to improve recognition accuracy.

[0021] Preferably, the risk assessment step is based on a fusion perception model, combining the vehicle's own speed sensor data with the data collected by the camera module to comprehensively judge the overtaking risk.

[0022] Preferably, the intensity of the prompt signal in the early warning step can be dynamically adjusted according to the risk level, including volume, light prompt frequency and color change.

[0023] Compared with the prior art, the advantages of the present invention are: through real-time monitoring and intelligent early warning, it can effectively reduce the risk of traffic accidents caused by overtaking and improve the safety awareness of drivers. The device adopts advanced image recognition technology and can work stably under various environmental conditions to ensure that the driver obtains accurate information before overtaking. In addition, the design of the present invention takes into account the actual needs of the driver to ensure efficient safety monitoring without affecting the driver's field of vision. Through this innovative technology, the driver can get timely safety tips when overtaking, so as to make safer driving decisions and significantly improve driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The present invention is a schematic diagram of the installation structure of an overtaking safety warning device and a warning method.

[0025] Figure 2 The present invention is a system block diagram of an overtaking safety warning device and a warning method.

[0026] Figure numerals: 1. device fixing buckle; 2. early warning device; 3. camera module; 4. image processing module; 5. risk assessment module; 6. early warning module. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The embodiment of the present invention discloses an overtaking safety warning device, which is mainly used to assist the driver in judging the safety of overtaking on a two-way lane without a dividing guardrail in the middle of the road. The warning device 2 can be installed on the left rearview mirror of the vehicle through a device fixing buckle 1. The warning device 2 includes a camera module 3, an image processing module 4, a risk assessment module 5, a warning module 6 and a wireless communication module, and each module works together to ensure driving safety.

[0030] The camera module 3 is installed on the left rearview mirror of the vehicle, and can capture the image information of the road ahead in real time, and is specifically used to collect real-time image data of the left front of the vehicle and the opposite lane. The camera module 3 is a high-definition camera with night vision function, which can achieve stable data collection in low light or night conditions.

[0031] The image processing module 4 is connected to the camera module 3 and uses advanced image recognition technology to analyze the real-time image data obtained by the camera module 3 to identify the information of the oncoming vehicle in the opposite lane and determine whether there is an oncoming vehicle in front. The image processing module 4 uses an image recognition algorithm based on deep learning, which can accurately identify the type, speed and driving trajectory of the oncoming vehicle, efficiently identify the existence and speed of the vehicle in front, and compare it with the driving speed of the current vehicle. When an oncoming vehicle is detected, the image processing module 4 will trigger the risk assessment module 5.

[0032] The risk assessment module 5 is connected to the image processing module 4, and determines whether there is an overtaking risk based on the relative position, relative speed and preset safety threshold of the oncoming vehicle. The risk assessment module 5 can dynamically adjust the safety threshold according to the road curvature, driving speed and weather conditions to more accurately assess the overtaking risk.

[0033] The early warning module 6 is connected to the risk assessment module 5, and is used to send out an audio and light prompt signal when the risk of overtaking is detected, reminding the driver to stop overtaking. Among them, the prompt signal of the early warning module 6 includes an audio prompt emitted by the speaker in the car and a flashing light signal in the rearview mirror area. The sound prompt signal of the early warning module 6 includes multi-frequency tones to distinguish different risk levels. The light prompt signal of the early warning module 6 includes a multi-color indicator light in the rearview mirror area, and its color range includes green (safety), yellow (warning) and red (high risk). The early warning module 6 warns the driver through various methods such as sound, light or vibration, reminding him to make sure that the road ahead is safe before overtaking, thereby effectively avoiding traffic accidents caused by blind overtaking.

[0034] In addition, the device also includes a wireless communication module for interacting with other vehicles or road infrastructure to obtain more relevant information, thereby enhancing the accuracy of overtaking risk assessment.

[0035] When a vehicle intends to overtake, the overtaking safety warning device of the present invention will monitor the road conditions ahead in real time with the help of the camera module 3 to check whether there is a vehicle coming from the opposite lane. Once an oncoming vehicle is detected, the warning module 6 will immediately start and send a warning signal to the driver to remind him that there is an oncoming vehicle ahead and advise him not to overtake to ensure driving safety.

[0036] The embodiment of the present invention also discloses a method for overtaking safety warning, which is applicable to a two-way lane without a dividing guardrail in the middle of the road, and includes the following steps:

[0037] S1, image acquisition: collect real-time image data of the left front and opposite lanes of the vehicle through the camera module 3 installed on the left rearview mirror of the vehicle;

[0038] S2, image processing: denoising, edge detection and oncoming vehicle feature extraction of real-time image data to improve recognition accuracy and identify oncoming vehicles in the oncoming lane and related information;

[0039] S3, risk assessment: based on the relative position, relative speed and preset safety threshold of the identified oncoming vehicle, determine whether there is an overtaking risk. Based on the fusion perception model, the vehicle's own speed sensor data and the data collected by the camera module are combined to comprehensively determine the overtaking risk;

[0040] S4. Issue a warning: When there is a risk of overtaking, an audible and visual warning signal is issued to the driver to remind him to avoid overtaking. The warning signal strength can be dynamically adjusted according to the risk level, including volume, light warning frequency and color change.

[0041] The image processing step includes the processes of denoising, edge detection and oncoming vehicle feature extraction to improve recognition accuracy.

[0042] The risk assessment step is based on a fusion perception model, combining the vehicle's own speed sensor data with the data collected by the camera module to comprehensively judge the overtaking risk.

[0043] The intensity of the prompt signal in the step of issuing the early warning can be dynamically adjusted according to the risk level, including volume, light prompt frequency and color change.

[0044] The overtaking safety warning device of the present invention is intended to improve the safety of overtaking on a two-way lane, especially when there is no dividing guardrail in the middle of the road. The warning device 2 helps the driver make safer decisions when performing overtaking operations by monitoring the traffic conditions ahead in real time, thereby effectively reducing the risk of traffic accidents caused by overtaking. The core components of the warning device 2 include a camera module 3, an image processing module 4, a risk assessment module 5 and a warning module 6. The present invention specifically elaborates on the above content as follows:

[0045] First, in the overtaking safety warning device of the present invention, the installation position of the camera module 3 is extremely critical. The module is installed on the left rearview mirror of the vehicle. This position can capture the real-time image information of the left front and the opposite lane of the vehicle to the greatest extent, thereby ensuring that the warning device 2 can fully monitor the traffic conditions ahead. The camera module 3 is equipped with a high-resolution image sensor, which can work stably under various lighting conditions to ensure the accuracy of information collection. The warning device 2 obtains the dynamic information of the road ahead in a timely manner by collecting image data in real time, providing a basis for subsequent processing.

[0046] In the image processing stage, the image processing module 4 performs denoising, edge detection and oncoming vehicle feature extraction on the real-time image data obtained by the camera module 3 to improve the recognition accuracy. Denoising can eliminate image interference information, making subsequent edge detection and feature extraction more accurate. Edge detection, as a key step in image processing, can effectively identify the contours of objects in the image and lay the foundation for feature extraction. In the feature extraction process, the image processing module 4 uses advanced image recognition technology to identify the shape, size and motion state of the vehicle in front, efficiently judge the existence and speed of the vehicle in front, and compare it with the current vehicle speed.

[0047] After completing the image processing, the early warning device 2 enters the risk assessment stage. The image processing module 4 determines whether there is an overtaking risk based on the relative position, relative speed and preset safety threshold of the identified oncoming vehicle. Specifically, the risk assessment module 5 of the early warning device 2 will analyze the distance and speed difference between the oncoming vehicle and the current vehicle, and evaluate the collision risk in combination with the vehicle's driving speed. By integrating the perception model, the risk assessment module 5 combines the vehicle's own speed sensor data with the data collected by the camera module to make a comprehensive judgment. If it is detected that the speed of the oncoming vehicle exceeds the preset safety threshold and the distance from the current vehicle is within the danger range, the early warning device 2 will determine that there is an overtaking risk.

[0048] Once the risk of overtaking is determined, the risk assessment module 5 triggers the warning module 6 to send an audible and visual warning signal to the driver. The warning module 6 is designed with a variety of warning methods, such as sound and light, to ensure that the driver receives the warning information in time. The strength of the warning signal can be dynamically adjusted according to the risk level. When the risk level is high, the warning module 6 will increase the volume, increase the frequency of the light prompt or change the color of the light prompt to enhance the warning effect. This dynamic adjustment mechanism ensures that the driver confirms the safety of the road ahead before overtaking according to different driving conditions.

[0049] The overtaking safety warning device of the present invention has significant advantages in practical applications. First, through real-time monitoring and intelligent warning, the warning device 2 effectively reduces the risk of traffic accidents caused by overtaking and enhances the driver's safety awareness. The design of the warning device 2 fully considers the actual needs of the driver and achieves efficient and safe monitoring without affecting the field of vision. Secondly, the use of advanced image recognition technology enables the warning device 2 to work stably under various environmental conditions, ensuring that the driver obtains accurate information before overtaking. In addition, the warning device 2 is easy to install and use, and can be combined with the existing vehicle rearview mirror structure to reduce the impact on the vehicle's appearance and function.

[0050] During the implementation process, the performance and stability of the early warning device 2 have been fully verified. A large number of field tests have shown that the early warning device 2 can work efficiently in different weather conditions, lighting changes and road conditions. The test results show that the early warning device 2 has achieved the expected goals in terms of accuracy and reaction speed in identifying oncoming vehicles, and can issue early warnings to drivers in a timely manner, reducing the incidence of overtaking accidents.

[0051] The present invention discloses an overtaking safety warning device designed for a two-way lane without a dividing guardrail in the middle of the road, which aims to solve the potential safety hazard problem in the overtaking process. The device is composed of a camera module 3, an image processing module 4, a risk assessment module 5 and a warning module 6, wherein the camera module 3 is installed on the left rearview mirror of the vehicle and is responsible for collecting image data of the road ahead. The image processing module 4 uses an image algorithm to extract the road centerline information and detects the position, speed and motion trajectory of the oncoming vehicle. The risk assessment module 5 evaluates the overtaking risk in real time based on the relative position of the vehicle and the dynamic threshold algorithm. Once the risk is identified, the warning module 6 issues a warning to the driver in the form of an acoustic and optical signal to remind him to avoid dangerous overtaking operations. With the help of visual detection technology, the present invention can effectively reduce traffic accidents caused by driver misjudgment or limited field of vision, has the advantages of high detection accuracy, fast response and convenient installation, and is suitable for all types of motor vehicles.

[0052] The overtaking safety warning device of the present invention can effectively improve the safety of overtaking and reduce the occurrence of traffic accidents through real-time monitoring and intelligent warning. It not only enhances the safety awareness of drivers, but also relies on advanced technical means to ensure stable operation in various complex driving environments. With the help of this innovative technology, drivers can obtain timely safety tips when overtaking, so as to make safer driving decisions and significantly improve driving safety. Looking to the future, with the continuous advancement of technology and the continuous expansion of application scenarios, the overtaking safety warning device of the present invention is expected to be applied in a wider range of fields, providing safety protection for more drivers.

Claims

1. An overtaking safety warning device, characterized in that: The early warning device (2) is arranged on the left rearview mirror of the vehicle and is used to assist the driver in judging the safety of overtaking on a two-way lane without a dividing guardrail in the middle of the road. The early warning device (2) comprises: The camera module (3) is used to collect real-time image data of the left front of the vehicle and the oncoming lane; An image processing module (4) connected to the camera module (3) and used for analyzing real-time image data to identify information of oncoming vehicles in the opposite lane; A risk assessment module (5) is connected to the image processing module (4) and determines whether there is an overtaking risk based on the data received from the image processing module (4); The early warning module (6) is connected to the risk assessment module (5) and is used to send out an audible and visual warning signal when an overtaking risk is detected, so as to remind the driver to stop overtaking.

2. The overtaking safety warning device according to claim 1, characterized in that: The camera module (3) is a high-definition camera with a night vision function, which can realize stable data collection under low-light or nighttime conditions.

3. The overtaking safety warning device according to claim 1, characterized in that: The warning signal of the early warning module (6) includes an audio prompt emitted by a loudspeaker in the vehicle and a flashing light signal in the rearview mirror area; the sound prompt signal of the early warning module (6) includes multi-frequency tones for distinguishing different risk levels; the light prompt signal of the early warning module (6) includes a multi-color indicator light in the rearview mirror area, and its color range includes green, yellow and red.

4. The overtaking safety warning device according to claim 1, characterized in that: The data sent by the image processing module (4) to the risk assessment module (5) include the relative position, relative speed and preset safety threshold of the oncoming vehicle; the image processing module (4) uses an image recognition algorithm based on deep learning to accurately identify the type, speed and driving trajectory of the oncoming vehicle.

5. The overtaking safety warning device according to claim 1, characterized in that: The risk assessment module (5) can dynamically adjust the safety threshold according to the road curvature, driving speed and weather conditions.

6. The overtaking safety warning device according to claim 1, characterized in that: The warning device (2) also includes a wireless communication module for interacting with other vehicles or road infrastructure to enhance the accuracy of overtaking risk assessment.

7. A method for overtaking safety warning, characterized in that: The overtaking safety warning device according to any one of claims 1 to 6 comprises the following steps: Image acquisition: real-time image data of the left front of the vehicle and the oncoming lane are collected by the camera module (3); Image processing: Processing real-time image data to identify oncoming vehicles in the opposite lane and related information; Risk assessment: Determine whether there is an overtaking risk based on the relative position, relative speed and preset safety threshold of the identified oncoming vehicle; Issue a warning: When there is a risk of overtaking, an audible and visual warning signal is issued to the driver to remind him to avoid overtaking.

8. The overtaking safety warning method according to claim 7, characterized in that: The image processing steps include denoising, edge detection and oncoming vehicle feature extraction to improve recognition accuracy.

9. The overtaking safety warning method according to claim 7, characterized in that: The risk assessment step is based on a fusion perception model that combines the vehicle's own speed sensor data with the data collected by the camera module to comprehensively judge the overtaking risk.

10. The overtaking safety warning method according to claim 7, characterized in that: The intensity of the prompt signal in the early warning step can be dynamically adjusted according to the risk level, including volume, light prompt frequency and color changes.

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