CN216268982U

CN216268982U - Monitoring system for eliminating right turning blind area of truck in all weather

Info

Publication number: CN216268982U
Application number: CN202123014232.7U
Authority: CN
Inventors: 王清洲; 王瑜; 张贺; 赵雅璇; 李露佳; 王嘉诚
Original assignee: Hebei University of Technology
Current assignee: Hebei University of Technology
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-04-12
Anticipated expiration: 2031-12-03

Abstract

The utility model discloses a monitoring system for eliminating right turning blind areas of a truck in all weather, which comprises a fisheye camera, an ECU, a center console display screen, a vehicle CAN network and a voice warning device, wherein the fisheye camera is connected with the ECU through a network; the four fisheye cameras are respectively arranged on a front bumper, a rear bumper, below a left side rearview mirror and below a right side rearview mirror of the truck; the center console display screen and the voice warning device are both arranged in a cab of the truck; the fisheye camera, the center console display screen and the voice warning device are all in communication connection with the ECU through a vehicle CAN network. The utility model has simple connection of all components, realizes the best imaging effect of covering the blind area monitoring range comprehensively, imaging visually and simply, avoiding distraction of a driver and all weather, simultaneously further ensures the driving safety by the voice warning device, provides sufficient safety guarantee for the driving behavior of a truck driver and can be widely applied to the field of automobile safety prevention and control.

Description

Monitoring system for eliminating right turning blind area of truck in all weather

Technical Field

The utility model relates to the field of vehicle safety prevention and control, in particular to a monitoring system for eliminating a right turning blind area of a truck in all weather.

Background

The dead zones such as the difference of the inner wheels and rearview mirrors and the like can occur in the turning process of the truck, particularly, the hinged semitrailer can generate larger dead zones compared with other vehicles in the driving process due to the height, the volume and the axle distance of the truck, wherein the dead zone for turning right is the most dangerous one of all the dead zones of the truck, and the high accident rate and the high fatality rate are called as 'people-eating right turning'. The right turning blind area comprises a hinged type truck right turning inner wheel difference blind area and a truck right turning rearview mirror blind area. The dead zone of the difference of the right turning inner wheel of the articulated truck refers to an area surrounded by the tracks of the front wheel and the rear wheel because the rear wheel can not follow the track of the front wheel in the process of turning the right of the articulated truck, and the track of the front wheel and the track of the rear wheel are not in an arc line. The dead zone of the right-turning rearview mirror of the truck is the normal driving position when a driver is positioned, and the sight line of the dead zone is limited by the structure of the truck body and passes through the three-dimensional range area of the two sides of the truck body which can not be seen by the rearview mirror.

The panoramic all-around vision system for eliminating the vehicle driving blind area is gradually applied and popularized on the saloon cars, but for large trucks with serious blind areas, the panoramic all-around vision monitoring system is very few in application. At present, most of existing truck blind area monitoring devices rely on a plurality of rear-view auxiliary mirrors with different angles and curvatures to be installed, or a plurality of cameras are adopted to collect images for multi-screen display, so that the attention of a driver is easily dispersed, the driving burden is increased, new potential safety hazards are brought, and more importantly, the device is difficult to be suitable for eliminating the blind areas of vehicles turning at night. Therefore, the traditional dead zone monitoring device for the truck with single function and large limitation needs to be improved urgently.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to solve the technical problem of providing a monitoring system for eliminating the dead zone of right turning of a truck in all weather.

The utility model provides a monitoring system for eliminating right turning blind area of a truck in all weather, which is characterized by comprising a fisheye camera, an ECU, a center console display screen, a vehicle CAN network and a voice warning device;

the four fisheye cameras are respectively arranged on a front bumper, a rear bumper, below a left side rearview mirror and below a right side rearview mirror of the truck; the center console display screen and the voice warning device are both arranged in a cab of the truck; the fisheye camera, the center console display screen and the voice warning device are in communication connection with the ECU through a vehicle CAN network;

all-weather collecting images of the surrounding environment of the vehicle by each fisheye camera; the ECU generates a 3D environment image consisting of a bird's-eye view and a right view according to the images collected by the four fisheye cameras; the ECU controls a display screen of a center console to display a 3D ring scene image; the voice warning device is used for prompting a driver to observe a displayed 3D environment image on a display screen of the center console in a voice mode when the vehicle turns right.

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

(1) the utility model adopts four 180-degree fisheye cameras with an infrared night vision function to realize dead-angle-free acquisition of the surrounding environment of the vehicle, integrates the images acquired by the four fisheye cameras into a 3D (three-dimensional) panoramic image by the conventional image splicing algorithm, has comprehensive coverage of the dead zone monitoring range and intuitive and simple imaging, and avoids new potential safety hazards caused by the distraction of drivers due to split screen or multi-screen display images.

(2) The fisheye camera has a night vision function, solves the problems of daytime imaging color cast and insufficient night light of the traditional infrared camera, realizes an all-weather optimal imaging effect, truly eliminates right-turning driving blind areas of the truck in all weather, and furthest ensures the safety of drivers and pedestrians.

(3) The utility model is provided with the voice warning device, thereby reducing the potential safety hazard caused by neglecting images due to habituation or driving fatigue of a driver.

(4) The utility model has simple connection of all components, realizes the best imaging effect of covering the blind area monitoring range comprehensively, imaging visually and simply, avoiding distraction of a driver and all weather, simultaneously further ensures the driving safety by the voice warning device, provides sufficient safety guarantee for the driving behavior of a truck driver and can be widely applied to the field of automobile safety prevention and control.

Drawings

FIG. 1 is a block diagram of the system of the present invention;

FIG. 2 is a schematic view of the mounting of the fisheye camera of the utility model;

FIG. 3 is a front view of the internal structure of the fisheye camera of the utility model;

fig. 4 is an exploded view of the fisheye camera of the utility model.

In the figure, 1, a truck; 2. a fisheye camera; 3. an ECU; 4. a center console display screen; 5. a vehicle CAN network; 6. a voice warning device; 21. a protective cover; 22. a base; 23. a PCB board; 24. a signal receiver; 25. a fisheye camera; 26. an infrared LED lamp; 27. mounting a column; 28. the filter switcher.

Detailed Description

Specific examples of the present invention are given below. The specific examples are only intended to illustrate the utility model in further detail and do not limit the scope of protection of the claims of the present application.

The utility model provides a monitoring system (short for system) for eliminating a dead zone of right turning of a truck in all weather, which is characterized by comprising a fisheye camera 2, an ECU3, a center console display screen 4, a vehicle CAN network 5 and a voice warning device 6;

the four fisheye cameras 2 are respectively arranged on a front bumper (for shooting the front of the truck), a rear bumper (for shooting the rear of the truck), a lower part of a left side rearview mirror (for shooting the left side of the truck) and a lower part of a right side rearview mirror (for shooting the right side of the truck) of the truck 1; the center console display screen 4 and the voice warning device 6 are both arranged in the cab of the truck 1; the fisheye camera 2, the center console display screen 4 and the voice warning device 6 are in communication connection with the ECU3 through the vehicle CAN network 5;

each fisheye camera 2 acquires 180-degree field angle images of the surrounding environment of the vehicle all weather, and the coverage areas of the fields of view of the four fisheye cameras 2 are all overlapped; the ECU3 calculates the images acquired by the four fisheye cameras 2 through an image stitching algorithm to generate a 3D environment image consisting of a bird's-eye view and a right view; the ECU3 controls the display screen 4 of the center console to display a 3D ring scene image for the driver to view according to the running state of the vehicle; the voice warning device 6 is used for voice reminding the driver to observe the displayed 3D ring scene image on the center console display screen 4 when the vehicle turns right.

Preferably, the ECU3 includes a Microcontroller (MCU), a memory (ROM, RAM), an input/output interface (I/O), an analog-to-digital converter (a/D), and a large-scale integrated circuit for shaping, driving, etc.; the image stitching algorithm is the prior art, and the reference is Yi Gao, Chunyu Lin, Yao ZHao, et al.3-D Surround View for Advanced Driver Assistance Systems [ J ]. IEEE Transactions on Intelligent transformation Systems,2018,19(1). The image splicing algorithm comprises three steps of image preprocessing, image registration and image fusion; the image preprocessing adopts a fisheye lens calibration algorithm of collinear constraint and edge angular points; the image registration adopts the steps of establishing a 3D ship model and a virtual image plane, carrying out coordinate transformation by utilizing a perspective transformation matrix, and mapping pixels of a 2D texture plane to a 3D surface through 3D texture mapping; the image fusion adopts an alpha fusion technology.

Preferably, the vehicle CAN network 5 comprises a CAN controller and a CAN transceiver; the CAN controller receives the information transmitted by the microcontroller of the ECU3 and then transmits the information to the bus; the CAN transceiver switches the data stream from the CAN controller to the CAN bus layer.

Preferably, the fisheye camera 2 comprises a protective cover 21, a base 22, a PCB 23, a signal receiver 24, a fisheye camera 25, an infrared LED lamp 26, a mounting post 27 and a filter switcher 28;

the protective cover 21 is detachably and fixedly connected with the base 22 to form a shell of the fisheye camera 2; the other parts are all positioned in the shell; the PCB 23 is fixed on the base 22 through the mounting column 27, and the PCB 23 is fixed by the mounting column 27 and insulated from the base 22 at the same time; the PCB 23 is provided with a signal receiver 24, a fisheye camera 25, an infrared LED lamp 26, a filter switcher 28 and a power line; the signal receiver 24, the fisheye camera 25, the infrared LED lamp 26 and the optical filter switcher 28 are all in communication connection with the PCB 23; the PCB 23 is in communication connection with the ECU3 through the vehicle CAN network 5; the filter switcher 28 is disposed in the field of view of the fisheye camera 25, and is configured to switch the infrared cut filter or the full-transmittance spectral filter into the field of view of the fisheye camera 25.

Preferably, the filter switcher 28 includes a power device, a filter placement device, an infrared cut filter, and a full transmission spectrum filter; the output end of the power device is fixedly connected with the central axis of the optical filter placing device; an infrared cut-off filter and a full-transmission spectrum filter are respectively arranged on two sides of the filter placing device; the power device rotates to drive the optical filter placing device to rotate around the central axis of the optical filter placing device, so that the infrared cut-off optical filter or the full-transmission spectrum optical filter is positioned in the view field of the fisheye camera 25. The power device switches the full-transmission spectrum filter into the infrared cut-off filter in daytime, and the fisheye camera 25 receives infrared rays which cannot be identified by human eyes in daytime, so that the image and naked eyes are deviated, and the infrared cut-off filter is used for reducing the color. Power device switches into full transmission spectrum light filter with infrared cut-off filter when night, and night adopts full transmission spectrum light filter work because light is dim, and infrared LED lamp 26 is worked at night, sends the infrared light, and the object reflection is touched to the infrared light to fisheye camera 25 to realize the night vision, make fisheye camera 25 still can keep good camera effect under the low illumination condition at night, realize eliminating the freight train right turn blind area in all weather.

Preferably, the voice warning device 6 comprises a vibration reduction fastening plate, a mounting seat, a voice prompter and a turn light signal collector; one end of the vibration reduction fastening plate is fixed in a cab of the truck 1, the other end of the vibration reduction fastening plate is fixed with a mounting seat, a voice prompter is mounted on the mounting seat, and the vibration reduction fastening plate is used for attenuating vibration amplitude of a vehicle, so that vibration of the voice prompter for broadcasting prompt tones is reduced, and the broadcasting effect is better; the turn signal collector is arranged in a turn light of the vehicle and is in communication connection with the turn light; the voice prompter is in communication connection with the turn light signal collector; the steering lamp signal collector is used for collecting steering information of the vehicle steering lamp and then transmitting the information to the voice prompter; the voice prompter is used for broadcasting recorded prompt tones and prompting a driver to observe a 3D ring scene image displayed on the display screen 4 of the center console; when a driver turns a turn light, the turn light signal collector collects information and transmits the information to the voice prompter for voice prompt, so that the driver is reminded to observe a 3D environment image displayed on the display screen 4 of the center console, and traffic accidents caused by images formed by a system neglected due to habituation or driving fatigue when the driver drives a right turn are reduced.

Nothing in this specification is said to apply to the prior art.

Claims

1. A monitoring system for eliminating right turning blind area of a truck in all weather is characterized in that the system comprises a fisheye camera, an ECU, a center console display screen, a vehicle CAN network and a voice warning device;

2. The all-weather monitoring system for eliminating the dead zone of right turn of the truck as claimed in claim 1, wherein the fisheye camera comprises a protective cover, a base, a PCB board, a signal receiver, a fisheye camera, an infrared LED lamp, a mounting post and a filter switcher;

the protective cover is detachably and fixedly connected with the base to form a shell of the fisheye camera; the other parts are all positioned in the shell; the PCB is fixed on the base through the mounting column; the PCB is provided with a signal receiver, a fisheye camera, an infrared LED lamp, an optical filter switcher and a power line; the signal receiver, the fisheye camera, the infrared LED lamp and the optical filter switcher are all in communication connection with the PCB; the PCB is in communication connection with the ECU through a vehicle CAN network; the optical filter switcher is arranged in the visual field of the fisheye camera and used for connecting the infrared cut-off optical filter or the full-transmission spectrum optical filter into the visual field of the fisheye camera.

3. The system according to claim 2, wherein the filter switcher comprises a power device, a filter placing device, an infrared cut filter and a full transmission spectrum filter; the output end of the power device is fixedly connected with the central axis of the optical filter placing device; an infrared cut-off filter and a full-transmission spectrum filter are respectively arranged on two sides of the filter placing device; the power device rotates to drive the optical filter placing device to rotate around the central axis of the optical filter placing device, so that the infrared cut-off optical filter or the full-transmittance spectrum optical filter is positioned in the field of view of the fisheye camera.

4. The all-weather monitoring system for eliminating the dead zone of right turn of the truck as claimed in claim 1, wherein the voice warning device comprises a vibration damping fastening plate, a mounting seat, a voice prompter and a turn light signal collector; one end of the vibration damping fastening plate is fixed in a cab of the truck, the other end of the vibration damping fastening plate is fixed with a mounting seat, and a voice prompt is mounted on the mounting seat; the turn signal collector is arranged in a turn light of the vehicle and is in communication connection with the turn light; the voice prompter is in communication connection with the turn light signal collector; the steering lamp signal collector is used for collecting steering information of the vehicle steering lamp and then transmitting the information to the voice prompter; the voice prompter is used for broadcasting recorded prompt tones and prompting a driver to observe a 3D (three-dimensional) ring scene image displayed on a display screen of the center console.