CN210363590U - Vehicle body bottom image driving auxiliary system - Google Patents
Vehicle body bottom image driving auxiliary system Download PDFInfo
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- CN210363590U CN210363590U CN201921206493.9U CN201921206493U CN210363590U CN 210363590 U CN210363590 U CN 210363590U CN 201921206493 U CN201921206493 U CN 201921206493U CN 210363590 U CN210363590 U CN 210363590U
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Abstract
The utility model provides an auxiliary system for driving an image at the bottom of a vehicle body, which comprises a camera, a power module and a display device, wherein the power module supplies power to the camera and the display device, and the camera is connected with the display device; the camera includes leading camera, rear camera, and the bottom in the middle of leading camera installation vehicle locomotive front end, and the rear camera is installed in the bottom in the middle of the locomotive tail end, and leading camera is used for the rear region of monitoring automobile body bottom, rear camera is used for the place ahead region of monitoring automobile body bottom, but the angle automatically regulated of leading camera and rear camera, and the visual angle of leading camera and rear camera is 100~ 178. The utility model provides a locomotive bottom image auxiliary system for the driver can watch the environment of the underbody that originally has the vision blind area in real time, improves locomotive driving's experience and safety.
Description
Technical Field
The utility model relates to a car image driving assistance system especially relates to a be applied to automobile body bottom image driving assistance system.
Background
With the popularization of automobiles, more and more automobiles enter thousands of households, and with the rapid development of electronic technology, a plurality of novel electronic products and technologies are considered to be capable of greatly improving the driving experience and safety of locomotives. The reason for traffic accidents is that besides the factors of drivers, such as violations, drunk driving or fatigue driving, another important factor is that vehicles have many blind areas in the field of vision during driving, and traffic accidents are easy to happen. In the prior art, in order to solve a visual blind area, a camera is adopted in a common technology, a 360-degree panoramic image is adopted as a mature method for solving the blind area of an automobile at present, the camera is installed in the front and the back of an automobile body, the cameras of different manufacturers are slightly different in installation position, generally, the two cameras are respectively installed on a left rearview mirror and a right rearview mirror, a front windshield is provided with one camera, and a rear window is provided with one camera. The 360-degree panoramic image is an auxiliary system which is used for watching 360-degree panoramic fusion around the automobile through a vehicle-mounted display screen, realizing an ultra-wide visual angle and seamlessly splicing real-time image information (aerial view image), knowing a blind area of peripheral sight of the automobile and helping a driver of the automobile to drive and park the automobile more intuitively and safely.
However, in the driving process of the locomotive, the bottom of the locomotive body belongs to a visual blind area, and certain safety risk exists if real-time images of the bottom of the locomotive body do not exist. In real life, the underbody is an area where safety accidents may occur, such as children may be hidden under a locomotive for playing or some animals may be hidden under the locomotive; when the ignition of the locomotive is started, if a child or an animal is at the bottom of the locomotive and the locomotive is running, a safety accident is caused. Meanwhile, the vehicle conditions such as no damage, oil leakage, sundries in tire gaps and the like can be checked by observing the bottom of the vehicle body. The necessity of a real-time imaging system of the underbody can be seen.
The existing vehicle-mounted imaging technology focuses on four directions of the front, the back, the left and the right of a vehicle body, and images around the vehicle body by means of four cameras arranged on the front, the back, the left and the right of the vehicle body. There is also a technology of simulating an image of the bottom of the locomotive by corresponding calculation through images obtained by front, rear, left and right cameras, but the technologies cannot observe the environment of the bottom of the locomotive body, so that a blind area appears at the bottom of the locomotive body. Therefore, a novel technology is needed to be provided, the blind area of the bottom of the vehicle body is solved, no dead angle is ensured in the driving process, and the driving is more comfortable and safer.
Disclosure of Invention
Based on the defect that exists among the prior art, the to-be-solved technical problem of the utility model lies in providing the driving assistance system that can observe the automobile body bottom environment.
In order to achieve the above object, the utility model provides a be applied to driving assistance system of automobile body bottom image, include: the camera comprises a camera, a power supply module and a display device, wherein the power supply module supplies power to the camera and the display device, and the camera is connected with the display device;
the display device and the power supply module are arranged in the cab;
the camera includes leading camera, rearmounted camera, and leading camera is installed in the centre of automobile body bottom front end, and rearmounted camera is installed in the centre of automobile body bottom rear end.
The utility model provides a be applied to car body bottom image driving assistance system, further, leading camera is used for monitoring the rear region of car body bottom, the rear camera is used for monitoring the front region of car body bottom.
The utility model provides a be applied to automobile body bottom image and drive auxiliary system, furtherly, but the angle automatically regulated of leading camera and rear camera, the visual angle of leading camera and rear camera is 100~ 178.
The driving assistant system for vehicle bottom image includes image signal processing module, memory, control module and display module,
wherein,
the image signal processing module is configured to process the image or the video acquired by the camera;
a memory configured to store the image or video processed by the image signal processing module;
a display module configured to display the image or video processed by the image signal processing module in real time or display a history image or video stored in the memory;
and the control module is configured to be responsible for calling each functional module.
The driving auxiliary system is applied to the image of the bottom of the vehicle body, further, the image signal processing module comprises a DSP (digital signal processor) and a built-in algorithm, and the DSP calls the built-in algorithm to process the image or video collected by the camera;
the control module comprises an MCU, and the calling of each functional module is carried out through the MCU.
The display device further comprises an image recognition alarm module, wherein the image recognition module is configured to recognize image signals processed by the image signal processing module, judge whether an obstacle exists at the bottom of the vehicle body, and automatically send out an early warning signal to remind a driver of paying attention to the obstacle.
The driving assistant system for the image of the bottom of the vehicle body is characterized in that a camera is connected with a display device through one of a vehicle-mounted Ethernet bus, a low-voltage differential signal bus and a composite video broadcast signal bus.
The utility model provides a be applied to car body bottom image driving auxiliary system, further, on-vehicle ethernet disposes on-vehicle ethernet chip, and the transmission of signal needs carry out the encapsulation or unpack of signal through on-vehicle ethernet chip, and on-vehicle ethernet chip includes physical layer and medium access control layer, and wherein, medium access control layer adopts IEEE 802.3's interface standard.
The vehicle-mounted Ethernet further comprises an AVB protocol, wherein the AVB protocol comprises four standard 802.1AS precise time synchronization protocols, an 802.1Qat stream reservation protocol, an 802.1Qav queue and forwarding protocol and an 802.1BA audio/video bridging system standard.
The utility model provides a be applied to car body bottom image driving assistance system, further, the camera includes one of fisheye camera, monocular camera, binocular camera.
Has the advantages that:
the utility model provides a locomotive bottom image auxiliary system can make the driver observe the locomotive bottom true environment who originally has the vision blind area in real time, thereby overcome and have the blind area in current automobile body bottom and lead to defects such as incident, improve locomotive driving's experience and safety.
The utility model provides a locomotive bottom image auxiliary system for the driver can look over the historical record of automobile body bottom surveillance video, when the bottom car breaks down, can in time look over historical video, tracks the reason that the automobile body bottom breaks down.
Drawings
The following drawings are only schematic illustrations and explanations of the present invention, and do not limit the scope of the present invention.
Fig. 1 is a schematic view of the camera installed at the bottom of the vehicle body in an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an underbody imaging system according to an embodiment of the present invention.
Fig. 3 is a flowchart illustrating the operation of the bottom imaging system according to an embodiment of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings, in which like reference numerals refer to like parts in the drawings. For the sake of simplicity, the drawings schematically show the relevant parts of the invention, and do not represent the actual structure of the product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled.
As for the control system, the functional module, application program (APP), is well known to those skilled in the art, and may take any suitable form, either hardware or software, and may be a plurality of functional modules arranged discretely, or a plurality of functional units integrated into one piece of hardware. In its simplest form, the control system may be a controller, such as a combinational logic controller, a micro-programmed controller, or the like, so long as the operations described herein are enabled. Of course, the control system may also be integrated as a different module into one physical device without departing from the basic principle and scope of the present invention.
Example 1
The present embodiment provides a driving assistance system for vehicle underbody images, specifically referring to fig. 1 to 2. Fig. 1 is a schematic view of a camera mounted on the bottom of a vehicle body, and fig. 2 is a schematic view of a structure of an underbody imaging system. The vehicle underbody image driving assistance system includes: the power supply module supplies power to the camera and the display device, and the camera is connected with the display device; the display device and the power supply module are installed in the cab.
The camera includes leading camera, rear camera, and leading camera, rear camera can be a plurality of, and leading camera is installed in the centre of automobile body bottom front end, and rear camera installs in the centre of automobile body bottom rear end. The front camera is used for monitoring the rear area of the bottom of the vehicle body, and the rear camera is used for monitoring the front area of the bottom of the vehicle body;
according to needs, the number of the front cameras and the number of the rear cameras can be increased respectively. The angle of the front camera and the angle of the rear camera can be automatically adjusted, the visual angle of the front camera and the visual angle of the rear camera are 100-178 degrees, and if a fisheye camera is adopted.
The camera comprises one of a fisheye camera, a monocular camera and a binocular camera.
The display device comprises an image signal processing module, a memory, a control module and a display module, wherein the image signal processing module is configured to be used for processing images or videos acquired by the camera;
a memory configured to store the image or video processed by the image signal processing module;
a display module configured to display the image or video processed by the image signal processing module in real time or display a history image or video stored in the memory;
and the control module is configured to be responsible for calling each functional module.
Specifically, for example, the control module outputs the video signal output by the image signal processing module to the display module and stores the video signal in the memory or reads the video information in the memory and outputs the video signal to the display module.
The image signal processing module comprises a DSP (digital signal processor) processor and a built-in algorithm, and the DSP processor calls the built-in algorithm to process the image or video collected by the camera.
The control module comprises an MCU (micro-processing controller), and the calling of each functional module is carried out through the MCU.
The vehicle body bottom monitoring system further comprises an image recognition and alarm module, wherein the image recognition module is configured to recognize image signals processed by the image signal processing module, judge whether an obstacle exists at the bottom of the vehicle body, and automatically send out an early warning signal to remind a driver of paying attention when the obstacle exists.
Specifically, the operation mode of the vehicle body bottom image driving auxiliary system is that when the locomotive is ignited and started, the power module is powered on and provides power for all the modules, the camera starts to collect the image signals of the bottom of the locomotive, the collected digital image signals are transmitted to the image signal processing module of the display device in the locomotive cab, the image signal processing module outputs video signals to the display module after processing the collected digital image signals, and a driver can check real non-blind-area real-time images of the bottom of the locomotive through the display screen in the cab.
If a part of the underbody is damaged, the driver can transmit the historical video information stored in the memory to the display module through the control module, and the display module can check the video to analyze the reason of the underbody damage.
The connection between the camera and the display device is one of a vehicle-mounted ethernet bus or a Low-Voltage Differential Signaling (LVDS) bus or a CVBS (Composite Video broadcast signal) bus, or other forms, such as: HDMI, DVI, VGA.
The vehicle-mounted Ethernet bus transmission has low cost, can reduce the transmission delay of audio and video, and has higher transmission rate.
Vehicle ethernet is a new type of lan technology for ethernet connection to in-vehicle electronics units. Unlike the conventional ethernet using 2 or 4 pairs of Unshielded Twisted Pair (UTP) cables, the physical layer of the car ethernet uses BroadR-Reach technology of blosson corporation, which has been standardized by one-pair ethernet alliance (OPEN). The vehicle-mounted Ethernet can realize the data transmission rate of 100 Mbps or even 1Gbps on a single pair of unshielded twisted pair wires, and simultaneously meets the requirements of the automobile industry on high reliability, low electromagnetic radiation, low power consumption, low delay, synchronous real-time property and the like. The MAC layer of the vehicle-mounted Ethernet adopts the interface standard of IEEE802.3 and can support widely used high-level network protocols (such as TCP/IP).
The vehicle-mounted ethernet is configured with a vehicle-mounted ethernet chip, signal transmission needs to be performed by the vehicle-mounted ethernet chip for signal encapsulation or unpacking, and the vehicle-mounted ethernet chip includes a physical layer (PHY layer) and a medium access control layer (MAC layer), where the medium access control layer adopts an interface standard of IEEE 802.3.
The vehicle-mounted Ethernet also comprises an Ethernet Audio/Video Bridging (AVB) protocol, and the AVB protocol mainly comprises four standard 802.1AS accurate time synchronization protocols, an 802.1Qat stream reservation protocol, an 802.1Qav queue and forwarding protocol, and an 802.1BA Audio/Video Bridging system standard:
802.1AS precision time synchronization Protocol (precision time Protocol, PTP for short): a low delay, low jitter clock is provided. PTP defines a clock synchronization mechanism of the whole network based on an IEEE1588:2002 protocol. By defining the mechanisms of master clock selection and negotiation algorithm, path delay measurement and compensation, and clock frequency matching and adjustment, PTP devices exchange standard ethernet messages, synchronizing the time of each node of the network to a common master clock. AS a simplified version of the IEEE1588 protocol, the biggest difference between IEEE 802.1AS and 1588 is that PTP is a protocol based entirely on two-layer network, non-IP routing. Like IEEE1588, PTP defines a method of auto-negotiating a network Master Clock, i.e., a Best Master Clock Algorithm (BMCA). BMCA defines the underlying negotiation and signaling mechanism for identifying the master clock (Grandmaster) within the AVB local area network. Once the master clock is selected, the PTP equipment of all local area network nodes takes the master clock as a reference value, and if the Grandmaster changes, the whole AVB network can determine a new master clock in the shortest time through the BMCA, so that the whole network is ensured to keep time synchronization. The core of the 802.1AS is the timestamp mechanism (Timestamping). When a PTP message enters or exits a port with an 802.1AS function, a local real-time clock (RTC) is sampled according to protocol triggering, the RTC value of the PTP message is compared with information from a Master clock (Master) corresponding to the port, and the RTC clock value of the PTP message is matched with the time of a PTP domain by utilizing a path delay measuring and compensating technology. When the PTP synchronization mechanism covers the whole AVB local area network, the clock adjustment and the frequency matching algorithm can be accurately realized among all network node devices through the periodic exchange of PTP messages. Eventually, all PTP nodes will synchronize to the same "wall clock" (WallClock) time, i.e., Grandmaster time. In a network environment with 7 hops at most, the PTP can theoretically ensure that the clock synchronization error is within 1 μ s.
802.1Qat Stream Reservation Protocol (SRP) solves the competition problem between AV real-time flow and common asynchronous TCP flow in network. Through the negotiation mechanism, the required bandwidth resources are reserved on the whole path of the AV flow from the source equipment to different switches and then to the terminal equipment, so that the End-to-End (End-to-End) service quality and delay guarantee are provided.
802.1Qav queue and Forwarding Protocol (Qav) is used for solving the problem of competition between AV real-time traffic and ordinary asynchronous TCP traffic in a network. Through the negotiation mechanism, the required bandwidth resources are reserved on the whole path of the AV flow from the source equipment to different switches and then to the terminal equipment, so as to provide End-to-End (End-to-End) service quality and delay guarantee. The 802.1BA AV bridging System protocol (AVB) defines the profiles for AVB systems.
Example 2
This implementation provides the operation method of the driving assistance system for the car body bottom image, refer to fig. 3 and fig. 3, which is a flow chart of the operation of the car body bottom image system in an embodiment of the present invention.
The operation method of the vehicle body bottom image driving assistance system comprises the following steps:
step S100, igniting the vehicle body;
specifically, the ignition of the automobile body means that the automobile is started, and the engine starts to work;
s101, acquiring image signals of the bottom of the vehicle body through a front camera and a rear camera of the bottom of the vehicle body and transmitting the image signals to an image signal processing module;
step S102, the image signal processing module carries out image processing on the image signal of the bottom of the vehicle body;
subsequent synchronous execution steps S103 and S104;
step S103, transmitting the image signal to a display module for displaying and storing the image signal in a memory;
and step S104, transmitting the processed image signal to an identification module for detection, detecting whether an obstacle appears, and starting voice early warning to prompt a driver to pay attention when the obstacle is found.
The utility model provides a locomotive bottom image auxiliary system has overcome the defect of current locomotive bottom imaging technology authenticity and real-time, provides the real non-blind area's in real-time formation of image in locomotive bottom of vision blind area, improves the experience and the safety that the locomotive drove.
What has been described above is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments. It will be apparent to those skilled in the art that the form of the underbody imaging drive assist system in this embodiment is not limited thereto, and the adjustable manner is not limited thereto. It is understood that other modifications and variations directly derivable or suggested by a person skilled in the art without departing from the basic idea of the invention are considered to be within the scope of protection of the invention.
Claims (10)
1. A driving auxiliary system applied to an image of the bottom of a vehicle body is characterized by comprising a camera, a power module and a display device, wherein the power module supplies power to the camera and the display device, and the camera is connected with the display device;
the display device and the power supply module are arranged in the cab;
the camera includes leading camera, rearmounted camera, and wherein, leading camera is installed in the centre of automobile body bottom front end, and rearmounted camera is installed in the centre of automobile body bottom rear end.
2. The driving assistance system for imaging the vehicle underbody as claimed in claim 1, wherein said front camera is used for monitoring a rear region of the vehicle underbody, and said rear camera is used for monitoring a front region of the vehicle underbody.
3. The driving assistance system for the underbody image as claimed in claim 1, wherein the angle of the front camera and the rear camera is automatically adjustable, and the viewing angle of the front camera and the rear camera is 100-178 °.
4. The driving assistance system for underbody imagery according to claim 1, wherein said display device comprises an image signal processing module, a memory, a control module, a display module,
wherein,
the image signal processing module is configured to process the image or the video acquired by the camera;
a memory configured to store the image or video processed by the image signal processing module;
a display module configured to display the image or video processed by the image signal processing module in real time or display a history image or video stored in the memory;
and the control module is configured to be responsible for calling each functional module.
5. The driving assistance system for the underbody imagery according to claim 4, wherein the image signal processing module includes a DSP processor and a built-in algorithm, and the DSP processor calls the built-in algorithm to process the image or video captured by the camera;
the control module comprises an MCU, and the calling of each functional module is carried out through the MCU.
6. The driving assistance system for imaging the underbody as claimed in claim 4, wherein the display device further comprises an image recognition and alarm module, the image recognition module is configured to recognize the image signal processed by the image signal processing module, determine whether there is an obstacle in the underbody, and automatically send out an early warning signal to remind the driver of the obstacle.
7. The driving assistance system for underbody video as claimed in claim 1, wherein the connection between the camera and the display device is one of an on-board ethernet bus, a low voltage differential signal bus, and a composite video broadcast signal bus.
8. The driving assistance system for underbody imaging as claimed in claim 7, wherein the vehicle ethernet is configured with a vehicle ethernet chip, the signal transmission requires the encapsulation or unpacking of the signal by the vehicle ethernet chip, the vehicle ethernet chip comprises a physical layer and a medium access control layer, wherein the medium access control layer adopts an interface standard of IEEE 802.3.
9. The driving assistance system for imaging of the underbody AS claimed in claim 7, wherein the on-board ethernet further comprises an ethernet audio video bridging technology protocol, and the ethernet audio video bridging technology protocol comprises a standard 802.1AS precision time synchronization protocol, an 802.1Qat stream reservation protocol, an 802.1Qav queue and forwarding protocol, and an 802.1BA audio video bridging system protocol.
10. The driving assistance system for underbody imagery according to claim 1, wherein said camera comprises one of a fisheye camera, a monocular camera, and a binocular camera.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112124201A (en) * | 2020-10-10 | 2020-12-25 | 深圳道可视科技有限公司 | Panoramic parking system with visible picture blind areas and method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112124201A (en) * | 2020-10-10 | 2020-12-25 | 深圳道可视科技有限公司 | Panoramic parking system with visible picture blind areas and method thereof |
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