CN106454225A - Non-exclusive type access system and method of ADAS device camera - Google Patents

Abstract

The invention discloses a non-exclusive access system and method for an ADAS device camera. The system includes more than one ADAS device, a display screen, a control center, an expansion bus and more than one camera, and the ADAS device, a display screen, a control center and a camera. They are respectively connected to the expansion bus. In this method, more than one ADAS device, display screen, control center and more than one camera are respectively connected to the expansion bus. Each device is regarded as a node, and each node is assigned a corresponding address, the control center coordinates and manages each node in a unified manner according to the running status of the vehicle. The present invention can maximize the multiplexing and information sharing of camera video data; the installation of vehicle ADAS equipment and cameras is greatly simplified, and the difficulty of wiring is reduced; the ADAS equipment and camera video control data use a unified transmission format, and the vehicle type is shortened during software development. Matching time reduces production and manufacturing costs.

Description

Non-exclusive access system and method for ADAS equipment camera

technical field

The invention discloses a camera access method, in particular to a non-exclusive access system and method for an ADAS (Advanced Driver Assistance System) equipment camera, belonging to the field of automotive electronics.

Background technique

With the continuous improvement of consumers' understanding and demand for vehicle safety, the development and application of ADAS technology continue to develop, allowing more cars to be equipped with safety systems that can more effectively reduce casualties, and it is more realistic and universal. As an advanced driver assistance system, ADAS requires more and more application requirements for various new sensors such as cameras, millimeter-wave radars, infrared sensors, and laser detection.

However, with the continuous development of automobile intelligence and the integration and application of various new sensors and complex electronic modules in automobiles, it is inevitable that the resource requirements of various functional devices will overlap. Camera sensors are widely used in automotive driving safety assistance systems, such as reversing images, lane departure warning systems, 360 panoramic parking, driving recorder systems, blind spot monitoring systems, etc. The biggest problem now is that the cameras of each system are exclusively connected and controlled independently, and there is no connection between each system, resulting in overlapping construction and waste of resources, and there are endless wiring harnesses and connectors in the car. The installation and application are complicated. For example, according to the traditional access method, the limited usable space inside and outside the vehicle is already insufficient.

Please refer to accompanying drawings 1 to 4, as shown in Figures 1 to 4, each system has its own independent camera sensor device. Common devices that use cameras include: driving recorder, 360 panoramic parking, reversing image, lane departure warning system, blind spot monitoring system, etc. At present, each system generally has its own dedicated camera, which not only causes waste of cost, but also takes up a lot of installation space inside and outside the car.

The disadvantages of the traditional (exclusive) access method of the traditional ADAS equipment camera are:

1. Each device requires a dedicated camera. On the one hand, the cost is high, and on the other hand, the installation is complicated;

2. Each device requires different cameras, different access locations, increased wiring difficulty, and complicated wiring harnesses;

3. The cameras used in the equipment are different, and each new model needs to be re-matched and debugged, which increases the difficulty of development;

4. The equipment of each model needs independent production and maintenance, which increases the cost of production and maintenance;

5. Since some modules are integrated inside the device, any module upgrade needs to replace the entire device.

As mentioned above, if the current exclusive access method is used for the entire vehicle space, in addition to causing waste of resources, it cannot meet the unlimited expansion and installation requirements of various equipment, let alone meet the requirements of the rapid development of automobile intelligence.

Contents of the invention

Aiming at the above-mentioned disadvantages that each system in the ADAS system in the prior art adopts an exclusive access mode, resulting in a waste of resources, the present invention provides a non-exclusive access system and method for ADAS equipment cameras, which integrates all All ADAS devices and cameras are connected to the bus system, and a high-speed local area communication network is built in the car by using the expansion bus. All ADAS devices and cameras are connected to this network, and are transmitted on the network according to a unified encoding format and rules. , which can effectively solve the above problems.

The technical solution adopted by the present invention to solve the technical problem is: a non-exclusive access system of ADAS equipment camera, the system includes more than one ADAS equipment, display screen, control center, expansion bus and more than one camera, ADAS equipment , the display screen, the control center and the camera are respectively connected to the expansion bus.

A non-exclusive access method of an ADAS device camera, the method is that more than one ADAS device, a display screen, a control center and more than one camera are respectively connected to an expansion bus, each device is regarded as a node, and each Each node is assigned a corresponding address, and the control center coordinates and manages each node according to the vehicle running status.

The technical solution adopted by the present invention to solve its technical problems further includes:

The ADAS device is one or more of a 360° panoramic parking system, a driving recorder, a blind spot monitoring system, a reversing image system and a lane departure system.

The expansion bus adopts CAN bus, RS232, RS485, Flexray, MOST, Ethernet, LIN bus or VAN bus.

The camera includes a front camera installed in front of the vehicle, a rear camera installed in the rear of the vehicle, side cameras installed on both sides of the vehicle and a camera installed at the bottom of the vehicle.

The beneficial effects of the present invention are: the present invention can maximize the multiplexing and information sharing of camera video data; the installation of vehicle ADAS equipment and cameras is greatly simplified, and all equipment is connected nearby, reducing the difficulty of wiring; the ADAS equipment and camera video The control data uses a unified transmission format, which greatly reduces the model dependence during software development, shortens the time for model matching, and reduces manufacturing costs; ADAS equipment and cameras can be plug-and-play, bringing new benefits to subsequent vehicle maintenance/upgrades. Convenient, the upgrade of a single device will not affect the whole vehicle.

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is a circuit block diagram of a 360° panoramic parking system in the prior art.

Fig. 2 is a circuit block diagram of a reversing image system in the prior art.

Fig. 3 is a circuit block diagram of a lane departure warning system in the prior art.

Fig. 4 is a circuit block diagram of a driving recorder system in the prior art.

Fig. 5 is a circuit block diagram of the present invention.

detailed description

This embodiment is a preferred implementation mode of the present invention, and other principles and basic structures that are the same or similar to this embodiment are within the protection scope of the present invention.

Please refer to accompanying drawing 5, the non-exclusive access system of the ADAS equipment camera in the present invention mainly includes 360 ° panoramic parking system, driving recorder, blind spot monitoring system, reversing image system, lane departure system, display screen, control center , the expansion bus and more than one camera, the 360° panoramic parking system, the driving recorder, the blind spot monitoring system, the reversing image system, the display screen and the control center are respectively connected to the expansion bus. Among them, the 360° panoramic parking system is used for When parking, the driving recorder is used to record the front and rear conditions of the vehicle during driving. The blind spot monitoring system is used to monitor the blind spots outside the driver's visual range during driving. Observe the situation behind the vehicle from time to time, the lane departure system is used to monitor whether the vehicle deviates from the lane during driving, the display screen is used to display the corresponding working status, and the control center is used to coordinate and control the switching between various devices. The bus can adopt CAN bus, RS232, RS485, Flexray, MOST, Ethernet, LIN bus, VAN bus, etc., and more than one camera can include a front camera installed in front of the vehicle, a rear camera installed in the rear of the vehicle, and a Side cameras on both sides of the vehicle and cameras installed on the bottom of the vehicle, etc.

The application method of the present invention, that is, the non-exclusive access method of the ADAS equipment camera to be protected is: in this embodiment, 360° panoramic parking system, driving recorder, blind spot monitoring system, reversing image system, lane departure system, etc. ADAS devices, display screens, cameras, etc. are connected to the auxiliary bus. Each device is regarded as a node, and a corresponding address is assigned to each node. The control center coordinates and manages each node according to the vehicle operating status.

For example: during the normal driving process, the front camera and the rear camera collect the front and rear images of the vehicle, and connect to the driving recorder through the expansion bus to collect the front and rear images. As the camera of the driving recorder, the side cameras on both sides of the vehicle collect The images on both sides of the vehicle are connected to the blind spot monitoring system through the expansion bus, and are used as blind spot monitoring cameras. The display screen can be used to display the images collected by the side cameras; It is connected to the 360° panoramic parking system through the expansion bus, and it is used as a parking camera, so as to achieve time-division multiplexing of resources and reduce idle waste of resources.

The present invention constructs a high-speed local area communication network in the vehicle by using an expansion bus (such as Ethernet) for all ADAS devices and cameras, and all ADAS devices and cameras are connected to this network, and are encoded according to a unified coding format and protocol Rules are transmitted over the network.

The present invention regards each ADAS device and camera as a node on the network, connects all nodes to the expansion bus (not limited to the Ethernet mode), and constructs a non-exclusive ADAS device and camera network;

All nodes connected to the expansion bus of the present invention adopt a unified transparent protocol (such as TCP/IP protocol, UDP protocol, J1939 protocol, etc.), and the development and debugging of subsequent nodes no longer depend on the vehicle type;

All the cameras in the automobile ADAS network adopted by the present invention can be multiplexed to the greatest extent and reduce costs;

The present invention regards all cameras as independent nodes, and when a certain node is upgraded, only the corresponding node needs to be replaced without affecting the entire ADAS network, thereby greatly improving scalability and compatibility.

The present invention can maximize the multiplexing and information sharing of camera video data; the installation of vehicle ADAS equipment and cameras is greatly simplified, and all equipment is connected nearby, reducing the difficulty of wiring; ADAS equipment and camera video control data use a unified transmission format , the vehicle model dependence during software development is greatly reduced, the time for model matching is shortened, and the manufacturing cost is reduced; ADAS equipment and cameras can be plug-and-play, which brings convenience to subsequent vehicle maintenance/upgrades, and the upgrade of a single device does not Will affect the whole vehicle.

Claims (8)

1. a kind of non-exclusive formula access system of ADAS equipment camera, is characterized in that：Described system includes more than one ADAS equipment, display screen, control centre, expansion bus and more than one camera, ADAS equipment, display screen, in control The heart and camera are connected on expansion bus.

2. the non-exclusive formula access system of ADAS equipment camera according to claim 1, is characterized in that：Described ADAS Equipment is in 360 ° of panoramic parking systems, drive recorder, blind monitoring system, reverse image system and deviation system One or more.

3. the non-exclusive formula access system of ADAS equipment camera according to claim 1 and 2, is characterized in that：Described Expansion bus adopts CAN, RS232, RS485, Flexray, MOST, Ethernet, LIN bus or VAN bus.

4. the non-exclusive formula access system of ADAS equipment camera according to claim 1 and 2, is characterized in that：Described Camera includes being arranged on the front-facing camera of vehicle front, is arranged on the post-positioned pick-up head of rear view of vehicle, is arranged on vehicle two The side camera of side and the camera being arranged on vehicle bottom.

5. a kind of non-exclusive formula cut-in method of ADAS equipment camera, is characterized in that：The method sets for more than one ADAS Standby, display screen, control centre and more than one camera are connected on expansion bus, and each equipment is considered as a section Point, for one corresponding address of each node distribution, control centre assists to each node according to travel condition of vehicle unification Adjust management.

6. the non-exclusive formula cut-in method of ADAS equipment camera according to claim 5, is characterized in that：Described ADAS Equipment is in 360 ° of panoramic parking systems, drive recorder, blind monitoring system, reverse image system and deviation system One or more.

7. the non-exclusive formula cut-in method of ADAS equipment camera according to claim 5, is characterized in that：Described extension Bus adopts CAN, RS232, RS485, Flexray, MOST, Ethernet, LIN bus or VAN bus.

8. the non-exclusive formula cut-in method of ADAS equipment camera according to claim 5, is characterized in that：Described shooting Head includes being arranged on the front-facing camera of vehicle front, being arranged on the post-positioned pick-up head of rear view of vehicle, be arranged on vehicle both sides Side camera and the camera being arranged on vehicle bottom.