【Jiaqin Comment】Huawei's assisted driving solution using drones uses flying devices mounted on the body of the vehicle to obtain traffic information around the vehicle in real time, and transmits it to the vehicle for display or automatic driving decision-making, thereby improving vehicle driving safety and road traffic efficiency.
In daily traffic, traffic accidents are often caused by insufficient sensor perception range that blocks the blind spot to block the driver's field of vision or the vehicle configuration. For example, when a vehicle is obscured by other vehicles, buildings, or facilities, the driver or the sensors configured with the vehicle do not acquire enough environmental information to make timely and reasonable decisions.
At the same time, the blind spot may also affect the traffic efficiency, such as when following the car, the vehicle in front is higher, the driver is likely to not observe the traffic light state in front, it is not convenient to make the most reasonable driving decision; or when multiple lanes can be passed, because the driver usually can not observe the state of the lanes in front, it is not convenient to make the most reasonable lane selection decision.
In the existing solution, consider adding a liquid crystal display screen to the rear of the vehicle, and the front car displays the traffic information in front of the front car in real time on the front car display, so that the driver of the rear vehicle can observe whether there are pedestrians crossing the road in front of them, and whether there are overtaking conditions. However, this solution is costly and difficult to popularize, and it is difficult to install a monitor on the trunk of a passenger car, which is not easy to be accepted by consumers.
To this end, on February 24, 2021, Huawei applied for an invention patent entitled "Assisted Driving Method, Shutdown Slot, Chip, Electronic Device, and Storage Medium" (application number: 202180000464.0), and the applicant was Huawei Technologies Co., Ltd.
According to the relevant information currently published in the patent, let's take a look at this technical solution.
As shown above, is a schematic diagram of the structure of the car equipped with a parking slot invented in the patent, the parking slot is disposed on the vehicle 100, the position of the roof to avoid the vehicle sunroof is provided with a recessed parking slot 110, the parking slot comprises a bottom wall 112 and a side wall 114, the bottom wall is provided with a diversion slot 1121 and a wireless charging base 1122. The bottom of the flight device 200 is correspondingly provided with a wireless charging receiver, when the wireless charging receiver of the flight device is fitted to the wireless charging base, it can be charged for the flight device.
The deflector slot set on the bottom wall is conducive to the heat dissipation of the flight device when charging, the direction of the deflector slot is consistent with the direction of the vehicle, in order to improve the heat dissipation efficiency, it can be set to a variety of styles such as straight, polyline and wave type. On the bottom wall is also provided with snap 1123 and slotted 1124, the snap can lock the flight device, slotted can be connected to the inside and outside of the depot, so that in the rain can be drained.
In addition, the snap has a self-locking function, when the vehicle loses power, the snap will automatically lock, thus preventing the flight device from being stolen. When the flight device lands in the parking slot, the first circuit forms a closed loop through the connection part, that is, the first circuit is turned on, so that it can be judged that the flight device lands smoothly to the parking tank, and the flight device can send a successful landing message to the vehicle.
As shown above, a schematic diagram of the data interaction between the vehicle and the flight device, when the flight device and the vehicle meet the first preset conditions, and the flight device receives the activation command sent by the vehicle, the flight device enters the self-test mode, including checking whether the speed of each rotor is normal. When the self-test of the flying device passes, the flying device can obtain the vehicle's speed information and position information, and fly according to these two information to maintain consistency with the position of the body.
When the flying device is flying, it transmits the road image taken by the camera to the vehicle to help the automatic driving system perform automatic driving analysis. In the flight device system, the first three-dimensional coordinate system S1, the second three-dimensional coordinate system S2 and the third three-dimensional coordinate system S3 are also defined, which is due to the deviation between the perspective of the vehicle and the perspective of the flight device, and the need to use different coordinate systems to convert the coordinates of the road image.
After obtaining a data-converted image of the road conditions, the image can be displayed on the on-board display so that the driver can respond, thereby reducing the occurrence of traffic accidents, and also making it easier for the driver to make lane change decisions in advance. When the driver is ready to change lanes or turn, the flight device can also display the vehicle and pedestrian information behind it on the on-board display to make safe driving decisions.
Finally, as shown in the figure above, for the process diagram of the auxiliary driving method invented in the patent, first, the system receives the start command and completes the self-test of the flight device, and obtains the speed and position information of the vehicle when the self-test passes. Second, the flight is based on the obtained vehicle information and the resulting road condition image is sent to the vehicle. Finally, when the flight device meets the landing conditions, it can control the flight device to return to the shutdown slot.
The above is Huawei's invention of the use of unmanned aerial vehicle assisted driving method, the scheme uses the flying device mounted on the body to obtain traffic information around the vehicle in real time, and transmit it to the vehicle for display or automatic driving decision-making, thereby improving vehicle driving safety and road traffic efficiency.