Automatic driving speed control system and method based on high-precision navigation and positioning system

A technology of automatic driving, navigation and positioning, applied in control devices, external condition input parameters, transportation and packaging, etc., can solve the problems of automatic driving comfort, slope recognition, traffic accidents, etc. Timely, to avoid the effect of rear-end collision

Active Publication Date: 2017-03-29
DONGFENG MOTOR CORP HUBEI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the above-mentioned sensors cannot identify the slope, and in extreme weather such as rain, snow, fog, etc., the road signs beyond the distance (300 meters) cannot be effectively identified, causing the driver to find that the

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  • Automatic driving speed control system and method based on high-precision navigation and positioning system
  • Automatic driving speed control system and method based on high-precision navigation and positioning system

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Embodiment Construction

[0020] Below by specific embodiment the present invention is described in further detail:

[0021] Such as figure 1 As shown, the present invention mainly includes a high-precision navigation and positioning system, an automatic driving controller, an engine controller, an engine, a brake controller and a vehicle body controller. The high-precision navigation and positioning system obtains long-distance information, and the system also includes millimeter-wave radar and cameras for short-distance information. Among them, the automatic driving controller communicates with the engine controller, brake controller and body controller through the CAN bus.

[0022] Such as figure 2 Shown, the control process of the present invention is as follows:

[0023] The high-precision navigation and positioning system will obtain the current road in front of the road 300 meters away from the long slope and the long slope

[0024] Information such as road traffic signs, slope information ...

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Abstract

The invention relates to the technical field of automatic driving, in particular to an automatic driving speed control system and method based on a high-precision navigation and positioning system. The automatic driving speed control method comprises the following steps of: obtaining road relevant information stored in a high-precision map of an existing road section; fusing the road relevant information stored in the high-precision map of the existing road section with vehicle travelling state information to calculate target vehicle speed suitable for automatic driving; comparing the target vehicle speed with existing vehicle speed; if the target vehicle speed is greater than or smaller than the existing vehicle speed, sending an engine enabling signal and an engine torque request instruction to an engine controller, and enabling the existing vehicle speed to be equal to the target vehicle speed, wherein the engine controller correspondingly regulates engine torque according to the engine torque request instruction. According to the automatic driving speed control system and method, a power system and a brake system are controlled in advance to take measures, so that the vehicle speed is timely corrected, and the problem that vehicle speed control is not timely is effectively solved. Under an emergency situation, a brake lamp is light to remind a vehicle behind to control vehicle speed, so that rear-end collision is avoided.

Description

technical field [0001] The invention relates to the technical field of automatic driving, in particular to an automatic driving speed control system and method based on a high-precision navigation and positioning system. Background technique [0002] Autopilot technology has gone through decades of development from its inception to the present. Driving on flat roads, with the help of laser radar, millimeter-wave radar, cameras and other sensors to identify the road, the automatic driving function can be better realized. Since the above-mentioned sensors cannot identify the slope, and in extreme weather such as rain, snow, fog, etc., the road signs beyond the distance (300 meters) cannot be effectively identified, causing the driver to find that the distance is too close, and the speed cannot be adjusted in time. It is prone to traffic accidents, which seriously affects the safety of vehicles, members, property and pedestrians, and also affects the comfort of automatic drivi...

Claims

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Application Information

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IPC IPC(8): B60W10/06B60W10/18B60W10/30B60W40/105B60W40/076B60Q1/44B60Q1/52B60Q5/00
CPCB60Q1/44B60Q1/525B60Q5/006B60W10/06B60W10/18B60W10/30B60W40/076B60W40/105B60W2050/0014B60W2050/0043B60W2050/0075B60W2520/10B60W2710/0666B60W2710/18B60W2552/15B60W2555/60B60W2556/45
Inventor 冯春方强李凯
Owner DONGFENG MOTOR CORP HUBEI
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