Asymmetric transmission automatic driving system

Abstract

The invention provides an asymmetric transmission automatic driving system, which comprises a sensing unit, an execution unit, a TSN gateway and an automatic driving host, and is characterized in that the TSN gateway is respectively connected with the sensing unit, the execution unit and the automatic driving host; the sensing unit at least comprises a vehicle-mounted Ethernet camera, the vehicle-mounted Ethernet camera is connected with the TSN gateway through a first vehicle-mounted Ethernet bus, the first vehicle-mounted Ethernet bus comprises an uplink transmission line and a downlink transmission line, the uplink transmission line adopts an optical fiber transmission medium, and the downlink transmission line adopts a single unshielded twisted pair; the uplink transmission line transmits image data and feedback signals, and the downlink transmission line transmits control signals. According to the technical scheme provided by the invention, in a vehicle-mounted network camera transmission system, the uplink bandwidth and the downlink bandwidth can be ensured to be fully utilized, meanwhile, the use of the optical fiber harness can be reduced, and the cost of an automatic driving system can be reduced to the greatest extent.

Description

technical field [0001] The present invention relates to automatic driving systems, in particular to automatic driving systems with asymmetric transmission. Background technique [0002] In recent years, with the development and progress of technology, automobile technology has been promoted from manned to unmanned. However, unmanned technology involves complex systems and is difficult to achieve in the short term. Now researchers in the automobile industry are turning to conditional ones. Autonomous driving, in-vehicle cameras and lidars are very important systems for cars, making conditional car autonomous driving technology possible. However, the commercial vehicle cameras currently used in autonomous driving systems are mainly based on LVDS bus. The cost of LVDS bus wiring harness is high, and the transmission distance is limited, which restricts the development of LVDS bus vehicle cameras. In the prior art, vehicle Ethernet cameras are also provided, but either unshield...

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the development and progress of technology, the automobile technology has been promoted to develop from manned driving to unmanned driving. However, unmanned driving technology involves complex systems and is difficult to realize in the short term. Now researchers in the automotive industry are turning to qualified Autonomous driving, on-board cameras and lidar are very important systems in cars, making conditional auto-driving technology possible

However, at present, the commercial vehicle cameras used in the automatic driving system are mainly based on the LVDS bus. The high cost of the wiring harness of the LVDS bus, coupled with the limited transmission distance, restricts the development of the LVDS bus vehicle camera.

The prior art also provides a vehicle-mounted Ethernet camera, but either the transmission bus adopts an unshielded twisted pair or an optical fiber. If an unshielded twisted pair is used, the transmission bandwidth of the high-definition camera is not enough; cost

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