GMSL camera time synchronization control method for automatic driving

Abstract

The invention provides a GMSL camera time synchronization control method for automatic driving, which comprises a hardware architecture part and a control method part, and enables a plurality of GMSL cameras to receive signal information from the same clock input source through a series-parallel connection mode among an embedded chip, a GMSL deserializer and the GMSL cameras and improvement of the control method. And pictures can be output at the same or different frequencies and phases, so that the cooperative and synchronous work of multiple paths of GMSL cameras is realized.

Description

technical field [0001] The invention belongs to the field of vehicle-road cooperative automatic driving, and in particular relates to a GMSL camera time synchronization control method for automatic driving. Background technique [0002] The intelligent driving or assisted driving of the car is an important part of the future car driving system. At present, for the real-time driving of smart cars, it is relatively common and practical to obtain real-time road condition information through cameras to capture real-time scene conditions. [0003] However, because the vehicle itself or obstacles have a certain moving speed, once there is a certain time difference between the cameras, even a small time difference will have a great impact, such as driving at a speed of 100 kilometers per hour. Under such circumstances, even if the trigger time difference between the two cameras is small, there will be a great driving hazard. [0004] In view of the above problems, existing R&D pe...

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Problems solved by technology

[0003] However, because the vehicle itself or obstacles have a certain moving speed, once there is a certain time difference between the cameras, even a small time difference will have a great impact, such as driving at a speed of 100 kilometers per hour. In this situation, even if the trigger time difference between the two cameras is very small, there will be a great driving hazard

[0004] In view of the above problems, existing R&D personnel have proposed a variety of solutions, among which the method of synchronizing with GMSL can effectively solve the problem of image transmission, but the existing solutions are often complex in structure, poor in versatility, and have problems There is a large degree of signal loss, and it is impossible to achieve multiple cameras without interfering with each other and synchronously cooperating at a low cost

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