Autonomous Driving Standby Terminal for Master Failure Detection
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Solution Overview
Problem
Autonomous driving vehicles face reliability and safety issues when the vehicle-mounted terminal device fails, leading to potential safety accidents due to inability to manually take over control in a timely manner.
Innovation Solution
A system comprising a master control terminal device, a standby terminal device, an electronic controller, a main sensor, and a standby sensor, where the standby terminal device periodically sends heartbeat signals to the master control terminal device to detect failures, acquires data from the standby sensor to generate control instructions, and sends these instructions to the electronic controller to ensure continued vehicle operation, while also alerting the driver to manually take control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single master control terminal device is used for autonomous driving control, then the system structure is simple and easy to operate, but the system reliability decreases when the terminal device fails
Solution Approach 1:
A standby terminal device is prepared in advance with all necessary sensors and control capabilities. When the master terminal fails, the standby device can immediately take over without requiring any reconfiguration or additional setup, thus improving reliability while maintaining simple system structure
Solution Approach 2:
The standby terminal device is created as a complete copy of the master terminal device, including identical sensors (laser radar, millimeter wave radar, cameras) and processing capabilities. This duplication ensures that the backup system can fully replace the master system in case of failure, resolving the contradiction between reliability and complexity
2Reliability
If the standby terminal device continuously monitors the master terminal device, then the failure detection capability is improved, but the energy consumption increases
Solution Approach 1:
The standby terminal device sends heartbeat signals to the master terminal at periodic intervals rather than continuously monitoring. This periodic communication maintains reliable failure detection capability while significantly reducing energy consumption compared to continuous monitoring
Solution Approach 2:
The master terminal device provides feedback responses to the heartbeat signals from the standby device. When the master terminal fails to respond, the standby device detects the failure. This feedback mechanism ensures reliable failure detection while allowing the system to enter low-power states between heartbeat intervals
Data Source
AI summary
The present disclosure discloses a system, method and apparatus for controlling an autonomous driving vehicle. A specific embodiment of the method comprises: periodically sending a heartbeat signal and/or communication data to a master control terminal device to determine whether the master control terminal device fails; and in response to determining a failure of the master control terminal device, acquiring data collected by a standby sensor, analyzing the data to generate a control instruction, and sending the generated control instruction to an electronic controller to enable the electronic controller to control the autonomous driving vehicle. The implementation improves the reliability of the autonomous driving vehicle.