Autonomous Vehicle Stop Control for Touch Panel Failure
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Solution Overview
Problem
Existing automatic driving vehicles lack a reliable mechanism to handle anomalies in deceleration operation devices during automatic driving mode, particularly when the deceleration operation device is inoperable due to panel or communication system failures, as discussed in JP 2018-12478A does not address this scenario.
Innovation Solution
An automatic driving control system with a deceleration operation device, an emergency stop operation device, and a transmission device to encourage operator intervention via a touch panel display and sound alerts when anomalies occur, allowing the operator to decide on an emergency stop, and includes mechanisms to forcibly stop the vehicle if necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a button is displayed on a touch panel for deceleration control, then the ease of operation is improved, but the reliability deteriorates when the touch panel or communication system experiences an anomaly
Solution Approach 1:
The patent introduces a message transmission device as an intermediary communication channel between the anomaly detection device and the outside world. When the touch panel or communication system fails, this alternative transmission path enables the system to still convey anomaly information to the operator, maintaining system reliability without compromising the ease of operation of the touch interface
Solution Approach 2:
The system performs preliminary anomaly detection and prepares alternative communication paths before actual failures occur. The anomaly detection device continuously monitors system status and pre-establishes message transmission capabilities through multiple channels, ensuring that when a failure occurs, the system can immediately switch to alternative communication methods without compromising reliability
2Productivity
If the system automatically handles anomalies without operator decision, then the productivity is improved, but the reliability deteriorates due to potential inappropriate automated responses
Solution Approach 1:
The patent implements a feedback mechanism where the anomaly detection device provides information to the operator through message transmission, and the operator's decision (whether to stop the vehicle) feeds back into the control device. This closed-loop feedback system maintains high productivity by enabling rapid anomaly detection while preserving reliability by allowing human judgment to determine the appropriate response based on the specific situation
3Reliability
If multiple operation devices are provided for stop control, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The patent makes the message transmission device multi-functional by enabling it to serve both as a communication interface for anomaly notification and as an alternative control interface for stop commands. This universality allows the system to maintain reliability through multiple operation paths without proportionally increasing device complexity, as the same hardware components perform multiple functions
Data Source
AI summary
An automatic driving vehicle is running in an automatic driving mode effected by a driving control device. An operator is able to instruct via a SLOW DOWN button on a touch panel that the automatic driving vehicle is to be decelerated or stopped. Should any anomaly occur to the SLOW DOWN button, a message or the like is displayed on a touch panel to encourage operation of an emergency stop switch. When the operator operates the emergency stop switch, emergency stop control is executed.