Driving Assist Device Interruption Detection Braking
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Solution Overview
Problem
Conventional driving assist devices fail to correctly inform drivers of the interruption of preceding-vehicle following due to undetected abnormalities in the driving assist system, potentially leading to the own vehicle approaching the preceding vehicle when the preceding vehicle decelerates.
Innovation Solution
A driving assist device with an information acquiring section, a driving control execution section, an interruption detection section, and a deceleration section that acquires driving control information, detects interruptions in preceding-vehicle following, and decelerates the own vehicle using a predetermined braking force to provide the driver with correct information about the interruption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the conventional driving assist device maintains predetermined vehicle speed when preceding vehicle following is interrupted, then the device operates simply without complex control, but the driver is not correctly informed of the interruption and safety is compromised
Solution Approach 1:
The system applies preliminary anti-action by detecting the interruption of preceding-vehicle following and proactively applying braking force to prevent potential collision. The interruption detection section identifies when the driving assist system cannot detect the preceding vehicle, and the deceleration section applies braking force before a dangerous situation develops, thereby preventing the harmful effect of undetected interruption while maintaining relatively simple control logic.
2Use of energy by moving object
If the driving assist device does not decelerate when interruption is not detected, then energy consumption is reduced, but the own vehicle may closely approach the preceding vehicle causing safety hazards
Solution Approach 1:
The system implements feedback by continuously monitoring the detection status of the preceding vehicle through the information acquiring section and interruption detection section. When the system detects that it cannot acquire driving control information (interruption detected), it triggers the deceleration section to apply braking force. This feedback mechanism ensures that braking is applied only when necessary (when interruption is detected), avoiding unnecessary energy consumption while preventing collision risks.
3Loss of information
If the driving assist device provides accurate interruption information to the driver, then driver awareness and safety are improved, but the device complexity increases due to additional detection and notification mechanisms
Solution Approach 1:
The system applies self-service by using the existing driving assist system components (information acquiring section, driving control execution section) to detect interruptions and using the existing braking mechanism (deceleration section) to communicate the interruption to the driver. The braking force application serves dual purposes: it prevents potential collision and simultaneously notifies the driver of the interruption. This eliminates the need for separate notification mechanisms, maintaining system simplicity while providing accurate interruption information to the driver.
Data Source
AI summary
In a driving assist system, a driving assist device as a control device acquires driving control information to be used for performing a driving control process in which an own vehicle follows a preceding vehicle running on the same lane of the own vehicle in front of the own vehicle. The driving assist device performs the driving control process of the own vehicle based on the acquired driving control information. The driving assist device detects an interruption of a preceding-vehicle following of the own vehicle. In the preceding-vehicle following, the own vehicle follows the preceding vehicle running on the same lane. The driving assist device decelerates a vehicle speed of the own vehicle by using a predetermined braking force when detecting the interruption of the preceding-vehicle following of the own vehicle during the preceding-vehicle following.