Vehicle Notification Sound Control via Speed-Based Prohibition Cancellation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional vehicle notification sound emitting systems often remain silent when drivers manually turn off the notification sound feature, posing safety risks as they do not continuously emit sounds to inform people in the surrounding area of the vehicle's movement, especially for quiet vehicles like electric cars.
Innovation Solution
A vehicle notification sound emitting apparatus with a sound emitting device and a control system that automatically cancels the prohibition of notification sound emission when the vehicle exceeds a prescribed speed or based on position information, ensuring the sound is emitted to inform people of the vehicle's movement, featuring a notification sound control device with a prohibition cancelling section.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the notification sound emitting function is turned off through manual operation, then the driver has control over sound emission, but the vehicle safety is compromised as the notification sound is not emitted
Solution Approach 1:
The system changes the operational parameters of the notification sound based on vehicle speed. When the vehicle exceeds a predetermined speed, the prohibition state is automatically changed to an emission state, ensuring safety while allowing driver control at lower speeds
Solution Approach 2:
The notification sound control device continuously monitors vehicle speed and provides feedback to the sound emitting device. This closed-loop control ensures that the notification sound is emitted when safety requires it, automatically overriding driver prohibition if necessary
2Reliability
If the notification sound is continuously emitted, then people in the surrounding area are informed of vehicle movement, but the driver may experience annoyance or disturbance
Solution Approach 1:
The notification sound emission is made dynamic rather than static. The system adjusts sound emission based on real-time vehicle speed conditions, emitting sound only when the vehicle exceeds the predetermined speed threshold, thereby avoiding unnecessary driver annoyance while maintaining safety
Solution Approach 2:
The notification sound is emitted periodically or intermittently based on speed thresholds rather than continuously. This periodic emission pattern reduces driver annoyance while still providing effective safety notifications when the vehicle is in motion
3Device complexity
If a toggle switch is used to control notification sound emission, then the structure is simple, but the system cannot automatically resume sound emission when safety conditions change
Solution Approach 1:
The notification sound control device serves multiple functions: it processes driver input through the toggle switch, monitors vehicle speed continuously, and automatically controls sound emission based on safety conditions. This multi-functionality allows the system to maintain simple structure while achieving automatic safety response
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
A vehicle notification sound emitting apparatus is basically provided with a sound emitting device (1) and a notification sound control device (12). The sound emitting device emits a movement notification sound to outside of a vehicle to inform a person in an area surrounding the vehicle that the vehicle is moving at a low speed. The notification sound control device (12) operates the sound emitting device to selectively emit the movement notification sound. The notification sound control device (12) includes a notification sound prohibiting section (16) and a prohibition cancelling section (step S54). The notification sound prohibiting section (16) prohibits an emission of the movement notification sound by the sound emitting device (1). The prohibition cancelling section (step S54) cancels a notification sound emission prohibition imposed by the notification sound prohibiting section (16) either upon a vehicle speed of the vehicle exceeding a prescribed vehicle speed or based on position information of the vehicle.