Vehicle Warning Sound Controller Smooth Transition
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Solution Overview
Problem
Existing vehicle warning sound emitting systems abruptly switch between engine sound and warning sound, making it difficult for pedestrians to ascertain vehicle position, direction, and speed, leading to confusion and potential misinterpretation of the vehicle's movement.
Innovation Solution
A vehicle warning sound emitting apparatus with a controller that selectively emits a warning sound during prescribed periods when the engine sound is present, using timers to manage the transition between emitting and silencing the warning sound based on vehicle traveling conditions, ensuring a smooth and continuous conveyance of vehicle information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the warning sound emitting apparatus is switched from operating state to non-operating state when engine sound is emitted, then the device complexity is reduced, but the information continuity deteriorates causing abrupt sound switching
Solution Approach 1:
The controller starts the engine before the vehicle begins moving, ensuring the engine sound is already emitting when motion starts. This preliminary action allows the warning sound to be gradually reduced and stopped without abrupt switching, as the engine sound is already present to provide continuous information to pedestrians.
2Use of energy by moving object
If the warning sound is stopped immediately when engine sound starts, then the energy consumption is reduced, but the pedestrian safety deteriorates due to confusion from abrupt sound changes
Solution Approach 1:
The engine is started in advance before vehicle motion begins, so the engine sound is already emitting when the vehicle starts moving. This allows the warning sound to be gradually reduced and stopped without abrupt switching, maintaining continuous acoustic information for pedestrian safety while reducing energy consumption by avoiding prolonged warning sound emission.
3Speed
If the switching between warning sound and engine sound is made abrupt, then the response time is improved, but the measurement precision deteriorates making it difficult for pedestrians to ascertain vehicle conditions
Solution Approach 1:
The engine is started before vehicle motion begins, creating a gradual transition period where both warning sound and engine sound are present. This allows pedestrians to continuously perceive vehicle information without abrupt sound changes, improving the precision of vehicle condition detection while maintaining fast response through automated control.
Data Source
AI summary
A vehicle warning sound emitting apparatus includes a warning sound emitting component and a controller. The warning sound emitting component selectively emits a warning sound that is audible outside of the vehicle. The controller controls the warning sound emitting component to emit the warning sound during a prescribed period that an engine sound is being emitted from an engine of the vehicle such that the engine sound and the warning sound are audible at a location outside the vehicle during the prescribed period when the controller is controlling the warning sound emitting component to switch between emitting the warning sound and refraining from emitting the warning sound based on a vehicle traveling condition.