On-vehicle emergency notification device mode differentiation
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Solution Overview
Problem
Existing on-vehicle emergency notification devices lack a user interface to distinguish between emergency and test notifications, leading to potential erroneous notifications due to the absence of a clear operational mode differentiation, which is costly and space-constrained.
Innovation Solution
An on-vehicle emergency notification device with an electronic control unit that operates in normal, test, and transit modes, using a single user interface to differentiate between modes through informing processing, allowing transition to test mode during a predetermined vehicle operation and returning to normal mode if no operation is performed, thereby avoiding erroneous notifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single user interface is used for both emergency and test notifications, then device complexity and cost are reduced, but the risk of erroneous notification increases
Solution Approach 1:
The system dynamically changes the function of the notification button based on the current operational mode. In normal mode, the button triggers emergency notifications. In test mode, the same button triggers test notifications. The electronic control unit monitors vehicle operations and automatically transitions between modes, making the single button context-aware and eliminating the need for separate interfaces while preventing erroneous notifications.
Solution Approach 2:
The system changes the operational parameter (notification type) based on the detected vehicle state. When specific vehicle operations are detected, the system transitions from normal mode to test mode, which changes what the notification button does. This parameter change approach allows one physical button to serve two different functions depending on the system state, resolving the contradiction between simplicity and reliability.
2Reliability
If mode distinction is added to the user interface, then notification accuracy improves, but device complexity and mounting space increase
Solution Approach 1:
The system uses the vehicle's own operational data to automatically determine the appropriate notification mode. The electronic control unit monitors vehicle operations and autonomously transitions between normal and test modes without requiring additional user interface elements. This self-service approach maintains high reliability through clear mode distinction while avoiding the complexity of additional buttons, displays, or user interactions.
Data Source
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AI summary
An emergency notification device (100) performs emergency notification to send an emergency notification to a notification center when an urgent event is generated on a vehicle (200), and test notification to diagnose whether the emergency notification can be performed, through a notification button (112) that is a part of one user interface. This device has a normal mode in which emergency notification can be performed, and a test mode in which test notification can be performed, through an operation of the notification button (112), as well as a transit mode in which transition from the normal mode to the test mode can be performed with a predetermined vehicle operation in the normal mode as a trigger. The emergency notification device (100) performs informing processing, which differs from mode to mode, through indicators (113R) and (113G) that are another part of the one user interface.