Vehicle Alert System Using Portable Terminal Verification
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Solution Overview
Problem
Conventional forgotten-operation notifying systems for vehicles fail to accurately reflect user intention and distinguish between intended and unintended vehicle status changes, leading to unsuccessful notifications due to communication failures in areas with poor connectivity or when the portable terminal is moved out of range.
Innovation Solution
An alert system with a vehicle-mounted communication device and a portable terminal that transmits verification information within a communication range, allowing the portable terminal to determine alert necessity based on changes in communication range and stored reference status, and performs alerts when the vehicle is likely in an unfavorable status without user intention, even if the terminal is stationary or within expanded communication ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the portable terminal is moved out of the communication range to determine forgotten operations, then the notification can be sent via center, but communication may fail in areas with poor connectivity or when the terminal is left in the vehicle
Solution Approach 1:
The system performs preliminary determination of forgotten operations while the portable terminal is still within communication range of the vehicle. The vehicle-mounted notification device determines the forgotten operation status before the terminal moves out of range, so that notification can be immediately sent through direct communication without relying on center communication, thereby ensuring reliable notification delivery while maintaining user convenience
Solution Approach 2:
The vehicle-mounted notification device serves as an intermediary that performs the determination function locally within the vehicle's communication range. This intermediary approach allows the system to determine forgotten operations and send notifications through direct communication between the vehicle and terminal, avoiding the need to move the terminal out of range or rely on center communication, thus resolving the contradiction between notification reliability and user convenience
2Ease of operation
If the vehicle-mounted notification device uses predetermined determination conditions, then the system is simple to operate, but the user's intention cannot be reflected and proper distinction between intended and unintended status changes is impossible
Solution Approach 1:
The system incorporates feedback mechanisms where the vehicle-mounted notification device continuously monitors vehicle status changes and compares them against determination conditions. When a status change occurs, the device determines whether it constitutes a forgotten operation based on the current context and user behavior patterns, then provides appropriate notifications. This feedback-based approach enables the system to reflect user intentions and accurately distinguish between intended and unintended status changes while maintaining ease of operation through automated determination
Data Source
AI summary
An alert system includes a vehicle that transmits predetermined verification information within a communication range and a portable terminal that performs a predetermined alert operation on receiving the verification information. The portable terminal includes a control part that stores reference status being status of the vehicle and needing no alert operation. The control part regularly receives the verification information within the communication range. The control part determines that an alert operation is necessary when the portable terminal is moved out of the communication range from inside of the communication range and when a result of comparison between the verification information received immediately before the portable terminal is moved out of the communication range and the reference status stored in advance indicates that the verification information and the reference status are different. The control part performs the alert operation when it is determined that the alert operation is necessary.