Rescue Request Apparatus Trajectory Tracing for Signal Transmission
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Solution Overview
Problem
Existing rescue request systems fail to reliably transmit rescue signals when radio communication is unavailable, such as in areas where GPS positioning is also impossible, limiting their effectiveness in emergency situations like getting lost in mountains.
Innovation Solution
A rescue request apparatus equipped with a radio communication unit, trajectory acquisition unit, user-state determination unit, and drive control unit that acquires movement trajectories when communication is lost, determines the user's dangerous state, and drives to a location where communication is possible to transmit a rescue signal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system waits for radio communication to be available before transmitting rescue signals, then the transmission reliability is improved, but the response time is delayed when the user is in a dangerous state
Solution Approach 1:
The system performs preliminary actions by acquiring the movement trajectory and determining the user's dangerous state before radio communication becomes available. When communication is restored, the rescue signal is transmitted immediately with pre-acquired location data, eliminating the need to wait for communication availability before taking action.
Solution Approach 2:
The movement trajectory data serves as an intermediary that bridges the gap between radio communication unavailability and availability. By storing trajectory information during communication blackouts and using it as a mediator when communication is restored, the system ensures continuous rescue capability without time loss.
2Measurement precision
If the system remains stationary to maintain GPS positioning accuracy, then the measurement precision is improved, but the ability to reach communication areas is reduced
Solution Approach 1:
The system acquires the movement trajectory in advance while stationary or before communication is available. This preliminary acquisition of location data allows the system to later move to communicate without losing positioning accuracy, as the trajectory data is already recorded.
Solution Approach 2:
The system creates a copy of the movement trajectory data that can be used independently of real-time GPS positioning. This copied trajectory information allows the apparatus to move to communication areas while maintaining accurate location records for rescue signal transmission.
Data Source
AI summary
A rescue request apparatus (1) includes a radio communication unit (2) configured to perform radio communication, a trajectory acquisition unit (3) configured to acquire a movement trajectory of the rescue request apparatus when the radio communication cannot be performed by the radio communication unit (2), a user-state determination unit (4) configured to determine whether or not a user of the rescue request apparatus is in a dangerous state, and a drive control unit (5) configured to drive and control the rescue request apparatus so as to trace the movement trajectory acquired by the trajectory acquisition unit (3) when the user-state determination unit (4) determines that the user is in the dangerous state. The radio communication unit (2) transmits a rescue request signal to a pre-registered destination when the radio communication becomes possible.