Electronic Device Power Reduction During Transport
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Solution Overview
Problem
Electronic devices used for tracking cargo during transport face high power consumption when automatically disabling cellular communication during takeoff and landing, due to frequent sensor data monitoring.
Innovation Solution
An electronic device equipped with a sensor system and logic that evaluates sensor data to detect the start of a specific mode of transport, switches states accordingly, obtains a predicted time of arrival, performs status checks at selected times, and switches back to the initial state upon arrival, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If autonomous function frequently monitors sensor data to detect takeoff and landing, then detection accuracy is improved, but power consumption increases
Solution Approach 1:
The system performs status checks at periodic intervals rather than continuously monitoring sensor data. The logic evaluates sensor data only at predetermined time points during the transport cycle, reducing power consumption while maintaining adequate detection capability for transport mode changes and arrival events.
Solution Approach 2:
The system obtains predicted time to arrival in advance and schedules status checks at selected time points based on this prediction. By preparing the monitoring schedule beforehand rather than continuously monitoring, the system reduces unnecessary sensor evaluations and conserves battery power while ensuring timely detection of arrival conditions.
2Reliability
If status checks are performed continuously near predicted arrival time, then arrival detection reliability is improved, but power consumption increases
Solution Approach 1:
The system performs status checks at periodic intervals rather than continuously. During the approach to predicted arrival time, the system checks at predetermined time points which provides sufficient reliability for detecting arrival while significantly reducing power consumption compared to continuous monitoring.
Solution Approach 2:
The system uses the predicted time to arrival information to automatically schedule its own status checks without external intervention. This self-service approach optimizes the balance between detection reliability and power consumption by checking at strategically selected moments rather than continuously.
Data Source
AI summary
An electronic device includes a sensor system and is configured to perform a control method to reduce the power consumption during transportation, for example by aircraft. According to the control method, the electronic device evaluates sensor data from the sensor system for detection of a first condition that indicates that a specific mode of transport of the electronic device has begun; switches the electronic device from a first state to the second state upon detection of the first condition; obtains a predicted time to arrival at a destination; performs a status check at a selected time point in relation to the predicted time of arrival, for detection of an arrival of the electronic device at the destination; and switches the electronic device from the second state to the first state upon detection of the arrival.