Wireless Device Displacement Detection for Airplane Mode Switching
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Solution Overview
Problem
Existing wireless device management methods struggle to accurately detect when a wireless device is not on an airplane in operation, leading to challenges in switching communication modes to overcome severe constraints on communication output power.
Innovation Solution
A wireless device equipped with a sensor unit to measure displacement, a transmitter to send signals, and a controller that adjusts communication modes based on pre-stored displacement conditions and history, switching to high output power mode when it is determined the device is not on an airplane.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wireless device uses high output power mode to overcome communication constraints, then communication reliability is improved, but it may interfere with airplane travelling operations
Solution Approach 1:
The wireless device dynamically switches between low output power mode and high output power mode based on real-time detection of airplane operation status. The controller adjusts transmission power levels according to whether the device is on an operating airplane or not, optimizing communication reliability while preventing interference during critical flight phases
Solution Approach 2:
The sensor unit continuously monitors displacement and provides feedback to the controller to detect airplane operation status. Based on this feedback information, the controller automatically adjusts the transmitter output power, creating a closed-loop control system that resolves the contradiction between communication needs and interference prevention
2Object-affected harmful factors
If the wireless device switches to low output power mode during airplane operation, then interference with travelling operations is prevented, but communication reliability deteriorates
Solution Approach 1:
The system dynamically adjusts power output based on detected operation status. When the sensor unit detects that the airplane is not operating (through displacement analysis), the controller switches to high output power mode to ensure reliable communication without maintaining unnecessary power restrictions
3Measurement precision
If the wireless device accurately detects airplane operation status, then appropriate mode switching is achieved, but device complexity increases
Solution Approach 1:
The wireless device uses its own motion characteristics (displacement data from sensor unit) to detect airplane operation status without requiring external detection systems. This self-service approach achieves accurate detection while minimizing additional device complexity
Solution Approach 2:
The system replaces complex mechanical or electronic vibration sensors with displacement measurement analysis. By analyzing displacement history and patterns from the sensor unit, the controller can determine airplane operation status through software processing rather than additional hardware complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the wireless device to appropriately switch communication modes, ensuring stable communication while adhering to output power constraints, thereby improving logistics tracking system efficiency.
Implementation Method 1
a sensor unit configured to measure a displacement of the wireless device
Data Source
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AI summary
Wireless device capable of appropriately switching communication mode by detecting it to be not loaded on airplane, and logistics tracking system are provided. Wireless device is mobile wireless device including: sensor unit for measuring wireless device displacement; transmitter for transmitting signal including wireless device-related information; storage for pre-storing predetermined displacement condition and storing displacement history measured by sensor unit; and controller for controlling transmitter's communication mode based on storage-stored predetermined displacement condition and displacement history. Controller controls transmitter's communication mode to either low output power mode, for restricting signal transmission output power of transmitter to predetermined value or lower, or high output power mode, for increasing signal transmission output power of transmitter to be higher than predetermined value, and when it is definitely determined that wireless device is not loaded on airplane based on predetermined displacement condition and displacement history, sets transmitter's communication mode to high output power mode.