Wireless Cargo Controller Orientation Calibration in Aircraft Holds
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Solution Overview
Problem
The orientation of wireless cargo devices within cargo compartments of aircraft changes frequently, causing confusion for operators regarding the necessary commands to move cargo in a particular direction.
Innovation Solution
A mobile cargo controller equipped with an inertial measurement unit (IMU) and a magnetometer determines a frame of reference by continuously comparing its orientation to a fixed device in the cargo compartment, such as a magnetometer or a molded pocket, allowing it to track its position relative to the compartment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a wireless cargo device is moved freely around the cargo compartment, then operator flexibility and mobility are improved, but the device orientation becomes constantly changing causing operator confusion
Solution Approach 1:
The system continuously provides feedback to the operator about the device's orientation relative to the cargo compartment using sensors (accelerometers, gyroscopes, magnetometers) and displays this information on the user interface. This allows the operator to understand the current orientation and select appropriate commands even when moving freely around the compartment.
Solution Approach 2:
The patent introduces an intermediary reference frame system that mediates between the device's local coordinate system and the cargo compartment's global coordinate system. This reference frame acts as a translator, converting orientation data into meaningful directional information (forward, backward, left, right) relative to the cargo compartment, eliminating operator confusion.
2Adaptability or versatility
If the wireless cargo device is made mobile and repositionable, then operational versatility is improved, but establishing and maintaining a stable frame of reference becomes more difficult
Solution Approach 1:
The system dynamically adapts the frame of reference based on the device's current position and orientation. Rather than using a fixed reference, the system continuously updates the reference frame to maintain stability and accuracy, allowing the device to move freely while preserving a stable operational context through real-time sensor data and coordinate transformations.
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
Establishes a stable frame of reference, enabling operators to accurately determine the necessary commands for cargo movement despite changing orientations, enhancing operational efficiency.
Implementation Method 1
at least one inertial measurement unit configured to identify a true forward position of a cargo compartment
Implementation Method 2
at least one inertial measurement unit configured to determine an orientation of the mobile cargo controller
Implementation Method 3
the identification of the true forward position of the cargo compartment is identified by a magnetometer associated with the cargo compartment
Data Source
AI summary
A mobile cargo controller for a cargo handling system is provided. The mobile cargo controller includes at least one inertial measurement unit configured to: identify a true forward position of a cargo compartment in which the cargo handling system operates, determine an orientation of the mobile cargo controller, and, using the true forward position of the cargo compartment and the orientation of the mobile cargo controller, identify a frame of reference for the mobile cargo controller within the cargo compartment.