Barrier Status Detection Using Accelerometer and Gyroscope
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Solution Overview
Problem
Existing methods for determining the open/close status of barriers on moveable platforms, such as truck containers, face challenges due to changing orientations and the potential for wiring damage during rough handling, which complicates accurate detection and increases costs.
Innovation Solution
A sensor device mounted on the barrier, incorporating an accelerometer and a rotation sensor like a gyroscope, determines the open/close status by analyzing acceleration and rotation data, activating the gyroscope only when necessary to conserve power and avoid external wiring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external wiring is used to connect sensors to the barrier, then the barrier status can be detected, but the wiring is susceptible to damage during rough handling and increases installation complexity
Solution Approach 1:
The patent extracts the wiring requirement entirely by mounting the sensor device directly on the barrier itself. The barrier incorporates the sensor device as an integrated component, eliminating the need for external wiring connections between separate sensors and processing units. This direct integration removes the vulnerable wiring infrastructure while maintaining detection functionality.
Solution Approach 2:
The barrier serves itself by incorporating the sensor device as an integral part of its structure. The barrier's own movement and position changes are detected by the mounted sensor, eliminating the need for external wiring to transmit this information. The system uses the barrier's inherent motion characteristics for self-monitoring.
2Measurement precision
If the gyroscope is continuously activated to accurately detect barrier status, then detection precision is improved, but power consumption increases
Solution Approach 1:
The gyroscope operates periodically rather than continuously, being activated only when the accelerometer detects motion events that warrant barrier status verification. This intermittent operation maintains detection precision for actual barrier movements while significantly reducing overall power consumption during stationary periods.
Solution Approach 2:
The system applies partial action by using the accelerometer to perform initial screening of barrier movements, activating the more power-intensive gyroscope only when necessary. This selective activation provides sufficient detection precision for actual barrier status changes while avoiding excessive power consumption from continuous gyroscope operation.
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
This solution allows for reliable detection of barrier status regardless of orientation changes, reducing the need for external wiring and minimizing power consumption, thus enhancing operational efficiency and cost-effectiveness.
Implementation Method 1
A sensor device mounted on the barrier, incorporating an accelerometer and a rotation sensor like a gyroscope, determines the open/close status by analyzing acceleration and rotation data
Implementation Method 2
A sensor device mounted on the barrier, incorporating an accelerometer and a rotation sensor like a gyroscope, determines the open/close status by analyzing acceleration and rotation data
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
In some examples, a sensor device is to mount to a barrier pivotable between an open position and a closed position, the barrier being on a moveable platform. The sensor device includes an accelerometer to measure acceleration data and a rotation sensor to measure rotation about an axis. The sensor device includes at least one processor configured to determine an open/close status of the barrier based on the acceleration data and the rotation data, and an orientation of the moveable platform.