Sensor Controller Transit Motion State Transition
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Challenges exist in determining when to awaken sensor devices from a sleep state to an operational state for accurate tracking of assets being transported, as missed measurements can occur if the sensor devices are not activated during relevant events.
Innovation Solution
A sensor device mounted on a moveable platform uses a controller to determine transit motion based on acceleration data, transitioning from a sleep state to an operational state upon detecting transit events such as door openings or motion, and periodically activating components to conserve power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If sensor devices remain in sleep state to conserve power, then battery life is extended, but measurements may be missed during relevant transit events
Solution Approach 1:
The system performs preliminary action by detecting transit events (door openings, motion) before the sensor device needs to take measurements. The controller monitors for these events and triggers the sensor activation in advance, ensuring measurements are captured during relevant events while maintaining sleep state otherwise to conserve battery power.
2Measurement precision
If sensor devices are activated continuously to ensure accurate tracking, then measurement accuracy is improved, but power consumption increases
Solution Approach 1:
The system implements periodic action by activating the sensor device only during specific periods when transit events occur, rather than maintaining continuous operation. The controller periodically checks for transit events (door openings, motion detected by accelerometer) and activates sensors only during these periods, achieving accurate tracking while significantly reducing overall power consumption compared to continuous operation.
3Reliability
If the sensor device transitions to operational state upon detecting transit motion, then data integrity is maintained, but unnecessary activations may occur
Solution Approach 1:
The system uses feedback mechanisms where the controller continuously monitors multiple sensor inputs (accelerometer data, door switch status) and adjusts sensor activation based on this feedback. The accelerometer provides feedback about actual motion versus expected motion patterns, allowing the controller to distinguish between genuine transit events requiring measurement and false positives, thereby maintaining data integrity while avoiding unnecessary activations and power waste.
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
Ensures accurate and efficient tracking of assets by activating sensor devices only during necessary transit events, thereby extending battery life and maintaining data integrity.
Implementation Method 1
an accelerometer to produce acceleration data indicative of acceleration of the sensor device
Data Source
Figure 1~3
Figure 2A~2B
Figure 4~6
AI summary
In some examples, a controller receives, from a sensor that is part of a device mounted on a moveable platform, measurement data. The controller detects, based on the measurement data, a change in transit motion status of the moveable platform. The controller triggers, in response to detecting the change in transit motion status of the moveable platform, a transition of the device from a first power state to a second, different power state.