Adaptive Ranging Control for Low-Power Distance Measurement
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Solution Overview
Problem
The increasing number of ranging process executions leads to higher electric power consumption while attempting to improve accuracy in measuring distances between devices, which is inefficient and costly.
Innovation Solution
A control device and non-transitory storage medium that execute a ranging process a designated number of times and control subsequent processes based on whether acquired ranging values satisfy a designated allowable value, allowing for the cancellation of subsequent ranging processes when a valid value is obtained, thereby reducing unnecessary power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the ranging process is executed multiple times to improve accuracy, then measurement precision is improved, but electric power consumption increases
Solution Approach 1:
The control device dynamically adjusts the number of ranging process executions based on the variability of acquired ranging values. When ranging values show high variability (standard deviation exceeds threshold), the system executes additional ranging processes to improve accuracy. When variability is low, the system reduces the number of executions to conserve power, thus adapting the measurement process to actual conditions rather than using a fixed number of executions
Solution Approach 2:
The control device implements a feedback mechanism where it continuously monitors the standard deviation of acquired ranging values and uses this information to determine whether to continue executing ranging processes. The feedback loop compares the variability of measurements against a threshold and adjusts the number of executions accordingly, ensuring that power consumption is optimized while maintaining measurement accuracy within acceptable bounds
Data Source
AI summary
A control device including a control section configured to cause a ranging process of measuring a distance between communication devices to be executed a designated number of times, and control a subsequent process that is a process of using a ranging value that satisfies a designated allowable value, on a basis of whether or not at least any of a plurality of ranging values that have been acquired satisfies the designated allowable value. The control section controls start of the subsequent process when the ranging value that satisfies the designated allowable value is acquired.