Sensor Measurement Transmission Adaptation
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Solution Overview
Problem
Current sensor measurement transmission methods, relying on fixed thresholds and intervals, often lead to inefficient data transmission, either overloading sensors with frequent measurements or causing user distrust due to outdated data, and are not easily adaptable to varying physical quantities.
Innovation Solution
A method where the threshold and interval for measurement transmission are dynamically determined based on previous measurement points within a sliding collection window, adjusting the waiting period based on the direction coefficient of a straight line between measurement points to optimize data transmission and sensor autonomy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed detection threshold is used for measurement transmission, then the sensor operation is simplified, but the reliability of measurement transmission deteriorates because measurements may be lost or transmitted too frequently
Solution Approach 1:
The patent applies dynamics by transforming the static fixed threshold into a dynamic adaptive threshold. The threshold is automatically adjusted based on the statistical characteristics (standard deviation) of recent measurements, allowing the system to adapt to varying measurement conditions without manual intervention. This resolves the contradiction by maintaining operational simplicity while improving transmission reliability through automatic adaptation to measurement variability.
Solution Approach 2:
The patent implements self-service by enabling the sensor system to automatically configure its own transmission parameters. The microcontroller calculates the adaptive threshold and measurement interval based on local statistical analysis of measurements, eliminating the need for external configuration or manual tuning. This self-configuration capability simultaneously simplifies operation and ensures reliable transmission by adapting to actual measurement conditions.
2Ease of operation
If a fixed measurement interval is used for transmission, then the sensor operation is simplified, but the reliability deteriorates because the interval may not suit the physical quantity observed
Solution Approach 1:
The patent applies dynamics by replacing the fixed measurement interval with a dynamic adaptive interval. The interval is automatically adjusted based on the statistical characteristics of recent measurements, allowing the system to respond appropriately to different physical quantities and their rates of change. This resolves the contradiction by maintaining operational simplicity while ensuring timely measurements through automatic adaptation.
Solution Approach 2:
The patent implements self-service by enabling the sensor to automatically determine its own measurement interval based on local statistical analysis. The microcontroller calculates the adaptive interval using the standard deviation of recent measurements, eliminating external configuration needs. This self-configuration ensures both operational simplicity and measurement timeliness by adapting to the specific physical quantity being observed.
3Reliability
If a low detection threshold and measurement interval are used, then measurement reliability is improved, but sensor autonomy deteriorates due to frequent measurements
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the transmission threshold and measurement interval based on the statistical characteristics of measurements. When measurements are stable (low standard deviation), the threshold increases and interval extends, reducing transmission frequency and conserving energy. When measurements vary significantly (high standard deviation), the threshold decreases and interval shortens, improving reliability. This adaptive parameter adjustment resolves the contradiction between reliability and energy consumption.
4Use of energy by moving object
If a high detection threshold and measurement interval are used, then sensor autonomy is improved, but measurement reliability deteriorates due to potential loss of significant variations
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting transmission parameters based on measurement variability. The adaptive threshold and interval are calculated using the standard deviation of recent measurements, ensuring that significant variations are captured while avoiding unnecessary transmissions during stable periods. This resolves the contradiction by maintaining energy efficiency while preserving measurement reliability through context-aware parameter adjustment.
Data Source
Figure 1~2A
Figure 2B~3
AI summary
The invention relates to a method for transmitting a measurement taken by a sensor at a current measurement time, a measurement time, and a measurement forming a measurement point. This method comprises: - determining (E2) a threshold from measurement points preceding the current measurement point in time on a data collection window; - when a slope of a line passing through the current measurement point and the immediately preceding measurement point is greater than the threshold, transmitting the measurement after a waiting period corresponding to the minimum time interval between two successive measurement times on the data collection window; - when said slope is less than the threshold, transmitting the measurement after a waiting period corresponding to the maximum time interval between two successive measurement times on the data collection window.