Background Noise Extraction for Sensor Data Reliability
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Solution Overview
Problem
Existing sensor devices transmit sensing data unidirectionally, making the state of the sensor device unknown to the user, which can result in unreliable data distribution as the device may have changed location or environment, leading to inaccurate measurement characteristics.
Innovation Solution
A sensor device that includes a sensor unit generating sensing data with background noise, an extraction unit to isolate this noise, and a transmission unit to send the background noise data to an external device, allowing analysis of the sensor's state and determining the reliability of the sensing data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensor device transmits sensing data unidirectionally, then data distribution is simple, but reliability of sensing data cannot be determined
Solution Approach 1:
The patent extracts background noise data from sensing data as a separate component. The extraction unit isolates background noise representing sensor state from the total sensing data, allowing independent analysis of sensor condition without affecting the main sensing function. This enables reliability assessment through noise analysis while maintaining the original sensing capability.
Solution Approach 2:
The patent implements feedback by transmitting background noise data back to the external device (provider or user). The transmission unit sends extracted background noise data externally, creating a feedback loop that enables the receiving party to assess sensor reliability and determine whether to trust or use the sensing data based on the noise characteristics.
2Loss of information
If sensor device monitors only measurement target, then measurement precision is high, but sensor state information is lost
Solution Approach 1:
The patent segments sensing data into two distinct components: signal representing measurement target characteristics and background noise representing sensor state. The extraction unit separates these components, allowing independent analysis of each. This segmentation enables simultaneous monitoring of both measurement target and sensor condition without interference.
Solution Approach 2:
The patent applies local quality by treating different parts of the sensing data differently. The signal portion is optimized for measurement precision while the background noise portion is optimized for state monitoring. Each component is processed and transmitted according to its specific purpose, with background noise specifically extracted for reliability assessment.
Data Source
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AI summary
A sensor device transmits, to an external device installed external to the sensor device, sensing data generated from monitoring a target, and includes a sensor unit that generates sensing data including background noise data. The background noise data represents noise from a cause other than the target. The sensor device further includes an extraction unit that extracts the background noise data from the sensing data, and a transmission unit that transmits the background noise data extracted by the extraction unit to the external device.