Sensor Background Noise Transmission for Data Reliability Checks

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Solution Overview

Problem

Existing sensor devices transmit sensing data unidirectionally, making it unknown to users if the device has moved from its installation position, potentially leading to unreliable data distribution between providers and users.

Innovation Solution

Incorporating a sensor device with a sensor unit, an extraction unit to isolate background noise data, and a transmission unit to send this data to an external device, allowing analysis of the device's state and thus assessing the reliability of the sensing data.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If sensor device transmits sensing data unidirectionally to external device, then data transmission is simple and efficient, but user cannot determine reliability of sensing data when device state changes

Engineering Contradiction:

Improvedata transmission efficiencyVSAvoidsensing data reliability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The sensor device transmits background noise data back to the external device, creating a feedback mechanism. The external device analyzes this background noise to determine device state (normal or abnormal) and thus assess sensing data reliability, resolving the contradiction by enabling reliability verification without compromising transmission efficiency

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

Background noise data serves as an intermediary indicator that indirectly reflects device state. Instead of directly transmitting device state information or position data, the system uses background noise characteristics as a mediator to infer reliability, maintaining simple unidirectional transmission while enabling reliability assessment

Inventive Principle:

Principle #24Intermediary (Mediator)

2Quantity of substance

If sensor device does not transmit device state information, then transmission data volume is small and bandwidth consumption is low, but user cannot verify if device is at correct installation position

Engineering Contradiction:

Improvetransmission data volumeVSAvoiddevice state information

Core Design Contradiction:

Quantity of substanceVSLoss of information

Solution Approach 1:

Background noise data acts as an indirect intermediary that conveys device state information without directly transmitting position or state parameters. By analyzing changes in background noise characteristics, the external device can infer whether the sensor has moved from its installation position, thus preventing information loss while keeping data volume small

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces direct mechanical position reporting with acoustic/environmental background noise analysis. Instead of transmitting position coordinates or device status flags, the system uses background noise patterns as a substitute indicator of device location and state, reducing data transmission requirements

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS11758307B2Sensor device, background noise data transmission method, and background noise data transmission program

Publication Date: 2023.09.12 OMRON CORP

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.