Motion Detection Sensor Unit with Audible State Announcement

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Solution Overview

Problem

Existing motion detection devices for sports equipment analysis face challenges in accurately determining the bias of angular velocity sensors, leading to potential deviations in swing analysis due to visual line deviations and lack of convenience in monitoring the motion detection process.

Innovation Solution

A sensor unit with an announcement section that informs the user about the state of the output signal, allowing the test object to sense the signal without losing posture, and includes features like threshold determinations and multi-modal announcements (light, sound, vibration) to enhance motion detection reliability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the test object visually checks the display device to confirm bias value determination, then the origin of motion can be determined, but the visual line deviation causes unreliable motion detection

Engineering Contradiction:

Improvebias value determination accuracyVSAvoidmotion detection reliability

Core Design Contradiction:

Measurement precisionVSReliability

Solution Approach 1:

The patent replaces the visual checking mechanism with an auditory announcement system. The announcement section outputs sound signals that indicate when the bias value determination is complete, allowing the test object to start motion without visual verification. This substitution eliminates visual line deviation issues while maintaining accurate bias determination.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The announcement section acts as an intermediary between the bias determination process and the test object. Instead of directly requiring visual contact with the display device, the announcement section mediates by providing auditory feedback that signals readiness, thereby decoupling the bias determination accuracy from visual line requirements.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If other people check the display device and start motion by voice sign, then convenience is improved, but the system becomes more complex and less autonomous

Engineering Contradiction:

Improvemotion start convenienceVSAvoidsystem operation complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The test object independently determines when to start motion by listening to the announcement section's auditory signals indicating bias determination completion. This self-service approach eliminates the need for external operators to monitor the display or provide voice cues, thereby improving convenience while actually reducing system complexity compared to multi-person coordination protocols.

Inventive Principle:

Principle #25Self-service

3Loss of information

If the announcement section provides continuous feedback, then the test object can accurately sense the device state, but energy consumption increases

Engineering Contradiction:

Improvedevice state information accuracyVSAvoidannouncement section energy consumption

Core Design Contradiction:

Loss of informationVSUse of energy by moving object

Solution Approach 1:

The announcement section provides periodic auditory feedback at critical moments (when bias determination is complete and ready for motion start) rather than continuous feedback. This periodic action maintains accurate device state information transmission while significantly reducing energy consumption compared to continuous operation.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS9643069B2Sensor unit and motion detection device

Publication Date: 2017.05.09 SEIKO EPSON CORP

AI summary

A sensor unit includes a sensor section adapted to detect a motion, and an announcement section adapted to announce a state of an output signal of the sensor section.