Wearable Sensor Glove for Accurate Connector Fitting Detection
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Solution Overview
Problem
Existing methods for detecting work contents in manufacturing, such as using microphones and acceleration sensors, face challenges in accurately distinguishing fitting operations from other hand movements due to similar acceleration and sound patterns, leading to difficulties in determining the correct fitting state of connectors.
Innovation Solution
A wearable sensor glove equipped with a microphone, pressure sensor, and motion sensor that transmits sound, pressure, and motion signals to a receiving unit for analysis, allowing for precise detection of work content through the determination unit, which notifies the worker of the correct fitting state in real time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple sensors (microphone and acceleration sensor) are used to detect work content, then detection accuracy is improved, but false detection increases due to similar patterns from various hand movements
Solution Approach 1:
The patent introduces a pressure sensor to detect pressure parameters during hand operations. By adding this new detection parameter (pressure) alongside existing sound and acceleration parameters, the system can distinguish between different work contents more reliably. The pressure information provides additional discrimination capability that helps differentiate fitting operations from other hand movements, thereby reducing false detections while maintaining high detection accuracy.
2Productivity
If acceleration sensors continuously monitor hand movements, then work efficiency is improved through real-time detection, but detection accuracy deteriorates due to noise from unexpected collisions and various hand movements
Solution Approach 1:
The pressure sensor acts as an intermediary element that mediates between the continuous acceleration data and the final detection decision. By introducing pressure information as an intermediate verification parameter, the system can filter out false positives from acceleration data caused by unexpected collisions or irrelevant hand movements. The pressure sensor provides additional confirmation that helps distinguish genuine fitting operations from other activities, thereby maintaining high work efficiency while improving detection accuracy.
3Device complexity
If only sound information is used for detection, then device complexity is reduced, but detection reliability worsens in environments with similar sounds from various operations
Solution Approach 1:
The patent merges multiple detection parameters (sound, acceleration, and pressure) into a comprehensive detection system. By combining these different types of information, the system overcomes the limitations of using sound alone. The pressure sensor adds a new dimension to the detection that is less prone to ambiguity in noisy acoustic environments, thereby significantly improving detection reliability while maintaining practical device complexity through integrated sensor design.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system enables high-accuracy detection of work content, reducing defects by accurately determining the fitting state of connectors and allowing immediate correction of errors, enhancing work efficiency.
Implementation Method 1
a microphone detecting a work sound of a hand operation
Implementation Method 2
a pressure sensor detecting a pressure of a work of the hand operation
Implementation Method 3
a motion sensor detecting a motion of the hand operation
Data Source
AI summary
A work detection determination system performs detection determination on a work with high accuracy.The work detection determination system includes a glove that is worn on a hand of a worker and includes a microphone detecting a work sound of a hand operation in which the hand works on a work target through a contact of the hand with the work target, a pressure sensor detecting a pressure of a work of the hand operation, a motion sensor detecting a motion of the hand operation, and a transmitting unit transmitting a sound signal of the microphone, a pressure signal of the pressure sensor, and a motion signal of the motion sensor; a receiving unit that receives the sound signal, the pressure signal, and the motion signal transmitted from the transmitting unit; a work determination unit that performs detection determination of a work content of the worker by using the sound signal, the pressure signal, and the motion signal; and a notification unit that notifies a determination result of the work determination unit.