Sensor Array With Vibration-Proof Substrates For Multi-Signal Detection
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Solution Overview
Problem
Existing devices can only detect one type of physiological signal effectively and struggle to accurately detect signals with widely different amplitudes, such as body motion, breath, and heartbeat, especially when users are in varying states like sitting, standing, or moving, due to insufficient combinations of sensor elements, signal acquisition circuits, and vibration-proof materials, and potential force coupling between sensor units.
Innovation Solution
A signal acquisition sensor array comprising multiple types of sensor units with vibration-proof substrates and corresponding signal acquisition circuits, arranged in an array with varying sensitivities and sampling frequencies, to attenuate signals differently and eliminate strong force coupling, allowing for accurate detection of diverse physiological signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single type of sensor unit is used in the sensor array, then the device complexity is reduced, but the adaptability to detect different types of physiological signals with widely different amplitudes deteriorates
Solution Approach 1:
The sensor array is segmented into multiple types of sensor units (first sensor units, second sensor units, third sensor units) with different vibration-proof properties. Each type of sensor unit is specifically designed to detect certain types of physiological signals within specific amplitude ranges, enabling the system to handle signals with widely different amplitudes without requiring a single complex sensor design
Solution Approach 2:
Different regions of the sensor array have different local qualities through the use of sensor units with varying vibration-proof properties. The first sensor units have higher vibration-proof properties for detecting stronger signals, while the third sensor units have lower vibration-proof properties for detecting weaker signals, allowing each local region to be optimized for its specific detection task
2Measurement precision
If sensor units with different vibration-proof properties are used, then the measurement precision of physiological signals with different amplitudes is improved, but the device complexity increases
Solution Approach 1:
The vibration-proof properties of sensor units are varied as a key parameter across different sensor unit types. By changing this physical parameter systematically (with each type having different vibration-proof properties), the system achieves optimized detection precision for various signal amplitudes while maintaining a structured and manageable device architecture
Solution Approach 2:
The sensor array employs a composite structure combining multiple types of sensor units with different vibration-proof properties in a single array. This composite approach allows the system to leverage the strengths of each sensor unit type for different signal ranges, achieving high measurement precision across the full spectrum of physiological signal amplitudes
3Stability of the object's composition
If strong force coupling between sensor units exists, then the structural stability is improved, but the measurement precision of weak physiological signals deteriorates due to signal interference
Solution Approach 1:
The sensor array is divided into independently supported sensor units, each with its own vibration-proof substrate. This segmentation isolates the sensor units from strong force coupling with adjacent units, preventing signal interference while maintaining individual structural stability through dedicated vibration-proof substrates
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
Enables accurate detection of physiological signals with widely different amplitudes by attenuating signals to appropriate degrees and reducing force coupling, improving detection precision and reliability across different physiological parameters.
Implementation Method 1
each of the sensor units includes a first vibration-proof substrate; and a sensor element in one-to-one correspondence with the first vibration-proof substrate and is disposed between the first vibration-proof substrate and the connection layer
Implementation Method 2
the sensor elements of the at least two types of sensor units are arranged in an array at intervals on the connection layer... eliminate strong force coupling between the sensor units
Data Source
AI summary
A signal acquisition sensor array, an electronic device, and a mattress. The sensor array includes: a connection layer, at least two types of sensor units, a signal acquisition circuit, and a signal line electrically connecting the sensor units with the signal acquisition circuit, where each of the sensor units includes: a first vibration-proof substrate, and a sensor element in one-to-one correspondence with the first vibration-proof substrate and is disposed between the first vibration-proof substrate and the connection layer; and the at least two types of sensor units are arranged in an array at intervals on the connection layer. The solution enables different physiological signals having widely different signal amplitudes to be all accurately detected by the sensor array.