Ferroelectric Multi-Effect Sensor for Unified Machine Detection
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Solution Overview
Problem
The installation of multiple sensor types with different physical effects in machines is costly and complex, requiring separate drive and evaluation electronics, as well as additional testing, which increases the overall system size and complexity.
Innovation Solution
A sensor design that combines pyroelectric, piezoelectric, and capacitive effects using a ferroelectric layer between two electrodes, allowing for the detection of temperature changes, deformations, and object proximity through a single sensor system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple sensor types with different physical effects are installed in machines, then detection coverage and reliability are improved, but system complexity and cost increase
Solution Approach 1:
The patent combines multiple sensor types (capacitive, piezoelectric, and pyroelectric sensors) into a single integrated sensor unit. This merging approach maintains comprehensive detection capabilities across different ranges (contactless, close-range, and contact detection) while reducing the number of separate components, drive electronics, and evaluation systems required, thereby lowering overall system complexity and cost.
Solution Approach 2:
The integrated sensor serves multiple functions simultaneously: it acts as a capacitive sensor for contactless detection, a piezoelectric sensor for deformation-based detection, and a pyroelectric sensor for temperature-based detection. This multi-functionality allows a single sensor system to replace multiple specialized sensors, improving reliability without proportionally increasing complexity.
2Adaptability or versatility
If multiple sensor types with different physical effects are installed in machines, then detection coverage is improved, but the number of drive and evaluation electronics increases
Solution Approach 1:
The patent merges the drive and evaluation electronics for capacitive, piezoelectric, and pyroelectric sensing into a single integrated electronic system. This unified electronics architecture controls and processes signals from all three sensor mechanisms within one unit, eliminating the need for separate electronics modules for each sensor type and thereby reducing overall electronics complexity while maintaining versatile detection coverage.
3Loss of information
If multiple sensor types with different physical effects are installed in machines, then environmental monitoring capability is improved, but system cost increases
Solution Approach 1:
The patent combines capacitive, piezoelectric, and pyroelectric sensor elements into a single integrated structure that can be deployed as one component rather than three separate systems. This merging reduces material costs, installation costs, and maintenance costs while providing comprehensive environmental monitoring across multiple physical parameters (electrical capacitance, mechanical deformation, and temperature changes).
Solution Approach 2:
The integrated sensor provides universal environmental monitoring by simultaneously detecting various physical phenomena through its multiple sensing mechanisms. This multi-functionality allows a single sensor system to replace multiple specialized sensors, thereby reducing the total cost of system deployment while maintaining comprehensive environmental information gathering capabilities.
4Measurement precision
If multiple sensor types with different physical effects are installed in machines, then detection accuracy is improved, but testing and validation requirements increase
Solution Approach 1:
The patent merges the testing and validation processes for capacitive, piezoelectric, and pyroelectric sensor elements into a unified testing protocol for the integrated sensor system. This consolidated approach allows simultaneous or coordinated testing of all three sensing mechanisms through a single validation framework, reducing the total number of separate test procedures required while maintaining high detection accuracy across all sensing modalities.
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
This multi-effect sensor reduces the need for multiple sensor types, simplifies electronics, and provides a more comprehensive environmental overview, enhancing detection accuracy and reducing system complexity and cost.
Implementation Method 1
The layer may preferably consist of a ferroelectric material with pyroelectric properties... With the pyroelectric effect, temperature changes which originate from the environment can be registered
Implementation Method 2
the layer may preferably consist of a ferroelectric material with piezoelectric properties... the piezoelectric effect in relation to any deformation of the sensor
Implementation Method 3
Since one of the electrodes is grounded, a close approach or touching of the electrode can change the capacitance between the electrode and the approaching object
Data Source
AI summary
In embodiments a sensor includes a carrier material and an insulation layer.