MEMS Sensor Conductive Layer Structure for Temperature and Noise Stability
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Solution Overview
Problem
Existing sensors using MEMS elements face challenges in achieving stable and accurate detection due to environmental temperature fluctuations and noise interference.
Innovation Solution
A sensor design incorporating a conductive layer with specific structural configurations, including conductive regions and gaps, to stabilize temperature and suppress noise, along with a controller for precise electrical resistance detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional sensor structure is used, then the device complexity is low, but the measurement precision deteriorates due to temperature fluctuations and noise interference
Solution Approach 1:
The sensor structure is segmented into distinct functional regions: a first region with a first conductive type and a second region with a second conductive type. This segmentation allows each region to perform specific functions (e.g., one region for detection, another for temperature compensation), thereby improving measurement precision while maintaining manageable device complexity through modular design.
Solution Approach 2:
Different regions of the sensor are assigned different local qualities in terms of conductive type and structural characteristics. The first region and second region have different conductive properties that are optimized for their specific roles, enabling localized optimization of detection accuracy and noise suppression without requiring complete redesign of the entire sensor structure.
2Measurement precision
If environmental temperature fluctuations are present, then the device operates in real-world conditions, but the measurement precision deteriorates
Solution Approach 1:
The sensor utilizes changes in electrical resistance parameters of the first and second conductive regions in response to temperature fluctuations. By monitoring and comparing resistance changes in both regions, the system can distinguish between temperature-induced resistance changes and those caused by target detection, thereby maintaining measurement precision despite environmental temperature variations.
Solution Approach 2:
The dual-conductive-type structure provides inherent feedback mechanisms where the interaction between the first and second regions allows the system to sense and compensate for temperature effects. The resistance characteristics of one region can serve as a reference to correct measurements from the other region, enabling real-time compensation for thermal drift.
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 design enables highly accurate and stable detection of environmental parameters by minimizing temperature and noise influences, allowing for improved detection accuracy and uniformity.
Implementation Method 1
a first conductive layer fixed to the base, the first conductive layer including a first conductive region and a first other conductive region
Implementation Method 2
the first element includes a first resistance member and a first conductive member
Data Source
AI summary
According to one embodiment, a sensor includes a base, a first detection section, a first conductive layer, and a first conductive layer terminal. The base includes a first base region including a first intermediate region. The first conductive layer is fixed to the base. The first conductive layer includes a first conductive region and a first other conductive region. The first conductive layer terminal is electrically connected to the first conductive layer. The first detection section includes a first fixed portion fixed to the first base region, and a first element supported by the first fixed portion. The first element includes a first resistance member and a first conductive member. A first gap is provided between the first intermediate region and the first element in the first direction.