Conductive Adhesive Damping for Sensor Signal Quality
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Solution Overview
Problem
Existing sensors for measuring acceleration or rotation rate are susceptible to interference from external vibrations or frequencies, which can impair their measuring function, especially in applications requiring high signal quality and limited installation space, where additional damping or shielding measures are not feasible.
Innovation Solution
Incorporating an elastic damping element with conductive adhesive properties between the sensor element and the circuit board, which acts as a damped spring-mass system, effectively decoupling the sensor from external influences and allowing for electrical and mechanical contact, thereby reducing interference and eliminating the need for separate damping or shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If additional damping or shielding measures are implemented, then signal quality is improved, but device complexity and installation space requirements increase
Solution Approach 1:
The patent combines the electrical connection function and the damping function into a single integrated component. The conductive adhesive layer serves dual purposes: it provides electrical contact between the sensor element and the circuit board while simultaneously acting as a damping element to reduce external vibrations and interfering frequencies. This eliminates the need for separate damping measures and shielding components.
Solution Approach 2:
The conductive adhesive layer is designed to perform multiple functions simultaneously: electrical conduction, mechanical bonding, and vibration damping. By making the adhesive layer conductive and elastic, it becomes a multi-functional component that replaces what would traditionally require separate elements for each function, thereby reducing overall device complexity.
2Measurement precision
If additional damping or shielding measures are implemented, then signal quality is improved, but installation space requirements increase
Solution Approach 1:
The patent combines the electrical connection function and the damping function into a single integrated component. The conductive adhesive layer serves dual purposes: it provides electrical contact between the sensor element and the circuit board while simultaneously acting as a damping element to reduce external vibrations and interfering frequencies. This eliminates the need for separate damping measures and shielding components.
3Object-affected harmful factors
If the sensor is decoupled from the circuit board, then interference damping is improved, but electrical and mechanical contacting becomes more complex
Solution Approach 1:
The conductive adhesive layer acts as an intermediary element between the sensor element and the circuit board. It provides a compliant interface that mechanically decouples the sensor from vibrations in the circuit board while maintaining electrical contact. The adhesive layer's elasticity allows it to absorb vibration energy, and its conductivity ensures signal transmission without requiring additional decoupling components.
4Object-affected harmful factors
If separate damping measures are implemented for the housing and circuit board, then interference protection is improved, but manufacturing costs increase
Solution Approach 1:
The patent combines the electrical connection function and the damping function into a single integrated component. The conductive adhesive layer serves dual purposes: it provides electrical contact between the sensor element and the circuit board while simultaneously acting as a damping element to reduce external vibrations and interfering frequencies. This eliminates the need for separate damping measures and shielding components.
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 solution enhances signal quality by damping external interference, reduces manufacturing costs, and allows for flexible installation options without additional damping measures, making it suitable for safety-relevant vehicle systems with limited space.
Implementation Method 1
at least one elastic damping element which dampens external interfering vibrations or interfering frequencies and has means for making electrical and / or mechanical contacting of the sensor element
Implementation Method 2
a sensor can be implemented which is designed as a damped spring-mass system which comprises at least one elastic damping element and the sensor element
Implementation Method 3
the at least one elastic damping element is designed as a conductive adhesive connection which has a predetermined viscosity and / or ductility
Data Source
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AI summary
The invention relates to a sensor (10) comprising a sensor element (12) for measuring a physical variable. According to the invention, at least one elastic damping element (14) is provided which damps external interfering vibrations and which has means (14.1) for electrically and/or mechanically contacting the sensor element (12).