Thermal Sensor Vibration Damping via Intermediary Material
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Solution Overview
Problem
Conventional thermal sensors fail at high vibration levels, especially when combined with excessive thermal loads, due to their geometric arrangement and lack of effective vibrational damping, making them unsuitable for harsh environments like aerospace or off-road vehicle applications.
Innovation Solution
Incorporation of a vibrational damping material, such as sand or porous damper grains with specific shapes and sizes, within the sensor housing to absorb and dissipate vibrational forces, allowing sensor components to move freely while maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional thermal sensors are used with free air volume for micro-movements, then the sensors can respond to thermal excitation, but they fail at high vibration levels combined with excessive thermal loads
Solution Approach 1:
A vibrational damping material is introduced as an intermediary substance between the sensor component and the housing. This material absorbs and dissipates vibrational energy, protecting the sensor component from vibrational damage while allowing necessary micro-movements for thermal response
Solution Approach 2:
The vibrational damping material is pre-positioned within the housing to provide cushioning protection before vibrational damage can occur. This proactive approach ensures the sensor component is protected from high vibration levels before they cause failure
2Reliability
If vibrational damping material is added to protect sensor components, then vibrational tolerance is enhanced, but device complexity increases
Solution Approach 1:
The vibrational damping material has a porous structure that allows it to absorb vibrational energy effectively while maintaining a relatively simple form factor. The porosity enables the material to dissipate vibrations through friction and energy conversion without requiring complex mechanical structures
Solution Approach 2:
The vibrational damping material changes the physical parameters of the housing assembly by introducing a material with specific damping properties. This simple parameter change (adding a damping material) provides significant vibrational protection without fundamentally redesigning the entire housing structure
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
Enhances the vibrational tolerance of thermal sensors, preventing damage from high vibrations and thermal loads, and maintaining functionality in extreme conditions without significant weight addition.
Implementation Method 1
A vibrational damping material is disposed within the space to dampen vibration of the sensor component(s) relative to the housing
Data Source
Figure 1~4
AI summary
A sensor (100) includes a housing (101), at least one sensor component (103) disposed within the housing such that there is space between the housing and the sensor component, and a vibrational damping material (104) disposed within the space to dampen vibration of the sensor components relative to the housing. The sensor (100) can be a thermal sensor. For example, the thermal sensor can be a linear thermal detector, an optical flame detector, or any other suitable type of sensor or combination of sensors.