Rotating Sensor Housing Venting for Passive Cooling
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Solution Overview
Problem
The buildup of heat within sensor housings due to trapped solar heat and internal component operation adversely affects the performance and longevity of sensors in vehicles, leading to sub-optimal temperature conditions.
Innovation Solution
A system utilizing a rotating sensor housing with strategically positioned main and side vents, guide blades, and contoured blades to create a convective airflow that pulls cool air in and directs heated air out, effectively dissipating heat without the need for fans or additional power sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sensor housing is used to protect internal sensor components from debris and contaminants, then the sensor components are protected from environmental damage, but the housing traps solar heat and internal component heat, causing sub-optimal temperature conditions
Solution Approach 1:
The housing is segmented with multiple vents (intake vents and exhaust vents) positioned at different locations, creating separate pathways for air entry and exit. This segmentation allows the housing to simultaneously maintain structural protection and enable thermal management through controlled airflow paths.
Solution Approach 2:
Air acts as an intermediary substance that transfers heat from the sensor components to the external environment. The cooling system uses air flow as a mediator to carry away trapped heat while the housing continues to provide physical protection, resolving the contradiction between protection and thermal management.
2Temperature
If traditional cooling methods using fans or additional power sources are used, then heat dissipation is effective, but noise increases and potential failure points are added
Solution Approach 1:
The cooling system is self-service in that it uses the rotation of the sensor housing itself to drive the cooling airflow. The housing rotation, which is necessary for sensor operation, automatically creates the air intake and exhaust flow needed for cooling, eliminating the need for separate fans or power sources while maintaining effective heat dissipation.
Solution Approach 2:
The rotating housing serves multiple functions: it enables the sensor to scan the environment (primary function) and simultaneously drives the cooling airflow (secondary function). This multi-functionality eliminates the need for dedicated cooling components, reducing device complexity while maintaining effective heat dissipation.
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
Efficient heat dissipation is achieved, preventing sensor degradation and overheating, while reducing noise and potential failure points by using natural airflow to cool internal components.
Implementation Method 1
the rotation of the sensor housing pulls air into an interior portion of the sensor housing through the main vent, and wherein the air pulled into the interior portion of the sensor housing is exhausted out of the sensor housing through the side vent
Implementation Method 2
the one or more guide blades are configured to force the air pulled into the interior portion of the sensor housing radially outward from the axis
Implementation Method 3
the one or more contoured blades are configured to force the air pulled into the interior portion of the sensor housing through the side vent
Data Source
AI summary
This technology relates to a system for cooling sensor components. The cooling system may include a sensor which has a sensor housing, a motor, a main vent, and a side vent. Internal sensor components may be positioned within the sensor housing. The motor may be configured to rotate the sensor housing around an axis. The rotation of the sensor housing may pull air into an interior portion of the sensor housing through the main vent, and the air pulled into the interior portion of the sensor housing may be exhausted out of the interior portion of the sensor housing through the side vent.