Vehicle Interior Temperature Sensor Housing with Infrared Shielding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for measuring interior vehicle temperature, such as non-contact methods, are unreliable due to external direct sunlight and internal heat sources like engine heating, which can distort temperature readings.
Innovation Solution
An apparatus with a housing containing infrared ray blocking material and a non-contact sensor that measures temperatures of an exposed part and an opening, allowing for accurate interior temperature calculation by considering temperature differences and external influences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a non-contact method is used to measure interior temperature, then the measurement can be performed without a separate motor and is simpler to implement, but the reliability of the measurement decreases due to external direct sunlight and internal heat sources
Solution Approach 1:
The housing is divided into multiple temperature measurement areas: an exposed part that contacts interior air and an inner space that is shielded from direct sunlight and heat sources. The non-contact sensor measures temperatures at these different locations separately, allowing the system to segment the measurement function to achieve both simplicity and reliability.
Solution Approach 2:
The housing acts as an intermediary structure with infrared ray blocking material that filters out harmful external and internal heat radiation. This intermediary protects the inner space while allowing the exposed part to measure interior air temperature, resolving the contradiction between simple non-contact measurement and reliable temperature reading.
2Reliability
If infrared ray blocking material is added to the housing to prevent heating from external infrared rays, then measurement reliability improves, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The housing material's infrared radiation properties are changed by incorporating infrared ray blocking material or applying an infrared ray blocking film. This parameter change enables the housing to selectively block harmful infrared radiation while maintaining manufacturability through conventional materials or coating processes.
3Reliability
If the opening is provided at a lower portion of the housing, then the opening is protected from direct sunlight by the exposed part, but the structural design becomes more complex
Solution Approach 1:
The opening is positioned at a lower portion of the housing, utilizing the vertical dimension to allow the exposed part to shield it from direct sunlight. This spatial arrangement in another dimension provides passive protection without requiring additional active shielding components, resolving the contradiction between protection and structural complexity.
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
Enables accurate measurement of interior vehicle temperature without suction, reducing errors from external sunlight and internal heat sources, ensuring reliable temperature data for air conditioner control.
Implementation Method 1
an infrared ray blocking material configured to inhibit an inner temperature inside the inner space from rising due to exposure to external infrared rays
Implementation Method 2
a non-contact sensor provided on the inner space of the housing for measuring a temperature of the exposed part and a temperature of the opening by using a non-contact method
Data Source
AI summary
An apparatus and a method for measuring interior temperature of a vehicle, the apparatus includes a base substrate provided inside an interior panel of the vehicle and a housing including an infrared ray blocking material for inhibiting temperature of an inner space from being increased. The housing includes an exposed part provided in one side of the housing and exposed to an interior space of the vehicle, and an opening on a side portion of the exposed part for allowing the inner space of the housing to communicate with the interior space through the opening. The apparatus further includes a non-contact sensor provided on the inner space of the housing for measuring temperatures of the exposed part and the opening, and a controller calculating temperature of the interior space of the vehicle with the measured values by the non-contact sensor.