Embedded Sensor Atmospheric Absorption Compensation
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Solution Overview
Problem
Existing systems for atmospheric absorption determination in unmanned aerial vehicles (UAVs) face challenges in accurately measuring atmospheric absorption values without external air measurements, particularly due to the influence of heat sources within the vehicle.
Innovation Solution
A system with a sensing device and logic device within the UAV's housing measures humidity and temperature, compensates for heat sources, and determines a moisture value to estimate atmospheric absorption values externally, using equations and lookup tables to account for internal heat effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If sensors are embedded within the UAV housing, then device complexity is reduced and ease of manufacture is improved, but measurement precision deteriorates due to heat source interference
Solution Approach 1:
The patent extracts the harmful thermal influence from the measurement process by identifying and separating the heat source contribution from the ambient temperature measurement. The logic device calculates the heat source temperature and subtracts its effect from the sensor reading, effectively removing the interference while keeping the sensor embedded in the housing.
Solution Approach 2:
The patent introduces an intermediary calculation process that acts as a mediator between the contaminated sensor reading and the true ambient temperature. The logic device uses the known heat source temperature and thermal characteristics to compute a correction factor, which is then applied to retrieve the accurate ambient temperature despite the embedded sensor's proximity to heat sources.
2Measurement precision
If external air measurements are used, then measurement precision is improved, but device complexity increases and ease of operation deteriorates
Solution Approach 1:
The patent implements a self-service approach where the embedded sensors measure their own environment (including the heat source temperature) and the logic device performs self-correction by calculating and removing the heat source influence. This eliminates the need for external measurement systems while maintaining measurement precision through intelligent processing of internal sensor data.
3Measurement precision
If sensors are placed away from heat sources, then measurement precision is improved, but device complexity increases and ease of manufacture deteriorates
Solution Approach 1:
The patent changes the approach from spatial separation (physical distance) to parameter compensation (mathematical correction). Instead of moving sensors to distant locations, the system measures the heat source temperature parameter and uses it to computationally adjust the ambient temperature reading, achieving the same precision goal without increasing device 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
This method allows for accurate determination of atmospheric absorption values without external air measurements, enhancing radiometric accuracy for infrared imaging systems and simplifying UAV design by embedding sensors within the housing.
Implementation Method 1
The sensing device is configured to determine a humidity within the housing and a temperature within the housing
Implementation Method 2
compensating for the influence of heat sources within the vehicle on the measured values
Data Source
AI summary
Techniques for atmospheric absorption determination using embedded sensor data are provided. In one example, a system includes a housing. The system further includes a sensing device within the housing. The sensing device is configured to determine a humidity within the housing and a temperature within the housing. The system further includes a logic device. The logic device is configured to compensate the humidity and the temperature based on a location of the sensing device within the housing relative to heat sources within the housing. The logic device is further configured to determine a moisture value based on compensation of the humidity and the temperature. The logic device is further configured to determine an atmospheric absorption value based on the moisture value. Related devices and methods are also provided.