Thermal Imaging Temperature Measurement with Facial Area Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current temperature measurement systems face challenges in accuracy, particularly when detecting body temperature, as a single point reading is unreliable and can be influenced by external factors, leading to inconsistencies and potential false readings.
Innovation Solution
A method and system that utilize an imaging device to detect a person's facial area, generate thermal images, and determine temperature readings at multiple points, with a processor analyzing these readings for inconsistencies and sending notifications based on thresholds, integrating with access control systems to ensure accurate temperature assessment without requiring personnel presence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single point temperature reading is taken on the body, then the measurement process is simple and fast, but the accuracy and reliability of the temperature measurement deteriorates
Solution Approach 1:
The patent divides the temperature measurement process into multiple discrete steps: initial temperature reading acquisition, baseline temperature determination through multiple measurements, temperature difference calculation, and threshold comparison. This segmentation allows the system to maintain fast measurement speed while improving accuracy through systematic multi-point and multi-time sampling.
Solution Approach 2:
The system performs preliminary measurements to establish a baseline temperature before making the final temperature assessment. By taking multiple initial readings and determining a baseline temperature, the system prepares reference data that enables more accurate anomaly detection without requiring the person to wait, thus maintaining measurement speed while improving precision.
2Measurement precision
If multiple temperature readings are taken at different points, then the temperature measurement accuracy improves, but the measurement time and system complexity increase
Solution Approach 1:
The patent implements a tiered measurement approach where the system first takes a limited number of rapid measurements to establish a baseline, then only performs additional measurements if temperature differences exceed a threshold. This partial action approach ensures high measurement accuracy when needed while minimizing measurement time for normal cases, effectively balancing precision and time consumption.
Solution Approach 2:
The system continuously monitors temperature differences between multiple points and compares them against predefined thresholds. This feedback mechanism allows the system to adaptively determine when additional measurements are necessary, enabling accurate temperature assessment without requiring excessive measurement time for every individual.
3Ease of manufacture
If physical proximity is required for temperature measurement, then the measurement can be performed with simple equipment, but the ease of operation deteriorates and contact is required
Solution Approach 1:
The patent replaces the mechanical contact-based temperature measurement system with an optical detection system. By using imaging devices and sensors to detect thermal radiation from the body surface, the system eliminates the need for physical contact while maintaining measurement capability, thus improving ease of operation without significantly complicating the system through the use of established optical sensing technologies.
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 approach enhances accuracy in temperature measurement, reduces false positives and negatives, and allows for rapid scanning of multiple individuals, providing reliable temperature data for access control decisions while being resistant to environmental influences.
Implementation Method 1
generating, at the sensing device, a thermal image of the person
Data Source
AI summary
Example implementations include a method, apparatus and computer-readable medium for determining a set of temperature readings of a person attempting to proceed beyond an area. The implementations further include detecting the person entering the area and detecting a facial area of the person. The implementations further include sending location information of the facial area to a sensing device. The implementations further include generating a thermal image of the person and determining a first set of temperature readings. The implementations further include determining a first set of temperature differences comprising one or more temperature differences between the temperature readings in the first set. The implementations further include determining whether one or more of the temperature differences in the first set does not satisfy a threshold and generating a notification in response to the determination. Additionally, the implementations include transmitting the notification to one or more output devices.