How do temperature measurement cameras work?

Table of Contents

1. Introduction
2. Principles of Operation
3. Key Components of Temperature Measurement Cameras
4. Accuracy and Calibration
5. Applications of Temperature Measurement Cameras
6. Savgood Company Solutions
7. References

Introduction

Temperature measurement cameras, commonly known as thermal cameras, are devices that capture images based on the infrared energy emitted by objects. These cameras have become essential tools in various industries, offering non-invasive methods for monitoring temperature changes with high precision.

Principles of Operation

Temperature measurement cameras operate based on the principle of detecting infrared radiation, which is emitted by all objects above absolute zero (-273.15°C). The thermal sensor within the camera captures this radiation and translates it into electronic signals, which are then processed to create a thermal image.

The sensitivity of these cameras is defined by their thermal resolution. A typical thermal camera can detect temperature differences as small as 0.05°C, providing a comprehensive temperature profile of the observed scene. The wavelength range for these cameras generally falls between 8 to 14 micrometers, where atmospheric interference is minimal.

Key Components of Temperature Measurement Cameras

• Infrared Lens: Focuses infrared radiation onto the sensor.
• Thermal Sensor: Converts infrared radiation into an electronic signal. Commonly used sensors are microbolometers.
• Processor: Analyzes electronic signals to generate an image. Advanced processors integrate AI for enhanced image processing.
• Display: Visualizes the thermal image, often in a color-coded format to delineate different temperatures.

Accuracy and Calibration

Ensuring accuracy in temperature measurement cameras necessitates regular calibration. Calibration involves adjusting the camera's readings with a known reference temperature to account for any deviations. Most manufacturers suggest bi-annual calibration to maintain precision within ±2°C or 2% of the reading, whichever is greater.

Applications of Temperature Measurement Cameras

• Industrial Inspections: Detects overheating components in machinery, preventing potential failures.
• Medical Diagnosis: Identifies abnormal temperature distributions in the human body, aiding in disease detection.
• Building Inspections: Locates heat leaks and insulation issues to improve energy efficiency.
• Security: Monitors perimeter areas and identifies intruders based on their thermal signature.

Savgood Company Solutions

Savgood offers a range of temperature measurement cameras with advanced features for high accuracy and durability. Their solutions include:

• SG-TC Series: Offers a thermal sensitivity of 0.03°C and is suitable for industrial inspections.
• SG-Med Pro: Specifically designed for healthcare applications, providing non-contact fever screening with a precision of ±0.3°C.
• SG-Infra Security: Integrates AI-powered analytics for enhanced perimeter security, capable of detecting temperature anomalies in real-time.

References

• Raytek Corporation. Infrared Temperature Measurement. Raytek. 2023.
• FLIR Systems. Principles of Infrared Thermography. FLIR. 2022.
• International Organization for Standardization. ISO 15783:2020 - Thermal Cameras. ISO. 2020.