Infrared Module Self-Calibration via Integrated Heating
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Solution Overview
Problem
Infrared sensors in non-contact temperature measurement devices face challenges in achieving accurate temperature correction due to difficulties in setting the sensor to a predetermined temperature after assembly, as external heat conduction is required.
Innovation Solution
An infrared module comprising an infrared sensor, a computation and control processor with a temperature measurement unit, and a heating element, where the sensor and processor are stacked, allowing for temperature regulation and correction by generating heat and obtaining temperature signals to perform calibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If temperature correction is performed after the infrared sensor is assembled into a device, then temperature measurement accuracy can be improved, but the difficulty of setting the infrared sensor to a predetermined temperature increases due to requiring external heat conduction
Solution Approach 1:
The infrared sensor module performs temperature correction autonomously using an integrated heating element. The sensor heats itself to predetermined temperatures for calibration without requiring external heat conduction or complex temperature setting operations, thereby improving ease of operation while maintaining measurement precision
Solution Approach 2:
The heating element pre-heats the infrared sensor to specific predetermined temperatures before temperature correction measurements are taken. This preliminary heating action eliminates the need for complex external heat conduction processes during correction, making the temperature setting operation simple and direct
2Measurement precision
If external heat conduction is used to set the infrared sensor temperature, then the sensor can reach predetermined temperature for correction, but the device complexity increases
Solution Approach 1:
The heating element is integrated directly into the infrared sensor module, merging the temperature setting function with the sensing function. This integration eliminates the need for separate external heating devices and complex heat conduction mechanisms, thereby reducing device complexity while enabling accurate temperature correction
Solution Approach 2:
The heating element serves as an internal intermediary that transfers heat directly to the infrared sensor. This internal intermediary mechanism replaces complex external heat conduction systems, simplifying the overall device structure while achieving precise temperature control for correction
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 efficient temperature regulation and correction of the infrared sensor, facilitating accurate temperature measurements by allowing the sensor to reach predetermined temperatures for calibration, improving measurement accuracy.
Implementation Method 1
a heating element that regulates a temperature of the infrared sensor by generating heat
Implementation Method 2
infrared sensors for detecting human bodies, non-contact temperature measurement devices, and gas sensors based on the thermal effects of infrared radiation and absorption of infrared radiation by gases
Data Source
AI summary
An infrared module that enables temperature regulation of an infrared sensor to be readily achieved and a method of correcting the infrared module are provided. The infrared module (10) includes an infrared sensor (11) that detects infrared radiation emitted from an object being measured, a computation and control processor (20) that includes a temperature measurement unit (22) that obtains a signal from the infrared sensor and measures a temperature of its own, the computation and control processor obtaining a temperature signal from the temperature measurement unit and performing a computation, and a heating element (60) that regulates a temperature of the infrared sensor by generating heat, wherein the infrared sensor and the computation and control processor are stacked.