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The infrared thermometer, originally used for industrial purposes, has now expanded into the medical field. It measures body temperature in real time without contact, reducing the risk of disease spread. Its high accuracy, fast results, ease of use, and portability offer significant advantages over traditional thermometers. The device’s speed and efficiency make it ideal for epidemic prevention, improving health personnel’s productivity. A microcontroller-based solution featuring the ZHW3548 has been developed to meet these needs.
1. Working Principle of the Infrared Thermometer
The device consists of an optical system, photoelectric detector, signal amplifier, signal processor, and display. The optical system captures infrared radiation and focuses it on the photodetector, which converts it into an electrical signal. This signal is processed, amplified, and translated into a temperature reading based on the target’s emissivity. Environmental factors like temperature and atmospheric conditions can influence readings and must be corrected.
Every object above absolute zero emits infrared energy. By measuring this energy, accurate temperature readings can be obtained. The amount and wavelength distribution of the radiation depend on the surface temperature of the object, forming the basis for infrared temperature measurement.
2. Features of the Infrared Thermometer Solution
At the core of the solution is the ZHW3548 microcontroller in an LQFP48 package. The development process includes project planning, software and hardware development, testing, and debugging. Key features include:
LCD Display with Three-Color Backlight: Ensures readability in all lighting conditions, with a red light for temperature alarms.
Fahrenheit and Celsius Switching: Users can toggle between units easily.
One-Click Operation: Quick, precise measurement with an accuracy of ±0.2°C.
Multi-Key Functionality: Includes power, measurement, unit selection, and a composite key for switching modes like memory, object temperature, and high-temperature warnings.
Extreme Environment Performance: Can measure between -10°C and 50°C.
Gorzim’s solution integrates a thermopile infrared sensor, microprocessor memory, LCD display, backlight, casing, and battery. It’s compatible with various market-standard shells, ensuring smooth integration. With established supply chains for key components, Gorzim provides one-stop services, including production line support, technical guidance, and customization to meet specific needs.
