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The word "infrared" is derived from "infrared" and is beyond red, indicating the wavelength.
Thermal image display
Thermal image display (3 photos)
The location in the spectrum of electromagnetic radiation. The word "thermography" is generated using the same root word, meaning "temperature image." The origin of thermal imaging was attributed to the German astronomer Sir William Herschel, who did some experiments using sunlight in 1800. Herschel lets the sun shine through a prism and places a thermometer in various colors, using a sensitive mercury thermometer to measure the temperature of each color, and the result is infrared radiation. Herschel found that when he crossed the red light into what he called the "dark red hot" area, the temperature rose.
Until the 1960s, thermal imaging technology was used in non-military applications, and the first generation of thermal imaging cameras for civilian use began to emerge – as sophisticated instruments were gradually applied by various industries. In 1988 AGEMA developed the portable battery-driven ThermoVision 400 series, revolutionizing the condition monitoring market. Although early thermal imaging systems were cumbersome, slow in data acquisition and poor resolution, they were used in industrial applications such as inspection of large transmission and distribution systems. In the late 1990s, AGEMA brought the first uncooled thermal imaging camera to the market, and then the US FLUKE gradually entered, and since then the thermal imaging device has entered a period of rapid development. Due to the emergence of the first generation of thermal imaging cameras, the problem of charging temperature detection of the power connector is solved. It has the advantages of portability, non-contact, etc., and can visually see the temperature distribution. It is quickly used in power inspection, circuit maintenance, circuit research and development, material research and other scientific research.
In the early 21st century, with the development of thermal imaging technology, some thermal imager manufacturers introduced a second-generation thermal imager suitable for long-term online monitoring and network monitoring. Thermal imaging technology began to develop toward sensors. The second-generation thermal imaging camera provides 24-hour real-time monitoring of critical equipment and high-risk areas. It can be linked with other devices to form a monitoring system to achieve large-scale networking. Later, it began to be used in substation monitoring, fire prevention, security and assisted driving.
After 2010, the third generation of thermal imaging cameras appeared on the market – thermal imaging technology began to integrate with the mobile Internet. The combination of the thermal imager and the mobile phone takes advantage of the convenient handling of the mobile phone, the rapidly increasing processing power and the mobile networking function, making the operation of the thermal imager simpler and more powerful. Moreover, the mobile phone thermal imager facilitates rapid cloud storage and data sharing, enabling the thermal imager to evolve from an isolated instrument and sensor to a thermal image acquisition terminal for big data, greatly expanding the application space of the thermal image.
With the popularization of thermal imaging technology, civilian thermal imaging cameras have gradually entered the field of consumption from industry and medical. How to make the thermal imager more popular for the public to become an issue that the innovation company in the thermal image field needs to pay attention to and solve. The cloud thermal image released at CES in the United States in 2017 is the representative of the fourth generation of thermal imaging technology. Thermal imaging technology has begun the development of intelligent and Internet-based integration. Cloud Thermal Image is an intelligent thermal image surveillance camera based on Internet services. Users only need to power the cloud thermal image and connect to the Internet cable or 4G network card to watch real-time thermal image video and receive alarm information on the mobile phone. Users do not need complex network settings or thermal image expertise, and intelligent cloud thermal images automatically identify fire risks and security intrusion risks. The development of the fourth generation of thermal imaging cameras has brought thermal imaging technology into the popular market and opened up a new era of thermal imaging.