Nowadays, the issue of measuring and monitoring human body temperature is particularly acute. Conventional methods of personal temperature measurement in public places are not always safe and often aggravate the problem of queues at checkpoints, thereby increasing the risk of a potential disease spreading.
Advantech company, a global leader in industrial computers and automation systems development, has released its complex solution for temperature measuring in public places, which is based on a network camera with thermal imaging, which allows for quick and efficient temperature measurement of a constant flow of people without their direct participation.
The principle of operation is quite simple: any object of a temperature above absolute zero is constantly emitting a certain amount of thermal radiation. A thermographic camera converts IR radiation to gray value and calculates thermal information using a measurement algorithm according to the ratio of the gray value and the current temperature of the object.
This complex uses artificial intelligence algorithms and can instantly identify visitors whose temperature differs from the norm. Next step, the temperature is checked again with a professional thermometer, thereby guaranteeing accurate measurements.
USM and UBX series embedded computers are responsible for the computing part of the monitoring complex. The UBX-310D-L0B0E model is based on the energy-efficient Intel Celeron J1900 processor with a clock frequency of 2.0 GHz and is used as a platform to display analyzed information from 4 cameras on a single display. For further work with the CSM infection prevention system and more detailed monitoring, the manufacturer recommends the USM-210G-UST00 model, since this computer supports up to 4 independent displays simultaneously. Also, this model can be used to control the thermal imager and send information to the database server. The facial recognition system requires high performance to handle a large flow of people and the solution lies in the USM-260F-BFL00 embedded computer, which supports high-performance 6/7 generation Core-i7 processors with a TDP of 35W.
In this solution, Advantech uses specialized cameras UCAM-220TT-U01 (a domed PTZ camera) and UCAM-220TB-U01 (a directional bullet camera). The temperature range for measurement varies from +30 to + 45° C. Due to the high accuracy of measurements and the error margin of 0.5 degrees (0.3 with Black Body), this complex can quickly and almost accurately identify visitors with high body temperatures.
Let’s also pay special attention to the "Black Body" device from the world-renowned manufacturer Hikvision. This black box is used in the solution as an option and is designed to calibrate thermal imagers for more accurate temperature measurement. When using "Black Body", the measurement error is only 0.3 degrees, which in turn significantly improves the efficiency of the entire complex.
Strengthening the capacities with CMS in the current coronavirus pandemic context
The final key element of the complex is the CMS software integration support, which offers enormous potential for data collection and analysis for a deeper understanding of the current epidemiological situation. A complex with CMS is able not only to keep the history of all visitors with high body temperature but also to analyze events by location and type, as well as provide information from cameras using event search and send reports to an infection prevention center.
To sum up, it should be noted that in the current coronavirus pandemic context the Advantech’s body temperature monitoring system is aimed at solving the most important task of modern society –ensuring the safety of the population anywhere in the world and preventive localization of possible outbreaks of various diseases.
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