Electronics

The new “Covid Alarms” can sniff out infected people in crowded areas

Electronic devices can be used immediately to detect the presence of covid infections in crowded areas using body odor. Researchers at the London School of Hygiene and Tropical Medicine (LSHTM) and Robo Scientific Ltd, a biotechnology company at Durham University, have tested a “covidal arm” equipped with an organic semiconductor sensor (OSC) to detect coronavirus.

Early studies have shown that covid-19 infection has a distinct odor due to changes in the body. An odor composed of volatile organic compounds (VOCs). The sensor uses this scent as a “fingerprint” of the scent and compares it to other scents to detect infections.

“These results are very promising and show the potential of this technology to be used as a fast and non-invasive test with incredible accuracy. However, these results can be reproduced in a real environment. Further testing is needed to see if this is the case, “said Professor James Logan, head of disease management at LSHTM, who led the study.

“If these devices are well developed for use in public places, they can be easily scaled up at an affordable price, and with the ability to develop sensor arrays that detect other diseases within a few weeks. It can also protect people from future outbreaks of illness, “he said.

How to use?

Gadgets work by inhaling VOCs that are involved in the generation of odors. VOCs pass through a sensor block, where they are analyzed and compared to digital odor fingerprints. The sensor responds to Covid-19 infection.

The study used 57 body odor samples, 27 of whom were asymptomatic or had mild symptoms of covid infection. The company’s VOC analyzer model 307B with an array of 12 OSC sensors analyzed the sample. The OSC sensor, tuned to be sensitive to VOCs (ketones and aldehydes) from the covid virus, captures the odor profile of the sample. The sensor was able to distinguish the infected sample. On the first day of the test, we achieved an average of 98% specificity (meaning a low risk of false positive results) and an average of 99% sensitivity (meaning a low risk of false negative results). On the second day of the test, the sensor achieved 100% sensitivity and specificity, suggesting that it can detect the presence of COVID-19 infection more accurately than any other diagnostic test available.

Portable device

Robo Scientific, a Cambridgeshire-based startup, explores the potential of two devices backed by these findings, enabling fully automated COVID-19 screening. Portable handheld devices and room-based devices.

The covid-19 “Air Monitor” will tell you if someone in the room is infected with a covid infection. Handheld devices can detect whether a person is positive from body odor. When deployed in public, these devices can be used as a faster, less invasive diagnostic to inform individuals if they are infected and need self-quarantine, instead of PCR and LFT tests. I will. These can be used with individual air samplers or individual exhalation or mask samples.

Robo Scientific Ltd. Stan Curtis, CEO of the company, said: “With our experience in consumer electronics and five years of developing our own sensors for agricultural applications, we have created a new way to detect VOCs.”

The device can screen areas such as classrooms and aircraft cabins to detect if an infected individual is in a room and obtain air analysis results within an estimated 30 minutes. These devices were developed by using proven sampling methods and analysis to detect disease in herds of up to 50,000 chickens, using techniques previously used in poultry houses.



https://www.electronicsb2b.com/headlines/new-covid-alarms-could-sniff-out-infected-people-in-crowded-places/ The new “Covid Alarms” can sniff out infected people in crowded areas

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