LoRaWAN-based air quality monitoring and contact tracing in public buildings show promise for controlling virus spread – EEJournal


Kerlink and Partners Deploy Internet of Things Project Showing How Building Owners Can Help Limit Covid-19 Transmission and Future Virus Outbreaks

May 5, 2022, 6:00 p.m. CEST – Combining ready-to-use IoT technologies and equipment with new mathematical models simulating the spread of Covid-19, a pilot solution at a large Parisian university hospital center has demonstrated how building managers in the future may limit the spread of viruses such as Covid-19.

The eight-month trial in 2021 included nearly 200 students and around 20 staff members who wore Bluetooth-enabled badges during their classes, labs and shifts at the Faculty of Medicine (Faculty of Medicine) at the Kremlin-Bicêtre AP -HP (Assistance Publique-Hospitals of Paris).

In addition to the continuous monitoring of the air quality of the buildings, the system monitored the movements and comings and goings of the occupants using dedicated mathematical models developed by two scientists from the University of Paris-Saclay. These models simulated the spread of Covid-19 in the student population, using contact-tracing matrices.

“This made it possible to study the importance of real contacts between individuals in the transmission process, and more generally to estimate the role of actions of the population, such as gathering in poorly ventilated rooms and the duration and type of communication – informal short conversation or longer collaboration – between individuals in the global spread of the epidemic“, declared Bertrand Maury, who, with his colleague Sylvain Faure, created the algorithms. “This evaluation has clearly shown that this IoT-based solution can help building managers in the future to limit the spread of viruses such as Covid-19.”

The building contact tracing app was combined with air quality monitoring including:

  • CO2 levels in premises based on occupancy rates and times, and ventilation adjustments,
  • Ventilation malfunctions or required maintenance of ventilation equipment, and
  • Hourly change rate (HRR), or complete room air change, which is a key performance indicator (KPI) tracked by building managers in their day-to-day operations.

The contact tracing matrices were inspired by an algorithm developed by the National Center for Scientific Research (CNRS) and the University of Paris-Saclay which defines epidemiological models of virus transmission. It also provides a first assessment of the influence of CO2 concentration as an indicator of poor air quality that can accelerate viral transmission, for example a CO2 level indicating insufficient indoor air renewal.

The pilot project of the AP-HP of Kremlin-Bicêtre was validated by the clinical research unit of the Faculty of Medicine Paris-Saclay, while the protection of private data and the identity of the participants in the pilot project was fully compliant with GDPR law.

Professor Olivier Lambotte, vice-dean of the Faculty of Medicine of Kremlin-Bicêtre AP-HP, said that the transmission of the Covid-19 virus and the desire to develop an “enhanced alert” tool based on epidemiological models have were the first triggers for this demonstrator project. and they have been successfully complemented by air quality monitoring through CO2 level analysis.

“After these initial results, the Faculty of Medicine will be able to refine its systems for combating the spread of epidemics thanks to a better knowledge of the interactions between students and thanks to a control of the quality of the air”, he declared. . “Mathematical modeling of air renewal in a classroom or amphitheater makes it possible to estimate in advance the maximum number of people who can be present to maintain a CO2 level below a set threshold.”

The system used technology jointly developed by Kerlink (AKLK – FR0013156007), specialist in solutions dedicated to the Internet of Things (IoT), Microsharinga leading provider of data management solutions for the IoT era, and Wirelessmajor manufacturer of self-powered intelligent sensors, communicating in radio mode and dedicated to energy performance & comfort applications in buildings.

The LoRaWAN-based system used Kerlink Wanesy™ Wave, a versatile electric anchor – combining Wi-Fi, BLE and LoRaWAN®for collecting contact tracing data from Bluetooth badges – and a Kerlink Wirnet™ iFemtoCell indoor gateway to transmit data to Microshare’s Universal Contact Tracing® application, which guarantees end-to-end security, confidentiality and reliability for the delivery of critical information where it is needed. The data it produces is GDPR compliant and provided via patent pending rules and Microshare’s sharing engine only to the appropriate and designated people in the organization at the right time. Enless Wireless provided the pilot project with easy-to-install and connect indoor air quality transmitters with built-in CO2 sensors and high-performance D-type batteries.

About Kerlink

Kerlink Group is a leading global provider of end-to-end connectivity solutions for the design, deployment and operation of public and private Internet of Things (IoT) Low Power/Wide Area (LPWA) networks ). Its comprehensive product portfolio includes industrial-grade networking equipment, state-of-the-art network core, operations and management software, value-added applications and expert professional services, backed by strong R&D capabilities. . Kerlink specializes in building smart and future-proof IoT connectivity in three major areas: Smart City & Quality of Life – city operations, utilities & meters, retail & public places, infrastructure & hubs, healthcare; Smart Building & Industry – Buildings & Real Estate, Industry & Manufacturing, Asset Monitoring & Tracking, and Smart Agriculture & Environment – Precision Agriculture, Livestock Monitoring & Husbandry, Environment & Climate, and Wildlife Protection. Over 200,000 Kerlink installations have been deployed to over 350 customers in 70 countries. Based in France, with subsidiaries in the United States, Singapore, India and Japan, Kerlink is co-founder and board member of the LoRa Alliance® and uCIFI Alliance™. It is listed on Euronext Growth Paris under the symbol ALKLK.

For more information, visit www.kerlink.com or follow us on our social networks – Twitter @kerlink_news, LinkedIn #Kerlink, YouTube – Kerlink

About Microshare

Microshare® provides large-scale Smart Building data solutions that improve safety, well-being and sustainability, and drive cost savings and efficiencies around the world. Our EverSmart suite of solutions produces real-time insights where none existed before in areas such as occupancy monitoring, energy consumption, guest satisfaction, environmental safety, and more. Microshare is a proud member of the LoRa Alliance®. www.microshare.io

About Enless Wireless

Enless Wireless has been one of the main French players in automation and IoT in energy efficiency and building comfort for more than 12 years. It manufactures a catalog of wireless radio sensors, based on the main radio protocols LPWAN LoRa, Sigfox, Wireless M-Bus. With Enless Wireless’ range of LoRaWAN® standalone wireless sensors, European system integrators can quickly and simply build their own private network using BACnet or Modbus protocols to connect to a PLC or their building’s IP network.

Enless Wireless also manufactures ranges of Sigfox and LoRaWAN® devices that enable system integrators to build operated networks. Efficient monitoring of energy consumption, CO2, VOC, temperature… with Low-Power / Ultra Long-Range products that are simple and quick to install is the first step in guaranteeing the safety and comfort of building occupants… and the optimization of energy bill!

For more information visit https://enless-wireless.com/en/


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