Since March 2020, a dozen public housing buildings located in Saint-Pierre-les-Corps in the Tours region have been included in a remote energy monitoring project.
The primary objective of this project was tooptimize site maintenance and monitoring. In other words, the goal was to minimize unnecessary maintenance by remotely assessing the need for human intervention.
A project involving multiple stakeholders
Sysmotic, originally a BMS integrator BMS automation specialist and a subsidiary of the Sys&Com Group, has focused its core business on the sale of programmable logic controllers since its founding in 2012. Based in Nantes, it has subsidiaries in Vannes, Tours, and the Vendée region.
Sysmotic has been a long-standing partner of Enless Wireless, as the two companies have collaborated on numerous occasions on IoT projects for energy performance monitoring, initially based on 868 MHz Wireless M-Bus technology and later on 169 MHz technology.
Sysmotic, in partnership with Alpha Ohméga Syst’M, handled the project integration and system installation on behalf of Eiffage Énergie Systèmes, which is responsible for maintaining the heating and domestic hot water systems.
12 buildings equipped with nearly 60 Enless Wireless radio temperature transmitters
The IoT project was deployed in an operated communication mode on the Sigfox network, with the site enjoying good coverage across all 12 of its buildings.
A total of 42 Enless Wireless ambient temperature sensors , which communicate via the Sigfox protocol , were installed in the residential units, along with 14 contact temperature sensors connected to the primary heating and domestic hot water systems of the site’s six substations.
These transmitters, all equipped with long-life D-cell batteries, have been configured to transmit every 30 minutes, ensuring that on-site maintenance teams will not need to replace the batteries during the five-year term of the current energy performance contracts.
The purpose of regularly monitoring room temperatures in the living areas of each unit is to ensure that tenants enjoy a minimum comfortable temperature of 19°C at all times.
Monitoring temperatures at the supply and return lines of domestic hot water systems is primarily used to detect system failures. It also helps prevent health risks associated with the potential growth of Legionella bacteria.
Real-time data visualization for maximum responsiveness
The temperature data periodically transmitted by Enless Wireless transmitters is viewed and analyzed using IoThink’s Kheiron visualization platform.
It provides both an overview of the monitored sites (through general group views) and detailed views of each piece of equipment or room in question.
Its desktop and mobile versions (responsive app) allow maintenance teams—whether on-site or working remotely—to view data in real time.
Low and high temperature thresholds have been set; if these thresholds are exceeded, alarm emails are sent to the maintenance technician responsible for the site in question. For example, for room sensors monitoring temperatures inside the units, a low threshold of 19°C has been set. In the event of an alert, teams can respond on-site to take corrective actions such as adjusting or replacing HVAC equipment.
“The installation was very easy to set up. Our relationship with the Enless teams was truly positive, as was the relationship with the teams at IoThink, the software publisher that helped us configure the Enless Wireless sensors connected to their platform.Remote monitoring will allow our client to drastically reduce unnecessary maintenance operations and the associated costs ,” says Yannick Vacher, account manager at Sysmotic.
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