In January 2025, AS "SAF TEHNIKA" in collaboration with Riga Technical University began implementing a research project titled "Validation of Data-Driven Energy Efficiency Algorithms and Analysis of Data Transmission Quality in High-Density Sensor Networks."

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The projects subject is improvement of energy efficiency management processes in buildings of various types and purposes, with special attention given to the secure acquisition, storage, and analysis of data, as well as the development of predictive models.

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The main objective is to develop a universal algorithm that can optimize sensor placement and reduce the number of sensors - regardless of the building's type or use - without compromising the quality of decisions related to enhancing building energy efficiency. This research continues the development of sensor solutions and predictive models from a previous project, testing them in buildings at the Riga Technical University campus in Ķīpsala.

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Key activities include research and experiments aimed at analyzing data loss between sensors and base stations, determining the optimal sensor density, and testing various radio communication solutions by comparing Aranet LoRa and mioty™ data transmission protocols. Additionally, a sensor placement method will be adapted and validated for different types of buildings, such as those in the RTU complex in Ķīpsala.

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Expected outcomes include a potential reduction in the number of sensors while maintaining decision quality, reduced radiocommunication overload and interference, and improved reliability of data transmission, energy consumption, and communication range.

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In the first months of the project implementation, a z-class sensor based on the mioty™ protocol has already been developed. This sensor measures air temperature, relative humidity, atmospheric pressure, and carbon dioxide (CO₂) concentration. Its main components include the enclosure, display, and PCB (printed circuit board).

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A distinctive feature of the sensor is its specialized software, developed within the scope of the project, which complies with the ETSITS 103 357-2 standard. The prototype has successfully passed the mioty™ certification process organized by the mioty™ alliance.

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