Smart sensors for indoor environmental monitoring are devices that measure and monitor various parameters of air quality and indoor conditions. These sensors are often used in homes, offices, schools, healthcare facilities and industrial buildings. Currently, thanks to our project, the sensors are located in the archives of the Regional Scientific Library in Liberec, in the Dolní Řasnice Primary School and in the Jindřichovice pod Smrkem Retirement Home as part of the Test Before Invest service.
Main idea
Using smart digital technologies, key indoor environmental parameters such as temperature, humidity, CO₂ concentration, dust, noise and light levels can be measured efficiently. Based on the data collected, intelligent systems can automatically adjust heating, ventilation, air conditioning or lighting settings to ensure optimal conditions for occupant health, comfort and productivity. Thanks to these technologies, potential problems such as high concentrations of pollutants or inefficient energy management can also be identified early and preventive measures taken to maintain a stable and healthy indoor environment.
How we helped
The monitoring was carried out using a device with the trade name CHESTER from HARDWARIO, a.s. It is a modular IoT (Internet of Things) platform designed for industrial applications such as Industry 4.0, smart cities, remote metering and agriculture. CHESTER allows sensors, actuators, PLC controllers and other devices to be connected to the Internet, facilitating the collection and transmission of data from different environments. Its flexibility and wide configuration options make the device suitable for a variety of IoT projects that require a reliable and energy-efficient solution with the ability to be customized to specific user needs.
For the indoor environment measurement in the Test before invest service, a variant with the following sensors was used:
Temperature: Sensors monitor the current room temperature to optimise heating or air conditioning. Humidity: Sensors monitor humidity levels, which is important for health and equipment protection. Pressure: Sudden changes in pressure can affect sensitive individuals – causing headaches, fatigue or migraines. Motion: (PIR detector) / number of motion activations ~5 m / detection of motion in the room. CO₂ (Carbon dioxide): High levels of CO₂ can cause fatigue, reduced concentration and headaches. Light: Sensors detect light levels and can optimise lighting. Emergency button: Used to send a notification to the mobile phone in case of an emergency.
Our solution
On the basis of the values obtained from the measurements, an optimal variant of the placement of sensors with the required sensors throughout the building is always proposed and, if possible, an adequate building mode is set that responds to the measured values (ventilation, air conditioning, heating, etc.). The values obtained from the individual sensors can be monitored remotely via a dashboard application on the SARA.hub platform. Historical values are stored. It is also possible to set up regular reports or notifications based on the measured values.
Reference
“The installation of smart sensors to monitor the indoor environment is a significant step forward for our school. Thanks to these modern technologies, we can better monitor air quality, temperature and humidity in classrooms and other areas of the school. This will allow us to create a healthier and more comfortable environment for our students and teachers, which has a positive impact on learning and overall well-being. Our priority is to ensure not only quality education, but also safety and comfort for all.”
Mgr. Vladimír Blažek, Director of the Dolní Řasnice Primary School and Kindergarten
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