Sensirion AG earned top honors in the Best Smart Infrastructure Solution category at Best of Sensors 2026 on May 6. The judging panel selected the company's new Sensirion SCD53, a next-generation, high-performance carbon dioxide CO2 sensor designed to break a decades-old technical bottleneck in building automation and environmental monitoring: long-term sensor accuracy drift.
The Infrastructure Challenge: The Flaw of Forced Calibration
In modern smart buildings, industrial facilities, and sealed environments, managing indoor air quality is vital for energy efficiency and human health. However, traditional CO2 infrastructure faces a major obstacle.
Over time, standard optical sensors experience mechanical and optical drift, causing their readings to become less accurate. To fix this, existing systems depend on Automatic Baseline Correction (ABC) or Automatic Self-Calibration (ASC) algorithms. These algorithms work on a flawed assumption: that the sensor will be exposed to fresh outdoor air (about 400 ppm) at regular intervals to reset its baseline.
In continuously occupied spaces, sealed industrial plants, or controlled agricultural facilities, this fresh-air exposure rarely happens. As a result, algorithms miscalculate the baseline, leading to skewed data, excessive energy use from unnecessary ventilation, and frequent manual maintenance.
The Innovation: True Intrinsic Stability
The Sensirion SCD53 changes this approach by establishing a new benchmark for intrinsic stability in gas sensing. Rather than using software algorithms to mask mechanical drift, the hardware is engineered to prevent drift from happening in the first place. By removing the need for manual recalibration and algorithm dependencies, the SCD53 offers key advantages for infrastructure managers:
Worry-Free Operation: Delivers reliable CO2 monitoring even in demanding, non-stop operational environments where fresh-air baselines are unavailable.
Sustainability and Resource Efficiency: Eliminating routine maintenance cycles and physical calibrations significantly reduces material waste and system downtime.
Optimized HVAC Control: Precise, drift-free measurements prevent ventilation systems from turning on unnecessarily, lowering building energy consumption.
Broad Deployment in Real-World Environments
Because the SCD53 maintains precision across a wide range of real-world settings, it serves as a versatile tool for smart city infrastructure. It supports sustainable system designs with a low lifetime environmental impact, making it ideal for high-density office complexes, hospitals, schools, and vertical farming environments where precise, long-term climate control is mandatory.
By tackling the root cause of sensor aging rather than relying on software workarounds, Sensirion's solution delivers the reliable data accuracy needed for the future of fully automated, green building infrastructure.
Other winners of the Best of Sensors 2026 are available online.