About us

Tetrad – Sensor Network Solutions, LLC provides low-cost, high-quality, customizable air-quality sensing solutions for homeowners and professional users. We are a small privately held company headquartered in Salt Lake City, UT that grew out of a partnership between Dr. Pierre-Emmanuel Gaillardon and Dr. Kerry Kelly at The University of Utah. Dr. Gaillardon, an Assistant Professor in Electrical and Computer Engineering, brings expertise in sensor design and embedded systems, and Dr. Kelly, an Assistant Professor in Chemical Engineering, brings expertise in air quality measurements and sensor calibration in real-world environments. Our original work began with funding from the National Science Foundation.

We strive to develop novel networked sensor designs that are rigorously calibrated, and to integrate these into flexible custom firmware that meets our clients data and security needs. Since the creation of the company, we have been selling sensors to health care providers and environmental researchers.

We are now pleased to offer our first generation sensing platform, AirU, to the public.

Our technology

Our AirU platform is a novel, flexible air-quality measurement system. It can be used for indoor or outdoor monitoring in personal and industrial applications.

Its current design measures particulate matter (1μm, 2.5μm and 10μm), oxidizing and reducing species, temperature, humidity, and location. It transmits this data to the cloud through a Wi-Fi connection, and stores up to 1 year of data onboard.

The AirU consists of a full PCB system including the mentioned sensors, an embedded microcontroller with an internet stack and associated peripheral components.

Our services

We work directly with clients to develop custom networked sensing solutions to meet their needs. Specifically, we work with clients to:

  • develop or assist in the development of sensitive and specific sensors for a variety of target air pollutants,
  • evaluate and calibrate commercially available sensing technologies,
  • integrate sensors and desired communication mechanisms into a custom networked sensor package, and
  • develop firmware that integrates directly with a client’s data infrastructure.

Our platform provides flexibility in two ways: (1) through selection, integration and calibration of sensors that meet client needs, thereby ensuring accurate data, and (2) through flexible firmware that can integrate directly to the client’s data infrastructure, rather than through a 3rd-party, potentially insecure web service. With its I²C connections, the AirU platform can easily integrate other environmental sensors and can be adapted to operate with battery power, solar power, and other communication mechanisms, beyond WiFi (e.g., low-power high-distance LoRa radio protocol).