This platform employs commercially available thermal components to provide real-time warnings when nearby fire conditions reach hazardous heat levels. The system also collects under-canopy thermal data during active firefighting operations, helping scientists better understand fire behavior and environmental conditions.
By combining affordable hardware with real-time monitoring, this technology supports both wildfire response and field-based research.
The Challenges of Wildland Firefighting
As wildfire activity continues to challenge firefighting agencies, accurate monitoring of localized thermal hazards is essential.
Fire dozers play a key role in wildfire suppression by clearing vegetation and constructing fire breaks to slow or redirect flames. The AFC is currently using a bulldozer model that has an enclosed ‘envirocab’. Though these models are safer for operators, their enclosed nature means it can be difficult to determine when a fire’s radiant heat has reached a hazardous temperature.
In addition to operator safety, excessive heat can compromise vehicle integrity, potentially melting electrical wiring. As AFC fire analyst Ethan Barret says, ‘It’s not so much about what’s going to burn the tractor up as what’s going to shut the tractor down.’
These challenges highlight the need for specialized thermal telemetry systems capable of providing real-time hazard awareness.
Design and Functionality of the Sensor System
To improve operator safety, NASA researchers developed a thermal monitoring system using a commercial thermocouple, commonly found in high-temperature industrial applications.
This thermocouple is mounted externally on the dozer to directly measure radiant heat from approaching fire fronts. Operating independently of the vehicle’s electrical system, the battery-powered sensor continuously transmits temperature data to a control module.
When radiant heat from a nearby fire reaches a predefined danger threshold, the system activates a high-visibility LED (light-emitting diode) indicator, providing the operator with an immediate warning of hazardous conditions.
Field deployments conducted between September 2025 and March 2026 involved personnel from NASA’s Langley Research Center and the University of Alabama in Huntsville, focusing on straightforward integration with existing firefighting equipment. The platform’s simple design demonstrates that effective thermal monitoring can be implemented without specialized manufacturing.
Real-World Testing and Operator Feedback
Field evaluations conducted in partnership with the AFC confirmed the effectiveness of the thermal monitoring system during prescribed burns and active wildfire operations. In addition, feedback from bulldozer operators indicated improved situational awareness.
The sensor platform provided clear, real-time warnings, allowing crews to withdraw before excessive heat could threaten equipment integrity or operator safety. Following the successful pilot program, the AFC began planning broader deployment of the thermal monitoring units across its bulldozer fleet.
Environmental Data Collection for Fire Research
Beyond enhancing operator safety, the thermal monitoring system provides a platform for collecting ground-level environmental data beneath dense forest canopies. These observations can complement satellite and airborne datasets.
Future expansion plans include integrating additional instruments, such as anemometers to measure local wind conditions and the Fire Thermal InfraRed Spectrometer (FireTIRS) to record parameters including flame characteristics and gas emissions.
Together, these capabilities could establish a monitoring network that supports operational firefighting and wildfire research, improving the accuracy of fire behavior models and enhancing situational awareness across active fire zones.
Conclusion: Toward Reliable Wildfire Management
In summary, the successful deployment of these low-cost sensors represents a significant advancement in firefighter safety and wildfire analytics. Beyond providing real-time heat warnings for equipment operators, the system establishes a foundation for collecting high-quality ground-level data needed to improve the understanding of wildfire behavior.
Future development will enable measurements of flame characteristics and fire-related emissions. These expanded datasets are expected to support the development of more accurate predictive fire models and advanced decision support tools.
Journal References
Loiacono, M. (2026). NASA Develops Sensor to Improve Firefighter Safety. NASA. https://www.nasa.gov/wildland-fire-management/nasa-develops-sensor-to-improve-firefighter-safety/
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