Ultrasonic Air Temperature Sensing for Automatic Climate Control - Sensor Development
2003-01-0740
03/03/2003
- Event
- Content
- Automatic climate control could be improved by measuring air temperature ultrasonically. Thermal comfort correlates better with bulk air temperature than with the temperature measured by the in-car sensor. The time of flight of an ultrasonic pulse through the air gives the bulk air temperature. In a proof-of-concept experiment, it is accurate to ± 0.5 °C from -40 to+60 °C. Two operational modes are demonstrated: pulse-echo in which a single transducer creates a pulse and detects its return from a reflector, and single-pass in which a source transducer creates a pulse that travels directly to a separate transducer.
- Pages
- 8
- Citation
- Han, T., Lambert, D., Oberdier, L., Partin, D. et al., "Ultrasonic Air Temperature Sensing for Automatic Climate Control - Sensor Development," SAE Technical Paper 2003-01-0740, 2003, https://doi.org/10.4271/2003-01-0740.