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- Title
A novel system for measuring vehicle speed via analog signals of pyroelectric infrared sensors.
- Authors
Quang, Vu Van; Thang, Vu Toan
- Abstract
This paper presents a method of measuring transportation vehicle's speed via analog signals of a couple of pyroelectric infrared sensors. The measuring system is located along the roadside with the assumption that optical axes of the sensors are parallel to each other and perpendicular to the moving direction of vehicles. A cross-correlation method combined with interpolation has been used in order to determine the time delay between two output signals, thus defining the traveling speed of the target. The experiment results show that the proposed method has an error of less than 5 km/h over the speed range of 20–90 km/h.
- Subjects
PYROELECTRIC detectors; SPEED; OPTICAL sensors; VEHICLES; INTERPOLATION
- Publication
International Journal of Modern Physics B: Condensed Matter Physics; Statistical Physics; Applied Physics, 2021, Vol 35, Issue 14-16, p1
- ISSN
0217-9792
- Publication type
Article
- DOI
10.1142/S0217979221400282