Thermal radiation detector

摘要

An object detection system is provided for detecting a thermal emitting object in a blind zone proximate to a host vehicle (10). The system includes a thermal radiation detector (20) located on a host vehicle (10) and configured to sense temperature of multiple coverage zones (22A-22C) proximate to the host vehicle (10). The thermal radiation detector (20) includes a first infrared detector configured to measure temperature of a first coverage zone (22A) by receiving infrared radiation from the first coverage zone (22A), and a second infrared detector (25B) configured to measure temperature of second and third coverage zones (22B and 22C) by receiving infrared radiation from the second and third coverage zones (20B and 22C). A processor processes temperature sensed by each infrared detector. The processor determines a change in thermal temperature sensed by each infrared detector and determines the presence of an object (70) in the coverage zone based on the change in the sensed temperature. An output provides a signal indicative of an object (70) sensed in the coverage zones based on the determined change in temperature.