Traffic monitoring based on non-imaging detection

摘要

Traffic monitors based on non-imaging radiation detectors are described. A traffic monitor includes a non-imaging radiation detector that senses spatially patterned radiation emanating from objects moving in a traffic pattern. The detector generates a time varying output signal based on the sensed radiation. Signal processing circuitry is used to analyze the time varying output signal using time domain analysis to provide the traffic information.

主权项

1. A traffic monitor, comprising:
a non-imaging, single radiation detector; a mask comprising a non-periodic arrangement of mask features including multiple radiation-transparent mask features; and a focusing element configured to focus radiation emanating from objects moving in a traffic pattern and affected by each of the multiple radiation-transparent mask features onto the non-imaging, single pixel radiation detector, wherein the non-imaging, single pixel radiation detector is configured to sense the radiation and to generate a time varying output signal based on sensed radiation.