Traffic monitoring based on non-imaging detection
AssigneePalo Alto Research Center Incorporated
InventorsPeter Kiesel, Marshall W. Bern, Joerg Martini, Malte Huck
Life of this patent
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Abstract
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.
Claims26
A traffic monitor, comprising:
- a non-imaging radiation detector;
- a mask comprising a non-periodic arrangement of mask features;
- and
- a focusing element configured to focus radiation emanating from objects moving in a traffic pattern and affected by the mask onto the non-imaging radiation detector, wherein the non-imaging radiation detector is configured to sense the radiation and to generate a time varying output signal based on sensed radiation.
A traffic monitor, comprising:
- a non-imaging radiation detector;
- a mask comprising arrangement of mask features;
- and
- a focusing element configured to focus radiation emanating from objects moving in a traffic pattern and affected by the mask onto the non-imaging radiation detector, the non-imaging radiation detector configured to sense the radiation and to generate a time varying output signal based on sensed radiation;
- and
- signal processing circuitry configured to analyze the time varying output signal by time domain analysis to provide traffic information.
A traffic monitor, comprising:
- a non-imaging radiation detector;
- a mask comprising a multi-dimensional array of mask features;
- and
- a focusing element configured to focus radiation emanating from objects moving in a traffic pattern and affected by the mask onto the non-imaging radiation detector, wherein the non-imaging radiation detector is configured to sense the radiation and to generate a time varying output signal based on sensed radiation.
A method of monitoring traffic, comprising:
- sensing spatially patterned radiation emanating from traffic objects moving in a traffic pattern;
- generating a time varying output signal based on the spatially patterned radiation;
- analyzing the time-varying output signal using time domain analysis;
- and
- providing traffic information based on the time domain analysis of the time-varying output signal.
A traffic monitor, comprising:
- a radiation source configured to emit spatially patterned radiation toward moving traffic objects which is reflected by the moving traffic objects;
- a non-imaging radiation detector configured to sense the spatially patterned radiation which is reflected by the moving traffic objects and to generate a time varying output signal based on the reflected radiation;
- and
- signal processing circuitry configured to analyze the time varying output signal to provide traffic information.
A traffic monitor, comprising:
- a non-imaging radiation detector configured to sense spatially patterned radiation emanating from objects moving in a traffic pattern and to generate a time varying output signal based on the sensed radiation;
- and
- signal processing circuitry configured to analyze the time varying output signal using time domain analysis to provide traffic information.
Dependencies are inferred from the claim text.