Vehicle classification system and method
First Claim
Patent Images
1. A method of vehicle classification, comprising:
- generating a signal waveform from a signal in a single inductive loop generated by a passing vehicle;
comparing the signal waveform to a first plurality of model waveforms, wherein each model waveform is associated with a respective class of vehicle;
determining a first model waveform of the first plurality of model waveforms that matches the signal waveform; and
outputting data indicating the respective class of vehicle associated with the first model waveform.
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Abstract
Approaches for classifying vehicles include generating a signal waveform from a signal in a single inductive loop generated by a passing vehicle. The signal waveform is compared to a first plurality of model waveforms. Each model waveform is associated with a respective class of vehicle. A first model waveform of the first plurality of model waveforms that matches the signal waveform is determined, and data indicating the respective class of vehicle associated with the first model waveform is output.
8 Citations
20 Claims
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1. A method of vehicle classification, comprising:
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generating a signal waveform from a signal in a single inductive loop generated by a passing vehicle; comparing the signal waveform to a first plurality of model waveforms, wherein each model waveform is associated with a respective class of vehicle; determining a first model waveform of the first plurality of model waveforms that matches the signal waveform; and outputting data indicating the respective class of vehicle associated with the first model waveform. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for classifying a vehicle passing a single inductive loop, comprising:
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an oscillator coupled to the single inductive loop; a pulse comparator coupled to the oscillator, the pulse comparator configured to generate a pulse train in response to an output signal from the oscillator; a processor coupled to the pulse comparator; and a memory coupled to the processor, wherein the memory is configured with a plurality of model wave forms and with instructions that when executed by the processor cause the processor to; generate a signal waveform from a signal in the single inductive loop generated by a passing vehicle; compare the signal waveform to a first plurality of model waveforms, wherein each model waveform is associated with a respective class of vehicle; determine a first model waveform of the first plurality of model waveforms that matches the signal waveform; and output data indicating the respective class of vehicle associated with the first model waveform. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification