Non-interfering vehicle detection
First Claim
1. A method for operating a vehicle detection system comprising:
- obtaining samples randomly from a detector of a vehicle detection system; and
determining the presence of a vehicle in response to the random samples.
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Abstract
A technique for operating a vehicle detection system involves obtaining samples randomly from a detector of the vehicle detection system and determining the presence of a vehicle in response to the random samples. When multiple detectors are located in close proximity to each other, the likelihood of interference caused by concurrent sampling events is reduced because of the randomness of the sampling, which in turn reduces the occurrence of incorrect vehicle detection results. Control systems for vehicle detection systems obtain the random samples independently from each other. Because the random samples are obtained independently from each other, multiple inductive loop vehicle detection systems can be operated in close proximity to each other without having to be coordinated or synchronized in any way. The possibility of an incorrect vehicle detection as a result of concurrent sampling events can be further reduced using validity checking techniques.
29 Citations
47 Claims
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1. A method for operating a vehicle detection system comprising:
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obtaining samples randomly from a detector of a vehicle detection system; and
determining the presence of a vehicle in response to the random samples. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for operating multiple vehicle detection systems that are located in close proximity to each other comprising:
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obtaining samples randomly from a first detector; and
obtaining samples randomly from a second detector that is in close proximity to the first detector;
wherein the random samples from the first detector and the random samples from the second detector are obtained independent of each other. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A control system for a vehicle detection system comprising:
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means for obtaining samples randomly from a detector of a vehicle detection system; and
means for determining the presence of a vehicle in response to the random samples. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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23. A control system for multiple vehicle detection systems that are located in close proximity to each other comprising:
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means for obtaining samples randomly from a first detector; and
means for obtaining samples randomly from a second detector that is in close proximity to the first detector;
wherein the means for obtaining samples randomly from the first detector and the means for obtaining samples randomly from the second detector are independent of each other. - View Dependent Claims (24, 25, 26, 27, 28)
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29. A control system for a vehicle detection system comprising:
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a sample controller configured to obtain samples randomly from a detector of a vehicle detection system; and
a processing unit, in signal communication with the sample controller, configured to determine the presence of a vehicle in response to the random samples. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36)
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37. A control system for multiple vehicle detection systems that are located in close proximity to each other comprising:
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a sample controller configured to obtain samples randomly from a first detector; and
a sample controller configured to obtain samples randomly from a second detector that is in close proximity to the first detector;
wherein the sample controller for the first detector and the sample controller for the second detector are independent of each other. - View Dependent Claims (38, 39, 40, 41)
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42. A method for operating an inductive loop vehicle detection system comprising:
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randomly energizing a loop detector of an inductive loop vehicle detection system; and
determining the presence of a vehicle in response to the random energizing. - View Dependent Claims (43, 44, 45, 46, 47)
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Specification