System and related methods for powering and controlling traffic preemption system components
First Claim
1. A traffic preemption system comprising:
- an intersection control module;
an intersection preemption unit comprising a signal detector configured to receive a signal transmitted by a vehicle preemption unit mounted to a vehicle;
a remotely located electronic device to provide a confirmation output of receipt by said intersection preemption unit of said signal transmitted by said vehicle preemption unit, comprising a controller configured to detect a variation in voltage; and
a cable coupling the intersection control module, the intersection preemption unit, and the remotely located electronic device, the cable comprising;
a power wire configured to carry a modulated voltage level to provide said variation in voltage, and share power among the intersection preemption unit and the remotely located electronic device;
a ground wire; and
a communications wire configured to transmit a communications signal between the intersection preemption unit and the intersection control module to control traffic light signals according to a preemptive traffic light control procedure responsive to receipt by said intersection preemption unit of said signal transmitted by said vehicle preemption unit.
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Accused Products
Abstract
A traffic preemption system comprising an intersection control module, an intersection preemption unit comprising a signal detector configured to receive a signal transmitted by a vehicle preemption unit mounted to a vehicle and a remotely located electronic device comprising a controller configured to detect a variation in voltage. The system further comprises a cable coupling the intersection controller, the intersection preemption unit, and the remotely located electronic device, the cable comprising a power wire configured to carry a modulated voltage level and share power among the intersection preemption unit and the remotely located electronic device, a ground wire, and a communications wire configured to transmit a communications signal between the intersection preemption unit and the intersection controller.
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Citations
20 Claims
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1. A traffic preemption system comprising:
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an intersection control module; an intersection preemption unit comprising a signal detector configured to receive a signal transmitted by a vehicle preemption unit mounted to a vehicle; a remotely located electronic device to provide a confirmation output of receipt by said intersection preemption unit of said signal transmitted by said vehicle preemption unit, comprising a controller configured to detect a variation in voltage; and a cable coupling the intersection control module, the intersection preemption unit, and the remotely located electronic device, the cable comprising; a power wire configured to carry a modulated voltage level to provide said variation in voltage, and share power among the intersection preemption unit and the remotely located electronic device; a ground wire; and a communications wire configured to transmit a communications signal between the intersection preemption unit and the intersection control module to control traffic light signals according to a preemptive traffic light control procedure responsive to receipt by said intersection preemption unit of said signal transmitted by said vehicle preemption unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of constructing a traffic preemption system, the method comprising:
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providing an intersection control module; providing an intersection preemption unit comprising a signal detector configured to receive a signal transmitted by a vehicle preemption unit configured to mount to a vehicle; remotely locating an electronic device to provide a confirmation output of receipt by said intersection preemption unit of said signal transmitted by said vehicle preemption unit, comprising a controller configured to detect a variation in voltage; and coupling the intersection control module, the intersection preemption unit, and the remotely located electronic device with a cable comprising; a power wire configured to carry a modulated voltage level to provide said variation in voltage, and share power among the intersection preemption unit and the remotely located electronic device; a ground wire; and a communications wire configured to transmit a communications signal between the intersection preemption unit and the intersection control module to control traffic light signals according to a preemptive traffic light control procedure responsive to receipt by said intersection preemption unit of said signal transmitted by said vehicle preemption unit. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification