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Roadway Sensor Charger Utilizing Electromagnetic Mechanism

IP.com Disclosure Number: IPCOM000236165D
Publication Date: 2014-Apr-10
Document File: 2 page(s) / 48K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method to harvest electrical power from automobiles to provide power to smart roadway sensors. The novel vehicular mechanism provides a charge to roadway sensors utilizing a magnetic field, when a vehicle is equipped with the proper magnetic system.

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Roadway Sensor Charger Utilizing Electromagnetic Mechanism

New smart roadway sensors, which are powered by street power and a mesh utility network, are being deployed on roads and highways. These interconnected and intelligent systems require a variety of sensor technologies that require power. Providing power to each sensor in individual cells or solar panels, or linking the sensors in a power grid is an expensive endeavor.

A more cost-effective method is needed to provide continuous power to smart roadway sensors.

The novel contribution is a method that utilizes passing automobiles as a source of power/charge for these sensors. It is known in the art that excess electrical charge is always generated (from gas powered engines), and batteries often cannot store it. This method uses the known technology of harvesting electricity from a magnetic field
(i.e. "charge by induction").

The novel vehicular mechanism provides a charge to roadway sensors utilizing a magnetic field, when a vehicle is equipped with the proper magnetic system. These magnetic systems in automobiles can be operated from strong natural earth magnets or from an electrical magnetic field generator that receives power from the vehicle's electrical system. As the automobile magnets approach the sensor , the magnets interact with the roadway magnets to create a magnetic field from which energy can be harvested and supplied to a sensor battery. At times of heavy traffic, with slow-moving vehicles, sensors might receive optimal charges. In addition, the method allows the interconnection of sensors to enable the central storage and sharing of the electrical charge from a single battery/cell.

The steps to implement the method to provide a magnetic charge through near field magnetism of a vehicle equipped with magnets follow:


1. Smart sensor is deployed in a roadway (e.g., a center-lane marker)

2. Sensor has receptor plates near it, which waits for an electrical charge to be

  present 3. When a car drives near/over the receptor plates,...