Abstract: Truck tractors in a transportation fleet include a transponder that transmits a unique tractor identifier to a connected trailer using a Power Line Communication (PLC) bus device. The information transmitted typically includes a manufacturing unique ID for the tractor and an optional user defined ID. The user defined ID may include a fleet division code. The tractor ID and/or fleet ID codes determine how the trailer is hooked up. In particular, with detection of a connected state signal from the PLC bus, together with receipt of tractor identification code(s) from the tractor, the trailer tracking device can now communicate the coupling event information to a centralized location, such as via a cellular telephone connection.

Abstract: A cargo detector for use in a trailer that includes an ultrasonic transducer for covering the entire interior area of the trailer. In particular, the cargo detector has three modes including short range, long range, and proximity range, and can detect cargoes located flush against a front or rear wall of the trailer.

Abstract: A system and method for describing local area geo-reference features and landmarks in providing high resolution asset location information. Geo-image data is integrated to a mapping application and geo-reference data to add more detailed scale levels to the map. The geo-image data includes geo-images and its features to provide more detailed references to the asset and support the larger references of the geo-reference data. To describe a geo-reference landmark, an original landmark representation is selected with a center point and a radius. The asset location points located at the original landmark representation are compiled along with the asset location points generated by events occurring at the landmark to create a point set. The point set replaces the original landmark representation when a prescribed number of points is reached. The asset location points that are within a specified distance from any of the points in the point set are added to the point set to complete the landmark representation.

Abstract: A cargo detector for use in a trailer that includes an ultrasonic transducer for covering the entire interior area of the trailer. In particular, the cargo detector has three modes including short range, long range, and proximity range, and can detect cargoes located flush against a front or rear wall of the trailer.

Abstract: A system for tracking and monitoring the intermodal status of cargo trailers. In addition to the information provided by a Global Positioning System (GPS) unit, the system monitors the status of various sensors on the trailer. The GPS unit provides the location and velocity of a trailer. A wheel monitoring unit provides the status of the wheels of the trailer, specifically whether there is rotation of the wheels or not. Anti-lock braking systems are used to provide signal information indicative of the wheel rotation status. An independent wheel rotation sensor is also used to provide the wheel rotation status. A computer processor determines the intermodal movement status of the trailer using the wheel rotation status and the location and velocity information.

Abstract: A system and method for describing local area geo-reference features and landmarks in providing high resolution asset location information. Geo-image data is integrated to a mapping application and geo-reference data to add more detailed scale levels to the map. The geo-image data includes geo-images and its features to provide more detailed references to the asset and support the larger references of the geo-reference data. To describe a geo-reference landmark, an original landmark representation is selected with a center point and a radius. The asset location points located at the original landmark representation are compiled along with the asset location points generated by events occurring at the landmark to create a point set. The point set replaces the original landmark representation when a prescribed number of points is reached. The asset location points that are within a specified distance from any of the points in the point set are added to the point set to complete the landmark representation.

Abstract: A system for tracking and monitoring the intermodal status of cargo trailers. In addition to the information provided by a Global Positioning System (GPS) unit, the system monitors the status of various sensors on the trailer. The GPS unit provides the location and velocity of a trailer. A wheel monitoring unit provides the status of the wheels of the trailer, specifically whether there is rotation of the wheels or not. Anti-lock braking systems are used to provide signal information indicative of the wheel rotation status. An independent wheel rotation sensor is also used to provide the wheel rotation status. A computer processor determines the intermodal movement status of the trailer using the wheel rotation status and the location and velocity information.

Abstract: An automated exchange for determining the availability of mobile assets that are shareable among mobile asset users. The automated exchange includes a plurality of mobile asset sources for providing mobile assets of one or more types, a data center for providing the availability status of each mobile asset, and asset status and availability inputs having communication connection to the data center. The asset status and availability inputs include mobile asset sensors, asset monitoring sensors, manual inputs, and asset status and availability record. A processor located at the data center determines the availability of each mobile asset using the status and availability input data. The processor also receives and processes requests for available mobile assets. A user computer having a communication link to the data center provides user access to information relating to the availability of the mobile assets and user interface to request for available mobile assets.

Abstract: HF modems operate at the HF licensed frequency bands ranging from 3 to 25 MHz. This invention deals with a Quasi CDMA application of a low bit rate modem operating at a rate of 125 bps. This low rate modem has been operational for some time now, and is based on the MIL-STD 188-110A waveforms.

Abstract: A system for tracking and monitoring the intermodal status of cargo trailers. In addition to the information provided by a Global Positioning System (GPS) unit, the system monitors the status of various sensors on the trailer. The GPS unit provides the location and velocity of a trailer. A wheel monitoring unit provides the status of the wheels of the trailer, specifically whether there is rotation of the wheels or not. Anti-lock braking systems are used to provide signal information indicative of the wheel rotation status. An independent wheel rotation sensor is also used to provide the wheel rotation status. A computer processor determines the intermodal movement status of the trailer using the wheel rotation status and the location and velocity information.