Abstract: A signal detection system for use with a signaling system is disclosed, the signal detection system comprising a plurality of electrical terminals including a source terminal and an output terminal, the output terminal being connected to a signaling device. An auxiliary terminal electrically coupled to at least one of the plurality of electrical terminals is provided. A current sensor is coupled to the auxiliary terminal for detecting an electrical signal for controlling the signaling device. The current sensor generating an output signal in response to the detection of the electrical signal for controlling the signaling device for monitoring the status of the signaling device. Also disclosed is a method for installing a signal detection system in a wayside signaling system including a signaling device for monitoring a status of the signaling device. An apparatus for connecting a current sensor to a signaling device is also disclosed.

Abstract: A system and method provides for expanded monitoring and control of a railroad wayside interlocking system that monitors a plurality of track side and train systems and controls a plurality of train and track control devices with a primary control panel system communicating with the interlocking system over a first communication interface and with a remote control panel over a second communication interface, receiving interlocking status messages for visually displaying a current status state of the monitored systems, replicating the received interlocking status messages, determining a current status state for the control devices, communicating replicated interlocking status messages or the determined current status state over the second communication interface to one or more remote control panel systems, and receiving requests from the one or more remote control panel systems, which are then transmitted to the wayside interlocking system by the primary control panel system.

Abstract: There is provided a voltage or current sensing device. An exemplary voltage or current sensing device includes a drive circuitry configured to deliver a drive current to a magnetic core operably coupled with a conductor, for driving the core to cyclical magnetic saturation. The device also includes sense circuitry configured to receive a voltage signal corresponding to an application current in the conductor. The device also includes signal processing circuitry configured to sample the voltage signal, wherein a first sample is in phase with the drive current and a second sample is out of phase with the drive current. The device also includes a feedback loop configured to deliver a compensation current to the magnetic core, wherein the compensation current is configured to balance the magnetic core and wherein the compensation current is based at least in part on the first sample in phase with the drive current.

Abstract: A system and method provides for expanded monitoring and control of a railroad wayside interlocking system that monitors a plurality of track side and train systems and controls a plurality of train and track control devices with a primary control panel system communicating with the interlocking system over a first communication interface and with a remote control panel over a second communication interface, receiving interlocking status messages for visually displaying a current status state of the monitored systems, replicating the received interlocking status messages, determining a current status state for the control devices, communicating replicated interlocking status messages or the determined current status state over the second communication interface to one or more remote control panel systems, and receiving requests from the one or more remote control panel systems, which are then transmitted to the wayside interlocking system by the primary control panel system.

Abstract: A signal detection system for use with a signaling system is disclosed, the signal detection system comprising a plurality of electrical terminals including a source terminal and an output terminal, the output terminal being connected to a signaling device. An auxiliary terminal electrically coupled to at least one of the plurality of electrical terminals is provided. A current sensor is coupled to the auxiliary terminal for detecting an electrical signal for controlling the signaling device. The current sensor generating an output signal in response to the detection of the electrical signal for controlling the signaling device for monitoring the status of the signaling device. Also disclosed is a method for installing a signal detection system in a wayside signaling system including a signaling device for monitoring a status of the signaling device. An apparatus for connecting a current sensor to a signaling device is also disclosed.

Abstract: There is provided a voltage or current sensing device. An exemplary voltage or current sensing device includes a drive circuitry configured to deliver a drive current to a magnetic core operably coupled with a conductor, for driving the core to cyclical magnetic saturation. The device also includes sense circuitry configured to receive a voltage signal corresponding to an application current in the conductor. The device also includes signal processing circuitry configured to sample the voltage signal, wherein a first sample is in phase with the drive current and a second sample is out of phase with the drive current. The device also includes a feedback loop configured to deliver a compensation current to the magnetic core, wherein the compensation current is configured to balance the magnetic core and wherein the compensation current is based at least in part on the first sample in phase with the drive current.

Abstract: In a transportation system (rail system or otherwise), a wayside device potentially operates in a plurality of operational modes. The wayside device is outfitted with an interface system for interfacing the wayside signal device with a vehicle control system. The interface system determines the present operational mode of the wayside device and independently communicates information relating to the determined present operational mode to the vehicle control system. The vehicle control system may control the vehicle based on the information relating to the determined present operational mode. The interface system includes functionality for validating the determined present operational mode prior to transmission of the information to the vehicle control system, to ensure that the vehicle control system is provided with correct and/or current information. The wayside device may be a wayside signal device whose operational modes (as determined by the interface system) are signal aspects conveyed to a vehicle.