A railroad crossing warning circuit includes a lamp and a signal generator for generating a first signal of a selected frequency. Divider circuitry divides the frequency of the signal to generate second signal at a flashing frequency. A switch responsive to the second signal controls current flow through the lamp and cause the lamp to flash at the flashing frequency.

Aspects of the disclosed embodiments generally relate to a current monitoring and alarm system for a railroad crossing gate. The system is capable of determining that the gate is functioning properly or not. In addition, the system can issue an alarm or provide some other indicator when the gate is not functioning properly or is being subjected to excessive loading.

A smart lamp system and method for monitoring a status of LEDs. The system can provide LED status monitoring using a logic controller communicating with at least one strip of LEDs. The system can utilize the logic controller to assign a unique identifier (ID) to the at least one strip of LEDs based on a physical position of a plurality of dual-inline package (DIP) switches incorporated within a smart lamp housing. The system can provide a hardware architecture to interface the logic controller with a power-line communication (PLC) transceiver. The system can establish a communication protocol between the PLC transceiver and a PLC receiver to efficiently communicate the statuses of the LEDs. The logic controller can generate a payload including a binary representation of the unique ID of the smart lamp and the statuses of the LEDs and transmit the payload to the PLC transceiver.

A crossing gate mechanism includes a gate mechanism enclosure defining an interior space, external wires located substantially outside the gate mechanism enclosure, and a terminal board positioned within the interior space of the gate mechanism enclosure. The external wires are connected to the terminal board. The terminal board is coupled to and swingable relative to the gate mechanism enclosure.

A crossing gate mechanism includes a gate mechanism enclosure, electrical components inside the gate mechanism enclosure, and a controller inside the gate mechanism enclosure. The controller is connected to and configured to monitor and/or control the electrical components. The controller includes an operator panel for receiving input from a user. In addition, the controller has a user interface displayed by the operator panel. The controller is operable to present information associated with the electrical components on the user interface.

A crossing gate mechanism includes a gate mechanism enclosure defining an interior space, external wires located substantially outside the gate mechanism enclosure, and a terminal board positioned within the interior space of the gate mechanism enclosure. The external wires are connected to the terminal board. The terminal board is coupled to and swingable relative to the gate mechanism enclosure.

A crossing gate mechanism includes a swingable gate arm, a rotatable gate arm shaft fixed to the gate arm, and an electronic sensor assembly coupled to the gate arm shaft. Rotation of the gate arm shaft corresponds with swinging of the gate arm. The electronic sensor assembly senses an angular position of the gate arm shaft and transmits a position signal corresponding thereto. The electronic sensor assembly includes a driving element that is attached to the gate arm shaft to rotate therewith. the electronic sensor assembly also includes a driven element that is driven by the driving element such that rotation of the gate arm shaft causes the driven element to rotate. The electronic sensor assembly is configured to generate the position signal based on a position of the gate arm shaft.

A crossing gate mechanism includes a gate mechanism enclosure defining an interior space, external wires located substantially outside the gate mechanism enclosure, and a terminal board positioned within the interior space of the gate mechanism enclosure. The external wires are connected to the terminal board. The terminal board is coupled to and swingable relative to the gate mechanism enclosure.

A system includes at least one signal light having at least one lamp. The system further includes a control device electrically connected to the at least one lamp by a conductive cable. The at least one lamp is configured to flash in response to the loss of an audio signal generated by the control device.

A smart lamp system and method for monitoring a status of LEDs. The system can provide LED status monitoring using a logic controller communicating with at least one strip of LEDs. The system can utilize the logic controller to assign a unique identifier (ID) to the at least one strip of LEDs based on a physical position of a plurality of dual-inline package (DIP) switches incorporated within a smart lamp housing. The system can provide a hardware architecture to interface the logic controller with a power-line communication (PLC) transceiver. The system can establish a communication protocol between the PLC transceiver and a PLC receiver to efficiently communicate the statuses of the LEDs. The logic controller can generate a payload including a binary representation of the unique ID of the smart lamp and the statuses of the LEDs and transmit the payload to the PLC transceiver.