A monitoring method and system monitor a transmitted current that is injected into conductive components of a route traveled by vehicle systems, monitor a received current that represents a portion of the transmitted current that is conducted through the conductive components of the route, examine changes in the transmitted and/or received current over time to determine when the vehicle systems are on the route between a first location where the transmitted current is injected into the conductive components and a second location where the received current is monitored, and examine the changes in the transmitted and/or received currents. The changes are examined to identify (a) a contaminated portion of a surface on which the route is disposed, (b) a foreign object other than the vehicle systems that is contacting the route, and/or (c) a damaged or broken portion of at least one of the conductive components of the route.

A monitoring system for a light emitting diode (LED) signal (100) includes optical detectors (120) for measuring a light output of LEDs (112, 114), a first processing unit (124) in communication with the plurality of optical detectors (120) and configured to receive and process measurement data of the light output from the plurality of optical detectors (120), and a first switching element (130) operably coupled to the first processing unit (124). The first processing unit (124) is further configured to transmit a control signal based on the measurement data of the light output of the plurality of LEDs (112, 114) to the first switching element (130) to disconnect a reference load (150) by switching from a first state to a second state when the light output is less than a predefined threshold value, wherein the second state of the first switching element (130) is stored in a storage medium (148).

An abnormality detection device includes: a measurement value acquiring unit configured to acquire input accelerations of n vehicles traveling along a track; and an abnormality determination unit configured to determine abnormality in the track at a track position at which the input accelerations are equal to or more than a threshold value in a case where it has detected that the input accelerations for all of the n vehicles are equal to or more than a threshold value, and determine abnormality in any one or a plurality of vehicles out of n1 or less vehicles in the n vehicles at which the input accelerations are equal to or more than the threshold value in a case where it has detected that the input accelerations for the any one or a plurality of vehicles out of the n1 or less vehicles in the n vehicles are equal to or more than the threshold value.

An abnormality detection device includes: a measurement value acquiring unit configured to acquire input accelerations of n vehicles traveling along a track; and an abnormality determination unit configured to determine abnormality in the track at a track position at which the input accelerations are equal to or more than a threshold value in a case where it has detected that the input accelerations for all of the n vehicles are equal to or more than a threshold value, and determine abnormality in any one or a plurality of vehicles out of n1 or less vehicles in the n vehicles at which the input accelerations are equal to or more than the threshold value in a case where it has detected that the input accelerations for the any one or a plurality of vehicles out of the n1 or less vehicles in the n vehicles are equal to or more than the threshold value.

An electronic tag device for rail traffic concrete prefabricated parts includes: a steel bracket; wherein the steel bracket is n-shaped and comprises a left foot, a right foot and a beam which are integrated into one body; a rebar clamp made of a metal plate is provided on bottoms of the left foot and the right foot respectively; a tag holder is provided on a top of the beam; a top end of the tag holder has a groove; a metal-resistant electronic tag is place inside the groove; a waterproof end cap is put on the tag holder; an internal shape of the waterproof end cap matches the tag holder; both the waterproof end cap and the tag holder adopt a thermoplastic material.

An electronic tag device for rail traffic concrete prefabricated parts includes: a steel bracket; wherein the steel bracket is n-shaped and comprises a left foot, a right foot and a beam which are integrated into one body; a rebar clamp made of a metal plate is provided on bottoms of the left foot and the right foot respectively; a tag holder is provided on a top of the beam; a top end of the tag holder has a groove; a metal-resistant electronic tag is place inside the groove; a waterproof end cap is put on the tag holder; an internal shape of the waterproof end cap matches the tag holder; both the waterproof end cap and the tag holder adopt a thermoplastic material.

A monitoring method and system monitor a transmitted current that is injected into conductive components of a route traveled by vehicle systems, monitor a received current that represents a portion of the transmitted current that is conducted through the conductive components of the route, examine changes in the transmitted and/or received current over time to determine when the vehicle systems are on the route between a first location where the transmitted current is injected into the conductive components and a second location where the received current is monitored, and examine the changes in the transmitted and/or received currents. The changes are examined to identify (a) a contaminated portion of a surface on which the route is disposed, (b) a foreign object other than the vehicle systems that is contacting the route, and/or (c) a damaged or broken portion of at least one of the conductive components of the route.

A monitoring method and system monitor a transmitted current that is injected into conductive components of a route traveled by vehicle systems, monitor a received current that represents a portion of the transmitted current that is conducted through the conductive components of the route, examine changes in the transmitted and/or received current over time to determine when the vehicle systems are on the route between a first location where the transmitted current is injected into the conductive components and a second location where the received current is monitored, and examine the changes in the transmitted and/or received currents. The changes are examined to identify (a) a contaminated portion of a surface on which the route is disposed, (b) a foreign object other than the vehicle systems that is contacting the route, and/or (c) a damaged or broken portion of at least one of the conductive components of the route.

A safeguarding system for an emergency fish-plate connector is fastened to a rail base of the rail and has a distance measuring device for supplying a measuring value registering a distance a between the emergency fish-plate connector and the safeguarding system. For transmission of the detected measuring values and of an identifying signalenabling a locally unambiguous correlation of the emergency fish-plate connector with regard to the trackto a control station, the safeguarding system is equipped with a radio device.

The calculation of the speed of a moving train is critical to being able to capture high speed resolution images of the undercarriage of a moving train using a camera in an associated application. The measurement must be extremely accurate and in real time so that an appropriately placed camera can capture images and transmit those images to a remote location.