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US 12,612,087 B2Granted
Sensor systems and methods for monitoring environmental variables of a rail-bound vehicle
AssigneeIcomera AB
InventorJoel Bjurström
Life of this patent
Estimating the term…
Abstract
Sensor systems and methods for measuring environmental parameters associated with a rail-bound vehicle having a plurality of carriages are disclosed. In an embodiment, the sensor system includes a plurality of sensors arranged in a separate carriage of the rail-bound vehicle at a defined distance from a reference point within the rail-bound vehicle. The sensor system further includes a control unit configured to receive measurement signals and time-shift the received measurement signals based on the defined distance and a velocity of the rail-bound vehicle to determine whether an event measured by the plurality of sensors is present at the same point in time in two or more signals of a modified (time-shifted) set of signals.
Claims17
A sensor system comprising:
- a rail-bound vehicle having a plurality of carriages;
- a plurality of sensors comprising a plurality of accelerometers, each accelerometer being arranged in a separate carriage of said rail-bound vehicle at a defined distance from a reference point within said rail-bound vehicle, and each accelerometer being configured to generate a vibration measurement signal based on detection of a vibration of an associated carriage, the vibration measurement signal being related to accelerations along a substantially vertical axis;
- a velocity measurement device configured to determine a velocity of said rail-bound vehicle;
- a control unit configured to:
- receive the vibration measurement signal from each of said plurality of accelerometers;
- time-shifting the received vibration measurement signals based on said velocity of the rail-bound vehicle and said defined distance between the accelerometers and said reference point by obtaining a quotient of said defined distance over the velocity of the rail-bound vehicle in order to form a modified set of vibration signals, such that a vibration measurement made by each accelerometer at the same geographical location appears to have occurred simultaneously;
- determine whether an event measured by said plurality of accelerometers is present at the same point in time in at least two signals of said modified set of vibration signals-;
- and
- determine, based on the determination of such an event, the presence of a damaged section of the railway track.
6 more elements
A sensor system comprising:
- a rail-bound vehicle having a plurality of carriages;
- a plurality of sensors comprising a plurality of accelerometers and a plurality of acoustic sensors, all accelerometers and all acoustic sensors, respectively, being arranged in separate carriages of said rail-bound vehicle at defined distances from a reference point within said rail-bound vehicle, each accelerometer being configured to generate a vibration measurement signal based on detection of a vibration of an associated carriage and each acoustic sensor being configured to generate a sound detection signal based on sound measurements in an associated carriage;
- a velocity measurement device configured to determine a velocity of said rail-bound vehicle;
- a control unit configured to:
- receive the vibration measurement signal from each of said plurality of accelerometers and the sound detection signal from each of said plurality of acoustic sensors;
- time-shifting the received vibration measurement signals and the received sound detection signals based on said velocity of the rail-bound vehicle and said defined distance between the accelerometers an acoustic sensors and said reference point respectively by obtaining a quotient of said defined distances over the velocity of the rail-bound vehicle in order to form modified sets of vibration signals and sound detection signals, such that a vibration measurement made by each accelerometer and a sound measurement made by each acoustic sensors at the same geographical locations appears to have occurred simultaneously;
- and
- determine whether an event measured by said plurality of accelerometers is present at the same point in time in at least two signals of said modified set of vibration signals and an event measured by said plurality of acoustic sensors is present at the same point in time in at least two signals of said modified set of sound detection signals-;
- and
- determine, based on the determination of such an event, the presence of a damaged section of the railway track.
7 more elements
Dependencies are inferred from the claim text.