The invention relates to an online measurement system and method for multiple parameters of a wheel based on structured light. The measurement system comprises a wheel sensor, a first wheel online measurement device and a second wheel online measurement device, and is characterized in that both the first wheel online measurement device and the second wheel online measurement device comprise a tread structured light unit, a profile structured light unit and a two-dimensional image sensor. The tread structured light unit and the profile structured light unit project a profile contour curve and a tread contour curve on the wheel, the two-dimensional image sensor takes images, three-dimensional reconstruction is performed on the images to obtain tread contour information and profile contour information, and the wheel diameter, the wheel flange height and the wheel flange thickness are acquired according to the obtained contour information.

Evaluation of a rotating wheel is described. The evaluation utilizes information acquired by radiation reflecting off of one or more regions of the rotating wheel. An imaging device can acquire image data which is processed to evaluate the wheel. The radiation can comprise diffuse and/or coherent radiation. Image data for substantially an entire circumference of the wheel can be used in the evaluation.

A device for monitoring wear of a flange (1) of a roller (2) includes a peripheral rim (3) and intended to cooperate with a homologous flange (1 bis) of a roller (2bis) positioned face-to-face to interact with the head of a rolling rail (4). The device includes at least one first recess localized at the level of a peripheral line of constant radius on the flange (1) configured to be positioned at the level at which the point (7) of separation of the flange (1) relative to its homologue (1 bis) is the smallest.

This application relates to an overload and unbalanced load detecting system for a railway and a detecting method. This system includes at least one steel rail. A rail web of each steel rail is provided with two sampling points at two sides between every two adjacent rail sleepers, respectively, and the two sampling points on one side are symmetrically disposed about the steel rail with respect to the two sampling points on the other side. A fiber-optic sensitive element used for continuously measuring a load when a train passes through the two sampling points is obliquely fixed at each sampling point, and two fiber-optic sensitive elements on the same side of each steel rail are disposed at an angle of 90 with each other.

A sensor device includes an audio sensor and a wireless communication module. The audio sensor is configured to be mounted on a railroad vehicle. The audio sensor is configured to (i) monitor sounds emanating from one or more wheels of the railroad vehicle as the railroad vehicle moves along a track and (ii) generate sound data associated with the monitored sounds emanating from the one or more wheels. The wireless communication module is configured to transmit a broken wheel signal responsive to a determination that a portion of the generated sound data is indicative that a first one of the one or more wheels is damaged or broken.

A sensor device includes an audio sensor and a wireless communication module. The audio sensor is configured to be mounted on a railroad vehicle. The audio sensor is configured to (i) monitor sounds emanating from one or more wheels of the railroad vehicle as the railroad vehicle moves along a track and (ii) generate sound data associated with the monitored sounds emanating from the one or more wheels. The wireless communication module is configured to transmit a broken wheel signal responsive to a determination that a portion of the generated sound data is indicative that a first one of the one or more wheels is damaged or broken.

A system is provided for detecting an abnormal gait condition of a railway vehicle, including a first control chain and a second control chain connected to a digital output adapted to supply or not supply power to a load. The first control chain comprises a first sensor for detecting first detection data of movement of the railway vehicle, and a first control unit for receiving the first detection data, executing a first program for checking an abnormal gait and for controlling first electronic control means for supplying or not supplying power to the load. The second control chain comprises a second sensor for detecting second detection data of movement of the railway vehicle, and a second control unit for receiving the second detection data, executing a second program for checking an abnormal gait, and for controlling second electronic control means for supplying or not supplying power to the load.

A system is provided for detecting an abnormal gait condition of a railway vehicle, including a first control chain and a second control chain connected to a digital output adapted to supply or not supply power to a load. The first control chain comprises a first sensor for detecting first detection data of movement of the railway vehicle, and a first control unit for receiving the first detection data, executing a first program for checking an abnormal gait and for controlling first electronic control means for supplying or not supplying power to the load. The second control chain comprises a second sensor for detecting second detection data of movement of the railway vehicle, and a second control unit for receiving the second detection data, executing a second program for checking an abnormal gait, and for controlling second electronic control means for supplying or not supplying power to the load.

A double-robot system for detecting a flaw of a rim or a spoke includes a movable cart, a lifting platform, a lifting rotating mechanism, and robots. The lifting platform is movably connected to the movable cart in a vertical direction. The lifting rotating mechanism is disposed on the lifting platform. A wheel lifting arm is disposed on each of the left side and the right side of the lifting rotating mechanism. The wheel lifting arms are used for lap joint on a rail where a wheel in detection is located. One robot is fixedly connected to each of the front side and the rear side of the lifting rotating mechanism. Each robot is provided with a tread carrier. The lifting rotating mechanism is also provided with two inner carriers.

A double-robot system for detecting a flaw of a rim or a spoke includes a movable cart, a lifting platform, a lifting rotating mechanism, and robots. The lifting platform is movably connected to the movable cart in a vertical direction. The lifting rotating mechanism is disposed on the lifting platform. A wheel lifting arm is disposed on each of the left side and the right side of the lifting rotating mechanism. The wheel lifting arms are used for lap joint on a rail where a wheel in detection is located. One robot is fixedly connected to each of the front side and the rear side of the lifting rotating mechanism. Each robot is provided with a tread carrier. The lifting rotating mechanism is also provided with two inner carriers.