NeuRAIL: MOCV, optical Vertical-Load Measurement
The MOCV application, developed in collaboration with the Polytechnic University of Milan, enables NeuRAIL to measure the vertical load of each wheel during the transit of a train running at a controlled speed.
Based on the strain the passage of a wheel induced upon the track, the measurement is read by passive, extremely sensitive and long-life fiber-optic sensors interrogated by an acquiring laser at a frequency of 1kHz.
MOCV: competitive advantages and features
EASY TO INSTALL: thanks to anchoring with high-strength magnets, sensors can be installed without replacing the track or conducting invasive operations on the existing track
REMOVABLE using a simple mechanical tool; leaves no "traces" on the rail
AVAILABLE FOR LONG DISTANCES from the site of acquisition
REDOUNDED: the system can operate even following a single or double failure on the sensor network
features under DEVELOPMENT
Studies are underway at various maturity levels on the following topics:
- Reduction of measurement error to less than 2% on a single axis
- Deep-Learning study on the characterization of waveforms in transit to identify wheel anomalies
MOCV: Composition and installation
MOCV consists of 12 (or more) sensors installed on a flat, straight section of rail over a 15-20 meter track length. The track must meet the structural and geometric requirements stated in EN15654-1.
The basic configuration envisages two sensor-pair triplets. This configuration also allows the convoy speed to be measured with an accuracy of 0.2km/h.
The MOCV system is designed as per UNI EN 15654-1 and can be certified in situ as per UNI EN 15654-3.
MOCV: Data and Interface
GRAPHIC OUTPUT. gray: left wheel weight; violet: right wheel weight. Sky blue: individual wagons; blue: Front/rear bogie.
Load is estimated implementing a machine learning algorithm validated in the field as per EN15654-3.
The measurements provided by the application comply with EN 15654-1:
- vertical load per wheel
- axle load
- sum of axial loads per bogie
- wagon Weight
- weight of the entire train
Measurements related to the wagon's axial and longitudinal imbalance are also possible.
MOCV: INSTALLATION AND TESTING
Through the preliminary static weight of the train used in the testing and certification phases, it was possible to compile a data base for the objective comparison of the weights subsequently detected by MOCV at the passage of the congoglio at the various speeds foreseen.
MOCV: Data sheet
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