Railway and Trains Monitoring

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Bertram Booker
5 years ago
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ENERGY EFFICIENT EMBEDDED SYSTEMS Railway and Trains

detection and warning on tracks requiring service and

The WSN collects information on structural health and

to the data server enabling remote monitoring.

tests are buffer force, acceleration and deformation

The train wagon collision testing system is currently

The system can be mounted in one hour, and needed HW

Process Industrial Internet Specifying measurment

1 ENERGY EFFICIENT EMBEDDED SYSTEMS Railway and Trains Monitoring Railway health monitoring enables early detection and warning on tracks requiring service and repair before critical faults occur. The WSN collects information on structural health and behaviour of railway infrastructure, and transmits it to the data server enabling remote monitoring. VTT has also developed a completely wireless system for train wagon collision testing. The main parameters to measure during the collision tests are buffer force, acceleration and deformation on the wagon structure. The train wagon collision testing system is currently designed according to the European Wagon TSI directive. The system can be mounted in one hour, and needed HW is transportable in two briefcases. Process Industrial Internet Specifying measurment needs Design of measurement and monitoring system Installation of monitoring system and data analysis System design and productisation with R&D companies 14/10/2016 1

Vibration measurements Allow to measure the load on the rails without the

2 Railway and Train Monitoring Railway health monitoring Early warning on tracks requiring service and repair before critical faults. Vibration measurements Allow to measure the load on the rails without the actual test track Crash tests Test the buffing impact on the wagon construction 14/10/2016 2

Example: Train axel measurements During the introductory phase of the train axel the testing is done in accordance with standard to test the load exerted by the axel lines An

3 Example: Train axel measurements During the introductory phase of the train axel the testing is done in accordance with standard to test the load exerted by the axel lines An embedded wireless measurement system was installed on the bogies, which includes 4 wheels x 20 strain half-bridge, 2 khz sampling, preprocessing and wireless communication 14/10/2016 3

4 Crash tests

5 System design data VTT has developed a completely wireless system for train wagon collision testing The system is currently designed according the European Wagon TSI directive This directive describes the testing procedure for wagon testing The main characteristics to be measured are: Buffer forces, acceleration and deformation (force) on the wagon structure 14/10/2016 5

6 Cables installation: old system 14/10/2016 6

7 Technical details (1/2) The system includes following components: Buffer forces: 4 measurement units, based on strain gages Acceleration: 2 sensors, based on accelerometers Force sensors: on wagon body: up to 8 measurement that can be placed anywhere on the frame of the wagon; strain gage impedance from 120 ohms to 1 kohm Two light diodes which are measuring the collision speed and triggering the measurement One transceiver with USB connector: Connects the system to any portable PC with Windows operating system and changes this PC to a testing device (with application software). 14/10/2016 7

8 Technical details (2/2) Collision testing system:components&layout F+ A/D 1D ACC Buffer force: - antialiasing filter: RC - A/D-conversion 24bit, 4.8kHz Acceleration: - antialiasing filter: RC - A/D-conversion 16bit, 4.8kHz Master USB Control PC: - PC + Communication module (Master) - GUI - Measurement control - Data collections&storage Sensor Node + Battery 868MHz Sensor Node + Battery LS LS In Wagon: - 4 buffer sensors, straingage: half/ fullbridge 120/240 ohm - 2 1D accelleration: Colibrys/ SiliconDesign - 3 pc:s Sensornode: measurement, processing, transmission - 1 load sensor,3d-accelleration - up to 8 deformation sensors (strain gage) F1 F2 A1 F+ A/D 1D ACC SPI SPI F+ A/D A Sensor Node + Battery Sensor Node + ACC + Battery A3 Wagon under testing Sensor Node + Battery A F+ A/D SPI SPI 1D ACC F+ A/D A2 F3 F4 Light sensor: - 2 ps:s - based on reflectors on test wagon body (two in each) - triggering the measurement - speed measurement 14/10/2016 8

9 Buffer Force: Strain Gages 14/10/2016 9

10 Buffer Force ja Acceleration: sealed and rugged aluminum cases 14/10/

11 Measurement HW: Transportable in two briefcases

12 Fast installation: can be mounted in one hour: self powered with rechargeable batteries; 24h operation time with one charging

13 Additional information VTT Technical Research Centre of Finland Ltd Klaus Känsälä Senior Scientist Industrial IoT /10/

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