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Design and Fabrication of Weigh in Motion System for Railway Vehicles

Pourjoula, Mohammad | 2017

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 49822 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical Engineering
  6. Advisor(s): Saadat Foumani, Mahmud
  7. Abstract:
  8. Railroads should be well maintained for safe and efficient operation. The most important reason for the failure of railways is overload and asymmetric load on them. Also, the proper interval for repairs should be adjusted to fit the load crossed over. In order to carry out all these tasks, a constant observation of the weight on the rails must take place. Current dynamic weighing systems are costly. In addition, the installation of these systems is time-consuming and causes permanent damage to the rails. On the other hand, some of the cheaper models of weighing systems require full stop and static weighing, which practically does not work at all, especially on busy rails due to delays. The purpose of this research is to achieve a relatively inexpensive system that measures the weight of the train without damage to the rails. The system and all its parts must first be designed and analyzed on a computer. Then each section is made and tested. Then, the sections are assembled to each other. The designed system is mounted alongside two tracks and raise each wheel by 5 mm. This creates an oscillating rise in the train, which should be carefully monitored and averaged. Weight readings are performed by two load cell sensors on each side. Sensor data is also digitized by a 12-bit A2D and stored on a memory card in place without the need for power from outside. stored Data would be transferred to the computer and analyzed and eventually and the train weight is expressed. In this research, after making the device, the static calibration of the sensor coefficients and the static performance of the whole system were evaluated
  9. Keywords:
  10. Dynamic Weighing ; Train Weight in Motion ; Calibrating Dynamic Weighing System ; Monitoring Railway Vehicles

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