چكيده به لاتين
In rail transport systems, various sensors are used to control the trains transport , the health of the rails and the ballast. These sensors can be used to measure various parameters of running trains, such as speed, transit time, axial load, number of axles passing, also this sensor can be used for send report information of rail health and railway bridge and information indicating the condition of railways and etc to central railway station. In cases where the location is out of reach or the cabling process is costly, wireless network sensors are used. The power supply of these sensors is an important issue, the first of which is the use of electric batteries. However, after a certain period of time, these batteries need repair and maintenance, which can be costly. Energy Harvesting Mechanisms (Energy Harvesting) are ways to provide energy to the consumer by collecting and storing wasted energy in the environment. Piezoelectric ceramics are one of the most common methods for absorbing mechanical energy in the environment such as vibration, movement or deformation of objects and converting it to electrical energy. In this research, the method of installing a piezoelectric element under the train rail pad and calculating the electrical energy obtainable for the use of measuring and signaling equipment is discussed. The survey was conducted using a field test on a 1/5 scale line tester and the results of articles published in authoritative journals were used for validation. The results showed that the electrical energy obtainable from the piezo installation at the rail pad location is capable of supplying the required energy to the sensor systems.
