Research On The New Electromagnetic Vibrational Energy Harvesting Device For Swaying Cables

In the mountainous power transmission project cableway,the distalis power supply blind area tend to use the wireless sensor equipment to monitor in real time to ensure the safe operation of the cable.Considering the inconvenience of replacing batteries in mountain areas,it is necessary to find a continuous power supply instead of a chemical battery to power wireless sensor devices.Given the ubiquitous vibrational energy in the engineering environment,considering converting it into electrical energy not only solves the problem of continuous power supply of the wireless sensor device,but also inhibits the vibration of the engineering cableway and improves the engineering efficiency and operational safety.The main contents of this paper are as follows:1.The research status of energy harvesting devices at home and abroad was reviewed,and the application conditions of various energy harvesting devices were analyzed.According to the vibration characteristics of suspension cables,Y-shaped rack layout were finally selected by comparing and analyzing the vibrations that can be converted by different rack layout methods.Modular design thinking is used to complete the design of vibration energy input module,transmission module,energy conversion module,energy storage module of the Y-shaped energy harvesting device.2.The one-way gear device of the Y-shaped energy harvesting device terminal is modeled,and the input vibration is simulated by Matlab software to calculate the average energy conversion rate of the one-way gear device.The torsional vibration mechanical model of the transmission system is established for two different transmission paths,the torsional vibration mechanics equation is derived and get the natural frequency of the torsional vibration.A schematic structural diagram of the Y-shaped rack device is established to solve the functional relationship between the suspension vibration in the plane of the device and the rack meshing motion of the three one-way gear devices;Using Matlab to simulate the vibration of the cable in different directions of the device plane,get the vibration pattern converted by traditional energy collection devices and Y-shaped energy collection devices.Finally,calculate the electric energy converted by Y-shaped energy harvesting device and the energy conversion ratio of a Y-shaped energy collection device to a conventional energy collection device under different cable vibration conditions.3.Taking power transmission project cableway as the research object,a simplified load-carrying cable vibration model was established to solve the initial transverse vibration equation of the cable after the cargo was unloaded;Derive the forced vibration equation based on the damping force of the Y-shaped energy collection device.The initial transverse vibration equation of the cable and Mathematica software is used to solve the damping force variation curve of the energy collection device,the vibration variation curve of the suspension cable,the motor power variation curve,and the power conversion curve of the motor.