Piezoelectric Power Generation Energy Conversion And Storage Technology

For Heavy Haul Train danger detection system using wireless sensor network nodes inconvenience use wired power supply and battery replacement hard features,Research the vibration energy generated in the process of Train in motion using of the piezoelectric effect of piezoelectric material is converted to electrical energy storage and Utilize, Realize Micro-power device Do not require maintenance forever In theory.due to Environment energy density intensity and Distribution constraints, Combined with wireless sensor network node heavy instantaneous power,small average power characteristics.Through the new design of piezoelectric power generation device to increase power generation, And novel power conditioning circuit and the storage medium to improve the efficiency of energy storage.Through Research on the piezoelectric transducer electrical equivalent model and characteristics of electricity generated, Using circuit simulation software ORCAD, Research on the power conditioning circuit, energy storage media, regulators charging circuit's theory and simulation.Firstly, Analysis of Piezoelectric materials and characteristics of Piezoelectric vibrator, Selection of suitable piezoelectric material and Support form for the design of piezoelectric vibrator. Power Device reduced to mass-spring-damper system.Establish the transfer function of Mechanical system to electrical system,Export piezoelectric transducer output expression.Establish electrical equivalent model.Analysis of the impact load on the output power.Secondly through research on Piezoelectric output characteristics of power, Numerical simulation of the theoretical model analysis.Which can be carried out with circuit simulation software analysis circuit, Research on Piezoelectric vibrator with the feasibility of different storage media storage, Using super capacitor high capacity, characteristics of high efficiency of charge and discharge as the primary storage charge. When accumulated to a certain amount of charge that is charged through the voltage regulator circuit for charging rechargeable batteries,while Battery output energy stability.Finally, for the efficiency of energy transfer and storage issues, Compared the characteristics of the rectifier circuit. Design triple voltage rectification circuit for improve the efficiency of energy transfer. Selected MAX1672 regulator charging circuit is designed to achieve the ultimate storage and use of energy. Using simulation software simulation of the entire system.Results show that the circuit can be rechargeable batteries, In order to achieve vibration energy to electrical energy conversion and utility.