Research On Structural Design And Circuit Optimization Of Piezoelectric Self-powered Remote Control Device

Wireless remote control devices are widely used in modern life and have become indispensable portable electronic products.In addition to controlling home electronic products,wireless remote control devices are also widely used in the military,industrial,and automotive industries.For a long time,the power sources of wireless remote control devices are traditional chemical batteries,but traditional chemical batteries are large in size,inconvenient to replace in certain working environments,and improper recycling of waste batteries can cause serious environmental pollution.With the integration of electronic products and the development of radio technology,people have begun to look for new energy supply devices.At present,among the existing types of energy recovery technologies(solar,electromagnetic,electrostatic,and piezoelectric),the positive piezoelectric effect based on piezoelectric materials and its vibration energy recovery technology have the advantages of simple structure,high energy density,and sustainable Has been widely studied and applied.This paper mainly focuses on the energy generation efficiency of the piezoelectric self-powered remote control device under low frequency vibration and the performance of its energy harvesting circuit.Different piezoelectric power generation devices are designed and optimized.A piezoelectric selfpowered remote control.The device is simulated and tested.This paper first introduces the main models used in piezoelectric ceramic materials and piezoelectric vibrators.Due to the limitations and deficiencies of the pin force model and the improved pin force model,accurate analysis results cannot be obtained.A variety of influencing factors,the Euler-Bernoulli Model that is closest to the actual state of the piezoelectric vibrator.Then,the Euler-Bernoulli Model with high accuracy was used to model and analyze the cantilever single-and double-crystal piezoelectric vibrators,and the structure and size of the piezoelectric vibrators were optimized.In order to improve the energy collection efficiency of the piezoelectric energy harvesting circuit,an electrical equivalent model of the piezoelectric energy harvester is established,the energy conversion device is represented by an equivalent circuit,and the more complicated electromechanical coupling relationship is converted into a single circuit problem.Analysis to transform electrical and mechanical problems into electrical problems.Then,the current mature piezoelectric energy harvesting circuits are compared and analyzed.Traditional synchronous charge extraction circuits usually require external power supply for the control of synchronous switches.Self-powered synchronous charge extraction circuits can automatically detect the output voltage of the piezoelectric sheet through the self-powered module,and then close the switch from the piezoelectric transducer Extract energy.Then use the artificial bee colony optimization algorithm to optimize the parameters of the energy harvesting circuit.Based on the above theoretical and simulation analysis,a testing platform for piezoelectric remote control devices is set up,and the output results of the piezoelectric energy harvesting device are tested.The experimental results are consistent with the simulation results.Then,the load-collecting energy harvesting circuit is simulated and tested.The experimental results verify that the optimized energy harvesting circuit has better energy conversion and storage efficiency than other circuits.Then,the overall structure of the piezoelectric remote control device is designed and manufactured by a 3D printer,and finally its performance is tested.