Research On Energy Management Technology For Environmental Energy Harvesting

In the application fields such as Wireless Sensor Networks(WSNs)and wearable devices,the service life of products such as sensor nodes and wearable implantable devices is limited by the service life of their energy storage devices.As a solution to this problem,the application of environmental energy harvesting technology has led to the replacement of the battery of the corresponding product and extended the service life of the product.Environmental energy harvesting technology can use mechanical energy,thermal energy,wind energy,solar energy and other energy conversion in the environment to generate electrical energy,which has the characteristics of a wide range of energy sources.However,due to the instability of the energy source in the environment and the low efficiency of energy conversion and collection,the environmental energy collection technology has not been able to power the electronic products to complete continuous and effective work.This problem can be solved by increasing environmental energy utilization and reducing load power consumption.Energy utilization refers to the efficiency of energy collection for the effective work of the load.Increasing energy utilization can be achieved by improving energy collection devices,energy storage structures,energy management schemes and other methods.This essay deals with the problem of reducing the power consumption of the load and using energy management schemes to improve the energy supply structure to deal with the problem that environmental energy harvesting technology has not yet been able to provide power for electronic products to complete continuous and effective work.After the study of energy harvesting management technology,we used the energy management strategy design and low power consumption energy management circuit to improve energy utilization.The energy supply model of energy harvesting management technology is analyzed.Based on the research of environmental micro-energy harvesting technology,we combined environmental micro-energy harvesting technology with the theory of low power non-uniform signal sampling and set up a heart rate model based on environmental energy harvesting.Based on the environmental energy collection heart rate sampling model,we completed the local timing and power-down storage design,used system,circuit,device and other low-power technologies to optimize the power consumption of microelectronic products,and then completed the heart rate based on environmental energy collection Sampling system construction.The main content of this article is as follows:1.We analyzed the necessity of environmental energy harvesting technology research,and summarized the research status and technological development trend of environmental micro-energy harvesting system.This essay focused on the research status of signal sampling theory,and discussed the theoretical framework of non-uniform signal sampling and the restoration of non-uniform sampling signals.2.This essay introduced the design of environmental micro-energy collection management circuit based on piezoelectric vibration energy collection,energy management strategy and the design of corresponding energy management circuit,and analyzed energy supply model,then combined environmental micro-energy harvesting technology with non-uniform sampling theory to set up a heart rate model based on the collection of environmental energy.3.On the basis of the heart rate model based on environmental energy collection,the real-time clock and ferroelectric storage technology are used to complete the local timing and power-down storage design,the local timing version of the heart rate sampling system based on environmental energy collection is completed,and the overall system performance Experimental verification.