Design And Implementation Of Low Power Green Node At The End Of Internet Of Things

The Internet of things has a wide range of applications,especially in a wide range of applications in the field.It is composed of a variety of sensor nodes,gateway and terminal,the design of a efficient sensor node can directly affect the entire network life cycle.And network lifetime is an important index of wireless sensor networks,and how to prolong the network lifetime has become a research hotspot.In the aspect of prolonging the network life cycle,this paper makes two improvements on the basis of the existing research.On the one hand,in the power supply of sensor nodes,it uses the traditional ordinary battery power supply no longer,but the solar photovoltaic battery and the storage battery are combined.On the other hand,it designs a new energy aware routing protocol-MAPA-MIPC.The protocol is combined with the solar prediction algorithm,according to the characteristics of node energy of each link,to calculate the optimal data transmission path.In the solar energy prediction algorithm,a new prediction algorithm is used which is based on the weather conditions of the autoregressive moving average(AR-WCMA)model.This algorithm takes into account the seasonal variation and abrupt change of solar energy col lection.And compared with other prediction algorithms,it does not need to occupy a large amount of storage space of MCU.At the same time,the concept of energy threshold is introduced.In the selection of cluster head,the node which energy does not reach the high energy threshold can not become a cluster head,when the node energy is lower than energy threshold,it will be in a sleep state.Dormant nodes will continue to replenish energy,and not participate in the routing activity until the energy reaches the threshold.According to the design requirements of low power consumption of green nodes,in the hardware,it designs a temperature and humidity sensor node with solar energy collection,in the software it provides a new routing protocol,and compared with the MRRCE and EHA-LEACH protocols.By building the NS2 simulation platform,the sensor nodes upload data to the base station.After analyzing the energy data,compared with other two kinds of routing protocol,the results show that energy saving strategy proposed in this paper has obvious advantages in prolonging the network lifetime.For field applications,this reflects the great value of application.