As we know, the energy needed for sensors should be electrical. So the rst step before start to work is to convert environmental energy to electrical one. Inside the node there are dierent components for sensing the area, collecting data and

在ERP/K3系统中，用PDA扫描条码实现自动出入库，缩减入仓管员的工作量-In the ERP/K3 system, loading and unloading, PDA scanning device is used to implement automatic cut warehousing controller workload