Minimum Interference Model in Wireless Sensor Network for Foul Environment in Workshop and Warehouse

Due to the low-rate radios used and the effects of wireless interferences in workshop and warehouse´s foul environment, traditional workshop and warehouse informatization system has many defaults, such as, manual business process management, information flowing delay after material flowing, high mistakes ratio, stacking and crane job schedule in a state of chaos, very much production waste, and hard to manage the storage. In this paper, First, we propose a technique to evaluate the quality of wireless signal in workshop and warehouse. Second, we propose a minimum interference model in wireless sensor network by discovering zone-disjoint paths for wireless signal, assigning a particular channel based on a channel assignment algorithm. With our prototype provide high-quality wireless signal in workshop and warehouse, workers can use wireless PDA follow the intelligently instruction to do multi-process material-flow-job scheduling, calculation and allocation of storage space, storage monitor, and production execution monitor.