农产品仓储查询系统的无线网络设计

为了提高农产品仓储管理效率，降低仓储管理中因查找或盘点而产生的物品损坏与人力耗费，文章以NRF2401无线通信模块为核心，设计了用于农产品仓储查询系统的无线网络硬件。包括用于查询定位响应的标签节点和用于下达查询命令的协调器。通信性能测试表明，无线查询网络以0 dBm发射功率通信，射频功率放大20 dBm，系统通信距离150 m之内，丢包率小于35%，节点低功耗模式的工作电流为011335 mA，活动模式工作电流为470428 mA，通信功耗低。表明该查询网络能够应用于冷链仓储管理的全过程，工作可靠性高。

Design of an inquiry system for agricultural products storage based on wireless network

To improve the efficiency of products warehouse management and reduce goods loss and labor， we designed a wireless communication network for finding goods in the warehouse based on wireless communication module—NRF2401. This network included a label node for fixing a position on responding， and a coordinator for sending command to label node. The communication performance test showed that the node with a 0 dBm RF power and appending a PA with 20 dBm exhibited a lower packet loss rate less than 35% within a 150 m communication distance. And the electric currents were 011335 mA in a low\|power mode， and 470428 mA in an active mode， which means the lower energy consumption of communication， and also have a high reliability. Therefore， this browse network could be equipped in the whole process of warehouse management.