A pinboard by
Shahzad Gul

Assistant Professor, DHA Suffa University


ZigBee has been widely adopted as wireless sensor network (WSN) in various industrial applications. Although it provides low-power and low-cost mesh networking, a steady and predictable network performance is not guaranteed since channel becomes the time-variant and highly attenuated from man-made obstacles and also interferences in 2.4GHz industrial, scientific, and medical (ISM) band. These degraded channel characteristics increase the number of hop and thus result in the increased packet error rate and transmission delay. In this paper, ZigBee based WSN is deployed inside an already existing duct system for intelligent waste collection in industrial environment and the Received Signal Strength Indicator (RSSI) and path losses were measured. The experimental results show that duct communication channel, acting as a waveguide, provides a more reliable and better network performance over free space channel.