A Simulation of Wireless Sensor Network Using ZigBee

Sensor networks have been a wide research area, during the last years. Wireless sensor networks are distributed network structures in which many sensors connect wirelessly to communicate with one another. In this paper the IEEE 802.15.4/ZigBee is used due to its low-power, rate and cost which allows the communication of two way wireless sensor network. In this paper IEEE 802.15.4 performance is analyzed based on OPNET simulator which allows the abilities of generating correct results and analysis to identify the actual behaviour of the real system. With this simulator program, the effect of performance parameters like throughput, data traffic received and data traffic sent for three system topology scenarios are presented. Keywords: WSN, IEEE 802.15.4, performance

An internet of things based smart waste system

The importance of preserving the environment from waste and its pollution lies in many matters such as preserving people health, enhancing the aesthetic character of cites, attracting tourists, and protecting society from environmental disasters. The environmental wastes are the main dilemmas in our daily life and in the world at large. With the existence of modern technology, development and the field of the internet, many solutions have been undertaken to get rid these dilemmas. In this paper, a smart waste system based on internet of things (IoT) technique has been proposed using ESP-32 Wi-Fi microcontroller. This system can be adopted to avoid the accumulation of waste in the streets that distort the face of civilization, also to reduce the burden of workers and limit the workforce. The system is based on a multiple sensors in the garbage baskets, as they measure the waste level by using ultrasonic sensor, the moisture percent and temperature degree using DHT-22 sensor. The sensors data are processed by ESP32 microcontroller and displayed to both LCD screen using I2C protocol and mobile application using IoT cloud. System baskets automatically open their covers when the person approaches with a distance less or equal to 30 cm to throw garbage. Any approval waste basket is automatically discharged through an underground dump system using conveyor belt if the basket is full by 80% garbage and/or the basket moisture reaches to 40%