IoT Based Smart Waste Management Using Top K-Query Scheduling

The improvement in technology has resulted in a drastic increase in waste and unwanted products by the industries and other sectors of production as well as residences. This situation prompts the need of better waste management systems in and around the cities. The system that is proposed consists of a module with an ESP8266 microcontroller, ultrasonic sensor and GPS module that are fixed in the trash cans. The ultrasonic sensor constantly monitors the level of trash in the cans. When the trash in the can reaches a certain level, it is sensed by the ultrasonic sensor and updated in the cloud through Wi-Fi along with the location from the GPS module. The coordinates are accessed from cloud by Raspberry Pi microcontroller through Wi-Fi, Top k-query scheduling is applied to the values to stabilize the data sets based on a threshold value and then stores these values in a table created in MySQL database. Thus scheduling prevents congestion in database by reducing the number of uncertain entries. A webpage is designed to access the locations in the MySQL table using php code which then plots the locations on a map. From the experimental results it can also be observed that the webpage dynamically calculates and displays the shortest route between the points.