Water quality and quantity measuring system with prepaid billing

Project Title

Water quality and quantity measuring system with prepaid billing

Project Area of Specialization Electrical/Electronic EngineeringProject Summary

Due to the increase in water pollution and climate variations, the water should be used smartly. In addition to this, the quality of water must be checked before drinking. In this project, an online android app-based system has been designed to check water quality (pH and turbidity). Beside it, a prepaid water billing system has been introduced for smart water use. The control methodology designed in a way that the controller regularly detects the water level and quality (pH and turbidity) in the tank, and notify the user about the states on the mobile app. 

Project Objectives

The scope basically involves the implementation of our knowledge encompassing microcontrollers based electronic and sensor circuits to design and develop a “Water Quality and Quantity Measuring System with Prepaid Billing” capable of operating effectively.

The main objectives of this project are the following:

1. To make sure that water is distributed and charged according to its consumption.
2. The distribution is charged in real-time with the prepaid billing system.
3. The quality of water is monitored regularly in real-time.
4. The IoT is utilized to monitor water quality and to make water bill payments in real-time.
5. The android based mobile app is also designed to monitor all the activities in real-time.

Project Implementation Method

In this project, the controller acquires all the data from sensors (water level, pH level, and turbidity level). Then all the data is transferred to the user (android app) through the internet. The block diagram of the project is shown in the Figure below.

The user regularly checks the level of the available water in the tank and decides whether he want to purchase the water or not. If the user wants to purchase the water, then he entered the passcode (according to the amount of the water) to buy the water. Then this passcode sends back to the controller, and the controller confirms that the passcode is valid or not. If the passcode matches the code already feed to the controller, then the controller calculated the solenoid valve opening time. After calculation, the valve is opened for a fixed amount of time, as calculated by the controller. The flow sensor calculated the amount of water and close the solenoid valve accordingly. In addition to this, the controller regularly checks the water quality and informs the user through the android app. The main controller design is also illustrated in Figure below.

Benefits of the Project

Following are the advantages and usage of our proposed projects:

1. In the current situation, it can be effectively installed at homes to monitor the consumption of water.
2. It can be utilized for pre-paid water usage billing.
3. This project ensures a clean/healthy water supply at homes that can reduce health issues related to drinking water.
4. It can be employed in hospitals for monitoring of water quality and other parameters.
5. It can be deployed at a commercial level to monitor water wastage, e.g., carwash centers.  

Technical Details of Final Deliverable

In this work, a real-time prepaid water billing system will be introduced for smart water use. The android based app will be developed to purchase the water online and to monitor the water quality and quality in the tank. The controller will be designed in a way that it regularly checks water level and quality, and inform the consumer on the android mobile app. If the user wants to purchase water, he/she can enter a passcode and the controller verifies the passcode and calculates the valve opening time. The controller automatically turned off the solenoid valve after taking feedback from the flow sensor. This smart water quality and quantity measuring system will be implemented for domestic and industrial users for safe and healthy water. 

Final Deliverable of the Project HW/SW integrated systemCore Industry HealthOther Industries Agriculture Core Technology Internet of Things (IoT)Other TechnologiesSustainable Development Goals Good Health and Well-Being for People, Clean Water and SanitationRequired Resources

Item Name	Type	No. of Units	Per Unit Cost (in Rs)	Total (in Rs)
			Total in (Rs)	70950
Arduino controller 2560	Equipment	2	1500	3000
Raspberry pi (EBRP-B-14)	Equipment	1	13500	13500
Wifi Module	Equipment	3	500	1500
Hall-effect water flow sensor	Equipment	3	1500	4500
Solenoid valve for water stoppage	Equipment	2	2000	4000
LCD	Equipment	3	750	2250
Water Level sensor	Equipment	4	450	1800
Ph Sesnor	Equipment	2	5100	10200
Turbidity sensor	Equipment	4	1300	5200
miscellaneous	Miscellaneous	1	10000	10000
Tablet	Equipment	1	15000	15000