IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) e-ISSN: 2278-2834,p- ISSN: 2278-8735.Volume 9, Issue 3, Ver. V (May - Jun. 2014), PP 63-67 www.iosrjournals.org www.iosrjournals.org 63 | Page Real Time Water Quality Measurement System based on GSM Akanksha Purohit 1 , Ulhaskumar Gokhale 2 1 Department of Electronics & telecommunication Engineering G. H. Raisoni Institute of Engineering and Technology for Women, Nagpur India 2 Department of Electronics & telecommunication Engineering G. H. Raisoni Institute of Engineering and Technology for Women, Nagpur India Abstract: The conventional technique of measuring the quality of water is to gather the samples manually and send it laboratory for analysis, but this technique is time overwhelming and not economical. Since it’s not feasible to take the water sample to the laboratory after every hour for measuring it’s quality. The water quality measuring system can measure the essential qualities of water in real time. The system consists of multiple sensors to measure the standard of water, microcontroller and GSM to send the information to the watching centre. It's a true time system which is able to endlessly measure the standard of water and can send the measured values to the watching centre when each predefined time. The system relies on microcontroller 8051 and GSM. Keywords: GSM Module, Microcontroller, Multiple sensors, SMS, Water Quality Measuring. I. Introduction Water quality may be an advanced term to explore. The standard of water depends on such a lot of things. We've used many thought parameters in conjunction with one another to work out the water’s quality. These include: pH, turbidity, conductivity, total dissolved solid and temperature. Since the standard technique of water quality measuring isn't economical thus there was a necessity to develop a system which is able to measure the standard of water in real time and also the system must be economical, correct and low price. The water quality measuring system makes use of multiple sensors, information acquisition module and data transmission module. Information acquisition module includes microcontroller 8051. Data transmission module includes GSM module. There are numerous sensors that measures temperature, turbidity, pH, conductivity and total dissolved solid present in the water. This technique conjointly uses ADC. The measured values are then transmitted to the watching centre via GSM; it's conjointly shown on LCD by the microcontroller. The system has the advantage of potency, accuracy and low price. II. System Hardware Design 2.1. Overall style of the system As shown within the diagram the system consists of assorted water quality measuring sensors like pH, turbidity, conductivity and temperature, ADC, microcontroller 8051, GSM module and LCD. The water quality measuring system uses pH, turbidity, conductivity and temperature device to measure the standard of water. This device then measures the corresponding values of the water. Since the outputs of the sensors measured are analog in nature and microcontroller will handle solely digital signals thus there's a necessity of a tool that converts analog signals into digital signals. The system makes use of ADC for this purpose. The outputs of sensors are directly given to ADC, which converts the analog signals into the corresponding digital signals. These digital signals are then given to the microcontroller 8051. System uses GSM module for communication. GSM module makes use of interface of the microcontroller 8051 for communication. Microcontroller sends the measured values to the watching centre by SMS via the GSM module. Since it's a true time system thus microcontroller can send the measured values to the watching centre after the particular time as per the program. With the information to the watching centre the microcontroller conjointly displays the values of the measured quantities on the LCD. It's a true time system thus it doesn't need any man machine interaction for activity the standard of water.