Hi guys! My name is Iris, a Junior High School Student from the Philippines. It's been 3 months already since I began working on my Research Project: Measuring Salinity and Dissolved Oxygen through a low cost Wireless Sensor Network. As stated above, the main idea of our study is to create an inexpensive WSN.
To do this, we have studied several studies relevant to our research. And as my knowledge about the subject expands , I formulated an idea to make my study feasible. First, since buying Salinity And Dissolved Oxygen Sensor cost an abundant amount of money, I suggested to make our own sensor. But before that, I first searched the factors of the two variables. And later on I found out that they had a relationship with pressure and temperature. Knowing this, it lessens the burden of making sensors, since we can now use their relationship to find the Dissolved Oxygen. And to make that possible, we are going to use the DOTABLES SOFTWARE. ( A SOFTWARE THAT CALCULATES THE SOLUBILITY OF OXYGEN IN WATER IF TEMPERATURE, PRESSURE AND SALINITY IS GIVEN). With this available software online, I no longer need to create a Dissolved Oxygen Sensor. And it's a good thing, and a bad thing at the same time, since I'm now going to use temperature and barometric sensor in replacement. But compared to Dissolved Oxygen and Salinity Sensor, Temperature and Barometric Sensor are less expensive and are much more affordable.
I already have the codes for the Temperature and Pressure Sensor. But the problem arises as it comes to Salinity Sensor. As I have said earlier, to make a low cost WSN, I will need to make them. (EXCEPT FOR THE TEMPERATURE AND PRESSURE SENSOR SINCE THEY ARE AFORDABLE TO BUY) The salinity sensor that I'm going to make is based on the study of Samuel H. Russ and Bret Webb to use resistance and temperature to obtain Salinity. But the codes they used are not included in their study. Is there anyone out there who can tell me the what to do?