WEB BASED DATA LOGGING SYSTEM DESIGN FOR CONTROLLED ENVIRONMENTS


Aksu S., Mucan U.

III. BALKAN AGRICULTURAL CONGRESS, 29 August - 01 September 2021, pp.66

  • Publication Type: Conference Paper / Summary Text
  • Page Numbers: pp.66
  • Çanakkale Onsekiz Mart University Affiliated: Yes

Abstract

Although the agricultural production areas do not have the opportunity to expand, the continuous increase in the human population makes it necessary to improve the means of production. In this context, it is inevitable for agricultural studies to turn to intensive production. Although most of the studies in question are conducted in field conditions, the ones conducted in controlled environments are also undeniable. In fact, some of these studies have to be carried out only in the laboratory environment. In laboratories where agricultural research is carried out, high-cost equipment is used to control indoor conditions. Continuous operation of these equipment is essential for researchers to obtain reliable results. The first thing that comes to mind is that even if the air conditioning units fail, long-term work will be enough to produce completely erroneous results. This will result in both economic and labor loss. From this point of view, the necessity of a system that allows remote monitoring of indoor conditions during ongoing research in controlled environments has been seen. It was requested that the system also records these data so that the changes that may cause errors while analyzing the research data can be determined. Commercial products that perform the required operations are available in the market. However, the continuity of these products is limited by the life of the infrastructure of the manufacturers and they are not preferred due to their high costs. Accordingly, it was wanted to produce a cost-effective alternative. In parallel with the developing technology, the production of electronic devices and components is increasing and diversifying. One of these devices is microprocessor development boards that can communicate with unlimited sensors and mechanical devices. The most widely used of these boards is Arduino (Arduino LLC., Italy) development platforms due to its open source structure. Within the scope of the study, it has been seen that the DHT11 temperature humidity sensor data can be transmitted to the web-based database via the Arduino Ethernet shield. In this context, a PHP based MySQL database was created and single-row data sent from the Ethernet shield were transferred to the relevant columns. After the necessary connections of the sensor, shield and microprocessor units were provided, the original software was created. After confirming that data transfer can be done without any problems, the system was fixed in the Crop Stress Monitoring and Thermography Laboratory in Çanakkale Onsekiz Mart University Faculty of Agriculture. The system currently records indoor temperature-humidity data to the database every 10 minutes. The fact that the system cost around $50 with all its components show that the study achieved its goal. In future studies, it is possible to integrate additional sensors into the system, within the capacity of the microprocessor unit.