الفهرس | Only 14 pages are availabe for public view |
Abstract Egyptian agricultural water is overwhelmed with several constraints and challenges due to climate changes; and political issues, as well as lack information regarding the optimal uses and appropriate techniques. On the other hands, Egypt developed a national strategy for sustainable agricultural development up to 2030 (SADS-2030). Center pivot irrigation systems have the majority in the all promised agricultural projects in Egypt. On the other hands, it is so difficult to maintain, especially if the farm has more than two units. It gets chaotic and expensive. However, numerous center pivot devices with two operators monitor and operate them. Since they have to examine every part (gearbox, gearmotor, tires, and more) of each device, they can only find errors after they happen. Fixed damage after a gadget malfunction or accident will take time and money, which could lead to excess or unanticipated costs. The main goal of this study was to design; build up and monitor the hard part of this process and make it a lot easier with early error detection that illustrates normal vital readings of a device and warns the operator to start any needed process that can prevent a malfunction or crash of the center pivot. from the abovementioned, the aims of this study were to: Design, build, verify, and validate a smart real-time system for monitoring the factors that affect the operation of the mechanical parts of a center pivot irrigation system; Investigate the developed real-time smart system under field conditions; and build, verify, and validate an IoT program for monitoring the efficiency of the mechanical parts of a center pivot irrigation system. Problem detection and monitoring systems used the most common NTC thermistors. Metal oxide or ceramic is heated and compressed to make NTC thermistors. charge carriers allow conductor current. High temperatures release semiconductor charge carriers. NTC ferric oxide thermistors employ electrons. Nickel oxide NTC thermistors carry charge via electron holes. Oil level sensor prisms reflect light to the phototransistor, generating a strong signal. The receiver transistor switches on when the sensor is not submerged in oil, providing a ”logic level” output that approximates sensor power voltage. Oil-soaked sensors turn off transistors, generating 0 volts. An industrial optical sensor with prism-covered IR transceiver was employed. Prisms in liquid refract light to the liquid, giving the receiver minimum light and logic 0. Without liquid, light internally reflects, giving the receiver light and logic. 1. The TPMS continuously monitors vehicle tire pressure and alarms when it exceeds or goes below the standard range. All sensors were on Tower/Central Node Board. Center Pivot control panels on tower/central node boards include two ESP32 microcontrollers. All towers convey essential data to the device’s main board, which connects to the cloud server online. Remote controls exist. Each node board was tested for sensitivity in the lab and field. Egypt’s Ismailia Governorate hosted field experiments. The valley center pivot irrigation system was studied. Five spans (two center pivot tower field experiments); 48-meter spans; 240-meter pivots; Pivot: Used; Galvanized pipe. The studied central pivot was 30°26’51.94”N, 31°50’16.71”E. Operators monitored gear motor and gear box oil temperatures and levels at towers (1 and 2) to assess performance efficiency. To assess inflation efficiency, each tower’s tire pressure was recorded. |