1575.42 MHz Frequency Utilization on Intelligent Transportation System in Car Monitoring Distribution Delivery Logistic Using ublox GPS Neo 6M

Intelligent Transportation System or a smart transportation system with new technology that has been growing in recent years which is used as a computing system and communication technology for various purposes, such as traffic management, vehicle and highway security and emergency services. The current growth of e-commerce is very powerful, because people have placed e-commerce as a lifestyle. The high demand for logistics and delivery causes the need for monitoring package cars. This research system is designed to automatically monitor package cars, by utilizing the receiver frequency in the L1 frequency band (1575.42 MHz) which is modulated by the Ublox GPS Neo 6M module. Accelerometer sensors and acoustic data are used in cars as speed gauges and are used to detect and provide brief recordings in the event of an accident and can also monitor the speed of the car's distribution of packages in real-time. It was obtained for 7 trials with the same speed and constantly to avoid the Doppler effect that the accuracy of the GPS was quite good and the data was successfully uploaded to the web server in real time

Automatic Sluice Monitoring Based On The Water Ph In a Brackish Water Pool Using a Web Server

Fisheries are one of the most potential sources of foreign exchange for the country. Water quality in fish farming in freshwater ponds is a very important part because the growth and age of fish is strongly influenced by temperature and changes in dissolved oxygen levels, water pH and salt salinity. Fish farmed in freshwater ponds are thought to be more sensitive to sudden changes in water quality. In order to continue to produce good quality fish, a tool is needed to control the pH of the water in brackish water ponds where fish farming is carried out. A prototype of a brackish water pond with automatic sluice is designed that can maintain pH stability in a pond filled with brackish water. The floodgates are driven using a servo motor with an Esp 32 microcontroller. The system is able to accurately measure the pH of the water and the results of the measurements are sent to the database via Esp 32 and displayed via a web server. When the pH value in a brackish water pool is less than 7, the floodgates containing salt water will open automatically to stabilize the pH in the brackish water pool. However, if the pH value in the brackish water pool is 8, the door containing fresh water will open automatically.Keywords: Water, Esp 32, fish, pond, brackis