Received: 17-01-2022 / Accepted: 05-07-2022
This paper introduces a sensor network system based on wide area network technology to transmit signals over long distances, saving energy for concentrated agriculture. The system included 3 sensor nodes, 1 data collection station (gateway), and 1 online monitoring system. The system performed serial data transmission for the purpose of transmitting data over longer distances. Besides, the nodes transmitted data to the gateway to send data to the server, which helped users to monitor the system online. The maximum data transmission distance of the system was less than 900m at the test site with no obstructions. In places with many obstacles, the signals transmitted stably below 400m. This sensor network had a “sleep” state when not transmitting data, which saves system energy. The system parameters sent to the server for online monitoring on the Blynk application. These initial results suggest a solution for systems that need long distance transmission in agriculture.