Fault-Tolerant Transmission Protocol for Distant Agricultural Image Acquisition

To solve the problem of the high cost in the GPRS communication and the limit transmission distance of WiFi, a transmission scheme for distant agriculture image acquisition was designed based on digital transmission radio in this paper. However, the majority of current digital transmission radio was designed for a small amount of data transmission. It could get a greater transmission distance with the help of the digital transmission radio, but the signal interference increased heavily when the digital transmission radio was used for image transmission. A fault-tolerant transmission protocol for agriculture image (FTTP-AI) based on digital transmission radio was designed in this paper. Packet verification was used to reduce the data errors caused by the signal interference of the digital transmission radio. At the same time, overtime retransmission and the lost packet retransmission were used to overcome the problem of packet loss. Experiments showed that the FTTP-AI could send the agriculture image to a remote computer center successfully in the field. With the help of the FTTP-AI, the rate of accuracy of data transmission was up to 99.2%, the success rate of image transmission was up to 95.8%, the costless distant transmission can achieve several kilometers. This scheme could satisfy the requirement of the low-cost for distant agriculture images transmission reliably.