Field observation data transmission method and device

Abstract

The invention discloses a field observation data transmission method and device. The device comprises data transmission devices of a sending terminal and a receiving terminal, and the data transmission devices of the sending terminal and the receiving terminal separately comprise two parts, namely a protocol board and a data radio station board card. The transmission method comprises the followingsteps: improving a response mechanism, a timeout mechanism and a window mechanism of a selection-retransmission ARQ; extracting observation data, and sending the observation data to a data receivinghost; and finally integrating a power management function and a working time management function on the protocol board. The field observation data transmission method and device disclosed by the invention have the advantages that after the realization processes of various reliability protocols are analyzed, the low-power-consumption design is incorporated into the protocol improvement, and under the assistance of the power management on the respect of the hardware system, the transmission power consumption can be effectively reduced during field data transmission, the volume is small and the cost is low.

Description

technical field [0001] The invention relates to the technical field of data transmission, in particular to a method and device for field observation data transmission. Background technique [0002] Digital radio station refers to a radio station that realizes high-performance data transmission by means of digital signal processing, error correction coding, software radio, digital modem and surface veneer integrated design. It is a low-cost, long-distance, installation and maintenance The convenient data transmission solution is widely used in petroleum, coal, environment and other industries that have field data transmission requirements. The transmission process can use a field observation equipment, digital radio board, and data receiving host computer. Simplify the model to describe, such as figure 1 shown. [0003] Since the communication process of the digital radio station is realized by data transmission through radio, the field transmission process is susceptible t...

AI Technical Summary

Problems solved by technology

If the rainstorm lasts for 2 hours, the sender will retransmit the frames with serial numbers 2 to 9 24 times, and transmit a total of 192 frames, which will cause a large number of unnecessary frame retransmissions and increase the unnecessary power consumption of the data transmission station.

[0017] To sum up, in terms of field observation data transmission, the existing technology is based on the integrated stop-wait ARQ protocol of digital transmission stations, but it has the problems of small data throughput and low channel utilization; the easy-to-think improvement measures are based on data transmission Radio integration selection-retransmission ARQ protocol, although it improves the transmission efficiency, the data throughput will drop sharply in the field under continuous extreme weather conditions, and a large number of unnecessary frame retransmissions will reduce the data transmission efficiency.

It can be seen that although the two protocols can guarantee reliable data transmission, they are difficult to be directly applied in the complex and changeable natural conditions in the wild.

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