Home - Environmental monitoring - Applications - Application Case：Remote multi-component greenhouse gas monitoring system based on Beidou short-message communication This experiment used the HT8850 portable high-precision GHG analyzer（Click to learn about product details）. The relevant paper was published in 2023 IEEE International Conference on Smart Internet of Things.
Introduction
Wireless transmission resources in remote areas are limited, whereas satellite communication is not subject to such constraints. However, existing civilian satellite communication bandwidth has limitations. This research project compresses measured data, maximizing the use of the limited character count in Beidou short messages, and explores encryption algorithms to the security of carbon monitoring data.
Experiments: communication successful rate
Definition: data delay within 1 min is defined as successful
Test site: Ningbo China (29°47'53''N, 121°33'46''E)
Experiment 1：Semi-exposed platform
Success rate: 82.5%
Experiment 2：Open space
success rate: 92%
Conclusions
1. System power
HT8850: 100W
Communication: peak 17.5W for <0.3 secons duration per transmission, barely influencing the battery life
2. Two transmission modes were ultimately implemented
The first is a single-user mode, where each user has their own Beidou receiving module, and the processed data is obtained with high flexibility through a Raspberry Pi.
The second mode supports uploading Beidou data to the cloud, where multiple authorized users can access real-time data via a user-friendly web interface.
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