Design of a MEMS sensor array for dam subsidence monitoring based on dual-sensor cooperative measurements

• Tao Tao,
• Jianfeng Yang,
• Wei Wei,
• Marcin Woźniak,
• Rafał Scherer,
• Robertas Damaševičius,

Vol. 15, No. 10, October 31, 2021
10.3837/tiis.2021.10.005, Download Paper (Free):

• Dam monitoring system
• MEMS sensor arrays
• Cooperative measurement with dual-sensors
• Subsidence monitoring
• Platform to realize

Abstract

With the rapid development of the Chinese water project, the safety monitoring of dams is urgently needed. Many drawbacks exist in dams, such as high monitoring costs, a limited equipment service life, long-term monitoring difficulties. MEMS sensors have the advantages of low cost, high precision, easy installation, and simplicity, so they have broad application prospects in engineering measurements. This paper designs intelligent monitoring based on the collaborative measurement of dual MEMS sensors. The system first determines the endpoint coordinates of the sensor array by the coordinate transformation relationship in the monitoring system and then obtains the dam settlement according to the endpoint coordinates. Next, this paper proposes a dual-MEMS sensor collaborative measurement algorithm that builds a mathematical model of the dual-sensor measurement. The monitoring system realizes mutual compensation between sensor measurement data by calculating the motion constraint matrix between the two sensors. Compared with the single-sensor measurement, the dual-sensor measurement algorithm is more accurate and can improve the reliability of long-term monitoring data. Finally, the experimental results show that the dam subsidence monitoring system proposed in this paper fully meets the engineering monitoring accuracy needs, and the dual-sensor collaborative measurement system is more stable than the single-sensor monitoring system.

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