Automated Building Monitoring System Based on Reflectorless Measurements: A Case Study of the IMSGeo System

Area of Science:

• Geodesy
• Civil Engineering
• Structural Health Monitoring

Background:

• Real-time monitoring of object conditions is crucial for safety and maintenance.
• Existing geodetic monitoring systems often face challenges in reliability, cost-effectiveness, and result interpretation.

Purpose of the Study:

• To introduce and evaluate the Intelligent Monitoring System for Threatened Objects (IMSGeo).
• To assess the system's efficiency based on reliability, affordability, and clarity of results.
• To validate the system's performance across diverse surface types.

Main Methods:

• Utilizing reflectorless measurement techniques for surface data acquisition.
• Analyzing normal vectors to determine surface geometry changes.
• Conducting experiments on concrete, expanded polystyrene, tiles, brick, and metal surfaces.
• Assessing measurement repeatability and the accuracy of a proprietary geometry change determination algorithm.

Main Results:

• Measurement repeatability differences generally remained within 5 mm.
• Maximum geometry change differences for brick and metal surfaces did not exceed 2 mm.
• High accuracy was observed for other surfaces: 89% within 2 mm for polystyrene, 84% within 2 mm for tiles, and 97% within 5 mm for concrete.

Conclusions:

• The IMSGeo system demonstrates high reliability and accuracy in monitoring surface changes.
• The system's non-invasive approach and efficient algorithm make it a cost-effective solution.
• IMSGeo is suitable for real-time geodetic monitoring of various threatened objects and surfaces.