Landslide monitoring sensor for simultaneously measuring internal and external displacement fields and application thereof

Abstract

The invention discloses a landslide monitoring sensor for simultaneously measuring internal and external displacement fields and application thereof. A wireless three-dimensional position measuring device for measuring surface displacement and an optical fiber grating sensing device for converting optical signals to displacement parameters are designed. The application comprises the following steps of: 1, the combination form and the structure of each component of the sensor, 2, the basic technical principle of measuring the internal displacement field by the sensor, 3, the basic technical principle of measuring the external displacement field by the sensor and 4, the sensor packaging method in engineering application. Thus, the internal displacement of the landslide body is calculated through acquiring changes of optical characteristics of a fiber Bragg grating sensor, the surface displacement of the landslide body is calculated through a three-dimensional position time sequence obtained and measured by an ultra wideband wireless positioning sensor, and through analyzing the surface displacement and the internal displacement, problems of landslide monitoring and early warning during processes of a natural landslide, a high slope, a deep foundation pit and the like are solved.

Description

technical field [0001] The invention belongs to the technical field of sensors, and relates to a landslide monitoring sensor for simultaneously measuring internal and external displacement fields and an application thereof. Background technique [0002] At present, the main content used for geotechnical engineering landslide monitoring includes surface displacement monitoring and internal displacement monitoring. Usually, different systems and sensors are used for the monitoring of the two. Among them, total station, GPS and other technologies are mostly used for surface displacement, and inclinometers are mostly used for internal displacement observation. At present, there are two obvious defects: 1) continuous and uninterrupted high-precision measurement of internal and external displacement cannot be realized; 2) juxtaposition and co-location measurement of internal and external systems and sensors cannot be realized. The above two defects have caused problems such as po...

AI Technical Summary

Problems solved by technology

At present, there are two obvious defects: 1) continuous and uninterrupted high-precision measurement of internal and external displacement cannot be realized; 2) juxtaposition and co-location measurement of internal and external systems and sensors cannot be realized

The above two defects have caused problems such as poor real-time performance of displacement measurement data and data incompatibility.

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