Carbon nanometer tube cement based composite material sensor encapsulating method

Abstract

The invention discloses a carbon nanometer tube cement based composite material sensor encapsulating method. A protecting cover is covered on a carbon nanometer tube cement based composite material sensor metal binding post. A thin layer of coating or adhesive substances is evenly painted on each surface of a sensor prismoid, wherein the coating or the adhesive substances are corrosion-resistant, heat-insulating, humid-preventing, insulating, and capable of being hardened. Before the coating or the adhesive substances are completely hardened, roughening is conducted on the surfaces so as to enable the surfaces to be rough enough. The protecting cover is removed from the carbon nanometer tube cement based composite material sensor metal binding post, and a sensor is encapsulated after the coating is completely hardened. After encapsulated through the method, the carbon nanometer tube cement based composite material sensor has the advantages of being corrosion-resistant, heat-insulating, humid-preventing, insulating, and the like, is not influenced by outside environments in project structure health monitoring, is reliable in detected data, and reduces detection errors. Moreover, the sensor can be firmly adhered to concrete environment media.

Description

technical field [0001] The invention relates to a method for encapsulating and manufacturing a sensor for engineering structure monitoring. Background technique [0002] Carbon nanotube cement-based composite sensor can be used for real-time health monitoring of engineering structures, ensuring the matching between the sensor and the concrete environment medium, reducing measurement errors, and playing an important role in major engineering disaster prevention and mitigation as well as engineering safety and reliability. In the real-time health monitoring system of engineering structure, the sensor subsystem is the front-end and most basic subsystem of the health monitoring system, which is composed of multiple sensors and sensor networks. Sensors can be used to perceive the load and response information of structures, and output them in the form of physical quantities such as electricity, light, and sound. The currently developed sensing materials and sensing elements main...

AI Technical Summary

Problems solved by technology

For example, fiber optic sensors require a large amount of auxiliary equipment, which is difficult to control and expensive; piezoelectric materials (such as piezoelectric ceramics, etc.) are mostly used in simple components in applications, and do not match the material of concrete materials, and lack engineering inspections; shape Memory alloys are either expensive or unstable, and in the inelastic stage, the relationship between resistance and strain is nonlinear, which brings difficulties to signal analysis, etc.

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