Method for monitoring composite material engineering temperature

Abstract

The invention discloses a method for monitoring a composite material engineering temperature. The method comprises the following steps: i, manufacturing a temperature sensor original (2) via the way of embedding four stainless steel network electrodes; ii, mounting an L-shaped deployable concrete structure (3) outside the manufactured temperature sensor original (2); iii, inserting the L-shaped deployable concrete structure (3) of the temperature sensor original (2) into the part of a large volume concrete structure (1) needing measuring the temperature; iv, exciting the sensor original (2) by a constant voltage source (5); v, using a high temperature resistent wire (4) of the temperature sensor original (2) to transmit the voltage and electric current to a signal amplifier (6); vi, using a data acquisition card (7) of a computer (8) to amplify voltage and electric current signals; and vii, obtaining the temperature value of the part to be measured by a mathematical operation and calibration temperature-resistance conversion formula. With the adoption of the method for monitoring the composite material engineering temperature, the temperature detection sensitivity of carbon fiber cement based composite material temperature sensor can be improved.

Description

technical field [0001] The invention belongs to the technical fields of civil engineering, water conservancy and hydropower engineering and traffic engineering, and relates to a temperature monitoring method in the field of long-term monitoring of engineering sites, in particular to a method for real-time monitoring of engineering temperature of carbon fiber / nano carbon black cement-based composite materials. Background technique [0002] In the engineering site detection, the monitoring of the mass concrete structure foundation temperature during the construction period plays an important role in reasonably solving the temperature stress and controlling the development of cracks. The traditional detection methods such as traditional thermometers and thermocouples as sensors have been greatly improved. Restricted the accuracy and precision of the data. Although the advanced fiber grating temperature sensor has the advantages of small size, high sensitivity, corrosion resista...

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Problems solved by technology

However, since the resistance change caused by temperature is still relatively small compared with the substrate resistance, the accuracy of the above method is not high

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