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Method for monitoring composite material engineering temperature

A composite material and engineering technology, applied in thermometers, thermometers with directly heat-sensitive electric/magnetic elements, measuring devices, etc., can solve the problems of low precision and achieve the effects of preparing temperature measurement, improving sensitivity, and easy molding

Active Publication Date: 2015-02-11
HOHAI UNIV
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  • Abstract
  • Description
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  • Application Information

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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

Method used

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  • Method for monitoring composite material engineering temperature
  • Method for monitoring composite material engineering temperature
  • Method for monitoring composite material engineering temperature

Examples

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Embodiment Construction

[0017] As shown in the figure, a composite material engineering temperature monitoring system includes a temperature sensor element 2, an L-shaped openable concrete structure 3 is arranged on the outside of the temperature sensor element, and the temperature sensor element is connected to a signal amplifier 6 through a wire 4, The signal amplifier 6 is connected to the data acquisition card 7 , the data acquisition card 7 is connected to the computer 8 , and the sensor element 2 is also connected to the constant voltage source 5 . When in use, the engineering temperature monitoring system is embedded in the large-volume concrete structure 1 where the temperature needs to be measured, and its voltage and current are connected to the signal amplifier 6 by using high-temperature resistant wires. The computer amplifies the voltage and current signals through the data acquisition card 7, and calculates And the calibration temperature-resistance conversion formula is used to obtain t...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K7/16
Inventor 刘小艳刘爱华刘磊刘开琼陈雷王新瑞
Owner HOHAI UNIV
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