Intelligent temperature measuring cable

Abstract

The invention relates to a cable temperature measuring technology, and in particular relates to an intelligent temperature measuring cable. The intelligent temperature measuring cable comprises a three-core power cable and further comprises a temperature measuring optical fibre and a temperature measuring device connected with the temperature measuring optical fibre; the temperature measuring optical fibre is arranged in the centre of the three-core power cable; the temperature measuring device comprises an optical module and an electrical module; the optical module is connected with the temperature measuring optical fibre, and used for transmitting an optical signal and receiving a set scattered optical signal; the electrical module is connected with the optical module, and used for converting the scattered optical signal into an electrical signal to store; and the temperature measuring device is installed at the initial section of the three-core power cable. Due to the temperature measuring cable, temperature measuring and storing of various points of the three-core power cable can be realized; the built-in optical fibre is adopted, so that external interference is excluded; the optical fibre is installed in the centre of the three-core power cable; therefore, the temperature measuring uniformity degree and accuracy are improved; simultaneously, the service life of the temperature measuring optical fibre is prolonged; and implementation basis is provided for fault detection of the power cable and carrying capacity control.

Description

technical field [0001] The invention belongs to the technical field of cable temperature measurement, in particular to an intelligent temperature measurement cable. Background technique [0002] The more widely used technologies in cable temperature measurement applications include thermocouple temperature measurement and optical fiber temperature measurement. The principle of thermocouple temperature measurement is that the resistance of the thermocouple will change as the temperature changes, so as to convert the temperature signal into an electrical signal and measure it. Thermocouple temperature measurement has simple structure, low cost, and mature technology. However, because thermocouple can only measure temperature at a point, it cannot monitor the temperature of the entire cable line online, so it has certain limitations. Optical fiber has the advantages of low cost, no electromagnetic interference, small size, light weight, high measurement accuracy, and easy layi...

AI Technical Summary

Problems solved by technology

[0003] (1) The temperature rise of the power cable is mainly affected by the current carrying capacity. The increase of the current carrying capacity will cause the temperature in many places of the cable to rise, and only the temperature measurement of the cable joint part has potential safety hazards;

[0004] (2) The power cable laying environment is complex, and the laying of the op

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