High-precision optical fiber composite cable intelligent monitoring platform

Abstract

The invention belongs to the fields of mine fire prevention and explosion prevention and fire pre-warning safety monitoring, and relates to a high-precision optical fiber composite cable intelligent monitoring platform which is the key for protecting safety operation of optical fiber composite cables. The platform comprises a distributed optical fiber temperature measuring system, a cable heating temperature control system, an optical fiber measured temperature calibration system, a local discharge online monitoring system, a data exchange system and an upper computer. The intelligent monitoring platform integrates the distributed optical fiber temperature measuring system, the cable heating temperature control system, the optical fiber measured temperature calibration system, the local discharge online monitoring system and the data exchange system, overcomes defects in the prior art, gives full play of the advantages that the safety and reliability are good, temperature measuring and positioning precision is high, the anti-electromagnetic-interference capacity is high and the operation temperature and local discharge of the optical fiber composite cables are continuously monitored in real time on a large scale, gives full play of the transmission capacity of the optical fiber composite cables, reduces the operation cost, and achieves the diversified goals of engineering security application and experiment simulation and precise prediction.

Description

technical field [0001] The invention belongs to the field of coal mine fire prevention and explosion prevention and fire early warning safety monitoring, is the key to protecting the safe operation of optical fiber composite cables, and relates to a high-precision optical fiber composite cable intelligent monitoring platform. Background technique [0002] Underground fire accidents are an important factor affecting the safety of coal mine production. The mine is a special working environment. With the continuous development of large mines, the scale of the underground power supply network is getting larger and larger, resulting in a continuous increase in the failure rate of mine cables. Once a fire accident occurs, it will inevitably cause a wide range of catastrophic safety accidents. It directly affects the safe production of coal mines. Most of the fire accidents are caused by the high temperature of the cable. If the temperature change of the composite cable can be mon...

AI Technical Summary

Problems solved by technology

At present, the intelligent monitoring platform of coal mining enterprises mainly uses smoke sensor, infrared temperature measurement, optical fiber sensor and other technologies to monitor the temperature of optical fiber composite cables, but there are certain deficiencies: one is that continuous temperature measurement cannot be achieved by using smoke sensor point detection, There are loopholes for the possible high temperature hidden dangers, which cause unnecessary losses; the second is that there is a large hysteresis in the use of thermocouples or infrared monitoring, which cannot realize real-time detection and is easily affected by electromagnetic interference. Every thermistor needs Independent wiring, complex wiring, and the thermistor is vulnerable and requires a lot of maintenance. In addition, the infrared sensor does not have a self-test function and needs to be checked frequently. The third is that the fiber optic sensor needs to be improved for cable temperature and positioning accuracy. Did not form a complete set of intelligent monitoring platform

[0003] A complete set of intelligent monitoring platform has not been formed for the existing optical fiber composite cable temperature measurement method, and it is difficult to achieve the close combination of engineering application, experimental calibration and analysis

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