Optical fiber communication has been favored by people because of its advantages of large capacity, high quality of transmitted information, long transmission distance, stable performance, anti-electromagnetic interference and strong anti-corrosion ability. Especially in the past ten years, with the continuous increase of people's demand for broadband services, optical fiber communication has been vigorously developed. But at the same time, the problems of maintenance and management of optical cables are becoming increasingly prominent. With the increase in the number of optical cables and the aging of early laying optical cables, the number of failures of optical cable lines continues to increase. The traditional optical cable line maintenance and management mode has difficulty in finding faults and long troubleshooting time, which affects the normal operation of the communication network. The economic loss caused by the failure of the communication optical cable is huge every year. Therefore, it is very important to implement real-time monitoring and management of optical cable lines, dynamically observe the deterioration of the transmission performance of optical cable lines, and discover and predict hidden dangers of optical cables in a timely manner to reduce the incidence of optical cable blockage and shorten the duration of optical cable faults. The optical cable monitoring system integrates computer technology, communication technology and photoelectric technology, and has multiple functions such as remote real-time, periodic testing, automatic alarm in case of bad conditions and comprehensive data analysis. At the same time, through regular testing, the optical cable automatic monitoring system can timely judge the water ingress and tide of the optical cable joint box, quickly and accurately determine the optical cable obstacles, shorten the obstacle duration, detect the deterioration of the optical cable early, and improve the maintenance quality of the long-distance optical cable. This article introduces the composition principle of the optical cable line automatic monitoring system and analyzes its application. 1. Application Background According to statistics, the total length of the optical cable laid in China exceeds 4.05 & TImes; 106km, about 7.582 & 107; 107 core kilometers, and the length of the microwave line is only 2 & TImes; 105km, and the transmission capacity is much lower than the optical cable line. More than 90% is transmitted through optical cable lines. Although the existing ring network protection technology can continue to ensure the smooth flow of services to a certain extent, it can be seen that due to the line maintenance still adopts the traditional method of maintenance and repair, the line fault recovery takes a long time, and the hidden danger of service failure still exists . Therefore, it is very important to implement real-time monitoring and management of optical cable lines, dynamically observe the deterioration of the transmission performance of optical cable lines, and discover and predict hidden dangers of optical cables in a timely manner to reduce the incidence of optical cable blockage and shorten the duration of optical cable faults. 2. Application of optical cable line monitoring system The optical cable line automatic monitoring system is a subnet of the management area of ​​the transmission network in the telecommunication management network (TMN), and is an important technical means for effectively compressing the duration of the total resistance barrier and discovering the hidden dangers of the optical cable line in time. It uses computer technology, optical fiber communication measurement and other technologies to automatically and real-time monitor and test the quality and operation of optical cable lines. According to different monitoring objects, the monitoring system is generally divided into two categories: the test of the insulation resistance of the cable metal sheath to the ground and the test of the backscattering coefficient of the optical fiber. The former is also called the automatic monitoring system of the cable sheath to the ground insulation. The latter is called the optical fiber automatic monitoring system. 1. Automatic monitoring system for the insulation resistance of the cable sheath to the ground The optical cable (opTIcal fiber cable) is mainly composed of optical fibers (glass fibers as thin as hair) and plastic protective sleeves and plastic sheaths. There are no metals such as gold, silver, copper and aluminum in the optical cable, and generally no recycling value. An optical cable is a certain number of optical fibers that form a cable core in a certain way, which is covered with a jacket, and some is also covered with an outer sheath, which is a communication line used to realize optical signal transmission. That is: a cable formed by optical fiber (optical transmission carrier) through a certain process. The automatic monitoring system of the insulation resistance of the cable sheath to the ground is to achieve the purpose of monitoring the optical cable by remotely measuring the integrity of the metal sheath of the directly buried optical cable to the earth. It uses a remote power supply system to charge the equipment installed in the directly buried optical cable connector box, and collects and analyzes the data to generate an alarm signal. The advantages of this system can provide early warning of damage when the quality of the outer sheath is affected, and can repair damaged optical cables in a timely manner; automatic data collection; the system equipment is relatively simple (compared with fiber monitoring); it provides quantitative fault location signals and shortens Obstacle duration. However, when the system is applied, it also has the following disadvantages. (1) As the domestic direct buried optical cable construction, there are many problems in the insulation resistance of the metal outer sheath to the ground, and the system requires that the insulation resistance to the ground must meet the requirements before installation, so the workload of the early reconstruction is very large ; (2) When installing the sensor in the front station, the connector box must be opened. For the circuit that has opened the circuit, the danger is great; (3) Because the system uses the loop formed by the metal outer sheath of the directly buried optical cable and the ground to test and transmit data, it is not suitable for overhead optical cable lines. Based on the above analysis, because the trunks that urgently need to apply the automatic monitoring system of optical cable lines have been formed and the transformation is difficult, the feasibility of the automatic monitoring system for the insulation resistance of the optical cable sheath to ground is poor.
The FirstPower Long Life Battery is desgined for apllcation as General Purpose and long life. The series focus on improving trickle life that base on Standard series.
We welcome orders with "FirstPower" brand; We are also flexible to accept orders on OEM basis. Contact us now! Your partnership with FirstPower will prove worthy of it.
Long Life Battery Long Life Battery,Gps Tracker Long Life Battery,Long Life Electric Scooter Battery Firstpower Tech. Co., Ltd. , https://www.firstpowersales.com