Intelligent monitoring system for superconducting link

Abstract

The invention discloses an intelligent monitoring system for a superconducting link. The system mainly comprises a main control module, a power detection module, a power attenuation module, a bypass switching module and a liquid crystal display module. The system has the main functions of performing data acquisition, visual man-machine interface display, alarming and processing, historical information recording and system maintenance on the temperature, a radio frequency circuit and a power supply system of a superconducting link system in real time. The system can ensure the normal operationof the superconducting link system, prevent a too intense signal input into a master station from causing the abnormal operation even damage of the master station, and ensure the normal operation of a network link between an antenna and the master station.

Description

technical field [0001] The invention relates to the field of wireless communication, including space and land, mobile and fixed wireless communication fields. Background technique [0002] Existing wireless communication networks have four major problems that cannot be solved for a long time with existing technologies and equipment. These four major problems are: [0003] 1. Due to the limitations of geographical location (ocean, desert and hills, etc.), environmental protection and rights protection (commercial and residential quarters and cultural relics protection areas, etc.), and station construction conditions (electric power, iron towers, transmission, funds, etc.), it is impossible to solve the communication problem through the new station Coverage blind spot problem; [0004] 2. Since the wireless terminal equipment is limited by small antenna size, battery capacity, transmission power, etc., the terminal (for land mobile communication network can be mobile phone o...

AI Technical Summary

Problems solved by technology

[0003] 1. Due to the limitations of geographical location (ocean, desert and hills, etc.), environmental protection and rights protection (commercial and residential quarters and cultural relics protection areas, etc.), and station construction conditions (electric power, iron towers, transmission, funds, etc.), it is impossible to solve the communication problem through the new station Coverage blind spot problem;

[0004] 2. Since the wireless terminal equipment is limited by small antenna size, battery capacity, transmission power, etc., the terminal (for land mobile communication network can be mobile phone or wireless network card, etc., for satellite communication can be a transponder) to the main station (for land mobile communication network, it can be a transponder) The mobile communication network is called a base station, and it can be a ground station for satellite communication) The transmission link is a weak link, and its performance is far lower than the link performance from the main station to the terminal, that is, there is an imbalance between the uplink and downlink. The weak link determines the coverage and communication quality of the network, and becomes the bottleneck of realizing a high-performance network system;

[0005] 3. At present, the number of various main stations and terminal equipment is increasing day by day, wireless communication frequency resources are tight, the frequency of spectrum used is getting higher and higher, the propagation characteristics are getting worse and worse, the distance between main stations is getting closer and closer, intranet and competition network The frequency pollution caused by interference and other interference is becoming more and more serious, which reduces the signal-to-noise ratio of the signal received by the main station and seriously affects the communication coverage, communication quality and system capacity;

[0006] 4. CDMA (Code Division Multiple Access, Code Division Multiple Access) system has self-interference between code channels, resulting in breathing effect, plus various wireless interference and soft handover that requires 30% fixed channel overhead, often makes the system Working capacity does not reach 60% of theoretical capacity

[0009] 1. There is no receiver for all existing equipment, and it is impossible to have a radio frequency bandpass filter with extremely steep receiving filter characteristics, extremely small insertion loss, small fluctuations in the wide-pass frequency band, and a rectangular coefficient close to 1 with traditional technology. Effectively filter out the interference outside the passband (stopband), and reduce the intermodulation interference caused by these interferences entering the receiver, and increase the system noise floor;

[0010] 2. All the above-mentioned devices amplify the received signal and noise at the same time, and the noise is accumulated on the receiving link instead of weakened, and the result is that the quality of the received signal is getting worse and worse;

[0011] 3. The low-noise amplifiers of the RF front-end of the receivers of all the above-mentioned devices work at room temperature. Due to the thermal noise generated by electronic Brownian motion, the amplifier amplifies the noise generated by itself, which raises the bottom noise of the system and deteriorates the signal-to-noise ratio; seriously affect communication coverage and quality and capacity;

[0012] 4. Where the communication coverage and quality are not good, it is often due to network planning, unreasonable master station layout (such as high density of land mobile communication base stations, frequent cell switching or unreasonable coverage and frequency planning, etc.), pilot pollution and various In areas with severe interference, adding master stations, frequency configurations, and equipment configurations in these areas often requires a large amount of investment but brings further interference and frequency pollution, increases system and maintenance costs, and further reduces resource utilization such as frequencies and equipment; In fact, most sources of interference and faults in the network come from tower amplifiers, repeaters and indoor distribution systems, which seriously pollute the network environment;

[0013] 5. Since factors such as available resources, internal and external interference, and changes in business demand are uncontrollable, using the above-mentioned methods and technologies to solve problems will always be a passive fix.

[0019] However, the existing superconducting wireless front-end system products do not have a double bypass function, which cannot fully protect the normal operation of the superconducting wireless front-end system product itself, the normal operation of the network link between the antenna and the main station, and when the signal entering the main station is too strong And cause the master station to work abnormally or even damage the function

In addition, the existing superconducting wireless front-end system products have no visual man-machine interface display and intelligent temperature adjustment function

At present, it is necessary to provide an intelligent monitoring system dedicated to the superconducting link system, which can realize real-time data collection, visual man-machine interface display, alarm and processing, and historical information of the temperature, radio frequency circuit, and power supply system of the superconducting link system. Record and system maintenance; and prevent the main station from working abnormally or even damaged due to the strong signal input to the main station, and ensure the normal operation of the network link from the antenna to the main station

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