System for realizing integrated self-inspection of transmitting and receiving efficiency of long-distance antenna feeder system
By introducing RF switching matrix and antenna feed analysis module into the antenna feed system, automated self-test is realized, which solves the problems of complex detection and difficulty in fault positioning of long-distance antenna feed system, improves the reliability of monitoring data and the stability of the hardware system. reduces dependence on manual inspection.
Patent Information
- Application Number
- CN202411352465.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-01-07
AI Technical Summary
In the prior art, the detection of long-distance heaven feed systems is complicated, the location of fault points is difficult, and the manpower is highly dependent on, and the inspection cycle is not dense, resulting in a gradual decrease in monitoring capabilities, affecting the security of the radio environment.
A system including RF switching matrix, antenna feedback analysis module and monitoring and detection receiver is designed to realize automated self-test, automatically switch self-test paths and monitoring paths, record and archive test results, judge data abnormalities and start troubleshooting notifications , reduce dependence on manual inspections.
It realizes high-frequency and automated self-test of the feeding system, promptly detects problems, reduces maintenance time, and improves the reliability of monitoring data and the stability of the hardware system.
Smart Images
Figure CN119276385A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of radio spectrum, in particular to the field of radio signal monitoring and direction finding, and specifically refers to a system for realizing integrated self-checking of the transmission and reception efficiency of a relatively long-distance antenna feed system. Background Art
[0002] This technology is used in the research, allocation and management of radio spectrum resources. It is mainly used in the monitoring and management of radio spectrum by national radio management departments, various radio application units and radio research units.
[0003] Radio spectrum is a limited, reusable natural resource, and also a valuable strategic resource. Radio monitoring stations are built by radio management departments. They are technical facilities that can collect, store and analyze radio spectrum, and are the basic conditions for radio management.
[0004] The monitoring and direction finding of radio signals are important components of radio management. Currently, the main monitoring method for radio environment is to use fixed monitoring stations to perform planned monitoring tasks. According to the surrounding environment of the monitoring site and the requirements for site monitoring coverage, many site monitoring equipment are tens of meters away from the tower antenna and require a long-distance feeder connection. This system is designed for long-distance antenna feeder systems, mainly to solve the problems of complex detection, difficult fault point location, and high reliance on manual labor.
[0005] The fixed radio monitoring (direction finding) system is the main system currently used to perform radio monitoring tasks. It is designed based on the needs of urban (or regional) radio monitoring (direction finding, positioning), and technically focuses on meeting the two major applications of regional monitoring coverage and daily duty monitoring. According to the requirements of the "Provincial Radio Monitoring Facility Construction Specifications and Technical Requirements (Trial)" document, there are currently various types of fixed-mounted monitoring (direction finding) systems with one to four categories and special wireless business monitoring technical standards in China. Different systems choose different installation methods based on the local surrounding environment and site monitoring coverage index requirements. Due to design index requirements, many sites require monitoring and direction finding equipment to be tens of meters away from the tower antenna, requiring a long-distance feeder connection.
[0006] The line transmission loss caused by long-distance feeder lines has a huge impact on the receiving signal-to-noise ratio of radio signals, especially high-frequency radio signals. In order to ensure that the site can still successfully complete the monitoring and direction finding tasks, it is necessary to use high-sensitivity receiving equipment and high-precision cables to improve the signal receiving amplitude of the entire system and improve the transmission efficiency of the antenna feed system. Among them, the transmission efficiency of the antenna feed system is generally reflected in the form of standing wave ratio (VSWR).
[0007] The use of high-precision cables and high-specification connectors to reduce the standing wave ratio of the entire antenna feed system, improve the transmission efficiency of the antenna feed system, and reduce line losses is an effective solution in the early stage of site construction. However, based on the characteristics of fixed monitoring stations operating 24 hours a day and antenna feed systems exposed to outdoor environments, as the fixed monitoring stations age, the aging of the antenna feed system, and the unknown impacts of unexpected environmental disasters will affect the signal transmission capacity of the antenna feed system, causing the site monitoring capacity to gradually decrease, and the observation results of non-signaling will change from large to small, and from small to none, resulting in the loss of supervision and law enforcement capabilities, which is not conducive to the safety of the air radio environment.
[0008] At present, the technical solutions for performance testing and fault location of long-distance antenna feeder systems, especially those installed on large towers, are mainly manual solutions, that is, they rely on professional technicians to carry equipment and tools for regular inspections. They have problems such as uneven personnel levels, no automatic recording of original data, and insufficient inspection cycles. The existing manual inspection solutions are complex to implement and difficult to determine the effectiveness of problem handling. The inspection cycle is mostly once a quarter or once every six months, and some old stations may have the risk of indicators deteriorating or monitoring function failure during the inspection cycle. Summary of the invention
[0009] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a system that satisfies internal integration, high frequency and automation and realizes integrated self-checking of the transmission and reception efficiency of a long-distance antenna feed system.
[0010] In order to achieve the above-mentioned object, the system of the present invention for implementing integrated self-checking of transmission and reception efficiency of a long-distance antenna feed system is as follows:
[0011] The system for realizing integrated self-checking of transmitting and receiving efficiency of a long-distance antenna feed system has the following main features: the system comprises a radio frequency switching matrix, an antenna feed analysis module, a monitoring direction-finding receiver and an antenna feed system; the monitoring direction-finding receiver is connected to the antenna feed system; the radio frequency switching matrix is connected between the monitoring direction-finding receiver and the antenna feed system; the antenna feed analysis module is connected to the radio frequency switching matrix; and the radio frequency switching matrix supports switching of a path between the monitoring direction-finding receiver and the antenna feed system and a path between the monitoring direction-finding receiver and the antenna feed analysis module.
[0012] Preferably, the system supports the execution of self-check tasks and monitoring tasks, and automatically switches the self-check path and the monitoring path; the system monitors the connection between the direction-finding receiver and the antenna feed system during idle time, the monitoring path is turned on, and the monitoring task is executed; the system automatically switches the self-check path, the RF switching matrix disconnects the connection between the monitoring direction-finding receiver and the antenna feed system, connects the antenna feed system to the antenna feed analysis module, and executes the self-check task.
[0013] Preferably, the antenna feed analysis module records the relevant parameter measurement results in sequence when performing the self-check task, and marks the monitoring direction-finding antenna feeder channel corresponding to the test results of this group, and automatically archives the original data.
[0014] Preferably, the system automatically switches back to the monitoring path after the self-check task is completed to continue to perform the monitoring task.
[0015] Preferably, the system determines data anomalies or short-point faults according to default values or user-set thresholds, and initiates fault handling notification after determining that a fault has occurred.
[0016] Preferably, the radio frequency switching matrix is also connected to an industrial computer via an RS232 serial port.
[0017] The system of the present invention is used to realize integrated self-checking of the transmitting and receiving efficiency of the long-distance antenna feeder system, which realizes the internal integration of the site, high-frequency and automated self-checking of the transmitting and receiving efficiency of the long-distance antenna feeder system. The user can set automated and periodic antenna feeder system self-checking tasks. This system does not rely on manual inspections, has a high self-checking density, can promptly detect antenna feeder system problems, and is convenient for arranging maintenance as soon as possible, and has little impact on the execution of long-term monitoring tasks by fixed monitoring stations. The system supports the assembly of new sites and the integrated upgrade of existing sites. It is an effective system solution for improving the hardware system of fixed monitoring stations and the reliability of monitoring data. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 The present invention is a schematic diagram of the structure of a system for realizing integrated self-checking of the transmission and reception efficiency of a long-distance antenna feed system. DETAILED DESCRIPTION
[0019] In order to more clearly describe the technical content of the present invention, further description is given below in conjunction with specific embodiments.
[0020] The system for realizing integrated self-checking of the transmitting and receiving efficiency of a long-distance antenna feed system of the present invention comprises a radio frequency switching matrix, an antenna feed analysis module, a monitoring direction-finding receiver and an antenna feed system, wherein the monitoring direction-finding receiver is connected to the antenna feed system, the radio frequency switching matrix is connected between the monitoring direction-finding receiver and the antenna feed system, the antenna feed analysis module is connected to the radio frequency switching matrix, and the radio frequency switching matrix supports switching the path between the monitoring direction-finding receiver and the antenna feed system and the path between the monitoring direction-finding receiver and the antenna feed analysis module.
[0021] As a preferred embodiment of the present invention, the system supports the execution of self-check tasks and monitoring tasks, and automatically switches the self-check path and the monitoring path; the system monitors the connection between the direction-finding receiver and the antenna feed system during idle time, the monitoring path is turned on, and the monitoring task is executed; the system automatically switches the self-check path, the RF switching matrix disconnects the connection between the monitoring direction-finding receiver and the antenna feed system, connects the antenna feed system to the antenna feed analysis module, and executes the self-check task.
[0022] As a preferred embodiment of the present invention, the antenna feed analysis module records the relevant parameter measurement results in sequence when performing the self-check task, and marks the monitoring direction-finding antenna feeder channel corresponding to the test results of this group, and automatically archives the original data.
[0023] As a preferred embodiment of the present invention, the system automatically switches back to the monitoring path after the self-check task is completed to continue to perform the monitoring task.
[0024] As a preferred embodiment of the present invention, the system determines data anomalies or short point faults according to default values or user-set thresholds, and initiates fault handling notification after determining that a fault has occurred.
[0025] As a preferred embodiment of the present invention, the radio frequency switching matrix is also connected to an industrial computer via an RS232 serial port.
[0026] In a specific embodiment of the present invention, an integrated self-checking system for transmitting and receiving efficiency of a long-distance antenna feed system is proposed. On the basis of not changing the hardware structure of the mainstream fixed monitoring and direction finding system, an electrically controlled RF switching matrix and an antenna feed analysis module are added between the monitoring and direction finding receiver and the antenna feed system.
[0027] After the site integrates this system, the site can automatically switch the antenna system to the self-test path during idle time, complete the self-test in a short time, and automatically record the original data, including transmission efficiency characterization data (VSWR) and fault breakpoint location data (DTF, if the system is judged to be faulty). After the test is completed, it will automatically switch back to the monitoring path and continue to perform the monitoring task. The schematic diagram is shown as follows Figure 1 shown.
[0028] The monitoring receiver is ME218 in the figure, and the direction-finding receiver is MD508 in the figure. The antenna system is composed of the RF matrix switch, RFH and RFD series antennas in the figure, which provide air interface signal input for the monitoring and direction-finding receiver and are the objects for the antenna analysis module to analyze the transmission and reception efficiency of the system.
[0029] The working process of the present invention is as follows:
[0030] 1. The connection between the site monitoring direction-finding receiver and the antenna feed system is disconnected and connected in series to the RF switching matrix.
[0031] 2. The RF switching matrix uses RS232 serial port to realize program control. When the program control is not started, the RF interface of the monitoring or direction finding receiver is directly connected to the corresponding channel of the antenna feed system through the RF switching matrix; when the program control is started, all the RF channels of the monitoring and direction finding antenna feed system are disconnected from the monitoring and direction finding receiver in turn, and the RF switching matrix controls this channel to connect to the antenna feed analysis module.
[0032] 3. The antenna and feeder analysis module supports test functions such as Cable Loss, VSWR and DTF. According to the control of the system software, it records the measurement results of relevant parameters in sequence, marks the monitoring direction-finding antenna and feeder channels corresponding to this group of test results, and automatically archives the original data.
[0033] 4. After all channels have completed the test in sequence, the program automatically switches from the self-test task to the monitoring task. The system software background organizes the original data and generates a test data report. The system determines data anomalies or short-point failures according to the default value or user-set threshold. After determining that a failure has occurred, the person in charge of the fixed monitoring station is notified immediately by email, SMS, etc. according to the method set in the software, so as to facilitate timely arrangement of manual processing.
[0034] The specific implementation scheme of this embodiment can refer to the relevant description in the above embodiment, which will not be repeated here.
[0035] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.
[0036] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" refers to at least two.
[0037] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.
[0038] The system of the present invention is used to realize integrated self-checking of the transmitting and receiving efficiency of the long-distance antenna feeder system, which realizes the internal integration of the site, high-frequency and automated self-checking of the transmitting and receiving efficiency of the long-distance antenna feeder system. The user can set automated and periodic antenna feeder system self-checking tasks. This system does not rely on manual inspections, has a high self-checking density, can promptly detect antenna feeder system problems, and is convenient for arranging maintenance as soon as possible, and has little impact on the execution of long-term monitoring tasks by fixed monitoring stations. The system supports the assembly of new sites and the integrated upgrade of existing sites. It is an effective system solution for improving the hardware system of fixed monitoring stations and the reliability of monitoring data.
[0039] In this specification, the present invention has been described with reference to specific embodiments thereof. However, it is apparent that various modifications and variations may be made without departing from the spirit and scope of the present invention. Therefore, the specification and drawings should be regarded as illustrative rather than restrictive.
Claims
1. A system for implementing integrated self-checking of the transmission and reception efficiency of a long-distance antenna feed system, characterized in that: The system comprises a radio frequency switching matrix, an antenna feed analysis module, a monitoring direction finding receiver and an antenna feed system, wherein the monitoring direction finding receiver is connected to the antenna feed system, the radio frequency switching matrix is connected between the monitoring direction finding receiver and the antenna feed system, the antenna feed analysis module is connected to the radio frequency switching matrix, and the radio frequency switching matrix supports switching the path between the monitoring direction finding receiver and the antenna feed system and the path between the monitoring direction finding receiver and the antenna feed analysis module.
2. The system for realizing integrated self-checking of transmission and reception efficiency of a long-distance antenna feed system according to claim 1, characterized in that: The system supports the execution of self-check tasks and monitoring tasks, and automatically switches the self-check path and the monitoring path; the system monitors the connection between the direction-finding receiver and the antenna feed system during idle time, the monitoring path is turned on, and the monitoring task is executed; the system automatically switches the self-check path, the radio frequency switching matrix disconnects the connection between the monitoring direction-finding receiver and the antenna feed system, connects the antenna feed system to the antenna feed analysis module, and executes the self-check task.
3. The system for realizing integrated self-checking of transmission and reception efficiency of a long-distance antenna feed system according to claim 2, characterized in that: The antenna feed analysis module records the measurement results of relevant parameters in sequence when performing the self-check task, and marks the monitoring direction-finding antenna feed channel corresponding to the test results of this group, and automatically archives the original data.
4. The system for realizing integrated self-checking of transmission and reception efficiency of a long-distance antenna feed system according to claim 2, characterized in that: The system automatically switches back to the monitoring path after the self-check task is completed and continues to perform the monitoring task.
5. The system for realizing integrated self-checking of transmission and reception efficiency of a long-distance antenna feed system according to claim 1, characterized in that: The system determines data anomalies or short-point faults according to default values or user-set thresholds, and initiates fault handling notification after determining that a fault has occurred.
6. The system for realizing integrated self-checking of transmission and reception efficiency of a long-distance antenna feed system according to claim 1, characterized in that: The radio frequency switching matrix is also connected to the industrial computer via the RS232 serial port.