CN120751427B - An electromagnetic environment spectrum monitoring system for a communication terminal area - Google Patents
An electromagnetic environment spectrum monitoring system for a communication terminal areaInfo
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- CN120751427B CN120751427B CN202511212393.7A CN202511212393A CN120751427B CN 120751427 B CN120751427 B CN 120751427B CN 202511212393 A CN202511212393 A CN 202511212393A CN 120751427 B CN120751427 B CN 120751427B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/345—Interference values
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Quality & Reliability (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
本发明涉及电磁环境频谱监测领域，具体涉及一种通信终端区域的电磁环境频谱监测系统。包含远程监测设备、监测接收主机以及全向天线，监测接收主机与被测通信终端连接，全向天线连接在监测接收主机的硬件接口上接收区域环境电磁波信号，远程监测设备与监测接收主机进行通信；输入信号分别为通信终端上行与下行载波信号，以及区域环境电磁波信号，输入信号经过下变频，在调理电路中完成模数转换后输入监测接收主机；射频模块通过设定扫描带宽，对监测频段信号频谱进行匀速遍历采集，监测接收主机将采集时域信号转换为频谱数据，按照指定格式将多段数据拼接为完整一帧后，将频谱数据上传至远程监测设备进行显示。本发明适用于电磁环境频谱监测。
This invention relates to the field of electromagnetic environment spectrum monitoring, specifically to an electromagnetic environment spectrum monitoring system for a communication terminal area. It includes a remote monitoring device, a monitoring receiver, and an omnidirectional antenna. The monitoring receiver is connected to the communication terminal under test, and the omnidirectional antenna is connected to the hardware interface of the monitoring receiver to receive regional environmental electromagnetic wave signals. The remote monitoring device communicates with the monitoring receiver. The input signals are the uplink and downlink carrier signals of the communication terminal, and the regional environmental electromagnetic wave signals. The input signals undergo down-conversion and analog-to-digital conversion in a conditioning circuit before being input to the monitoring receiver. The radio frequency module uniformly traverses and collects the spectrum of the monitoring frequency band signal by setting a scanning bandwidth. The monitoring receiver converts the collected time-domain signals into spectrum data, splices multiple data segments into a complete frame according to a specified format, and uploads the spectrum data to the remote monitoring device for display. This invention is applicable to electromagnetic environment spectrum monitoring.
Description
Technical Field
The invention relates to the field of electromagnetic environment spectrum monitoring, in particular to an electromagnetic environment spectrum monitoring system of a communication terminal area.
Background
With the rapid development of wireless communication, radar, satellite navigation, internet of things, 5G/6G and other technologies, the electromagnetic environment is increasingly complex, and frequency spectrum resources are increasingly tense. The electromagnetic spectrum is used as a national strategic resource, and the efficient management and the safety monitoring of the electromagnetic spectrum are vital to the fields of military national defense, public safety, communication guarantee, radio management and the like.
At present, a spectrometer is generally used for efficiently and simply monitoring electromagnetic environment spectrum, but the spectrometer is generally used for directly observing and processing real-time spectrum data, has limited functions, is not suitable for data processing, caching and recording state management information under long-time operation of a communication terminal, and is inconvenient for automatic operation.
An electromagnetic environment monitoring system disclosed in the prior art such as CN220120896U comprises a monitoring antenna, a spectrometer, an upper computer, a control unit and a rotating device. The upper computer is connected with the spectrometer and the control unit respectively, the spectrometer is connected with the monitoring antenna, the control unit is connected with the rotating device, and the rotating device is connected with the monitoring antenna. The control unit responds to the monitoring instruction issued by the upper computer to control the rotating device to rotate so as to drive the rotation control operation of the monitoring antenna, so that the automatic adjustment of the monitoring antenna is realized, the monitoring antenna does not need to be manually replaced, and the monitoring environment is not manually adjusted and arranged due to different areas to be monitored. The spectrometer preprocesses the first electromagnetic signal of the area to be monitored, which is acquired by the monitoring antenna, to obtain a second electromagnetic signal, and the upper computer reads the second electromagnetic signal and outputs corresponding electromagnetic environment data.
According to the scheme, although the electromagnetic environment of the area to be monitored is automatically and intelligently monitored, the monitoring flow is simplified, and the monitoring efficiency is improved. The following disadvantages remain:
The scheme cannot perform interference identification, namely cannot perform interference identification on the detected electromagnetic signals.
The scheme can not select a monitoring mode, namely can not support the task parameter of setting the monitoring center frequency and the monitoring bandwidth in the interference monitoring frequency range, further can not carry out appointed monitoring under the task parameter, and has limited monitoring effect.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides an electromagnetic environment spectrum monitoring system of a communication terminal area, which realizes the multifunctional monitoring of the electromagnetic environment spectrum of the communication terminal area.
The invention adopts the following technical scheme to achieve the aim, and provides an electromagnetic environment spectrum monitoring system of a communication terminal area, which comprises remote monitoring equipment, a monitoring receiving host and an omnidirectional antenna, wherein the monitoring receiving host is connected with a communication terminal to be tested, the omnidirectional antenna is connected to a hardware interface of the monitoring receiving host to receive an electromagnetic wave signal of the area environment, and the remote monitoring equipment is communicated with the monitoring receiving host;
The radio frequency module of the monitoring receiving host comprises three conditioning circuits, input signals are uplink and downlink carrier signals of the communication terminal and regional environment electromagnetic wave signals respectively, and the input signals are subjected to down-conversion and input into the monitoring receiving host after analog-to-digital conversion in the conditioning circuits;
The regional environment electromagnetic wave signal is provided with an independent channel, is input into the monitoring receiving host through the conditioning circuit, the uplink and downlink carrier signals are input into the monitoring receiving host through independent physical interfaces, one signal is selected from the uplink and downlink carrier signal input by controlling two groups of switch matrixes to be input into a digital processing board of the monitoring receiving host during the operation of the monitoring receiving host, and the uplink and downlink carrier signals are monitored by adopting time-sharing processing;
The radio frequency module carries out uniform-speed traversal acquisition on the frequency spectrum of the monitoring frequency band signal by setting the scanning bandwidth, the FPGA in the monitoring receiving host converts the acquired time domain signal into frequency spectrum data, and after the multi-section data are spliced into a complete frame according to a specified format, the frequency spectrum data are uploaded to remote monitoring equipment for display through UDP communication.
Further, the remote monitoring equipment supports two modes of appointed monitoring and full-frequency monitoring, supports setting of monitoring center frequency and monitoring bandwidth task parameters in an interference monitoring frequency range, and transmits parameter configuration to a monitoring receiving host through a TCP protocol, and the monitoring receiving host configures radio frequency center frequency according to the parameters after analysis;
In a designated monitoring mode, supporting to set a monitoring frequency band and an interference signal characteristic index, and when an interference signal meeting the characteristic index appears in the monitoring frequency band, listing the appearance time and actual parameter state of the interference signal in an interference signal display area;
In a full-frequency monitoring mode, the equipment traverses and inquires in a frequency band of 1 GHz-6 GHz according to a specified speed, and all interference signals occurring in the monitoring period are recorded in an interference signal display column according to the discovery time.
Further, an interference identification module of the remote monitoring equipment receives spectrum data, firstly, a signal part in a spectrum is screened out to enter the next process by comparing a difference detection signal between a signal and noise in the spectrum, the signal characteristics are analyzed, the captured signal characteristics are compared with the characteristics of a preset normal working signal, and the interference signal in a frequency band is identified and screened out;
The interference recognition module is internally provided with a learning mechanism, a normal signal characteristic parameter table for calibration is required to be input when the interference recognition module is started for the first time, the normal signal characteristic parameter is stored in the remote monitoring equipment and is used for interference recognition and calling, the captured signal of the selection mark is a normal signal or an abnormal signal during the operation of the monitoring function, and the marking result is fed back to the interference recognition module.
The radio frequency module performs traversing scanning on the frequency spectrum of the signal in the specified frequency band by setting the scanning bandwidth, monitors the FPGA in the receiving host to perform channelizing treatment on the received signal, divides the broadband channel into a plurality of narrowband channels, reduces the sampling rate, enhances the signal resolution, and finally converts the acquired digital signal into frequency spectrum data through FFT;
And the monitoring module in the monitoring receiving host identifies the actual signal characteristics according to the frequency spectrum data and then compares the actual signal characteristics with the standard signal characteristics loaded in advance, so that a carrier frequency spectrum monitoring result is generated, whether the working signal power, the bandwidth and the frequency point signal characteristics in the carrier are normal or not is identified according to the frequency spectrum monitoring result, and the abnormal condition is reported to the remote monitoring equipment.
Further, the monitoring system supports the function of triggering an alarm, sets an alarm threshold parameter according to signal characteristics, and if a signal should appear in a certain frequency band, a real-time signal is lower than or higher than a normal signal power threshold, and a real-time signal is lower than or higher than a normal signal bandwidth threshold alarm threshold, triggers a corresponding alarm function after a measurement result exceeds the threshold, and the remote monitoring device prompts an alarm in a flickering mode of an indicator lamp or an interface icon and automatically stores the alarm frequency band signal.
Further, the monitoring system supports three acquisition modes of manual acquisition, periodic acquisition and trigger acquisition, the remote monitoring equipment automatically and periodically executes acquisition tasks according to configured parameters, the periodic acquisition mode supports the manual clicking of an acquisition switch to interrupt tasks, the trigger acquisition supports the setting of a monitoring frequency band and a trigger characteristic threshold, when signals meeting the trigger threshold appear in the monitoring frequency band during the operation of the equipment, the single acquisition is automatically started, the acquisition tasks are continued until the trigger signals disappear,
The remote monitoring device supports inquiring a file list stored in the monitoring receiving host, selecting files to be downloaded, informing the monitoring receiving host through a control instruction, and uploading the stored files to the remote monitoring device through UDP after the monitoring receiving host receives the instruction.
Further, the monitoring receiving host receives a monitoring task issued by the remote monitoring equipment, and comprises the steps of setting a monitoring designated frequency band, an interference trigger threshold and a set frequency band range, wherein the monitoring receiving host analyzes configuration parameters according to the monitoring task, sets FPGA acquisition parameters and issues a control instruction of a transmitting frequency module, so that a remote control function is realized;
The method comprises the steps that spectrum data collected by a monitoring receiving host are stored in a solid state disk of the monitoring receiving host by default, or collected spectrum data are stored on remote monitoring equipment by selecting setting, file names are automatically created according to collection time and collection parameters, the collected spectrum data are stored as single files or are automatically split and stored in a plurality of files according to the upper limit of the size of the set files, an important data storage area and a general data storage area are supported to be divided in a storage space, after the internal space of the general data storage area is exhausted, new data are automatically cleaned, old data are automatically deleted according to the file creation time, the new data cannot be automatically cleaned after the space in the important data storage area is used up, the new data can be directly discarded, and a user actively selects whether to delete the space;
The remote monitoring device and the monitoring receiving host acquire internal temperature, hard disk space use condition and hardware internal chip locking state information in real time, the acquired information is sent to the operation control center, the monitoring receiving host supports receiving and analyzing Beidou/GPS signals, current longitude and latitude and time information is acquired and reported, and time service is carried out through the remote monitoring device under the scene of weak Beidou/GPS signals.
Further, the power management module of the monitoring receiving host supports PoE standard, a network cable is used for supplying power to the equipment, meanwhile, a power supply interface of the power adapter is reserved, when the equipment is connected with the power adapter, the power supply is automatically switched to power supply, an on-off button is pressed down when the equipment is closed, a power management board card of the power management module sends a starting-up application to the digital board, a power supply switch is opened by a power management chip in the digital board, a state signal with a high state is transmitted to the power management module after the ZYNQ is started, the power module equipment is informed to be started, the on-off button is pressed down when the equipment is started, the power management board card sends a shutdown application to the digital board, the power supply chip in the digital board transmits the shutdown application to the ZYNQ, and a low state signal is pulled down after the software function to be closed is waited for the ZYNQ to normally finish, and the power management board card is informed of power failure.
The beneficial effects of the invention are as follows:
the invention supports the core functions of real-time spectrum monitoring, data acquisition and analysis, interference identification, alarm triggering and the like, and has the characteristics of strong portability, simple and convenient operation, excellent anti-interference capability and the like.
The invention judges whether the received carrier signal is abnormal in the terminal receiving and transmitting stage or not by receiving, identifying and comparing the normal carrier signal standard in real time. When the carrier signal is abnormal, abnormal frequency spectrum data are collected and stored locally, and support is provided for identifying and confirming the working state of the terminal, analyzing and locating the fault cause.
The invention receives and identifies the regional interference signal function through the 1GHz to 6GHz omnidirectional antenna. Capturing and storing interference signals in the frequency range from 1GHz to 6GHz around the terminal, measuring, alarming and displaying the characteristic parameters of the interference signals, and providing support for users to detect the state of the electromagnetic environment around the terminal, identify whether the Beidou signals are affected by interference, optimize the running environment of the terminal and the like.
The invention has the functions of local storage and remote control and automatic on duty. The device is internally provided with a storage space for storing collected data and a work log during operation. The remote software is supported to configure operation parameters, the automatic operation capability is realized according to task instructions, the operation result is supported to be obtained remotely, and the accurate and efficient use of operators is ensured.
Drawings
FIG. 1 is a block diagram of an electromagnetic environment spectrum monitoring system in a communication terminal area according to the present invention;
FIG. 2 is a schematic diagram of the data processing process of the monitoring system of the present invention;
FIG. 3 is a functional block diagram of a remote monitoring device and a monitoring host of the monitoring system of the present invention;
FIG. 4 is a flow chart of the interference identification function of the monitoring system of the present invention;
FIG. 5 is a flow chart of the carrier spectrum monitoring function of the monitoring system of the present invention;
FIG. 6 is a flow chart of the data acquisition function of the monitoring system of the present invention;
FIG. 7 is a flow chart of the remote backhaul function of the monitoring system of the present invention;
fig. 8 is a flow chart of the remote control function of the monitoring system of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The invention provides an electromagnetic environment spectrum monitoring system of a communication terminal area, which comprises remote monitoring equipment, a monitoring receiving host and an omnidirectional receiving antenna, wherein the monitoring receiving host is connected with a communication terminal to be tested, the omnidirectional receiving antenna is connected on a hardware interface of the monitoring receiving host to receive an area environment electromagnetic wave signal, and the remote monitoring equipment is communicated with the monitoring receiving host.
The radio frequency module of the monitoring receiving host is internally provided with three conditioning circuits, input signals are respectively uplink carrier waves, downlink carrier waves and regional environment electromagnetic wave signals of the communication terminal, and the input signals are subjected to down-conversion and input into the digital acquisition board of the monitoring receiving host after the analog-to-digital conversion in the conditioning circuits.
One path of signals in the 1-6 GHz area is provided with an independent channel, the signals are input into a digital processing board of a monitoring receiving host through a conditioning circuit, and a plurality of paths of uplink and downlink carrier signals of customizable operation frequency bands are input into equipment through independent physical interfaces. During the running of the device, one signal is selected from the multiple carrier inputs by controlling the two groups of switch matrixes to be input into the digital processing board, so that the multiple carrier signals are monitored by adopting time-sharing processing.
The design of the digital processing board of the monitoring receiving host adopts the programmable processor chip XCZU EG of Xilinx and the ADI radio frequency transceiver ADRV9009 chip as the main components. The main components of the board card comprise an FPGA (Field-Programmable gate array) chip, a radio frequency transceiver module, a power module, a clock module, a peripheral interface and the like, so that the electromagnetic compatibility requirement is met.
The signal processing module of the monitoring receiving host supports receiving of intermediate frequency signals of 75 MHz-6000 MHz, and the highest receiving bandwidth is 200MHz. After receiving the signals, converting the signals into I/Q signals, then carrying out zero intermediate frequency processing, sampling the I/Q signals by an internal ADC, and sending the acquired data to XCZU EG for processing through a JESD204B interface. The PL (Programmable Logic ) end of XCZU EG is externally hung with 4GB-64bit DDR4, and data can be cached.
The NVME of the external 2TB of PS (Processing System ) end can store the acquired data, the 4G/5G module supports the 4G/5G communication function, and the Beidou/GPS module can provide accurate positioning and time service information for equipment.
The power management module of the monitoring receiving host supports PoE standard, uses a network cable to supply power to the equipment, reserves a power supply interface of the power adapter, automatically switches to power supply when the equipment is connected with the power adapter, presses an on or off button when the equipment is closed, a power management board card of the power management module sends a start-up application to the digital board, a power supply switch is opened by a power management chip in the digital board, a state signal with a high state is transmitted to the power management module after ZYNQ is started, the power module is informed that the equipment is started, the on or off button is pressed when the equipment is started, the power management board card sends a shutdown application to the digital board, and the power chip in the digital board transmits the shutdown application to ZYNQ, waits for the ZYNQ to normally finish a software function to be closed and then pulls down the state signal, and informs the power management board card of power failure.
The communication terminal frequency spectrum monitoring system software consists of embedded software in a monitoring receiving host and remote monitoring equipment software, a C/S software architecture is used, the embedded software is used as a server to run on an ARM operating system customized by zynq chips, the transmission layer encryption protocol SSH is provided for guaranteeing data and information security, the data security is guaranteed, and the remote monitoring equipment software is a client side running on the remote monitoring equipment in a Windows environment. Control and query instructions between software are transmitted through TCP, and data are transmitted through UDP (User Datagram Protocol ). The functions realized by the monitoring and receiving host are shown in fig. 3, embedded software in the monitoring and receiving host can realize state inquiry, GPS analysis, signal acquisition and FFT (Fast Fourier Transform ) conversion on an FPGA, spectrum splicing, data forwarding, acquisition and storage, interference identification and automatic monitoring functions on an ARM, and remote monitoring equipment software can realize interference information acquisition, interference information display, interference alarm function, historical information downloading, monitoring parameter control, control inquiry, acquisition parameter control, remote file list acquisition, acquisition file downloading, real-time spectrum data receiving and spectrum display.
The data process of the whole monitoring system is shown in fig. 2, a frequency conversion module of a monitoring receiving host receives an environmental electromagnetic wave signal in a 1-6 GHz area, an uplink carrier signal of a communication terminal and a downlink carrier signal of the communication terminal, the received signals are converted into intermediate frequency signals, an FPGA of a signal processing module packages spectrum data after receiving digital signals subjected to AD conversion of a radio frequency chip and FFT spectrum conversion, meanwhile, the data of a 4G/5G module and the position of a GPS module are put into a data packet together with timestamp information, the data packet and the position of the GPS module are sent into an ARM of a signal processing module for processing, the data and state information are processed and sent to remote monitoring equipment, and a control instruction sent by the remote monitoring equipment is received, and meanwhile, the corresponding control instruction is sent to the FPGA.
The various functions implemented by the monitoring system are described in detail below.
A) Real-time spectrum display function
The radio frequency module performs uniform-speed traversal acquisition on the frequency spectrum of the monitoring frequency band signal through 200MHz scanning bandwidth.
The FPGA in the monitoring receiving host converts the acquired time domain signals into frequency spectrum data, ARM software splices the multiple sections of data into a complete frame according to a specified format, and the frequency spectrum data is uploaded to remote monitoring equipment for display through UDP communication.
The remote monitoring equipment has the functions of frequency spectrum display and waterfall diagram display. And the software of the remote monitoring equipment interface receives the real-time spectrum data, displays the spectrum and the corresponding spectrum parameters on the interface, and directly observes whether a real-time signal exists in the frequency band.
B) Interference signal capturing and alarming functions
The invention has the function of searching and capturing the 1 GHz-6 GHz full-frequency-band interference signals.
Software on the remote monitoring equipment supports two modes of 'appointed monitoring' and 'full-frequency monitoring', and task parameters such as monitoring center frequency, monitoring bandwidth and the like are set in the interference monitoring frequency band range. The parameter configuration is issued to the embedded software on the monitoring receiving host through the TCP protocol, and the radio frequency center frequency is configured according to the parameter after the software is analyzed.
And in a designated monitoring mode, supporting the setting of the monitoring frequency band and the interference signal characteristic index. When the interference signal meeting the characteristic index appears in the monitoring frequency band, the time and actual parameter state of the interference signal appear in the interference signal display area are listed;
in a full-frequency monitoring mode, the remote monitoring equipment traverses and inquires in a frequency band of 1 GHz-6 GHz according to a specified speed, and all interference signals occurring during monitoring are recorded in an interference signal display column according to the discovery time.
As shown in fig. 4, an interference recognition module in the remote monitoring device receives spectrum data, and first, a difference value detection signal between a signal and noise in the spectrum is compared, a signal part in the spectrum is screened out, and then the next processing is carried out, and signal characteristics are analyzed.
Comparing the captured signal characteristics with the characteristics of a preset normal working signal, identifying and screening out interference signals in a frequency band, uploading the spectrum characteristics of the interference signals, and finally displaying the interference signals on an interface.
Firstly, setting an interference identification range through a software interface of remote monitoring equipment, then carrying out parameter analysis and configuration verification on ARM of a parameter configuration monitoring receiving host, sending configuration parameters to an FPGA program to trigger acquisition at fixed time, setting radio frequency center frequency for data processing, namely FFT conversion, sending converted frequency spectrum data to the remote monitoring equipment for display, simultaneously carrying out interference identification on the ARM of the parameter configuration monitoring receiving host according to the converted frequency spectrum data, and reporting interference information to the remote monitoring equipment.
In order to improve the interference signal recognition efficiency, a learning mechanism is arranged in the interference recognition module. When the equipment is started for the first time, a normal signal characteristic parameter table for calibration is required to be input, and the normal signal characteristic parameter is stored in the equipment for interference identification and calling. During the operation of the monitoring function, a user can manually select whether the captured signal of the mark is a normal signal or an abnormal signal on the remote monitoring device, and the result is fed back to the interference recognition module, so that the interference recognition module updates the recognition algorithm according to the mark result, and the recognition efficiency is further improved.
The interference identification result is recorded on a memory card in the equipment, the subsequent operation can be continuously invoked, and the problem that training data is lost after the equipment is powered off is avoided.
C) Carrier spectrum monitoring function
The monitoring system provided by the invention has the customizable multi-channel uplink and downlink carrier signal working state monitoring function.
As shown in fig. 5, the radio frequency link uses 200MHz scanning bandwidth to perform traversal scanning on the frequency spectrum of the signal in the designated frequency band, the FPGA program in the monitoring device performs channelized processing on the received signal, segments the wideband channel into a plurality of narrowband channels to reduce the sampling rate and enhance the signal resolution, and finally converts the acquired digital signal into spectrum data through FFT.
And the ARM internal monitoring module compares the actual signal characteristics with the standard signal characteristics loaded in advance after identifying the actual signal characteristics, so that a carrier spectrum monitoring result is generated. The method can identify whether the signal characteristics of the working signal power, bandwidth, frequency point and the like in the carrier are normal or not, and report the abnormal condition to a remote interface for recording and prompting.
The method supports the manual setting of the switching of the currently queried frequency band between the uplink carrier frequency band and the downlink carrier frequency band of the terminal to be tested, and supports the setting of a frequency band searching list, and the automatic timing switching of the searching frequency band.
The interference signals identified during the operation of the device are divided according to signal channels and independently displayed in an interface list for inquiry.
D) Triggering an alarm function
And setting alarm threshold parameters according to signal characteristics, such as whether a signal should appear in a certain frequency band, whether a real-time signal is lower than or higher than a normal signal power threshold, whether a real-time signal is lower than or higher than a normal signal bandwidth threshold and other alarm thresholds, and triggering corresponding alarm after a measurement result crosses the threshold.
The remote monitoring device prompts the alarm in the modes of indicator lamp flashing, software interface icon flashing and the like. The alert frequency band signal may be configured to be automatically stored when a trigger alert occurs.
And supporting the alarm function of setting the condition that no effective signal is found for a long time in the specified frequency band so as to monitor whether the receiving link has faults. Parameters such as a monitoring frequency band, an effective signal interval time threshold, an effective signal level threshold and the like can be set as comprehensive triggering conditions. When the effective signal alarm is not found in the appointed frequency band for a long time, the connection condition of the omni-directional antenna or the carrier feeder line is checked.
E) Data acquisition function
The invention supports three acquisition modes of configuration manual acquisition, periodic acquisition and trigger acquisition. The real-time baseband IQ or spectral data is stored for later analysis by other devices.
The manual acquisition mode supports setting the acquisition time length, the acquisition is started after the switch is clicked, the acquisition is automatically ended after the acquisition time is ended, and the acquisition can be actively ended after the switch is clicked again;
The periodic acquisition mode supports the setting of acquisition time length, acquisition interval period and acquisition times, and the software on the remote monitoring equipment automatically and periodically executes acquisition tasks according to configured parameters. The periodic acquisition mode also supports the task of manually clicking an acquisition switch to interrupt;
The trigger acquisition support sets a monitoring frequency band and a trigger characteristic threshold, and when a signal meeting the trigger threshold appears in the monitoring frequency band during the running of the equipment, single acquisition is automatically started, and an acquisition task is continued until the trigger signal disappears.
The data acquisition function is as shown in fig. 6, the acquisition parameters are set on the interface on the remote monitoring equipment, then the parameter configuration is sent to the monitoring receiving host, the ARM of the monitoring receiving host carries out parameter analysis and configuration verification, the configuration parameters are sent to the FPGA program to trigger acquisition at fixed time, the ARM of the monitoring receiving host is also responsible for updating the parameters of the frequency converter at fixed time, switching channels and setting the radio frequency center frequency, carrying out FFT conversion on the digital signals with the specified frequency band, and storing and reporting the converted frequency spectrum data to the remote monitoring equipment.
F) Local data storage function
The monitoring receiving host provides NVME M.2T SSD storage space, supports the storage of collected spectrum data locally, and has the advantages of stability and power failure without loss. The software on the remote monitoring device can be connected with the device to query, download or delete the stored file.
The collected spectrum data is stored in the solid state disk of the monitoring receiving host by default, and the collected spectrum data can be stored on the remote monitoring equipment by selecting setting.
Meanwhile, the file name can be automatically created according to the acquisition time and the acquisition parameters, and can be set and stored as a single file or automatically split and stored in a plurality of files according to the upper limit of the size of the set file.
And supports the division of "important data storage areas" and "general data storage areas" within the storage space.
The method comprises the steps of automatically cleaning the internal space of a general data storage area after the internal space of the general data storage area is exhausted, automatically deleting old data according to the file creation time, automatically cleaning the internal space of an important data storage area after the internal space of the important data storage area is used, directly discarding the new data, and actively selecting whether to delete the space or not by a user.
The remote inquiry of the use condition of the storage space is supported, and the residual space capacity can be inquired in real time through the report state. When the storage space usage reaches 90% and above, a continuous alert will be sent to the software on the remote monitoring device.
G) Remote backhaul function
As shown in fig. 7, the monitoring system of the present invention supports remote backhaul, and can upload the monitoring data and the interference identification record file stored locally in the device to the operation control center through the network.
Software on the remote monitoring device supports inquiring a file list stored in the remote monitoring device, selecting files to be downloaded, informing the monitoring receiving host computer through a control instruction, and uploading the stored files to the remote monitoring device through UDP (user datagram protocol).
The monitoring system of the invention has the functions of manual feedback and automatic feedback:
The manual feedback function supports the selection of local files through software on the remote monitoring equipment, the downloading of the local files one by one or the batch downloading of the local files, the automatic feedback function supports the remote configuration of feedback parameters, the selection of local file paths, the continuous automatic uploading of the files under the condition of stable network, and the reconfiguration of the acquired files after the disconnection or overtime of connection.
H) Remote control function
The monitoring receiving host can receive the monitoring tasks issued by the remote monitoring equipment, such as setting tasks of monitoring specified frequency bands, interference triggering thresholds, setting frequency band ranges and the like, and embedded software on the monitoring receiving host analyzes configuration parameters according to task monitoring, sets FPGA acquisition parameters and transmits frequency module control instructions downwards to realize a remote control function. The remote control function process flow is as shown in fig. 8:
Firstly, setting a monitoring center frequency, a monitoring frequency band width, a monitoring period and the like on an interface of remote monitoring equipment, then, issuing parameter configuration to a monitoring receiving host, carrying out parameter analysis and configuration verification by an ARM of the monitoring receiving host, sending the parameter configuration to a switching radio frequency input channel, enabling the ARM of the monitoring receiving host to be also responsible for updating parameters of a frequency converter at regular time, switching the channel, setting the radio frequency center frequency, carrying out FFT conversion on a digital signal of a designated frequency band, storing the converted frequency spectrum data and uploading the frequency spectrum data and real-time parameters to the remote monitoring equipment.
I) Working state reporting and timing system function
The invention has the capability of self-checking the working state of the equipment, acquires the internal temperature of the equipment, the use condition of the hard disk space, the locking state of the chip in the hardware and the like in real time, and can upload the monitoring result to the operation control center.
The device has the capability of receiving and analyzing Beidou/GPS signals, and acquires and reports the current longitude and latitude and time information of the device.
The device supports time service through a network cable by using remote monitoring software under the scene of weak Beidou/GPS signals.
J) Software update
The device internal logic software and the embedded software support remote updating through a network.
The updating program is packaged into a file, and can be remotely transmitted to the inside of the equipment through a network in a stable network environment, and the equipment is restarted to finish updating after loading is finished.
The current running version is automatically backed up before updating, and the backup program is automatically loaded when the device is restarted and the software is found to be unable to be started due to the failure of updating or other reasons, so that the device is ensured not to crash due to the updating of the software.
In summary, the radio frequency module supports customized design according to the working frequency of the terminal to be tested, achieves the effect of multi-input parallel monitoring function, solves the problem that the traditional spectrometer cannot process multi-frequency-band terminal carriers, only retains radio frequency input, network ports and other necessary information and debugging interfaces, can conduct waterproof and dustproof reinforcement processing, supports power supply through the network ports, improves transportation portability and simplicity of long-term outdoor deployment, provides a replaceable universal solid state disk, supports automatic operation after being connected with a communication terminal, and can realize 24-hour automatic duty. And 4, the interference identification module and the carrier detection module have a data learning function, the history identification data is stored by using a solid state disk in the equipment, and the efficiency and the accuracy of interference identification and carrier abnormality detection are improved.
The foregoing is merely a preferred embodiment of the invention, and it is to be understood that the invention is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (5)
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| CN112730993A (en) * | 2020-12-17 | 2021-04-30 | 北京建筑大学 | An electromagnetic environment monitoring system |
| CN120049997A (en) * | 2025-03-20 | 2025-05-27 | 中瀚天成(北京)科技有限公司 | Nonstandard electromagnetic target detection and smart interference integrated system based on ZYNQ architecture |
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| US12262213B2 (en) * | 2020-05-01 | 2025-03-25 | Digital Global Systems, Inc. | System, method, and apparatus for providing dynamic, prioritized spectrum management and utilization |
| CN220120896U (en) * | 2023-06-26 | 2023-12-01 | 中国联合网络通信集团有限公司 | Electromagnetic environment monitoring system |
| CN120320871B (en) * | 2025-06-16 | 2025-08-19 | 南京博网软件科技有限公司 | Spectrum monitoring and interference analysis method for power grid wireless communication |
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