WO2019223812A1

WO2019223812A1 - Electromagnetic interference monitoring device

Info

Publication number: WO2019223812A1
Application number: PCT/CN2019/095042
Authority: WO
Inventors: 姚继明; 卜宪德; 陶静; 张刚; 张�浩; 郭经红; 韦磊; 郭云飞; 刘世栋; 刘川; 吴鹏; 王玮; 喻强; 朱道华; 孙云晓; 郭雅娟
Original assignee: 全球能源互联网研究院有限公司; 国网江苏省电力有限公司电力科学研究院; 国家电网有限公司; 国网江苏省电力有限公司
Priority date: 2018-05-24
Filing date: 2019-07-08
Publication date: 2019-11-28
Also published as: CN108594045A

Abstract

An electromagnetic interference monitoring device for a dedicated wireless network for electrical power, comprising: a main control module (1), a radio frequency module (2), and an analysis module (3). The main control module (1) receives a monitoring instruction transmitted by a monitoring terminal, and configures, according to the monitoring instruction, the frequency spectrum collection parameter for the radio frequency module (2); the radio frequency module (2) collects, according to the frequency spectrum collection parameter, frequency spectrum data of a pre-set target frequency; the analysis module (3) compares past frequency spectrum data with collected frequency spectrum data, analyzes and finds anomalous frequency spectrum data, generates, according to the anomalous frequency spectrum data, a monitoring parameter adjustment result, and transmits to the main control module (1) the generated anomalous frequency spectrum data result and monitoring parameter adjustment result; the main control module (1) adjusts, according to the monitoring parameter adjustment result, the frequency spectrum collection parameter for the radio frequency module (2).

Description

Electromagnetic interference monitoring device

This application claims priority from a Chinese patent application filed with the Chinese Patent Office on May 24, 2018, with application number 201810509378.2, the entire contents of which are incorporated herein by reference.

Technical field

This application relates to the field of electromagnetic interference monitoring, for example, an electromagnetic interference monitoring device for a power wireless private network.

Background technique

Electromagnetic spectrum interference monitoring refers to the application of various equipment and various technologies to measure the parameters and spectrum characteristics of radio signals in a certain frequency band in a certain area, to statistics and analyze data on the use of frequency bands, and based on the monitored data Identify and eliminate illegal signals to ensure normal communication and avoid harmful interference.

However, the electromagnetic spectrum interference monitoring process of related technologies is generally: determining the monitoring area, setting the monitoring frequency band, intercepting the electromagnetic signals, monitoring the parameter information of the intercepted signals, and then comparing the parameters with the original monitoring database for statistical analysis of the electromagnetic environment. situation. If the parameters are not in accordance with the regulations, determine whether it is an interference signal. When it is determined that the intercepted signal is an interference signal, direction detection, positioning, and investigation are conducted according to law. At the same time, the interference signal parameter information is stored in the signal feature library for future signal reference. Such monitoring technology can only mark the interference signals and provide data references. Due to the limited data collected, it is impossible to achieve more detailed monitoring and in-depth analysis of the interference signals.

Summary of the Invention

Therefore, the present application provides an electromagnetic interference monitoring device for a power wireless private network, which avoids a situation in which the electromagnetic interference signal cannot be more closely monitored and further analyzed in the related art.

An embodiment of the present application provides an electromagnetic interference monitoring device for a power wireless private network, including: a main control module, a radio frequency module, and an analysis module. The main control module is connected to the radio frequency module and the analysis module, and the main control module A module configured to receive a monitoring instruction sent by a monitoring terminal, and set a spectrum acquisition parameter of the radio frequency module according to the monitoring instruction; the radio frequency module is configured to acquire spectrum data of a preset target frequency according to the spectrum acquisition parameter; The analysis module is configured to compare historical spectrum data with the collected spectrum data, and determine the acquisition when a deviation value between the collected spectrum data and the historical spectrum data is greater than a preset value. The spectrum data is abnormal spectrum data, and a monitoring parameter adjustment result is generated according to the abnormal spectrum data, and the abnormal spectrum data and the generated monitoring parameter adjustment result are sent to the main control module; the main control module is further configured to Adjusting the spectrum acquisition parameters of the radio frequency module according to the monitoring parameter adjustment result.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an electromagnetic interference monitoring device for a power wireless private network provided in an embodiment of the present application;

2 is a composition diagram of a specific example of an analysis module for an electromagnetic interference monitoring device of a power wireless private network provided in an embodiment of the present application;

FIG. 3 is a composition diagram of a second specific example of an electromagnetic interference monitoring device for a power wireless private network provided in an embodiment of the present application; FIG.

FIG. 4 is an exemplary composition diagram of a communication module in an electromagnetic interference monitoring device for a power wireless private network provided in an embodiment of the present application; FIG.

FIG. 5 is another exemplary composition diagram of a communication module in a power wireless private network electromagnetic interference monitoring device provided in an embodiment of the present application; FIG.

FIG. 6 is a third exemplary composition diagram of an electromagnetic interference monitoring device for a power wireless private network provided in an embodiment of the present application; FIG.

FIG. 7 is a fourth example composition diagram of an electromagnetic interference monitoring device for a power wireless private network provided in an embodiment of the present application; FIG.

FIG. 8 is a composition diagram of a fifth example of the electromagnetic interference monitoring device for a power wireless private network provided in an embodiment of the present application.

Detailed ways

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are part of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. An embodiment of the present application provides an electromagnetic interference monitoring device for a power wireless private network. As shown in FIG. 1, the device includes a main control module 1, a radio frequency module 2, and an analysis module 3.

The main control module 1 receives the monitoring instruction sent by the monitoring terminal, and sets the spectrum acquisition parameters of the radio frequency module 2 according to the monitoring instruction. In the embodiment of the present application, the monitoring terminal is a spectrum background management center. The monitoring manager sends monitoring instructions to the main control module 1 by setting a monitoring instruction in the spectrum background management center. The spectrum acquisition parameters set by the monitoring instruction include: a preset center frequency, Bandwidth, step size, number of sampling points, and sampling period. The radio frequency module 2 collects spectrum data of a preset target frequency according to a spectrum acquisition parameter. In one embodiment, the frequency range monitored by the RF module 2 is 70MHz-6GHz, covering the 230MHz frequency band and 1.8GHz frequency band of the current power wireless private network.

The analysis module 3 compares the historical spectrum data with the collected spectrum data. When the deviation value between the collected spectrum data and the historical spectrum data is greater than a preset value, the analysis module 3 determines that the collected spectrum data is abnormal spectrum data, and The monitoring parameter adjustment result is generated according to the abnormal spectrum data, and the generated abnormal spectrum data result and the monitoring parameter adjustment result are sent to the main control module 1.

In an embodiment, as shown in FIG. 2, the analysis module 3 includes a comparison sub-module 31 and a spectrum acquisition parameter adjustment sub-module 32.

The comparison sub-module 31 compares the historical spectrum data with the collected spectrum data. When the deviation value between the collected spectrum data and the historical spectrum data is greater than a preset value, it is determined that the collected spectrum data is abnormal spectrum data. When the deviation between the spectrum data and the historical spectrum data is less than or equal to a preset value, it is determined that the collected spectrum data is normal spectrum data.

In the embodiment of the present application, the historical spectrum data may be generated after performing average iteration according to the spectrum data collected multiple times. Referring to FIG. 3, in an embodiment, the comparison sub-module 31 compares the real-time collected spectrum data with the historical spectrum data (same frequency band) in the storage module 5. When the deviation value is greater than a preset value, the collected The spectrum data is abnormal. In practical applications, the spectral amplitudes of different frequencies are different at the same time. The spectral amplitude of each frequency has a corresponding preset value. The actual measured spectral amplitude and the corresponding spectral amplitude preset value. In contrast, when the difference exceeds or falls below 10% of the preset value, it is considered to be abnormal spectrum data.

The spectrum collection parameter adjustment sub-module 32 adjusts the spectrum collection parameter according to the frequency range of the abnormal spectrum data, and the adjusted spectrum collection parameter includes at least one of the spectrum collection parameters set by the monitoring instruction. In practical applications, the spectrum acquisition parameters can be adjusted according to the specific conditions of the abnormal spectrum data.

The following uses an example to illustrate the process of adjusting the spectrum acquisition parameters implemented by the electromagnetic interference monitoring device of the electric power wireless private network in the embodiment of the present application. For example, the frequency band to be monitored is the 1785-1805MHz frequency band. The analysis of the analysis module 3 reveals that the interfering base station is near 1795MHz. Therefore, the center frequency needs to be adjusted to 1795MHz and the bandwidth is set to 10M. Therefore, the monitoring frequency range is adjusted to 1790-1800MHz. At the same time, the number of sampling points needs to be increased to collect more spectrum data, for example, it is increased from the original 512 acquisition points to 1024 acquisition points. The sampling interval is based on the actual electromagnetic interference changes. If the interference is fixed, that is, the interference signal is always transmitted, the sampling interval does not need to be changed. If it is instantaneous interference, the sampling interval must be shortened. For example, it can be adjusted to 1 from the previous 5 second acquisition. Collect once every second. If you do not adjust the sampling interval, you will not be able to track the interference signal. For the step size, you need to follow the monitoring accuracy requirements in the actual application. For example, if the interference range is within 1M, the monitoring step size can be adaptively reduced. In the range of 10M, the reduction of the monitoring step will cause a large amount of calculation. Therefore, it is necessary to decide whether to adjust the step according to the actual monitoring accuracy requirements. Through the above process, the analysis module 3 generates a monitoring parameter adjustment result according to the abnormal spectrum data.

The main control module 1 adjusts the spectrum acquisition parameters of the radio frequency module 2 according to the monitoring parameter adjustment result. In the embodiment of the present application, the main control module 1 adapts the changed parameters according to the abnormal spectrum data result and monitoring parameter adjustment result sent by the analysis module 3, so as to achieve more refined monitoring and analysis of the abnormal spectrum data.

In an embodiment, as shown in FIG. 3, the above-mentioned electromagnetic interference monitoring device of the electric power wireless private network further includes: a positioning module 4, the positioning module 4 is configured to obtain positioning data of the electromagnetic interference monitoring device in real time. In the embodiment of the present application, The main control module 1 controls the positioning module 4 to locate the electromagnetic interference detection device of the electric wireless private network according to the monitoring command sent by the monitoring terminal. According to the positioning data of the electromagnetic interference detection device of the electric wireless private network, the base station or equipment that generates the electromagnetic interference signal can be obtained. Location information. The positioning module 4 includes at least one of a Beidou positioning sub-module and a GPS positioning sub-module. If the device that transmits electromagnetic interference is fixed, the positioning data is transmitted only once; if the device that transmits electromagnetic interference is mobile (for example, installed in a car), it is necessary to obtain its positioning data at different times in real time.

In an embodiment, as shown in FIG. 3, the above-mentioned electromagnetic interference monitoring device for a power wireless private network further includes a storage module 5 configured to store historical spectrum data, collected spectrum data, and positioning data. In the embodiment of the present application, the storage module 5 includes an internal memory card and an external memory, and a storage period of the external memory is greater than a storage period of the internal memory card. For example, the internal memory card can store data for 3 days, and the external memory can store data for one month.

In an embodiment, when the historical spectrum data, the collected spectrum data and the positioning data are stored in the storage module 5, they are all transmitted through a bus inside the electromagnetic interference monitoring device.

In an embodiment, as shown in FIG. 3, the above-mentioned electromagnetic interference monitoring device for a power wireless private network further includes: a communication module 6, and the main control module 1 receives a monitoring instruction sent by a monitoring terminal through the communication module 6, and the main control module 1 The control storage module 5 sends the collected spectrum data to the monitoring terminal through the communication module 6, and the positioning module 4 sends the positioning data to the monitoring terminal through the communication module 6.

In an embodiment, as shown in FIG. 4, the communication module 6 includes a wired communication sub-module 61 and a wireless communication sub-module 62, and when the wired communication sub-module 61 is in a normal operating state, the wired communication sub-module 61 is used. Transmission of monitoring instructions, abnormal spectrum data, normal spectrum data and positioning data. When the wired communication sub-module 61 is unavailable, the wireless communication sub-module 62 transmits monitoring instructions, abnormal spectrum data, normal spectrum data, and positioning data. Among them, the normal spectrum data is transmitted using a preset period.

In the embodiment of the present application, when both the wired communication sub-module 61 and the wireless communication sub-module 62 can be selected, the wired communication sub-module 61 is preferentially used because the channels of the wired communication method are more stable and the communication transmission rate is faster. In the case that the wired communication sub-module 61 cannot be used, for example, the environment used is not suitable for the deployment of a wired transmission device, or a wired transmission device has an abnormal line, the wireless communication sub-module 62 is used for transmission. In the embodiment of the present application, the abnormal spectrum is transmitted. The data is transmitted in real time, and the normal spectrum data is transmitted using a preset period, for example, it can be transmitted every hour.

In the embodiment of the present application, when transmitting the collected spectrum data, the communication module 6 adopts an adaptive transmission mechanism oriented to the characteristics of the spectrum data. In the case that the monitoring device determines that the data transmission is selected by the wired communication mode, the collected complete spectrum data is transmitted in real time. In the case that the monitoring device determines that the data transmission is selected by wireless communication, only abnormal interference spectrum data is transmitted in real time. Normal spectrum data is transmitted using a preset period. The characteristics of the spectrum data are characterized according to whether the data is abnormal.

In an embodiment, as shown in FIG. 5, the wireless communication sub-module 62 includes: a public wireless network communication unit 621, a private wireless network communication unit 622, and a WIFI unit 623, in which the priorities of the three wireless communication methods are in order The wireless communication unit 622 of the power private network, the wireless communication unit 621 of the public power network, and the WIFI unit 623.

In an embodiment, as shown in FIG. 6, the above-mentioned electromagnetic interference monitoring device for a power wireless private network further includes an antenna module 7, and the antenna module 7 is connected to the radio frequency module 2 and the communication module 6 respectively, and the radio frequency module 2 passes through the antenna module 7. The spectrum data of the preset target frequency is acquired, and the communication module 6 sends the collected spectrum data and positioning data to the monitoring terminal through the antenna module 7. In the embodiment of the present application, the antenna module 7 is connected to the wireless communication sub-module 62 in the communication module 6.

In an embodiment, as shown in FIG. 7, the above-mentioned electromagnetic interference monitoring device of the electric power wireless private network further includes: a compression module 8 configured to obtain the spectrum data collected by the radio frequency module 2, and compressing the spectrum data and sending the spectrum data. Give the storage module 5. In the embodiment of the present application, the stability and correlation of the spectrum data is used, that is, the wireless spectrum environment is relatively stable for a period of time. Compressing the collected spectrum data can effectively reduce the storage space requirement and the pressure of the spectrum data transmission channel. .

In an embodiment, as shown in FIG. 8, the above-mentioned electromagnetic interference monitoring device for a power wireless private network further includes: a power supply module 9, which is configured as a main control module 1, a radio frequency module 2, an analysis module 3, and a positioning module 4. The storage module 5, the communication module 6, the antenna module 7, and the compression module 8 are powered, thereby ensuring the normal operation of the entire monitoring device.

The electromagnetic interference monitoring device for a power wireless private network provided by the embodiment of the present application receives a monitoring instruction sent by a monitoring terminal through a main control module, and sets a frequency acquisition parameter of a radio frequency module according to the monitoring instruction; Spectrum data; the analysis module compares historical spectrum data with collected spectrum data, analyzes abnormal spectrum data, and generates monitoring parameter adjustment results based on the abnormal spectrum data, and sends the generated abnormal spectrum data results and monitoring parameter adjustment results to the master Control module; the main control module adjusts the spectrum acquisition parameters of the RF module according to the monitoring parameter adjustment result. The device provided by this application can perform more detailed detection and interference analysis on electromagnetic interference signals of a power wireless private network, while supporting more communication transmission channels, improving transmission reliability, and improving the operation and maintenance level and speed of the power wireless private network. .

Claims

An electromagnetic interference monitoring device includes a main control module, a radio frequency module, and an analysis module, and the main control module is connected to the radio frequency module and the analysis module, respectively;

The main control module is configured to receive a monitoring instruction sent by a monitoring terminal, and set a spectrum acquisition parameter of the radio frequency module according to the monitoring instruction;

The radio frequency module is configured to collect spectrum data of a preset target frequency according to the spectrum collection parameter;

The analysis module is configured to compare historical spectrum data with the collected spectrum data, and determine a value of the collected spectrum if a deviation value between the collected spectrum data and the historical spectrum data is greater than a preset value. The spectrum data is abnormal spectrum data, and a monitoring parameter adjustment result is generated according to the abnormal spectrum data, and the abnormal spectrum data and the generated monitoring parameter adjustment result are sent to the main control module;

The main control module is further configured to adjust a spectrum acquisition parameter of the radio frequency module according to an adjustment result of the monitoring parameter.
The device according to claim 1, wherein the spectrum acquisition parameters set by the monitoring instruction include: a preset center frequency of the target frequency, a bandwidth, a step size, a number of sampling points, and a sampling period.
The apparatus according to claim 2, wherein the analysis module comprises: a comparison sub-module and a spectrum acquisition parameter adjustment sub-module,

The comparison sub-module is configured to compare historical spectrum data with the collected spectrum data, and determine the acquisition when a deviation value between the collected spectrum data and the historical spectrum data is greater than a preset value. The spectrum data is abnormal spectrum data, and when the deviation value between the collected spectrum data and the historical spectrum data is less than or equal to the preset value, determining that the spectrum data is normal spectrum data;

The spectrum acquisition parameter adjustment sub-module is configured to adjust at least one parameter of the spectrum acquisition parameters set by the monitoring instruction according to a spectrum range of the abnormal spectrum data.
The device according to claim 1, further comprising: a positioning module, the positioning module being connected to the communication module and the main control module, respectively;

The positioning module is configured to acquire positioning data of the electromagnetic interference monitoring device in real time.
The device according to claim 4, further comprising: a storage module, the storage module being connected to the main control module and the analysis module, respectively;

The storage module is configured to store the historical spectrum data, the collected spectrum data, and the positioning data.
The device according to claim 5, further comprising: a communication module, the communication module being respectively connected to the main control module, the positioning module, and the storage module;

The main control module receives a monitoring instruction sent by the monitoring terminal through the communication module, the main control module controls the storage module to send the collected spectrum data to the monitoring terminal through the communication module, and The positioning module sends positioning data to the monitoring terminal through the communication module.
The apparatus according to claim 6, wherein the communication module comprises: a wired communication sub-module and a wireless communication sub-module;

The wired communication sub-module is configured to transmit the monitoring instruction, the abnormal spectrum data, the normal spectrum data, and all information through the wired communication sub-module when the wired communication sub-module is in a normal running state. Mentioned positioning data;

The wireless communication sub-module is configured to transmit the monitoring instruction, the abnormal spectrum data, the normal spectrum data, and the positioning through the wireless communication sub-module when the wired communication sub-module cannot be used. Data, wherein the normal spectrum data is transmitted using a preset period.
The device according to claim 7, wherein the wireless communication sub-module comprises a power public network wireless communication unit, a power private network wireless communication unit, and a wireless fidelity WIFI unit.
The device according to claim 6, further comprising an antenna module, the antenna module being respectively connected to the radio frequency module and the communication module, and the radio frequency module collecting the frequency spectrum of the preset target frequency through the antenna module. Data, the communication module sends the collected spectrum data and the positioning data to the monitoring terminal through the antenna module.
The device according to claim 9, further comprising a compression module connected to the main control module and the storage module, respectively;

The compression module is configured to obtain spectrum data collected by the radio frequency module, and compress the collected spectrum data and send the compressed spectrum data to the storage module.
The apparatus according to claim 10, further comprising a power supply module,

The power supply module is configured to supply power to the main control module, the radio frequency module, the analysis module, the positioning module, the storage module, the communication module, the antenna module, and the compression module.