CN114785436B - Radio frequency interference intensity detection system and method - Google Patents
Radio frequency interference intensity detection system and method Download PDFInfo
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- CN114785436B CN114785436B CN202210525084.5A CN202210525084A CN114785436B CN 114785436 B CN114785436 B CN 114785436B CN 202210525084 A CN202210525084 A CN 202210525084A CN 114785436 B CN114785436 B CN 114785436B
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- 238000001514 detection method Methods 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims description 7
- 230000005855 radiation Effects 0.000 claims abstract description 37
- 238000004364 calculation method Methods 0.000 claims abstract description 27
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 14
- 238000009825 accumulation Methods 0.000 claims description 6
- 238000013500 data storage Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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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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- 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
Abstract
The invention discloses a radio frequency interference intensity detection system and a radio frequency interference intensity detection method, wherein the radio frequency interference intensity detection system comprises a hardware system and a detection system, the hardware system comprises hardware equipment, and the hardware equipment comprises a detection machine body, a control key, an indicator light, an IIC interface, a UART interface and a liquid crystal screen. The radio frequency interference intensity detection mode adopts a double-antenna frequency division detection mode, so that a receiving mode of low-frequency and high-frequency interval ranges of interference signals is realized, the receiving range of the interference signals is enlarged, meanwhile, the radiation intensity of the signals under different gains is calculated for the radio frequency interference intensity, the radiation intensity after frequency and power interpolation in the radiation is calculated, the calculation of interference time is matched, the comprehensiveness of radio frequency interference signal detection is effectively realized, meanwhile, the error generated by radio frequency interference intensity detection is effectively reduced by calculating the two radiation intensities, and the accuracy of the radiation intensity detection is ensured.
Description
Technical Field
The invention relates to the technical field of radio frequency interference detection, in particular to a radio frequency interference intensity detection system and a radio frequency interference intensity detection method.
Background
The radio frequency is a high-frequency alternating current, namely electromagnetic wave, and the radio frequency interference is interference caused by the electromagnetic wave, for example, two electromagnetic waves with different frequencies can be simultaneously received by a receiver to cause interference, and harmonic interference exists near a transmitting station to interfere other receiving devices.
For some precise or metering instruments, data errors and reset occur when radio frequency interference with high power is received, and currently, for the detection of the radio frequency interference intensity, the radio frequency signal intensity is judged mainly through matching of an interference radiation receiving antenna with a radio frequency detection circuit board.
Disclosure of Invention
The invention aims to provide a system and a method for detecting radio frequency interference intensity, which are used for solving the problems of limited range of a received signal and error of detected radiation intensity in the traditional radio frequency interference detection mode in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the system comprises a hardware system and a detection system, wherein the hardware system comprises hardware equipment, the hardware equipment comprises a detection machine body, a control key, an indicator light, an IIC interface, a UART interface and a liquid crystal screen, the control key, the indicator light, the IIC interface, the UART interface and the liquid crystal screen are positioned on one side of the detection machine body, the detection system comprises detection equipment, the detection equipment comprises a low-frequency antenna, a high-frequency antenna, an MCU, a ferroelectric memory and an ADC signal collector, the MCU is respectively connected with the ADC signal collector, the ferroelectric memory, the liquid crystal screen, the UART interface, the IIC interface, the indicator light and the control key through integrated wires, and the ADC signal collector is respectively connected with the low-frequency antenna and the high-frequency antenna through circuits. As a preferred implementation mode of the invention, the low-frequency antenna and the high-frequency antenna are connected to the detecting body through the wire fixing fastener, and a circuit adopted between the low-frequency antenna and the high-frequency antenna and the ADC signal collector is a two-channel radio frequency gain scanning circuit.
As a preferred embodiment of the present invention, the low frequency antenna is a 30MHz wound antenna, and the high frequency antenna is an 800MHz PCB printed antenna.
As a preferred implementation mode of the invention, the MCU is a singlechip, and an interpolation control module, an RTC and a data calculation module are welded on an equipment installation area of the MCU main circuit.
As a preferred implementation mode of the invention, the ferroelectric memory stores pre-stored values of frequency points of delivery, wherein the pre-stored values of frequency points of delivery are respectively 10MHz, 30MHz, 100MHz, 800MHz and 3GHz.
The specific flow of the radio frequency interference intensity detection method related to the radio frequency interference intensity detection system comprises the following steps:
s1, acquiring interference signals, namely scanning and receiving radio frequency interference signals with different signal intensities through a low-frequency antenna and a high-frequency antenna in cooperation with different gain values, and acquiring signals through an ADC signal acquisition device;
s2, calculating interference radiation intensity, transmitting the acquired signals to an MCU, calculating the received radiation intensity of radio frequency under two gains through a data calculation module, combining factory frequency points, and calculating the received radiation intensity of a low-frequency antenna and a high-frequency antenna through the data calculation module again;
s3, calculating the actual radiation intensity, interpolating the frequency and the power of the radiation intensity through an interpolation control module, calculating the actual intensity value of the acquired received signal by means of a data calculation module, and estimating the frequency value range of the emergent frequency signal;
s4, calculating interference time: in the whole radiation intensity calculation process, the RTC records the interference starting time and the interference ending time, and the data calculation module accumulates the time values so as to record the maximum interference value and the interference accumulation time;
s5, data storage, wherein the signal intensity value, the maximum interference value and the interference accumulation time are stored in real time through the ferroelectric memory and are displayed through the liquid crystal display.
Compared with the prior art, the invention has the beneficial effects that:
1. the radio frequency interference intensity detection mode adopts a double-antenna frequency division detection mode, and the antennas with different frequencies are matched with different gain value scanning, so that interference signals with different frequencies can be received respectively.
2. According to the radio frequency interference intensity detection process, radiation intensity calculation under different gains of signals and radiation intensity after frequency and power interpolation are adopted, interference time calculation is matched through two calculation modes of the radiation intensity, comprehensiveness of radio frequency interference signal detection is effectively achieved, meanwhile, errors generated by radio frequency interference intensity detection are effectively reduced through calculation of the two radiation intensities, and accuracy of the radiation intensity detection is guaranteed.
Drawings
FIG. 1 is a view showing the whole appearance of a detecting body according to the present invention;
FIG. 2 is a schematic diagram of the internal structure of the detecting body according to the present invention;
FIG. 3 is a schematic diagram of the detection of RF interference intensity according to the present invention;
FIG. 4 is a schematic diagram of the MCU of the present invention;
FIG. 5 is a flow chart of the detection of the RF interference intensity according to the present invention;
FIG. 6 is a graph showing the variation of the low frequency antenna and the high frequency antenna at 20W for the RF signal of the present invention;
fig. 7 is a graph showing the variation of the low frequency antenna and the high frequency antenna at 5W for the rf signal of the present invention.
In the figure: the device comprises a 1-detection machine body, a 2-low frequency antenna, a 3-high frequency antenna, a 4-control key, a 5-indicator lamp, a 6-IIC interface, a 7-UART interface, an 8-liquid crystal display, a 9-MCU, a 10-ferroelectric memory and an 11-ADC signal collector.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
Referring to fig. 1-7, the present invention provides a technical solution:
the system comprises a hardware system and a detection system, wherein the hardware system comprises hardware equipment, the hardware equipment comprises a detection machine body 1, a control key 4, an indicator lamp 5, an IIC interface 6, a UART interface 7 and a liquid crystal screen 8, the control key 4, the indicator lamp 5, the IIC interface 6, the UART interface 7 and the liquid crystal screen 8 are positioned on one side of the detection machine body 1, the detection system comprises detection equipment, the detection equipment comprises a low-frequency antenna 2, a high-frequency antenna 3, an MCU9, a ferroelectric memory 10 and an ADC signal collector 11, the MCU9 is respectively connected with the ADC signal collector 11, the ferroelectric memory 10, the liquid crystal screen 8, the UART interface 7, the IIC interface 6, the indicator lamp 5 and the control key 4 through integrated wires, and the ADC signal collector 11 is respectively connected with the low-frequency antenna 2 and the high-frequency antenna 3 through wires;
the low-frequency antenna 2 and the high-frequency antenna 3 are connected to the detecting machine body 1 through a wire fixing fastener, a circuit adopted between the low-frequency antenna 2 and the high-frequency antenna 3 and the ADC signal collector 11 is a two-channel radio frequency gain scanning circuit, and the low-frequency antenna 2 and the high-frequency antenna 3 are matched with interference intensity values of signal radiation which can be received by the radio frequency gain scanning circuit under different gains;
further, the low-frequency antenna 2 is a 30MHz winding antenna, the high-frequency antenna 3 is an 800MHz PCB printed antenna, and the intensity of radio frequency radiation signals received from the periphery of the instrument in the frequency range of 3MHz-3GHz can be detected through two different frequency antennas, so that the range of receiving interference signals is effectively enlarged;
further, the MCU9 is a single chip microcomputer, the device mounting area of the main circuit of the MCU9 is welded with an interpolation control module, an RTC and a data calculation module, the interpolation controller mainly realizes interpolation of frequency and power related to radiation intensity, the RTC mainly calculates time from start to end of signal reception, a related algorithm is burnt in the data calculation module, and related calculation is performed on radiation intensity and interference time.
Further defined, the ferroelectric memory 10 stores pre-stored frequency point values of delivery, the pre-stored frequency point values of delivery are respectively 10MHz, 30MHz, 100MHz, 800MHz and 3GHz, the pre-stored frequency point values of delivery mainly play a role of reference, the acquired signals are compared with the pre-stored frequency point values of delivery, and the actual signal strength values can be obtained through calculation.
The specific flow of the radio frequency interference intensity detection method related to the radio frequency interference intensity detection system comprises the following steps:
s1, acquiring interference signals, namely scanning and receiving radio frequency interference signals with different signal intensities through a low-frequency antenna and a high-frequency antenna in cooperation with different gain values, and acquiring signals through an ADC signal acquisition device;
s2, calculating interference radiation intensity, transmitting the acquired signals to an MCU, calculating the received radiation intensity of radio frequency under two gains through a data calculation module, combining factory frequency points, and calculating the received radiation intensity of a low-frequency antenna and a high-frequency antenna through the data calculation module again;
s3, calculating the actual radiation intensity, interpolating the frequency and the power of the radiation intensity through an interpolation control module, calculating the actual intensity value of the acquired received signal by means of a data calculation module, and estimating the frequency value range of the emergent frequency signal;
s4, calculating interference time: in the whole radiation intensity calculation process, the RTC records the interference starting time and the interference ending time, and the data calculation module accumulates the time values so as to record the maximum interference value and the interference accumulation time;
s5, data storage, wherein the signal intensity value, the maximum interference value and the interference accumulation time are stored in real time through the ferroelectric memory and are displayed through the liquid crystal display.
Referring to fig. 6 and 7, the following is a comparison analysis of experimental data detected by the above manner when receiving radio frequency interference signals with different frequencies and powers:
when the actual verification is heavy and the interference is 15W, 700Mz is carried out, the data measured by the low-frequency antenna A is 510, the data measured by the high-frequency antenna B is 1395, the result is compared by a calibration reference algorithm, the frequency is between 100MHz and 800MHz, the frequency is approximately assigned 600MHz after being converted by interpolation, the weighted reference value is 823 after power interpolation calculation, the power is between about 10W and 20W, and the power is assigned to 17.3W.
Comparative example
The traditional interference signal detection mode is realized by installing an interference radiation receiving antenna and matching with a radio frequency detection circuit board, and the interference radiation receiving antenna directly transmits signals to the radio frequency detection circuit board after receiving the signals, and the signals are detected by a detection module on the circuit board.
In the mode, the nonlinearity of the antenna (the antenna cannot realize the linear gain in the range of 3MHz-3 GHz), plus the interference are near-field interference, the nonlinear difference caused by frequency and distance change due to attenuation between radiation interference and reception is very large, so that detection is limited.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The system is characterized by comprising a hardware system and a detection system, wherein the hardware system is composed of hardware equipment, the hardware equipment comprises a detection machine body (1), a control key (4), an indicator lamp (5), an IIC interface (6), a UART interface (7) and a liquid crystal screen (8), the control key (4), the indicator lamp (5), the IIC interface (6), the UART interface (7) and the liquid crystal screen (8) are positioned on one side of the detection machine body (1), the detection system is composed of detection equipment, the detection equipment comprises a low-frequency antenna (2), a high-frequency antenna (3), an MCU (9), a ferroelectric memory (10) and an ADC signal collector (11), and the MCU (9) is respectively connected with the ADC signal collector (11), the ferroelectric memory (10), the liquid crystal screen (8), the UART interface (7), the IIC interface (6), the indicator lamp (5) and the control key (4) through integrated wires, and the ADC signal collector (11) is respectively connected with the low-frequency antenna (2) and the high-frequency antenna (3) through wires;
the specific flow of the radio frequency interference intensity detection method related to the radio frequency interference intensity detection system comprises the following steps:
s1, acquiring interference signals, namely scanning and receiving radio frequency interference signals with different signal intensities through a low-frequency antenna (2) and a high-frequency antenna (3) in cooperation with different gain values, and acquiring signals through an ADC signal acquisition unit (11);
s2, calculating interference radiation intensity, transmitting acquired signals to an MCU (9), calculating received radiation intensities under two gains of radio frequency pair through a data calculation module, combining factory frequency points, and calculating the received radiation intensities of a low-frequency antenna (2) and a high-frequency antenna (3) through the data calculation module again;
s3, calculating the actual radiation intensity, interpolating the frequency and the power of the radiation intensity through an interpolation control module, calculating the actual intensity value of the acquired received signal by means of a data calculation module, and estimating the frequency value range of the emergent frequency signal;
s4, calculating interference time: in the whole radiation intensity calculation process, the RTC records the interference starting time and the interference ending time, and the data calculation module accumulates the time values so as to record the maximum interference value and the interference accumulation time;
s5, data storage, wherein the signal intensity value, the maximum interference value and the interference accumulation time are stored in real time through a ferroelectric memory (10) and are displayed through a liquid crystal display (8).
2. The radio frequency interference intensity detection system according to claim 1, wherein the low frequency antenna (2) and the high frequency antenna (3) are connected to the detection body (1) through a wire fixing fastener, and a circuit adopted between the low frequency antenna (2) and the high frequency antenna (3) and the ADC signal collector (11) is a two-channel radio frequency gain scanning circuit.
3. A radio frequency interference strength detection system according to claim 1, characterized in that the low frequency antenna (2) is a 30MHz wound antenna and the high frequency antenna (3) is an 800MHz PCB printed antenna.
4. The radio frequency interference intensity detection system according to claim 1, wherein the MCU (9) is a single chip microcomputer, and the interpolation control module, the RTC and the data calculation module are welded on the device installation area of the main circuit of the MCU (9).
5. The radio frequency interference intensity detection system according to claim 1, wherein the ferroelectric memory (10) stores pre-stored factory frequency point values, and the factory frequency point pre-stored values are respectively 10MHz, 30MHz, 100MHz, 800MHz and 3GHz.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210525084.5A CN114785436B (en) | 2022-05-14 | 2022-05-14 | Radio frequency interference intensity detection system and method |
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| CN114785436B true CN114785436B (en) | 2024-01-30 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6704557B1 (en) * | 1999-04-22 | 2004-03-09 | Lucent Technologies Inc. | System and method for protecting a receiver from jamming interference |
| CN204597978U (en) * | 2014-12-26 | 2015-08-26 | 成都杰联祺业电子有限责任公司 | A kind of interconnection type full frequency band signal shielding instrument |
| CN207560008U (en) * | 2017-12-28 | 2018-06-29 | 成都市智讯联创科技有限责任公司 | GPS and GSM interference signal direction detecting positioning systems based on detection |
| CN214041745U (en) * | 2020-12-10 | 2021-08-24 | 青岛市光电工程技术研究院 | Electromagnetic interference power detector and detection system thereof |
| CN113834995A (en) * | 2021-11-26 | 2021-12-24 | 宜宾盛纬伦科技有限公司 | Test system for simultaneously detecting electromagnetic interference at low frequency and high frequency |
| CN215871381U (en) * | 2021-03-31 | 2022-02-18 | 海能达通信股份有限公司 | Anti-interference circuit and receiver |
-
2022
- 2022-05-14 CN CN202210525084.5A patent/CN114785436B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6704557B1 (en) * | 1999-04-22 | 2004-03-09 | Lucent Technologies Inc. | System and method for protecting a receiver from jamming interference |
| CN204597978U (en) * | 2014-12-26 | 2015-08-26 | 成都杰联祺业电子有限责任公司 | A kind of interconnection type full frequency band signal shielding instrument |
| CN207560008U (en) * | 2017-12-28 | 2018-06-29 | 成都市智讯联创科技有限责任公司 | GPS and GSM interference signal direction detecting positioning systems based on detection |
| CN214041745U (en) * | 2020-12-10 | 2021-08-24 | 青岛市光电工程技术研究院 | Electromagnetic interference power detector and detection system thereof |
| CN215871381U (en) * | 2021-03-31 | 2022-02-18 | 海能达通信股份有限公司 | Anti-interference circuit and receiver |
| CN113834995A (en) * | 2021-11-26 | 2021-12-24 | 宜宾盛纬伦科技有限公司 | Test system for simultaneously detecting electromagnetic interference at low frequency and high frequency |
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