A signal detection suppressor
By using a wireless communication chip and power amplifier based on long-range radio technology, the problem of suppressing illegal signals of LoRa spread spectrum communication technology in existing technologies has been solved, achieving accurate detection and suppression of LoRa and FSK signals.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAANXI KEHUI ELECTRONICS CO LTD
- Filing Date
- 2024-11-22
- Publication Date
- 2026-05-26
AI Technical Summary
Existing radio signal jammers are unable to effectively suppress illegal signals from LoRa spread spectrum communication technology, resulting in high concealment and strong anti-interference capabilities.
It employs wireless communication chips based on long-range radio technology, including LoRa chips, to detect and suppress illegal LoRa and FSK signals, combined with a power amplifier and human-machine interface display for precise monitoring and suppression.
It achieves accurate detection and effective suppression of illegal LoRa and FSK signals, improving the performance of the signal detection suppressor.
Smart Images
Figure CN224289807U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of signal detection technology, and more specifically, to a signal detection suppressor. Background Technology
[0002] Current jamming devices use noise or random digital signals to cover or drown out illegal signals, reducing the signal-to-noise ratio of the target receiver and making it difficult for the receiver to detect useful signals or causing errors. However, in recent years, cheating methods using LoRa (Long Range Radio) spread spectrum communication technology have become popular. This communication technology is characterized by high concealment and strong anti-interference capabilities, making it difficult for conventional radio signal jammers to effectively suppress it. Utility Model Content
[0003] To address the aforementioned problems, the purpose of this utility model embodiment is to provide a signal detection suppressor method and apparatus.
[0004] In a first aspect, this utility model provides a USB-to-serial port module, a human-machine interface display screen, a microcontroller, a power supply, a long-range radio transmitting module, a long-range radio receiving module, and a power amplifier; the USB-to-serial port module is used to connect to a host computer; the human-machine interface display screen is used for human-machine interaction; the microcontroller is used to handle data processing of the signal detection suppressor; the power supply is used to power the various modules of the signal detection suppressor; both the long-range radio transmitting module and the long-range radio receiving module include a wireless communication chip based on long-range radio technology; the long-range radio transmitting module is used to suppress illegal signals; the long-range radio receiving module is used to monitor illegal signals; and the power amplifier is used to amplify the input signal.
[0005] Optionally, illegal signals include: frequency shift keying illegal signals or long-distance radio illegal signals.
[0006] Optionally, both the long-range radio transmitting module and the long-range radio receiving module include multiple wireless communication chips based on long-range radio technology.
[0007] Optionally, the long-range radio transmitting module includes two of the aforementioned wireless communication chips based on long-range radio technology; the long-range radio receiving module includes 16 of the aforementioned wireless communication chips based on long-range radio technology.
[0008] Optionally, the signal detection suppressor further includes: a power divider and a power combiner; multiple wireless communication chips based on long-distance radio technology in the long-distance radio transmitting module share the power amplifier through the power combiner; multiple wireless communication chips based on long-distance radio technology in the long-distance radio receiving module share a receiving antenna through the power divider.
[0009] Optionally, the human-machine interface display screen includes: a display module, a setting module, and a control module; the display module is used to display the device status of the signal detection suppressor; the setting module is at least used to set the frequency and bandwidth of the listening channel of the long-distance radio receiving module; the control module is at least used to control the frequency and bandwidth of the suppressing channel of the long-distance radio transmitting module.
[0010] Optionally, the signal detection suppressor further includes a core board; the core board is used to execute an extended mode.
[0011] In the above-described solution of this utility model embodiment, a dedicated wireless communication chip based on long-distance radio technology is used, which can detect illegal signals more accurately and has a good suppression effect on illegal signals.
[0012] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 A schematic diagram of a signal detection suppressor provided in an embodiment of the present invention is shown;
[0015] Figure 2 A schematic diagram illustrating the working process of the signal detection suppressor provided in this embodiment of the present invention is shown.
[0016] icon:
[0017] 1-USB to serial port module, 2-HMI display screen, 3-Microcontroller, 4-Power supply, 5-Long-distance radio transmitter module, 6-Long-distance radio receiver module, 7-Power amplifier, 8-Core board. Detailed Implementation
[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0021] This utility model embodiment provides a signal detection suppressor, such as Figure 1 As shown, the signal detection suppressor includes: a USB to serial port module 1, a human-machine interface display screen 2, a microcontroller 3, a power supply 4, a long-distance radio transmitting module 5, a long-distance radio receiving module 6, and a power amplifier 7.
[0022] Among them, the USB to serial port module 1 is used to connect to an external host computer, which can be, for example, Figure 1The PC (personal computer) shown is used for human-computer interaction via serial port commands. It can receive the initialization printouts of the signal detection suppressor device, set the frequency, bandwidth, and spreading factor of the listening channel of the long-range radio receiving module 6, manually control the frequency, bandwidth, and spreading factor of the suppression channel of the long-range radio transmitting module 5, and command the device to perform self-tests, etc. Secondly, the human-machine interface display screen 2 can also be used for human-computer interaction; this display screen 2 is an HMI (Human Machine Interface) display screen. The microcontroller 3 is responsible for data processing of the signal detection suppressor; that is, the microcontroller 3 can further process the data generated by the human-machine interface display screen 2, the long-range radio transmitting module 5, the long-range radio receiving module 6, and the power amplifier 7. The power supply 4 supplies power to the various modules of the signal detection suppressor. Furthermore, the long-range radio transmitting module 5 is a LoRa (Long Range Radio) transmitting module, and the long-range radio receiving module 6 is a LoRa receiving module. In this embodiment of the invention, both the long-range radio transmitting module 5 and the long-range radio receiving module 6 include a wireless communication chip based on long-range radio technology. It can be understood that both the long-range radio transmitting module 5 and the long-range radio receiving module 6 include a LoRa chip. The long-range radio transmitting module 5 is used to suppress illegal signals; the long-range radio receiving module 6 is used to monitor illegal signals. Furthermore, the power amplifier 7 is used to amplify the input signal, that is, the power amplifier 7 can amplify the suppressed signal input to the long-range radio transmitting module 5.
[0023] The signal detection suppressor provided by this utility model uses a dedicated wireless communication chip based on long-distance radio technology to detect illegal signals with relatively high accuracy and has a good suppression effect on illegal signals.
[0024] Optionally, illegal signals include: frequency-shift keying (FSK) illegal signals or long-range radio illegal signals. It can be understood that frequency-shift keying illegal signals are FSK (Frequency-shift keying) illegal signals, and long-range radio illegal signals are LoRa (Long Range Radio) illegal signals. This embodiment of the invention is based on a dedicated LoRa chip, which can accurately detect LoRa and FSK illegal signals, and has a good suppression effect on illegal signals that also use LoRa spread spectrum communication technology or FSK.
[0025] Optionally, both the long-range radio transmitting module 5 and the long-range radio receiving module 6 include multiple wireless communication chips based on long-range radio technology. That is, the long-range radio receiving module 6 includes multiple wireless communication chips based on long-range radio technology (i.e., multiple LoRa chips), enabling this embodiment to simultaneously monitor multiple channels (e.g., one chip monitors one channel). Correspondingly, the long-range radio transmitting module 5 includes multiple wireless communication chips based on long-range radio technology (i.e., multiple LoRa chips), enabling this embodiment to simultaneously suppress multiple illegal signals from multiple channels (e.g., one chip monitors one channel).
[0026] Optionally, the long-range radio transmitting module 5 includes two wireless communication chips based on long-range radio technology. That is, in this embodiment, the LoRa transmitting module may include two LoRa chips, thereby enabling simultaneous suppression of FSK or LoRa illegal signals on two channels. Correspondingly, the long-range radio receiving module 6 includes 16 wireless communication chips based on long-range radio technology. That is, in this embodiment, the LoRa receiving module may include 16 LoRa chips, thereby enabling simultaneous monitoring of FSK or LoRa illegal signals on 16 channels.
[0027] Optionally, the signal detection suppressor may further include a power divider and a power combiner. Multiple wireless communication chips based on long-range radio technology in the long-range radio transmitting module 5 share a power amplifier 7 via the power combiner. For example, two LoRa chips in the LoRa transmitting module can share one power amplifier 7 via the power combiner. Multiple wireless communication chips based on long-range radio technology in the long-range radio receiving module 6 share a single receiving antenna via the power divider. For example, 16 LoRa chips in the LoRa receiving module can share a single signal receiving antenna via the power divider.
[0028] Optionally, the human-machine interface display screen 2 includes a display module, a setting module, and a control module. The display module can be used to display the device status of the signal detection suppressor, for example, displaying the signal strength of the current 16 monitoring channels. The setting module is at least used to set the frequency and bandwidth of the monitoring channels of the long-distance radio receiving module 6; for example, it can set the frequency and bandwidth of at least the 16 monitoring channels of the LoRa receiving module. The control module is at least used to control the frequency and bandwidth of the suppression channels of the long-distance radio transmitting module 5. For example, it can control the frequency and bandwidth of at least the suppression channels of the LoRa transmitting module 2.
[0029] Optionally, the signal detection suppressor may further include a core board 8. The core board 8 is used to execute the extended mode. In this embodiment, the core board 8 may be an RK3588 core board, meaning that the extended mode requires connection to the RK3588 core board. In this mode, the entire signal detection suppressor system is controlled by the RK3588 core board. The RK3588 core board needs to be connected to a router via Ethernet cable or Wi-Fi. The PC can access the RK3588 core board via the network, and systems with extended mode enabled can also access each other via the network. Specifically, when an illegal signal is detected, the entire signal detection suppressor system reads the chip parameters of the detected illegal signal and calculates parameters such as the frequency of the illegal signal based on the read signal strength. Online operation can be achieved through the RK3588 network port connection to the host computer.
[0030] The operation of this signal detection suppressor will be described in detail below with reference to an example.
[0031] Example:
[0032] To accurately detect illegal LoRa or FSK signals, this invention employs an automatic detection and suppression mode. The flowchart for this mode is as follows: Figure 2 As shown. After enabling the automatic detection and suppression mode, the long-range radio receiver module 6 first loads the parameters of the 16 preset channels, and then continuously monitors the channel signals. When the long-range radio receiver module 6 detects the presence of LoRa or FSK signals, it sends a receive interrupt to the microcontroller 3. After receiving the first interrupt, it delays for 20ms, waiting for all receiver chips to send interrupts. After the 20ms delay, it begins to read the parameters of all receiver chips that have sent receive interrupts. Based on the read parameters, it calculates the parameters of the illegal LoRa or FSK signals. Then, it closes the receive channel and begins to send suppression signals to the power amplifier through the long-range radio transmitter module 5, thereby suppressing the illegal signals.
[0033] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A signal detection suppressor, characterized in that, include: USB to serial port module (1), human-machine interface display screen (2), microcontroller (3), power supply (4), long-distance radio transmitter module (5), long-distance radio receiver module (6) and power amplifier (7); The USB-to-serial module (1) is used to connect to an external host computer; the human-machine interface display screen (2) is used for human-machine interaction; the microcontroller (3) is used to handle the data processing of the signal detection suppressor; the power supply (4) is used to power each module of the signal detection suppressor; the long-distance radio transmitting module (5) and the long-distance radio receiving module (6) both contain wireless communication chips based on long-distance radio technology; the long-distance radio transmitting module (5) is used to suppress illegal signals; the long-distance radio receiving module (6) is used to monitor illegal signals; and the power amplifier (7) is used to amplify the input signal.
2. The signal detection suppressor according to claim 1, characterized in that, The illegal signals include: frequency shift keying illegal signals or long-distance radio illegal signals.
3. The signal detection suppressor according to claim 1, characterized in that, Both the long-distance radio transmitting module (5) and the long-distance radio receiving module (6) contain multiple wireless communication chips based on long-distance radio technology.
4. The signal detection suppressor according to claim 3, characterized in that, The long-distance radio transmitting module (5) includes two wireless communication chips based on long-distance radio technology; the long-distance radio receiving module (6) includes sixteen wireless communication chips based on long-distance radio technology.
5. The signal detection suppressor according to claim 3, characterized in that, Also includes: Power divider and power combiner; The multiple wireless communication chips based on long-distance radio technology in the long-distance radio transmission module (5) share the power amplifier (7) through the power combiner; The multiple wireless communication chips based on long-distance radio technology in the long-distance radio receiving module (6) share a single receiving antenna through the power divider.
6. The signal detection suppressor according to claim 1, characterized in that, The human-machine interface display screen (2) includes: a display module, a setting module, and a control module; The display module is used to display the device status of the signal detection suppressor; the setting module is at least used to set the frequency and bandwidth of the listening channel of the long-distance radio receiving module (6); the control module is at least used to control the frequency and bandwidth of the suppressing channel of the long-distance radio transmitting module (5).
7. The signal detection suppressor according to claim 1, characterized in that, Also includes: Core board (8); the core board (8) is used to execute extended mode.