CN204376922U - Parallel duplex FM modulated broadcast signal acquisition and processing device - Google Patents
Parallel duplex FM modulated broadcast signal acquisition and processing device Download PDFInfo
- Publication number
- CN204376922U CN204376922U CN201520101418.1U CN201520101418U CN204376922U CN 204376922 U CN204376922 U CN 204376922U CN 201520101418 U CN201520101418 U CN 201520101418U CN 204376922 U CN204376922 U CN 204376922U
- Authority
- CN
- China
- Prior art keywords
- broadcast signal
- modulated broadcast
- parallel
- signal
- unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Traffic Control Systems (AREA)
- Transmitters (AREA)
Abstract
The utility model discloses parallel duplex FM modulated broadcast signal acquisition and processing device.This device comprises reception FM modulated broadcast signal and is treated to the radiofrequency signal processing unit of multi-channel rf signal; The Bing Duimei road radiofrequency signal be connected with radiofrequency signal processing unit output carries out the parallel FM modulated broadcast signal demodulating unit of parallel processing; That be connected with parallel FM modulated broadcast signal demodulating unit output and the every road simulated audio signal exported is converted to the parallel FM modulated broadcast signal collecting unit of standard digital audio frequency signal; The FM modulated broadcast signal process be connected with parallel FM modulated broadcast signal collecting unit, storage and transmission unit.The utility model can realize Real-time Collection and analyzing and processing to parallel duplex FM modulated broadcast signal, makes full use of the monitoring that FPGA performance completes parallel duplex FM modulated broadcast signal, can complete evidence obtaining work in real time to illegal broadcasting station simultaneously.
Description
Technical field
The utility model relates to parallel duplex FM modulated broadcast signal acquisition and processing device, belongs to Signal acquiring and processing field.
Background technology
Existing FM modulated broadcast signal harvester is generally the collection for simulation FM modulation signal, by FM demodulating unit, carries out Real-time demodulation to FM signal; Then analog audio data is sent into modulus switching device, realize simulated audio signal and convert digital audio and video signals to; Finally send into a series of digitized processing such as CPU is carried out processing, transmitted, storage.But General System can only realize the acquisition and processing of serial multichannel FM modulated broadcast signal, multichannel FM modulated broadcast signal parallel acquisition and process cannot be realized, thus cannot supervise illegal broadcasting station real-time and efficiently.
Utility model content
The purpose of this utility model is to provide parallel duplex FM modulated broadcast signal acquisition and processing device, the acquisition and processing system solving existing FM modulated broadcast signal can not realize parallel acquisition and process, thus cannot real-time and efficiently to the problem that illegal broadcasting station is supervised.
To achieve these goals, the technical solution adopted in the utility model is as follows:
Parallel duplex FM modulated broadcast signal acquisition and processing device, comprises and receives FM modulated broadcast signal and the radiofrequency signal processing unit being treated to multi-channel rf signal; The Bing Duimei road radiofrequency signal be connected with radiofrequency signal processing unit output carries out the parallel FM modulated broadcast signal demodulating unit of parallel processing; That be connected with parallel FM modulated broadcast signal demodulating unit output and the every road simulated audio signal exported is converted to the parallel FM modulated broadcast signal collecting unit of standard digital audio frequency signal; The FM modulated broadcast signal process be connected with parallel FM modulated broadcast signal collecting unit, storage and transmission unit.
Particularly, described radiofrequency signal processing unit comprises the RF gain controller receiving FM modulated broadcast signal, the power splitter be connected with RF gain controller; Described parallel FM modulated broadcast signal demodulating unit comprises the FM demodulating unit be connected with each output of power splitter; Described parallel FM modulated broadcast signal collecting unit comprises the data acquisition module be connected with each FM demodulating unit output; The process of described FM modulated broadcast signal, storage and transmission unit comprise the central processing unit be simultaneously connected with data acquisition module, the memory connect with central processing unit and procotol chip, and the electromagnetic isolation device be connected with procotol chip.
Further, described central processing unit adopts CPLD FPGA, and described memory adopts two panels SRAM, and be connected with FPGA by control bus, procotol chip is connected with the FSMC interface of FPGA.
Again further, described FPGA is also connected with RF gain controller, sends instruction adjustment RF gain controller parameter, ensures to capture real illegal broadcast station signal; Described FPGA is also connected with data acquisition module with each FM demodulating unit.
In addition, described power splitter adopts 8 road power splitters, and correspondingly, parallel FM modulated broadcast signal demodulating unit and parallel FM modulated broadcast signal collecting unit will carry out parallel processing to 8 road signals.
The course of work of the present utility model is as follows:
First, by radiofrequency signal processing unit, preliminary treatment is carried out to aerial radio wave signal (FM modulated broadcast signal); Then, the radiofrequency signal after complete to preliminary treatment enters 8 roads and to walk abreast FM demodulating unit, completes the signal capture of FM, signal down-conversion and FM demodulating algorithm, exports the simulated audio signal after demodulation; Secondly, enter parallel FM modulated broadcast signal collecting unit, digital processing is carried out to simulated audio signal, simulated audio signal is become standard digital audio frequency signal; Finally, the process of FFM modulated broadcast signal, storage and transmission unit complete voice signal identification, signal transacting, signal storage and signal transfer functions.
Compared with prior art, the utility model has following beneficial effect:
(1) the utility model can realize Real-time Collection and analyzing and processing to multichannel FM modulated broadcast signal, CPLD (FPGA) is adopted to form a multichannel FM modulated broadcast signal Real-time Collection and analysis and processing unit, make full use of the monitoring that FPGA performance completes multichannel FM modulated broadcast signal, evidence obtaining work can be completed to illegal broadcasting station in real time simultaneously.
(2) central processing unit of the present utility model adopts CPLD (FPGA), this FPGA also can send instruction adjustment RF gain controller parameter, the signal attenuation that compensating circuit link brings, guarantee captures real illegal broadcast station signal, and can control FM demodulating unit and data acquisition module, control flexibly.
(3) the utility model is all parallel processing to the process of signal, greatly improves and to obtain evidence in an unlawful way operating efficiency to broadcast band supervisory efficiency and fast finding pirate radio and raising.
Accompanying drawing explanation
Fig. 1 is the system block diagram of the utility model-embodiment.
Embodiment
Below in conjunction with embodiment and accompanying drawing thereof, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Embodiment
As shown in Figure 1, parallel duplex FM modulated broadcast signal acquisition and processing device, comprise and receive FM modulated broadcast signal and the radiofrequency signal processing unit being treated to multi-channel rf signal, the Bing Duimei road radiofrequency signal be connected with radiofrequency signal processing unit output carries out the parallel FM modulated broadcast signal demodulating unit of parallel processing, that be connected with parallel FM modulated broadcast signal demodulating unit output and the every road simulated audio signal exported is converted to the parallel FM modulated broadcast signal collecting unit of standard digital audio frequency signal, the FM modulated broadcast signal process be connected with parallel FM modulated broadcast signal collecting unit, store and transmission unit.
In the present embodiment, described radiofrequency signal processing unit comprises RF gain controller, the power splitter be connected with RF gain controller; Described parallel FM modulated broadcast signal demodulating unit comprises the FM demodulating unit be connected with each output of power splitter, and this FM demodulating unit has multiple, eachly processes a road radiofrequency signal; Described parallel FM modulated broadcast signal collecting unit comprises the data acquisition module be connected with each FM demodulating unit output, and this data acquisition module has multiple, eachly processes a road simulated audio signal; The process of described FM modulated broadcast signal, storage and transmission unit comprise the central processing unit be simultaneously connected with data acquisition module, the memory connect with central processing unit and procotol chip, and the electromagnetic isolation device to be connected with procotol chip, described central processing unit CPLD (FPGA), memory adopts two panels SRAM, be connected with FPGA by control bus, procotol chip is connected with the FSMC interface of FPGA.
In the present embodiment, FPGA is also connected with RF gain controller, sends instruction adjustment RF gain controller parameter, ensures to capture real illegal broadcast station signal.In addition, FPGA is also connected with data acquisition module with each FM demodulating unit.Power splitter adopts 8 road power splitters, and correspondingly, parallel FM modulated broadcast signal demodulating unit and parallel FM modulated broadcast signal collecting unit will carry out parallel processing to 8 road signals.Certainly on the basis of the present embodiment, also 8 road power splitters can be expanded to 16 tunnels, correspondingly adjust the number of FM demodulating unit and data acquisition module, realize the parallel processing of multiple signals.
The course of work of the present utility model is as follows:
Radiofrequency signal processing unit: the power receiving FM modulated broadcast signal with RF gain controller adjustment, ensure that processing unit below can process this signal, saturated and the data from overflow of signal can not be caused, and avoid the too weak and too little phenomenon cannot catching illegal broadcast station signal of data of signal.With 8 road power splitters, 1 tunnel radiofrequency signal is divided into 8 tunnel radiofrequency signals.Decay about 3dB is generally there will be by power splitter, central processing unit is needed to send instruction adjustment RF gain controller parameter, the signal attenuation that compensating circuit link brings, ensures to capture real illegal broadcast station signal, realizes monitoring and the management of radio electromagnetsm environment.
Parallel FM modulated broadcast signal demodulating unit: detection, tuning, matched filtering are realized to radio wave in air signal (FM modulated broadcast signal) at radiofrequency signal processing unit, interested radio wave signal is caught and after being treated to multi-channel rf signal, radio frequency signal carries out repeatedly mixing, filtering, is processed into base band I/Q signal; Then FM demodulation is carried out by FM demodulating algorithm module, complete useful signal leaching process, above-mentioned operation is all 8 road signal parallel process, greatly can improve like this and obtain evidence in an unlawful way operating efficiency to broadcast band supervisory efficiency and fast finding pirate radio and raising.
Parallel FM modulated broadcast signal collecting unit: because last parallel FM modulated broadcast signal demodulating unit exports simulated audio signal, cannot send in CPLD (FPGA) and carry out voice signal identification.So, need the data acquisition module that design 8 tunnel is parallel.This data acquisition module mainly becomes standard digital audio frequency signal simulated audio signal acquisition process, comprises pcm audio data format and standard audio speed.
The process of FM modulated broadcast signal, storage and transmission unit: the accurate digital audio and video signals of 8 road sign is sent in FPGA, realizes the functions such as speech recognition at FPGA, identify frequency and the frequency range of pirate radio; And the illegal contents that pirate radio is launched, record and be stored in memory, memory adopts two panels SRAM, realizes ping-pong operation, realizes the uninterrupted monitoring of continuous 8 road signals; FPGA realizes reporting and evidence obtaining work of pirate radio at a high speed by FSMC high-speed interface.
According to above-described embodiment; just can realize the utility model preferably; under prerequisite based on said structure design; for solving same technical problem; even if some making on the utility model are without substantial change or polishing; the essence of the technical scheme adopted is still the same with the utility model, therefore it also should in protection range of the present utility model.
Claims (5)
1. parallel duplex FM modulated broadcast signal acquisition and processing device, is characterized in that, comprises and receives FM modulated broadcast signal and the radiofrequency signal processing unit being treated to multi-channel rf signal; The Bing Duimei road radiofrequency signal be connected with radiofrequency signal processing unit output carries out the parallel FM modulated broadcast signal demodulating unit of parallel processing; That be connected with parallel FM modulated broadcast signal demodulating unit output and the every road simulated audio signal exported is converted to the parallel FM modulated broadcast signal collecting unit of standard digital audio frequency signal; The FM modulated broadcast signal process be connected with parallel FM modulated broadcast signal collecting unit, storage and transmission unit.
2. parallel duplex FM modulated broadcast signal acquisition and processing device according to claim 1, is characterized in that, described radiofrequency signal processing unit comprises the RF gain controller receiving FM modulated broadcast signal, the power splitter be connected with RF gain controller; Described parallel FM modulated broadcast signal demodulating unit comprises the FM demodulating unit be connected with each output of power splitter; Described parallel FM modulated broadcast signal collecting unit comprises the data acquisition module be connected with each FM demodulating unit output; The process of described FM modulated broadcast signal, storage and transmission unit comprise the central processing unit be simultaneously connected with data acquisition module, the memory connect with central processing unit and procotol chip, and the electromagnetic isolation device be connected with procotol chip.
3. parallel duplex FM modulated broadcast signal acquisition and processing device according to claim 2, is characterized in that, described central processing unit adopts CPLD FPGA, and described memory adopts two panels SRAM.
4. parallel duplex FM modulated broadcast signal acquisition and processing device according to claim 3, it is characterized in that, described FPGA is also connected with RF gain controller, and described FPGA is also connected with data acquisition module with each FM demodulating unit.
5. parallel duplex FM modulated broadcast signal acquisition and processing device according to claim 4, it is characterized in that, described power splitter adopts 8 road power splitters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520101418.1U CN204376922U (en) | 2015-02-12 | 2015-02-12 | Parallel duplex FM modulated broadcast signal acquisition and processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520101418.1U CN204376922U (en) | 2015-02-12 | 2015-02-12 | Parallel duplex FM modulated broadcast signal acquisition and processing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204376922U true CN204376922U (en) | 2015-06-03 |
Family
ID=53333098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520101418.1U Active CN204376922U (en) | 2015-02-12 | 2015-02-12 | Parallel duplex FM modulated broadcast signal acquisition and processing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204376922U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105577303A (en) * | 2015-12-16 | 2016-05-11 | 山东大学 | Illegal frequency space-time discrimination apparatus and method |
| CN105871482A (en) * | 2016-05-27 | 2016-08-17 | 西华大学 | Monitoring method for frequency modulation broadcast signals |
| CN106877955A (en) * | 2017-03-29 | 2017-06-20 | 西华大学 | Method for recognizing time telling characteristics of frequency modulation broadcast signal based on hidden Markov model |
| WO2017143641A1 (en) * | 2016-02-25 | 2017-08-31 | 邦彦技术股份有限公司 | Fpga-based device for implementing pcm audio playback, system, and method |
| CN109245841A (en) * | 2018-08-03 | 2019-01-18 | 天维讯达（北京）科技有限公司 | A kind of multichannel FM broadcasting audio information acquisition device, method and system |
| CN109756285A (en) * | 2019-01-29 | 2019-05-14 | 云南大学 | Unauthorized broadcast singal monitoring device and monitoring method based on audio acoustic feature |
-
2015
- 2015-02-12 CN CN201520101418.1U patent/CN204376922U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105577303A (en) * | 2015-12-16 | 2016-05-11 | 山东大学 | Illegal frequency space-time discrimination apparatus and method |
| CN105577303B (en) * | 2015-12-16 | 2018-10-23 | 山东大学 | A kind of apparatus and method that illegal frequency space-time is screened |
| WO2017143641A1 (en) * | 2016-02-25 | 2017-08-31 | 邦彦技术股份有限公司 | Fpga-based device for implementing pcm audio playback, system, and method |
| CN105871482A (en) * | 2016-05-27 | 2016-08-17 | 西华大学 | Monitoring method for frequency modulation broadcast signals |
| CN105871482B (en) * | 2016-05-27 | 2018-08-17 | 西华大学 | A kind of monitoring method of fm broadcast signal |
| CN106877955A (en) * | 2017-03-29 | 2017-06-20 | 西华大学 | Method for recognizing time telling characteristics of frequency modulation broadcast signal based on hidden Markov model |
| CN109245841A (en) * | 2018-08-03 | 2019-01-18 | 天维讯达（北京）科技有限公司 | A kind of multichannel FM broadcasting audio information acquisition device, method and system |
| CN109756285A (en) * | 2019-01-29 | 2019-05-14 | 云南大学 | Unauthorized broadcast singal monitoring device and monitoring method based on audio acoustic feature |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204376922U (en) | Parallel duplex FM modulated broadcast signal acquisition and processing device | |
| CN110927537B (en) | Partial discharge monitoring device and method based on Internet of things edge calculation | |
| CN205029765U (en) | Unmanned aerial vehicle patrols real -time passback system of line high definition video based on relaying | |
| CN206236263U (en) | A kind of drainage pipeline networks monitoring system based on big data | |
| CN202856745U (en) | Railway mobile communication interference real time monitor | |
| CN106908785A (en) | Radar network based on cloud computing | |
| CN205092976U (en) | A data audiomonitor and data analysis system for UWB positioning system | |
| CN204376919U (en) | Parallel duplex UHF/VHF Signal sampling and processing device | |
| CN203643599U (en) | Secondary radar high- and intermediate-frequency digital receiver | |
| CN103731220A (en) | Radio detection receiving system and method based on ARM technique | |
| CN203423805U (en) | Lte signal identification device | |
| CN203722645U (en) | Radio monitoring receiving system based on ARM technology | |
| CN206674203U (en) | A kind of enhanced WiFi wireless signal acquirings device | |
| CN204216906U (en) | Portable railway disturbed test device | |
| CN207706424U (en) | A kind of directional audio signal detection device based on FFT | |
| CN202799091U (en) | Signal processing circuit of very high frequency aeronautical communication land radio station terminal module | |
| CN206835107U (en) | Emergent broadcast terminal with GPRS module | |
| CN102904657B (en) | Frequency modulation broadcast listening monitoring receiver | |
| CN203299387U (en) | Beidou anti-interference equipment with anti-interference switching switch | |
| CN206164800U (en) | Novel monitoring headpone | |
| CN205986832U (en) | Count and pass power amplifier device | |
| CN204790423U (en) | Multichannel shortwave / ultrashort wave signal processing system based on FPGA | |
| CN215581191U (en) | Wireless private network electromagnetic interference monitoring device based on artificial intelligence | |
| CN105375966B (en) | System and method are verified based on the digital bea mforming that array signal receives | |
| CN208110046U (en) | A kind of time service monitoring receiver |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |