CN204305037U - A kind of ultrashort wave channel status sensing device based on energy measuring - Google Patents
A kind of ultrashort wave channel status sensing device based on energy measuring Download PDFInfo
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- CN204305037U CN204305037U CN201420773353.0U CN201420773353U CN204305037U CN 204305037 U CN204305037 U CN 204305037U CN 201420773353 U CN201420773353 U CN 201420773353U CN 204305037 U CN204305037 U CN 204305037U
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Abstract
The utility model relates to a kind of ultrashort wave channel status sensing device based on energy measuring, comprise and carry out A/D conversion, digital filtering, Fourier transform and channel parameter estimation to received signal, and adopting energy detection method to obtain the digital processing plate of fixed intervals channel state parameter, described digital circuit board is connected with receiver rf front-end, the touch screen module that shows for carrying out device operation and channel status respectively; Also comprise the power circuit of powering to described digital processing plate, receiver rf front-end, touch screen module.The utility model has that computational speed is fast, easy and simple to handle, the advantage of state intuitive display, can provide the state aware result of channel level, facilitate the frequency spectrum perception of ultra short wave communication user and channel preferred.
Description
Technical field
The utility model belongs to wireless communication technology field, particularly a kind of ultrashort wave channel status sensing device based on energy measuring.
Background technology
Ultra short wave communication is the communication mode of the radio wave transmissions information utilizing frequency between 30MHz ~ 300MHz, the main dependence propagation of ground wave and spacial sight-distance are propagated, have that communications band is wide, message capacity is large, be thus widely used in the fields such as TV, FM broadcasting, radar detection, mobile communication, military communication.Along with the growth of radio communication service, ultrashort wave frequently equipment constantly increases, thus makes radio spectrum resources become more and more rare.In ultrashort wave wireless communication system, often can run into predetermined channel occupied or there is the situation of severe jamming, causing cannot proper communication according to predetermined channel.Therefore, within the scope of working frequency range, spectrum scan is carried out to radio station, channel perception frequency spectrum state, obtain suitable communication channel significant for the normal work of wireless communication system.
Current main frequency spectrum sensing method has matching matrix, energy measuring method and circulation frequency spectrum detection method.Matching matrix needs the prior information knowing detected signal, lacks flexibility; Cyclic Spectrum detection method utilizes the spectrum correlated characteristic of signal to detect, and have good detection perform, but computation complexity is larger in low signal-to-noise ratio situation; Energy measuring method is a kind of traditional detection method, and maximum advantage is the priori without the need to knowing signal, and realizes simple, simultaneously for the problem that energy detection method is limited in one's ability to noise adaptation, can introduce cooperative detection measure and solve.All the time, spectrum monitoring equipment is all with frequency level Scanning Detction frequency spectrum state, and equipment complex structure, and operation uses inconvenience, lacks a kind of simple to operate, monitoring equipment that can provide channel level state aware result in actual applications.
Utility model content
For the deficiency that prior art exists, the technical problems to be solved in the utility model be to provide a kind of easy and simple to handle, use ultrashort wave channel status sensing device flexibly, the channel status being applicable to ultra short wave communication system monitors with channel preferred.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of ultrashort wave channel status sensing device based on energy measuring, comprise and carry out A/D conversion, digital filtering, Fourier transform and channel parameter estimation to received signal, and adopting energy detection method to obtain the digital processing plate of fixed intervals channel state parameter, described digital circuit board is connected with receiver rf front-end, the touch screen module that shows for carrying out device operation and channel status respectively; Also comprise the power circuit of powering to described digital processing plate, receiver rf front-end, touch screen module.
Described receiver rf front-end comprises the ultrashort wave reception antenna, protective circuit, preamplifier, filter circuit and the gain control circuit that connect successively.
Described digital processing plate comprises the A/D converter, FPGA module and the DSP+ARM module that connect successively.
Described FPGA module adopts Virtex-5 series high-performance FPGA.
Described DSP+ARM module selects OMAP-L138 chip.
Described touch screen module adopts TIDEP0015 module, is connected with digital processing plate by WVGA interface.
Described power circuit provides direct current supply.
The utility model has that computational speed is fast, easy and simple to handle, the advantage of state intuitive display, can provide the state aware result of channel level, facilitate the frequency spectrum perception of ultra short wave communication user and channel preferred.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present utility model.
Fig. 2 is ultrashort wave channel status perception interface of the present utility model schematic diagram.
Fig. 3 is ultrashort wave channel status sensing results interface of the present utility model schematic diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
See Fig. 1, the utility model provides a kind of ultrashort wave channel status sensing device based on energy measuring, comprise and carry out A/D conversion, digital filtering, Fourier transform and channel parameter estimation to received signal, and adopting energy detection method to obtain the digital processing plate of fixed intervals channel state parameter, digital circuit board is connected with receiver rf front-end, the touch screen module that shows for carrying out device operation and channel status respectively; Also comprise the power circuit of powering to described digital processing plate, receiver rf front-end, touch screen module.
Wherein, each functional module is specific as follows:
Receiver rf front-end; comprise the ultrashort wave reception antenna, protective circuit, preamplifier, filter circuit and the gain control circuit that connect successively; complete the amplitude limit of ultrashort wave radiofrequency signal, amplification, filtering and gain to control, signal is delivered to the A/D modular converter of digital processing plate.
Digital processing plate, comprises and connects A/D converter, FPGA module and DSP+ARM module successively, and achieve a butt joint AD conversion, digital filtering, Fourier transform and the channel parameter estimation of to collect mail number, adopts energy detection method to obtain the state parameter of fixed intervals channels; Wherein FPGA module selects the Virtex-5 series high-performance FPGA of Xilinx company, maximumly reach 660,000 logical blocks, DSP+ARM module selects the OMAP-L138 chip of TI company, and inside is integrated with ARM9 processor and C674x DSP, and maximum operating frequency is 456MHz.
Power supply provides direct current supply, input 220V (± 10V) 50Hz for whole device, exports power supply 12V(11V ~ 13V) 4A, storage battery power supply is no less than 1.5 hours.
Touch screen module comprises touch-screen and drive circuit, and for carrying out operation and the channel status display of device, touch-screen selects TIDEP0015 module, is 7 inch capacitive touch display screens, is connected by WVGA interface with digital processing plate.
It is 30MHz ~ 88MHz that ultrashort wave of the present utility model detects band limits, and channel spacing is 25kHz, the total number of channel 2320, scan channel bandwidth 100MHz, frequency resolution 1kHz; Amplitude measurement scope is-110dBm ~ 0dBm, and range accuracy is ± 1dB; Attenuator adjustable range 0 ~ 21dB, stepping 3dB.
Channel status perception interface schematic diagram shown in Figure 2, in the channel energy state and operation interface of touch-screen display, display frequency scope, range of channels, channel idle decision threshold can be changed by operation, change the displaying contents at channel monitoring interface, left side.
Channel status sensing results interface schematic diagram shown in Figure 3, interface display idle channel or busy channel on the left of touch-screen, arrange frequency range and the range of channels of screening idle channel at east side operation interface.
The utility model has that computational speed is fast, easy and simple to handle, the advantage of state intuitive display, and the channel status being applicable to ultra short wave communication system monitors with channel preferred.By the cooperative detection of multiple device, suitable communication channel can be obtained, for interconnecting of ultra short wave communication system provides important Informational support.
Claims (7)
1. the ultrashort wave channel status sensing device based on energy measuring, it is characterized in that: comprise and carry out A/D conversion, digital filtering, Fourier transform and channel parameter estimation to received signal, and adopting energy detection method to obtain the digital processing plate of fixed intervals channel state parameter, described digital circuit board is connected with receiver rf front-end, the touch screen module that shows for carrying out device operation and channel status respectively; Also comprise the power circuit of powering to described digital processing plate, receiver rf front-end, touch screen module.
2. the ultrashort wave channel status sensing device based on energy measuring according to claim 1, is characterized in that: described receiver rf front-end comprises the ultrashort wave reception antenna, protective circuit, preamplifier, filter circuit and the gain control circuit that connect successively.
3. the ultrashort wave channel status sensing device based on energy measuring according to claim 1, is characterized in that: described digital processing plate comprises the A/D converter, FPGA module and the DSP+ARM module that connect successively.
4. the ultrashort wave channel status sensing device based on energy measuring according to claim 3, is characterized in that: described FPGA module adopts Virtex-5 series high-performance FPGA.
5. the ultrashort wave channel status sensing device based on energy measuring according to claim 3, is characterized in that: described DSP+ARM module selects OMAP-L138 chip.
6. the ultrashort wave channel status sensing device based on energy measuring according to claim 1, is characterized in that: described touch screen module adopts TIDEP0015 module, is connected with digital processing plate by WVGA interface.
7. the ultrashort wave channel status sensing device based on energy measuring according to claim 1, is characterized in that: described power circuit provides direct current supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420773353.0U CN204305037U (en) | 2014-12-10 | 2014-12-10 | A kind of ultrashort wave channel status sensing device based on energy measuring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420773353.0U CN204305037U (en) | 2014-12-10 | 2014-12-10 | A kind of ultrashort wave channel status sensing device based on energy measuring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204305037U true CN204305037U (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420773353.0U Expired - Fee Related CN204305037U (en) | 2014-12-10 | 2014-12-10 | A kind of ultrashort wave channel status sensing device based on energy measuring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104853370A (en) * | 2015-05-29 | 2015-08-19 | 深圳市富斯遥控模型技术有限公司 | Spectrum sensing method based on model remote control and system thereof |
-
2014
- 2014-12-10 CN CN201420773353.0U patent/CN204305037U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104853370A (en) * | 2015-05-29 | 2015-08-19 | 深圳市富斯遥控模型技术有限公司 | Spectrum sensing method based on model remote control and system thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20151210 |
|
| EXPY | Termination of patent right or utility model |