CN102752003A - Portable sweep-frequency all-band receiver - Google Patents
Portable sweep-frequency all-band receiver Download PDFInfo
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- CN102752003A CN102752003A CN2012102611890A CN201210261189A CN102752003A CN 102752003 A CN102752003 A CN 102752003A CN 2012102611890 A CN2012102611890 A CN 2012102611890A CN 201210261189 A CN201210261189 A CN 201210261189A CN 102752003 A CN102752003 A CN 102752003A
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Abstract
The invention relates to a portable sweep-frequency all-band receiver which is small, light, convenient and flexible. The sweep-frequency all-section receiver comprises a casing, a built-in frequency sweeper and an all-band receiver are arranged in the casing, a display is arranged on the surface of the casing, a display circuit board is arranged at the back of the display, the display circuit board is respectively connected with output ends of the built-in frequency sweeper and the all-band receiver, and the built-in frequency sweeper and the all-band receiver are further connected with a power supply.
Description
Technical field
The present invention relates to a kind of receiver, specifically is the full section of a kind of portable frequency sweep receiver, can be applicable to dig up mine, the microwave communication of petroleum chemical industry and safety protection field etc.
Background technology
In electronic measurements, often run into the problem that the impedance operator and the transmission characteristic of network are measured, wherein transmission characteristic comprises gain and attenuation characteristic, amplitude-frequency characteristic, phase-frequency characteristic etc.The instrument that is used for measuring afore-mentioned characteristics is called frequency-characteristic measuring-testing instrument, is called for short sweep generator.It is the adjustment of tested network, and calibration and troubleshooting of faults provide great convenience.
Sweep generator generally partly is made up of scanning saw-toothed wave generator, swept signal generator, wide-band amplifier, frequency standard signal generator, the amplification of X axle, the amplification of Y axle, display device, panel and keypad and multiple-output electric power etc.Its groundwork process is to send into the scanning saw-toothed wave generator through power transformer after with the step-down of 50Hz civil power; Just formed sawtooth waveforms; This sawtooth waveforms is controlled swept signal generator on the one hand, and swept-frequency signal is carried out frequency modulation, after this sawtooth waveforms is delivered to the amplification of X axle deflection amplifier on the other hand; Remove to control oscilloscope X axle deflector, make electron beam produce horizontal sweep.Because controlling electron beam horizontal sweep simultaneously of this sawtooth waveforms and sweep frequency oscillator, so electron beam each horizontal level on the oscilloscope tube phosphor screen is corresponding to a certain instantaneous frequency.Frequency increases gradually from left to right, and is linear change.The swept-frequency signal that swept signal generator produces is sent into attenuator after delivering to the wide-band amplifier amplification, exports swept-frequency signal then to circuit-under-test.In order to eliminate the parasitic amplitude modulation of swept-frequency signal, wide-band amplifier has been set up automatic gain controller (AGC).The swept-frequency signal of wide-band amplifier output is delivered to the frequency marking frequency mixer, in the frequency marking frequency mixer with 1MHz, 10MHz or 50MHz crystal oscillator signal or outside frequency standard signal carry out mixing.The frequency standard signal that produces is sent into the Y-plate of exporting to oscilloscope tube after Y axle deflection amplifier amplifies.Swept-frequency signal through delivering to the Y-plate of oscilloscope tube after Y shaft potential device, attenuator, the amplifier amplification, gets the amplitude-versus-frequency curve of circuit-under-test through behind the circuit-under-test.
Receiver then is a kind of destination end that works in communication link, receives signal and handles or change the local equipment that uses that supplies.
In recent years; Along with the further of production safety management goed deep into, comprise that the security assurance requirements of underground work is increasingly high, therefore; Need a kind of full section of the frequency sweep receiver that can in the high-risk environment in down-hole, realize wireless image, audio frequency receiving function, thereby the monitoring ambient conditions are so that take measures.But existing sweep generator volume is bigger, can't be combined as a whole with receiver, and subsurface environment is abominable simultaneously, and existing sweep generator also can't adapt to.
Summary of the invention
It is little that technical problem to be solved by this invention provides a kind of volume, in light weight, the full section of convenient, flexible portable frequency sweep receiver.
The present invention relates to the full section of a kind of portable frequency sweep receiver; Comprise shell; Be provided with built-in sweep generator and full section receiver in the enclosure, be provided with a display in case surface, the display back side is provided with the display circuit plate; This display circuit plate is connected with the output of built-in sweep generator and full section receiver respectively, and built-in sweep generator and full section receiver also are connected with power supply.
As improvement, said built-in sweep generator is the DDS sweep generator.The feasible test for amplitude-frequency characteristic of the appearance of DDS technology becomes unusual simple.Only need constantly dispose " frequency code K " according to certain rule, just can access the signal that a frequency is swept in the certain frequency scope according to this rule in time.In functional test procedures; Computer is delivered to SCM system to the test vector that generates in advance; The Single-chip Controlling channel plate converts signal level into test required level; And the conversion after timing waveform be applied on the input pin of device under test (DUT), so can carry out quick, qualitative or quantitative dynamic test to DUT.Therefore, adjustment, calibration and the fault eliminating to DUT provides great facility.
Further, said power supply comprises power panel and the battery that is attached thereto, and said power panel is connected with built-in sweep generator and full section receiver.This battery is the external replaceable battery, the convenient use.
Further, be provided with explosion-proof glass cover, to adapt to the application of high-risk environment in the down-hole in the display front.
Beneficial effect of the present invention:
The present invention combines embedded sweep generator and receiver, and the wireless image, the audio frequency that can be applicable under the high-risk environment receive, thereby the monitoring ambient conditions are so that take measures.Implosion guard is adopted in the display part, the embedded sweep generator of housing, and novel receiver, and the receiver external interface can connect a plurality of videos, audio frequency apparatus.Can carry out message transmission effectively, make control centre understand the underground work situation in real time, and give command scheduling.
This equipment is lighted put more energy into test, introducing device leakage test, popular drama of propagation of explosion test, introducing device through mechanical verification, humid test, insulative dielectric strength test, protection test, withstand voltage test, inside and is become the detection of testing, and all meets the regulation of above standard.Can be widely used in industries such as oil, chemical industry, mining, the whole system high efficient and reliable effectively reduces the cost of enterprise, has improved the supervision and safety in production level of enterprise greatly.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
As shown in Figure 1; The full section of portable frequency sweep of the present invention receiver comprises shell, is provided with built-in DDS sweep generator and full section receiver in the enclosure; Be provided with a display in case surface; Be provided with explosion-proof glass cover in the display front, the display back side is provided with the display circuit plate, and this display circuit plate is connected with the output of built-in DDS sweep generator and full section receiver respectively; The external replaceable battery that power supply comprises power panel and is attached thereto, power panel is connected with built-in sweep generator and full section receiver.Embedded receiver mainly adopts technology such as COFDM, and equipment volume is little, and is in light weight, convenient, flexible.
This product adopts the material of high performance index as the implosion guard shell, and degree of protection is high, and good environmental adaptability can be applicable in the industry such as petrochemical industry, is jolting, and high temperature all can use under the unsettled environment.
The full section of portable frequency sweep of the present invention receiver; Can be used with transmitter; The advanced COFDM modulation technique, channel coding/decoding technology and the error-control technique that adopt; In conjunction with MPEG2, H.263 look the audio compression coding techniques, can under " in the high-speed mobile ", " non-intervisibility " condition, realize the real-time synchronous transmission of video, audio frequency and data etc.And the employing implosion guard, degree of protection is high, requires environmental condition more to widen, the more high many advantages of power supply adaptive capacity and job stability.The present invention is characterized in that, can realize point-to-point, how point-to-point audio frequency and video transmission, possesses the real-time video monitoring function.
Table 1 is the technical parameter of the receiver among the present invention.
The concrete application approach of the present invention is a lot, and the above only is a preferred implementation of the present invention, should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the principle of the invention, can also make some improvement, these improvement also should be regarded as protection scope of the present invention.
Claims (5)
1. the full section of portable frequency sweep receiver; It is characterized in that, comprise shell, be provided with built-in sweep generator and full section receiver in the enclosure; Be provided with a display in case surface; The display back side is provided with the display circuit plate, and this display circuit plate is connected with the output of built-in sweep generator and full section receiver respectively, and built-in sweep generator and full section receiver also are connected with power supply.
2. the full section of portable frequency sweep according to claim 1 receiver is characterized in that said built-in sweep generator is the DDS sweep generator.
3. the full section of portable frequency sweep according to claim 1 and 2 receiver is characterized in that said power supply comprises power panel and the battery that is attached thereto, and said power panel is connected with built-in sweep generator and full section receiver.
4. the full section of portable frequency sweep according to claim 3 receiver is characterized in that said battery is the external replaceable battery.
5. the full section of portable frequency sweep according to claim 1 and 2 receiver is characterized in that, is provided with explosion-proof glass cover in the display front.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102611890A CN102752003A (en) | 2012-07-26 | 2012-07-26 | Portable sweep-frequency all-band receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102611890A CN102752003A (en) | 2012-07-26 | 2012-07-26 | Portable sweep-frequency all-band receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102752003A true CN102752003A (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102611890A Pending CN102752003A (en) | 2012-07-26 | 2012-07-26 | Portable sweep-frequency all-band receiver |
Country Status (1)
| Country | Link |
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| CN (1) | CN102752003A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1972141A (en) * | 2006-12-01 | 2007-05-30 | 北京北方烽火科技有限公司 | A receiving frequency-sweeping apparatus and method for TD-SCDMA radio frequency signal |
| CN201967140U (en) * | 2011-03-16 | 2011-09-07 | 中国普天信息产业北京通信规划设计院 | Integrated wireless network drive test equipment |
| CN202721665U (en) * | 2012-07-26 | 2013-02-06 | 南京威翔科技有限公司 | Portable sweep-frequency whole section receiver |
-
2012
- 2012-07-26 CN CN2012102611890A patent/CN102752003A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1972141A (en) * | 2006-12-01 | 2007-05-30 | 北京北方烽火科技有限公司 | A receiving frequency-sweeping apparatus and method for TD-SCDMA radio frequency signal |
| CN201967140U (en) * | 2011-03-16 | 2011-09-07 | 中国普天信息产业北京通信规划设计院 | Integrated wireless network drive test equipment |
| CN202721665U (en) * | 2012-07-26 | 2013-02-06 | 南京威翔科技有限公司 | Portable sweep-frequency whole section receiver |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121024 |