CN203661073U - Reverse noise monitoring apparatus and reverse optical receiver - Google Patents
Reverse noise monitoring apparatus and reverse optical receiver Download PDFInfo
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- CN203661073U CN203661073U CN201320604012.6U CN201320604012U CN203661073U CN 203661073 U CN203661073 U CN 203661073U CN 201320604012 U CN201320604012 U CN 201320604012U CN 203661073 U CN203661073 U CN 203661073U
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Abstract
The utility model discloses a reverse noise monitoring apparatus and a reverse optical receiver. The reverse noise monitoring apparatus comprises a voltage-controlled gain amplifier, a frequency mixer, a filter, a radio-frequency detector ad a micro-control unit which are sequentially connected, and a phase-locked loop which is connected with both the frequency mixer and the micro-control unit. The voltage-controlled gain amplifier is used for receiving and amplifying a reverse radio-frequency signal. The frequency mixer is used for performing frequency mixing of the amplified reverse radio-frequency signal and a signal output by the phase-locked loop. The phase-locked loop is used for enabling both the frequency and the phase of a controlled oscillator to maintain a determined relationship with an input signal. The filter is used for performing filtering processing on the mixed signal. The radio-frequency detector is used for converting the radio-frequency after the filtering processing into a voltage signal. The micro-control unit is used for processing the converted voltage signal. The reverse noise monitoring apparatus can fulfill an aim of visually monitoring signal noise.
Description
Technical field
The utility model relates to communication technical field, relates in particular to signal quality and detects.
Background technology
Backlight receiver is receiving light signal, and through opto-electronic conversion, signal passes to next stage by signal after amplifying.In the time that client will monitor the quality of this one stage signal, conventionally can only be by specific instrument such as frequency spectrograph, 860 equipment such as grade are measured.
But because frequency spectrograph build is large, heaviness, is inconvenient to carry.And although 860 be convenient for carrying, expensive.
Utility model content
The utility model provides a kind of inverse noise supervising device and backlight receiver, inverse noise is monitored to this function to be joined in backlight receiver, this function can collection signal noise data, then, by PC synthetic image, reach the object of monitor signal noise intuitively.
The utility model provides a kind of inverse noise supervising device, it is characterized in that, comprise connected successively voltage control Amplifier, frequency mixer, filter, rf detector and micro-control unit, and the phase-locked loop being all connected with described micro-control unit with described frequency mixer, wherein:
Described voltage control Amplifier, for receiving and amplifying reverse radio-frequency signal;
Frequency mixer, for by the signal mixing of the reverse radio-frequency signal after described amplification and phase-locked loop output;
Described phase-locked loop, all keeps determining relation with input signal for the frequency and the phase place that make controlled oscillator;
Filter, carries out filtering processing for the signal to after mixing;
Described rf detector, for being converted into voltage signal by radiofrequency signal after treatment described filtering;
Described micro-control unit, for processing the voltage signal after described conversion.
The utility model also provides a kind of backlight receiver, has inverse noise supervising device as above.
Compared with prior art, a kind of inverse noise supervising device and backlight receiver that the utility model provides, inverse noise is monitored to this function to be joined in backlight receiver, this function can collection signal noise data, then by PC synthetic image, reach the object of monitor signal noise intuitively.Removed the loaded down with trivial details step of testing with frequency spectrograph or 860 plug signals from, client can monitor the noise spectrum of reverse radio-frequency signal at any time intuitively by computer.
Brief description of the drawings
Fig. 1 is a kind of inverse noise supervising device of the utility model schematic diagram.
Embodiment
Below in conjunction with specific embodiments and the drawings, the utility model is elaborated.
The utility model provides a kind of inverse noise supervising device, comprise connected successively voltage control Amplifier (Voltage Gain Amplifier, be called for short VGA), frequency mixer, filter, rf detector and micro-control unit (Micro Control Unit, be called for short MCU), and phase-locked loop (the Phase Locked Loop being all connected with described micro-control unit with described frequency mixer, be called for short PLL), wherein:
Described voltage control Amplifier, for receiving and amplifying reverse radio-frequency signal;
Frequency mixer, for by the signal mixing of the reverse radio-frequency signal after described amplification and phase-locked loop output;
Described phase-locked loop, all keeps determining relation with input signal for the frequency and the phase place that make controlled oscillator, thereby obtains stable output frequency;
Filter, carries out filtering processing for the signal to after mixing;
Described rf detector, for being converted into voltage signal by radiofrequency signal after treatment described filtering;
Described micro-control unit, for processing the voltage signal after described conversion.
Wherein, need the reverse radio-frequency signal of monitoring to be normally coupled out by main road radiofrequency signal, its level is than the low 10dB of main path signal, therefore, and mixing again after need to this signal being amplified through VGA.
Wherein, frequency mixer is used for the signal mixing of the stabilized frequency of the PLL output of the reverse radio-frequency signal after amplifying and MCU control, thereby signal is carried out to frequency spectrum shift.For example frequency spectrum shift is to 314MHz.Then by filter, the noise signal of its all band of filtering, only retains for example signal of 314MHz frequency range.
Preferably, the utility model also designs described inverse noise supervising device and also comprises receiving-transmitting transmitter, for voltage signal after treatment described micro-control unit is sent, and can receive external signal to MCU, realizes the mutual of MCU and outside.Wherein, described receiving-transmitting transmitter can be universal asynchronous receiving-transmitting transmitter (Universal Asynchronous Receiver/Transmitter is called for short Uart).
Preferably, the utility model also designs described inverse noise supervising device and comprises the display processing unit that is provided with process software, for the voltage signal after reception & disposal, data is depicted as to spectrogram and shows.
Preferably, described micro-control unit is also connected with described voltage control Amplifier, through the gain of the total line traffic control voltage control Amplifier of synchronous serial Peripheral Interface (Serial Peripheral Interface, SPI)., described micro-control unit is connected with phase-locked loop through synchronous serial peripheral interface bus.
The inverse noise supervising device that the utility model provides, is integrated in backlight receiver inside.This device is coupled out part signal from main path signal and processes, and data after treatment are generated to visual picture by PC, reaches the object of real-time monitoring noise, has saved the loaded down with trivial details step with frequency spectrograph and 860 on-the-spot test.
The utility model also provides a kind of backlight receiver, has inverse noise supervising device as above.Join in backlight receiver thereby inverse noise is monitored to this function, the noise data that this function can collection signal, then, by PC synthetic image, reaches the object of monitor signal noise intuitively.Removed the loaded down with trivial details step of testing with frequency spectrograph or 860 plug signals from, client can monitor the noise spectrum of reverse radio-frequency signal at any time intuitively by computer.
Disclosed is above only several specific embodiment of the present utility model, and still, the utility model is not limited thereto, and the changes that any person skilled in the art can think of all should fall into protection range of the present utility model.
Claims (7)
1. an inverse noise supervising device, is characterized in that, comprises connected successively voltage control Amplifier, frequency mixer, filter, rf detector and micro-control unit, and the phase-locked loop being all connected with described micro-control unit with described frequency mixer, wherein:
Described voltage control Amplifier, for receiving and amplifying reverse radio-frequency signal;
Frequency mixer, for by the signal mixing of the reverse radio-frequency signal after described amplification and phase-locked loop output;
Described phase-locked loop, all keeps determining relation with input signal for the frequency and the phase place that make controlled oscillator;
Filter, carries out filtering processing for the signal to after mixing;
Described rf detector, for being converted into voltage signal by radiofrequency signal after treatment described filtering;
Described micro-control unit, for processing the voltage signal after described conversion.
2. inverse noise supervising device as claimed in claim 1, is characterized in that, also comprises:
Receiving-transmitting transmitter, for sending voltage signal after treatment described micro-control unit.
3. inverse noise supervising device as claimed in claim 2, is characterized in that:
Described receiving-transmitting transmitter is asynchronous receiving-transmitting transmitter.
4. inverse noise supervising device as claimed in claim 2, is characterized in that, also comprises:
Be provided with the display processing unit of process software, for the voltage signal after reception & disposal, data be depicted as to spectrogram and show.
5. inverse noise supervising device as claimed in claim 1, is characterized in that:
Described micro-control unit is also connected with described voltage control Amplifier, through the gain of synchronous serial peripheral interface bus control voltage control Amplifier.
6. inverse noise supervising device as claimed in claim 1, is characterized in that:
Described micro-control unit is connected with phase-locked loop through synchronous serial peripheral interface bus.
7. a backlight receiver, has as the inverse noise supervising device as described in any one in claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320604012.6U CN203661073U (en) | 2013-09-29 | 2013-09-29 | Reverse noise monitoring apparatus and reverse optical receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320604012.6U CN203661073U (en) | 2013-09-29 | 2013-09-29 | Reverse noise monitoring apparatus and reverse optical receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203661073U true CN203661073U (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320604012.6U Expired - Fee Related CN203661073U (en) | 2013-09-29 | 2013-09-29 | Reverse noise monitoring apparatus and reverse optical receiver |
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| CN (1) | CN203661073U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518834A (en) * | 2013-09-29 | 2015-04-15 | 北京太平洋莱特科技有限公司 | Inverse noise monitoring device and inverse optical receiver |
| CN108988948A (en) * | 2018-08-20 | 2018-12-11 | 中国科学院上海光学精密机械研究所 | Coherent light, which is kept pouring in, passs relay system and trunking method |
-
2013
- 2013-09-29 CN CN201320604012.6U patent/CN203661073U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518834A (en) * | 2013-09-29 | 2015-04-15 | 北京太平洋莱特科技有限公司 | Inverse noise monitoring device and inverse optical receiver |
| CN104518834B (en) * | 2013-09-29 | 2017-05-24 | 北京太平洋莱特科技有限公司 | Inverse noise monitoring device and inverse optical receiver |
| CN108988948A (en) * | 2018-08-20 | 2018-12-11 | 中国科学院上海光学精密机械研究所 | Coherent light, which is kept pouring in, passs relay system and trunking method |
| CN108988948B (en) * | 2018-08-20 | 2021-06-01 | 中国科学院上海光学精密机械研究所 | Coherent optical frequency transfer relay system and relay method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20180929 |