CN206422777U - For the quick change modeling signal transmission by optical fiber device under high potential very noisy - Google Patents
For the quick change modeling signal transmission by optical fiber device under high potential very noisy Download PDFInfo
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- CN206422777U CN206422777U CN201621470319.1U CN201621470319U CN206422777U CN 206422777 U CN206422777 U CN 206422777U CN 201621470319 U CN201621470319 U CN 201621470319U CN 206422777 U CN206422777 U CN 206422777U
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 16
- 239000003365 glass fiber Substances 0.000 title claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 35
- 230000003287 optical Effects 0.000 claims abstract description 23
- 230000000051 modifying Effects 0.000 claims abstract description 15
- 230000001105 regulatory Effects 0.000 claims abstract description 13
- 238000001914 filtration Methods 0.000 claims description 4
- 230000003750 conditioning Effects 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000001052 transient Effects 0.000 description 1
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Abstract
A kind of quick change modeling signal transmission by optical fiber device being used under high potential very noisy, including high-pressure side and low-pressure end, wherein high-pressure side includes impedance matching circuit, modulate circuit, voltage-frequency conversion circuit, electro-optical conversion circuit, and low-pressure end includes photoelectric switching circuit, frequency regulating circuit, filter circuit, voltage also primary circuit, and connected between high-pressure side and low-pressure end by optical cable；Wherein the impedance matching circuit of high-pressure side, modulate circuit, voltage-frequency conversion circuit, electro-optical conversion circuit are sequentially connected in series, and impedance matching circuit can carry out impedance matching；Modulate circuit can then carry out the conversion of signal voltage；Voltage-frequency conversion circuit can be changed the frequency of signal；Frequency signal can be converted to optical signal by electro-optical conversion circuit；And photoelectric switching circuit, frequency regulating circuit, filter circuit, the voltage also primary circuit of low-pressure end are sequentially connected in series.
Description
Technical field
The invention belongs to optical fiber transmission device field, and in particular to for the quick change modeling signal under high potential very noisy
Optical fiber transmission device.
Background technology
The transmission relation of the analog signal of high potential to the high low potential of system insulation, accurate point of power supply transien process
Analysis and the accurate control of feedback control system.Although oscillograph can be placed high potential observation station measured waveform by us,
Staff will be stopped in power supply every time, and the situation of system reliable ground could enter high-pressure area, analysis waveform, tune
Try efficiency very low, and the problems such as oscillograph sampled data snap shot, be unsuitable for waveform deployment analysis.Analog signal is all logical at present
Cross optical fiber to transmit to low-pressure side, voltage-frequency is carried out by traditional voltage-frequency conversion chip such as AD650 and frequency pressure is changed, due to chip
Proper property, cause signal transmission delay, corresponding signal bandwidth is by very big restriction, the transient process of power supply (1-2
μ s) it can not observe, the accuracy of the feedback control system of low-pressure side can also be affected.Based on above reason, it is necessary to adopt
Frequency is converted into using 74ls628 with modulate circuit (high speed amplifier chip composition) and carries out optical transport, in low-pressure side, utilize shaping
Filtering signal also primary circuit, obtains high-fidelity, the signal of low delay, for analyzing power supply characteristic and feeding feedback control system,
The transmitter has very high noiseproof feature simultaneously.
The content of the invention
Object of the present invention is to provide a kind of quick change modeling signal optical fibre biography being used under high potential very noisy
Defeated device, the broadband analog signal of the high potential of high-fidelity is obtained in low-pressure side.
Technical scheme is as follows：A kind of quick change modeling signal transmission by optical fiber being used under high potential very noisy
Device, including high-pressure side and low-pressure end, wherein high-pressure side include impedance matching circuit, modulate circuit, voltage-frequency conversion circuit, electric light and turned
Change circuit, and low-pressure end includes photoelectric switching circuit, frequency regulating circuit, filter circuit, voltage also primary circuit, and high-pressure side with
Connected between low-pressure end by optical cable；Wherein the impedance matching circuit of high-pressure side, modulate circuit, voltage-frequency conversion circuit, electric light turn
Change circuit to be sequentially connected in series, impedance matching circuit can carry out impedance matching；Modulate circuit can then carry out the conversion of signal voltage；Voltage-frequency
Change-over circuit can be changed the frequency of signal；Frequency signal can be converted to optical signal by electro-optical conversion circuit；And low-pressure end
Photoelectric switching circuit, frequency regulating circuit, filter circuit, voltage also primary circuit be sequentially connected in series, wherein photoelectric switching circuit can
Convert optical signals to electric signal；Electric signal can be shaped as rectangular pulse signal by frequency regulating circuit；Filter circuit includes
Differential circuit and two-stage Second-Order Active Filters, can be by rectangular pulse signal differential into narrow pulse signal, while carrying out two-stage has
Source is filtered；Voltage also primary circuit can carry out conditioning anti-noise processing.
The optical cable is multimode fibre.
The voltage-frequency conversion circuit includes 74LS628, and it can be changed the frequency of signal.
The electro-optical conversion circuit includes HFBER1414, and frequency signal can be converted to optical signal by it.
The photoelectric switching circuit includes HFBER2412, and it can convert optical signals to electric signal.
The remarkable result of the present invention is：Fast analogue signal under high potential, high-noise environment is realized high by optical fiber
Fidelity, money bandwidth, the transmission of small delay.
Brief description of the drawings
Fig. 1 is the quick change modeling signal transmission by optical fiber device signal of the present invention being used under high potential very noisy
Figure.
In figure:1- impedance matching circuits, 2- modulate circuits, 3- voltage-frequency conversion circuits, 4- electro-optical conversion circuits, 5- photoelectricity turn
Change circuit, 6- frequency regulating circuits, 7- filter circuits, 8- voltages also primary circuit, 9- optical cables.
Embodiment
As illustrated, for the quick change modeling signal transmission by optical fiber device under high potential very noisy, including high-pressure side with
Low-pressure end, wherein high-pressure side include impedance matching circuit 1, modulate circuit 2, voltage-frequency conversion circuit 3, electro-optical conversion circuit 4, and low
Pressure side includes photoelectric switching circuit 5, frequency regulating circuit 6, filter circuit 7, voltage also primary circuit 8, and high-pressure side and low-pressure end
Between connected by optical cable 9.The wherein impedance matching circuit 1 of high-pressure side, modulate circuit 2, voltage-frequency conversion circuit 3, electro-optic conversion
Circuit 4 is sequentially connected in series, and impedance matching circuit 1 can carry out impedance matching；Modulate circuit 2 can then carry out the conversion of signal voltage；Pressure
Frequency converter circuit 3 includes 74LS628, can be changed the frequency of signal；Electro-optical conversion circuit 4 includes HFBER1414, can be by
Frequency signal is converted to optical signal；And photoelectric switching circuit 5, frequency regulating circuit 6, filter circuit 7, the voltage of low-pressure end are reduced
Circuit 8 is sequentially connected in series, and wherein photoelectric switching circuit 5 includes HFBER2412, can convert optical signals to electric signal；Frequency is adjusted
Electric signal can be shaped as rectangular pulse signal by whole circuit 6；Filter circuit 7 includes differential circuit and two-stage second-order active filter
Device, can be by rectangular pulse signal differential into narrow pulse signal, while carrying out two-stage active power filtering；Voltage also primary circuit 8 can be carried out
Nurse one's health anti-noise processing.
High-pressure side is powered respectively with low pressure terminal circuit, and producing original analog using signal generator delivers to high-pressure side
Impedance matching circuit 1, carries out impedance matching in impedance matching circuit 1, and original analog enters modulate circuit 2 afterwards,
Original analog is converted to 0-5V voltage signal in modulate circuit 2, then voltage signal is sent into voltage-frequency conversion circuit 3,
Voltage-frequency conversion circuit 3 includes 74LS628, and voltage signal is converted to 0-4MHz frequency signals in frequency converter circuit 3 and sends into electric light
Change-over circuit 4, electro-optical conversion circuit 4 includes HFBER1414, and frequency signal is converted to optical signal by electro-optical conversion circuit 4, passes through
Optical cable 9 transmits the photoelectric switching circuit 5 into low-pressure end, and photoelectric switching circuit 5 includes HFBER2412, in opto-electronic conversion electricity
Convert optical signals to deliver to frequency regulating circuit 6 after electric signal in road 5, electric signal is shaped as rectangle by frequency regulating circuit 6
Pulse signal, and filter circuit 7 is delivered to, include differential circuit and two-stage Second-Order Active Filters in filter circuit 7, by rectangle
Pulse signal differential is into narrow pulse signal, while carrying out two-stage active power filtering, forming frequency, phase, amplitude and primary signal phase
Close signal simultaneously delivers to voltage also primary circuit 8, conditioning anti-noise processing is carried out in voltage also primary circuit 8, by the signal and letter
The primary signal contrast that number generator is produced, delay time is less than 1.5 μ s.
The optical cable 9 is multimode fibre.
Claims (5)
1. a kind of quick change modeling signal transmission by optical fiber device being used under high potential very noisy, it is characterised in that：Including high pressure
End and low-pressure end, wherein high-pressure side include impedance matching circuit (1), modulate circuit (2), voltage-frequency conversion circuit (3), electro-optic conversion
Circuit (4), and low-pressure end includes photoelectric switching circuit (5), frequency regulating circuit (6), filter circuit (7), voltage also primary circuit
(8), connected between high-pressure side and low-pressure end by optical cable (9)；Wherein impedance matching circuit (1), the modulate circuit of high-pressure side
(2), voltage-frequency conversion circuit (3), electro-optical conversion circuit (4) are sequentially connected in series, and impedance matching circuit (1) can carry out impedance matching；Adjust
Reason circuit (2) can then carry out the conversion of signal voltage；Voltage-frequency conversion circuit (3) can be changed the frequency of signal；Electric light turns
Optical signal can be converted to by frequency signal by changing circuit (4)；And the photoelectric switching circuit (5) of low-pressure end, frequency regulating circuit (6),
Filter circuit (7), voltage also primary circuit (8) are sequentially connected in series, and wherein photoelectric switching circuit (5) can convert optical signals to telecommunications
Number；Electric signal can be shaped as rectangular pulse signal by frequency regulating circuit (6)；Filter circuit (7) includes differential circuit and two
Level Second-Order Active Filters, can be by rectangular pulse signal differential into narrow pulse signal, while carrying out two-stage active power filtering；Voltage is also
Primary circuit (8) can carry out conditioning anti-noise processing.
2. a kind of quick change modeling signal transmission by optical fiber device being used under high potential very noisy according to claim 1,
It is characterized in that：The optical cable (9) is multimode fibre.
3. a kind of quick change modeling signal transmission by optical fiber device being used under high potential very noisy according to claim 1,
It is characterized in that：The voltage-frequency conversion circuit (3) includes 74LS628, and it can be changed the frequency of signal.
4. a kind of quick change modeling signal transmission by optical fiber device being used under high potential very noisy according to claim 1,
It is characterized in that：The electro-optical conversion circuit (4) includes HFBER1414, and frequency signal can be converted to optical signal by it.
5. a kind of quick change modeling signal transmission by optical fiber device being used under high potential very noisy according to claim 1,
It is characterized in that：The photoelectric switching circuit (5) includes HFBER2412, and it can convert optical signals to electric signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621470319.1U CN206422777U (en) | 2016-12-29 | 2016-12-29 | For the quick change modeling signal transmission by optical fiber device under high potential very noisy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621470319.1U CN206422777U (en) | 2016-12-29 | 2016-12-29 | For the quick change modeling signal transmission by optical fiber device under high potential very noisy |
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| CN206422777U true CN206422777U (en) | 2017-08-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110488065A (en) * | 2019-09-03 | 2019-11-22 | 大连理工大学 | A kind of high-voltage signal acquisition system based on optical fiber transmission |
-
2016
- 2016-12-29 CN CN201621470319.1U patent/CN206422777U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110488065A (en) * | 2019-09-03 | 2019-11-22 | 大连理工大学 | A kind of high-voltage signal acquisition system based on optical fiber transmission |
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