CN103837773A - Oscilloscope near-end measuring system for optical fiber transmission control signals - Google Patents
Oscilloscope near-end measuring system for optical fiber transmission control signals Download PDFInfo
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- CN103837773A CN103837773A CN201410094515.2A CN201410094515A CN103837773A CN 103837773 A CN103837773 A CN 103837773A CN 201410094515 A CN201410094515 A CN 201410094515A CN 103837773 A CN103837773 A CN 103837773A
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- oscillograph
- photoelectric commutator
- shielded box
- oscilloscope
- optical fiber
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Abstract
Provided is an oscilloscope near-end measuring system for optical fiber transmission control signals. The oscilloscope near-end measuring system for the optical fiber transmission control signals is formed by connecting a conical capacitor partial pressure sensor (14), an oscilloscope (12), a photolectric transducer B (9), a photolectric transducer A (1) and a control panel (2) in sequence, the oscilloscope (12) is further connected with a storage battery (6) through an inverter (8), and the oscilloscope (12), the photolectric transducer B (9), the inverter (8) and the storage battery (6) are all arranged in a shielding box (4). The oscilloscope near-end measuring system for the optical fiber transmission control signals is a measuring system capable of effectively obtaining and measuring high-voltage signals, and has the advantages of being modularized and integrated in measurement, and being resistant to external electromagnetic interference, capable of carrying out monitoring and measuring remotely, accurate in measuring result, strong in expandability and the like.
Description
Technical field
This measuring method relates to the communications field, relates in particular to the method for transmitting containing the channel oscilloscope signal measurement of the high voltage signal of stray capacitance.
Background technology
In the current development of power equipment, the collection that more can rely on data with obtain, this has also comprised that part is used channel oscilloscope to obtain the test adjustment of waveform.
Current correlative study both domestic and external shows, impulse test particularly switching impulse and fast transient overvoltage (very fast transit over-voltage, VFTO) can be found the Insulation Problems of the power equipments such as GIS more timely and accurately.Therefore, the related scientific research mechanism of Japan, India and China all comparatively pays close attention to the problem of this respect, day by day the highlighting of power equipment testing on-site impact importance.Under this measurement environment, oscillographic proximal measurement and far-end control seem particularly important.
Place and the control desk standoff distance of the output of high voltage measuring end signal be can not determine, distant apart from meeting for security consideration.Just need to obtain and analyze data by the mode of oscillograph remote control, remote regulating in this case.
Settle when distant owing to measuring control desk and oscillograph, have the problems such as inconvenient operation.If use other control mode to remove far-end control oscillograph, the control mode that regulates measurement to need can improve the efficiency of experiment to a great extent to relevant setting.Common RJ45 cable interface can be with the measurements interference of electric signal, this title of RJ represents registered jack (Registered Jack), it is USOC (Universal Service Ordering Codes, the generic service Sort Code) code that derives from Bell System.RJ45 is 8 needle connector parts, is widely used in LAN (Local Area Network) and ADSL broadband access network user's LA Management Room netting twine.Also can reduce the interference of electric signal in the time measuring if substitute concentric cable with photoelectric commutator as signal transmission means.
Be positioned over the far-end measuring mode in shielded box simultaneously, coordinate the electromagnetic screen means of the shielded box earthing of casing and wire mesh pad can give the better measurement environment of oscillograph.
Measure under environment at some high pressure containing the stray capacitance of having living space, directly measurement also can impact oscillograph.So can use the mode of capacitive divider to obtain low-pressure side voltage based on space stray capacitance, then prevent that through integrator and oscilloprobe distortion from obtaining suitable measurement voltage.
Accordingly, can find out to the present invention be directed to oscillograph Long-distance Control and guarantee to propose in the situation of signal fidelity, there is realistic meaning.
Summary of the invention
The object of the invention is to solve the difficulty containing measuring high voltage signal in the environment of space stray capacitance, Long-distance Control oscillograph obtains and the environment of measuring-signal not convenient, and with the fidelity problem of the measuring-signal transfer mode of different frequency undesired signal.
The present invention realizes according to following technical scheme.
An oscillograph proximal measurement system for Optical Fiber Transmission control signal, feature of the present invention is: sequentially connected and composed by taper capacitance partial pressure sensor, oscillograph, photoelectric commutator B, photoelectric commutator A, control desk; Oscillograph is also connected with accumulator by inverter; Oscillograph, photoelectric commutator B, inverter, accumulator are all arranged in shielded box; Wherein:
1) low-pressure side of taper capacitance partial pressure sensor is got voltage, imports the channel oscilloscope in shielded box into through concentric cable and integrator;
2) oscillograph uses shielded box to do electromagnetic screen, offers logical (diameter 18mm) hole on shielded box, and channel oscilloscope cable transferring head via through holes is connected on capacitance partial pressure sensor, and adapter is tightly connected in shielded box is electric, guarantees shield effectiveness;
3) oscillographic signal is connected to photoelectric commutator B above by the ethernet coaxial cable of RJ45 interface, and oscillograph relies on the storage battery power supply through inverter inversion in metallic shield case;
4) signal of photoelectric commutator B, through optical fiber interface, is drawn the photoelectric commutator A receiving near control desk upper from shielded box, is converted to the ethernet coaxial cable of RJ45 interface after photoelectric commutator A on the computer terminal port that is connected to control desk.
The invention has the advantages that:
A. there is measurement mode blocking, integrated, anti-external electromagnetic interference.
B. supervisory control is measured, and measurement result is accurate, the advantage that extensibility is strong.
Further set forth the content of this measuring system below in conjunction with accompanying drawing and example.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
See Fig. 1, a kind of oscillograph proximal measurement system of Optical Fiber Transmission control signal, feature of the present invention is: sequentially connected and composed by taper capacitance partial pressure sensor 14, oscillograph 12, photoelectric commutator B 9, photoelectric commutator A 1, control desk 2; Oscillograph 12 is also connected with accumulator 6 by inverter 8; Oscillograph 12, photoelectric commutator B 9, inverter 8, accumulator 6 are all arranged in shielded box 4; Wherein:
1) low-pressure side of taper capacitance partial pressure sensor 14 is got voltage, imports oscillograph 12 passages in shielded box 4 into through concentric cable and integrator 13;
2) oscillograph 12 uses shielded box 4 to do electromagnetic screen, on shielded box 4, offer logical (diameter 18mm) hole, oscillograph 12 passage cable transferring head via through holes are connected on capacitance partial pressure sensor, and adapter is tightly connected in shielded box 4 is electric, guarantee shield effectiveness;
3) oscillographic signal is connected on photoelectric commutator B 9 by the ethernet coaxial cable 10 of RJ45 interface, and oscillograph relies on the interior accumulator 6 through inverter 8 inversions of metallic shield case 4 to power;
4) signal of photoelectric commutator B 9 is through optical fiber 5 interfaces, from shielded box 4, draw and receive near on the photoelectric commutator A 1 of control desk 2, the ethernet coaxial cable 3 that is converted to RJ45 interface after photoelectric commutator A 1 is being connected on the computer terminal port of control desk 2.
See Fig. 1, this diagram has provided the overall schematic of this oscillograph proximal measurement system.In figure, conical capacitive transducer imports through oscillographic probe wire concentric cable and integrator 13 the low-pressure side voltage of taking from capacitive divider 14 into oscillograph 12, wherein shielded box 4 has held oscillograph 12, photoelectric commutator B 9, inverter 8 and accumulator 6 these four main elements as a standalone module, wherein DC-to-AC inverter makes 12V direct current be converted to 230V interchange, and model is Sol SAA-1000A.Casing itself plays a part the isolated electromagnetic interference (EMI) of electromagnetic screen.The positive and negative tactile utmost point 7 of accumulator picks out wire to inverter and carries out rectification, and the alternating current that makes the direct current of 12V be converted to 230V is received on the power supply of oscillograph 12 by power lead 11 again.The data result of oscillograph 12 and control mode are imported in photoelectric commutator B 9 through the ethernet coaxial cable 10 of RJ45 interface, then take out optical fiber 5 signals and draw casing, can only transmit the anti-electric signal interference performance of data by light signal so strong.Optical fiber 5 is received near the ethernet coaxial cable 3 that converts back again RJ45 interface on the photoelectric commutator A 1 of control desk 2, is finally directly connected on the RJ45 interface of control desk 2.
Claims (1)
1. an oscillograph proximal measurement system for Optical Fiber Transmission control signal, is characterized in that: by taper capacitance partial pressure sensor (14), oscillograph (12), photoelectric commutator B(9), photoelectric commutator A(1), control desk (2) sequentially connects and composes; Oscillograph (12) is also connected with accumulator (6) by inverter (8); Oscillograph (12), photoelectric commutator B(9), inverter (8), accumulator (6) be all arranged in shielded box (4); Wherein:
1) low-pressure side of taper capacitance partial pressure sensor (14) is got voltage, imports oscillograph (12) passage in shielded box (4) into through concentric cable and integrator (13);
2) oscillograph (12) uses shielded box (4) to do electromagnetic screen, on shielded box (4), offer through hole, the diameter of through hole is 18mm, oscillograph (12) passage cable transferring head via through holes is connected on capacitance partial pressure sensor, adapter, in electric being tightly connected of shielded box (4), guarantees shield effectiveness;
3) oscillographic signal is connected to photoelectric commutator B(9 by the ethernet coaxial cable (10) of RJ45 interface) upper, oscillograph relies on accumulator (6) power supply through inverter (8) inversion in metallic shield case (4);
4) photoelectric commutator B(9) signal through optical fiber (5) interface, from shielded box (4), draw the photoelectric commutator A(1 receiving near control desk (2)) upper, through photoelectric commutator A(1) after be converted to RJ45 interface ethernet coaxial cable (3) be connected on the computer terminal port of control desk (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410094515.2A CN103837773A (en) | 2014-03-14 | 2014-03-14 | Oscilloscope near-end measuring system for optical fiber transmission control signals |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410094515.2A CN103837773A (en) | 2014-03-14 | 2014-03-14 | Oscilloscope near-end measuring system for optical fiber transmission control signals |
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| CN103837773A true CN103837773A (en) | 2014-06-04 |
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| CN201410094515.2A Pending CN103837773A (en) | 2014-03-14 | 2014-03-14 | Oscilloscope near-end measuring system for optical fiber transmission control signals |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110346650A (en) * | 2019-07-12 | 2019-10-18 | 大连海事大学 | The taper capacitance detecting device of micro- plastics in a kind of detection water |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5570144A (en) * | 1978-11-21 | 1980-05-27 | Fujitsu Ltd | Searching system for optical transmission system |
| CN101295430A (en) * | 2008-04-21 | 2008-10-29 | 上海大学 | Optical fiber communication system capable of monitoring multiple mining conveyor belts |
| CN102072982A (en) * | 2010-10-26 | 2011-05-25 | 清华大学 | Device and system for acquiring very fast transient overvoltage sensing signal |
| CN102590678A (en) * | 2012-02-27 | 2012-07-18 | 华北电力大学 | Electromagnetic disturbance measurement system for secondary system of alternating current power transmission line series compensation device platform |
| CN103091591A (en) * | 2013-02-04 | 2013-05-08 | 北京电力设备总厂 | Real-time monitoring method and real-time monitoring system for high-voltage electric reactor |
-
2014
- 2014-03-14 CN CN201410094515.2A patent/CN103837773A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5570144A (en) * | 1978-11-21 | 1980-05-27 | Fujitsu Ltd | Searching system for optical transmission system |
| CN101295430A (en) * | 2008-04-21 | 2008-10-29 | 上海大学 | Optical fiber communication system capable of monitoring multiple mining conveyor belts |
| CN102072982A (en) * | 2010-10-26 | 2011-05-25 | 清华大学 | Device and system for acquiring very fast transient overvoltage sensing signal |
| CN102590678A (en) * | 2012-02-27 | 2012-07-18 | 华北电力大学 | Electromagnetic disturbance measurement system for secondary system of alternating current power transmission line series compensation device platform |
| CN103091591A (en) * | 2013-02-04 | 2013-05-08 | 北京电力设备总厂 | Real-time monitoring method and real-time monitoring system for high-voltage electric reactor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110346650A (en) * | 2019-07-12 | 2019-10-18 | 大连海事大学 | The taper capacitance detecting device of micro- plastics in a kind of detection water |
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Application publication date: 20140604 |