CN107807579A - A kind of the optical signal loop-around data acquisition system and method for the conversion of sample rate integral multiple - Google Patents
A kind of the optical signal loop-around data acquisition system and method for the conversion of sample rate integral multiple Download PDFInfo
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- CN107807579A CN107807579A CN201711148457.7A CN201711148457A CN107807579A CN 107807579 A CN107807579 A CN 107807579A CN 201711148457 A CN201711148457 A CN 201711148457A CN 107807579 A CN107807579 A CN 107807579A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24215—Scada supervisory control and data acquisition
Abstract
The invention discloses the optical signal loop-around data acquisition system and method for a kind of sample rate integral multiple conversion.The system includes fiber coupling module, photoelectric conversion module, analog-to-digital conversion module, control reconfiguration module and signal time delay module, on the one hand exporting for fiber coupling module sequentially passes through photoelectric conversion module, analog-to-digital conversion module, control reconfiguration module transfer to host computer, on the other hand feed back to fiber coupling module by signal time delay module；Treat that light signal enters fiber coupling module, make the circulation of its repetition by replicating and being delayed；Then circulation output obtains the sampled signal of sample rate integral multiple conversion by opto-electronic conversion, analog-to-digital conversion and control reconfiguration.The present invention significantly improves the sample rate of system in the case where not changing ADC sample rates.
Description
Technical field
The present invention relates to data acquisition and treatment technology, is specifically related to a kind of optical signal of sample rate integral multiple conversion and follows
Loop data acquisition system and method.
Background technology
Data acquisition is the process to one or more signal acquisition object informations, is widely used in civilian, business, work
Industry, military, the numerous areas such as medical treatment, scientific research, it together form with sensor technology, signal processing technology, computer technology
The basis of modern detecting.And the extensive use with data collecting system with the development of science and technology, to data acquisition system
Many technical indicators of system propose higher and higher requirement.For example, in pulsed range laser radar system, as pulse is believed
Number pulsewidth it is more and more narrow, high-frequency signal field just needs data collecting system to have high sample rate.
At present, the data collecting system of high speed realizes that ADC is that data are adopted generally from high-speed ADC and FPGA combination
Collecting system realizes the core component of high speed acquisition, and systematic sampling rate is mainly by ADC sample rates, FPGA interface rate limit, it is desirable to
Obtain the system of higher sampling rate, it is necessary to the ADC and FPGA of higher rate.Due to cost and technical requirements, ADC
With FPGA price as speed almost increases again into geometry.Therefore need to design one kind in the case where meeting sampling rate,
Lower-cost high-speed data acquistion system, meet modern industrial production, it is military, it is growing in life and scientific research
The data acquisition request of high speed.
The content of the invention
It is an object of the invention to provide a kind of optical signal loop-around data acquisition system of sample rate integral multiple conversion and side
Method
Solve the object of the invention technical solution be：A kind of optical signal loop-around data of sample rate integral multiple conversion is adopted
Collecting system, including fiber coupling module, photoelectric conversion module, analog-to-digital conversion module, control reconfiguration module and signal time delay module,
Fiber coupling module export on the one hand sequentially pass through photoelectric conversion module, analog-to-digital conversion module, control reconfiguration module transfer to
Host computer, fiber coupling module is on the other hand fed back to by signal time delay module.
The collecting method of optical signal loop-around data acquisition system, treat that light signal enters fiber coupling module, pass through
Replicate and be delayed the circulation for repeating it；Then circulation output is sampled by opto-electronic conversion, analog-to-digital conversion and control reconfiguration
The sampled signal of rate integral multiple conversion.
Compared with prior art, its remarkable advantage is the present invention：The present invention makes in the case where not changing ADC sample rates
The sample rate of system significantly improves.
Brief description of the drawings
Fig. 1 is the structured flowchart of the present invention.
Fig. 2 is the detail view of fiber coupling module of the present invention.
Fig. 3 is signal reconstruction module diagram of the present invention
Embodiment
Below in conjunction with the accompanying drawings the present invention program is further illustrated with specific embodiment.
As shown in figure 1, the optical signal loop-around data acquisition system of sample rate integral multiple conversion, including fiber coupling module,
Photoelectric conversion module, analog-to-digital conversion module, control reconfiguration module and signal time delay module, the output of fiber coupling module is on the one hand
Photoelectric conversion module, analog-to-digital conversion module, control reconfiguration module transfer are sequentially passed through to host computer, is on the other hand prolonged by signal
When module feedback to fiber coupling module.
Fiber coupling module includes the gating module and replication module being sequentially connected with, and gating module in light path to treating light-metering
Signal carries out physics switching or logical operation；Signal replication module receives the signal from signal gating module, creates two again
Signal output processed, carries out subsequent sampling into photoelectric conversion module all the way, and another way entering signal time delay module is circulated.Institute
The light pulse signal of measurement enters fiber coupling module, and original signal is replicated two-way and sent out by gated module, replication module, its
The first via optical signal of middle submitting is re-fed into control reconfiguration module and stored and computing after opto-electronic conversion, analog-to-digital conversion,
The another way optical signal replicating signal of submitting enters back into fiber coupling module after time delay module is delayed, and repeats said process,
Until sampling is completed.
The gating module is optical-fiber bundling device, and the replication module includes the image intensifer and fiber optic splitter being sequentially connected with
Device.
The optical fiber splitter is planar waveguide-type shunt.
The signal time delay module is controllable image intensifer.
The image intensifer is erbium-doped fiber amplifier.
The analog-to-digital conversion module uses the ADC08500 of TI companies.
The control reconfiguration module is using the EP4CE40F23C8 serial E of Cyclone IV of Altare companies.
The collecting method of optical signal loop-around data acquisition system, it is characterised in that treat that light signal enters light first
Fine coupling module, make the circulation of its repetition by replicating and being delayed；Then circulation output passes through opto-electronic conversion, analog-to-digital conversion and control
System reconstruct obtains the sampled signal of sample rate integral multiple conversion.
The control reconfiguration is using staggeredly reconstructing method.
Embodiment 1：
In the present embodiment, gating module is realized using the optical-fiber bundling device of high coupling efficiency.Optical-fiber bundling device is molten
Melt manufactured a kind of end pumping device on the basis of tapered fiber beam, stability is good, is easy to and other optical fibre devices form nothing
Seam connection, efficiently can carry out coupling by multi beam input light and be merged into an optical fiber output, be adapted in high-power lower work, but
Transmitting procedure is easily lost, and use is often connected with fiber amplifier.Meanwhile replication module is using the image intensifer being sequentially connected with
And optical fiber splitter, specifically use PLC type shunt (planar waveguide-type shunt).Because PLC type shunt has wide wavelength
The advantages such as scope, small volume, reliability are high, light splitting is uniform, are applicable here.
Signal time delay module is realized by controllable image intensifer, including optical fiber and image intensifer, and optical fiber here can use
Fixed or variable length realizes the control to delay time, and delay time is simultaneously true by sampling time and sampling interval
It is fixed.One or more image intensifers are used to compensate in loop consumption caused by part, also can anti-stop signal in the loop with mistake
Mode pass through loop.Signal delay module ensure that in both time delayed signal and original signal only have one be it is active, i.e., original
Signal after being collected completely, then time delayed signal is acquired.Meanwhile sampling number is when reaching expected, controllable image intensifer
Stop amplification, optical signal rapid decay, reach control sampling number effect.Controllable optical fibre amplifier can be selected in light in this implementation
Domain is amplified, and has the advantages that stability is good, it is easy to be coupled with conventional fiber, low, bandwidth the EDFA (Er-doped fibers of loss
Amplifier) realize.
The Time Continuous received, amplitude also continuous analog quantity are converted to time discrete, width by data acquisition module
It is worth also discrete data signal, qualified high-speed ADC may be selected to realize according to the characteristic of collection signal.Selected in this example
It is a low-power consumption, high performance CMOS analog-digital converters with the ADC08500 of TI companies, 500MSPS, 8bit can be achieved at a high speed
The collection of data.
Control reconfiguration module realizes the control to circuit and the reconstruct of signal, including FPGA and DDR2.Due to the letter
Number it is high-frequency signal, FPGA (field programmable gate array) is as a kind of semi-custom electricity in ASIC (application specific integrated circuit) field
Road and existing product, the aspects such as speed is fast, programmable, integrated level is high have powerful functions and benefits, be adapted to high-speed data
Collection and processing etc. application.The data signal of high speed is entered with LVDS (low-voltage differential signal) level transmission mode
FPGA, DDR2 is stored in after being cached by fifo module to data, staggeredly reconstructing for signal is carried out after sampling terminates.Herein
There is the data buffer storage being exceedingly fast from the EP4CE40F23C8 that the E of Cyclone IV of Altare companies are serial, the chip in example
Speed and larger memory capacity, control and data receiver to ADC can be realized.
Claims (10)
1. a kind of optical signal loop-around data acquisition system of sample rate integral multiple conversion, it is characterised in that including fiber coupling mould
Block, photoelectric conversion module, analog-to-digital conversion module, control reconfiguration module and signal time delay module, the output one of fiber coupling module
Aspect sequentially passes through photoelectric conversion module, analog-to-digital conversion module, control reconfiguration module transfer to host computer, on the other hand passes through letter
Number time delay module feeds back to fiber coupling module.
2. optical signal loop-around data acquisition system according to claim 1, it is characterised in that the fiber coupling module bag
The gating module and replication module being sequentially connected with are included, gating module in light path to treating that light signal carries out physics switching or logic
Operation；Signal replication module receives the signal from signal gating module, two replica signal outputs is created, all the way into photoelectricity
Modular converter carries out subsequent sampling, and another way entering signal time delay module is circulated.
3. optical signal loop-around data acquisition system according to claim 2, it is characterised in that the gating module is optical fiber
Bundling device, the replication module include the image intensifer and optical fiber splitter being sequentially connected with.
4. optical signal loop-around data acquisition system according to claim 3, it is characterised in that the optical fiber splitter is flat
Face waveguide type shunt.
5. optical signal loop-around data acquisition system according to claim 1, it is characterised in that the signal time delay module is
Controllable image intensifer.
6. optical signal loop-around data acquisition system according to claim 1, it is characterised in that the image intensifer is er-doped
Fiber amplifier.
7. optical signal loop-around data acquisition system according to claim 1, it is characterised in that the analog-to-digital conversion module is adopted
With the ADC08500 of TI companies.
8. optical signal loop-around data acquisition system according to claim 1, it is characterised in that the control reconfiguration module is adopted
With the EP4CE40F23C8 of the E of Cyclone IV series of Altare companies.
9. based on the collecting method of the optical signal loop-around data acquisition system described in claim 1-8 any one, it is special
Sign is, treats that light signal enters fiber coupling module, makes the circulation of its repetition by replicating and being delayed；Then circulation output is logical
Cross opto-electronic conversion, analog-to-digital conversion and control reconfiguration and obtain the sampled signal of sample rate integral multiple conversion.
10. the optical signal loop-around data acquisition method of sample rate integral multiple conversion according to claim 9, its feature exist
In the control reconfiguration is using staggeredly reconstructing method.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711148457.7A CN107807579B (en) | 2017-11-17 | 2017-11-17 | Optical signal cycle data acquisition system and method with integral multiple conversion of sampling rate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711148457.7A CN107807579B (en) | 2017-11-17 | 2017-11-17 | Optical signal cycle data acquisition system and method with integral multiple conversion of sampling rate |
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| CN107807579A true CN107807579A (en) | 2018-03-16 |
| CN107807579B CN107807579B (en) | 2020-08-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112987197A (en) * | 2021-02-22 | 2021-06-18 | 李建该 | Optical device automatic coupling system based on FPGA and data acquisition method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103791937A (en) * | 2014-01-15 | 2014-05-14 | 上海波汇通信科技有限公司 | Device and method for acquiring data in distributed optical fiber sensing system |
| CN204203743U (en) * | 2014-10-23 | 2015-03-11 | 天津港东科技发展股份有限公司 | A kind of signal acquiring system of spectrometer |
| CN104596633A (en) * | 2014-12-26 | 2015-05-06 | 华中科技大学 | Ultra-long distance distributed optical sensing device and method based on two-way optical amplification |
| CN106547240A (en) * | 2016-10-27 | 2017-03-29 | 国电南瑞科技股份有限公司 | A kind of port sample rate can separate configurations site collection and control public terminals and method |
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- 2017-11-17 CN CN201711148457.7A patent/CN107807579B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103791937A (en) * | 2014-01-15 | 2014-05-14 | 上海波汇通信科技有限公司 | Device and method for acquiring data in distributed optical fiber sensing system |
| CN204203743U (en) * | 2014-10-23 | 2015-03-11 | 天津港东科技发展股份有限公司 | A kind of signal acquiring system of spectrometer |
| CN104596633A (en) * | 2014-12-26 | 2015-05-06 | 华中科技大学 | Ultra-long distance distributed optical sensing device and method based on two-way optical amplification |
| CN106547240A (en) * | 2016-10-27 | 2017-03-29 | 国电南瑞科技股份有限公司 | A kind of port sample rate can separate configurations site collection and control public terminals and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112987197A (en) * | 2021-02-22 | 2021-06-18 | 李建该 | Optical device automatic coupling system based on FPGA and data acquisition method thereof |
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