CN107911176A - A kind of mini signals solution tuned plate and its operating method - Google Patents
A kind of mini signals solution tuned plate and its operating method Download PDFInfo
- Publication number
- CN107911176A CN107911176A CN201711451346.3A CN201711451346A CN107911176A CN 107911176 A CN107911176 A CN 107911176A CN 201711451346 A CN201711451346 A CN 201711451346A CN 107911176 A CN107911176 A CN 107911176A
- Authority
- CN
- China
- Prior art keywords
- module
- fpga
- mcu
- fpga module
- tunnel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000011017 operating method Methods 0.000 title claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 26
- 230000003750 conditioning effect Effects 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 238000010304 firing Methods 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 claims description 3
- 241000208340 Araliaceae Species 0.000 claims 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 1
- 235000003140 Panax quinquefolius Nutrition 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 235000008434 ginseng Nutrition 0.000 claims 1
- 230000003287 optical effect Effects 0.000 description 12
- 239000000523 sample Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/40—Transceivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
- H04B10/54—Intensity modulation
- H04B10/541—Digital intensity or amplitude modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/564—Power control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/69—Electrical arrangements in the receiver
- H04B10/693—Arrangements for optimizing the preamplifier in the receiver
- H04B10/6931—Automatic gain control of the preamplifier
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/69—Electrical arrangements in the receiver
- H04B10/697—Arrangements for reducing noise and distortion
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
The invention discloses a kind of mini signals solution tuned plate and its operating method, including 8 tunnel photoelectric detection modules, signal conditioning circuit, 8 tunnel selecting switch, analog to digital conversion circuit, FPGA module, D/A converting circuit, light intensity control, MCU module and RS485 conversion circuits, 8 tunnel photoelectric detection module, signal conditioning circuit, 8 tunnel selecting switch, analog to digital conversion circuit, FPGA module, D/A converting circuit, light intensity control is sequentially connected, analog-digital conversion circuit as described also with MCU module, RS485 conversion circuits are sequentially connected, the FPGA module also with D/A converter module, power supply, modulated signal part is sequentially connected.The invention also discloses a kind of operating method of mini signals solution tuned plate.The present invention has the characteristics that small, rational in infrastructure, suitable popularization and application.
Description
Technical field
The invention belongs to technical field of optical fiber sensing, is related to a kind of mini signals solution tuned plate and its operating method.
Background technology
To complete to return to the demodulation work of optical signal, it is necessary to which one piece is appropriately embed formula and sets from probe in fibre optic hydrophone
It is standby.The equipment changes into electric signal after optical signal is received, by optical signal according to certain condition, by signal condition it
After change into digital signal, be sent in embedded chip and carry out algorithm process, and operation result is exported.In this process,
Embedded device also needs to the power of energy real-time feedback control optical signal, and adds other outsides during algorithm process and set
Standby information.Meanwhile the equipment volume is small, power consumption is low.General signal processing equipment on the market cannot meet the insertion
The requirement of formula equipment, is badly in need of a kind of mini signals solution tuned plate and its operating method in the prior art.
The content of the invention
It is an object of the present invention to provide a kind of mini signals solution tuned plate and its operating method.
Its technical solution is as follows：
A kind of mini signals solution tuned plate, including 8 tunnel photoelectric detection modules, signal conditioning circuit, 8 tunnel selecting switch, modulus
Conversion circuit, FPGA module, D/A converting circuit, light intensity control, MCU module and RS485 conversion circuits, 8 road photoelectricity
Detecting module, signal conditioning circuit, 8 tunnel selecting switch, analog to digital conversion circuit, FPGA module, D/A converting circuit, intensity control
Device is sequentially connected, and analog-digital conversion circuit as described is also sequentially connected with MCU module, RS485 conversion circuits, the FPGA module also with
D/A converter module, modulated signal part are sequentially connected.
Further, the signal conditioning circuit includes 8 tunnels.
Further, 8 tunnel selecting switch selects 1 multiple selector using 24 multiple selector for selecting 1 and 12.
The operating method of mini signals solution tuned plate of the present invention, comprises the following steps：
After system electrification, FPGA module and MCU module load configuration respectively from respective FLASH.MCU module, which first loads, matches somebody with somebody
After putting, wait long enough for, treat that FPGA module loading configuration finishes.MCU module detects that FPGA module has added
After load, to the inside of memory 1 write-in preset parameter, then energy line will be made to start to draw high, FPGA module is started to work.
FPGA module is interacted with MCU module by control line, address wire and data cable.Wherein control line has two,
Energy line is controlled by MCU module, inform that FPGA starts to work when effective；Firing line is controlled by FPGA, and MCU module is notified when effective
Read the data come in FPGA module.
2 region of memory are opened up inside FPGA module, interacts and communicates with MCU.Memory 1 stores FPGA module work
Parameter, MCU module have can write permission, can be by changing the value above memory 1, to change the working status of FPGA module.
Memory 2 store FPGA module demodulation after acoustical signal data, MCU have can read right, when receiving the rising edge in firing line,
MCU module reads acoustical signal data and handles from FPGA module.
Beneficial effects of the present invention：
The one of the logical resource for possessing 120KLE and 576 hardware multipliers is used in the mini signal solution tuned plates of the present invention
Piece FPGA, it is sufficient to classical PGC demodulating algorithms after optimization are accommodated, wherein, MCU uses Cortex-M4 kernels, 32bit
Width, dominant frequency are a chip of 168MHz, which possesses hardware computation unit, can carry out doing single precision in the monocycle at the same time
Multiplication and division computing, is relatively adapted to this occasion of less demanding to calculation amount.The present invention also has light intensity control module, by light
The optical signal that source produces by exporting again after certain optical attenuation.The ratio of the decay is by FPGA according to by photodetection mould
The light intensity signal that block receives carries out real-time feedback adjustment.Ensure the best effort model of the light signal strength that receives in equipment
Within enclosing.The present invention has the characteristics that small, rational in infrastructure, suitable popularization and application.
Brief description of the drawings
Fig. 1 is the structure diagram of mini signals solution tuned plate of the present invention；
Fig. 2 is the work flow diagram of mini signals solution tuned plate of the present invention.
Embodiment
Technical scheme is described in more detail with reference to the accompanying drawings and detailed description.
With reference to Fig. 1, a kind of mini signals solution tuned plate, including 8 tunnel photoelectric detection modules, signal conditioning circuit, the selection of 8 tunnels are opened
Pass, analog to digital conversion circuit, FPGA module, D/A converting circuit, light intensity control, MCU module and RS485 conversion circuits, described 8
Road photoelectric detection module, signal conditioning circuit, 8 tunnel selecting switch, analog to digital conversion circuit, FPGA module, D/A converting circuit, light
Strong controller is sequentially connected, and analog-digital conversion circuit as described is also sequentially connected with MCU module, RS485 conversion circuits, the FPGA moulds
Block is also sequentially connected with D/A converter module, modulated signal part.
The signal conditioning circuit includes 8 tunnels.
8 tunnel selecting switch selects 1 multiple selector using 24 multiple selector for selecting 1 and 12.
Each part is described in detail to more than below.
Photoelectric detection module is using a multichannel, the photodetector of small-sized encapsulated, the light that will be received from probe
Signal is converted into analog electrical signal.
Signal conditioning circuit for be converted to per optical signal all the way come electric signal, take single signal condition mode,
By the level range control of electric signal to the section that can be received by AD, unwanted high-frequency signal is filtered out to avoid as far as possible
Aliasing effect improves signal-to-noise ratio.And the noise during control signal transmission by the way of single-ended transfer difference.
8 tunnel selecting switch use a 8 tunnel selecting switch, and the electric signal timesharing that 8 road optical signals change into is merged into one
On the high speed signal of road, equipment scale is reduced.The 8 tunnel selecting switch is controlled by FPGA, is matched with resolving module.
In order to reach the requirement of signal driving force, equipment selects 1 multichannel using 24 multiple selector for selecting 1 and 12
Selector realizes a 8 tunnel selecting switch.
Analog to digital conversion circuit：In order to reduce the crosstalk between passage, equipment, which uses, has 125MSPS sample rates, 16bit
The a piece of low noise modulus conversion chip of sampling precision, possesses LVDS output modes, is received easy to FPGA.In addition, the chip can
To receive the clock for coming from FPGA, make the data that FPGA is received more controllable.
FPGA portion uses the logical resource for possessing 120KLE and a piece of FPGA of 576 hardware multipliers, it is sufficient to accommodates
Classical PGC demodulating algorithms after optimization.
FPGA portion multiplexes chip by controlling, and gives the clock signal of analog-to-digital conversion module, and control AD timesharing is adopted
The signal of sample difference optical channel.The signal of each passage is passed through into classics PGC demodulating algorithm modules respectively, and by after the completion of demodulation
Acoustical signal data send MCU to class SRAM interface agreement.
FPGA also needs to the modulated signal that control DA parts produce specific frequency particular phases.
FPGA controls D/A converting circuit outputs level signals, the light intensity signal of control optical attenuator output.
The acoustical signal data after resolving mainly are read in MCU parts with class SRAM agreements from FPGA, and pass through ICP/IP protocol
Stack module is sent by interface of cable.Specifically, ICP/IP protocol stack part uses hardware ICP/IP protocol chip stack
W5500.Meanwhile MCU can also receive the instruction from host computer in a debug state, the demodulation parameter of FPGA is adjusted in real time.
MCU uses Cortex-M4 kernels, 32bit bit wides, and dominant frequency is a chip of 168MHz, which possesses at the same time
Hardware computation unit, can carry out doing single precision multiplication and division computing in the monocycle, relatively be adapted to this of less demanding to calculation amount
Occasion.
MCU is communicated with FPGA using class SRAM agreements, while by the start and stop of MCU controls FPGA.
MCU needs to receive the signal from external electrical compass by RS485 conversion circuits, believes with the sound after FPGA processing
Number participates in computing together.
Modulated signal part：The equipment uses a piece of output accuracy for possessing 16 and the number of the settling time of 0.5us
Mould conversion chip, the modulated signal of a specific frequency particular phases is produced to light source.
Light intensity control has light intensity control module, by the optical signal that light source produces after certain optical attenuation again
Secondary output.The ratio of the decay carries out real-time feedback adjustment by FPGA according to the light intensity signal received by probe.Ensure to connect
Received light signal strength is within the scope of the best effort of equipment.
As shown in Fig. 2, FPGA and MCU is interacted by control line, address wire and data cable.Control line has two, makes
Energy line is controlled by MCU, informs that FPGA starts to work when effective.Firing line is controlled by FPGA, notifies MCU to read on FPGA when effective
The data come.
2 region of memory are opened up inside FPGA, interacts and communicates with MCU.Memory 1 stores the parameter of FPGA work, MCU
With can write permission, can be by changing the value above memory 1, to change the working status of FPGA.Memory 2 stores FPGA demodulation
Acoustical signal data afterwards, MCU have can read right, when receiving the rising edge in firing line, MCU reads acoustical signal from FPGA
Data are simultaneously handled.
After system electrification, FPGA and MCU load configuration respectively from respective FLASH.After MCU first loads configuration, etc.
Treat the sufficiently long time, treat that FPGA loading configurations finish.MCU detects that FPGA after loaded, writes to the inside of memory 1
Preset parameter, then will make energy line start to draw high, and FPGA starts to work.
The foregoing is only a preferred embodiment of the present invention, protection scope of the present invention not limited to this, any ripe
Those skilled in the art are known in the technical scope of present disclosure, the letter for the technical solution that can be become apparent to
Altered or equivalence replacement are each fallen within protection scope of the present invention.
Claims (4)
- A kind of 1. mini signals solution tuned plate, it is characterised in that：Including 8 tunnel photoelectric detection modules, signal conditioning circuit, the selection of 8 tunnels Switch, analog to digital conversion circuit, FPGA module, D/A converting circuit, light intensity control, MCU module and RS485 conversion circuits, institute State 8 tunnel photoelectric detection modules, signal conditioning circuit, 8 tunnel selecting switch, analog to digital conversion circuit, FPGA module, digital-to-analogue conversion electricity Road, light intensity control are sequentially connected, and analog-digital conversion circuit as described is also sequentially connected with MCU module, RS485 conversion circuits, described FPGA module is also sequentially connected with D/A converter module, modulated signal part.
- 2. mini signals solution tuned plate according to claim 1, it is characterised in that：The signal conditioning circuit includes 8 tunnels.
- 3. mini signals solution tuned plate according to claim 1, it is characterised in that：8 tunnel selecting switch selects 1 using 24 Multiple selector and 12 select 1 multiple selector.
- 4. the operating method of mini signals solution tuned plate described in claim 1, it is characterised in that：After system electrification, FPGA module and MCU module loads configuration respectively from respective FLASH；After MCU module first loads configuration, wait long enough for, treat FPGA module loading configuration finishes；MCU module detects that FPGA module after loaded, writes prefabricated to the inside of memory 1 Parameter, then will make energy line start to draw high, and FPGA module is started to work；FPGA module is interacted with MCU module by control line, address wire and data cable, and control line has two, make energy line by MCU module controls, and informs that FPGA starts to work when effective；Firing line is controlled by FPGA, notifies MCU module to read FPGA when effective The data come in module；2 region of memory are opened up inside FPGA module, interacts and communicates with MCU；Memory 1 stores the ginseng of FPGA module work Number, MCU module have can write permission, can be by changing the value above memory 1, to change the working status of FPGA module；Memory 2 Store FPGA module demodulation after acoustical signal data, MCU have can read right, when receiving the rising edge in firing line, MCU moulds Block reads acoustical signal data and handles from FPGA module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711451346.3A CN107911176B (en) | 2017-12-27 | 2017-12-27 | Mini signal demodulation board and operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711451346.3A CN107911176B (en) | 2017-12-27 | 2017-12-27 | Mini signal demodulation board and operation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107911176A true CN107911176A (en) | 2018-04-13 |
| CN107911176B CN107911176B (en) | 2024-06-18 |
Family
ID=61871644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711451346.3A Active CN107911176B (en) | 2017-12-27 | 2017-12-27 | Mini signal demodulation board and operation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107911176B (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1592405A (en) * | 1976-09-29 | 1981-07-08 | Gulf & Western Industries | System for converting analogue signals to multiplexed digital data |
| WO2007076682A1 (en) * | 2005-12-30 | 2007-07-12 | Huawei Technologies Co., Ltd. | A broadband user access device and a method for broadband user access processing |
| KR20090031058A (en) * | 2007-09-21 | 2009-03-25 | 한국전자통신연구원 | Memory switching control device using open serial matching, its operation method and data storage device applied thereto |
| CN101615888A (en) * | 2009-07-14 | 2009-12-30 | 中国船舶重工集团公司第七一五研究所 | A kind of signal demodulation method of portable multifunctional optical fiber hydrophone |
| CN102201014A (en) * | 2011-05-24 | 2011-09-28 | 清华大学 | Multi-channel data collection unit |
| CN102945211A (en) * | 2012-11-23 | 2013-02-27 | 青岛海信移动通信技术股份有限公司 | Mobile terminal data writing method, writing device and mobile terminal |
| WO2014097305A1 (en) * | 2012-12-23 | 2014-06-26 | Orpak Systems Ltd | Method and system for retrieving vehicular parameters from a vehicle data bus |
| CN104021063A (en) * | 2014-05-14 | 2014-09-03 | 南京大学 | Modular computer forensic system and method based on hardware virtualization |
| WO2016095715A1 (en) * | 2014-12-18 | 2016-06-23 | 中兴通讯股份有限公司 | Optical transceiving module and implementation method therefor |
| CN105720986A (en) * | 2016-01-22 | 2016-06-29 | 山西大学 | Multi-channel data collection system with unified time stamp |
| WO2016150385A1 (en) * | 2015-03-24 | 2016-09-29 | 合肥工业大学 | Fpga- and dsp-based gas ultrasonic flowmeter and metering method therefor |
| CN205862163U (en) * | 2016-07-22 | 2017-01-04 | 上海电科电器科技有限公司 | The data transmission device of breaker controller |
| CN106502953A (en) * | 2016-11-16 | 2017-03-15 | 天津津航计算技术研究所 | The method for improving 1553 bus transfer bandwidth |
| CN206075260U (en) * | 2016-06-20 | 2017-04-05 | 何飞宇 | A kind of computer data acquiring control system based on FPGA |
| CN206402233U (en) * | 2016-12-10 | 2017-08-11 | 蔡辉剑 | A kind of communication equipment based on novel optical fiber structure |
| CN107367985A (en) * | 2017-07-27 | 2017-11-21 | 安徽工程大学 | A kind of Multichannel Real-time Data Acguisition System |
| CN207652443U (en) * | 2017-12-27 | 2018-07-24 | 长沙深之瞳信息科技有限公司 | A kind of mini signals solution tuned plate |
-
2017
- 2017-12-27 CN CN201711451346.3A patent/CN107911176B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1592405A (en) * | 1976-09-29 | 1981-07-08 | Gulf & Western Industries | System for converting analogue signals to multiplexed digital data |
| WO2007076682A1 (en) * | 2005-12-30 | 2007-07-12 | Huawei Technologies Co., Ltd. | A broadband user access device and a method for broadband user access processing |
| KR20090031058A (en) * | 2007-09-21 | 2009-03-25 | 한국전자통신연구원 | Memory switching control device using open serial matching, its operation method and data storage device applied thereto |
| CN101615888A (en) * | 2009-07-14 | 2009-12-30 | 中国船舶重工集团公司第七一五研究所 | A kind of signal demodulation method of portable multifunctional optical fiber hydrophone |
| CN102201014A (en) * | 2011-05-24 | 2011-09-28 | 清华大学 | Multi-channel data collection unit |
| CN102945211A (en) * | 2012-11-23 | 2013-02-27 | 青岛海信移动通信技术股份有限公司 | Mobile terminal data writing method, writing device and mobile terminal |
| WO2014097305A1 (en) * | 2012-12-23 | 2014-06-26 | Orpak Systems Ltd | Method and system for retrieving vehicular parameters from a vehicle data bus |
| CN104021063A (en) * | 2014-05-14 | 2014-09-03 | 南京大学 | Modular computer forensic system and method based on hardware virtualization |
| WO2016095715A1 (en) * | 2014-12-18 | 2016-06-23 | 中兴通讯股份有限公司 | Optical transceiving module and implementation method therefor |
| WO2016150385A1 (en) * | 2015-03-24 | 2016-09-29 | 合肥工业大学 | Fpga- and dsp-based gas ultrasonic flowmeter and metering method therefor |
| CN105720986A (en) * | 2016-01-22 | 2016-06-29 | 山西大学 | Multi-channel data collection system with unified time stamp |
| CN206075260U (en) * | 2016-06-20 | 2017-04-05 | 何飞宇 | A kind of computer data acquiring control system based on FPGA |
| CN205862163U (en) * | 2016-07-22 | 2017-01-04 | 上海电科电器科技有限公司 | The data transmission device of breaker controller |
| CN106502953A (en) * | 2016-11-16 | 2017-03-15 | 天津津航计算技术研究所 | The method for improving 1553 bus transfer bandwidth |
| CN206402233U (en) * | 2016-12-10 | 2017-08-11 | 蔡辉剑 | A kind of communication equipment based on novel optical fiber structure |
| CN107367985A (en) * | 2017-07-27 | 2017-11-21 | 安徽工程大学 | A kind of Multichannel Real-time Data Acguisition System |
| CN207652443U (en) * | 2017-12-27 | 2018-07-24 | 长沙深之瞳信息科技有限公司 | A kind of mini signals solution tuned plate |
Non-Patent Citations (1)
| Title |
|---|
| 刘雪亭;许斌;: "基于FPGA的多路信号智能集成测控系统设计", 微型机与应用, no. 12, 6 July 2016 (2016-07-06) * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107911176B (en) | 2024-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100392420C (en) | Multi-channel tester for contactless application chips | |
| CN102565850A (en) | Wireless telemetry seismic signal acquisition system | |
| CN107367985A (en) | A kind of Multichannel Real-time Data Acguisition System | |
| CN111505701B (en) | Compact accelerator beam phase and position measuring system and method | |
| CN207652443U (en) | A kind of mini signals solution tuned plate | |
| CN207649757U (en) | A kind of 32 channel signal solution tuned plates | |
| CN107911176A (en) | A kind of mini signals solution tuned plate and its operating method | |
| CN203838301U (en) | Automatic testing device for pre-amplifier | |
| CN106502147B (en) | The device of pure-tone pulse detection and parameter Estimation in a kind of underwater acoustic channel based on FPGA | |
| CN100356650C (en) | Intelligent data collecting and overvoltage protective system for high and medium voltage power device | |
| CN103631453A (en) | Signal receiving device of infrared touch frame | |
| CN203632291U (en) | 25 serially-connected power lithium battery management acquisition module | |
| CN218446423U (en) | Multichannel data acquisition system of oil direct-reading spectrometer | |
| CN202929411U (en) | FPGA-based continuous uploaded high speed data acquisition device | |
| CN206531899U (en) | A kind of data collecting system based on V/F | |
| CN202841099U (en) | A microwave system control device | |
| CN102109609B (en) | Method for designing high resolution overlay switch circuit of petroleum seismic prospecting system | |
| CN204883357U (en) | A three dimensions electricity magnetic field distribution detecting system for hydroelectric power plant | |
| CN111812187B (en) | Multi-thread integrated integrated main control system applied to FAIMS | |
| Shu et al. | Expansion application of dSPACE for HILS | |
| CN210666043U (en) | A marine seismic data acquisition and control device | |
| CN201199325Y (en) | Vibration controller | |
| CN1353507A (en) | Core IC for implementing carrier communication over low-voltage power transmission line by software and radio technique | |
| CN206099760U (en) | Be used for power analysis appearance power module | |
| CN105203481A (en) | Spectrophotometer data collecting system and method based on pulse xenon lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |