CN103592611A - Magnetic resonance echo signal simulator and simulation system and signal processing method of magnetic resonance echo signal simulator - Google Patents
Magnetic resonance echo signal simulator and simulation system and signal processing method of magnetic resonance echo signal simulator Download PDFInfo
- Publication number
- CN103592611A CN103592611A CN201210287546.0A CN201210287546A CN103592611A CN 103592611 A CN103592611 A CN 103592611A CN 201210287546 A CN201210287546 A CN 201210287546A CN 103592611 A CN103592611 A CN 103592611A
- Authority
- CN
- China
- Prior art keywords
- signal
- magnetic resonance
- data
- simulator
- simulate
- 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.)
- Pending
Links
Images
Abstract
The invention discloses a magnetic resonance echo signal simulator and simulation system and a signal processing method of the magnetic resonance echo signal simulator. The magnetic resonance echo signal simulator comprises a main processor and a main memory, wherein the main processor is connected with a user interface module. The main processor is connected with an FPGA module via a dual-port RAM so as to perform data buffer memory exchange. The output end of the FPGA module is connected with a simulation channel so as to perform digital signal modulation calculation and generate a needed digital simulation signal for the simulation channel. According to the magnetic resonance echo signal simulator and simulation system and the signal processing method of the magnetic resonance echo signal simulator, the main processor is connected with the FPGA module via the dual-port RAM so as to perform the simulation data buffer memory exchange, and the output end of the FPGA module is connected with the simulation channel so as to generate the magnetic resonance simulation signal, so that a magnetic resonance spectrometer does not need the cooperation between a magnet and an amplifier in tests before system integration, and requirements on devices, personnel, places and time are reduced.
Description
Technical field
The present invention relates to a kind of emulator, analogue system and signal processing method thereof, relate in particular to a kind of magnetic resonance echoes signal simulator, analogue system and signal processing method thereof.
Background technology
The testing authentication in nuclear magnetic resonance spectrometer system signal send and receive loop at present need to integrate itself and magnetic resonance machine system, especially need huge magnet to produce powerful magnetic field uniformly, and need radio frequency signal amplifiers to produce the radio-frequency field of actual needs.Whole test is subject to equipment, place, time and personnel's restriction.Therefore,, in order conveniently magnetic resonance spectrum instrument system to be tested and to be debugged, be necessary to provide magnetic resonance echoes signal simulator, analogue system and signal processing method thereof.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of magnetic resonance echoes signal simulator, analogue system and signal processing method thereof, can produce magnetic resonance simulate signal, make not need in the test of nuclear magnetic resonance spectrometer before the system integration cooperation of magnet, coil and amplifier, reduce the requirement to equipment, personnel, place and time.
The present invention solves the problems of the technologies described above the technical scheme adopting to be to provide a kind of magnetic resonance echoes signal simulator, comprise primary processor and primary memory, described primary processor is connected with Subscriber Interface Module SIM, described primary processor is connected and carries out data buffer storage exchange with FPGA module by dual port RAM, the output terminal of described FPGA module is connected with analog channel, and the Digital Simulation signal that carries out digital signal modulated calculating and generate needs is to analog channel.
Above-mentioned magnetic resonance echoes signal simulator, wherein, described Subscriber Interface Module SIM comprises Ethernet interface, serial line interface, touch-screen, keyboard and/or mouse, select and transmit signal data for user.
Above-mentioned magnetic resonance echoes signal simulator, wherein, described primary memory comprises built-in Flash storer, for USB interface and the SD card memory interface extending out.
Above-mentioned magnetic resonance echoes signal simulator, wherein, described every road analog channel comprises connected successively digital to analog converter, narrow band filter and attenuation controller.
The present invention, for solving the problems of the technologies described above the signal processing method that a kind of above-mentioned magnetic resonance echoes signal simulator is also provided, comprises the steps: a) by Subscriber Interface Module SIM, to primary processor, to input simulate signal data; B) primary processor is sent into simulate signal data in dual port RAM; C) the simulate signal data in described dual port RAM are exported to described FPGA module, and described FPGA module carries out outputing in described analog channel after digital signal processing; D) described analog channel converts digital signal to simulating signal, then passes through narrow-band filtering, and decay obtains the magnetic resonance simulate signal of final output.
The signal processing method of above-mentioned magnetic resonance echoes signal simulator, wherein, the simulate signal data of described step in a) comprise view data or k-space data, described view data changes into k-space data by inverse fast Fourier transform, and described view data or k-space data are stored in described primary memory or from Ethernet interface.
The signal processing method of above-mentioned magnetic resonance echoes signal simulator, wherein, described step b) the simulate signal data in comprise K-space Frame, parameter control frame, control command frame.
The signal processing method of above-mentioned magnetic resonance echoes signal simulator, wherein, the simulate signal data of described step in a) also comprise by Subscriber Interface Module SIM selects interpolation algorithm, intermediate frequency Modulation frequency/phase and the narrow-band filtering centre frequency confirmed, described step c) in, digital signal processing comprises described k-space data is carried out to interpolation, digital filtering, digital intermediate frequency modulation and Digital Up Convert, and the data based predetermined sequential of simulate signal after processing or outside timing control signal output in described analog channel.
The signal processing method of above-mentioned magnetic resonance echoes signal simulator, wherein, described analog channel is a plurality of, simulate signal data corresponding to each analog channel comprise view data and the coil sensitivity matrix for generation of K-space data.
The signal processing method of above-mentioned magnetic resonance echoes signal simulator, wherein, described primary memory comprises built-in Flash storer, for USB interface and the SD card memory interface extending out, stores the fpga logic configuration file of a plurality of different editions in described Flash storer.
The present invention also provides a kind of magnetic resonance echoes signal emulation system for solving the problems of the technologies described above, wherein, comprise a plurality of above-mentioned magnetic resonance echoes signal simulators, described a plurality of magnetic resonance echoes signal simulator is connected by optical fiber interface, during multi-machine parallel connection emulation, an emulator is as main frame, other emulators, as slave, move the simulate signal that an emulation produces more passages simultaneously.
The control method of above-mentioned magnetic resonance echoes signal emulation system, wherein, during multi-machine parallel connection emulation, described main frame is except normal simulate signal produces function, the emulated data of being also responsible for primary processor to send over is distributed to each slave by optical fiber interface, and by optical fiber interface or coaxial cable interface, carries out the synchronous of work schedule in simulation process; Described slave is only responsible for the emulated data that Receiving Host sends, and under the control of synchronizing signal according to timing sequence generating simulate signal, and send.
The present invention contrasts prior art following beneficial effect: magnetic resonance echoes signal simulator provided by the invention, analogue system and signal processing method thereof, described primary processor is connected with FPGA module and is carried out the exchange of emulated data buffer memory by dual port RAM, the output terminal of described FPGA module is connected with analog channel and produces magnetic resonance simulate signal, thereby make not need in the test of nuclear magnetic resonance spectrometer before the system integration cooperation of magnet and amplifier, reduce the requirement to equipment, personnel, place and time.
Accompanying drawing explanation
Fig. 1 is magnetic resonance echoes signal simulator circuit module schematic diagram of the present invention;
Fig. 2 is magnetic resonance echoes signal simulator signal processing flow figure of the present invention;
Fig. 3 is magnetic resonance echoes signal simulator signal conversion schematic diagram of the present invention;
Fig. 4 is magnetic resonance echoes signal simulator multi-machine parallel connection simulation architecture schematic diagram of the present invention.
In figure:
1 Subscriber Interface Module SIM 2 display module 3 primary processors
4 primary memory 5 dual port RAM 6 optical fiber interfaces
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is magnetic resonance echoes signal simulator circuit module schematic diagram of the present invention.
Refer to Fig. 1, magnetic resonance echoes signal simulator provided by the invention comprises primary processor 3 and primary memory 4, primary processor 3 is connected multiple interfaces interface is provided with Subscriber Interface Module SIM 1, display module 2, wherein, primary processor 3 is crossed dual port RAM 5 and is connected and carries out data buffer storage exchange with FPGA module 7, the output terminal of FPGA module 7 is connected with analog channel 8, carry out the Digital Simulation signal of digital signal modulated calculating generation needs to analog channel 8, a plurality of passage O_MR1, the O_MR2 of analog channel 8 and signal input output interface 9 ..., the O_MRx output that is connected; In signal input output interface 9, also can directly provide external timing signal I_CLK and trigger pip I_TRIGGER to FPGA module 7.
Above-mentioned magnetic resonance echoes signal simulator, the concrete effect of modules is as follows:
Subscriber Interface Module SIM 1: provide multiple interfaces interface so that user selects and transmits the data content of the signal that will produce, comprise Ethernet interface, serial line interface, touch-screen, keyboard and/or mouse etc.; Display module 2: preferred TFT LCD, provides the operation to equipment with assisted user of a kind of display interface.
Primary processor 3: for operation system, system master routine, user interactions program, and a part of data are calculated; Primary memory 4: provide enough storage capacity to preserve user's parameter configuration, signal content etc., comprise the Flash storer that device is built-in, for USB interface and the SD card memory interface extending out;
Programmable logic device (PLD) FPGA module 7: provide a kind of real-time digital signal modulated platform to calculate and to generate the digital simulate signal needing, reserved two optical fiber interfaces (being called for short light mouth SFP1 and SFP2 in figure) 6 are used for doing distributed expansion; Dual port RAM 5 is for the data buffering between CPU and FPGA device; Analog channel 8 comprises digital to analog converter, narrow band filter and attenuation controller, finally generates the simulate signal of needed simulation.
Magnetic resonance echoes signal simulator provided by the invention is for generation of magnetic resonance simulate signal, and this simulate signal is for the signals collecting to magnetic resonance system, and signal is processed and follow-up image reconstruction function is verified.This emulator comprises touch-screen, can make equipment more portable, in the situation that not needing keyboard and mouse network, still can to simulation parameter, arrange easily and select.This emulator comprises network interface, can carry out remote access by network, when equipment connection does not need special messenger to guard on equipment side after well, and is conducive to two places cooperation and connects and adjust.This emulator comprises a plurality of analog channels, can simulate the magnetic resonance signal of a plurality of receiving coils simultaneously, and the emulation receiving for hyperchannel is provided convenience.This emulator is with SD card and USB interface, and store this locality that user can copy data to equipment by USB flash disk or SD storage card, in the situation that there is no network, also can conveniently not use.
Fig. 2 is magnetic resonance echoes signal simulator signal processing flow figure of the present invention.
Please continue referring to Fig. 2, concrete signal treatment step is as follows:
Step S201: user can select to want simulate signal data by touch-screen or mouse-keyboard in the file of the local storage of equipment, the file that can select comprises two kinds: conventional picture format (jpeg, tiff, bmp etc.), or the available view data that undergoes reconstruction (DICOM form), or K-space data.The above two are defined as image; The 3rd data are defined as the k-space(K-space) data.Simulate signal data also can be downloaded these data and be saved in this locality from other main frames by Ethernet.
Step S202: when user has confirmed to want the file of emulation and started emulation, primary processor 3 is sent into emulated data form according to the rules in dual port RAM 5 and gone; The form of described regulation comprises: K-space Frame, parameter control frame, control command frame; For a plurality of analog channels, comprise image data frame and image sensitivity matrix for generation of described K-space data.
Step S203: the logic detection in FPGA module 7 starts to read emulated data and it is carried out to a series of digital signal processing after commencing signal, comprise interpolation, digital filtering, digital intermediate frequency modulation, Digital Up Convert (Digital Up Converter) etc.; As an emulation platform, user can select and configure the algorithm moving in this equipment, systematic parameter can be adjusted, the signal producing with more real Reality simulation magnetic resonance system, therefore the centre frequency of described narrow band filter is adjustable, makes described emulator can simulate the magnetic resonance signal under different magnetic field field intensity; Then according to predetermined sequential or outside timing control signal, simulate signal is sent in high-speed A/D converter and gone.If the signal source of input is image, before interpolation, also need to carry out inverse fast Fourier transform (Inverse Fast Fourier Transform, iFFT), convert thereof into the data in K-Space space, this calculating can realize by software in CPU, also can in FPGA, the module by hardware process.
Some parameters in digital signal processing in FPGA are as interpolation algorithm, the frequency of intermediate frequency Modulation, and phase places etc. are specified by user, and by dual port RAM 5, transmit together in company with emulated data.The numerically-controlled oscillator NCO signal of digital intermediate frequency modulation and the digital LO signal of up-conversion also can be inputted into from outside, such as transmitting by high speed fibre interface 6.The centre frequency of the narrow-band filtering of simulation part belongs to user's input parameter, is finally by FPGA, to be configured adjustment.
Step S204: analog channel 8 converts digital signal to simulating signal, then passes through narrow-band filtering, and gain reduction obtains the magnetic resonance simulate signal of final output.
Analog signal channel in the present invention comprises a more than road, can realize the signal output on some roads simultaneously, the magnetic resonance signal that simulation never receives with coil.For the simulation of multi-channel coil, can input coil sensitivity matrix Ai, thus can integrated images input coil information, for the image of rear end, to process, the signal conversion that specifically may carry out is as shown in Figure 3.
Device of the present invention is reserved with high-speed figure optical fiber interface 6, can be for the expansion of equipment, between a plurality of equipment, can string and form the analogue system of multi-machine parallel connection by high speed fibre path, in the time of emulation, an equipment is as main frame, other equipment, as slave, move an emulation simultaneously, can produce like this simulate signal of more passages, be equivalent to the signal in more RF receiving coil to carry out emulation, as shown in Figure 4.Concrete control procedure is as follows: during multi-machine parallel connection emulation, described main frame is except normal simulate signal produces function, the emulated data of being also responsible for primary processor (CPU) 3 to send over is distributed to each slave by optical fiber interface 6, and by optical fiber interface 6 or coaxial cable interface, carries out the synchronous of work schedule in simulation process; Described slave is only responsible for the emulated data that Receiving Host sends, and under the control of synchronizing signal according to timing sequence generating simulate signal, and send.Described main frame and slave are by adopting different fpga logic configuration files to realize, in this equipment, the logic configuration file of FPGA leaves in the Flash of primary memory 4 of equipment, the logic of being carried out FPGA by CPU when device power is restarted loads, in Flash, store the configuration file of a plurality of versions, host logic in the time of such as a plurality of equipment on-line execute and slave logic, CPU selects corresponding logical versions to load according to the situation of equipment connection and user's configuration.This makes equipment have good plasticity and dirigibility, and as in equipment connection Ethernet, the FPGA configuration file in Flash can remote update, is convenient to the upgrading of equipment software and hardware.
Although the present invention discloses as above with preferred embodiment; so it is not in order to limit the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when doing a little modification and perfect, so protection scope of the present invention is worked as with being as the criterion that claims were defined.
Claims (12)
1. a magnetic resonance echoes signal simulator, it is characterized in that, comprise primary processor (3) and primary memory (4), described primary processor (3) is connected with Subscriber Interface Module SIM (1), described primary processor (3) is connected and carries out data buffer storage exchange with FPGA module (7) by dual port RAM (5), the output terminal of described FPGA module (7) is connected with analog channel (8), and the Digital Simulation signal that carries out digital signal modulated calculating and generate needs is to analog channel (8).
2. magnetic resonance echoes signal simulator as claimed in claim 1, is characterized in that, described Subscriber Interface Module SIM (1) comprises Ethernet interface, serial line interface, and touch-screen, keyboard and/or mouse, select and transmit signal data for user.
3. magnetic resonance echoes signal simulator as claimed in claim 1, is characterized in that, described primary memory (4) comprises built-in Flash storer, for USB interface and the SD card memory interface extending out.
4. magnetic resonance echoes signal simulator as claimed in claim 1, is characterized in that, described every road analog channel (8) comprises connected successively digital to analog converter, narrow band filter and attenuation controller.
5. a signal processing method for magnetic resonance echoes signal simulator as claimed in claim 1, is characterized in that, comprises the steps:
A) by Subscriber Interface Module SIM (1), to primary processor (3), input simulate signal data;
B) primary processor (3) is sent into described simulate signal data in dual port RAM (5);
C) the simulate signal data in described dual port RAM (5) are exported to described FPGA module (7), and described FPGA module (7) carries out outputing in described analog channel (8) after digital signal processing;
D) described analog channel (8) converts digital signal to simulating signal, then passes through narrow-band filtering, and decay obtains the magnetic resonance simulate signal of final output.
6. the signal processing method of magnetic resonance echoes signal simulator as claimed in claim 5, it is characterized in that, the simulate signal data of described step in a) comprise view data or k-space data, described view data changes into k-space data by inverse fast Fourier transform, and described view data or k-space data are stored in described primary memory (4) or from Ethernet interface.
7. the signal processing method of magnetic resonance echoes signal simulator as claimed in claim 5, is characterized in that, described step b) in simulate signal data comprise K-space Frame, parameter control frame and control command frame.
8. the signal processing method of magnetic resonance echoes signal simulator as claimed in claim 6, it is characterized in that, the simulate signal data of described step in a) also comprise by Subscriber Interface Module SIM (1) selects the interpolation algorithm of confirming, intermediate frequency Modulation frequency/phase and narrow-band filtering centre frequency, described step c) in, digital signal processing comprises described k-space data is carried out to interpolation, digital filtering, digital intermediate frequency modulation and Digital Up Convert, the data based predetermined sequential of simulate signal after processing or outside timing control signal output in described analog channel (8).
9. the signal processing method of magnetic resonance echoes signal simulator as claimed in claim 5, it is characterized in that, described analog channel (8) is a plurality of, and simulate signal data corresponding to each analog channel comprise view data and the coil sensitivity matrix for generation of K-space data.
10. the signal processing method of magnetic resonance echoes signal simulator as claimed in claim 5, it is characterized in that, described primary memory (4) comprises built-in Flash storer, for USB interface and the SD card memory interface extending out, in described Flash storer, store the fpga logic configuration file of a plurality of different editions.
11. 1 kinds of magnetic resonance echoes signal emulation systems, it is characterized in that, comprise a plurality of magnetic resonance echoes signal simulators as claimed in claim 1, described a plurality of magnetic resonance echoes signal simulator is connected by optical fiber interface (6), during multi-machine parallel connection emulation, an emulator is as main frame, and other emulators are as slave.
The control method of 12. 1 kinds of magnetic resonance echoes signal emulation systems as claimed in claim 11, it is characterized in that, during multi-machine parallel connection emulation, described main frame is except normal simulate signal produces function, the emulated data of being also responsible for primary processor (3) to send over is distributed to each slave by optical fiber interface (6), and by optical fiber interface (6) or coaxial cable interface, carries out the synchronous of work schedule in simulation process; Described slave is only responsible for the emulated data that Receiving Host sends, and under the control of synchronizing signal according to timing sequence generating simulate signal, and send.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210287546.0A CN103592611A (en) | 2012-08-13 | 2012-08-13 | Magnetic resonance echo signal simulator and simulation system and signal processing method of magnetic resonance echo signal simulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210287546.0A CN103592611A (en) | 2012-08-13 | 2012-08-13 | Magnetic resonance echo signal simulator and simulation system and signal processing method of magnetic resonance echo signal simulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103592611A true CN103592611A (en) | 2014-02-19 |
Family
ID=50082823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210287546.0A Pending CN103592611A (en) | 2012-08-13 | 2012-08-13 | Magnetic resonance echo signal simulator and simulation system and signal processing method of magnetic resonance echo signal simulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103592611A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115438623A (en) * | 2022-11-07 | 2022-12-06 | 中国科学技术大学先进技术研究院 | Method, device and equipment for synthesizing magnetic field of multichannel magnetic resonance coil and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1462607A (en) * | 2003-04-30 | 2003-12-24 | 沈阳东软数字医疗系统股份有限公司 | Fast rotatory spin echo imaging method of magnetic resonance for medical treatment diagnosis |
| CN101413994A (en) * | 2008-11-28 | 2009-04-22 | 中国科学院武汉物理与数学研究所 | Signal receiving and transmitting device of digital magnetic nuclear resonance lock |
| US20100137945A1 (en) * | 2008-11-26 | 2010-06-03 | Medtronic, Inc. | Automated verification of mri compatibility of active implantable medical device |
| CN102520381A (en) * | 2011-12-30 | 2012-06-27 | 苏州安科医疗系统有限公司 | Data acquisition device for magnetic resonance system |
| CN202794492U (en) * | 2012-08-13 | 2013-03-13 | 上海联影医疗科技有限公司 | Magnetic resonance echo signal simulator and simulation system |
-
2012
- 2012-08-13 CN CN201210287546.0A patent/CN103592611A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1462607A (en) * | 2003-04-30 | 2003-12-24 | 沈阳东软数字医疗系统股份有限公司 | Fast rotatory spin echo imaging method of magnetic resonance for medical treatment diagnosis |
| US20100137945A1 (en) * | 2008-11-26 | 2010-06-03 | Medtronic, Inc. | Automated verification of mri compatibility of active implantable medical device |
| CN101413994A (en) * | 2008-11-28 | 2009-04-22 | 中国科学院武汉物理与数学研究所 | Signal receiving and transmitting device of digital magnetic nuclear resonance lock |
| CN102520381A (en) * | 2011-12-30 | 2012-06-27 | 苏州安科医疗系统有限公司 | Data acquisition device for magnetic resonance system |
| CN202794492U (en) * | 2012-08-13 | 2013-03-13 | 上海联影医疗科技有限公司 | Magnetic resonance echo signal simulator and simulation system |
Non-Patent Citations (2)
| Title |
|---|
| 石玮: "基于FPGA和双端口RAM的DDS任意波形发生器的实现", 《湖北师范学院学报（自然科学版）》 * |
| 雷都等: "核磁共振任意波形发生器的研制", 《波谱学杂志》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115438623A (en) * | 2022-11-07 | 2022-12-06 | 中国科学技术大学先进技术研究院 | Method, device and equipment for synthesizing magnetic field of multichannel magnetic resonance coil and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103930898B (en) | Program analysis/the service for checking credentials provides system and control method, program analysis/checking device, program analysis/verification tool managing device | |
| CN103760439B (en) | A kind of Auto-Test System of avionics system | |
| CN104281520B (en) | Tracking and method, the apparatus and system of debugging | |
| CN109902053A (en) | A kind of SPI communication method, terminal device and storage medium based on dual controller | |
| CN105306156A (en) | Remote sensing satellite data transmission product automatic testing system and method | |
| CN109655732B (en) | Method, platform, device and terminal for testing plates of nuclear power station reactor protection system | |
| CN103398863B (en) | Ground-based simulation and detection device for space TDICCD camera electronics system | |
| CN110518990A (en) | Calibration method, system and the computer readable storage medium of multiple antennas WiFi product | |
| US8667261B2 (en) | Systems, methods, and apparatus for utility meter configuration | |
| CN104462626A (en) | RFIF verification platform based on VMM verification methodology and implementation method | |
| CN202794492U (en) | Magnetic resonance echo signal simulator and simulation system | |
| CN104537766A (en) | Charge control electric energy meter checking system and method supporting prepayment encryption function of radio frequency card | |
| CN104198788A (en) | VNA (Vector Network Analyzer) multiplexing instrument and method | |
| CN113051149B (en) | Use case parameter generation method and device | |
| CN103592611A (en) | Magnetic resonance echo signal simulator and simulation system and signal processing method of magnetic resonance echo signal simulator | |
| CN102662617A (en) | Implementing method for VGA (video graphics array) signal switching in KVM (kernel-based virtual machine) | |
| CN204244262U (en) | Based on the consistency test device of IEC 61850 configuration file of NI CRIO platform | |
| CN105022290A (en) | Method for implementing multi-type oscilloscope centralized control system based on middleware | |
| CN103618853A (en) | Programmable simulation device and method for infrared focal plane device video output signal | |
| CN109918353B (en) | Method for automatically processing information and terminal equipment | |
| CN103402115B (en) | System for verifying high-speed image compressing code stream based on system on chip | |
| CN103616563B (en) | A kind of open type spectrometer receiving channel extension system | |
| CN110505088A (en) | Store the method and apparatus that authorize a change | |
| CN105681651A (en) | Embedded high speed real time scene image generation device | |
| CN115544622B (en) | Urban and rural participated three-dimensional planning design platform, method, equipment and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140219 |
|
| RJ01 | Rejection of invention patent application after publication |