CN203551615U - Hand-held photoelectric transformer simulator - Google Patents
Hand-held photoelectric transformer simulator Download PDFInfo
- Publication number
- CN203551615U CN203551615U CN201320645785.9U CN201320645785U CN203551615U CN 203551615 U CN203551615 U CN 203551615U CN 201320645785 U CN201320645785 U CN 201320645785U CN 203551615 U CN203551615 U CN 203551615U
- Authority
- CN
- China
- Prior art keywords
- digital signal
- hand
- held
- mutual inductor
- module
- 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.)
- Expired - Lifetime
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 53
- 230000003993 interaction Effects 0.000 claims abstract description 13
- 238000012545 processing Methods 0.000 claims abstract description 11
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 10
- 239000013307 optical fiber Substances 0.000 claims abstract description 9
- 238000012546 transfer Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 16
- 230000005622 photoelectricity Effects 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 7
- 241000272814 Anser sp. Species 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 239000005304 optical glass Substances 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 14
- 238000004088 simulation Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The utility model relates to a hand-held photoelectric transformer simulator, and is characterized in that the hand-held photoelectric transformer simulator comprises an optical digital signal output module, an optical digital signal input module, an FPGA logic control module, a DSP data calculating and signal processing module, a CPU human-computer interaction module and a power supply and management module; and the optical digital signal output module comprises multipath serial optical digital signal output interfaces so as to respectively output optical digital messages in accord with frame formats of a signal-phase voltage current transformer, a three-phase voltage transformer, a three-phase current transformer and a three-phase voltage current transformer, and to output an optical digital message in accord with a voltage collector cascading frame format. The hand-held photoelectric transformer simulator can simulate that an electronic transformer, an optical fiber transformer and a magneto-optical glass transformer output optical digital signals to an MU or an intelligent assembly, and the MU or the intelligent assembly, and a relay protection device can be tested integratedly; the hand-held photoelectric transformer simulator can receive the optical digital messages emitted from the transformers, and analyze and forward the messages; and the hand-held photoelectric transformer simulator is powered by a lithium battery, and is light in weight, small in size and portable.
Description
Technical field
The utility model relates to a kind of intelligent grid testing apparatus; relate in particular to and be applicable to the hand-held photoelectrical mutual inductor analog meter that intelligent substation is used; can simulation electronic mutual inductor, optical fiber mutual inductor, magneto-optic glass formula mutual inductor output light digital signal, realize the joint test of merge cells or intelligent assembly, protective relaying device, intelligent terminal.
Background technology
Intelligent substation adopts photo-electricity mutual-inductor to replace traditional electromagnetic transformer more, comprise electronic mutual inductor, optical fiber type mutual inductor, magneto-optic glass formula mutual inductor etc., have that volume is little, lightweight, floor area is few, insulation is simple, without features such as resonance and magnetic saturation phenomenons, be the developing direction of following mutual inductor.Photo-electricity mutual-inductor will send merge cells (MU) to through the serial optical digital signal of collector output, and merge cells unpacks, processes and re-groups package data, then is sent to protective device by IEC61850-9-1/2 or IEC60044-8 stipulations.
At present the method for testing of general protective relaying device is to adopt light digital relay protection tester simulation MU output, directly to relay holding device, sends sampling value message, can simulate the faults such as short circuit and realize the test of the various functions of relay protection.The prominent question that this method of testing exists is, test specification does not comprise MU, thereby cannot test and the working condition of definite MU, and when adopting the pattern of intelligent assembly, merge cells and intelligent terminal unite two into one, and also cannot test the working condition of intelligent terminal.MU and intelligent assembly are emerging intelligent electronic devices (IED) in intelligent substation, and its operation and maintenance experience is all also short of very much, the intelligent substation situation of having moved from scene, and the probability that MU and intelligent assembly go wrong is still larger.Therefore be necessary to realize the integrated testing of merge cells or intelligent assembly and protective relaying device.
Summary of the invention
For solving the problems of the technologies described above, the utility model provides a kind of hand-held photoelectrical mutual inductor analog meter, comprise: light digital signal output modules, light digital signal load module, fpga logic control module, the calculating of DSP data and signal processing module, CPU human-computer interaction module, power supply and administration module, wherein:
Described smooth digital signal output modules, comprises that multi-path serial light digital signal output interface is to export respectively the light numeral message that meets single-phase voltage current transformer, threephase potential transformer, threephase current transformer, three-phase voltage current mutual inductor frame format and voltage collector cascade frame format;
Described smooth digital signal load module, comprises serial optical digital signal and light IRIG-B code clock signal that 1 tunnel serial optical digital signal input interface sends with input photo-electricity mutual-inductor;
Described fpga logic control module comprises serial optical pulse control submodule, transmission mode control submodule, transfer rate control submodule, the method of synchronization or asynchronous system that the serial optical digital signal that described transmission mode control submodule sends or receives described hand-held photoelectrical mutual inductor analog meter is used are selected and control, and described transfer rate control submodule is selected and controls the transfer rate of serial optical digital signal;
Described DSP data are calculated and signal processing module, comprising that data are calculated with generating submodule, data group bag unpacks submodule to carry out corresponding instantaneous value calculating according to the effective value of input and carry out message group package and unpack by the frame format arranging, and corresponding information is sent to described CPU human-computer interaction module shows;
Described CPU human-computer interaction module, comprises that parameter arranges submodule and man-machine interaction submodule with the transfer rate to light digital signal and frame format is selected and the electric current and voltage corresponding voltage of instantaneous message value to described hand-held photoelectrical mutual inductor analog meter output and/or amplitude, phase angle, frequency and the status switch thereof of electric current arrange;
Described power supply and administration module comprise lithium battery and charge-discharge control circuit, and electric weight and charge condition by charge-discharge control circuit to lithium battery are monitored, and by lithium battery, described hand-held photoelectrical mutual inductor analog meter are powered.
In technique scheme, serial optical digital signal output interface comprises respectively and sends optical module and phy interface chip described in every road; Described serial optical digital signal input interface comprises reception optical module and phy interface chip.
In technique scheme, described fpga logic control module consists of XilinxSpartan-6 logic control chip and corresponding auxiliary circuit; Described DSP data are calculated with signal processing module and are consisted of TMS320C64xDSP and corresponding auxiliary circuit.
In technique scheme, under the control of described transfer rate control submodule, described in every road, serial optical digital signal output interface can, by the transfer rate output light digital signal of 2.5Mbps, 5Mbps, can be exported light digital signal by the transfer rate of 2Mbps, 4Mbps, 6Mbps, 8Mbps under synchronous mode under asynchronous mode.
In technique scheme, described serial optical digital signal output interface is connected to merge cells through optical fiber, to described merge cells, sends sampled value light numeral message; Described merge cells sends the sampling value message that meets IEC61850-9-2 standard to light Digital Relay Protection Appliance.
In technique scheme, described serial optical digital signal output interface is connected to intelligent assembly through optical fiber, to described intelligent assembly, sends sampled value light numeral message; Described intelligent assembly sends the sampling value message and the GOOSE signal that meet IEC61850-9-2 standard to protective relaying device.
In technique scheme, described intelligent assembly comprises merge cells and intelligent terminal.
In technique scheme, described hand-held photoelectrical mutual inductor analog meter also comprises hand-held outer case, is further provided with keyboard, LCDs, SD card interface and charging inlet on described hand-held outer case.
In technique scheme, described serial optical digital signal output interface and described serial optical digital signal input interface are arranged on described hand-held outer case.
In technique scheme, the described SD card of storing for the photo-electricity mutual-inductor message holding receiving.
The utility model has been obtained following technique effect:
Hand-held photoelectrical mutual inductor analog meter in the utility model, with respect to digital relay protection tester, adopts lithium battery power supply, and lightweight, volume is little, is easy to carry.
This hand-held photoelectrical mutual inductor analog meter has 4 transmissions, 1 reception serial optical interface; can simulation electronic mutual inductor, optical fiber mutual inductor, magneto-optic glass mutual inductor output light digital signal be to MU or intelligent assembly; realize the integrated testing of MU or intelligent assembly, protective relaying device; can receive the light numeral message that mutual inductor sends, carry out message analysis and message repeating simultaneously.
Accompanying drawing explanation
Fig. 1 hand-held photoelectrical mutual inductor analog meter test connection layout;
The hand-held photoelectrical mutual inductor analog meter test connection layout of Fig. 2 based on intelligent assembly;
Fig. 3 hand-held photoelectrical mutual inductor analog meter principle assumption diagram;
Fig. 4 hand-held photoelectrical mutual inductor analog meter schematic appearance.
Embodiment
For the ease of those of ordinary skills, understand and implement the utility model, below in conjunction with the drawings and the specific embodiments, the utility model being described in further detail.
The test connection layout of the hand-held photoelectrical mutual inductor analog meter that the utility model provides as shown in Figure 1, hand-held photoelectrical mutual inductor analog meter 101 can analog photoelectricity mutual inductor to merge cells 102(MU) output serial optical digital signal, the output of hand-held photoelectrical mutual inductor analog meter 101 is connected to merge cells 102 through optical fiber, to merge cells 102, sends sampled value (SMV) light numeral message.Merge cells 102 is exported sampled value (SMV) message that meets IEC61850-9-2 standard to light Digital Relay Protection Appliance 103; light Digital Relay Protection Appliance 103 receives the circuit breaker position GOOSE signal that intelligent terminal 104 is sent; meanwhile, the trip signal of protection is sent to intelligent terminal 104 in the mode of GOOSE message.
The test connection layout based on intelligent assembly of the hand-held photoelectrical mutual inductor analog meter that the utility model provides as shown in Figure 2, now, merge cells (MU) unites two into one with intelligent terminal, its function realizes in a device, in intelligent assembly 105, realizes the function of merge cells and intelligent terminal.Hand-held photoelectrical mutual inductor analog meter 101 analog photoelectricity mutual inductor output serial optical digital sample values (SMV) messages are to intelligent assembly 105; intelligent assembly 105 sends sampled value (SMV) message and the GOOSE signal that meet IEC61850-9-2 standard to protective relaying device, receive the trip signal that protective relaying device is sent with GOOSE message mode simultaneously.
The hand-held photoelectrical mutual inductor analog meter that the utility model provides as shown in Figure 3, comprises light digital signal output modules 220, light digital signal load module 230, fpga logic control module 240, the calculating of DSP data and signal processing module 250, CPU human-computer interaction module 260, power supply and administration module 200.
Light digital signal output modules 220, comprises 4 tunnel serial optical digital signal output interfaces, and every road serial optical digital signal output interface mainly comprises that one sends optical module, a phy interface chip.4 tunnel serial optical digital signal output interfaces, can meet in accordance with the output of the standard DL/T282-2012 of State Grid Corporation of China merge cells technical conditions the light numeral message of single-phase voltage current transformer, threephase potential transformer, threephase current transformer, three-phase voltage current mutual inductor frame format, the also light of exportable voltage collector cascade frame format numeral message.
Light digital signal load module 230, comprises 1 tunnel serial optical digital signal input interface, mainly by receiving optical module and phy interface chip, forms.Can scan the synchronous or asynchronous serial light digital signal that photo-electricity mutual-inductor sends, and from serial delivery outlet, be sent to merge cells or intelligent assembly by its frame format, by the frame format that receives signal, carry out message repeating and signal analysis.Simultaneously, this serial optical digital signal input interface also can receive light IRIG-B code clock signal, by the GPS triggered time is set, realizes the synchronous triggering of many analog meters, make many analog meters output signal platform merge cells or intelligent assembly at the most simultaneously, synchronously start test.
Fpga logic control module 240, Spartan-6 logic control chip and the auxiliary circuit by Xilinx company, produced form, and mainly comprise serial optical pulse control submodule 241, transmission mode control submodule 242, transfer rate control submodule 243.The method of synchronization or asynchronous system that the serial optical digital signal that transmission mode control submodule 242 sends or receives hand-held photo-electricity mutual-inductor analog meter is used are selected and control, according to the parameter of the setting of interface input, control output synchronously or asynchronous optical serial pulses.Transfer rate control submodule 243 is selected and controls the transfer rate of serial optical digital signal, the transfer rate of serial pulses can, by 2.5Mbps, 5Mbps, can be transmitted by 2Mbps, 4Mbps, 6Mbps, 8Mbps as required under synchronous mode under asynchronous mode.
DSP data are calculated and signal processing module 250,32 Floating-point DSP TMS320C64x and auxiliary circuit, consist of, and comprise that data are calculated and generation submodule 251, data group bag unpack submodule 252.Under sending mode, DSP data are calculated and according to parameters, are calculated the 4kHz～12.8kHz sampling rate down-sampling point value that needs output with signal processing module 250, can carry out short circuit calculation according to the failure mode arranging, and 4 kinds of frame formats in accordance with regulations package.Under receiving mode, DSP data are calculated with signal processing module 250 message are unpacked, and extract the each point value of sampled value, above deliver to CPU human-computer interaction module 260 and show.
CPU human-computer interaction module 260, is comprised of the input-output unit including touch-screen and sub controlling unit, comprises that parameter arranges submodule 261, man-machine interaction submodule 262.By the man-machine interface on input-output unit, required different transmission rates can be set, select required frame format, also there is electric current and voltage output function and status switch output function simultaneously, electric current and voltage can be by the instantaneous message value of effective value output voltage electric current of input, and amplitude in output procedure, phase angle, frequency can be by the step change arranging.Status switch function, can arrange at most 10 states, between state, switches and can be set to manual switchover, two kinds of patterns of time-switching, can carry out short circuit calculation and fault simulation simultaneously.
Power supply and administration module 200 are responsible for powering to whole device, comprise lithium battery and the charge-discharge control circuit of power supply, and electric weight and charge condition by charge-discharge control circuit to lithium battery are monitored.
As shown in Figure 4, it comprises plain type keyboard 301,4.3 cun of color LCD screens 302, serial optical transmission interface 303, serial optical receiving interface 304, hand-held outer case 305 and SD card interfaces 306, charging inlet 307 to the outward appearance of the hand-held photoelectrical mutual inductor analog meter that the utility model provides.The SD card holding in SD card interface 306 can be stored the photo-electricity mutual-inductor message receiving.
Above embodiment is only a kind of embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.Its concrete structure and size can be adjusted according to actual needs accordingly.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (10)
1. a hand-held photoelectrical mutual inductor analog meter, it is characterized in that comprising: light digital signal output modules, light digital signal load module, fpga logic control module, the calculating of DSP data and signal processing module, CPU human-computer interaction module, power supply and administration module, wherein:
Described smooth digital signal output modules, comprises that multi-path serial light digital signal output interface is to export respectively the light numeral message that meets single-phase voltage current transformer, threephase potential transformer, threephase current transformer, three-phase voltage current mutual inductor frame format and voltage collector cascade frame format;
Described smooth digital signal load module, comprises serial optical digital signal and light IRIG-B code clock signal that 1 tunnel serial optical digital signal input interface sends with input photo-electricity mutual-inductor;
Described fpga logic control module comprises serial optical pulse control submodule, transmission mode control submodule, transfer rate control submodule, the method of synchronization or asynchronous system that the serial optical digital signal that described transmission mode control submodule sends or receives described hand-held photoelectrical mutual inductor analog meter is used are selected and control, and described transfer rate control submodule is selected and controls the transfer rate of serial optical digital signal;
Described DSP data are calculated and signal processing module, comprising that data are calculated with generating submodule, data group bag unpacks submodule to carry out corresponding instantaneous value calculating according to the effective value of input and carry out message group package and unpack by the frame format arranging, and corresponding information is sent to described CPU human-computer interaction module shows;
Described CPU human-computer interaction module, comprises that parameter arranges submodule and man-machine interaction submodule with the transfer rate to light digital signal and frame format is selected and the electric current and voltage corresponding voltage of instantaneous message value to described hand-held photoelectrical mutual inductor analog meter output and/or amplitude, phase angle, frequency and the status switch thereof of electric current arrange;
Described power supply and administration module comprise lithium battery and charge-discharge control circuit, and electric weight and charge condition by charge-discharge control circuit to lithium battery are monitored, and by lithium battery, described hand-held photoelectrical mutual inductor analog meter are powered.
2. hand-held photoelectrical mutual inductor analog meter according to claim 1, is characterized in that, serial optical digital signal output interface comprises respectively and sends optical module and phy interface chip described in every road; Described serial optical digital signal input interface comprises reception optical module and phy interface chip.
3. hand-held photoelectrical mutual inductor analog meter according to claim 2, is characterized in that, described fpga logic control module consists of XilinxSpartan-6 logic control chip and corresponding auxiliary circuit; Described DSP data are calculated with signal processing module and are consisted of TMS320C64xDSP and corresponding auxiliary circuit.
4. hand-held photoelectrical mutual inductor analog meter according to claim 3, it is characterized in that, under the control of described transfer rate control submodule, described in every road, serial optical digital signal output interface can, by the transfer rate output light digital signal of 2.5Mbps, 5Mbps, can be exported light digital signal by the transfer rate of 2Mbps, 4Mbps, 6Mbps, 8Mbps under synchronous mode under asynchronous mode.
5. hand-held photoelectrical mutual inductor analog meter according to claim 4, is characterized in that, described serial optical digital signal output interface is connected to merge cells through optical fiber, to described merge cells, sends sampled value light numeral message; Described merge cells sends the sampling value message that meets IEC61850-9-2 standard to light Digital Relay Protection Appliance.
6. hand-held photoelectrical mutual inductor analog meter according to claim 4, is characterized in that, described serial optical digital signal output interface is connected to intelligent assembly through optical fiber, to described intelligent assembly, sends sampled value light numeral message; Described intelligent assembly sends the sampling value message and the GOOSE signal that meet IEC61850-9-2 standard to protective relaying device.
7. hand-held photoelectrical mutual inductor analog meter according to claim 6, is characterized in that, described intelligent assembly comprises merge cells and intelligent terminal.
8. hand-held photoelectrical mutual inductor analog meter according to claim 7, it is characterized in that, described hand-held photoelectrical mutual inductor analog meter also comprises hand-held outer case, is further provided with keyboard, LCDs, SD card interface and charging inlet on described hand-held outer case.
9. hand-held photoelectrical mutual inductor analog meter according to claim 8, is characterized in that, described serial optical digital signal output interface and described serial optical digital signal input interface are arranged on described hand-held outer case.
10. hand-held photoelectrical mutual inductor analog meter according to claim 9, is characterized in that, the described SD card of storing for the photo-electricity mutual-inductor message holding receiving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320645785.9U CN203551615U (en) | 2013-10-21 | 2013-10-21 | Hand-held photoelectric transformer simulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320645785.9U CN203551615U (en) | 2013-10-21 | 2013-10-21 | Hand-held photoelectric transformer simulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203551615U true CN203551615U (en) | 2014-04-16 |
Family
ID=50469712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320645785.9U Expired - Lifetime CN203551615U (en) | 2013-10-21 | 2013-10-21 | Hand-held photoelectric transformer simulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203551615U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084757A (en) * | 2017-03-29 | 2017-08-22 | 国家电网公司 | One kind protection passage special detector |
| CN107450042A (en) * | 2017-09-21 | 2017-12-08 | 国家电网公司 | A kind of current transformer detecting system |
| CN109495172A (en) * | 2019-01-12 | 2019-03-19 | 泰瑞创通讯(成都)有限公司 | Optical module error code handheld meter |
-
2013
- 2013-10-21 CN CN201320645785.9U patent/CN203551615U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084757A (en) * | 2017-03-29 | 2017-08-22 | 国家电网公司 | One kind protection passage special detector |
| CN107450042A (en) * | 2017-09-21 | 2017-12-08 | 国家电网公司 | A kind of current transformer detecting system |
| CN107450042B (en) * | 2017-09-21 | 2023-07-04 | 国家电网公司 | Current transformer detecting system |
| CN109495172A (en) * | 2019-01-12 | 2019-03-19 | 泰瑞创通讯(成都)有限公司 | Optical module error code handheld meter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202975289U (en) | Photovoltaic grid connected inverter automatic testing platform | |
| CN103713214A (en) | Intelligent transformer station relay protection closed loop test system | |
| CN103151839B (en) | Intelligent substation test research system | |
| CN103472433B (en) | Intelligent substation electric energy measuring secondary system virtual load error detection device and method | |
| CN103545926B (en) | A kind of distributed power source grid connection interface device | |
| CN205160090U (en) | Incessant little electric wire netting grid -connected interface integrated device of stable state has | |
| CN106814263A (en) | A kind of grid-connected detecting system of HWIL simulation and method | |
| CN203352295U (en) | Intelligent terminal of rural network direct distribution station | |
| CN203178388U (en) | Micro-grid test platform based on RTDS (Real Time Digital Simulator) | |
| CN209624731U (en) | One or two fusion panel switches integration transmission agency detection systems | |
| CN203551615U (en) | Hand-held photoelectric transformer simulator | |
| CN103683507A (en) | Distributed generation micro-grid control and electric energy quality monitoring integrated device and method | |
| CN201392392Y (en) | Experiment tester of pare power automatic switching device | |
| CN201374500Y (en) | Intelligent power distribution cabinet | |
| CN202057747U (en) | Intelligent secondary circuit vector analyzer | |
| CN204271609U (en) | 10kV intelligent subscriber boundary switch controller | |
| CN202976623U (en) | Simulation demonstration device used for training remote electrical load control | |
| CN206696420U (en) | A kind of test supply unit of three-phase electric energy meter false wiring | |
| CN102694418B (en) | Alternating-current distribution intelligent monitoring system | |
| CN103337905A (en) | Digitalized protection and measuring/control device integrated with metering function | |
| CN103136999B (en) | Simulation demonstrator used for training remote electric load control function | |
| CN102866310B (en) | Flexible simulation test platform for circuit protection device of power system | |
| CN203086118U (en) | 10kV cable network feeder automation device | |
| CN202206127U (en) | Micro grid relay protective apparatus | |
| CN206161803U (en) | Take accuse circuit breaker automatic opening/closing switching test equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |