CN106291511A - A kind of laser radar system multi-channel back wave signal adapting device - Google Patents
A kind of laser radar system multi-channel back wave signal adapting device Download PDFInfo
- Publication number
- CN106291511A CN106291511A CN201610915858.XA CN201610915858A CN106291511A CN 106291511 A CN106291511 A CN 106291511A CN 201610915858 A CN201610915858 A CN 201610915858A CN 106291511 A CN106291511 A CN 106291511A
- Authority
- CN
- China
- Prior art keywords
- voltage
- bnc connector
- output
- laser radar
- signal
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/491—Details of non-pulse systems
- G01S7/4912—Receivers
- G01S7/4913—Circuits for detection, sampling, integration or read-out
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/95—Lidar systems specially adapted for specific applications for meteorological use
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
The present invention provides a kind of laser radar system multi-channel back wave signal adapting device, including: N number of output BNC connector, each output BNC connector is respectively used to connect a photomultiplier tube and carries out a road signal output, wherein, N >=2；Trigger BNC connector, trigger BNC connector for being triggered signal by laser emission element to data acquisition unit output；Cable interface, cable interface is for being transmitted fluorescence echo-signal by grating spectrograph to computer；Display screen, the switch of the photomultiplier tube that display screen connects for showing N number of output BNC connector and sensitivity magnitude of voltage；M control key, control key is for the switch selected and regulate different channel photomultipliers and sensitivity magnitude of voltage, wherein, M >=2；Permutator, running voltage required when permutator is for adjusting laser radar internal dissimilar grating spectrograph work；Four hole power lines, four hole power lines, for providing running voltage for grating spectrograph, provide supply voltage and sensitivity voltage for photomultiplier tube.
Description
Technical field
The present invention relates to electric field, particularly relate to a kind of laser radar system multi-channel back wave signal adapting device.
Background technology
Sand Dust Aerosol can affect the radiation budget balance of ground vapour system by scattering and absorption solar shortwave radiation.With
Time, it is also possible to as ice-nucleus and cloud condensation nucl, change the microphysical property of cloud thus remote-effects weather.East Asia Region has generation
Second largest sand and dust source region in boundary, the Sand Dust Aerosol originating from the Takla Makan Desert and Gobi deserf is often borrowed winter and spring
Help orographic uplift and westerly jet condition by long-distance transmissions to Korean and Japanese, also can cross the Pacific Ocean and transmit to North America.It is being transmitted across
Cheng Zhong so that air quality on the way deteriorates, and drastically influence the healthy of people and quality of the life.When it falls to ocean
Time, it is also possible to provide mineral nutrition etc. for halomereid.In recent years, about Sand Dust Aerosol environmental effect and climatic effect
The research of aspect is the focus point of a lot of scholar all the time.
In the observation method of numerous Sand Dust Aerosols, laser radar is uniquely to provide the capable of its vertical stratification to set
Standby.Wherein, laser radar is that one has high time, spatial resolution, it is possible to Continuous Observation, can provide Atmospheric particulates physics
The advanced active remote sensing means of optical characteristics.It is research Atmospheric particulates environmental effect and climatic effect capable equipment it
One.Laser radar system is mainly made up of laser emission element, signal receiving unit and data acquisition unit three part.Laser is sent out
Penetrate unit by the radiating laser beams after beam-expanding collimation to air, after laser beam interacts with airborne particulate, backscatter signal
Converged by receiving unit.And then, according to the needs of actual detection content, it is divided into multiple detection to lead to the echo-signal of convergence
Road.Finally, completed to gather and storage by data acquisition unit after the photoelectric conversion section of each detection channels.It is as advanced person
Active remote sensing means, be widely used in the detection of atmospheric aerosol and cloud.At present, many units are had in the world
Ground Laser Radar Observation net has been set up with being organized in Different climate region.China's also existing many units develop different merit voluntarily
The laser radar system of energy, and in different websites observations.NORTHWEST CHINA area is the district that takes place frequently of sand and dust, by advanced laser radar
Understand and grasp during source region Sand Dust Aerosol and long-distance transmissions thereof the change of physical optics characteristic for studying its environment
Effect and climatic effect tool are of great significance.But, the Laser Radar Observation station that present stage NORTHWEST CHINA area is arranged
Point still rareness.
In conjunction with the rich experiences of the accumulation of laser radar Field observational experiment in spring the most for many years, and in the face of laser radar system
Development needs the practical problem solved so that we to signal receiving unit in laser radar system and data acquisition unit it
Between changeover section had deeper understanding.In spring Field observational experiment, for the dust event of varying strength, laser thunder
Reach the echo signal intensity of system, signal to noise ratio and detection and highly there is the biggest difference.In strong dust event, laser radar near field
Echo-signal strengthens, and overall detection height reduces, and signal to noise ratio more than sand and dust layer height is impacted greatly；Otherwise, echo-signal subtracts
Weak, detection is highly big, and signal to noise ratio is impacted little.Therefore, this is just to photoelectric conversion during laser radar detection difference dust event
The motility of link proposes requirement, and this motility is mainly reflected in the change of photodetector sensitivity voltage the most just
Prompt.At present, most of laser radar system that China uses is all from external import.But, when these laser radar systems are being visited
When surveying different aerosol event, change when needing of photodetector sensitivity voltage, then create the problem that (1) is most
The integrated level of laser radar system is high, and system structure is compact, has set the sensitivity voltage of photodetector when dispatching from the factory, and uses
Shi Wufa changes；(2) fraction of laser light radar can change sensitivity voltage, but it is installed in internal system, needs during change
Taking the relevant portion of radar system apart, operation is inconvenient for；(3) field sand and dust observation is carried out in NORTHWEST CHINA area, severe
Atmospheric environment exceedes its expected design to the loss that equipment produces, and shortens the life-span of equipment all parts.
In sum, it is designed to be favorably improved laser radar in the Sand Dust Aerosol observation of applicable NORTHWEST CHINA area return
The switching device of ripple signal element and data receipt unit is the most necessary.It is beneficial to laser radar system and participates in field sand and dust
The variation characteristic of Sand Dust Aerosol physical optics characteristic is preferably obtained during observation experiment.
Summary of the invention
It is contemplated that at least overcome one of drawbacks described above to provide a kind of laser radar system multi-channel back wave signal converting
Device, can not only effectively reduce laser radar development cost, and the echo-signal of multiple passage of simultaneously transferring, and according to
Actual detection needs individually to regulate each Channel-shifted efficiency.
For reaching above-mentioned purpose, technical scheme is specifically achieved in that
One aspect of the present invention provides a kind of laser radar system multi-channel back wave signal adapting device, including:
Arrange on panel: N number of output BNC connector, each output BNC connector is respectively used to connect a photomultiplier tube and carries out a road
Signal exports, wherein, and N >=2；Trigger BNC connector, trigger BNC connector for defeated to data acquisition unit by laser emission element
Go out to trigger signal；Cable interface, cable interface is for being transmitted fluorescence echo-signal by grating spectrograph to computer；Display screen,
The switch of the photomultiplier tube that display screen connects for showing N number of output BNC connector and sensitivity magnitude of voltage；M control key, control
Key processed is for the switch selected and regulate different channel photomultipliers and sensitivity magnitude of voltage, wherein, M >=2；Permutator,
Running voltage required when permutator is for adjusting laser radar internal dissimilar grating spectrograph work；Four hole power supplys
Line, four hole power lines, for providing running voltage for grating spectrograph, provide supply voltage and sensitivity electricity for photomultiplier tube
Pressure, wherein 1 hole is ground connection, and other 3 holes are respectively 5V, 1.1V and 110V；Or other 3 holes are respectively 5V, 1.1V and 220V.
It addition, N=6.
It addition, M=4, each control key is respectively Menu key, enter key and both direction key.
It addition, Menu key is used for selecting different menu, including: the first menu: the passage that N number of output BNC connector connects
Switch；Second menu: the sensitivity magnitude of voltage of the passage that N number of output BNC connector connects；Enter key, selected for determining
Menu item；Directionkeys, for changing the switch of passage that N number of output BNC connector connects, or N number of output BNC connector connect logical
The sensitivity magnitude of voltage in road.
It addition, control key is arranged on below display screen.
It addition, running voltage required during the work of dissimilar grating spectrograph is respectively 110V or 220V.
As seen from the above technical solution provided by the invention, the laser radar system multi-channel back wave that the present invention provides
Signal adapting device, the most effectively reduces development cost, improves the compactedness of system, and the returning of multiple passage of can simultaneously transferring
Ripple signal, and need independent regulation each Channel-shifted efficiency according to actual detection, improve the motility of system.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, required use in embodiment being described below
Accompanying drawing be briefly described, it should be apparent that, below describe in accompanying drawing be only some embodiments of the present invention, for this
From the point of view of the those of ordinary skill in field, on the premise of not paying creative work, it is also possible to obtain other according to these accompanying drawings
Accompanying drawing.
Fig. 1 shows for the structure in the laser radar system multi-channel back wave signal adapting device front that the embodiment of the present invention provides
It is intended to.
Detailed description of the invention
Below in conjunction with the accompanying drawings embodiments of the present invention are described in detail.
Seeing Fig. 1, the laser radar system multi-channel back wave signal adapting device providing the embodiment of the present invention is said
Bright, the present invention is the laser radar system multi-channel back wave signal adapting device that embodiment provides, including: arrange on the faceplate 10
:
N number of output BNC connector 101, each output BNC connector 101 is respectively used to connect a photomultiplier tube and carries out one
Road signal output, wherein, N >=2；
Trigger BNC connector 102, trigger BNC connector 102 for being triggered to data acquisition unit output by laser emission element
Signal；
Cable interface 103, cable interface 103 is for being transmitted fluorescence echo-signal by grating spectrograph to computer；
Display screen 104, the switch of the photomultiplier tube that display screen 104 connects for showing N number of output BNC connector 101 with
Sensitivity magnitude of voltage；
M control key 105, control key 105 is for the switch selected and regulate different channel photomultipliers and sensitivity
Magnitude of voltage, wherein, M >=2；
Permutator 106, permutator 106 is used for adjusting laser radar inside dissimilar grating spectrograph work time institute
The running voltage needed；
Four hole power lines 107, four hole power lines 107 are for providing running voltage for grating spectrograph, for photomultiplier tube
Thering is provided supply voltage and sensitivity voltage, wherein 1 hole is ground connection, and other 3 holes are respectively 5V, 1.1V and 110V；Or other 3 holes
It is respectively 5V, 1.1V and 220V.
As can be seen here, the laser radar system multi-channel back wave signal adapting device provided by the present invention, the most effectively
Reduction development cost, the compactedness of raising system, and the echo-signal of multiple passage of can simultaneously transferring, and according to actual detection
Need independent regulation each Channel-shifted efficiency, improve the motility of system.Wherein, due to dissimilar grating spectrograph work time
Required running voltage is respectively 110V or 220V, and therefore, permutator 106 could be arranged to as 110V, time is 220V,
It is mainly used in the adjustment of required running voltage during laser radar internal dissimilar grating spectrograph work, it is to avoid to grating spectrum
Instrument causes damage.
An optional embodiment as the embodiment of the present invention, it is preferred that N=6.To transfer six passages simultaneously
Echo-signal.
An optional embodiment as the embodiment of the present invention, it is preferred that M=4, each control key 105 is respectively dish
Singly-bound, enter key and both direction key.Use 4 buttons to be controlled, make number of keys on the premise of satisfied use
Few, reduce panel usable floor area.Wherein, Menu key is used for selecting different menu, including: the first menu: N number of output BNC connector
The switch of 101 passages connected；Second menu: the sensitivity magnitude of voltage of the passage that N number of output BNC connector 101 connects；Carriage return
Key, for determining selected menu item；Directionkeys, for changing the switch of the passage that N number of output BNC connector 101 connects, or
The sensitivity magnitude of voltage of the passage that N number of output BNC connector 101 connects.Such as: four buttons are for selecting and regulating different passages
The sensitivity magnitude of voltage of photomultiplier tube, can be followed successively by Menu key (Menu), enter key (Enter), and two from left to right
Directionkeys (<,>).Menu key (Menu) is used for selecting the different menu (switch of 1:6 passage of menu；2:6 passage of menu
Sensitivity magnitude of voltage)；Enter key (Enter) is for determining selected menu item；Directionkeys (<,>) is for changing 6 passages
Switch, or the sensitivity magnitude of voltage that 6 passages are respectively.
An optional embodiment as the embodiment of the present invention, it is preferred that control key 105 is arranged on display screen 104 times
Side.Thus conveniently viewing and use.
As can be seen here, the laser radar system multi-channel back wave signal adapting device provided by the embodiment of the present invention, main
Three below advantage to be had:
1, being arranged on after apparatus of the present invention are integrated on the casing of laser radar system, operation interface is convenient and swift.The most again
Effectively reduce the development cost of laser radar system；
2, the switching (such as 6) of multiple detection channels echo-signal can be realized simultaneously, and separate between each passage；
3, can according to actual detection demand, can flexible photodetector sensitivity voltage, and then regulation echo letter
Number intensity, detection height and signal to noise ratio.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or spy
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.And, the specific features of description, structure, material or feature can be any
One or more embodiments or example in combine in an appropriate manner.
Above embodiment is only to be described the preferred embodiment of the present invention, not carries out the scope of the present invention
Limiting, on the premise of designing spirit without departing from the present invention, this area ordinary skill technical staff is to technical scheme
The various deformation made and improvement, all should fall in the protection domain that claims of the present invention determines.
Claims (6)
1. a laser radar system multi-channel back wave signal adapting device, it is characterised in that including: arrange on panel:
N number of output BNC connector, each described output BNC connector is respectively used to connect a photomultiplier tube and carries out a road signal
Output, wherein, N >=2；
Triggering BNC connector, described triggering BNC connector is for being triggered signal by laser emission element to data acquisition unit output；
Cable interface, described cable interface is for being transmitted fluorescence echo-signal by grating spectrograph to computer；
Display screen, the switch of the photomultiplier tube that described display screen connects for showing N number of described output BNC connector and sensitivity
Magnitude of voltage；
M control key, described control key is used for selecting and regulating switch and the sensitivity magnitude of voltage of different channel photomultipliers,
Wherein, M >=2；
Permutator, work required when described permutator is for adjusting laser radar internal dissimilar grating spectrograph work
Make voltage；
Four hole power lines, described four hole power lines, for providing running voltage for grating spectrograph, provide electricity for photomultiplier tube
Source voltage and sensitivity voltage, wherein 1 hole is ground connection, and other 3 holes are respectively 5V, 1.1V and 110V；Or other 3 holes are respectively
5V, 1.1V and 220V.
Switching device the most according to claim 1, it is characterised in that described N=6.
Switching device the most according to claim 1 and 2, it is characterised in that described M=4, each control key is respectively menu
Key, enter key and both direction key.
Switching device the most according to claim 3, it is characterised in that
Described Menu key is used for selecting different menu, including: the first menu: opening of the passage that described N number of output BNC connector connects
Close；Second menu: the sensitivity magnitude of voltage of the passage that described N number of output BNC connector connects；
Described enter key, for determining selected menu item；
Described directionkeys, for changing the switch of the passage that described N number of output BNC connector connects, or described N number of output BNC connects
The sensitivity magnitude of voltage of the passage that head connects.
Switching device the most according to claim 4, it is characterised in that described control key is arranged on below described display screen.
Switching device the most according to claim 1, it is characterised in that required during the work of described dissimilar grating spectrograph
Running voltage be respectively 110V or 220V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610915858.XA CN106291511B (en) | 2016-10-21 | 2016-10-21 | A kind of laser radar system multi-channel back wave signal adapting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610915858.XA CN106291511B (en) | 2016-10-21 | 2016-10-21 | A kind of laser radar system multi-channel back wave signal adapting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106291511A true CN106291511A (en) | 2017-01-04 |
| CN106291511B CN106291511B (en) | 2019-06-11 |
Family
ID=57720069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610915858.XA Active CN106291511B (en) | 2016-10-21 | 2016-10-21 | A kind of laser radar system multi-channel back wave signal adapting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106291511B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112596075A (en) * | 2020-11-26 | 2021-04-02 | 兰州大学 | Multi-excitation-wavelength spectrometer type fluorescence laser radar system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011069067A1 (en) * | 2009-12-04 | 2011-06-09 | The Trustees Of Columbia University In The City Of New York | Spectral and temporal laser fluorescence analysis such as for natural aquatic environments |
| CN103412288A (en) * | 2013-07-01 | 2013-11-27 | 无锡华测电子系统有限公司 | All-solid-state X-band portable radar beacon machine and signal processing method thereof |
| CN104880711A (en) * | 2015-05-18 | 2015-09-02 | 中国科学院合肥物质科学研究院 | Single-wavelength four-Raman laser radar detection system and detection method |
| CN206892319U (en) * | 2016-10-21 | 2018-01-16 | 兰州大学 | A kind of laser radar system multi-channel back wave signal adapting device |
-
2016
- 2016-10-21 CN CN201610915858.XA patent/CN106291511B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011069067A1 (en) * | 2009-12-04 | 2011-06-09 | The Trustees Of Columbia University In The City Of New York | Spectral and temporal laser fluorescence analysis such as for natural aquatic environments |
| CN103412288A (en) * | 2013-07-01 | 2013-11-27 | 无锡华测电子系统有限公司 | All-solid-state X-band portable radar beacon machine and signal processing method thereof |
| CN104880711A (en) * | 2015-05-18 | 2015-09-02 | 中国科学院合肥物质科学研究院 | Single-wavelength four-Raman laser radar detection system and detection method |
| CN206892319U (en) * | 2016-10-21 | 2018-01-16 | 兰州大学 | A kind of laser radar system multi-channel back wave signal adapting device |
Non-Patent Citations (1)
| Title |
|---|
| 姜付彬: "雷达自动测试系统接口适配器的设计与应用", 《ELECTRONICS WORLD》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112596075A (en) * | 2020-11-26 | 2021-04-02 | 兰州大学 | Multi-excitation-wavelength spectrometer type fluorescence laser radar system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106291511B (en) | 2019-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Budnev et al. | TAIGA the Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy—present status and perspectives. | |
| Berezhnev et al. | The Tunka-133 EAS Cherenkov light array: status of 2011 | |
| CN103389488A (en) | Multi-source indoor positioning device and method based on light intensity | |
| CN203688825U (en) | Automatic weather station | |
| CN107499164A (en) | Unmanned plane charging system and charging method based on laser | |
| CN205788003U (en) | A kind of photovoltaic power generation control system and photovoltaic generating system | |
| CN107356939A (en) | High-low altitude double-receiving ozone differential absorption laser radar device | |
| Belolaptikov et al. | Neutrino telescope in lake Baikal: Present and nearest future | |
| Budnev et al. | TAIGA experiment: present status and perspectives | |
| CN106291511A (en) | A kind of laser radar system multi-channel back wave signal adapting device | |
| CN206892319U (en) | A kind of laser radar system multi-channel back wave signal adapting device | |
| Hofmann et al. | Status of the HESS project | |
| CN108458751B (en) | Multi-parameter measurement system based on remote power supply and wireless data transmission | |
| CN113189633B (en) | Medium and high energy particle detector | |
| Budnev et al. | The Tunka-133 EAS Chrenkov array-status, first results and plans | |
| Zech et al. | SST-GATE: A dual mirror telescope for the Cherenkov Telescope Array | |
| Moderski et al. | 4 m Davies-Cotton telescope for the Cherenkov Telescope Array | |
| Labrador et al. | Silica Aerogel Cherenkov Counters for the Isotope Matter-Antimatter Experiment | |
| Attia et al. | Sizing photovoltaic systems during early design a decision tool for architects | |
| CN105468032B (en) | A kind of Stellar orientation instrument structure for round-the-clock Star navigation system | |
| Taylor | Instrumentation and Commissioning of the Prototype Schwarzschild-Couder Telescope Camera | |
| Abreu et al. | The Pierre Auger Observatory IV: Operation and Monitoring | |
| Mende et al. | Observations of Earth space by self-powered stations in Antarctica | |
| CN204807473U (en) | Cleanliness detecting system of photovoltaic power plant photovoltaic board | |
| Schumacher | Exploring silicon photomultipliers for the upgrade of the Pierre Auger observatory |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Huang Zhongwei Inventor after: Zhou Tian Inventor after: Huang Jianping Inventor after: Shi Jinsen Inventor before: Zhou Tian Inventor before: Huang Zhongwei Inventor before: Huang Jianping Inventor before: Shi Jinsen |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |