CN107314812A - Field lighting tester - Google Patents
Field lighting tester Download PDFInfo
- Publication number
- CN107314812A CN107314812A CN201710686609.2A CN201710686609A CN107314812A CN 107314812 A CN107314812 A CN 107314812A CN 201710686609 A CN201710686609 A CN 201710686609A CN 107314812 A CN107314812 A CN 107314812A
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- CN
- China
- Prior art keywords
- photoelectric sensor
- collection plate
- data collection
- field lighting
- trolley
- 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.)
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- 238000005286 illumination Methods 0.000 claims abstract description 25
- 230000001133 acceleration Effects 0.000 claims abstract description 13
- 238000013480 data collection Methods 0.000 claims description 25
- 239000000523 sample Substances 0.000 claims description 25
- 238000004458 analytical method Methods 0.000 claims description 18
- 238000013500 data storage Methods 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000005375 photometry Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- FNMKZDDKPDBYJM-UHFFFAOYSA-N 3-(1,3-benzodioxol-5-yl)-7-(3-methylbut-2-enoxy)chromen-4-one Chemical compound C1=C2OCOC2=CC(C2=COC=3C(C2=O)=CC=C(C=3)OCC=C(C)C)=C1 FNMKZDDKPDBYJM-UHFFFAOYSA-N 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000005021 gait Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/04—Optical or mechanical part supplementary adjustable parts
- G01J1/06—Restricting the angle of incident light
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The present invention proposes a kind of field lighting tester, using the structure of stroller, can facilitate in outdoor traveling, and gathers related data, is adapted to the illumination photometry of the outdoor sports such as industrial traffic, physical culture and square illumination；By setting 3 axle acceleration sensors, balance adjustment control panel and electric pushrod, the level inclination of photoelectric sensor can be detected in real time, photoelectric sensor is kept horizontal level；Encoder is set, trolley operating range can be detected in real time, it is automatic to calculate place space brightness value, electronic compass is set, can in real time detect and show the orientation of photoelectric sensor and the track of trolley traveling, facilitate operating personnel's automatic adjustment and calibration.
Description
Technical field
The present invention relates to illumination test equipment, more particularly to a kind of field lighting tester.
Background technology
In order in the Lighting Design in outdoor work place, implement law, regulation and the techno-economic policy of country, meet
Outdoor work place function, be conducive to visual task, euphorosia and improve operating efficiency, accomplish advanced technology, economical rationality,
It is convenient using safety, maintenance management, implement green illumination, work out related place lighting criteria.Measurement to field lighting refers to
Mark includes luminous flux, luminous intensity, brightness, illumination, maintenance average illumination etc., and wherein illuminance standard level refers to maintain average illumination
Value, that is, provide surface on average illumination must not be less than some numerical value, it be at the time of lighting device must be safeguarded,
The average illumination on surface is provided, this is to ensure illumination during work required for visual security and visual performance.
For the measurement of the average illumination on regulation surface, measurement plane is typically divided into the grid of square,
Grid intersection tests illumination, then by the luminance calculation average illumination of multiple grid intersections.It is conventionally employed to draw grid on the ground
Line, again hand hold transducer measure the mode of each grid intersection illumination, and measurement efficiency is low, for industrial traffic, physical culture and square
The illumination photometry illuminated Deng outdoor sports, it is difficult to be applicable.
The content of the invention
In view of this, the present invention proposes a kind of field lighting tester for efficiently, accurately measuring field lighting.
The technical proposal of the invention is realized in this way：The invention provides a kind of field lighting tester, it includes hand
Stroller, the trolley includes handrail, turning-bar, front-wheel, two trailing wheels, chassis, electric pushrod, trailing wheel rotating shaft and two connecting rods, turns
It is rotatably connected and is fixed with handrail in the horizontal direction with front-wheel to bar, turning-bar is rotatably connected with chassis along vertical,
Two trailing wheels are rotatably connected with horizontally disposed trailing wheel rotating shaft respectively, are fixed with two connecting rods in trailing wheel rotating shaft, two connecting rods respectively with
Chassis and electric pushrod are hinged, and electric pushrod one end is hinged with chassis, in addition to the control of probe data collection plate, balance adjustment
Plate, data storage analysis plates and host computer, between probe data collection plate, balance adjustment control panel, data storage analysis plates
Connected using CAN signal, data storage analysis plates are connected with host computer signal, wherein,
Probe data collection plate, including photoelectric sensor and 3 axle acceleration sensors, photoelectric sensor collection illumination number
According to 3 axle acceleration sensors obtain the level inclination of photoelectric sensor；
Balance adjustment control panel, the level inclination fed back according to probe data collection plate adjusts electric pushrod, makes photoelectric transfer
Sensor keeps horizontal level；
Data storage analysis plates, store gathered data, and do corresponding data processing and inversion, while being set up with host computer
Connect machine and transmit data；
Host computer, is calculated and output field ground space brightness value according to the illumination data that collects.
On the basis of above technical scheme, it is preferred that also including vertically disposed expansion link, two ends connect steering respectively
Bar and probe data collection plate.
On the basis of above technical scheme, it is preferred that also including horizontally disposed swingle, described swingle one end with
Turning-bar is hinged in the horizontal direction, and the other end is connected with probe data collection plate.
On the basis of above technical scheme, it is preferred that the signal conditioner uses four and half precision.
On the basis of above technical scheme, it is preferred that the probe data collection plate includes five photoelectric sensors, also
Including the first arm processor, five photoelectric sensors are set along upper, left, right, front and rear direction respectively, five photoelectric sensors, 3
Axle acceleration sensor is connected with the first arm processor signal respectively, and the first arm processor is connected with CAN signal.
On the basis of above technical scheme, it is preferred that the data storage analysis plates include encoder, electronic compass,
Second arm processor and memory, wherein,
Encoder, detects trolley operating range；
Electronic compass, detects the orientation of photoelectric sensor and the track of trolley traveling；
Second arm processor, is connected with encoder, electronic compass, memory and CAN signal respectively.
It is further preferred that the electronic compass uses triaxial testing system HMC5883L.
The field lighting tester of the present invention has the advantages that relative to prior art：
(1) it using the structure of stroller, can facilitate in outdoor traveling, and gather related data, be adapted to industrial traffic, physical culture
And the illumination photometry of the outdoor sports such as square illumination；
(2) by setting 3 axle acceleration sensors, balance adjustment control panel and electric pushrod, photoelectricity can be detected in real time
The level inclination of sensor, makes photoelectric sensor keep horizontal level；
(3) encoder is set, trolley operating range can be detected in real time, it is automatic to calculate place space brightness value,
Electronic compass is set, can in real time detect and show the orientation of photoelectric sensor and the track of trolley traveling, facilitate operator
Member's automatic adjustment and calibration.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structure chart of field lighting tester of the present invention；
Fig. 2 is the structure chart of probe data collection plate of the present invention；
Fig. 3 is the signal annexation block diagram of field lighting tester of the present invention；
Fig. 4 is the signal annexation block diagram of the probe data collection plate of field lighting tester of the present invention；
Fig. 5 is the signal annexation block diagram of the data storage analysis plates of field lighting tester of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in embodiment of the present invention, the technical scheme in embodiment of the present invention is carried out clear
Chu, it is fully described by, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole realities
Apply mode.Based on the embodiment in the present invention, those of ordinary skill in the art institute under the premise of creative work is not made
The every other embodiment obtained, belongs to the scope of protection of the invention.
As shown in figure 1, with reference to Fig. 3, field lighting tester of the invention, it includes trolley 1, probe data collection plate
2nd, balance adjustment control panel 3, data storage analysis plates 4 and host computer 5.
The trolley 1 provide probe data collection plate 2, balance adjustment control panel 3, data storage analysis plates 4 and on
The vehicular platform of position machine 5, except the small handcart of the present embodiment, it would however also be possible to employ existing small handcart structure.It include handrail 11,
Turning-bar 12, front-wheel 13, two trailing wheels 14, chassis 15, electric pushrod 16, the connecting rod 18 of trailing wheel rotating shaft 17 and two.
As direction controlling part, turning-bar 12 is rotatably connected and fixed with handrail 11 in the horizontal direction with front-wheel 13,
Turning-bar 12 is rotatably connected with chassis 15 along vertical, in this way, passing through rotary handle 11, you can change the advance of front-wheel 13
Direction.
Trolley 1 during the traveling of place, is influenceed, vehicle body has certain angle and trembled by accident of terrain at the scene
It is dynamic.In order to make vehicle body holding level as far as possible, two trailing wheels 14 are rotatably connected with horizontally disposed trailing wheel rotating shaft 17 respectively, rear rotation
Two connecting rods 18 are fixed with axle 17, two connecting rods 18 are hinged with chassis 15 and electric pushrod 16 respectively, the one end of electric pushrod 16 and bottom
Disk 15 is hinged.In this way, by the flexible i.e. adjustable terrain clearance of chassis 15 of electric pushrod 16, making the holding level of chassis 15.
As shown in figure 3, using CAN between probe data collection plate 2, balance adjustment control panel 3, data storage analysis plates 4
Bus signals are connected, and data storage analysis plates 4 are connected with the signal of host computer 5.
Probe data collection plate 2, including the axle acceleration sensor 22 of photoelectric sensor 21 and 3, photoelectric sensor 21 are gathered
Illumination data, 3 axle acceleration sensors 22 obtain the level inclination of photoelectric sensor 21.Specifically, for the photograph of high empty position
Degree measurement, in addition to vertically disposed expansion link 19, two ends connect turning-bar 12 and probe data collection plate 2 respectively.For by
The illumination photometry of position near the ground, in addition to horizontally disposed swingle 20, described one end of swingle 20 and turning-bar 12 are along water
Square to being hinged, the other end is connected with probe data collection plate 2.Specifically, the structure of probe data collection plate 2 such as Fig. 4 institutes
Show, it includes five photoelectric sensors 21, in addition to the first arm processor 23, five photoelectric sensors 21 respectively along it is upper, left,
Right, front and rear direction is set, five photoelectric sensors 21,3 axle acceleration sensors 22 respectively with the signal of the first arm processor 23
Connection, the first arm processor 23 is connected with CAN signal.In this way, the light of 5 directions on any fixed position can be realized
According to detection.For photoelectric sensor 21 it is converted come signal, by programmable amplifying circuit, at AD sampling units and the first ARM
The calculation process of device 23 is managed, real-time illumination value is obtained.Respectively obtain 100 times for the photoelectric sensor 21 in 5 orientation and adopt
Sample data simultaneously analyze disturbance therein, filter out and are averaged after maximin, so as to obtain closing on each photoelectric sensor 21
Suitable instant photometric data, this data are transferred to data storage analysis plates 4 by CAN and kept in.3 axle acceleration sensors 22
By detecting the inclination angle of photoelectric sensor 21, and send balance adjustment control panel 3 to.
Balance adjustment control panel 3, the level inclination fed back according to probe data collection plate 2 adjusts electric pushrod 16, makes light
Electric transducer 21 keeps horizontal level.Such as beyond certain angle limitation scope, it can be alarmed by corresponding status indicator lamp,
Remind testing staff adjustment stroller gait of march or wait photoelectric sensor 21 be adjusted to the angular deviation range of permission with
It is interior.
Data storage analysis plates 4, store gathered data, and do corresponding data processing and inversion, while being built with host computer 5
Vertical even machine simultaneously transmits data.Specifically, as shown in figure 5, the data storage analysis plates 4 include encoder 41, electronic compass 42,
Second arm processor 43 and memory 44.
Encoder 41, detects the operating range of trolley 1.In order to obtain high-precision operating range, it is necessary to exhausted using multi-turn
To value encoder.The advantage of encoder is to determine coding by mechanical location, each position encoded not repeat uniquely, without
Memory.Big additionally, due to measurement range, Shi Jishiyong often rich more, so unnecessary when mounted hard small change point will
A certain centre position just can be with as starting point, and enormously simplify installation and debugging difficulty.This field lighting tester is adopted
With SPM60 multi-turn absolute value encoder-MODBUS, technical parameter：Individual pen resolution ratio is 1024, and successive turn is 4096.
Electronic compass 42, detects the track that the orientation and trolley 1 of photoelectric sensor 21 are travelled；Specifically, this place
The electronic compass of lighting tester is triaxial testing system HMC5883L, is a kind of surface-pasted highly integrated module, and band
There is the weak magnetic sensor chip of digital interface, applied to inexpensive compass and magnetic field detection field.HMC5883L includes most advanced
The serial magnetoresistive transducers of high-resolution HMC118X, and attach the integrated circuit of Honeywell patent and include amplifier, disappear automatically
Magnetic driven device, deviation calibration, 12 analog-digital converters of the compass precision controlling at 1 °~2 ° can be made.
Host computer 5, is calculated and output field ground space brightness value according to the illumination data that collects.Specifically, passing through coding
The automatic data collection distance of device 41, brightness value is gathered by photoelectric sensor 21, and 3 axle acceleration sensors gather level inclination data,
Concentrated by USB interface and be sent to host computer 5, place sky is calculated respectively according to corresponding criterion calculation formula by host computer 5
Between brightness value and uniform spatial distribution degree, while provide storage of history data P function.Host computer 5 is generally located on the end of handrail 11
The position in portion, is easy to operating personnel to check information at any time.
The better embodiment of the present invention is the foregoing is only, is not intended to limit the invention, it is all the present invention's
Within spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (6)
1. a kind of field lighting tester, it includes trolley (1), and the trolley (1) includes handrail (11), turning-bar
(12), front-wheel (13), two trailing wheels (14), chassis (15), electric pushrod (16), trailing wheel rotating shaft (17) and two connecting rods (18), are turned to
Bar (12) and front-wheel (13) are rotatably connected and fixed with handrail (11) in the horizontal direction, and turning-bar (12) and chassis (15) are along lead
Vertical direction is rotatably connected, and two trailing wheels (14) are rotatably connected with horizontally disposed trailing wheel rotating shaft (17) respectively, trailing wheel rotating shaft
(17) two connecting rods (18) are fixed with, two connecting rods (18) are hinged with chassis (15) and electric pushrod (16) respectively, electric pushrod
(16) one end is hinged with chassis (15), it is characterised in that：Also include probe data collection plate (2), balance adjustment control panel (3),
Data storage analysis plates (4) and host computer (5), probe data collection plate (2), balance adjustment control panel (3), data storage point
Using the connection of CAN signal between analysis plate (4), data storage analysis plates (4) are connected with host computer (5) signal, wherein,
Probe data collection plate (2), including photoelectric sensor (21) and 3 axle acceleration sensors (22), photoelectric sensor (21)
Illumination data is gathered, 3 axle acceleration sensors (22) obtain the level inclination of photoelectric sensor (21)；
Balance adjustment control panel (3), the level inclination fed back according to probe data collection plate (2) adjusts electric pushrod (16), makes
Photoelectric sensor (21) keeps horizontal level；
Data storage analysis plates (4), store gathered data, and do corresponding data processing and inversion, while being built with host computer (5)
Vertical even machine simultaneously transmits data；
Host computer (5), is calculated and output field ground space brightness value according to the illumination data that collects.
2. field lighting tester as claimed in claim 1, it is characterised in that：Also include vertically disposed expansion link (19),
Two ends connect turning-bar (12) and probe data collection plate (2) respectively.
3. field lighting tester as claimed in claim 1, it is characterised in that：Also include horizontally disposed swingle (20),
Described swingle (20) one end is hinged in the horizontal direction with turning-bar (12), and the other end is connected with probe data collection plate (2).
4. field lighting tester as claimed in claim 1, it is characterised in that：The probe data collection plate (2) includes five
Individual photoelectric sensor (21), in addition to the first arm processor (23), five photoelectric sensors (21) respectively along it is upper, left and right, preceding,
Rear to setting, five photoelectric sensors (21), 3 axle acceleration sensors (22) respectively with the first arm processor (23) signal
Connection, the first arm processor (23) is connected with CAN signal.
5. field lighting tester as claimed in claim 1, it is characterised in that：The data storage analysis plates (4) include compiling
Code device (41), electronic compass (42), the second arm processor (43) and memory (44), wherein,
Encoder (41), detects trolley (1) operating range；
Electronic compass (42), the track of orientation and trolley (1) traveling of detection photoelectric sensor (21)；
Second arm processor (43), connects with encoder (41), electronic compass (42), memory (44) and CAN signal respectively
Connect.
6. field lighting tester as claimed in claim 5, it is characterised in that：The electronic compass (42) uses three number of axle words
Compass HMC5883L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710686609.2A CN107314812B (en) | 2017-08-08 | 2017-08-08 | Field lighting tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710686609.2A CN107314812B (en) | 2017-08-08 | 2017-08-08 | Field lighting tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107314812A true CN107314812A (en) | 2017-11-03 |
| CN107314812B CN107314812B (en) | 2019-08-09 |
Family
ID=60170153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710686609.2A Active CN107314812B (en) | 2017-08-08 | 2017-08-08 | Field lighting tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107314812B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113562045A (en) * | 2021-07-09 | 2021-10-29 | 深圳市勘察研究院有限公司 | A appurtenance for wisdom city underground space current situation investigation |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2275333A (en) * | 1993-02-17 | 1994-08-24 | Tailor Made Systems Limited | Measurement of the output of a lamp |
| CN103115674A (en) * | 2013-01-22 | 2013-05-22 | 杭州浙大三色仪器有限公司 | Detecting device for scene space lighting |
| CN203824646U (en) * | 2014-05-19 | 2014-09-10 | 孙彩云 | Optical-parameter measurement dolly |
| CN104848940A (en) * | 2015-05-20 | 2015-08-19 | 广州质量监督检测研究院 | Road surface illumination detection apparatus and method |
| WO2017028579A1 (en) * | 2015-08-14 | 2017-02-23 | 杭州海康威视数字技术股份有限公司 | Camera and surveillance system for video surveillance |
| CN207066598U (en) * | 2017-08-08 | 2018-03-02 | 湖北省计量测试技术研究院 | Field lighting tester |
-
2017
- 2017-08-08 CN CN201710686609.2A patent/CN107314812B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2275333A (en) * | 1993-02-17 | 1994-08-24 | Tailor Made Systems Limited | Measurement of the output of a lamp |
| CN103115674A (en) * | 2013-01-22 | 2013-05-22 | 杭州浙大三色仪器有限公司 | Detecting device for scene space lighting |
| CN203824646U (en) * | 2014-05-19 | 2014-09-10 | 孙彩云 | Optical-parameter measurement dolly |
| CN104848940A (en) * | 2015-05-20 | 2015-08-19 | 广州质量监督检测研究院 | Road surface illumination detection apparatus and method |
| WO2017028579A1 (en) * | 2015-08-14 | 2017-02-23 | 杭州海康威视数字技术股份有限公司 | Camera and surveillance system for video surveillance |
| CN106713822A (en) * | 2015-08-14 | 2017-05-24 | 杭州海康威视数字技术股份有限公司 | Video camera used for video monitoring and monitoring system |
| CN207066598U (en) * | 2017-08-08 | 2018-03-02 | 湖北省计量测试技术研究院 | Field lighting tester |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113562045A (en) * | 2021-07-09 | 2021-10-29 | 深圳市勘察研究院有限公司 | A appurtenance for wisdom city underground space current situation investigation |
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| CN107314812B (en) | 2019-08-09 |
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Inventor after: Wang Qi Inventor after: Ge Jiuzhi Inventor after: Xu Xun Inventor after: Wang Yanfeng Inventor after: Zhuo Jia Inventor before: Ge Jiuzhi Inventor before: Wang Qi Inventor before: Xu Xun Inventor before: Wang Yanfeng Inventor before: Zhuo Jia |
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