CN103143524A - Street lamp cleaning system based on internet of things - Google Patents
Street lamp cleaning system based on internet of things Download PDFInfo
- Publication number
- CN103143524A CN103143524A CN2013100986251A CN201310098625A CN103143524A CN 103143524 A CN103143524 A CN 103143524A CN 2013100986251 A CN2013100986251 A CN 2013100986251A CN 201310098625 A CN201310098625 A CN 201310098625A CN 103143524 A CN103143524 A CN 103143524A
- Authority
- CN
- China
- Prior art keywords
- internet
- street lamp
- control module
- system based
- rotation shaft
- 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
Images
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention relates to a street lamp cleaning system based on the internet of things, which is used for cleaning a light source device (2) which is arranged on a lamp post (1). The system comprises a control terminal, an external connecting water pipe (7) which is arranged on the lamp post (1), a control module (3), and a power supply (4), a communication receiving module (5) and an electrically operated valve (6) which are connected with the control module (3), wherein the electrically operated valve (6) is arranged on a water outlet of the external connecting water pipe (7) and above the light source device (2). According to the system, the control terminal remotely controls the cleaning device on a street lamp through a communication network to automatically clean the light source device of the lamp street, so that complicated manual operation is dispensed, and vehicles are enabled to run on a road in order.
Description
Technical field
The present invention relates to a kind of street lamp purging system based on Internet of Things.
Background technology
Street lamp is as the important urban operating mechanism in city, undertaking is the task that the vehicle that travels on road and pedestrian are thrown light on, guarantee the road running environment of safety, this just needs street lamp constantly to keep good illuminating effect, maintenance unit as street lamp can the personnel that regularly arrange work clean street lamp, but such Comparision is loaded down with trivial details bothersome, in cleaning process, not only need to occupy the track, affect the current of vehicle on road; And the staff also needs to carry out aerial work by vehicle lifting, exists potential safety hazard.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of based on Internet of Things, can avoid loaded down with trivial details manually-operated, street lamp is realized the street lamp purging system of cleaning operation.
The present invention is in order to solve the problems of the technologies described above by the following technical solutions: the present invention has designed a kind of street lamp purging system based on Internet of Things, clean for the light supply apparatus that is arranged on lamp stand, comprise control terminal, be arranged on external water pipe, control module and the power supply that is connected with control module respectively, communications reception module and electrically operated valve on lamp stand; Electrically operated valve is arranged on the delivery port of external water pipe, and is placed in the top of light supply apparatus; Wherein, power supply is powered for each device through control module, and control terminal sends control command by communication network to control module, and control module is controlled electrically operated valve work according to the control command that receives by the communications reception module.
As a preferred technical solution of the present invention: also comprise the Water outlet spray head that is arranged on described external water pipe delivery port, Water outlet spray head is placed in the top of described light supply apparatus, and Water outlet spray head is controlled through described electrically operated valve and carried out work.
As a preferred technical solution of the present invention: also comprise sewage collection equipment, sewage collection equipment comprises collection container, electric rotation shaft and sewage water pipe; Electric rotation shaft is arranged near on the lamp stand of described light supply apparatus, collection container is connected with the end to described light supply apparatus above electric rotation shaft, the other end of electric rotation shaft is connected with the sewage water pipe, collection container is rotated around described light supply apparatus by electric rotation shaft, described control module is connected with electric rotation shaft, and the rotation of electric rotation shaft is controlled.
As a preferred technical solution of the present invention: described sewage water pipe is arranged on the inside or outer wall of described lamp stand.
As a preferred technical solution of the present invention: described power supply is the solar panel that is arranged on described lamp stand outer wall.
As a preferred technical solution of the present invention: described communications reception module is the gsm communication receiver module, described control terminal sends control command by the gsm communication network to described control module, and described control module receives control command by the gsm communication receiver module.
As a preferred technical solution of the present invention: described control module is single-chip microcomputer.
A kind of street lamp purging system based on Internet of Things of the present invention adopts above technical scheme compared with prior art, has following technique effect:
(1) the street lamp purging system based on Internet of Things of the present invention's design, control terminal is arranged on cleaning device on street lamp automatically for the road-light light-source device carries out cleaning through the communication network Long-distance Control, has saved loaded down with trivial details manually-operated and has guaranteed normal driving order on road;
(2) in the street lamp purging system based on Internet of Things of the present invention design, the delivery port of the external water pipe that cleans for light supply apparatus sets out sprinkler head, can effectively strengthen the clean level that the lamp light source apparatus that satisfies the need cleans;
(3) in the street lamp purging system based on Internet of Things of the present invention's design, be provided with sewage collection equipment, collect the sewage of trickling after light supply apparatus is cleaned, guaranteed that effectively the beauty of environment is with clean;
(4) in the street lamp purging system based on Internet of Things of the present invention's design, related power acquisition solar panel has guaranteed cleaning and environmental protection that the energy uses;
(5) in the street lamp purging system based on Internet of Things of the present invention's design, the communication network that uses has adopted the gsm communication network of maturation in the prior art, has guaranteed the stability of native system operation.
Description of drawings
Fig. 1 is that the street lamp purging system based on Internet of Things that the present invention designs cleans front structural representation;
Fig. 2 be the present invention design clean based on the street lamp purging system of Internet of Things in structural representation;
Wherein, 1. lamp stand, 2. light supply apparatus, 3. control module, 4. power supply, 5. communications reception module, 6. electrically operated valve, 7. external water pipe, 8. Water outlet spray head, 9. collection container, 10. electric rotation shaft, 11. sewage water pipes.
The specific embodiment
Below in conjunction with Figure of description, the specific embodiment of the present invention is described in further detail.
As shown in Figure 1, the present invention has designed a kind of street lamp purging system based on Internet of Things, clean for the light supply apparatus 2 that is arranged on lamp stand 1, comprise control terminal, be arranged on external water pipe 7, control module 3 and the power supply 4 that is connected with control module 3 respectively, communications reception module 5 and electrically operated valve 6 on lamp stand 1; Electrically operated valve 6 is arranged on the delivery port of external water pipe 7, and is placed in the top of light supply apparatus 2; Wherein, power supply 4 is powered for each device through control module 3, and control terminal sends control command by communication network to control module 3, and control module 3 is controlled electrically operated valve 6 work according to the control command that receives by communications reception module 5.
The street lamp purging system based on Internet of Things of the present invention's design, control terminal carries out cleaning for road-light light-source device 2 automatically through the cleaning device that the communication network Long-distance Control is arranged on street lamp, has saved loaded down with trivial details manually-operated and has guaranteed normal driving order on road.
As a preferred technical solution of the present invention: also comprise the Water outlet spray head 8 that is arranged on described external water pipe 7 delivery ports, Water outlet spray head 8 is placed in the top of described light supply apparatus 2, and Water outlet spray head 8 is controlled through described electrically operated valve 6 and carried out work.
In the street lamp purging system based on Internet of Things of the present invention design, the delivery port of the external water pipe 7 that cleans for light supply apparatus 2 sets out sprinkler head 8, can effectively strengthen the clean level that the lamp light source apparatus 2 that satisfies the need cleans.
As a preferred technical solution of the present invention: also comprise sewage collection equipment, sewage collection equipment comprises collection container 9, electric rotation shaft 10 and sewage water pipe 11; Electric rotation shaft 10 is arranged near on the lamp stand 1 of described light supply apparatus 2, collection container 9 is connected with the end to described light supply apparatus 2 above electric rotation shaft 10, the other end of electric rotation shaft 10 is connected with sewage water pipe 11, collection container 9 is rotated around described light supply apparatus 2 by electric rotation shaft 10, described control module 3 is connected with electric rotation shaft 10, and the rotation of electric rotation shaft 10 is controlled.
In the street lamp purging system based on Internet of Things of the present invention's design, be provided with sewage collection equipment, collect the sewage of trickling after light supply apparatus is cleaned, guaranteed that effectively the beauty of environment is with clean.
As a preferred technical solution of the present invention: described sewage water pipe 11 is arranged on the inside or outer wall of described lamp stand 1.
As a preferred technical solution of the present invention: described power supply 4 is for being arranged on the solar panel on described lamp stand 1 outer wall.
In the street lamp purging system based on Internet of Things of the present invention's design, related power supply 4 has adopted solar panel, has guaranteed cleaning and environmental protection that the energy uses.
As a preferred technical solution of the present invention: described communications reception module 5 is the gsm communication receiver module, described control terminal sends control command by the gsm communication network to described control module 3, and described control module 3 receives control command by the gsm communication receiver module.
In the street lamp purging system based on Internet of Things of the present invention's design, the communication network that uses has adopted the gsm communication network of maturation in the prior art, has guaranteed the stability of native system operation.
As a preferred technical solution of the present invention: described control module 3 is single-chip microcomputer.
As depicted in figs. 1 and 2, the present invention design based on the street lamp purging system of Internet of Things in the middle of actual application, control module sends the cleaning control signal by the gsm communication network to the gsm communication receiver module that is arranged on street lamp, gsm communication receiver module reception control signal is sent to control module 3, at first control module 3 sends control command to the electric rotation shaft 10 that is arranged near on the lamp stand 1 of described light supply apparatus 2, control electric rotation shaft 10 and rotate, the collection container 9 that will be connected with electric rotation shaft 10 rotates to the below of light supply apparatus 2; Then control module 3 sends control command to the electrically operated valve 6 that is arranged on external water pipe 7 delivery ports, control electrically operated valve 6 work, at this moment, the Water outlet spray head 8 that the is arranged on external water pipe 7 delivery ports lamp light source apparatus 2 that just satisfies the need carries out cleaning, the sewage of trickling will flow in collection container 9, discharge along the sewage water pipe 11 that is connected with collection container 9 again, the sewage of avoiding cleaning fall on road or the vehicle that travels on, affect environmental sanitation.
After the cleaning of completing the lamp light source apparatus 2 that satisfies the need, control module 3 sends control command to electric rotation shaft 10 again, control electric rotation shaft 10 and rotate, the collection container 9 that will be connected with electric rotation shaft 10 rotates to the top of light supply apparatus 2, namely completes whole cleaning process.
The present invention design based on the street lamp purging system of Internet of Things in the middle of above whole cleaning process, not only saved loaded down with trivial details manual operation, and avoided occupying the track, the normal driving of impact order, sewage for cleaning has also carried out effective processing, avoids affecting environmental sanitation; To sum up, the street lamp purging system based on Internet of Things of the present invention design is simple in structure, is easy to realize, helps wideling popularize and the modernization construction in city of market.
The above has done detailed description to embodiments of the present invention by reference to the accompanying drawings, but the present invention is not limited to above-mentioned embodiment, in the ken that those of ordinary skills possess, can also make a variety of changes under the prerequisite that does not break away from aim of the present invention.
Claims (7)
1. street lamp purging system based on Internet of Things, clean for the light supply apparatus (2) that is arranged on lamp stand (1), it is characterized in that: the external water pipe (7), control module (3) and the power supply (4) that is connected with control module (3) respectively, communications reception module (5) and the electrically operated valve (6) that comprise control terminal, are arranged on lamp stand on (1); Electrically operated valve (6) is arranged on the delivery port of external water pipe (7), and is placed in the top of light supply apparatus (2); Wherein, power supply (4) is powered for each device through control module (3), control terminal sends control command by communication network to control module (3), and control module (3) is controlled electrically operated valve (6) work according to the control command that receives by communications reception module (5).
2. a kind of street lamp purging system based on Internet of Things according to claim 1, it is characterized in that: also comprise the Water outlet spray head (8) that is arranged on described external water pipe (7) delivery port, Water outlet spray head (8) is placed in the top of described light supply apparatus (2), and Water outlet spray head (8) is controlled through described electrically operated valve (6) and carried out work.
3. a kind of street lamp purging system based on Internet of Things according to claim 1, is characterized in that: comprise that also sewage collection equipment, sewage collection equipment comprise collection container (9), electric rotation shaft (10) and sewage water pipe (11); Electric rotation shaft (10) is arranged near on the lamp stand (1) of described light supply apparatus (2), collection container (9) is connected with the end to described light supply apparatus (2) above electric rotation shaft (10), the other end of electric rotation shaft (10) is connected with sewage water pipe (11), collection container (9) is rotated around described light supply apparatus (2) by electric rotation shaft (10), described control module (3) is connected with electric rotation shaft (10), and the rotation of electric rotation shaft (10) is controlled.
4. a kind of street lamp purging system based on Internet of Things according to claim 3, it is characterized in that: described sewage water pipe (11) is arranged on the inside or outer wall of described lamp stand (1).
5. a kind of street lamp purging system based on Internet of Things according to claim 1, it is characterized in that: described power supply (4) is for being arranged on the solar panel on described lamp stand (1) outer wall.
6. a kind of street lamp purging system based on Internet of Things according to claim 1, it is characterized in that: described communications reception module (5) is the gsm communication receiver module, described control terminal sends control command by the gsm communication network to described control module (3), and described control module (3) receives control command by the gsm communication receiver module.
7. a kind of street lamp purging system based on Internet of Things according to claim 1, it is characterized in that: described control module (3) is single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310098625.1A CN103143524B (en) | 2013-03-26 | 2013-03-26 | Street lamp cleaning system based on internet of things |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310098625.1A CN103143524B (en) | 2013-03-26 | 2013-03-26 | Street lamp cleaning system based on internet of things |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103143524A true CN103143524A (en) | 2013-06-12 |
| CN103143524B CN103143524B (en) | 2015-01-07 |
Family
ID=48541997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310098625.1A Active CN103143524B (en) | 2013-03-26 | 2013-03-26 | Street lamp cleaning system based on internet of things |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103143524B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105583187A (en) * | 2015-12-21 | 2016-05-18 | 天津焜日科技开发有限公司 | Cleaning device for street lamps |
| CN105880202A (en) * | 2016-06-17 | 2016-08-24 | 胡运冲 | City street lamp cleaning system based on intelligent detection and PWM control |
| CN106016105A (en) * | 2016-06-30 | 2016-10-12 | 江西中天景观有限公司 | Intelligent landscape street lamp capable of achieving cleaning and watering |
| CN106678664A (en) * | 2017-01-22 | 2017-05-17 | 尤鹏超 | Street lamp capable of conducting self-cleaning |
| CN106907636A (en) * | 2017-04-25 | 2017-06-30 | 黄玉如 | Multi-functional street lamp |
| CN106931376A (en) * | 2017-04-25 | 2017-07-07 | 黄玉如 | Automatic cleaning street lamp |
| CN107559779A (en) * | 2017-09-13 | 2018-01-09 | 如皋福大工程技术研究院有限公司 | A kind of lamppost spraying system and control method |
| CN107626480A (en) * | 2017-09-13 | 2018-01-26 | 如皋福大工程技术研究院有限公司 | A kind of lamppost spraying control system and control method |
| CN110216096A (en) * | 2019-05-27 | 2019-09-10 | 河南睿光新能源科技有限公司 | A kind of intelligentized optical energy streetlamp cleaning device |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0242316A2 (en) * | 1986-04-16 | 1987-10-21 | Sociedad Espanola de Construcciones Eléctricas, S.A. | System for the automatic cleaning of screens of electric lighting |
| US20020017004A1 (en) * | 2000-08-04 | 2002-02-14 | Kenichi Nakajima | Illumination apparatus with cleaner, window with cleaner, and road indication apparatus with cleaner |
| CN101191594A (en) * | 2007-12-17 | 2008-06-04 | 马超 | Road lamp capable of automatic cleaning |
| CN201485810U (en) * | 2009-08-03 | 2010-05-26 | 瞿志温 | Simplified overhead street automatic water spraying facility |
| CN201711299U (en) * | 2010-05-10 | 2011-01-19 | 常州佳讯光电产业发展有限公司 | Self cleaning device of solar street lamp battery panel |
| CN201944738U (en) * | 2010-12-01 | 2011-08-24 | 广东奥其斯科技有限公司 | Light-emitting diode (LED) street lamp with self-cleaning and radiating functions |
| CN102291884A (en) * | 2011-06-08 | 2011-12-21 | 山东能发实业有限公司 | Remote street lamp control system based on a 3G (Third Generation) network |
| CN202150972U (en) * | 2011-07-19 | 2012-02-22 | 成都众山科技有限公司 | Street lamp control system based on GPRS wireless network |
| CN202514127U (en) * | 2012-03-15 | 2012-10-31 | 惠州市尚联达电子有限公司 | LED street lamp intelligent management system based on internet of things |
| CN202617455U (en) * | 2012-05-30 | 2012-12-19 | 吕红兵 | Solar energy LED street light controller based on Internet of things |
| CN102905434A (en) * | 2012-10-16 | 2013-01-30 | 东莞理工学院 | Intelligent remote wireless road lamp monitoring system and method |
| CN202721882U (en) * | 2012-08-27 | 2013-02-06 | 成都众山科技有限公司 | Street lamp control system based on Internet of things |
| CN203155607U (en) * | 2013-03-26 | 2013-08-28 | 无锡市崇安区科技创业服务中心 | Road lamp cleaning system based on Internet of things |
-
2013
- 2013-03-26 CN CN201310098625.1A patent/CN103143524B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0242316A2 (en) * | 1986-04-16 | 1987-10-21 | Sociedad Espanola de Construcciones Eléctricas, S.A. | System for the automatic cleaning of screens of electric lighting |
| US20020017004A1 (en) * | 2000-08-04 | 2002-02-14 | Kenichi Nakajima | Illumination apparatus with cleaner, window with cleaner, and road indication apparatus with cleaner |
| CN101191594A (en) * | 2007-12-17 | 2008-06-04 | 马超 | Road lamp capable of automatic cleaning |
| CN201485810U (en) * | 2009-08-03 | 2010-05-26 | 瞿志温 | Simplified overhead street automatic water spraying facility |
| CN201711299U (en) * | 2010-05-10 | 2011-01-19 | 常州佳讯光电产业发展有限公司 | Self cleaning device of solar street lamp battery panel |
| CN201944738U (en) * | 2010-12-01 | 2011-08-24 | 广东奥其斯科技有限公司 | Light-emitting diode (LED) street lamp with self-cleaning and radiating functions |
| CN102291884A (en) * | 2011-06-08 | 2011-12-21 | 山东能发实业有限公司 | Remote street lamp control system based on a 3G (Third Generation) network |
| CN202150972U (en) * | 2011-07-19 | 2012-02-22 | 成都众山科技有限公司 | Street lamp control system based on GPRS wireless network |
| CN202514127U (en) * | 2012-03-15 | 2012-10-31 | 惠州市尚联达电子有限公司 | LED street lamp intelligent management system based on internet of things |
| CN202617455U (en) * | 2012-05-30 | 2012-12-19 | 吕红兵 | Solar energy LED street light controller based on Internet of things |
| CN202721882U (en) * | 2012-08-27 | 2013-02-06 | 成都众山科技有限公司 | Street lamp control system based on Internet of things |
| CN102905434A (en) * | 2012-10-16 | 2013-01-30 | 东莞理工学院 | Intelligent remote wireless road lamp monitoring system and method |
| CN203155607U (en) * | 2013-03-26 | 2013-08-28 | 无锡市崇安区科技创业服务中心 | Road lamp cleaning system based on Internet of things |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105583187A (en) * | 2015-12-21 | 2016-05-18 | 天津焜日科技开发有限公司 | Cleaning device for street lamps |
| CN105880202A (en) * | 2016-06-17 | 2016-08-24 | 胡运冲 | City street lamp cleaning system based on intelligent detection and PWM control |
| CN106016105A (en) * | 2016-06-30 | 2016-10-12 | 江西中天景观有限公司 | Intelligent landscape street lamp capable of achieving cleaning and watering |
| CN106678664A (en) * | 2017-01-22 | 2017-05-17 | 尤鹏超 | Street lamp capable of conducting self-cleaning |
| CN106678664B (en) * | 2017-01-22 | 2018-11-30 | 北京富润成照明***工程有限公司 | It being capable of self-cleaning street lamp |
| CN106907636A (en) * | 2017-04-25 | 2017-06-30 | 黄玉如 | Multi-functional street lamp |
| CN106931376A (en) * | 2017-04-25 | 2017-07-07 | 黄玉如 | Automatic cleaning street lamp |
| CN107559779A (en) * | 2017-09-13 | 2018-01-09 | 如皋福大工程技术研究院有限公司 | A kind of lamppost spraying system and control method |
| CN107626480A (en) * | 2017-09-13 | 2018-01-26 | 如皋福大工程技术研究院有限公司 | A kind of lamppost spraying control system and control method |
| CN110216096A (en) * | 2019-05-27 | 2019-09-10 | 河南睿光新能源科技有限公司 | A kind of intelligentized optical energy streetlamp cleaning device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103143524B (en) | 2015-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103143524B (en) | Street lamp cleaning system based on internet of things | |
| CN203155607U (en) | Road lamp cleaning system based on Internet of things | |
| CN106678664B (en) | It being capable of self-cleaning street lamp | |
| CN202438498U (en) | Automatic cleaning dust-removal system of photovoltaic assembly | |
| CN206398574U (en) | Being capable of self-cleaning street lamp | |
| CN103604072B (en) | A kind of elevating type multifunctional street lamp | |
| CN102588860A (en) | Method for cleaning solar streetlight photovoltaic panel | |
| CN102614728A (en) | Street lamp pole type water mist dust fall device for controlling PM 2.5 air quality from exceeding standard | |
| CN205716822U (en) | The street lamp with water injector for a kind of highway | |
| CN108644532A (en) | A kind of self-adaptive pipe dredging machine people | |
| CN203628480U (en) | Multifunctional street lamp | |
| CN203678771U (en) | Intelligent cleaning device for traffic lights | |
| CN205140646U (en) | Semi -automatic power equipment sweeper that decontaminates | |
| CN105880202A (en) | City street lamp cleaning system based on intelligent detection and PWM control | |
| CN206477286U (en) | A kind of road and bridge guard bar washing device | |
| CN203615186U (en) | Lifting multifunctional streetlamp | |
| CN204656234U (en) | For administering the device of Public Open Space atmosphere pollution and haze | |
| CN208316663U (en) | A kind of solar energy photovoltaic panel maintenance unmanned plane | |
| CN109945117A (en) | A kind of solar street light with defencive function | |
| CN204266153U (en) | A kind of multidirectional adjustment dewaters road guardrail cleaning device | |
| CN102835930A (en) | Window wiping assist device with water receiver and adjustable water spray angle | |
| CN104517451A (en) | Traffic signal lamp convenient to wash | |
| CN202516444U (en) | Light pole type water mist dust falling device used for controlling standard exceeding of PM2.5 air quality | |
| CN202762248U (en) | Pylon type water mist dust falling device for controlling standard exceeding of PM2.5 air quality | |
| CN209655170U (en) | Automatically cleaning Lawn lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Fang Inventor after: Xu Zijun Inventor after: Cai Yulian Inventor before: Cai Yulian |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: CAI YULIAN TO: WANG FANG XU ZIJUN CAI YULIAN |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |