CN113738526A - Fault diagnosis system for abnormal oil injection of small aviation piston engine - Google Patents
Fault diagnosis system for abnormal oil injection of small aviation piston engine Download PDFInfo
- Publication number
- CN113738526A CN113738526A CN202111098967.4A CN202111098967A CN113738526A CN 113738526 A CN113738526 A CN 113738526A CN 202111098967 A CN202111098967 A CN 202111098967A CN 113738526 A CN113738526 A CN 113738526A
- Authority
- CN
- China
- Prior art keywords
- fault
- abnormal
- data
- module
- unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D2041/224—Diagnosis of the fuel system
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a fault diagnosis system for abnormal oil injection of a small aviation piston engine, which comprises a data acquisition module, a central processing module, a data matching module, a data output module, a database module, a mobile terminal and a control host; according to the method, the conventional data parameters of the normal state of the oil sprayer and the abnormal data parameters of the fault state of the oil sprayer are respectively acquired through the data acquisition module, then the central processing module is used for comparing the two groups of data parameters and extracting the difference information, namely the information generated by the fault, and then the difference information, the fault reason of the oil sprayer in the database module and the abnormal information corresponding to the fault reason are matched and paired, so that the accurate fault reason is diagnosed according to the pairing result.
Description
Technical Field
The invention relates to the technical field of engine fault detection, in particular to a fault diagnosis system for abnormal oil injection of a small aviation piston engine.
Background
The unmanned aerial vehicle is an unmanned aerial vehicle operated by utilizing radio remote control equipment and a self-contained program control device, or is completely or intermittently and autonomously operated by an on-board computer, compared with a piloted aircraft, the unmanned aerial vehicle is often more suitable for dangerous aviation tasks, the application of the existing unmanned aerial vehicle in the fields of aerial photography, agriculture, plant protection, miniature self-timer, express transportation, disaster relief, wild animal observation, infectious disease monitoring, surveying and mapping, news reporting, electric power inspection, disaster relief, movie and television shooting, romantic manufacturing and the like is greatly expanded, the application of the unmanned aerial vehicle per se is actively expanded in developed countries, the application and the development of the unmanned aerial vehicle technology are actively expanded, and a small aviation piston engine is used as a power source of the unmanned aerial vehicle, and the unmanned aerial vehicle can often work in complicated and changeable environments, high-temperature environments, high-pressure environments and multiple heat friction environments, and some faults can often appear;
at present, fault types and reasons of a small-sized aviation piston engine are various, one of the most common faults is an abnormal oil injection fault, most of the existing faults aiming at the abnormal oil injection are regular maintenance and replacement or some simple line detection, but the methods do not have an accurate fault diagnosis function, the oil injection fault of the engine cannot be timely and effectively found, and the actual use requirement cannot be met, so that certain potential safety hazard is brought to the operation of an unmanned aerial vehicle, and the normal operation of an aviation task of the unmanned aerial vehicle is not facilitated.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a fault diagnosis system for abnormal oil injection of a small aviation piston engine, which acquires oil injector data parameters through a data acquisition module, compares the two groups of data parameters through a central processing module, extracts difference information, and matches and pairs the difference information with oil injector fault reasons in a database module and abnormal information corresponding to the fault reasons, so that accurate fault reasons can be diagnosed according to matching results, and the fault diagnosis system is more efficient and accurate compared with a traditional jacking maintenance or detection mode.
In order to achieve the purpose of the invention, the invention is realized by the following technical scheme: a fault diagnosis system for abnormal oil injection of a small aviation piston engine comprises a data acquisition module, a central processing module, a data matching module, a data output module, a database module, a mobile terminal and a control host, wherein the data acquisition module comprises a conventional data acquisition unit for acquiring conventional data parameters of an oil injector in a normal operation state and an abnormal data acquisition unit for acquiring abnormal data parameters of the oil injector in a fault state;
the central processing module comprises a data comparison unit and a data extraction unit, the data comparison unit compares the conventional data parameters with the abnormal data parameters to obtain difference information, and the data extraction unit is used for extracting the difference information;
the database module stores fault reasons of the oil injector and abnormal information corresponding to the fault reasons;
and the data matching module matches and pairs the extracted difference information with the fault reasons of the oil sprayer in the database module and the abnormal information corresponding to the fault reasons, and confirms the diagnosis of the fault reasons.
The further improvement lies in that: the fuel injector fault reason and the abnormal information corresponding to the fault reason stored in the database module are pre-input and updated in real time for a user, and the data output module outputs the fault reason matched with the difference information to the control host and the mobile terminal according to the matching confirmation result.
The further improvement lies in that: the oil injection quantity detection unit, the temperature detection unit, the pressure detection unit and the electric power detection unit are arranged in the conventional data acquisition unit and the abnormal data acquisition unit, and the conventional data acquisition unit does not work when the abnormal data acquisition unit works.
The further improvement lies in that: the fuel injection quantity detection unit is used for detecting the fuel injection quantity of the fuel injector, the temperature detection unit is used for detecting the air inlet and outlet temperature of the fuel injector, and the pressure detection unit is used for detecting the air inlet and outlet pressure and the fuel pressure of the fuel injector.
The further improvement lies in that: the electric power detection unit comprises a voltage sensor, a resistance sensor and a current sensor and is respectively used for detecting the power supply voltage, the resistance and the current value of the fuel injector.
The further improvement lies in that: the data acquisition module is further connected with a synchronous feedback module, the synchronous feedback module comprises a data synchronization unit and an information output unit, the data synchronization unit is connected with the abnormal data acquisition unit and synchronously transmits the abnormal data parameters acquired by the abnormal data acquisition unit to the information output unit, and the information output unit converts the abnormal data parameters into readable information and then sends the readable information to the control host and the mobile terminal.
The further improvement lies in that: the mobile terminal is one of a smart phone, a tablet personal computer or a notebook computer, APP matched with the system are installed on the smart phone, the tablet personal computer or the notebook computer, and a touch screen is arranged on the control host.
The invention has the beneficial effects that: according to the method, the conventional data parameters of the normal state of the oil sprayer and the abnormal data parameters of the fault state of the oil sprayer are respectively acquired through the data acquisition module, then the central processing module is used for comparing the two groups of data parameters and extracting the difference information, namely the information generated by the fault, and then the difference information, the fault reason of the oil sprayer in the database module and the abnormal information corresponding to the fault reason are matched and paired, so that the accurate fault reason is diagnosed according to the pairing result.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a system according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a system according to a second embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
Referring to fig. 1, the present embodiment provides a fault diagnosis system for abnormal fuel injection of a small-sized aviation piston engine, including a data acquisition module, a central processing module, a data matching module, a data output module, a database module, a mobile terminal and a control host, where the data acquisition module includes a conventional data acquisition unit for acquiring conventional data parameters of a fuel injector in a normal operation state and an abnormal data acquisition unit for acquiring abnormal data parameters of the fuel injector in a fault state, when the abnormal data acquisition unit operates, the conventional data acquisition unit does not operate, and the conventional data acquisition unit and the abnormal data acquisition unit are respectively provided with a fuel injection amount detection unit, a temperature detection unit, a pressure detection unit and an electric power detection unit, the fuel injection amount detection unit is used for detecting fuel injection amount of the fuel injector, and the temperature detection unit is used for detecting temperature of air entering and exiting the fuel injector, the pressure detection unit is used for detecting the pressure of inlet and outlet air and the pressure of fuel oil of the oil sprayer, and the electric power detection unit comprises a voltage sensor, a resistance sensor and a current sensor and is respectively used for detecting the power supply voltage, resistance and current value of the oil sprayer;
the data acquisition module is also connected with a synchronous feedback module, the synchronous feedback module comprises a data synchronization unit and an information output unit, the data synchronization unit is connected with the abnormal data acquisition unit and synchronously transmits the abnormal data parameters acquired by the abnormal data acquisition unit to the information output unit, and the information output unit converts the abnormal data parameters into readable information and then transmits the readable information to the control host and the mobile terminal;
the central processing module comprises a data comparison unit and a data extraction unit, the data comparison unit compares the conventional data parameters with the abnormal data parameters to obtain difference information, and the data extraction unit is used for extracting the difference information;
the fault reasons of the oil injector and the abnormal information corresponding to the fault reasons are stored in the database module, and the fault reasons of the oil injector and the abnormal information corresponding to the fault reasons stored in the database module are pre-input and updated in real time by a user;
the data matching module matches and pairs the extracted difference information with the fault reasons of the oil injector in the database module and the abnormal information corresponding to the fault reasons, and confirms the fault reasons;
the data output module outputs the fault reason matched with the difference information to the control host and the mobile terminal according to the matching confirmation result;
the mobile terminal is one of a smart phone, a tablet personal computer or a notebook computer, the smart phone, the tablet personal computer or the notebook computer are all provided with APP matched with the system, and the control host is provided with a touch screen.
Example two
Referring to fig. 2, the fault diagnosis system for the abnormal fuel injection of the small-sized aviation piston engine further comprises a network search module and a fault correction module, wherein the network search module comprises an information processing unit for extracting fault characteristic information from abnormal data parameters and an information search unit for searching relevant fault reasons on the internet according to the fault characteristic information;
the fault correction module comprises an oil injection quantity adjusting unit, an electric power adjusting unit and a temperature control unit, wherein the oil injection quantity adjusting unit is used for adjusting the oil injection quantity of the oil injector, the electric power adjusting unit is used for adjusting the power supply voltage and current of the oil injector, and the temperature control unit is a micro fan and assists in heat dissipation when the temperature of the oil injector is too high.
When the fuel injector fault diagnosis system works, the fault reasons of the fuel injector and abnormal information corresponding to the fault reasons are stored in the database module in advance, the conventional data acquisition unit is used for acquiring the conventional data parameters of the fuel injector in a normal running state, the abnormal data acquisition unit is used for acquiring the abnormal data parameters of the fuel injector in a fault state, the data comparison unit is used for comparing the conventional data parameters with the abnormal data parameters to obtain difference information, the data extraction unit is used for extracting the compared difference information, the data matching module is used for matching and matching the extracted difference information with the fault reasons of the fuel injector in the database module and the abnormal information corresponding to the fault reasons and determining the fault reasons, and the data output module is used for outputting the fault reasons matched with the difference information to the control host and the mobile terminal according to the matching and determining result for the user to know, and the fault diagnosis of abnormal oil injection of the small aviation piston engine is realized.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The utility model provides a fault diagnosis system that small-size aviation piston engine oil spout is unusual, includes data acquisition module, central processing module, data matching module, data output module, database module, mobile terminal and main control system, its characterized in that:
the data acquisition module comprises a conventional data acquisition unit for acquiring conventional data parameters of the fuel injector in a normal operation state and an abnormal data acquisition unit for acquiring abnormal data parameters of the fuel injector in a fault state;
the central processing module comprises a data comparison unit and a data extraction unit, the data comparison unit compares the conventional data parameters with the abnormal data parameters to obtain difference information, and the data extraction unit is used for extracting the difference information;
the database module stores fault reasons of the oil injector and abnormal information corresponding to the fault reasons;
and the data matching module matches and pairs the extracted difference information with the fault reasons of the oil sprayer in the database module and the abnormal information corresponding to the fault reasons, and confirms the diagnosis of the fault reasons.
2. The system for diagnosing the fault of the abnormal oil injection of the small aviation piston engine as claimed in claim 1, wherein: the fuel injector fault reason and the abnormal information corresponding to the fault reason stored in the database module are pre-input and updated in real time for a user, and the data output module outputs the fault reason matched with the difference information to the control host and the mobile terminal according to the matching confirmation result.
3. The system for diagnosing the fault of the abnormal oil injection of the small aviation piston engine as claimed in claim 1, wherein: the oil injection quantity detection unit, the temperature detection unit, the pressure detection unit and the electric power detection unit are arranged in the conventional data acquisition unit and the abnormal data acquisition unit, and the conventional data acquisition unit does not work when the abnormal data acquisition unit works.
4. The system for diagnosing the fault of the abnormal oil injection of the small aviation piston engine as claimed in claim 3, wherein: the fuel injection quantity detection unit is used for detecting the fuel injection quantity of the fuel injector, the temperature detection unit is used for detecting the air inlet and outlet temperature of the fuel injector, and the pressure detection unit is used for detecting the air inlet and outlet pressure and the fuel pressure of the fuel injector.
5. The system for diagnosing the fault of the abnormal oil injection of the small aviation piston engine as claimed in claim 3, wherein: the electric power detection unit comprises a voltage sensor, a resistance sensor and a current sensor and is respectively used for detecting the power supply voltage, the resistance and the current value of the fuel injector.
6. The system for diagnosing the fault of the abnormal oil injection of the small aviation piston engine as claimed in claim 1, wherein: the data acquisition module is further connected with a synchronous feedback module, the synchronous feedback module comprises a data synchronization unit and an information output unit, the data synchronization unit is connected with the abnormal data acquisition unit and synchronously transmits the abnormal data parameters acquired by the abnormal data acquisition unit to the information output unit, and the information output unit converts the abnormal data parameters into readable information and then sends the readable information to the control host and the mobile terminal.
7. The system for diagnosing the fault of the abnormal oil injection of the small aviation piston engine as claimed in claim 1, wherein: the mobile terminal is one of a smart phone, a tablet personal computer or a notebook computer, APP matched with the system are installed on the smart phone, the tablet personal computer or the notebook computer, and a touch screen is arranged on the control host.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111098967.4A CN113738526A (en) | 2021-09-18 | 2021-09-18 | Fault diagnosis system for abnormal oil injection of small aviation piston engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111098967.4A CN113738526A (en) | 2021-09-18 | 2021-09-18 | Fault diagnosis system for abnormal oil injection of small aviation piston engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113738526A true CN113738526A (en) | 2021-12-03 |
Family
ID=78739994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111098967.4A Pending CN113738526A (en) | 2021-09-18 | 2021-09-18 | Fault diagnosis system for abnormal oil injection of small aviation piston engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113738526A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009211472A (en) * | 2008-03-05 | 2009-09-17 | Fuji Xerox Co Ltd | Failure-diagnosing device and program |
| US20100147058A1 (en) * | 2008-12-12 | 2010-06-17 | Gm Global Technology Operations, Inc. | Fuel injector diagnostic system and method for direct injection engine |
| JP2013256922A (en) * | 2012-06-14 | 2013-12-26 | Denso Corp | Device and method of abnormality determination of fuel injection valve |
| CN103777626A (en) * | 2014-01-22 | 2014-05-07 | 广东亿纬赛恩斯新能源系统有限公司 | Diagnostic method and system for whole vehicle faults of electric vehicle |
| CN109240222A (en) * | 2018-08-09 | 2019-01-18 | 东风特汽（十堰）专用车有限公司 | Car fault diagnosis method, system and its intelligent diagnostics server end |
| CN109358593A (en) * | 2018-09-11 | 2019-02-19 | 陕西千山航空电子有限责任公司 | A kind of portable aviation EDPAC Engine Diagnostic Package |
| CN111441864A (en) * | 2020-04-02 | 2020-07-24 | 浙江三一装备有限公司 | Engine health diagnosis method and engine diagnosis system |
| CN111779588A (en) * | 2020-08-05 | 2020-10-16 | 天津布尔科技有限公司 | Unmanned aerial vehicle engine controller with remote diagnosis and alarm functions |
| CN111795826A (en) * | 2020-06-29 | 2020-10-20 | 南京航空航天大学 | Fault diagnosis method for abnormal oil injection of small two-stroke piston engine |
| CN112664319A (en) * | 2020-12-25 | 2021-04-16 | 航天时代飞鸿技术有限公司 | Control system and fault diagnosis method for aviation piston two-stroke supercharged engine |
| CN214096603U (en) * | 2021-01-28 | 2021-08-31 | 湖南工业大学 | Diesel engine fault real-time diagnosis system |
-
2021
- 2021-09-18 CN CN202111098967.4A patent/CN113738526A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009211472A (en) * | 2008-03-05 | 2009-09-17 | Fuji Xerox Co Ltd | Failure-diagnosing device and program |
| US20100147058A1 (en) * | 2008-12-12 | 2010-06-17 | Gm Global Technology Operations, Inc. | Fuel injector diagnostic system and method for direct injection engine |
| JP2013256922A (en) * | 2012-06-14 | 2013-12-26 | Denso Corp | Device and method of abnormality determination of fuel injection valve |
| CN103777626A (en) * | 2014-01-22 | 2014-05-07 | 广东亿纬赛恩斯新能源系统有限公司 | Diagnostic method and system for whole vehicle faults of electric vehicle |
| CN109240222A (en) * | 2018-08-09 | 2019-01-18 | 东风特汽（十堰）专用车有限公司 | Car fault diagnosis method, system and its intelligent diagnostics server end |
| CN109358593A (en) * | 2018-09-11 | 2019-02-19 | 陕西千山航空电子有限责任公司 | A kind of portable aviation EDPAC Engine Diagnostic Package |
| CN111441864A (en) * | 2020-04-02 | 2020-07-24 | 浙江三一装备有限公司 | Engine health diagnosis method and engine diagnosis system |
| CN111795826A (en) * | 2020-06-29 | 2020-10-20 | 南京航空航天大学 | Fault diagnosis method for abnormal oil injection of small two-stroke piston engine |
| CN111779588A (en) * | 2020-08-05 | 2020-10-16 | 天津布尔科技有限公司 | Unmanned aerial vehicle engine controller with remote diagnosis and alarm functions |
| CN112664319A (en) * | 2020-12-25 | 2021-04-16 | 航天时代飞鸿技术有限公司 | Control system and fault diagnosis method for aviation piston two-stroke supercharged engine |
| CN214096603U (en) * | 2021-01-28 | 2021-08-31 | 湖南工业大学 | Diesel engine fault real-time diagnosis system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105446328A (en) | A generating set remote fault diagnosis and health monitor system and a data capture method | |
| CN205622314U (en) | Wireless distribution transformer health condition monitoring reaches declares system in advance | |
| CN109460835A (en) | Situ hardware managing and control system and method | |
| CN104375486A (en) | Intelligent home control system | |
| CN116980958B (en) | Radio equipment electric fault monitoring method and system based on data identification | |
| CN109827663A (en) | Power equipment method for inspecting based on infrared imaging long distance temperature measurement | |
| CN208737284U (en) | A kind of the vacuum equipment monitoring and control system of safe and intelligent | |
| CN106197590A (en) | A kind of electromotor amount of fuel wireless supervisory control system driven by the engine and method | |
| CN104049606A (en) | Remote multi-dimensional household appliance information management system and management method thereof | |
| CN113123958A (en) | Fault diagnosis method and system for plunger pump | |
| CN113738526A (en) | Fault diagnosis system for abnormal oil injection of small aviation piston engine | |
| CN105929764A (en) | Wireless monitoring system for generator | |
| CN208172552U (en) | A kind of data transmission terminal for central air-conditioning water system remote monitoring | |
| CN205809624U (en) | A kind of electromotor wireless supervisory control system | |
| CN204650249U (en) | Pump station integrated supervisory system | |
| CN208257772U (en) | A kind of photovoltaic module monitoring system | |
| CN203689650U (en) | Daily electricity consumption model collection device and daily electricity consumption model acquisition system | |
| KR102521645B1 (en) | Solar photovoltaic power station monitoring method | |
| CN210513210U (en) | Temperature and humidity detection equipment based on Ethernet transmission and power supply | |
| CN106154924A (en) | A kind of equipment box lightning protection is for power utilization monitoring device | |
| CN205563922U (en) | Multi -functional detection alarm device | |
| CN203101929U (en) | Compressed air remote management system | |
| CN107590972A (en) | A kind of slave computer alarm and remote alarming system | |
| CN209055649U (en) | A kind of verification process data visualisation system | |
| CN104811492A (en) | Underground cable monitoring device and method based on urban lightning nodes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211203 |