WO2018210257A1 - Procédé et système d'entraînement au dépannage pratique pour des dispositifs de navigation de navire basés sur une technologie de réalité virtuelle - Google Patents

Procédé et système d'entraînement au dépannage pratique pour des dispositifs de navigation de navire basés sur une technologie de réalité virtuelle Download PDF

Info

Publication number
WO2018210257A1
WO2018210257A1 PCT/CN2018/087051 CN2018087051W WO2018210257A1 WO 2018210257 A1 WO2018210257 A1 WO 2018210257A1 CN 2018087051 W CN2018087051 W CN 2018087051W WO 2018210257 A1 WO2018210257 A1 WO 2018210257A1
Authority
WO
WIPO (PCT)
Prior art keywords
fault
tree
training
ship navigation
library
Prior art date
Application number
PCT/CN2018/087051
Other languages
English (en)
Chinese (zh)
Inventor
李冰蝉
Original Assignee
江苏海事职业技术学院
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 江苏海事职业技术学院 filed Critical 江苏海事职业技术学院
Publication of WO2018210257A1 publication Critical patent/WO2018210257A1/fr

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0481—Interaction techniques based on graphical user interfaces [GUI] based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance
    • G06F3/04815—Interaction with a metaphor-based environment or interaction object displayed as three-dimensional, e.g. changing the user viewpoint with respect to the environment or object
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B9/00—Simulators for teaching or training purposes

Definitions

  • the invention relates to a method and a system for repairing faults of a ship navigation device based on VR technology.
  • Virtual reality technology uses advanced hardware and software technology to generate a very realistic virtual environment for the trainees in terms of sight, hearing and touch.
  • the user interacts with the objects in the virtual environment by means of necessary equipment to interact with each other.
  • the feelings and experiences of the real environment enable the trainees to be close to the actual operation to the maximum extent, greatly improve the interaction and participation, and effectively overcome the shortcomings of the actual equipment training due to time and venue restrictions, high training costs, and easy damage to equipment. .
  • the object of the present invention is to provide a VR-based ship navigation device fault repairing training method and system capable of placing a user in a virtual reality environment to improve the interaction and training effect of practical training.
  • the technical solution of the present invention is as follows: a training method for fault diagnosis and repair of a ship navigation device based on VR technology, comprising the following steps:
  • the equipment 3D model library according to the different final state nodes of the fault classification tree, design a fault solution, and generate a fault tree, the equipment 3D model library, the fault classification tree and the fault tree together constitute a ship navigation device VR real Training base library;
  • step 4 Obtain the actual operation behavior of the user, and compare with the user behavior edge of the current state node of the fault elimination tree. If the matching is performed, perform step 4; if not, the task fails, and enter step 5;
  • Step 3 For the failed training tasks in Step 3, use the multimedia teaching library to push relevant materials to the students and return to Step 3.
  • step 1 in the step of classifying and arranging the common faults of the ship navigation device by the fault classification tree manner, for the complex fault, it is further subdivided into multiple fault points, and through the combination of the fault points, This supports complex faults or multiple fault settings.
  • the method specifically includes the following steps: selecting a corresponding fault elimination tree in the basic library of the ship navigation device VR according to the set fault; acquiring a three-dimensional model library of the device, generating a VR fault scene, and displaying A visual 3D model of the initial state node of the troubleshooting tree.
  • the system for repairing and repairing a ship navigation device based on the above-mentioned VR technology comprises: a basic library unit of a ship navigation device VR training, classifying and arranging common faults of the ship navigation device to form a fault classification tree, and Based on the fault classification tree, the ship navigation equipment and its components are modeled in three dimensions, forming a three-dimensional model library of equipment including normal state and fault state, and designing a fault solution according to different final state nodes of the fault classification tree.
  • the VR training basic library unit retrieves the corresponding three-dimensional model of the fault elimination tree and the device, generates a VR fault scene, and displays a visual three-dimensional model of the initial state node of the fault elimination tree; the fault elimination unit is based on the VR fault
  • the fault scenario established by the scenario establishing unit acquires the actual operation behavior of the user, and the fault elimination tree is Compare and determine the success or failure of the training task; the multimedia teaching library unit, including the relevant information of the ship navigation equipment troubleshooting teaching; the training unit, the user failure training task for the troubleshooting unit, the utilization
  • the multimedia teaching library unit is to push relevant multimedia training materials to the students, and returns to the troubleshooting unit for intensive training.
  • the ship navigation device VR training basic library unit comprises: a failure analysis module, a device three-dimensional model construction module and a fault elimination tree construction module; the failure analysis module is used for classifying common faults of the ship navigation device The tree mode is sorted to form a fault classification tree; the device three-dimensional model building module is configured to perform three-dimensional modeling on the guiding device and its components based on the fault classification tree to form a device including a normal state and a fault state. a three-dimensional model library; the fault tree construction module is configured to design a fault solution based on different final state nodes of the fault classification tree, and thereby construct a fault tree.
  • the VR fault scenario establishing unit includes: a fault information setting module, configured to input the set ship navigation device fault information; and a fault initial state three-dimensional model establishing module, configured to set the module according to the fault information.
  • the set equipment failure is obtained from the ship navigation device VR training basic library unit to retrieve the corresponding three-dimensional model of the fault elimination tree and the device, generate a VR fault scene, and display a visual three-dimensional model of the initial state node of the fault elimination tree.
  • the fault elimination unit includes: a user actual operation behavior obtaining module: based on the fault scene established by the VR fault scene establishing unit, capturing a fault elimination action of the student to form corresponding fault elimination information; and the fault elimination judgment module:
  • the fault elimination tree is retrieved, and the user actual behavior obtained by the user actual behavior acquisition module is compared with the user behavior edge of the current state node of the fault elimination tree, and the fault elimination information is determined to be correct.
  • the comparison process is as follows: if matching, determining whether the current state node of the fault elimination tree is a final state node, and if so, the training task succeeds and ends; if not, entering the next state node of the matched user behavior edge; If it does not match, the task fails.
  • the utility model has the beneficial effects that the VR technology-based ship navigation equipment fault repairing training method and system categorizes fault classification of the navigation equipment to construct a fault classification tree, which is based on different final state nodes in the fault classification tree.
  • the experience enhances the effectiveness of teaching and training.
  • FIG. 1 is a flow chart showing a method for training and repairing a ship navigation device based on VR technology according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a ship radar equipment fault classification tree related to the present invention
  • FIG. 3 is a schematic diagram of a troubleshooting tree for radar transmitter failures associated with the present invention.
  • a method for troubleshooting a ship navigation device based on VR technology includes the following steps:
  • step S1 according to the actual situation of the device, the related faults to be taught and trained are classified and modeled in a classification tree manner, and corresponding solutions are given.
  • step S2 the related faults to be taught and trained are classified and modeled in a classification tree manner, and corresponding solutions are given.
  • step S3 the step of classifying and arranging the fault information of the communication device in a classification tree manner, the complex fault is further subdivided into a plurality of fault points, and the fault is realized by a combination of parallel or series connection of the fault points. Combine to support complex faults or multiple fault settings.
  • the fault classification tree includes a plurality of final state nodes, each of which corresponds to a last leaf state node of the fault classification tree.
  • the fault classification tree is configured to analyze and classify a fault category of the navigation device, where the final state node corresponds to a specific fault of the navigation device.
  • FIG. 2 it is a schematic diagram of a ship radar equipment fault classification tree related to the present invention.
  • the guiding device and its components Constructing the three-dimensional model of the guiding device and its components, that is, by using the three-dimensional modeling technology, the guiding device and its components are three-dimensionally modeled according to teaching requirements, and the arrangement and combination of components and basic components are realized.
  • device parameters such as radar screen
  • a three-dimensional model including the normal state and the fault state of the navigation device and its components is constructed for each of the final state nodes in the fault classification tree, and finally a device three-dimensional model library is formed.
  • a fault solution is designed for each final state node in the fault classification tree to construct a corresponding fault tree.
  • the troubleshooting tree includes a plurality of state nodes and a user behavior operating edge connecting the two adjacent state nodes.
  • the state node includes a basic three-dimensional model of the device state node in the troubleshooting process and a visualization state thereof for displaying the current state of the device during the troubleshooting process;
  • the user behavior operation edge is an operation performed on the communication device, such as power failure, startup, restart, ammeter measurement, voltmeter measurement, replacement of accessories, bypass, etc., by which the communication device is caused to be One of the state nodes enters another of the state nodes.
  • FIG. 3 is a schematic diagram of a troubleshooting tree for a radar transmitter failure associated with the present invention.
  • the communication device includes, but is not limited to, a radar device, and may also be a device such as a GPS, a depth sounder, a log, a VDR, a combined radio or a satellite ship station, or other electrical devices.
  • S2 Select a fault elimination tree according to the set fault, retrieve a three-dimensional model library of the device, generate a VR fault scenario, and display a visual three-dimensional model of the initial state node of the fault elimination tree.
  • step S2 includes the following steps:
  • the device fault 3D model is extracted into the VR device to generate a VR fault scenario, and a visual 3D model of the fault tree initial state node is displayed.
  • the "failure information of the communication device" can set corresponding fault information according to the required teaching and training courses.
  • the extracting of the fault information needs to extract a corresponding three-dimensional fault model of the device from the three-dimensional model library of the device according to the input fault information, so that the teaching and the training can be configured according to requirements. To improve the versatility of teaching and training.
  • the VR device may be a device such as a VR glasses or a VR helmet, which is not limited by the present invention.
  • step S3 Acquire a user actual behavior, and compare with the user behavior edge of the current state node of the fault elimination tree. If the matching is performed, step S4 is performed; if not, the task fails, and the process proceeds to step S5.
  • step S3 the following steps are included:
  • step S4 is performed;
  • step S5 is performed.
  • step S4 Determine whether the current state node of the fault elimination tree is a final state node. If yes, the training task succeeds and ends; if not, the next state node of the matched user behavior edge is entered, and step S3 is repeated.
  • step S5 For the training task that failed in step S3, use the multimedia teaching library to push relevant materials to the student, and return to step S3.
  • step S5 when it is determined in step S3 that the troubleshooting fails, the system pushes the set training materials to the student according to the failed training task in step S3.
  • the training material may be text data, audio data or video material related to the student's failure to eliminate the fault, such as ppt, document, picture, operation step animation, and the like.
  • the purpose of the information is to enable students to comprehensively understand and learn the correct troubleshooting process for failed training tasks, so as to achieve the purpose of strengthening training and learning.
  • a system based on the VR technology-based fault guiding maintenance training method according to FIG. 1 includes: a ship navigation device VR training basic library unit, a VR failure scene establishing unit, a troubleshooting unit, a multimedia teaching library unit, and reinforcement Training unit.
  • the ship navigation device VR training basic library unit is used for classifying and arranging common faults of the ship navigation device, forming a fault classification tree, and performing three-dimensional modeling on the ship navigation device and its components based on the fault classification tree.
  • the ship navigation device VR training basic library unit includes a failure analysis module, a device three-dimensional model construction module, and a fault elimination tree construction module.
  • the fault analysis module is configured to classify common faults of the ship navigation device in a classification tree manner to form a fault classification tree;
  • the device three-dimensional model building module is configured to use the fault classification tree for the navigation device and
  • the components are three-dimensionally modeled to form a three-dimensional model library of devices including a normal state and a fault state;
  • the troubleshooting tree building module is configured to design a fault solution based on different final state nodes of the fault classification tree, and This builds a troubleshooting tree.
  • the VR fault scenario establishing unit retrieves the corresponding fault elimination tree and the device 3D model from the ship navigation device VR training basic library unit according to the set fault of the navigation device, and generates a VR fault scenario.
  • a visual 3D model of the initial state node of the troubleshooting tree is displayed.
  • the VR fault scenario establishing unit includes: a fault information setting module and a fault initial state three-dimensional model establishing module.
  • the fault information setting module is configured to input the set ship navigation device fault information;
  • the fault initial state three-dimensional model establishing module is configured to set a device fault according to the fault information, from the ship
  • the VR training base library unit retrieves the corresponding fault tree and device 3D model, generates a VR fault scene, and displays a visual 3D model showing the initial state node of the fault elimination tree.
  • the fault elimination unit acquires a real operation behavior of the user based on the fault scenario established by the VR fault scenario establishing unit, compares with the fault exclusion tree, and determines the success or failure of the training task.
  • the fault elimination unit includes a user actual behavior acquisition module and a fault determination determination module.
  • the user actual operation behavior obtaining module is configured to capture corresponding fault elimination information based on the fault scene established by the VR fault scene establishing unit, and the fault elimination judging module is configured to retrieve the fault elimination tree. Comparing the user actual behavior obtained by the user actual behavior acquisition module with the user behavior edge of the current state node of the fault elimination tree, and determining whether the fault elimination information is correct, and the comparison process is as follows: Whether the current state node of the fault tree is a final state node, if yes, the training task succeeds and ends; if not, the next state node of the matched user behavior edge is entered; if not, the task fails.
  • the multimedia teaching library unit includes relevant information for the training of the ship navigation device fault repair training.
  • the related materials include but are not limited to ppt, documents, pictures, animations of operation steps, and the like.
  • the enhanced training unit is directed to the user failure training task of the fault elimination unit, and uses the multimedia teaching library unit to push relevant multimedia training materials to the student, and returns to the fault elimination unit for intensive training. Allowing students to fully understand and learn the correct troubleshooting procedures for failed training tasks has reached the goal of training and learning.
  • the VR technology-based ship navigation equipment fault repairing training method and system categorizes fault classification of the navigation equipment to construct a fault classification tree, based on different final state nodes of the fault classification tree.

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Business, Economics & Management (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Abstract

La présente invention concerne un procédé et un système d'entraînement au dépannage pratique pour des dispositifs de navigation de navire basés sur la technologie de réalité virtuelle (VR). Le procédé comporte les étapes suivantes : 1. la construction d'une bibliothèque de base d'entraînement pratique de réalité virtuelle de dispositif de navigation de navire; 2. la sélection d'un arbre de suppression de défaut selon des défaillances définies, l'appel d'une base de données de modèle tridimensionnel de dispositif pour générer une scène de défaut de VR, et l'affichage d'un modèle tridimensionnel visualisé de nœuds d'état initial de l'arbre de suppression de défaut; 3. l'obtention de comportements de fonctionnement pratiques d'utilisateur et la comparaison des comportements avec un bord de comportement d'utilisateur au niveau de nœuds d'état actuel de l'arbre de suppression de défaut, s'il est apparié, puis la réalisation de l'étape 4, et, si tel n'est pas le cas, l'indication de la défaillance de la tâche et la réalisation de l'étape 5; 4. la détermination du fait que les nœuds d'état actuel de l'arbre de suppression de défaut sont des nœuds d'état d'étape final. Si oui, indiquer que la tâche d'entraînement pratique est réussie et terminée, et, sinon, entrer dans un nœud d'état suivant du bord de comportement d'utilisateur apparié et répéter l'étape 3; 5. pour la tâche d'entraînement pratique échoué à l'étape 3, utiliser une base de données d'enseignement multimédia pour envoyer les données associées aux étudiants et revenir à l'étape 3.
PCT/CN2018/087051 2017-05-16 2018-05-16 Procédé et système d'entraînement au dépannage pratique pour des dispositifs de navigation de navire basés sur une technologie de réalité virtuelle WO2018210257A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710344410.1A CN107168535B (zh) 2017-05-16 2017-05-16 基于vr技术的船舶通导设备故障检修实训方法及系统
CN201710344410.1 2017-05-16

Publications (1)

Publication Number Publication Date
WO2018210257A1 true WO2018210257A1 (fr) 2018-11-22

Family

ID=59815371

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/087051 WO2018210257A1 (fr) 2017-05-16 2018-05-16 Procédé et système d'entraînement au dépannage pratique pour des dispositifs de navigation de navire basés sur une technologie de réalité virtuelle

Country Status (2)

Country Link
CN (1) CN107168535B (fr)
WO (1) WO2018210257A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107168535B (zh) * 2017-05-16 2020-05-05 江苏海事职业技术学院 基于vr技术的船舶通导设备故障检修实训方法及系统
CN108831236A (zh) * 2018-06-22 2018-11-16 北京金恒博远科技股份有限公司 仿真培训方法及装置
CN108898677A (zh) * 2018-06-29 2018-11-27 北京金恒博远科技股份有限公司 操作检测方法及装置
CN109712078A (zh) * 2018-07-23 2019-05-03 永康市巴九灵科技有限公司 橱柜安防控制平台
CN109801548B (zh) * 2019-01-28 2021-01-05 重庆予胜远升网络科技有限公司 一种基于增强现实管网巡查检修终端
CN111696401A (zh) * 2019-03-15 2020-09-22 中国石油化工股份有限公司 石化企业直接作业环节隐患库及三维展示平台
CN111696400A (zh) * 2019-03-15 2020-09-22 中国石油化工股份有限公司 危化品运输罐车泄露事故处置vr模拟体验培训方法
CN110069139B (zh) * 2019-05-08 2022-03-25 上海优谦智能科技有限公司 Vr技术实现旅游教学实践的体验系统
CN110390167B (zh) * 2019-07-25 2023-01-13 远东电池江苏有限公司 一种通过三维软件来显示产品故障原因和故障表现的方法
CN111258431B (zh) * 2020-01-21 2023-08-11 华北电力大学（保定） 基于混合现实的汽轮机检修辅助系统
CN111399478B (zh) * 2020-03-23 2022-03-29 上海工程技术大学 一种基于vr的轨道车辆电气智能维修支持系统和方法
CN115331514A (zh) * 2022-06-27 2022-11-11 中国人民解放军海军士官学校 基于船舶机电装备故障信息模拟的实训系统
CN115328350A (zh) * 2022-06-27 2022-11-11 中国人民解放军海军士官学校 船舶机电装备虚拟环境中故障维修方案演示方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101527011A (zh) * 2009-03-27 2009-09-09 西安交通大学 一种实时故障处理流程自动导航方法和装置
CN104503442A (zh) * 2014-12-25 2015-04-08 中国人民解放军军械工程学院 军械装备故障诊断训练方法
CN104916182A (zh) * 2015-05-27 2015-09-16 北京宇航系统工程研究所 一种沉浸式虚拟现实维修与培训仿真系统
KR101636360B1 (ko) * 2015-10-26 2016-07-06 국방과학연구소 가상 현실을 이용한 가상 정비 훈련 시스템
CN106652686A (zh) * 2016-11-24 2017-05-10 国家电网公司 一种继电保护vr培训系统
CN107168535A (zh) * 2017-05-16 2017-09-15 江苏海事职业技术学院 基于vr技术的船舶通导设备故障检修实训方法及系统

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101527011A (zh) * 2009-03-27 2009-09-09 西安交通大学 一种实时故障处理流程自动导航方法和装置
CN104503442A (zh) * 2014-12-25 2015-04-08 中国人民解放军军械工程学院 军械装备故障诊断训练方法
CN104916182A (zh) * 2015-05-27 2015-09-16 北京宇航系统工程研究所 一种沉浸式虚拟现实维修与培训仿真系统
KR101636360B1 (ko) * 2015-10-26 2016-07-06 국방과학연구소 가상 현실을 이용한 가상 정비 훈련 시스템
CN106652686A (zh) * 2016-11-24 2017-05-10 国家电网公司 一种继电保护vr培训系统
CN107168535A (zh) * 2017-05-16 2017-09-15 江苏海事职业技术学院 基于vr技术的船舶通导设备故障检修实训方法及系统

Also Published As

Publication number Publication date
CN107168535B (zh) 2020-05-05
CN107168535A (zh) 2017-09-15

Similar Documents

Publication Publication Date Title
WO2018210257A1 (fr) Procédé et système d'entraînement au dépannage pratique pour des dispositifs de navigation de navire basés sur une technologie de réalité virtuelle
CN105139714B (zh) 一种电气化铁路牵引变电所的可视化仿真培训系统及方法
CN108492661A (zh) 一种三维虚拟实验培训系统
CN105788394A (zh) 无人机维修检测模拟训练系统
CN106057001A (zh) 一种职业教育模拟教学系统
US9472119B2 (en) Computer-implemented operator training system and method of controlling the system
CN105575206A (zh) 一种军械士兵职业技能鉴定虚拟考核与训练系统
CN105006183A (zh) 一种电能表检定实训教学考核模拟仿真方法
CN110244851A (zh) 基于虚拟现实技术的电力技能培训辅助方法及系统
CN105512978A (zh) 智慧模型互动学习考试系统建立方法
Gamboa-Ramos et al. Mobile application with augmented reality to improve learning in science and technology
JP2012226683A (ja) 表示装置画面の全点試験方法及び全点試験装置
Selek et al. Implementation of the augmented reality to electronic practice
Porouhan et al. Development of a process-aware instructor-aware multi-tabletop collaborative learning environment
Mubai et al. The Effectiveness of Learning Media Based on Augmented Reality in Vocational Education: A Meta Analysis
CN116341064B (zh) 基于3DMax建模的智能变电站云系统的建模系统和方法
CN111831117A (zh) 一种基于虚拟现实的高压电力设备试验培训方法
US20210081727A1 (en) Image object anomaly detection
CN114283634B (zh) 一种基于5g网络环境的虚拟同步课堂教学系统
WO2023097684A1 (fr) Procédé et système de mise en œuvre d'enseignement virtuel en laboratoire fondés sur la simulation 3d, et support et dispositif
CN113674569A (zh) 一种基于vr的远程继电保护测试培训系统及培训方法
CN114399804A (zh) 一种基于3d模拟虚拟实验室教学实现方法、系统、介质及设备
CN114023125A (zh) 基于虚拟现实技术的智能维修方法、智能维修培训系统
CN111223341A (zh) 一种基于虚拟化的教学实训智能评价的检验方法及系统
Erlindriyani et al. Web Service for Monitoring Activities VR Electrical Experiment in Indonesian Vocational High School

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18802938

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18802938

Country of ref document: EP

Kind code of ref document: A1