GB/T 39108-2020 Scenario simulation method for consumer product safety hazard identification
Some standard content:
ICS 03.120.01
A00
Ge
National Standard of the People's Republic of China
GB/T39108—2020
Consumer Product Safety
Hazard Identification
Scenario simulation method
Consumer product safetyHazard identification-Scenario simulation method released on 2020-10-21
State Administration for Market Regulation
National Standardization Administration Committee
Published
Implemented on 2020-10-21
Foreword
This standard is drafted in accordance with the rules given in GB/T1.12009. This standard was drafted by the National Technical Committee for Standardization of Consumer Product Safety (SAC/TC508) Present and focus. GB/T39108—2020
This standard was drafted by: Tsinghua University, China Institute of Standardization, Huawei Terminal Co., Ltd., and Hongda Communications Co., Ltd. The main drafters of this standard: Gao Qin, Rao Peilun, Liu Xia, Liu Xueqian, Chen Xuanwei, Zhu Dan, Wu Man, Liu Yang, Chen Yilin, Chen Qiyong, Li Fang, Wang Lizhi, Chen Qianwen, Qiao Feng.
a
I
GB/T39108—2020
Introduction
This standard proposes the use of virtual reality and physical scenes to build scenario simulation methods for consumer product safety Conduct hazard identification. The scenario simulation method has been used in aerospace, military training, medical care, training and education and other fields. However, there is no standard application of the scenario simulation method for hazard identification in the field of consumer goods.
Different from the traditional hazard identification method, the scenario simulation method not only evaluates after the accident occurs, but the most important thing is to predict before the accident occurs. In terms of prior prediction, the scenario simulation method obtains feedback information in a timely manner through natural interactions between consumers and consumer products. In addition to experts and relevant recall, complaint and other documents, the data sources can also obtain real-time data. This is a traditional hazard identification method in products. This cannot be done during the design stage. In terms of post-event evaluation, the scenario simulation method uses observation and video recording of the evaluation process to discover operational details that are not easily noticed during the operation process, and assists in interviews to understand consumers' thoughts and attitudes in a timely manner. Therefore, using scenario simulation methods to conduct hazard analysis, testing and recording through specific equipment, obtaining timely, real, and complete data, and strictly controlling various hazard factors has greater advantages than traditional hazard identification methods. || tt | Scenario design, execution of measurements, data collection and results analysis. This standard is applicable to all relevant parties in consumer product safety to carry out hazard identification during the design, production and use (including maintenance) stages of consumer products. Normative References
The following documents are essential for the application of this document. For dated references, only the dated version applies to this document. For undated referenced documents, the latest version (including all amendments) applies to this document. GB/T38259—2019
Information technology
General specification terms and definitions for virtual reality head-mounted display devices
3
The following terms and definitions apply to this document. 3.1
Consumer products consumerproduct
Products designed and produced mainly but not limited to for personal use, including product components, parts, accessories, instructions for use and packaging. [GB/T35248—2017, Definition 2.2] 3.2
consumerproduct safety
Consumer product safety
Consumer products are exempt from unacceptable risks. [GB/T28803—2012, Definition 3.4] 3.3
Injury
Damage to human health or property.
Note: Adapted from GB/T20002.4-2015, definition 3.1. 3.4
Hazard (source) hazard
Potential sources that may lead to harm (3.3). [GB/T20002.4-2015, Definition 3.2]3.5
Jhazard identification
Hazard identification
The process of discovering, enumerating and describing risk elements. [GB/T28803—2012, Definition 3.7]
GB/T39108—2020
3.6
Scenario simulation method
scenariosimulationmethod
Use virtual reality or real objects In the form of scenes, simulate situations similar to actual situations, and conduct relevant testing and analysis methods 3.7
virtualreality; VR
Virtual reality
With computer technology as the core, it is generated and a certain range A digital environment that is similar to the real environment in terms of sight, hearing, touch, etc. Users can interact with it with the help of necessary equipment to get the feeling and experience of visiting the real environment. General procedures and basic requirements
4
4.1 Process Overview
The assessment form of scenario simulation method can be divided into virtual reality scenes and physical scenes. The general process includes simulation scene design, execution evaluation, data collection and result analysis (see Figure 1): a) Simulation scene design : Determine the consumer products that need to be evaluated, select the evaluation form (choose one or a combination of the two) according to the judgment conditions, design the tasks that participants need to complete during the evaluation, and build the scene; execute the evaluation: prepare the evaluation environment, prepare evaluation materials, and participate in the test selection and evaluation of candidates; b)
c)
data collection and result analysis. Among them, data collection includes subjective data and objective data collection. Please see Appendix A for an example of assessment based on the scenario simulation method. 2
Execute evaluation
Simulation scene design
No virtual setting
Real scene
Conduct simulation
Test in virtual reality scene| |tt||No
Preparation before assessment
Does it meet the virtual
real scene construction
conditions? ] Test
Material and participant selection
Conduct evaluation
Xiangjingran points
Start
Determine consumer products
Select evaluation form| |tt||Data collection
Result analysis
End
Note: If both scene conditions are met, choose one, or use both forms. Does it meet the physical
scene construction conditions?
Select the physical scene
Assessment task design
Construction of the physical scene
Testing in the physical scene
Figure 1 General process of the scenario simulation method|| tt||Preparation before assessment
GB/T39108—2020
Simulate the scene without building the actual tower
According to the preparation before assessment, prepare for the actual operation
Test environment, testing of object scenes
Materials and participant selection
Evaluation
3
GB/T39108—2020
4.2||tt ||2Basic Requirements
4.2.1
Common Requirements
The selection of scenes should meet the following requirements:
a)
The degree of simulation is close to the real usage situation: b)
Ensure that participants can complete relevant tests and terminate the experiment at any time: c)
The built scene supports the evaluation task in terms of space and facility completeness 4.2.2
Requirements for selecting virtual reality scenes
4.2.2.1
Basic requirements
Can simulate the visual appearance of consumer products (such as shape, material, texture, color, Reflective properties, etc.), physical properties (such as rigid body dynamics, elastic simulation, fluid simulation), other chemical properties, sound and other properties 4.2.2.2
Hardware requirements
The hardware should meet the following requirements:
a)
From the perspective of consumer product evaluation, participants should perform actions in a certain space, and different application scenarios may involve gesture recognition.
b)
The selection of virtual reality glasses should consider factors such as simulation, smooth speed, and degree of interaction. The parameters of virtual reality equipment should meet the requirements of supporting platforms, wireless transmission, computer host, screen clarity, tracking mode, handle controller, positioning accuracy, anti-occlusion, movable range, and symmetry.
If a head-mounted display device is used, the device should comply with the provisions of GB/T38259-2019. c)
d)
At least meet the minimum configuration of virtual reality hardware system. 4.2.2.3
Software requirements
Software and VR development engines for virtual scene modeling and development, video processing, audio editing, image processing should be selected. 4.2.2.4
Modeling requirements
Modeling should meet the following requirements:
a) Modeling of objects with interactive functions should give priority to the use of graphics-based modeling methods or virtual modeling technology based on the mixture of graphics and images;
Modeling of non-key research objects such as objects that do not require interaction or environmental backgrounds should use graphics-based modeling methods or b)
virtual modeling technology based on the mixture of graphics and images. Requirements for selecting physical scenarios
4.2.3
The selection of physical scenarios should meet the following requirements: the physical consumer products are available;
a)
b)
The consumer products are of qualified quality;
The hazards can be observed and will not cause real harm. c)
4
5
Simulation scenario design
5.1
Determine the consumer products
Determine the consumer products to be identified for hazards according to the evaluation needs and select the evaluation form
5.2
Select the appropriate evaluation form according to 4.2.
5.3
Assessment task design
5.3.1 Overview
GB/T39108—2020
Design the tasks that participants need to complete in the assessment, which are divided into determining the usage scenario, determining the task, and describing the task. Determine the usage scenario
5.3.2
Determine the common usage scenarios of the consumer product to be evaluated. 5.3.3 Determine the task
Tasks can be collected from the perspective of key steps in the use of consumer products in order to make the tasks more representative. Tasks reflect the actual use of consumer products by participants.
Should include the following perspectives:
a) The importance of the task;
b)
The frequency of the task;
The difficulty of the task;
c)
d)
The time required to complete the task.
5.3.4
Describing the task
should follow the following principles:
As realistic as possible. The following methods can be used as reference:a)
Describe the environment that the participants are familiar with in real life, including some real-life details, such as "prepare to cook after returning home in the afternoon", so that the participants can integrate into the roleb)
Easy to understand.
c)
Only give the participants the information they need to complete the task. 5.4 Scene Construction
5.4.1 Construction of Virtual Reality Scene
The construction of virtual reality scene should meet the requirements in 4.2.2 and should include the following elements: a)
Include various environmental elements in the use scenario of the evaluated consumer product, such as light and sound; b)
Include other artificial products in the use environment of the evaluated consumer product, and their mutual relationships are consistent with the actual situation, such as the placement position, etc. Construction of Physical Scene
5.4.2
The physical scene should meet the requirements for selecting the physical scene in 4.2.35
GB/T39108—2020
6 Execution of Evaluation
6.1
Evaluation in Virtual Reality Scene
6.1.1
Preparation before evaluation
Preparation before evaluation mainly includes preparation of evaluation environment, preparation of evaluation materials, selection of participants, etc. The specific requirements are as follows: Preparation of evaluation environment should meet but not be limited to the following requirements: a)www.bzxz.net
1) Ensure that the evaluation process is not disturbed by the outside world. The commonly used method is to post the words "Testing, Do Not Disturb" on the door and mute the phones of participants and evaluators before the evaluation begins; 2)
Ensure the space where the evaluation tasks can be completed, so that participants have enough space to complete all experimental tasks; Place items in the evaluation environment, and place items in the evaluation environment appropriately to avoid participants bumping into obstacles. 3)
Hazards:
4)
Debug virtual reality equipment.
Preparation of evaluation materials should include the following and meet the following requirements: b)
Informed consent form. Its contents should include:
1)
Purpose and experimental process;
Possible risks in the process;
The purpose and property rights of the data;
Whether the information of the participants is confidential;
The rights of the participants (voluntarily participating in the assessment, having the right and freedom to stop or withdraw from the test at any time, the right to appeal the experiment, etc.).
2) Assessment instructions. There are no fixed requirements for its content, and it should be selected according to the actual needs of the assessment. Usually includes: background introduction;
Task introduction;
Process introduction;
Precautions.
3) Questionnaire. Whether the participants need to fill in the questionnaire can be determined according to the purpose of the assessment. The questionnaire includes questionnaires related to participant information and questionnaires related to the assessment. Questionnaires related to participant information usually include the following: personal information such as gender, age, and education; -Specific skill level or knowledge level, etc.; actual use and familiarity of the product, etc. Questionnaires related to the assessment usually include the following: the difficulty of the task; the degree of danger of the task in real life; the possibility of a certain hazard occurring in real life; the severity of a certain hazard in real life. 4) Interview outline. Usually includes: the participants' understanding of the task; the participants' thoughts and feelings when performing the assessment task; the hazards that the participants think may occur in the assessment task; how the participants take measures to avoid possible hazards; what hazards the participants think are not found in the assessment task but may occur in real life; 63 Determine the tasks
Tasks can be collected from the perspective of key steps in the use of consumer products in order to make the tasks more representative. The tasks reflect participants' actual use of consumer products.
should include the following perspectives:
a) Importance of the task;
b)
Frequency of the task;
Difficulty of the task; || tt||c)
d)
The completion time required for the task.
5.3.4
Describing tasks
should follow the following principles:
The environment that the test taker is familiar with in real life includes some real life details, such as "getting ready to cook when I get home in the afternoon", so that the test taker can integrate into the role b)
is easy to understand.
c)
Give participants only the information they need to complete the task. 5.4 Scene construction
5.4.1 Construction of virtual reality scene
The construction of virtual reality scene should meet the requirements in 4.2.2 and should include the following elements: a)
Including evaluation Various environmental elements in the usage scenario of consumer goods, such as light and sound; b) Food
includes other artifacts in the usage environment of consumer goods, and their mutual relationships are consistent with the actual situation, such as placement and other physical scenes Build
5.4.2
The physical scene should meet the requirements for selecting the physical scene in 4.2.3 5
GB/T39108—2020
6 Execute evaluation||tt| |6.1
Evaluation in virtual reality scenes
6.1.1
Preparation before evaluation
Preparation before evaluation mainly includes preparation of evaluation environment, preparation of evaluation materials, and participants selection, etc. The specific requirements are as follows: The preparation of the evaluation environment should meet but not be limited to the following requirements: a)
1) Ensure that the evaluation process is not disturbed by the outside world. The commonly used method is to change the "testing, do not disturb" The words are posted on the door, and the phones of the participants and evaluators are muted before the evaluation begins; 2)
Ensure that the evaluation tasks can be completed, so that the participants have enough space to complete all tasks. Experimental tasks; Place items in the evaluation environment. Place items in the evaluation environment appropriately to avoid participants from hitting obstacles. 3)
Hazards:
4)||tt| |Debug virtual reality equipment.
Assessment material preparation should include the following content and meet the following requirements: b)
Informed Consent Form. The content should include:
1)
Purpose and experimental process;
Risks that may occur during the process;
The purpose and property rights of the data;
Whether the participant's information is confidential;
The rights of the participant (voluntary participation in the evaluation, the right and freedom to stop or withdraw from the test at any time, the right to complain about the experiment, etc.).
2) Assessment guide. There are no fixed requirements for its content and should be selected based on the actual needs of the assessment. Usually includes: background introduction;
task introduction;
process introduction;
precautions.
3) Questionnaire. It can be determined based on the purpose of the assessment whether participants are required to fill in a questionnaire. The questionnaire includes questionnaires related to participant information, questionnaires related to assessment, etc. Questionnaires related to participant information usually include the following: personal information such as gender, age, education, etc.; - specific skill level or knowledge level, etc.; actual use and familiarity with the product, etc. Questionnaires related to assessment usually include the following: the difficulty of the task;
the degree of danger of the task in real life; the possibility of a certain hazard occurring in real life; the degree of danger of a certain hazard in real life severity. 4) Interview outline. Usually includes:
The participant’s understanding of the task;
The participant’s thoughts and feelings when performing the evaluation task; The harm that the participant believes may occur during the evaluation task; Participation in the test How do participants take measures to avoid possible hazards? What other hazards do participants think are not found in the assessment tasks but may occur in real life? 6
3 Determine the tasks
Tasks can be collected from the perspective of key steps in the use of consumer products in order to make the tasks more representative. The tasks reflect participants' actual use of consumer products.
should include the following perspectives:
a) Importance of the task;
b)
Frequency of the task;
Difficulty of the task; || tt||c)
d)
The completion time required for the task.
5.3.4
Describing tasks
should follow the following principles:
The environment that the test taker is familiar with in real life includes some real life details, such as "getting ready to cook when I get home in the afternoon", so that the test taker can integrate into the role b)
is easy to understand.
c)
Give participants only the information they need to complete the task. 5.4 Scene construction
5.4.1 Construction of virtual reality scene
The construction of virtual reality scene should meet the requirements in 4.2.2 and should include the following elements: a)
Including evaluation Various environmental elements in the usage scenario of consumer goods, such as light and sound; b) Food
includes other artifacts in the usage environment of consumer goods, and their mutual relationships are consistent with the actual situation, such as placement and other physical scenes Build
5.4.2
The physical scene should meet the requirements for selecting the physical scene in 4.2.3 5
GB/T39108—2020
6 Execute evaluation||tt| |6.1
Evaluation in virtual reality scenes
6.1.1
Preparation before evaluation
Preparation before evaluation mainly includes preparation of evaluation environment, preparation of evaluation materials, and participants selection, etc. The specific requirements are as follows: The preparation of the evaluation environment should meet but not be limited to the following requirements: a)
1) Ensure that the evaluation process is not disturbed by the outside world. The commonly used method is to change the "testing, do not disturb" The words are posted on the door, and the phones of the participants and evaluators are muted before the evaluation begins; 2)
Ensure that the evaluation tasks can be completed, so that the participants have enough space to complete all tasks. Experimental tasks; Place items in the evaluation environment. Place items in the evaluation environment appropriately to avoid participants from hitting obstacles. 3)
Hazards:
4)||tt| |Debug virtual reality equipment.
Assessment material preparation should include the following content and meet the following requirements: b)
Informed Consent Form. The content should include:
1)
Purpose and experimental process;
Risks that may occur during the process;
The purpose and property rights of the data;
Whether the participant's information is kept confidential;
The rights of the participant (voluntary participation in the evaluation, the right and freedom to stop or withdraw from the test at any time, the right to complain about the experiment, etc.).
2) Assessment guide. There are no fixed requirements for its content and should be selected based on the actual needs of the assessment. Usually includes: background introduction;
task introduction;
process introduction;
precautions.
3) Questionnaire. It can be determined based on the purpose of the assessment whether participants are required to fill in a questionnaire. The questionnaire includes questionnaires related to participant information, questionnaires related to assessment, etc. Questionnaires related to participant information usually include the following: personal information such as gender, age, education, etc.; - specific skill level or knowledge level, etc.; actual use and familiarity with the product, etc. Questionnaires related to assessment usually include the following: the difficulty of the task;
the degree of danger of the task in real life; the possibility of a certain hazard occurring in real life; the degree of danger of a certain hazard in real life severity. 4) Interview outline. Usually includes:
The participant’s understanding of the task;
The participant’s thoughts and feelings when performing the evaluation task; The harm that the participant believes may occur during the evaluation task; Participation in the test How do participants take measures to avoid possible hazards? What other hazards do participants think are not found in the assessment tasks but may occur in real life? 6
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