GB/T 41797-2022 PDF English
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GB/T 41797-2022: Performance requirements and test methods for driver attention monitoring system---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT41797-2022
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.020
CCS T 40
Performance requirements and test methods for driver
attention monitoring system
Issued on. OCTOBER 12, 2022
Implemented on. MAY 01, 2023
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 4
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 5
4 General requirements... 6
4.1 Functional requirements... 6
4.2 Self-inspection... 6
4.3 System state transition and information prompt requirements... 7
4.4 Fault indication... 7
4.5 Electromagnetic compatibility... 7
5 Performance requirements... 8
5.1 Requirements for driver identification ability... 8
5.2 Requirements for detection rate and accuracy rate... 9
6 Test methods... 9
6.1 Test conditions... 9
6.1.1 Test environmental conditions... 9
6.1.2 Test tool conditions... 9
6.2 Driver identification ability test... 10
6.2.1 Test target... 10
6.2.2 Test procedure... 10
6.3 Test for detection rate and accuracy rate... 10
6.3.1 Test target... 10
6.3.2 Light source... 10
6.3.3 Test procedure... 10
Appendix A (Normative) Humanoid robot... 13
A.1 General... 13
A.2 Requirements... 13
A.2.1 General requirements... 13
A.2.2 Feature requirements... 16
A.2.3 Installation requirements... 17
1 Scope
This document specifies the general requirements, performance requirements and test
methods for driver attention monitoring system (hereinafter referred to as the “system”).
This document applies to M and N vehicles which are equipped with a driver attention
monitoring system based on image recognition technology. It can be used as a reference
for the implementation of other systems with the same function.
2 Normative references
The following documents are normatively referenced in this document and are
indispensable for its application. For dated references, only the version corresponding
to that date is applicable to this document; for undated references, the latest version
(including all amendments) is applicable to this document.
GB/T 10000, Human dimensions of Chinese adults
GB 10810.3, Spectacle lenses and related eye wear - Transmittance specifications
and test methods
GB 34660, Road vehicles - Requirements and test methods of electromagnetic
compatibility
GB/T 39263, Road vehicles - Advanced driver assistance systems - Terms and
definitions
3 Terms and definitions
Terms and definitions determined by GB/T 39263 and the following ones are applicable
to this document.
3.1 Driver attention monitoring system; DAMS
A system that monitors the driver’s state in real time and sends a prompt message when
it is confirmed that the driver is distracted.
3.2 Distraction
The state in which the driver is unable to concentrate on performing the driving task
due to fatigue driving, interference from the external environment, or actions unrelated
to driving while driving the vehicle.
3.3 Abnormal head pose
The behavior where the front-back tilt angle and horizontal rotation angle of the head
exceed the normal range when the driver raises the head, lowers the head, or shakes the
head left and right.
3.4 Accuracy rate
The ratio of the number of correct detections of a behavior to the number of detection
events (number of correct detections + number of false detections).
3.5 Detection rate
The ratio of the number of correct detections of a behavior to the number of real events
(number of correct detections + number of missed detections).
as real events.
3.6 Humanoid robot
A robot, with the appearance of human, which is programmed to mimic human
movements.
4 General requirements
4.1 Functional requirements
The system shall be equipped with the functions of real-time monitoring of the driver’s
eye closing, abnormal head pose, hand-held phone answering and calling, and can be
provided with the function of monitoring the driver’s yawning or smoking behavior,
and sending a prompt message when the corresponding conditions are met.
4.2 Self-inspection
The system shall perform self-inspection after power-on and shall have at least the
following self-inspection functions.
4.3 System state transition and information prompt requirements
When the system is fault-free, the following requirements shall be met.
4.4 Fault indication
In case of malfunction of the system, the system shall have a fault indication function
and shall at least continuously send an indication to the driver in an optical manner. The
indication shall be distinguished from other prompts in the system and shall be visible.
4.5 Electromagnetic compatibility
The electromagnetic compatibility of the system shall meet the requirements of GB
34660.
5 Performance requirements
5.1 Requirements for driver identification ability
Carry out the test according to 6.2.When the behavior of the test targets meets the
prompt message conditions in Table 1, the number of people, whose behaviors are all
correctly identified by the system and to whom a prompt message meeting the
requirements of 4.3 d) is sent out, shall not be less than 2/3 of the total number of test
personnel. Among all behaviors of the test personnel whose behaviors are not fully
identified, there shall be at least 1 time when the system identifies the corresponding
behavior and sends out a prompt message.
5.2 Requirements for detection rate and accuracy rate
Carry out the test according to 6.3.When the test target behavior meets the prompt
message conditions in Table 1, the system shall send out a prompt message that meets
the requirements of 4.3 d) within 1.5 s, where the detection rate and accuracy rate shall
be greater than or equal to 95%.
6 Test methods
6.1 Test conditions
6.1.1 Test environmental conditions
The test environmental conditions shall meet the following requirements.
6.1.2 Test tool conditions
Test tools shall meet the following requirements.
6.2 Driver identification ability test
6.2.1 Test target
The test targets shall be at least 3 adults who have no facial and eye defects, meeting
the dimensional requirements of GB/T 10000 for height, eye height in sitting posture,
and head shape and face length for the 18 ~ 60-year-old group.
6.2.2 Test procedure
Under the daytime illumination intensity, when the system is active and functioning
normally, the test targets perform the behaviors in Table 1 in the driving area. Each
person performs each behavior 6 times, and the interval between single behaviors shall
be at least 5 s.
6.3 Test for detection rate and accuracy rate
6.3.1 Test target
The test target is a humanoid robot that meets the requirements of Appendix A.
6.3.2 Light source
The light source shall be able to move according to the position of the light source
shown in Figure 1, with the central position of the first row of seats of the vehicle as
the center, where α is 7.5°, β is 10°, and the light source incident angle γ is 30° ~ 45°.
6.3.3 Test procedure
Carry out the test under day and night conditions, respectively. When the system is
active and functioning normally, the test target shall perform the behaviors in Table 2
in the driving area. See Table 3 for the number of tests. The interval between each single
behavior shall be greater than 5 s.
Appendix A
(Normative)
Humanoid robot
A.1 General
This Appendix specifies the technical requirements for humanoid robots used for
system performance tests.
A.2 Requirements
A.2.1 General requirements
A.2.1.1 Humanoid robot dimensions
The humanoid robot dimensions shall comply with the provisions of GB/T 10000 on
the basic value of human body dimensions for adults aged 18 ~ 60 years old. Table A.1
shows the value range for the dimensions of each part; Figures A. 1 ~ A.4 show the
corresponding positions.
A.2.1.2 Eyes
The horizontal width range of the eyes of the humanoid robot shall be 30.0 mm ~ 33.0
mm, and the maximum vertical height range shall be 5.0 mm ~ 11.7 mm. The eye
dimensions are shown in Figure A.5.
A.2.1.3 Mouth
The maximum vertical height range of the mouth of the humanoid robot shall be 28.9
mm ~ 33.9 mm, and the maximum horizontal width range shall be 46.9 mm ~ 56.9 mm.
A.2.1.4 Head movement range
The head rotation range of the humanoid robot shall be -90° ~ 90°; the head-up limit
shall be 45°; the head-down limit shall be 45°.
A.2.2 Feature requirements
A.2.2.1 Feature points
When it is detected by the same driver attention monitoring system, the humanoid robot
shall be able to detect the data of at least 68 feature points, which is consistent with the
data of feature points detected by real people.
A.2.2.2 Skin material
The color purity range of humanoid robot skin color shall be 27.40% ~ 32.70%, and the
distribution range of skin light reflectance shall be 19.74% ~ 26.26%.
A.2.3 Installation requirements
A.2.3.1 Head
The installation plane of the head of the humanoid robot shall be horizontal, and the
deviation angle shall be within 2.5°.
A.2.3.2 Arm
The upper arm of the humanoid robot shall be close to the torso and perpendicular to
the centerline, as shown in Figure A.6.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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