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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 38186-2019 | English | 125 |
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Performance requirements and test methods for advanced emergency braking system (AEBS) of commercial vehicles
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GB/T 38186-2019: Performance requirements and test methods for advanced emergency braking system (AEBS) of commercial vehicles
---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/GBT38186-2019
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.40
T 24
Performance requirements and test methods for
advanced emergency braking system (AEBS) of
commercial vehicles
Issued on. OCTOBER 18, 2019
Implemented on. MAY 01, 2020
Issued by. State Administration for Market Regulation;
Standardization Administration of the PRC.
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Terms and definitions... 5
4 Technical requirements... 6
5 Test methods... 10
Appendix A (Normative) Functional safety requirements... 13
Foreword
This Standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard was proposed by Ministry of Industry and Information Technology
of the PRC.
This Standard shall be under the jurisdiction of National Technical Committee
of Auto Standardization (SAC/TC 114).
Drafting organizations of this Standard. FAW Jiefang Automotive Co., Ltd.,
Anhui Jianghuai Automobile Group Corp., Ltd., China Automotive Technology
and Research Center Co., Ltd., Dongfeng Commercial Vehicle Co., Ltd.,
Tsinghua University, Chongqing Vehicle Test & Research Institute Co., Ltd.,
Shanghai Motor Vehicle Inspection Certification & Tech Innovation Center Co.,
Ltd., China Automotive Engineering Research Institute Co., Ltd., WABCO
Vehicle Control Systems (China) Co., Ltd., Zhejiang VIE Science & Technology
Co., Ltd., Zhejiang Asia-pacific Mechanical & Electronic Co., Ltd., Jiaozuo BRK
Control Technology Co., Ltd., Xiamen King Long United Automotive Industry
Co., Ltd., Higer Bus Co., Ltd., Xiamen Golden Dragon Bus Co., Ltd., Beiben
Trucks Group Co., Ltd., Neusoft Reach Automotive Technology (Shenyang) Co.,
Ltd.
Main drafters of this Standard. Chen Yuchao, He Shaobin, Liu Di, Li Yang, Luo
Yugong, Wang Kan, Yu Feng, Yang Liangyi, Wang Baiquan, Fu Zhiquan, Li
Weibing, Lai Enming, Feng Jie, Chen Qichang, Qiu Yuanhong, Chen Dulian,
Wang Yongfei, Liu Wei, Guo Liqun, Zhu Tong, Qing Peng, You Guoping, Cao
Jianyong, Huang Junfu, Cheng Weitao, Song Xiaoyi, Pu Lin, Shen Geng, Liu
Liren, Li Chun, Zhang Wenchao, Wang Weiguang, Fan Xiao.
Performance requirements and test methods for
advanced emergency braking system (AEBS) of
commercial vehicles
1 Scope
This Standard specifies the terms and definitions, technical requirements, and
test methods for advanced emergency braking system (AEBS) of commercial
vehicles.
This Standard applies to M2, M3, and N type vehicles equipped with an
advanced emergency braking system (AEBS).
2 Normative references
The following documents are indispensable for the application of this document.
For the dated references, only the editions with the dates indicated are
applicable to this document. For the undated references, the latest edition
(including all the amendments) are applicable to this document.
GB/T 3730.1-2001 Motor vehicles and trailers - Types - Terms and definitions
GB 4094-2016 Motor vehicles - Symbols for controls, indicators and tell-tales
GB/T 5620 Road vehicles - Braking of automotive vehicles and their trailers
- Vocabulary
GB 12676-2014 Technical requirements and testing methods for commercial
vehicle and trailer braking systems
GB/T 13594 Antilock braking performance and test procedure for motor
vehicles and their trailers
GB/T 34590-2017 (all parts) Road vehicles - Functional safety
GB 34660-2017 Road vehicles - Requirements and test methods of
electromagnetic compatibility
3 Terms and definitions
The terms and definitions defined in GB/T 5620 and the following ones apply to
this document.
3.1 Advanced emergency braking system; AEBS
The system which monitors the driving environment in front of the vehicle in real
time and automatically starts the vehicle’s braking system to slow down the
vehicle in the event of a possible collision hazard to avoid collision or mitigate
collision.
3.2 Subject vehicle
The vehicle subjected to the AEBS test in accordance with the requirements of
this Standard.
3.3 Target
The mass-produced ordinary passenger car having 4 or more seats and 2 or 4
side doors or the representative object of which the detection parameters can
represent the above vehicle and which is suitable for AEBS sensing detection
features.
3.4 Moving target
The target which moves in the same direction at a constant speed in the center
of the same lane ahead of the subject vehicle.
3.5 Stationary target
The target which remains motionless in the center of the same lane ahead of
the subject vehicle.
4 Technical requirements
4.1 General requirements
4.1.1 Vehicles equipped with AEBS shall be equipped with an antilock braking
system which meets the requirements of GB/T 13594.
4.1.2 The electromagnetic compatibility of AEBS shall meet the requirements
of GB 34660-2017.
4.2 Early-warning and warning signals
4.2.1 The AEBS shall be able to provide the driver with the appropriate early-
warning and warning signals as follows.
4.2.2 The collision early-warning described in 4.2.1 shall be at least two signal
early-warnings of acoustic, tactile, and optical signals. The timing of the early-
warning shall be such that the driver can react to the risk of collision, control the
vehicle in time, and premature or too frequent early-warnings are avoided to
annoy the driver.
4.2.7 When the AEBS is temporarily inoperable due to environmental factors
such as inclement weather, if an optical warning signal is provided to the driver,
the signal shall be a constant yellow signal. The failure warning signal specified
in 4.2.4 may be used.
4.3 Performance requirements
4.3.1 Basic performance
When AEBS is operating normally, it shall meet the following requirements.
4.3.2 Early-warning and startup performance under stationary target
conditions
4.3.2.1 TEST according to 5.4.The time setting of the collision early-warning
mode described in 4.2 shall meet the following requirements.
4.3.2.2 The speed decline in the warning phase shall not exceed 15 km/h or 30%
of the total speed decline of the test vehicle, whichever is higher.
4.3.2.3 The collision warning phase shall be followed by the emergency braking
phase.
4.3.2.4 The total speed decline of the subject vehicle when colliding with a
stationary target shall not be less than 10 km/h.
4.3.2.5 The emergency braking phase shall not begin before the time to collision
is less than or equal to 3 s.
4.3.3.5 After eliminating driver interference, at least 3 of 5 tests meet the
requirements of 4.3.3.1~4.3.3.4.
4.4 Warning signal after system failure
TEST according to 5.6.The always-on optical warning signal in accordance
with GB 4094-2016 shall be started at the latest when the vehicle is driving at
a speed of more than 15 km/h for 10 s. As long as the failure still exists, after
turning off the ignition switch and restarting it at rest, the vehicle shall maintain
its failure warning state.
4.5 Driver intervention performance
4.6 Anti-false response performance
TEST according to 5.8.The AEBS shall not send a collision early-warning and
shall not activate the emergency braking function.
5 Test methods
5.1 Test conditions
5.1.1 The test environment shall comply with the provisions of 5.1.2 of GB
12676-2014.
5.1.2 The horizontal visual range shall ensure that the target can be observed
throughout the test.
5.2 Vehicle conditions
5.3 Test target
5.3.1 The test may adopt an ordinary passenger car or a soft target.
5.3.2 Specific measures to ensure consistency and repeatability of targets shall
be documented in detail in the vehicle test report.
5.4 Early-warning and startup performance under stationary target
5.5.3 Except for slight adjustment of the steering wheel to prevent the vehicle
from shifting in direction, from the start of the test until the speed of the subject
vehicle is equal to the target speed, the driver shall not make any adjustments
to the subject vehicle.
5.6 Warning signal after system failure
5.6.1 By disconnecting the power supply of the AEBS component or the
electrical connection between the AEBS components, simulate circuit failure.
When simulating AEBS failure, it shall not cut off the circuit connection of the
driver warning signal specified in 4.2.1 and the AEBS manual off control device
specified in 4.5.
5.7 Driver intervention performance
5.7.1 TEST according to 5.5.In the warning phase, the driver steps on the
accelerator pedal, turns on the turn signal, performs other means specified by
the manufacturer, to check whether the response of the system can be
interrupted by the active action of driver intervention.
5.8 System anti-false response performance
5.8.1 PUT two ordinary passenger cars defined in GB/T 3730.1-2001 as follows.
5.8.2 The subject vehicle, from outside at least 60 m, begins to pass through
the middle of two stationary vehicles at a constant speed of (50±2)km/h. Except
for slight adjustment of the steering wheel to prevent the vehicle from shifting
in direction, during the test, it shall not make any adjustments to the subject
vehicle.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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