GB/T 37436-2019 English PDF (GBT37436-2019)

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GB/T 37436-2019: Intelligent transportation systems -- Extended-range backing aid systems -- Performance requirements and test procedures
GB/T 37436-2019
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.15;35.240.60
T 07
Intelligent transportation system - Extended-range
backing aid systems - Performance requirements and
test procedures
[ISO 22840:2010, Intelligent transport system - Devices to aid reverse
manoeuvres - Extended-range backing aid systems (ERBA), NEQ]
ISSUED ON: MAY 10, 2019
IMPLEMENTED ON: DECEMBER 01, 2019
Issued by: State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3 
Introduction ... 4 
1 Scope ... 5 
2 Normative references ... 5 
3 Terms and definitions ... 5 
4 Symbols ... 8 
5 Functional and performance requirements ... 8 
6 Test requirements ... 16 
Appendix A (Informative) Detection method of system delay time ... 25 
Appendix B (Informative) Test example of extended-range backing aid system
... 27 
References ... 32 
Intelligent transportation system - Extended-range
backing aid systems - Performance requirements and
test procedures
1 Scope
This standard specifies the function and performance requirements, as well as
the test requirements, of the extended-range backing aid system.
This standard applies to light vehicles, mainly including passenger cars, small
passenger cars and ordinary trucks in commercial vehicles, excluding
motorcycles. Refer to the classification of vehicles in GB/T 3730.1.
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) is applicable to this standard.
GB/T 21436-2008 Parking distance monitoring and warning device for motor
vehicle
ISO 15006 Road vehicles - Ergonomic aspects of transport information and
control systems - Specifications for in-vehicle auditory presentation
ISO 15008 Road vehicles - Ergonomic aspects of transport information and
control systems - Specifications and test procedures for in-vehicle visual
presentation
ISO 16750 Road vehicles - Environmental conditions and testing for
electrical and electronic equipment
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
b) Automatic execution;
c) A warning signal is generated when the fault is diagnosed.
5.1.4 Driver interface and information strategy
5.1.4.1 Information prompt method
Audible method is the information prompt method that the system shall have;
other methods, such as visual method, can be used as a supplement.
5.1.4.2 Audible information
The system's audible information prompt shall meet the following conditions:
a) The audible information prompt shall meet the requirements of ISO 15006.
b) The audible information prompt shall also meet the basic requirements as
follows:
1) The distance indication warning can be expressed, either audibly or
visually. Corresponding to the distance, the distance indication warning
must be coded into at least two segments; each segment is expressed
as a different repetition frequency. The basic criterion is that the high
repetition frequency or continuous corresponds to a relatively short
distance. Synthetic or recorded voices can also be used as audible
reminders. The system shall keep warning, when the obstacle is
continuously detected; stop warning, when the obstacle is no longer
detected. The audible information can be paused, after a period of time,
but the system shall remain active. As long as the distance between the
vehicle and the obstacle decreases, the audible information shall
automatically start again. If the distance to the obstacle increases, the
audible signal will remain in the off state.
2) Presence warnings can be expressed audibly, visually, or a combination
of both. They shall be coded in a certain way, to make it clearly inform
the driver, that there are obstacles in the zone of regard. The presence
warning can be combined with the distance indication warning; the
synthesized or pre-recorded voice can also be used. The system shall
keep warning, when the obstacle is continuously detected; stop
warning, when the obstacle is not detected. The audible information
lasts for at least 1s; it can be paused, BUT the system shall remain
active. As long as the distance between the vehicle and the obstacle
decreases, the audible signal shall automatically start again. If the
distance to the obstacle increases, the audible signal will remain in the
off state.
3) Dynamic warnings shall be presented, either by auditory means or
supplemented with visual means. The dynamic warning shall be coded
in a certain way, so that the driver immediately notices the warning.
Dynamic warning shall be distinguished from distance indication
warning and presence warning. Meanwhile, it shall prompt the driver to
take immediate action. It may use synthesized or pre-recorded speech,
as a dynamic warning.
4) The system's enable/disable status prompts and fault/interference
prompts can be expressed, either in audible or visual means; however,
they shall be clearly distinguished from other signals. It may use
synthesized or pre-recorded speech, as a warning method. The status
prompt can be paused, after a period of time, BUT it shall remain active.
5) The driver can be allowed to manually suppress the audible warning
temporarily. The audible warning shall be in the inhibited state, until the
driver changes its state to start. When the system is activated next time,
the audible warning shall be automatically restored.
6) This standard does not specify the state switching, between the audible
alarm types (distance indication warning, presence warning, dynamic
warning). The general principle of state switching is to keep the audible
state smooth and intuitive. It shall reduce the frequent switching,
between alarm types; this is especially important for dynamic warnings.
7) If the system does not issue a presence warning, within 5 m of the entire
zone of regard, OR the warning duration is less than 3 s, it shall provide
a special diagnostic mode. When in the diagnostic mode, the system
shall issue a presence warning, within 5 m of the entire zone of regard.
The warning response time shall last, at least 3 seconds, without
interruption. The diagnostic mode is only used, by technical service
personnel, for standard compliance testing. This standard does not
restrict how to enter or exit the diagnostic mode.
5.1.4.3 Visual information
The system's visual information prompt shall meet the requirements as follows:
a) The visual information prompt shall meet the requirements of ISO 15008.
b) The visual information prompt shall also meet the basic requirements as
follows:
1) The visual information is coded into at least two levels AND expressed
in different colors. For example, red or amber means collision is
imminent; yellow means attention. If different or more warning levels
are used, they shall not conflict with the above basic guidelines.
2) Auditory-based readiness for service indication system: If the system's
readiness for service indication is based on auditory perception, its
activation delay refers to the time, FROM the end of the signal of the
readiness for service indication, TO the moment when the system
detects an obstacle and issues a warning. The obst...