GB/T 26776-2011 English PDF (GBT26776-2011)

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GB/T 26776-2011: Road vehicles -- Alarm systems for commercial vehicles of maximum authorized total mass greater than 3.5 t
GB/T 26776-2011
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.10
T 36
Road vehicles - Alarm systems for commercial vehicles of
maximum authorized total mass greater than 3.5t
(ISO 15763:2002, Road vehicles - Alarm systems for buses and commercial vehicles
of maximum authorized total mass greater than 3.5t, MOD)
ISSUED ON: JULY 20, 2011
IMPLEMENTED ON: JANUARY 01, 2012
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Normative references ... 5 
3 Terms and definitions... 6 
4 Requirements ... 7 
5 Test methods ... 13 
6 Marks and identifiers ... 21 
Annex A (informative) Example of functional test of volumetric protection system . 23 
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard uses redrafting method to modify and adopt ISO 15763:2002 “Road
vehicles - Alarm systems for buses and commercial vehicles of maximum authorized
total mass greater than 3.5t”.
The technical differences and reasons between this Standard and ISO 15763:2002 are
as follows:
-- changed ISO 10605 used as reference to GB/T 19951 that is identically adopted
in China;
-- changed 70/388/EEC used as reference to GB 15742 that is same in relevant
technical contents;
-- CISPR 12 quoted is the vehicle standard while this system shall use the component
test method. Therefore, used GB 18655 to replace CISPR 25;
-- changed IEC 60068-2-11 to GB/T 2423.17 that is identically adopted in China;
-- changed IEC 60068-2-29 to GB/T 2423.6 that is identically adopted in China;
-- deleted ISO 7637-1 (the part about terms in ISO 7637-1) because the test pulse in
5.10.1 corresponds to ISO 7637-2;
-- changed ISO 7637-2 to GB/T 21437.2 that is identically adopted in China;
-- deleted the relevant content used as reference in ISO 512 as well as relevant
contents in ISO 15763:2002 because ISO 512 has been abolished;
-- deleted ISO 1176 and ISO 3833, because these two standards have been
transformed and the content is well known to the industry, it is unnecessary to cite
them again;
-- to be consistent with GB/T 3730.1, commercial vehicles (including passenger cars,
semi-trailer tractors and trucks) are used in the standard name and scope, and the
word “buses” is deleted;
-- the definition of key is not easy to understand, the definition of scanner is
inaccurate, and it is not necessary to define these two words, so delete them;
-- the subclauses 5.11 and 5.14 in ISO 15763:2002 are both tests for sound warning
devices. This standard incorporates the sound level test of the original text 5.14
into 5.11, which is easier to understand and operate;
-- IEC 60529 is changed to ISO 20653, the protection standard specially used for
Road vehicles - Alarm systems for commercial vehicles of
maximum authorized total mass greater than 3.5t
1 Scope
This Standard specifies the terms, performance requirements and test methods for alarm
systems for commercial vehicles (VAS) of maximum authorized total mass greater than
3.5t.
This Standard applies to vehicle alarm systems that test/detect and warn of abnormal
opening of doors, trunk lids, engine hoods, panic situations, cab tilting and trailer
decoupling or power failure, including the vehicle alarm system of original vehicle
equipment and the vehicle alarm system that is subsequently installed.
Annex A gives 3 test examples for the functional test of the volumetric protection
system.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 2423.6, Environmental testing for electric and electronic products - Part 2:
Test methods - Test Eb and guidance: Bump (GB/T 2423.6-1995, idt IEC 60068-2-
29:1987)
GB/T 2423.17, Environmental testing for electric and electronic products - Part 2:
Test method - Test Ka: Salt mist (GB/T 2423.17-2008, IEC 60068-2-11:1981, IDT)
GB 15742, Performance requirements and test methods of horn for motor vehicles
GB 18655, Vehicles, boats and internal combustion engines - Radio disturbance
characteristics - Limits and methods of measurement for the protection of on-board
receivers (GB 18655-2002, idt IEC/CISPR 25:1995)
GB/T 19951, Road vehicles - Disturbances test methods for electrical/electronic
component from electrostatic discharge (GB/T 19951-2005, ISO 10605:2001, IDT)
GB/T 21437.2, Road vehicles - Test method of electrical disturbances from
conduction and coupling - Part 2: Electrical transient conduction along supply lines
only (GB/T 21437.2-2008, ISO 7637-2:2004, IDT)
a part of the system that enables the VAS to start working or stop working
3.8 warning device
a system component that alerts on alarm condition
3.9 panic warning device
a system component that enables the warning device to immediately enter the alarm
condition regardless of whether the VAS is set or unset
3.10 status display
a system component that shows VAS status
3.11 immobilizer
a system component that prevents the use of the vehicle's own engine
3.12 perimeter protection
system functions designed to detect and warn of improper opening of doors, trunk lids,
hoods, panic exits, cab tilt, and trailer decoupling or power loss
3.13 volumetric protection
system functions designed to detect intrusions into the cab/passenger compartment and
actions inside
4 Requirements
4.1 System description
The VAS shall include one or more detectors/sensors, a control unit with means for
setting/unsetting and triggering the alarm, power supply and alarm means.
The VAS shall include at least one audible warning device. It can also include light
alarm or wireless warning device (wireless warning device shall comply with relevant
regulations on the use and management of wireless equipment), or a combination of the
above-mentioned alarms. It may also include light indicators that provide VAS status
or status change information, immobilizer, and other equipment that meets the
requirements of this Standard. Figure 1 is a schematic diagram of the required (solid
lines) or recommended (dotted lines) components of the system and their connections.
g) The power is off.
All VAS components shall be compatible with each other and shall not affect the
performance of the vehicle when the alarm is removed. Regardless of setting or
unsetting the alarm, the status of the VAS cannot be changed at will. Do not operate or
stop working under the influence of any other warning device. When a power outage
occurs, the VAS must not change its status after power is restored. The failure of any
sound and light warning device shall not affect the normal operation of the rest of the
VAS. VAS components are designed, manufactured and installed to minimize the
possibility of false alarms. All VASs shall prevent unauthorized users from easily and
quickly entering or compromising the system.
4.2.2 Detection
VAS shall provide perimeter protection. Additional sensors can be installed to detect
interference or intrusion into the vehicle. Additional sensors can be unset by the user,
but only valid for one activation cycle of the VAS.
VAS can provide panic warning devices set f...