GB 44497-2024 Intelligent and connected vehicle - Data storage system for automated driving
1 Scope
This document specifies the technical requirements, test methods, and the same type determination of the data storage system for automated driving of intelligent and connected vehicle.
This document is applicable to the data storage system for automated driving of M and N vehicles.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions 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 1865-2009 Paints and varnishes - Artificial weathering and exposure to artificial radiation - Exposure to filtered xenon-arc radiation
GB 11551 The protection of the occupants in the event of a frontal collision for motor vehicle
GB 16735 Road vehicle - Vehicle identification number (VIN)
GB/T 19951-2019 Road vehicles - Disturbances test methods for electrical/electronic component from electrostatic discharge
GB 20071 The protection of the occupants in the event of a lateral collision
GB/T 20913 The protection of the occupant in the event of a frontal collision for passenger car
GB/T 21437.3-2021 Road vehicles - Test method of electrical disturbances from conduction and coupling - Part 3 : Electrical transient transmission by capacitive and inductive coupling via lines other than supply lines
GB/T 28046.1-2011 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 1 : General
GB/T 28046.2-2019 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 2 : Electrical loads
GB/T 28046.3-2011 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 3: Mechanical loads
GB/T 28046.4-2011 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 4: Climatic loads
GB/T 28046.5-2013 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 5 : Chemical loads
GB/T 43258.2 Road vehicles - Diagnostic communication over Internet Protocol (DoIP) - Part 2 : Transport protocol and network layer services
GB/T 43258.4 Road vehicles - Diagnostic communication over Internet Protocol (DoIP) - Part 4: Ethernet-based high-speed data link connector
GB/T 44721 Intelligent and connected vehicle - General technical requirements of automated driving system
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 39732-2020 and GB/T 40429-2021 as well as the following apply.
3.1
data storage system for automated driving
system mounted on vehicles equipped with automated driving function, and having the functions of monitoring, data collection and storage functions and supporting data readout during the activation of the automated driving system
Note 1: The activation period covers the process from the activated state to the inactive state.
Note 2: Data storage system for automated driving includes type I system and type II systems.
[Source: GB/T 44373-2024, 5.13, modified]
3.2
impact event
impact or other physical events that reach or exceed the trigger threshold, or any other events that result in the deployment of the non-reversible restraint, whichever occurs first
Note: Impact events of vulnerable road users (VRU) detected by the deployment of pedestrian protection devices or other systems are impact events.
[Source: GB 39732-2020, 3.1, modified]
3.3
starting point of event
T0
moment when the data storage system for automated driving confirms the time when a specific event occurs
3.4
ending point of event
Tend
moment when the data storage system for automated driving confirms the time when a specific event ends
3.5
locked status
status where data cannot cover
3.6
field viewing angle
angle formed by the two edges of the maximum range of the lens through which the target image to be measured passes, with the center of the lens of the camera equipment as the vertex
3.7
time sequence event
event of storing the relevant data during the time before and after the event starting point around the event start point when the trigger condition is met
3.8
timestamp event
event of storing the relevant data of the event start point only when the trigger condition is met
3.9
automated driving function
function that driving automation system performing the full range of dynamic driving tasks continuously and automatically in place of the driver under specific design operating conditions
Note: The general term for driving automation functions at level 3 or above specified in GB/T 40429-2021, including conditional automated driving, highly automated driving and fully automated driving.
[Source: GB/T 44373-2024, 6.4]
3.10
automated driving system; ADS
system composed of hardware and software to realize automated driving functions
Note: "automated driving system" refers to the driving automation system of level 3 or above specified in GB/T 40429-2021.
[Source: GB/T 44373-2024, 5.3]
3.11
severe ADS failure
failure of key components of ADS leading to the failure that seriously affects the safe operation of ADS
Example: failure of core cell
[Source: GB/T 44721-2024, 3.6]
3.12
severe vehicle failure
any failure that affects the ability of ADS to both perform dynamic driving task (DDT) and manual driving at the same time
Example: power failure, brake system failure, sudden drop in tire pressure.
[Source: GB/T 44721-2024, 3.7]
4 Technical requirements
4.1 General
Data storage system for automated driving includes type I system and type II systems.
The data storage system for automated driving of M1 and N1 vehicles shall be Type I or Type II, and that of M2, M3, N2 and N3 vehicles shall be Type II. The relevant requirements are as follows:
- Type I system shall meet the requirements of 4.2, 4.4-4.9;
- Type II system shall meet the requirements of 4.3-4.9;
4.2 Requirements data storage for type I system
4.2.1 General
4.2.1.1 When the automated driving system is activated, type I system shall record at least the following event data:
a) time sequence event: when a collision event meeting the requirements of 4.2.2.1 or a collision risk event meeting the requirements of 4.2.3.1 occurs, the data storage system for automated driving shall record data elements meeting the requirements of 4.4.2;
b) timestamp event: the data storage system for automated driving shall store the data elements meeting the requirements in Table 1, when the automated driving system is activated, exits, sends an intervention request, starts to execute the minimum risk strategy, has serious failure of ADS and vehicle, or the user manipulates the ADS exit device according to the requirements of GB/T 44721.
4.2.1.2 When the current time sequence event data storing is in progress, if a time sequence event occurs during this period, the relevant data of subsequent time period events may be stored incompletely, but at least the relevant data of subsequent time sequence events shall be stored according to the requirements in Table 1.
4.2.1.3 When data cannot be obtained due to failure, the data storage system for automated driving is allowed to incompletely store event-related data.
4.2.2 Impact event
4.2.2.1 Triggering condition
When the vehicle meets the requirements of 4.1.1 in GB 39732-2020, the event shall be stored.
4.2.2.2 Starting point and ending point of event
The starting point and ending point of impact events shall meet the following requirements:
a) the starting point of event shall meet the requirements of 4.1.3 in GB 39732-2020;
b) the ending point of event shall meet the requirements of 4.1.4 in GB 39732-2020;
4.2.2.3 Starting point and ending point of event storage
The starting point and ending point of impact event storage shall meet the following requirements:
a) starting point of impact event storage: 15s before the starting point of the event or the activation moment of the automated driving system, whichever is later;
b) ending point of impact event storage: 5s after the starting point of the event, the exit moment of the automated driving system or the end pointing of event, whichever is earlier.
4.2.2.4 Event locking conditions
Impact event locking conditions shall meet the requirements of 4.1.2 of GB 39732-2020.
Note: Allowing the pedestrian protection device to deploy is not defined as a locking event.
Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Technical requirements 4.1 General 4.2 Data storage requirements for Type I system 4.3 Data storage requirements for Type II system 4.4 Requirements for data elements 4.5 Data storage requirements 4.6 Data reading requirements 4.7 Requirements of information security 4.8 Requirements of impact resistance 4.9 Environmental assessment requirements 5 Test conditions 5.1 Test site and test environment requirements 5.2 Test equipment and data storage requirements 5.3 Requirements for test vehicle 6 Test methods 6.1 Trigger test 6.2 Continuous storage trigger test 6.3 Impact test 6.4 Data accuracy verification test 6.5 Data storage mechanism test 6.6 Environmental assessment test 6.7 Information security test 7 Same type judgment 7.1 Conditions under which the vehicles are directly judged as the same type 7.2 Conditions under which the vehicles are judged as the same type after test verification 8 Implementation of this standard Annex A (Normative) Definition of data extraction symbols Annex B (Normative) Export file format of data storage system for automated driving Bibliography
