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This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by the Ministry of Industry and Information Technology of the People's Republic of China.
This standard is under the jurisdiction of the National Technical Committee of Auto Standardization (SAC/TC 114).
Electronic toll collection - On board unit
1 Scope
This standard specifies the technical requirements, test methods and inspection rules of electronic toll collection on board unit.
It is applicable to the electronic toll collection on board unit powered directly by the vehicle.
It may serve as a reference for other on board electronic payment units.
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 1865-2009 Paints and varnishes - Artificial weathering and exposure to artificial radiation - Exposure to filtered xenon-arc radiation
GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
GB/T 18655-2018 Vehicles, boats and internal combustion engines - Radio disturbance characteristics - Limits and methods of measurement for the protection of on-board receivers
GB/T 19951-2019 Road vehicles - Disturbances test methods for electrical/electronic component from electrostatic discharge
GB/T 20851.1 Electronic toll collection - Dedicated short range communication - Part 1: Physical layer
GB/T 20851.2 Electronic toll collection - Dedicated short range communication - Part 2: Data link layer
GB/T 21437.2-2008 Road vehicles - Electrical disturbances from conduction and coupling - Part 2: Electrical transient conduction along supply lines only
GB/T 21437.3-2012 Road vehicles - 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 30038-2013 Road vehicles - Degrees of electrical equipment protection (IP-code)
GB 34660-2017 Road vehicles - Requirements and test methods of electromagnetic compatibility
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1.1
electronic toll collection on board unit
an electronic equipment installed inside a vehicle and communicating with ETC RSU in two directions to realize the function of toll collection without parking
3.1.2
electronic toll collection roadside unit
an electronic equipment installed outside a vehicle and communicating with ETC OBU in two directions to realize the function of toll collection without parking
3.1.3
transaction
the process for ETC OBU to establish communication link with ETC RSU to complete toll collection
3.2 Abbreviations
For the purposes of this document, the following abbreviations apply.
BER: Bit Error Rate
EIRP: Equivalent Isotropically Radiated Power
ETC OBU: Electronic Toll Collection On Board Unit
ETC RSU: Electronic Toll Collection Roadside Unit
XPD: Cross Polarization Discrimination
4 Technical requirements
4.1 Functional requirements
The ETC OBU shall be able to conduct a transaction with the ETC RSU.
4.2 Self-test function
The ETC OBU shall have system self-test function. In case of failure, there shall be acoustic or optical prompt.
4.3 Transaction reminder function
When the ETC OBU has a transaction with the ETC RSU, a prompt that the transaction is normal or abnormal shall be given to the user by acoustic or optical way.
4.4 Requirements for radio frequency (RF) and data link layer
The RF performance of the ETC OBU shall meet the requirements of GB/T 20851.1 and the data link layer shall comply with GB/T 20851.2.
The RF performance and data link layer of other on board electronic payment units shall also meet the requirements of the corresponding standards.
4.5 Environmental assessment
4.5.1 Environmental assessment requirements
The ETC OBU shall meet the environmental assessment requirements specified in 4.5.2 to 4.5.7.
Note: The object under environmental assessment test does not include energy storage device.
4.5.2 Electrical performance
4.5.2.1 DC supply voltage
The DC supply voltage range of the ETC OBU is detailed in Table 1. In the range of USmin~USmax, the test shall be conducted according to 5.3.5.1.1. The ETC OBU shall have normal transaction function both during and after the test.
Foreword i
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
4 Technical requirements
5 Test methods
6 Inspection rules
Annex A (Informative) Table of ETC RSU simulator parameters
Annex B (Informative) Durability test
Annex C (Informative) Calculation model of durability test
