GB/T 41484-2022 in English

《GB/T 41484-2022汽车用超声波传感器总成》由TC114（全国汽车标准化技术委员会）归口，TC114SC29（全国汽车标准化技术委员会电子与电磁兼容分会）执行，主管部门为工业和信息化部。

Automotive ultrasonic sensor assembly English

1 Scope

This standard specifies the requirements, test methods and inspection rules of automotive ultrasonic sensor assembly.

This standard is applicable to automotive ultrasonic sensor assembly (hereinafter referred to as assembly).

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 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 21437.2-2021 Road vehicles—Test method of electrical disturbances from conduction and coupling—Part 2: Electrical transient conduction along supply lines only
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 28046.2-2019 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
ISO 4892-2:2013 Plastics-Methods of exposure to laboratory light sources—Part 2: Xenon-arc lamps
ISO 11124-2:2018 Preparation of steel substrates before application of paints and related products—Specifications for metallic blast-cleaning abrasives—Part 2: Chilled-iron grit
ISO 20567-1 Paints and varnished—Determination of stone-chip resistance of coating—Part 1: Multi-impact testing

3 Terms and definitions

For the purposes of this standard, the following terms and definitions apply.

3.1
ultrasonic sensor assembly
on-board electronic device for transmitting, receiving and processing ultrasonic signals and acquiring information such as target distance and azimuth

Note: The ultrasonic sensor assembly can be an individual sensor or an integrated sensor and control unit.

3.2
standard test tube
standard test device for reflecting ultrasonic signals

3.3
ring time
inertial damping attenuation time of ultrasonic driving signal emitted by assembly

3.4
field of view
three-dimensional space area detectable by the assembly under specified conditions

3.5
detection coverage rate
percentage of the effective field of view to the required field of view of the assembly

3.6
resolution
ability of the assembly to distinguish the minimum change distance of the target

3.7
starting signal
command signal for starting the assembly according to the established communication protocol

3.8
transceiver device
test device used to send starting signal to the assembly or send data frames according to the established communication protocol, and receive the distance, azimuth and other signals returned by the assembly, and give instructions auditorily or visually

4 Symbols and abbreviations

For the purpose of this standard, the following symbols and abbreviations apply.

DUT: device under test

Tmax: maximum operating temperature

Tmin: minimum operating temperature

UN: nominal voltage

Ut: test voltage

USmax: maximum supply voltage

USmin: minimum supply voltage

5 Requirements

5.1 Appearance and structure requirements

5.1.1 Appearance

It shall be tested in accordance with 6.2, and appearance of assembly shall meet the following requirements:

a) The components shall be clean and smooth on the surface, free of defects such as dents, scratches, cracks, deformation, burr, mildew, etc.

b) The metal parts shall be provided with a uniform protective layer on the surface, free of blistering, cracking, shedding, corrosion and mechanical damage;

c) The markings shall be correct and legible.
 
5.1.2 Structure

It shall be tested in accordance with 6.2. All parts of the assembly shall be assembled completely and fastened reliably without deformation, looseness, or shedding.

5.2 Output signal

Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Requirements
6 Test methods
7 Inspection rules
Annex A (Informative) Test method for horizontal field of view of multi-sensor system
Annex B (Informative) Durability test
Annex C (Informative) Calculation model of durability test