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
GB/T 41484-2022 汽车用超声波传感器总成
1 范围 本文件规定了汽车用超声波传感器总成的要求、试验方法和检验规则。 本文件适用于汽车使用的超声波传感器总成(以下简称总成)。 2 规范性引用文件 下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中，注日期的引用文件，仅该日期对应的版本适用于本文件；不注日期的引用文件，其最新版本(包括所有的修改单)适用于本文件。 GB／T 2828.1 计数抽样检验程序 第1部分：按接收质量限(AQL)检索的逐批检验抽样计划 GB／T 18655-2018 车辆、船和内燃机 无线电骚扰特性 用于保护车载接收机的限值和测量方法 GB／T 19951-2019 道路车辆 电气／电子部件对静电放电抗扰性的试验方法 GB／T 21437.2-2021 道路车辆 电气／电子部件对传导和耦合引起的电骚扰试验方法 第2部分：沿电源线的电瞬态传导发射和抗扰性 GB／T 21437.3-2021 道路车辆 电气／电子部件对传导和耦合引起的电骚扰试验方法 第3部分：对耦合到非电源线电瞬态的抗扰性 GB／T 28046.2-2019 道路车辆 电气及电子设备的环境条件和试验 第2部分：电气负荷 GB／T 28046.3-2011 道路车辆 电气及电子设备的环境条件和试验第3部分：机械负荷 GB／T 28046.4-2011 道路车辆 电气及电子设备的环境条件和试验 第4部分：气候负荷 GB／T 28046.5-2013 道路车辆 电气及电子设备的环境条件和试验 第5部分：化学负荷 GB／T 30038-2013 道路车辆 电气电子设备防护等级(IP代码) GB 34660-2017 道路车辆 电磁兼容性要求和试验方法 ISO 4892-2：2013 塑料 实验室光源暴露试验方法 第2部分：氩弧灯(Plastics-Methods of ex-posure to laboratory light sources—Part 2：Xenon-arc lamps) ISO 11124-2：2018 涂覆涂料前钢材表面处理 喷射清理用金属磨料的技术要求 第⒉部分：冷硬铸铁砂(Preparation of steel substrates before application of paints and related products—Specifica-tions for metallic blast-cleaning abrasives—Part 2：Chilled-irongrit) ISO 20567-1 涂料和清漆 涂层的耐石片划痕的测定 第1部分：多冲击试验(Paints and var-nished—Determination of stone—chip resistance of coating—Part 1：Multi-impact testing) 3 术语和定义 下列术语和定义适用于本文件。 3.1 超声波传感器总成 ultrasonic sensor assembly 用于发射、接收和处理超声波信号并获取目标距离、方位等信息的车载电子装置。 注：超声波传感器总成可分为单独传感器或传感器与控制单元的集成。 3.2 标准测试杆 standard test tube 用于反射超声波信号的标准测试装置。 3.3 余振 ring time 总成发射超声波驱动信号的惯性阻尼衰减时间。 3.4 探测范围 field of view 在规定条件下，总成能够探测到的三维空间区域。 3.5 探测覆盖率 detection coverage rate 总成的有效探测范围与所要求的探测范围的百分比。 3.6 分辨力 resolution 总成能够区分目标最小变化距离的能力。 3.7 启动信号 starting signal 按照既定的通信协议用于启动总成工作的指令信号。 3.8 收发装置 transceiver device 用于给总成发送启动信号或按既定的通信协议发送数据帧，并接收总成返回的距离、方位等信号，以听觉或视觉等方式给予指示的测试装置。 4 符号和缩略语 下列符号和缩略语适用于本文件。 DUT：受试装置(device under test) Tmax：最高工作温度(maximum operating temperature) Tmin：最低工作温度( minimum operating temperature) UN：标称电压(nominal voltage) Ut：试验电压(test voltage) USmax：最高供电电压(maximum supply voltage) USmin：最低供电电压(minimum supply voltage) 5 要求 5.1 外观和结构要求 5.1.1 外观 按照6.2进行试验，总成的外观应满足以下要求： a) 各部件外表面应光洁、平整，无凹痕、划伤、裂缝、变形、毛刺，霉斑等缺陷； b) 金属件表面应有均匀的防护层，无起泡、龟裂、脱落、锈蚀和机械损伤； c) 标志应准确、清晰易于识别。 5.1.2 结构 按照6.2进行试验，总成的各零部件应装配完整且紧固可靠，不应有变形、松动和脱落现象。 5.2 输出信号 按照6.3进行试验，总成输出信号至少应满足以下任意一项要求： a) 应能输出探测距离、方位等信息的信号，探测精度应满足5.3.6a)的要求； b) 应能输出表征探测距离、方位等信息的听觉或视觉信号，探测精度应满足5.3.6b)的要求。 注：听觉信号指示模式示例见附录A中表A.2。 5.3 性能要求 5.3.1 频率 按照6.4.1进行试验，总成的频率由供需双方协商确定，其公差应为±1 kHz。 5.3.2 余振 按照6.4.2进行试验，总成的余振应不大于2 ms。 5.3.3 探测范围 按照6.4.3进行试验，总成的探测范围应满足表1的要求，应用场景可由供需双方协商确定。 表1 探测范围 5.3.4 探测覆盖率 5.3.4.1 水平探测覆盖率 按照6.4.4.1进行试验，总成的水平探测覆盖率应满足以下要求： a) 在极坐标(0.2 m，α／2)和(0.2 m，－α／2)到极坐标(0.6 m，α／2)和(0.6 m，－α／2)的范围内，探测覆盖率应不小于90%； b) 在坐标点(0.6 m，α／2)和(0.6 m，－α／2)到(0.6 m×sinα／2，Dmax)和(－0.6 m×sinα／2，Dmax的范围内，探测覆盖率应不小于80%； c) 其他范围的探测覆盖率不做要求。 总成水平探测范围示例见图1。
